Absorbent articles with channels

Description

FIELD

The present disclosure is generally directed to absorbent articles for personal hygiene such as baby diapers, training pants, adult incontinence products, and/or sanitary napkins. The absorbent articles may each comprise channels and/or pockets.

BACKGROUND

Absorbent articles for personal hygiene, such as disposable diapers for infants, training pants for toddlers, adult incontinence undergarments, and/or sanitary napkins are designed to absorb and contain body exudates, in particular large quantities of urine or menses. These absorbent articles comprise several layers providing different functions, for example, a topsheet, a backsheet, and an absorbent core disposed between the topsheet and the backsheet, among other layers.

The function of the absorbent core is to absorb and retain the exudates for a prolonged amount of time, for example, overnight for a diaper, minimize re-wet to keep the wearer dry, and avoid soiling of clothes or bed sheets. The majority of currently marketed absorbent articles comprise as absorbent material which is a blend of comminuted wood pulp with superabsorbent polymers (SAP) in particulate form, also called absorbent gelling materials (AGM). Absorbent articles having a core consisting essentially of SAP as absorbent material (so called “airfelt-free” cores) have also been proposed but are less common than traditional mixed cores.

Some absorbent articles may typically comprise leg cuffs which provide improved containment of liquids and other body exudates. Leg cuffs may also be referred to as leg bands, side flaps, barrier cuffs, or elastic cuffs. Usually, each leg cuff comprises one or more elastic strings or elements comprised in the chassis of the diaper, for example, between the topsheet and backsheet in the area of the leg openings to provide an effective seal while the absorbent article is in use. These elasticized elements which are substantially planar with the chassis of the absorbent article will be referred to herein as gasketing cuffs. It is also usual for the leg cuffs to comprise raised elasticized flaps, herein referred to as barrier leg cuffs, which improve the containment of fluid in the leg-torso joint regions.

Absorbent articles generally have a high absorbent capacity and the absorbent core may expand several times its weight and volume. These increases may cause the absorbent articles to sag in the crotch region as they become saturated with liquid, which may cause the barrier leg cuffs to partially lose contact with the wearer's skin. This may lead to a loss of functionality of the barrier leg cuffs, with the increased possibly of leakage.

Although various solutions to this problem have been proposed, the field can benefit from additional channel and/or pocket configurations that improved leakage prevention in absorbent articles.

SUMMARY

In an embodiment, the present disclosure is directed, in part, to an absorbent article that may comprise a front waist edge or front edge, a rear waist edge or rear edge longitudinally opposing the front waist edge, a first side edge, a second side edge laterally opposing the first side edge, a longitudinal axis extending from a midpoint of the front waist edge to a midpoint of the rear waist edge, and a lateral axis extending from a midpoint of the first side edge to a midpoint of the second side edge. The absorbent article may also comprise a liquid permeable topsheet, a liquid impermeable backsheet, and a pair of barrier leg cuffs extending at least partially between the front waist edge and the rear waist edge on opposite sides of the longitudinal axis. Each barrier leg cuff may comprise a proximal edge joined to the topsheet or the backsheet and a free terminal edge. The absorbent article may also comprise an absorbent core disposed at least partially intermediate the topsheet and the backsheet and may comprise a core wrap enclosing an absorbent material. The core wrap may comprise a first material and a second material. The first material may form a C-wrap at least partially around the second material. The absorbent material may comprise at least 80% of superabsorbent polymers by weight of the absorbent material. The absorbent core may comprise a channel substantially free of the superabsorbent polymers, at least partially oriented in the longitudinal direction of the article, and comprising an arcuate portion. The channel has lateral widths taken parallel to the lateral axis. The profile of the lateral widths of the channel over a longitudinal length of at least 50 mm of the channel taken along the longitudinal axis may be substantially constant. Other embodiments are also within the scope of the present disclosure, including embodiments for sanitary napkins.

BRIEF DESCRIPTION OF THE DRAWINGS

The above-mentioned and other features and advantages of the present disclosure, and the manner of attaining them, will become more apparent and the disclosure itself will be better understood by reference to the following description of non-limiting embodiments of the disclosure taken in conjunction with the accompanying drawings, wherein:

FIG. 1 is a top view of an absorbent article with some layers partially removed in accordance with a non-limiting embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of the absorbent article taken about line 2-2 of FIG. 1 in accordance with a non-limiting embodiment of the present disclosure;

FIG. 3 is a view of the absorbent article of FIG. 2 where the absorbent article has been loaded with fluid in accordance with a non-limiting embodiment of the present disclosure;

FIG. 4 is a top view of another absorbent article with some layers partially removed in accordance with a non-limiting embodiment of the present disclosure;

FIG. 5 is a cross-sectional view of the absorbent article taken about line 5-5 of FIG. 4 in accordance with a non-limiting embodiment of the present disclosure;

FIG. 6 is a top view of an absorbent core of the absorbent article of FIG. 4 with some layers partially removed in accordance with a non-limiting embodiment of the present disclosure;

FIG. 7 is a cross-sectional view of the absorbent core taken about line 7-7 of FIG. 6 in accordance with a non-limiting embodiment of the present disclosure;

FIG. 8 is a cross-sectional view of the absorbent core taken about line 8-8 of FIG. 6 in accordance with a non-limiting embodiment of the present disclosure;

FIG. 9 is a top view of an absorbent core for an absorbent article in accordance with a non-limiting embodiment of the present disclosure;

FIG. 10 is a profile of the sum of the lateral widths of two channels of FIG. 9 graphed against the longitudinal length of the channels within the enclosed area “EA” in accordance with a non-limiting embodiment of the present disclosure;

FIG. 11 is a profile of the sum of the lateral widths of portions of the channels of FIG. 1 graphed against the longitudinal length of the channels between lines A and B of FIG. 1 in accordance with a non-limiting embodiment of the present disclosure;

FIG. 12 is a top view of an absorbent core for an absorbent article in accordance with a non-limiting embodiment of the present disclosure;

FIG. 13 is a profile of the sum of the lateral widths of portions of the channels and the pocket of FIG. 12 graphed against the longitudinal length of the channels between lines C and D of FIG. 12 in accordance with a non-limiting embodiment of the present disclosure;

FIGS. 14-21 are top views of absorbent cores for absorbent articles in accordance with various non-limiting embodiments of the present disclosure; and

FIG. 22 is a top view of an absorbent article that is a sanitary napkin with some of the layers cut away in accordance with a non-limiting embodiment of the present disclosure.

DETAILED DESCRIPTION

Various non-limiting embodiments of the present disclosure will now be described to provide an overall understanding of the principles of the structure, function, manufacture, and use of the absorbent articles with channel configurations and methods for making the same disclosed herein. One or more examples of these non-limiting embodiments are illustrated in the accompanying drawings. Those of ordinary skill in the art will understand that the absorbent articles with channel configurations and methods for making the same described herein and illustrated in the accompanying drawings are non-limiting example embodiments and that the scope of the various non-limiting embodiments of the present disclosure are defined solely by the claims. The features illustrated or described in connection with one non-limiting embodiment may be combined with the features of other non-limiting embodiments. Such modifications and variations are intended to be included within the scope of the present disclosure.

Introduction

As used herein, the term “absorbent article” refers to disposable devices such as infant, child, or adult diapers, training pants, sanitary napkins, and the like which are placed against or in proximity to the body of the wearer to absorb and contain the various exudates discharged from the body. Typically, these articles comprise a topsheet, backsheet, an absorbent core, optionally an acquisition system (which may be comprised of one or several layers), and typically other components, with the absorbent core normally placed at least partially between the backsheet and the acquisition system or between the topsheet and the backsheet. The absorbent articles of the present disclosure will be further illustrated in the below description and in the Figures in the form of a taped diaper. Nothing in this description should be, however, considered limiting the scope of the claims. As such the present disclosure applies to any suitable form of absorbent articles (e.g., training pants, adult incontinence products, sanitary napkins).

A “nonwoven web” as used herein means a manufactured sheet, web, or batt of directionally or randomly orientated fibers, bonded by friction, and/or cohesion, and/or adhesion, excluding paper and products which are woven, knitted, tufted, stitch-bonded incorporating binding yarns or filaments, or felted by wet-milling, whether or not additionally needled. The fibers may be of natural or man-made origin and may be staple or continuous filaments or be formed in situ. Commercially available fibers may have diameters ranging from less than about 0.001 mm to more than about 0.2 mm and may come in several different forms such as short fibers (known as staple, or chopped), continuous single fibers (filaments or monofilaments), untwisted bundles of continuous filaments (tow), and twisted bundles of continuous filaments (yam). Nonwoven webs can be formed by many processes such as meltblowing, spunbonding, solvent spinning, electrospinning, carding, and airlaying. The basis weight of nonwoven webs is usually expressed in grams per square meter (g/m²or gsm).

The term “joined” or “bonded” or “attached”, as used herein, encompasses configurations whereby an element is directly secured to another element by affixing the element directly to the other element, and configurations whereby an element is indirectly secured to another element by affixing the element to intermediate member(s) which in turn are affixed to the other element.

General Description of the Absorbent Article

An example absorbent article according to the present disclosure in the form of an infant diaper 20 is represented in FIGS. 1-3. FIG. 1 is a plan view of the example diaper 20, in a flat-out state, with portions of the structure being cut-away to more clearly show the construction of the diaper 20. This diaper 20 is shown for illustration purpose only as the present disclosure may be used for making a wide variety of diapers or other absorbent articles.

The absorbent article may comprise a liquid permeable topsheet 24, a liquid impermeable backsheet 25, an absorbent core 28 positioned at least partially intermediate the topsheet 24 and the backsheet 25, and barrier leg cuffs 34. The absorbent article may also comprise an acquisition-distribution system (“ADS”) 50, which in the example represented comprises a distribution layer 54 and an acquisition layer 52, which will be further detailed below. The absorbent article may also comprise elasticized gasketing cuffs 32 joined to the chassis of the absorbent article, typically via the topsheet and/or backsheet, and substantially planar with the chassis of the diaper.

The Figures also show typical taped diaper components such as a fastening system comprising adhesive tabs 42 attached towards the rear edge of the article and cooperating with a landing zone 44 on the front of the article. The absorbent article may also comprise other typical elements, which are not represented, such as a rear elastic waist feature, a front elastic waist feature, transverse barrier cuff(s), and/or a lotion application, for example.

The absorbent article 20 comprises a front waist edge 10, a rear waist edge 12 longitudinally opposing the front waist edge 10, a first side edge 3, and a second side edge 4 laterally opposing the first side edge 3. The front waist edge 10 is the edge of the article which is intended to be placed towards the front of the user when worn, and the rear waist edge 12 is the opposite edge. The absorbent article may have a longitudinal axis 80 extending from the lateral midpoint of the front waist edge 10 to a lateral midpoint of the rear waist edge 12 of the article and dividing the article in two substantially symmetrical halves relative to the longitudinal axis 80, with article placed flat and viewed from above as in FIG. 1. The absorbent article may also have a lateral axis 90 extending from the longitudinal midpoint of the first side edge 3 to the longitudinal midpoint of the second side edge 4. The length L of the article may be measured along the longitudinal axis 80 from the front waist edge 10 to the rear waist edge 12. The width of the article may be measured along the lateral axis 90 from the first side edge 3 to the second side edge 4. The article may comprise a crotch point C defined herein as the point placed on the longitudinal axis at a distance of two fifth (⅖) of L starting from the front edge 10 of the article 20. The article may comprise a front waist region 5, a rear waist region 6, and a crotch region 7. The front waist region, the rear waist region, and the crotch region each define ⅓ of the longitudinal length of the absorbent article.

The topsheet 24, the backsheet 25, the absorbent core 28, and the other article components may be assembled in a variety of configurations, in particular by gluing or heat embossing, for example. Example diaper configurations are described generally in U.S. Pat. No. 3,860,003, U.S. Pat. No. 5,221,274, U.S. Pat. No. 5,554,145, U.S. Pat. No. 5,569,234, U.S. Pat. No. 5,580,411, and U.S. Pat. No. 6,004,306. The absorbent article may be thin. The caliper at the crotch point C or in the crotch region 7 of the article may be, for example, from 4.0 mm to 12.0 mm or alternatively from 6.0 mm to 10.0 mm.

The absorbent core 28 may comprise an absorbent material comprising at least 80% by weight, at least 90% by weight, at least 95% by weight, or at least 99% by weight of superabsorbent polymers and a core wrap enclosing the superabsorbent polymers. The core wrap may typically comprise two materials, substrates, or nonwoven materials 16 and 16′ for the top side and bottom side of the core. The core may comprises one or more channels, represented in FIG. 1 as the four channels 26, 26′ and 27, 27′.

These and other components of the articles will now be discussed in more details.

Topsheet

The topsheet 24 is the part of the absorbent article that is directly in contact with the wearer's skin. The topsheet 24 can be joined to the backsheet 25, the core 28 and/or any other layers as is known to those of skill in the art. Usually, the topsheet 24 and the backsheet 25 are joined directly to each other in some locations (e.g., on or close to the periphery of the article) and are indirectly joined together in other locations by directly joining them to one or more other elements of the article 20.

The topsheet 24 may be compliant, soft-feeling, and non-irritating to the wearer's skin. Further, at least a portion of the topsheet 24 may be liquid permeable, permitting liquids to readily penetrate through its thickness. A suitable topsheet may be manufactured from a wide range of materials, such as porous foams, reticulated foams, apertured plastic films, or woven or nonwoven materials of natural fibers (e.g., wood or cotton fibers), synthetic fibers or filaments (e.g., polyester or polypropylene or bicomponent PE/PP fibers or mixtures thereof), or a combination of natural and synthetic fibers. If the topsheet 24 includes fibers, the fibers may be spunbond, carded, wet-laid, meltblown, hydroentangled, or otherwise processed as is known in the art, in particular spunbond PP nonwoven. A suitable topsheet comprising a web of staple-length polypropylene fibers is manufactured by Veratec, Inc., a Division of International Paper Company, of Walpole, Mass. under the designation P-8.

Suitable formed film topsheets are also described in U.S. Pat. No. 3,929,135, U.S. Pat. No. 4,324,246, U.S. Pat. No. 4,342,314, U.S. Pat. No. 4,463,045, and U.S. Pat. No. 5,006,394. Other suitable topsheets 30 may be made in accordance with U.S. Pat. Nos. 4,609,518 and 4,629,643 issued to Curro et al. Such formed films are available from The Procter & Gamble Company of Cincinnati, Ohio as “DRI-WEAVE” and from Tredegar Corporation, based in Richmond, Va., as “CLIFF-T”.

Any portion of the topsheet 24 may be coated with a lotion as is known in the art. Examples of suitable lotions include those described in U.S. Pat. No. 5,607,760, U.S. Pat. No. 5,609,587, U.S. Pat. No. 5,643,588, U.S. Pat. No. 5,968,025, and U.S. Pat. No. 6,716,441. The topsheet 24 may also include or be treated with antibacterial agents, some examples of which are disclosed in PCT Publication WO95/24173. Further, the topsheet 24, the backsheet 25 or any portion of the topsheet or backsheet may be embossed and/or matte finished to provide a more cloth like appearance.

The topsheet 24 may comprise one or more apertures to ease penetration of exudates therethrough, such as urine and/or feces (solid, semi-solid, or liquid). The size of at least the primary aperture is important in achieving the desired waste encapsulation performance. If the primary aperture is too small, the waste may not pass through the aperture, either due to poor alignment of the waste source and the aperture location or due to fecal masses having a diameter greater than the aperture. If the aperture is too large, the area of skin that may be contaminated by “rewet” from the article is increased. Typically, the total area of the apertures at the surface of a diaper may have an area of between about 10 cm²and about 50 cm²or between about 15 cm²and 35 cm². Examples of apertured topsheets are disclosed in U.S. Pat. No. 6,632,504, assigned to BBA NONWOVENS SIMPSONVILLE. WO2011/163582 also discloses suitable colored topsheet having a basis weight of from 12 to 18 gsm and comprising a plurality of bonded points. Each of the bonded points has a surface area of from 2 mm²to 5 mm²and the cumulated surface area of the plurality of bonded points is from 10 to 25% of the total surface area of the topsheet.

Typical diaper topsheets have a basis weight of from about 10 to about 21 gsm or from about 12 to about 18 gsm, but other basis weights are within the scope of the present disclosure.

Backsheet

The backsheet 25 is generally that portion of the article 20 positioned adjacent the garment-facing surface of the absorbent core 28 and which prevents, or at least inhibits, the exudates absorbed and contained therein from soiling articles such as bedsheets and undergarments. The backsheet 25 is typically impermeable, or at least substantially impermeable, to liquids (e.g., urine). The backsheet may, for example, be or comprise a thin plastic film such as a thermoplastic film having a thickness of about 0.012 mm to about 0.051 mm. Example backsheet films include those manufactured by Tredegar Corporation, based in Richmond, Va., and sold under the trade name CPC2 film. Other suitable backsheet materials may include breathable materials which permit vapors to escape from the diaper 20 while still preventing, or at least inhibiting, exudates from passing through the backsheet 25. Example breathable materials may include materials such as woven webs, nonwoven webs, composite materials such as film-coated nonwoven webs, microporous films such as manufactured by Mitsui Toatsu Co., of Japan under the designation ESPOIR NO and by Tredegar Corporation of Richmond, Va., and sold under the designation EXAIRE, and monolithic films such as manufactured by Clopay Corporation, Cincinnati, Ohio under the name HYTREL blend P18-3097.

The backsheet 25 may be joined to the topsheet 24, the absorbent core 28, and/or any other element of the diaper 20 by any attachment methods known to those of skill in the art. Suitable attachment methods are described above with respect to methods for joining the topsheet 24 to other elements of the article 20. For example, the attachment methods may include using a uniform continuous layer of adhesive, a patterned layer of adhesive, or an array of separate lines, spirals, or spots of adhesive. Suitable attachment methods comprising an open pattern network of filaments of adhesive as disclosed in U.S. Pat. No. 4,573,986. Other suitable attachment methods include using several lines of adhesive filaments which are swirled into a spiral pattern, as is illustrated by the apparatus and methods shown in U.S. Pat. No. 3,911,173, U.S. Pat. No. 4,785,996, and U.S. Pat. No. 4,842,666. Adhesives which have been found to be satisfactory are manufactured by H. B. Fuller Company of St. Paul, Minn. and marketed as HL-1620 and HL 1358-XZP. Alternatively, the attachment methods may comprise using heat bonds, pressure bonds, ultrasonic bonds, dynamic mechanical bonds, or any other suitable attachment methods or combinations of these attachment methods as are known to those of skill in the art.

Absorbent Core

As used herein, the term “absorbent core” refers to the individual component of the article having the most absorbent capacity and comprising an absorbent material and a core wrap enclosing the absorbent material. The term “absorbent core” does not include the acquisition-distribution system or layer or any other component of the article which is not either integral part of the core wrap or placed within the core wrap. The core may comprise, consist essentially of, or consist of, a core wrap, absorbent material as defined below, and glue enclosed within the core wrap.

The absorbent core 28 of the present disclosure may comprise an absorbent material with a high amount of superabsorbent polymers (herein abbreviated as “SAP”) enclosed within a core wrap. The SAP content may represent 70%-100% or at least 70%, 75%, 80%, 85%, 90%, 95%, 99%, or 100% by weight of the absorbent material contained in the core wrap. The core wrap is not considered as absorbent material for the purpose of assessing the percentage of SAP in the absorbent core.

By “absorbent material” it is meant a material which has some absorbency property or liquid retaining properties, such as SAP, cellulosic fibers as well as synthetic fibers. Typically, glues used in making absorbent cores have no absorbency properties and are not considered as absorbent material. The SAP content may be higher than 80%, for example at least 85%, at least 90%, at least 95%, at least 99%, and even up to and including 100% of the weight of the absorbent material contained within the core wrap. This provides a relatively thin core compared to conventional core typically comprising between 40-60% SAP and high content of cellulose fibers. The absorbent material may in particular comprises less than 15% or less than 10% weight percent of natural or synthetic fibers, less than 5% weight percent, less than 3% weight percent, less than 2% weight percent, less than 1% weight percent, or may even be substantially free of natural and/or synthetic fibers. The absorbent material may advantageously comprise little or no airfelt (cellulose) fibers, in particular the absorbent core may comprise less than 15%, 10%, 5%, 3%, 2%, 1% airfelt (cellulose) fibers by weight of the absorbent core, or may even be substantially free of cellulose fibers.

The example absorbent core 28 of the absorbent article of FIGS. 4-5 is shown in isolation in FIGS. 6-8. The absorbent core may comprises a front side 280, a rear side 282, and two longitudinal sides 284, 286 joining the front side 280 and the rear side 282. The absorbent core may also comprise a generally planar top side and a generally planar bottom side. The front side 280 of the core is the side of the core intended to be placed towards the front waist edge 10 of the absorbent article. The core 28 may have a longitudinal axis 80′ corresponding substantially to the longitudinal axis 80 of the article, as seen from the top in a planar view as in FIG. 1. In an embodiment, the absorbent material may be distributed in higher amount towards the front side than towards the rear side as more absorbency may be required at the front in particular articles. In an embodiment, the front and rear sides of the core may be shorter than the longitudinal sides of the core. The core wrap may be formed by two nonwoven materials, substrates, laminates, or other materials, 16, 16′ which may be at least partially sealed along the sides of the absorbent core. The core wrap may be at least partially sealed along its front side 280, rear side 282, and two longitudinal sides 284, 286 so that substantially no absorbent material leaks out of the absorbent core wrap. The first material, substrate, or nonwoven 16 may at least partially surround the second material, substrate, or nonwoven 16′ to form the core wrap, as illustrated in FIG. 7. The first material 16 may surround a portion of the second material 16′ proximate to the first and second side edges 284 and 286.

The absorbent core of the present disclosure may comprise adhesive, for example, to help immobilizing the SAP within the core wrap and/or to ensure integrity of the core wrap, in particular when the core wrap is made of two or more substrates. The core wrap may extend to a larger area than strictly needed for containing the absorbent material within.

Cores comprising relatively high amount of SAP with various core designs are disclosed in U.S. Pat. No. 5,599,335 (Goldman), EP 1,447,066 (Busam), WO 95/11652 (Tanzer), U.S. Pat. Publ. No. 2008/0312622A1 (Hundorf), and WO 2012/052172 (Van Malderen).

The absorbent material may be a continuous layer present within the core wrap. In other embodiments, the absorbent material may be comprised of individual pockets or stripes of absorbent material enclosed within the core wrap. In the first case, the absorbent material may be, for example, obtained by the application of a single continuous layer of absorbent material. The continuous layer of absorbent material, in particular of SAP, may also be obtained by combining two absorbent layers having discontinuous absorbent material application pattern, wherein the resulting layer is substantially continuously distributed across the absorbent particulate polymer material area, as disclosed in U.S. Pat. Appl. Pub. No. 2008/0312622A1 (Hundorf), for example. The absorbent core 28 may comprise a first absorbent layer and a second absorbent layer. The first absorbent layer may comprise the first material 16 and a first layer 61 of absorbent material, which may be 100% or less of SAP. The second absorbent layer may comprise the second material 16′ and a second layer 62 of absorbent material, which may also be 100% or less of SAP. The absorbent core 28 may also comprise a fibrous thermoplastic adhesive material 51 at least partially bonding each layer of absorbent material 61, 62 to its respective material 16 or 16′. This is illustrated in FIGS. 7-8, as an example, where the first and second SAP layers have been applied as transversal stripes or “land areas” having the same width as the desired absorbent material deposition area on their respective substrate before being combined. The stripes may comprise different amount of absorbent material (SAP) to provide a profiled basis weight along the longitudinal axis of the core 80. The first material 16 and the second material 16′ may form the core wrap.

The fibrous thermoplastic adhesive material 51 may be at least partially in contact with the absorbent material 61, 62 in the land areas and at least partially in contact with the materials 16 and 16′ in the junction areas. This imparts an essentially three-dimensional structure to the fibrous layer of thermoplastic adhesive material 51, which in itself is essentially a two-dimensional structure of relatively small thickness, as compared to the dimension in length and width directions. Thereby, the fibrous thermoplastic adhesive material may provide cavities to cover the absorbent material in the land area, and thereby immobilizes this absorbent material, which may be 100% or less of SAP.

The thermoplastic adhesive material 51 may comprise, in its entirety, a single thermoplastic polymer or a blend of thermoplastic polymers, having a softening point, as determined by the ASTM Method D-36-95 “Ring and Ball”, in the range between 50° C. and 300° C., and/or the thermoplastic adhesive material may be a hotmelt adhesive comprising at least one thermoplastic polymer in combination with other thermoplastic diluents such as tackifying resins, plasticizers and additives such as antioxidants.

The thermoplastic adhesive used for the fibrous layer may have elastomeric properties, such that the web formed by the fibers on the SAP layer is able to be stretched as the SAP swell. Example elastomeric, hotmelt adhesives include thermoplastic elastomers such as ethylene vinyl acetates, polyurethanes, polyolefin blends of a hard component (generally a crystalline polyolefin such as polypropylene or polyethylene) and a Soft component (such as ethylene-propylene rubber); copolyesters such as poly (ethylene terephthalate-co-ethylene azelate); and thermoplastic elastomeric block copolymers having thermoplastic end blocks and rubbery mid blocks designated as A-B-A block copolymers: mixtures of structurally different homopolymers or copolymers, e.g., a mixture of polyethylene or polystyrene with an A-B-A block copolymer; mixtures of a thermoplastic elastomer and a low molecular weight resin modifier, e.g., a mixture of a styrene-isoprenestyrene block copolymer with polystyrene; and the elastomeric, hot-melt, pressure-sensitive adhesives described herein. Elastomeric, hot-melt adhesives of these types are described in more detail in U.S. Pat. No. 4,731,066 issued to Korpman on Mar. 15, 1988.

The thermoplastic adhesive material may be applied as fibers. The fibers may have an average thickness of about 1 to about 50 micrometers or about 1 to about 35 micrometers and an average length of about 5 mm to about 50 mm or about 5 mm to about 30 mm, specifically reciting all 0.1 micrometer increments within the above-specified ranges and any ranges formed therein or thereby. To improve the adhesion of the thermoplastic adhesive material to the materials 16 or 16′ or to any other layer, in particular any other nonwoven layers, such layers may be pre-treated with an auxiliary adhesive. The fibers adhere to each other to form a fibrous layer, which can also be described as a mesh.

Superabsorbent Polymer (SAP)

“Superabsorbent polymers” (“SAP”), as used herein, refer to absorbent materials which are cross-linked polymeric materials that can absorb at least 10 times their weight of an aqueous 0.9% saline solution as measured using the Centrifuge Retention Capacity (CRC) test (EDANA method WSP 241.2-05E). The SAP used may have a CRC value of more than 20 g/g, more than 24 g/g, from 20 to 50 g/g, from 20 to 40 g/g, or from 24 to 30 g/g, specifically reciting all 0.1 g/g increments within the above-specified ranges and any ranges created therein or thereby. The SAP useful with the present disclosure may include a variety of water-insoluble, but water-swellable polymers capable of absorbing large quantities of fluids.

The superabsorbent polymer may be in particulate form so as to be flowable in the dry state. Particulate absorbent polymer materials may be made of poly(meth)acrylic acid polymers. However, starch-based particulate absorbent polymer material may also be used, as well polyacrylamide copolymer, ethylene maleic anhydride copolymer, cross-linked carboxymethylcellulose, polyvinyl alcohol copolymers, cross-linked polyethylene oxide, and starch grafted copolymer of polyacrylonitrile. The superabsorbent polymer may be polyacrylates and polyacrylic acid polymers that are internally and/or surface cross-linked. Suitable materials are described in the PCT Patent Application Nos. WO 07/047,598, WO 07/046,052, WO2009/155265, and WO2009/155264, for example. In some embodiments, suitable superabsorbent polymer particles may be obtained by generally known production processes as described in WO 2006/083584, for example. The superabsorbent polymers may be internally cross-linked, i.e., the polymerization is carried out in the presence of compounds having two or more polymerizable groups which can be free-radically copolymerized into the polymer network. Useful crosslinkers include, for example, ethylene glycol dimethacrylate, diethylene glycol diacrylate, allyl methacrylate, trimethylolpropane triacrylate, triallylamine, tetraallyloxyethane as described in EP-A 530 438, di- and triacrylates as described in EP-A 547 847, EP-A 559 476, EP-A 632 068, WO 93/21237, WO 03/104299, WO 03/104300, WO 03/104301, and in DE-A 103 31 450, mixed acrylates which, as well as acrylate groups, include further ethylenically unsaturated groups, as described in DE-A 103 31 456 and DE-A 103 55 401, or crosslinker mixtures as described, for example, in DE-A 195 43 368, DE-A 196 46 484, WO 90/15830, and WO 02/32962 as well as cross-linkers described in WO2009/155265. The superabsorbent polymer particles may be external surface cross-linked, or post cross-linked. Useful post-crosslinkers include compounds including two or more groups capable of forming covalent bonds with the carboxylate groups of the polymers. Useful compounds include for example alkoxysilyl compounds, polyaziridines, polyamines, polyamidoamines, di- or polyglycidyl compounds as described in EP-A 083 022, EP-A 543 303 and EP-A 937 736, polyhydric alcohols as described in DE-C 33 14 019, cyclic carbonates as described in DE-A 40 20 780, 2-oxazolidone and its derivatives, such as N-(2-hydroxyethyl)-2-oxazolidone as described in DE-A 198 07 502, bis- and poly-2-oxazolidones as described in DE-A 198 07 992, 2-oxotetrahydro-1,3-oxazine and its derivatives as described in DE-A 198 54 573, N-acyl-2-oxazolidones as described in DE-A 198 54 574, cyclic ureas as described in DE-A 102 04 937, bicyclic amide acetals as described in DE-A 103 34 584, oxetane and cyclic ureas as described in EP1,199,327 and morpholine-2,3-dione and its derivatives as described in WO03/031482.

In some embodiments, the SAP may be formed from polyacrylic acid polymers or polyacrylate polymers, for example, having a neutralization degree of from 60% to 90%, or of about 75%, having, for example, sodium counter ions.

The SAP useful for the present disclosure may be of numerous shapes. The term “particles” refers to granules, fibers, flakes, spheres, powders, platelets and other shapes and forms known to persons skilled in the art of superabsorbent polymer particles. In some embodiments, the SAP particles can be in the shape of fibers, i.e., elongated, acicular superabsorbent polymer particles. In those embodiments, the superabsorbent polymer particles fibers may have a minor dimension (i.e., diameter of the fiber) of less than about 1 mm, usually less than about 500 μm, or less than 250 μm down to 50 μm, specifically reciting all 1 μm increments within the above-specified ranges and any ranges formed therein or thereby. The length of the fibers may be about 3 mm to about 100 mm, specifically reciting all 1 mm increments within the above-specified range and any ranges formed therein or thereby. The fibers may also be in the form of a long filament that may be woven.

SAP may be spherical-like particles. In contrast to fibers, “spherical-like particles” have a longest and a smallest dimension with a particulate ratio of longest to smallest particle dimension in the range of 1-5, where a value of 1 would equate a perfectly spherical particle and 5 would allow for some deviation from such a spherical particle. The superabsorbent polymer particles may have a particle size of less than 850 μm, from 50 to 850 μm, from 100 to 710 μm, or from 150 to 650 μm, specifically reciting all 1 μm increments within the above-specified ranges and any ranges formed therein or thereby, as measured according to EDANA method WSP 220.2-05. SAP having a relatively low particle size may help to increase the surface area of the absorbent material which is in contact with liquid exudates and therefore supports fast absorption of liquid exudates.

The SAP may have a particle sizes in the range from 45 μm to 4000 μm, more specifically a particle size distribution within the range of from 45 μm to about 2000 μm, or from about 100 μm to about 1000, 850 or 600 μm, specifically reciting all 1 μm increments within the above-specified ranges and any ranges formed therein or thereby. The particle size distribution of a material in particulate form can be determined, for example, by means of dry sieve analysis (EDANA 420.02 “Particle Size distribution).

In some embodiments herein, the superabsorbent material may be in the form of particles with a mass medium particle size up to 2 mm, between 50 microns and 2 mm or to 1 mm, or from 100 μm, 200 μm, 300 μm, 400 μm, 500 μm, 1000 μm, 800 μm, or 700 μm; as can, for example, be measured by the method set out in for example EP-A-0,691,133. In some embodiments of the present disclosure, the superabsorbent polymer material is in the form of particles whereby at least 80% by weight are particles of a size between 50 μm and 1200 μm and having a mass median particle size between any of the range combinations above. In addition, or in another embodiment of the present disclosure, the particles may be essentially spherical. In yet another or additional embodiment of the present disclosure, the superabsorbent polymer material may have a relatively narrow range of particle sizes, e.g., with the majority (e.g., at least 80%, at least 90%, at least 95%, or even at least 99% by weight) of particles having a particle size between 50 μm and 1000 μm, between 100 μm and 800 μm, or between 200 μm and 600 μm, specifically reciting all 1 μm increments within the above-specified ranges and any ranges formed therein or thereby.

The surface of the SAP may be coated, for example, with a cationic polymer. Certain cationic polymers may include polyamine or polyimine materials. In some embodiments, the SAP may be coated with chitosan materials such as those disclosed in U.S. Pat. No. 7,537,832 B2. In some other embodiments, the SAP may comprise mixed-bed Ion-Exchange absorbent polymers such as those disclosed in WO 99/34841 and WO 99/34842.

The absorbent core may comprise one or more types of SAP.

For most absorbent articles, liquid discharges from a wearer occur predominately in the front half of the article, in particular for a diaper. The front half of the article (as defined by the region between the front edge and a transversal line placed at a distance of half L from the front waist edge 10 or rear waist edge 12 may therefore comprise most of the absorbent capacity of the core. Thus, at least 60% of the SAP, or at least 65%, 70%, 75%, 80%, or 85% of the SAP may be present in the front half of the absorbent article, the remaining SAP being disposed in the rear half of the absorbent article. In other embodiments, the SAP distribution may be uniform through the core or may have other suitable distributions.

The total amount of SAP present in the absorbent core may also vary according to expected user. Diapers for newborns may require less SAP than infant, child, or adult incontinence diapers. The amount of SAP in the core may be about 5 to 60 g or from 5 to 50 g, specifically reciting all 0.1 increments within the specified ranges and any ranged formed therein or thereby. The average SAP basis weight within the (or “at least one”, if several are present) deposition area 8 of the SAP may be at least 50, 100, 200, 300, 400, 500 or more g/m². The areas of the channels (e.g., 27, 27′) present in the absorbent material deposition area 8 are deduced from the absorbent material deposition area to calculate this average basis weight.

Core Wrap

The core wrap may be made of a single substrate, material, or nonwoven folded around the absorbent material, or may comprise two (or more) substrates, materials, or nonwovens which are attached to another. Typical attachments are the so-called C-wrap and/or sandwich wrap. In a C-wrap, as illustrated, for example, in FIGS. 2 and 7, the longitudinal and/or transversal edges of one of the substrates are folded over the other substrate to form flaps. These flaps are then bonded to the external surface of the other substrate, typically by gluing.

The core wrap may be formed by any materials suitable for receiving and containing the absorbent material. Typical substrate materials used in the production of conventional cores may be used, in particular paper, tissues, films, wovens or nonwovens, or laminates or composites of any of these. The core wrap may be formed by a nonwoven web, such as a carded nonwoven, spunbond nonwoven (“S”) or meltblown nonwoven (“M”), and laminates of any of these. For example, spunmelt polypropylene nonwovens may be suitable, in particular those having a laminate web SMS, or SMMS, or SSMMS, structure, and having a basis weight range of about 5 gsm to about 15 gsm. Suitable materials are disclosed in U.S. Pat. No. 7,744,576, U.S. Pat. Publ. No. 2011/0268932A1, U.S. Pat. Publ. No. 2011/0319848A1, and U.S. Pat. Publ. No. 2011/0250413A1. Nonwoven materials provided from synthetic fibers may also be used, such as PE, PET, and/or PP, for example.

If the core wrap comprises a first substrate, nonwoven or material 16 and a second substrate, nonwoven, or materials 16′ these may be made of the same type of material, may be made of different materials, or one of the substrates may be treated differently than the other to provide it with different properties. As the polymers used for nonwoven production are inherently hydrophobic, they may be coated with hydrophilic coatings if placed on the fluid receiving side of the absorbent core. It may be advantageous that the top side of the core wrap, i.e., the side placed closer to the wearer in the absorbent article, be more hydrophilic than the bottom side of the core wrap. A possible way to produce nonwovens with durably hydrophilic coatings is via applying a hydrophilic monomer and a radical polymerization initiator onto the nonwoven, and conducting a polymerization activated via UV light resulting in monomer chemically bound to the surface of the nonwoven. An alternative possible way to produce nonwovens with durably hydrophilic coatings is to coat the nonwoven with hydrophilic nanoparticles, e.g., as described in WO 02/064877.

Permanently hydrophilic nonwovens are also useful in some embodiments. Surface tension, as described in U.S. Pat. No. 7,744,576 (Busam et al.), can be used to measure how permanently a certain hydrophilicity level is achieved. Liquid strike through, as described in U.S. Pat. No. 7,744,576, may be used to measure the hydrophilicity level. The first and/or second substrate may have a surface tension of at least 55, at least 60, or at least 65 mN/m or higher when wetted with saline solution. The substrate may also have a liquid strike through time of less than 5 seconds for a fifth gush of liquid. These values can be measured using the test methods described in U.S. Pat. No. 7,744,576B2: “Determination Of Surface Tension” and “Determination of Strike Through” respectively.

Hydrophilicity and wettability are typically defined in terms of contact angle and the strike through time of the fluids, for example, through a nonwoven fabric. This is discussed in detail in the American Chemical Society publication entitled “Contact angle, wettability and adhesion”, edited by Robert F. Gould (Copyright 1964). A substrate having a lower contact angle between the water and the surface of substrate may be said to be more hydrophilic than another.

The substrates may also be air-permeable. Films useful herein may therefore comprise micro-pores. The substrate may have an air-permeability of from 40 or from 50, to 300 or to 200 m³/(m²×min), as determined by EDANA method 140-1-99 (125 Pa, 38.3 cm²). The material of the core wrap may alternatively have a lower air-permeability, e.g., being non-air-permeable, for example, to facilitate handling on a moving surface comprising vacuum.

The core wrap may be at least partially sealed along all the sides of the absorbent core so that substantially no absorbent material leaks out of the core. By “substantially no absorbent material” it is meant that less than 5%, less than 2%, less than 1%, or about 0% by weight of absorbent material escape the core wrap. The term “seal” is to be understood in a broad sense. The seal does not need to be continuous along the whole periphery of the core wrap but may be discontinuous along part or the whole of it, such as formed by a series of seal points spaced on a line. A seal may be formed by gluing and/or thermal bonding.

If the core wrap is formed by two substrates 16, 16′, four seals may be used to enclose the absorbent material 60 within the core wrap. For example, a first substrate 16 may be placed on one side of the core (the top side as represented in the Figures) and extend around the core's longitudinal edges to at least partially wrap the opposed bottom side of the core. The second substrate 16′ may be present between the wrapped flaps of the first substrate 16 and the absorbent material 60. The flaps of the first substrate 16 may be glued to the second substrate 16′ to provide a strong seal. This so called C-wrap construction may provide benefits such as improved resistance to bursting in a wet loaded state compared to a sandwich seal. The front side and rear side of the core wrap may then also be sealed by gluing the first substrate and second substrate to another to provide complete encapsulation of the absorbent material across the whole of the periphery of the core. For the front side and rear side of the core, the first and second substrates may extend and may be joined together in a substantially planar direction, forming for these edges a so-called sandwich construction. In the so-called sandwich construction, the first and second substrates may also extend outwardly on all sides of the core and be sealed flat, or substantially flat, along the whole or parts of the periphery of the core typically by gluing and/or heat/pressure bonding. In an embodiment, neither the first nor the second substrates need to be shaped, so that they can be rectangularly cut for ease of production but other shapes are within the scope of the present disclosure.

The core wrap may also be formed by a single substrate which may enclose as in a parcel wrap the absorbent material and be sealed along the front side and rear side of the core and one longitudinal seal.

SAP Deposition Area

The absorbent material deposition area 8 may be defined by the periphery of the layer formed by the absorbent material 60 within the core wrap, as seen from the top side of the absorbent core. The absorbent material deposition area 8 may have various shapes, in particular, a so-called “dog bone” or “hour-glass” shape, which shows a tapering along its width towards the middle or “crotch” region of the core. In this way, the absorbent material deposition area 8 may have a relatively narrow width in an area of the core intended to be placed in the crotch region of the absorbent article, as illustrated in FIG. 1. This may provide better wearing comfort. The absorbent material deposition area 8 may thus have a width (as measured in the transversal direction) at its narrowest point which is less than about 100 mm, 90 mm, 80 mm, 70 mm, 60 mm, or even less than about 50 mm. This narrowest width may further be at least 5 mm, or at least 10 mm, smaller than the width of the deposition area 8 at its largest point in the front and/or rear regions deposition area 8. The absorbent material deposition area 8 may also be generally rectangular, for example as shown in FIGS. 4-6, but other deposition areas, such as a “T,” “Y,” “sand-hour,” or “dog-bone” shapes are also within the scope of the present disclosure.

The basis weight (amount deposited per unit of surface) of the SAP may also be varied along the deposition area 8 to create a profiled distribution of absorbent material, in particular SAP, in the longitudinal direction, in the transversal direction, or both directions of the core. Hence, along the longitudinal axis of the core, the basis weight of absorbent material may vary, as well as along the transversal axis, or any axis parallel to any of these axes. The basis weight of SAP in areas of relatively high basis weight may thus be at least 10%, 20%, 30%, 40%, or 50% higher than in an area of relatively low basis weight. In one embodiment, the SAP present in the absorbent material deposition area 8 at the level of the crotch point C may have more SAP per unit of surface deposited as compared to another area of the absorbent material deposition area 8.

The absorbent material may be deposited using known techniques, which may allow relatively precise deposition of SAP at relatively high speed. In particular, the SAP printing technology as disclosed in U.S. Pat. Publ. No. 2008/0312617 and U.S. Pat. Publ. No. 2010/0051166A1 (both to Hundorf et al.) may be used. This technique uses a printing roll to deposit SAP onto a substrate disposed on a grid of a support which may include a plurality of cross bars extending substantially parallel to and spaced from one another so as to form channels extending between the plurality of cross-bars. This technology allows high-speed and precise deposition of SAP on a substrate. The channels of the absorbent core may be formed for example by modifying the pattern of the grid and receiving drums so that no SAP is applied in areas corresponding to the channels. EP application number 11169396.6 discloses this modification in more details.

Channels

The absorbent material deposition area 8 may comprise at least one channel 26, which is at least partially oriented in the longitudinal direction of the article 80 (i.e., has a longitudinal vector component). Other channels may be at least partially oriented in the lateral direction (i.e., has a lateral vector component) or in any other direction. If the following, the plural form “channels” will be used to mean “at least one channel”. The channels may have a length L′ projected on the longitudinal axis 80 of the article that is at least 10% of the length L of the article. The channels may be formed in various ways. For example, the channels may be formed by zones within the absorbent material deposition area 8 which may be substantially free of, or free of, absorbent material, in particular SAP. In addition or alternatively, the channel(s) may also be formed by continuously or discontinuously bonding the top side of the core wrap to the bottom side of the core wrap through the absorbent material deposition area 8. The channels may be continuous but it is also envisioned that the channels may be intermittent. The acquisition-distribution system or layer 50, or another layer of the article, may also comprise channels, which may or not correspond to the channels of the absorbent core.

In some embodiments, the channels may be present at least at the same longitudinal level as the crotch point C or the lateral axis 60 in the absorbent article, as represented in FIG. 1 with the two longitudinally extending channels 26, 26′. The channels may also extend from the crotch region 7 or may be present in the front waist region 5 and/or in the rear waist region 6 of the article.

The absorbent core 28 may also comprise more than two channels, for example, at least 3, at least 4, at least 5, or at least 6 or more. Shorter channels may also be present, for example in the rear waist region 6 or the front waist region 5 of the core as represented by the pair of channels 27, 27′ in FIG. 1 towards the front of the article. The channels may comprise one or more pairs of channels symmetrically arranged, or otherwise arranged relative to the longitudinal axis 80.

The channels may be particularly useful in the absorbent core when the absorbent material deposition area is rectangular, as the channels may improve the flexibility of the core to an extent that there is less advantage in using a non-rectangular (shaped) core. Of course channels may also be present in a layer of SAP having a shaped deposition area.

The channels may extend substantially longitudinally, which means that each channel extends more in the longitudinal direction than in the transverse direction, or at least twice as much in the longitudinal direction than in the transverse direction (as measured after projection on the respective axis). In other embodiments, the channels may extend substantially laterally, which means that each channel extends more in the lateral direction than in the transverse direction, or at least twice as much in the longitudinal direction than in the transverse direction (as measured after projection on the respective axis).

The channels may be completely oriented longitudinally and parallel to the longitudinal axis or completely oriented transversely and parallel to the lateral axis, but also may be curved. In various embodiments, some or all the channels, in particular the channels present in the crotch region 7, may be concave towards the longitudinal axis 80, as, for example, represented in FIG. 1 for the pair of channels 26, 26′. The radius of curvature may typically be at least equal (and may be at least 1.5 or at least 2.0 times this average transverse dimension) to the average transverse dimension of the absorbent layer; and also straight but under an angle of (e.g., from 5°) up to 30°, up to 20°, up to 10° with a line parallel to the longitudinal axis. The radius of curvature may be constant for a channel, or may vary along its length. This may also include channels with an angle therein, provided the angle between two parts of a channel is at least 120°, at least 150°; and in any of these cases, provided the longitudinal extension of the channel is more than the transverse extension. The channels may also be branched. For example, a central channel superposed with the longitudinal axis in the crotch region 7 which branches towards the rear waist edge 12 and/or towards the front waist edge 10 of the article.

In some embodiments, there is no channel that coincides with the longitudinal axis 80 of the article or the core. When present as symmetrical pairs relative to the longitudinal axis 80, the channels may be spaced apart from one another over their whole longitudinal dimension. The smallest spacing distance may be at least 5 mm, at least 10 mm, or at least 16 mm, for example.

Furthermore, in order to reduce the risk of fluid leakages, the longitudinal main channels may not extend up to any of the edges of the absorbent material deposition area 8, and may therefore be fully encompassed within the absorbent material deposition area 8 of the core. The smallest distance between a channel and the closest edge of the absorbent material deposition area 8 may be at least 5 mm.

The channels may have a width Wc along at least part of its length which is at least 2 mm, at least 3 mm, at least 4 mm, up to for example 20 mm, 16 mm, or 12 mm, for example. The width of the channel may be constant through substantially the whole length of the channel or may vary along its length. When the channels are formed by absorbent material-free zone within the absorbent material deposition area 8, the width of the channels is considered to be the width of the material free zone, disregarding the possible presence of the core wrap within the channels. If the channels are not formed by absorbent material free zones, for example mainly though bonding of the core wrap through the absorbent material zone, the width of the channels if the width of this bonding.

At least some or all of the channels may be permanent channels, meaning their integrity is at least partially maintained both in the dry state and in the wet state. Permanent channels may be obtained by provision of one or more adhesive materials, for example, the fibrous layer of adhesive material or construction glue that helps adhere a substrate with an absorbent material within the walls of the channel. Permanent channels may also be formed by bonding the upper side and lower side of the core wrap (e.g., the first substrate 16 and the second substrate 16′) and/or the topsheet 24 to the backsheet 25 together through the channels. Typically, an adhesive may be used to bond both sides of the core wrap or the topsheet and the a backsheet through the channels, but it is possible to bond via other known processes, such as pressure bonding, ultrasonic bonding, heat bonding, or combination thereof. The core wrap or the topsheet 24 and the backsheet 25 may be continuously bonded or intermittently bonded along the channels. The channels may advantageously remain or become visible at least through the topsheet and/or backsheet when the absorbent article is fully loaded with a fluid. This may be obtained by making the channels substantially free of SAP, so they will not swell, and sufficiently large so that they will not close when wet. Furthermore, bonding the core wrap to itself or the topsheet to the backsheet through the channels may be advantageous.

FIG. 9 illustrates an example absorbent core 28 of the present disclosure. This core 28, and the cores illustrated in FIGS. 12 and 14-20, may be used in the absorbent articles of the present disclosure and may have many or all of the features discussed herein. In various embodiments, profiles of the sum of the lateral widths of one or more channels (plotted on the Y-axis) may be plotted relative to the longitudinal length about the longitudinal axis 80′ (plotted on the X-axis) of portions of the one or more channels. Stated another way, the sum of the lateral widths of the one or more channels over a particular a longitudinal length about the longitudinal axis 80′ of the one or more channels may be plotted to create a profile.

To obtain data for such profiles, first, the absorbent article or the absorbent core should be placed on a light table or a light source suitable for viewing the channels within the absorbent core. If the absorbent core is being used, it should first be removed from the absorbent article using any suitable techniques. The wearer-facing surface of the absorbent article or the absorbent core should face away from the surface of the light table. The absorbent article or the absorbent core should be attached to the light illuminating surface of the light table or light source using tape or other attachment members. Second, a longitudinal length along the longitudinal axis 80 or 80′ (e.g., 5 mm, 10 mm, 15 mm, 20 mm, 50 mm, 100 mm) should be selected for measurement. A rigid or flexible tape measure, graduated in mm, should be used to measure the longitudinal length along the longitudinal axis 80 or 80′. A dot should be placed on the absorbent article or the absorbent core at either end of the longitudinal length on the longitudinal axis 80 or 80′. Next, a line that is parallel to the lateral axis 90′ should be drawn through each dot. This enclosed area “EA” between the lines is the area to be measured. The enclosed area “EA” can be a portion of the absorbent article's or absorbent core's longitudinal length or the entire length of the absorbent article or absorbent core from the front waist edge 10 or front side 280 to the rear waist edge 12 or rear side 282, respectively. In some instances, it may be desirable to profile a large longitudinal length of the absorbent article or absorbent core, while, in other instances, it may be desirable to profile a small longitudinal length. Once the longitudinal length to be used is indicated on the absorbent article or the absorbent core, the sum of the lateral widths of the channels within the enclosed area should be measured parallel to the lateral axis every 5 mm along the longitudinal length using the tape measure. If only one channel is present at a particular 5 mm increment within the enclosed area “EA” only one width will be the sum of the lateral widths of the channel at that particular increment, while if more than one channel is present at a particular 5 mm increment within the enclosed area “EA”, the sum of the lateral widths at that increment will be the sum of those two or more lateral widths of the channels. Those results should then be plotted to create a profile or graph with the sum of the lateral widths of the one or more channels being plotted on the Y-axis and the longitudinal length along the longitudinal axis 80 or 80′ at which they were taken on the X-axis. The X-axis should be graduated in 5 mm increments to correspond with lateral width measurements being taken every 5 mm along the longitudinal axis 80 or 80′. The Y-axis may be graduated in 1 mm increments, 2 mm increments, or greater than 2 mm increments depending on the values of the sum of the lateral widths of the one or more channels.

Referring to FIG. 9, as an example, the enclosed area “EA” is between the two dashed lines at the end of the longitudinal length L′ of the one or more channels along the longitudinal axis 80′. For all absorbent core 28 embodiments, the longitudinal axis 80′ corresponds with the longitudinal axis 80 of the absorbent article and the lateral axis 90′ corresponds with the lateral axis 90 of the absorbent article. Lateral width measurements of the channels 26 and 26′ are taken parallel to the lateral axis 90′ every 5 mm. Each 5 mm increment is indicated as a line “L” in FIG. 9. The first measurement is taken 5 mm into the enclosed area “EA” from the top dashed line “TL”. While FIG. 9 is not to scale, a profile of the sum of the lateral widths taken in a direction parallel to the lateral axis 90′ every 5 mm along the longitudinal axis 80′ would look generally like the example profile of FIG. 10. The longitudinal length along the longitudinal axis 80 is plotted on the X-axis and the sum of the lateral widths is plotted on the Y-axis. In this example, the sums of the laterals widths of the channels within the enclosed area (every 5 mm) are all 10 mm (5 mm per channel). Other sums of the lateral widths of the channels are within the scope of the present disclosure. Example sums of the lateral widths may be in the range of 5 mm to 120 mm, specifically reciting all 1 mm increments within the specified range and any ranges formed therein or thereby. The enclosed area may extend at least 5 mm, at least 10 mm, at least 15 mm, at least 20 mm, at least 30 mm, at least 40 mm, at least 50 mm, at least 60 mm, or at least 70 mm, for example, along the longitudinal axis 90′. The enclosed area may be smaller for sanitary napkins since their absorbent cores are typically smaller than diapers. Thus, the profile from FIG. 9 is constant, or substantially constant, since the sum of the lateral widths of the channels 26 and 26′ taken every 5 mm along the longitudinal axis 80′ should have the same value. If only channel 26 were present in the enclosed area of FIG. 9, the profile would also be constant, or substantially constant, since the lateral width of the channel 26 measured parallel to the lateral axis 90′ is constant, or substantially constant, in this embodiment along the longitudinal length L′. The second channel 26′ may be positioned on the opposite side of the longitudinal axis 80′ as the first channel 26. The profile of the second channel 26′ may also be constant, or substantially constant, about a longitudinal length, such as L′ of FIG. 9, since the lateral width of the second channel 26′ is constant, or substantially constant, about the channel's longitudinal length L′. In other embodiments, the lateral widths of each channel 26 and 26′ may be constant, substantially constant, or variable along a longitudinal length or a portion thereof. In other embodiments, one channel (e.g., channel 26) may have a constant, or substantially constant, lateral width about its longitudinal length, while the other channel (e.g., channel 26′) may have a varying lateral width about its longitudinal length. In the embodiment of FIG. 9, the channel 26 and the channel 26′ may have the same longitudinal length along the longitudinal axis 80′. In other embodiments, the first and second or more channels may each have a different longitudinal length along the longitudinal axis 80′.

The above is merely an example non-limiting configuration of how to measure the sum of the lateral widths over a particular longitudinal length along the longitudinal axis 80′. As discussed below, other profiles are also within the scope of the present disclosure based on the configurations and/or orientations of the channels within the measured longitudinal length and/or enclosed area.

Again referring to FIG. 9, a profile of the sum of the lateral widths of the channels 26 and 26′ over a portion of the longitudinal length on a first side of the lateral axis 90′ may be different than a profile of the sum of the lateral widths of the channels 26 and 26′ over another portion of the longitudinal length on a second side of the lateral axis 90′. In other embodiments, the profile of the sum of the lateral widths of the channels 26 and 26′ over a portion of the longitudinal length on the first side of the lateral axis 90′ may be the same, or substantially the same, as the profile of the sum of the lateral widths of the channels 26 and 26′ over a portion of the longitudinal length on the second side of the lateral axis 90′

In an embodiment, referring to FIG. 1, the absorbent core 28 may comprise at least three channels or four channels (e.g., 26, 26′, 27, 27′). These channels may be free of, or substantially free of (e.g., less than 10%, less than 5%, less than 3%, less than 2%, or less than 1%), superabsorbent polymers and may be at least partially oriented in the longitudinal direction and/or may be at least partially oriented in the lateral direction. In various embodiments, the longitudinal lengths of the channels 26 and 26′ about the longitudinal axis 80 may be the same, substantially the same (e.g., within 2 mm or less of each other), or different and the longitudinal lengths of the channels 27 and 27′ about the longitudinal axis 80 may be the same, substantially the same, or different. The longitudinal length of the channels 26 and 26′ may be larger than the longitudinal length of the channels 27 and 27′. The average lateral width over the longitudinal lengths of the channels 27 and 27′ may be the same, substantially the same, or may be different. Likewise, the average lateral width over the longitudinal lengths of the channels 26 and 26′ may be the same, substantially the same, or may be different. The average lateral width of any of the channels 26, 26′, 27, and 27′ may be the same, substantially the same, or different. This rationale may apply to any channel configurations disclosed herein.

In an embodiment, referring again to FIG. 1, at least two of the three channels 26, 26′, 27, and 27′ may be at least partially oriented in the longitudinal direction along of the longitudinal axis 80 of the article. Each of the channels 26, 26′, 27, and 27′ may have lateral widths taken parallel to the lateral axis 90. Referring to FIG. 11, a profile of the sum of the lateral widths of the channels over a longitudinal length along the longitudinal axis 80 of at least 5 mm, at least 10 mm, at least 15 mm, at least 20 mm, at least 25 mm, at least 30 mm, at least 35 mm, at least 40 mm, at least 45 mm, at least 50 mm or greater taken along the longitudinal axis 80 may have two maximum peaks “MP.” The maximum peaks may be separated from each other by a gap “G” extending at least 1 mm, at least 3 mm, at least 5 mm, at least 10 mm, at least 15 mm, at least 20 mm or greater of the longitudinal length about the longitudinal axis 80. An example of such a profile is illustrated in FIG. 11. The profile of FIG. 11 was taken between the longitudinal length represented by lines A and B every 5 mm in longitudinal length (represented by dots along the first side edge 3). Lines parallel to the lateral axis 90 and intersecting each dot should be drawn on the absorbent article. The sum of the lateral width of the channels taken parallel to the lateral axis 90 should be measured on each line using the tape measure. Although the maximum peaks “MP” of FIG. 11 are illustrated separated by a 5 mm gap “G”, this gap could be less than 1 mm or greater than 1 mm, for example, 1-15 mm or 1-9 mm.

Again referring to FIG. 11, the profile of the sum of the lateral widths of the channels 26, 26′, 27, and/or 27′ over a longitudinal length of at least 20 mm taken along the longitudinal axis 80 may be bimodal and may have a portion between the two modes where the sum of the lateral widths of at least three of the channels 26, 26′, 27, and 27′ or all of the channels is zero. This portion where the sum of the lateral widths of at least three of the channels 26, 26′, 27, and 27′ or all of the channels is zero is indicated by the gap G in FIG. 11.

In another embodiment, referring to FIG. 12, the absorbent core 28 may comprise the first channel 26 and the second channel 26′ as described above and one or more pockets 29 that are free of, or substantially free of, the superabsorbent polymers. As an example, the pocket 29 may have a width dimension of 20 mm to 110 mm or less or greater, such as 90 mm (about the lateral axis 90′) and a length dimension of 30 mm to 00 mm or less or greater, such as 50 mm (about the longitudinal axis 80′). The one or more pockets 29 may have a portion positioned on the longitudinal axis 80′ and may be positioned in the front waist region 5, the rear waist region 6, and/or the crotch region 7. In another embodiment, a pocket may extend into two or more regions. Although FIGS. 9, 12 and 14-20 only show an absorbent core 28, it will be understood that the front waist region 5, the rear waist region 6, and the crotch region 7 will generally correspond with such regions on the absorbent article as illustrated in FIG. 1. A portion of the one or more pockets 29 may not be positioned on the longitudinal axis 80′. In an embodiment, the one or more pockets 29 may have a portion positioned on the lateral axis 90′. The pocket 29 has lateral widths measured parallel to the lateral axis 90′ and longitudinal lengths measured parallel to the longitudinal axis 80′. A profile of the sum of the lateral widths of the first and second channels 26 and 26′ and the lateral widths of the pocket 29 over a longitudinal length of 50 mm taken along the longitudinal axis 80′ may have two separate, constant, or substantially constant portions, as illustrated in representative form in FIG. 13. FIG. 13 is the sum of the lateral widths of the superabsorbent polymer free, or substantially superabsorbent polymer free, areas of the channels 26 and 26′ and the pocket 29 taken from line C to line D in FIG. 12. The longitudinal length along the longitudinal axis 80′ between lines C and D may be at least 50 mm or less or more. As can be seen from FIG. 13, the profile has two constant, or substantially constant portions, representing the sum of the lateral widths of the channels alone, and one portion larger than the constant, or substantially constant portions, representing the sum of the lateral widths of the channels 26 and 26′ and the lateral widths of the pocket 29. The sum of the lateral widths of the first channel 26, the second channel 26′, and the pocket 29 at a point intermediate lines C and D may be in the range of about 20 mm to about 100 mm, for example. The lateral widths should be measured every 5 mm along the longitudinal axis 80′ as discussed above and between lines C and D. The pocket 29 may be a bowel movement “BM” pocket configured to retain BM. In another embodiment, referring to FIG. 14, the pocket 29′ may be positioned at least partially in the front waist region 5 and may be a urine management or retention pocket. In still another embodiment, referring to FIG. 15, the pocket 29″ may be positioned at least partially in the crotch region 7 and may be a urine management or retention pocket and/or a BM pocket. The pocket 29″ may have longitudinal side edges formed by the laterally inboard sides of the channels 26 and 26′ or may have longitudinal side edges formed independently of the laterally inboard side edges of the channels 26 and 26′. The pockets 29, 29′, or 29″ may have lateral widths measured parallel to the lateral axis 90′ every 5 mm along the longitudinal axis 80′ in the range of 10 mm to 110 mm, 20 mm to 100 mm, or 30 mm to 95 mm, specifically reciting all 1 mm increments within the above-specified ranges and any ranges formed therein or thereby.

In yet another embodiment, referring to FIG. 16, the absorbent core 28 may comprise the first channel 26 and/or the second channel 26′ and a third channel 26″ (sometimes referred to in the claims as a second channel if one of the first and second channels 26 and 26′ are not recited). The third channel 26″ may be free of, or substantially free of, superabsorbent polymers and may be positioned in the rear waist region 6, the crotch region 7, and/or the front waist region 5. The third channel 26″ may be positioned within 0-50 mm from the rear waist edge 12 or the rear side 282 or within 0-50 mm from the front waist edge 10 or the front side 280. All 1 mm increments within the above-specified ranges are specifically recited herein including any ranges formed therein or thereby. A sum of the lateral widths of the first channel 26 and the third channel 26″ or the first channel 26, the second channel 26′, and the third channel 26″ at a point along the longitudinal axis (for example, point E of FIG. 16) that is 50 mm, or 30 mm, or 20 mm, or 15 mm, or 10 mm, or 5 mm, or 1 mm, or less from the rear side 282 or the rear waist edge 12 or the front side 280 or front waist edge 10 may be greater than zero. FIG. 17 illustrates an absorbent core 28 comprising a first channel 26, a second channel 26′, a third channel 31, and a fourth channel 31′. Any of these channels may be optional. The sum of the lateral widths of the third channel 31 and the fourth channel 31′ at a point along the longitudinal axis 80′ (for example, point F of FIG. 17) that is 50 mm, or 30 mm, or 20 mm, or 15 mm, or 10 mm, or 5 mm, or 3 mm, or 1 mm, or less from the rear waist edge 12, the rear side 282, the front waist edge 10, or the front side 280 may be greater than zero.

In an embodiment, referring to FIG. 18, the first channel 26 and the second channel 26′ may each have a first arcuate portion 33 in the front waist region 5 and a second arcuate portion 33′ in the rear waist region 6. The arcuate portions 33 and 33′ may face the longitudinal axis 80′. The first channel 26 and the second channel 26′ may also have a third arcuate portion 33″ in the crotch region 7 or a non-arcuate portion in 33″ the crotch region 7. The arcuate portions 33″ or the portions 33″ may also face the longitudinal axis 80′. Tangent lines 35 of the arcuate portions 33 may intersect the longitudinal axis 80′ to create angle A1. The angle of intersection A1 between the tangent lines 35 and the longitudinal axis 80′ may be in the range of 10 degrees to 80 degrees, 20 degrees to 75 degrees, 30 degrees to 60 degrees, or 45 degrees. Tangent lines 35′ of the arcuate portions 33′ may intersect the longitudinal axis 80′ to create angle A2. The angle of intersection A2 between the tangent lines 35′ and the longitudinal axis 80′ may be in the range of 10 degrees to 80 degrees, 20 degrees to 75 degrees, 30 degrees to 60 degrees, or 45 degrees. Tangent lines 35″ of the arcuate portions 33″ may intersect the longitudinal axis 80′ to create angle A3. The angle of intersection A3 between the tangent lines 35″ and the longitudinal axis 80′ may be in the range of 0.1 degrees to 35 degrees or 1 degree to 20 degrees. In an embodiment, tangent lines may extend from the non-arcuate portions 33″ in the crotch region 7. The tangent lines may not intersect the longitudinal axis 80′ and may instead extend in directions parallel to the longitudinal axis 80′. All 0.5 degree increments within the ranges specified in this paragraph are recited herein including any ranges formed therein or thereby.

As can be seen in FIG. 18, the first tangent line 35 taken from the first arcuate portion 33 on a first side of the longitudinal axis 80′ may have a positive slope (rise/run) and the first tangent line 35 taken from the first arcuate portion 33 on the second side of the longitudinal axis 80′ may have a negative slope. The second tangent line 35′ taken from the second arcuate portion 33′ on a first side of the longitudinal axis 80′ may have a negative slope and the second tangent line 35′ taken from the second arcuate portion 33′ on the second side of the longitudinal axis 80′ may have a positive slope. The tangent lines 35″ may also have a positive or a negative slope. The slopes of the various tangent lines may be different if the configuration of the channels is different.

Again referring to FIG. 18, angles A1, A2, and A3 on a first side of the longitudinal axis 80′ may be different than, the same as, or substantially the same as angles A1, A2, and A3, respectively, on a second side of the longitudinal axis 80′. In an embodiment, with respect to angles on one side of the longitudinal axis 80′, angle A1 may be greater than angles A2 and A3 and angle A2 may be greater than angle A3. In other embodiments, with respect to angles on one side of the longitudinal axis 80′, angle A1 and angle A2 may be the same or substantially the same, while angle A3 may be less than angles A1 and A2. In still other embodiments, any of the angles on one side of the longitudinal axis 80′ may be the same or different.

The tangent lines 35 are taken from portions of the arcuate portions 33 in the front waist region 5. The tangent lines 35′ are taken from portions of the arcuate portions 33′ in the rear waist region 6. The tangent lines 35″ are taken from portions of the arcuate portions 33″ in the crotch region 7.

The longitudinal axis 80 or 80′ can be drawn on an absorbent article or the absorbent core, respectively, by connecting the midpoints of the first waist edge 10 or first side 280 and the second waist edge 12 or second side 282, respectively. The tangent lines can be drawn on the absorbent article or the absorbent core using a straight edge. Multiple tangent lines may be drawn on an arcuate portion in the front waist region 5, the rear waist region 6, and/or the crotch region 7. The tangent lines should be drawn long enough to intersect the longitudinal axis 80 or 80′ unless they are positioned parallel to the longitudinal axis 80 or 80′. A protractor, graduated in 1 degree increments, may then be used to measure the angles (A1, A2, and A3) between the tangent lines and the longitudinal axis 80 or 80′. If additional channels are present in the absorbent core 28, additional tangent lines may be drawn on those channels in the same or a similar fashion.

In an embodiment, referring to FIG. 19, in additional to the first and second channels 26 and 26′ discussed above, an absorbent core may comprise a channel or pocket 37 that is free of, or substantially free of, superabsorbent polymers. A portion of the channel or pocket 37 may be located on the longitudinal axis 80′. The channel or pocket 37 may comprise an arcuate portion 39 facing the side 284 or the second side edge 4 and another arcuate portion 39′ facing the side 282 or the first side edge 3. An angle, A4, between a tangent line 41′ (or 41) of the arcuate portion 39′ (or 39) and the longitudinal axis 80′ may be in the range of about 0.1 degrees to 40 degrees, 0.1 degrees to 20 degrees, 0.1 degrees to 15 degrees, 0.1 degrees to 10 degrees, or 0.1 degrees to five degrees, specifically reciting all 0.1 degree increments within the above-specified ranges and any ranges formed therein or thereby. In an embodiment, the tangent line 41 (or 41′) may extend parallel to the longitudinal axis 80′ and never intersect the longitudinal axis 80′. The channel or pocket 37 may be positioned at least partially within the front waist region 5, the rear waist region 6, and/or the crotch region 7.

In an embodiment, referring to FIG. 20, in addition to the first and second channels 26 and 26′, an absorbent core 28 may comprise a channel or a pocket 43 having a portion positioned on the longitudinal axis 80′. The channel or pocket 43 may have a longitudinal length in the range of 10 mm to 150 mm and a lateral width of 10 mm to about 150 mm, specifically reciting all 1 mm increments within the specified ranges and all ranges formed therein or thereby. Other dimensions are also within the scope of the present disclosure. The channel or the pocket 43 may be located in the front waist region 5 or the rear waist region 6, or both. The channel or pocket 43 may have an arcuate portion 45 facing the front side 280 or the front waist edge 10 if the channel or pocket 43 is located in the front waist region 5 and an arcuate portion 45 facing the rear side 282 or the rear waist region 12 if the channel or pocket 43 is located in the rear waist region 6. The channel or pocket 43 may extend into the crotch region 7 in some instances. A tangent line 47 of the arcuate portion 45 may create an angle with the longitudinal axis 80′ in the range of 70 degrees to 110 degrees, 80 degrees to 100 degrees, 85 degrees to 85 degrees, about 90 degrees, or 90 degrees, specifically reciting all 0.5 degree increments within the specified ranges and any ranges formed therein or thereby.

In an embodiment, referring to FIG. 21, in addition to the first and second channels 26 and 26′, an absorbent core 28 may comprise a pocket 53 in the crotch region 7 and/or the rear waist region 6 and one or more channels 55 in the rear waist region 6 and/or the crotch region 7. In another embodiment, the pocket 53 may be in the crotch region 7 and/or the front waist region 5 and the one or more channels 55 may be in the crotch region 7 and/or the front waist region 5. The pocket 53 and the one or more channels 55 may be BM pockets or channels and/or urine management pockets and/or channels. The channels 55 may extend generally in the lateral direction about the lateral axis 90′. The various parameters discussed herein may apply to FIG. 21, if suitable. For instance, at least one, or all of, the channels 55 may have a tangent line 59 extending from an arcuate portion 57 thereof. The angle formed between the tangent line 59 and the longitudinal axis 80′ may be 80 degrees to 100 degrees, about 90 degrees, or 90 degrees, for example.

Barrier Leg Cuffs

The absorbent article may comprise a pair of barrier leg cuffs 34. Each barrier leg cuff may be formed by a piece of material which is bonded to the article so it can extend upwards from the inner surface of the article and provide improved containment of liquids and other body exudates approximately at the junction of the torso and legs of the wearer. The barrier leg cuffs are delimited by a proximal edge 64 joined directly or indirectly to the topsheet 24 and/or the backsheet 25 and a free terminal edge 66, which is intended to contact and form a seal with the wearer's skin. The barrier leg cuffs extend at least partially between the front waist edge 10 and the rear waist edge 12 of the absorbent article on opposite sides of the longitudinal axis 80 and are at least present at the level of the crotch point (C) or crotch region. The barrier leg cuffs may be joined at the proximal edge 64 with the chassis of the article by a bond 65 which may be made by gluing, fusion bonding, or combination of other suitable bonding processes. The bond 65 at the proximal edge 64 may be continuous or intermittent. The bond 65 closest to the raised section of the leg cuffs delimits the proximal edge 64 of the standing up section of the leg cuffs.

The barrier leg cuffs may be integral with the topsheet 24 or the backsheet 25 or may be a separate material joined to the article's chassis. The material of the barrier leg cuffs may extend through the whole length of the diapers but may be “tack bonded” to the topsheet 24 towards the front waist edge 10 and rear waist edge 12 of the article so that in these sections the barrier leg cuff material remains flush with the topsheet 24.

Each barrier leg cuff 34 may comprise one, two or more elastic strings 35 close to this free terminal edge 66 to provide a better seal.

In addition to the barrier leg cuffs 34, the article may comprise gasketing cuffs 32, which are joined to the chassis of the absorbent article, in particular to the topsheet 24 and/or the backsheet 25 and are placed externally relative to the barrier leg cuffs. The gasketing cuffs 32 may provide a better seal around the thighs of the wearer. Each gasketing leg cuff may comprise one or more elastic strings or elastic elements in the chassis of the absorbent article between the topsheet 24 and backsheet 25 in the area of the leg openings.

U.S. Pat. No. 3,860,003 describes a disposable diaper which provides a contractible leg opening having a side flap and one or more elastic members to provide an elasticized leg cuff (a gasketing cuff). U.S. Pat. No. 4,808,178 and U.S. Pat. No. 4,909,803 issued to Aziz et al. describes disposable diapers having “stand-up” elasticized flaps (barrier leg cuffs) which improve the containment of the leg regions. U.S. Pat. No. 4,695,278 and U.S. Pat. No. 4,795,454 issued to Lawson and to Dragoo respectively, describe disposable diapers having dual cuffs, including gasketing cuffs and barrier leg cuffs. All or a portion of the barrier leg and/or gasketing cuffs may be treated with a lotion.

Acquisition-Distribution System

The absorbent articles of the present disclosure may comprise an acquisition-distribution layer or system 50 (herein “ADS”). One function of the ADS is to quickly acquire the fluid and distribute it to the absorbent core in an efficient manner. The ADS may comprise one, two or more layers, which may form a unitary layer or may remain as discrete layers which may be attached to each other. In an embodiment, the ADS may comprise two layers: a distribution layer 54 and an acquisition layer 52 disposed between the absorbent core and the topsheet, but the present disclosure is not limited to this embodiment.

The ADS may comprise SAP as this may slow the acquisition and distribution of the fluid. Suitable ADS are described in WO 2000/59430 (Daley), WO 95/10996 (Richards), U.S. Pat. No. 5,700,254 (McDowall), and WO 02/067809 (Graef), for example.

Distribution Layer

The distribution layer of the ADS may comprise at least 50% by weight of cross-linked cellulose fibers. The cross-linked cellulosic fibers may be crimped, twisted, or curled, or a combination thereof including crimped, twisted, and curled. This type of material is disclosed in U.S. Pat. Publ. No. 2008/0312622 A1 (Hundorf). The cross-linked cellulosic fibers provide higher resilience and therefore higher resistance to the first absorbent layer against the compression in the product packaging or in use conditions, e.g., under baby weight. This provides the core with a higher void volume, permeability, and liquid absorption, and hence reduced leakage and improved dryness.

Example chemically cross-linked cellulosic fibers suitable for a distribution layer are disclosed in U.S. Pat. No. 5,549,791, U.S. Pat. No. 5,137,537, WO 9534329, or U.S. Pat. Publ. No. 2007/118087. Example cross-linking agents include polycarboxylic acids such as citric acid and/or polyacrylic acids such as acrylic acid and maleic acid copolymers.

The distribution layer comprising cross-linked cellulose fibers of the present disclosure may comprise other fibers, but this layer may advantageously comprise at least 50%, or 60%, or 70%, or 80%, or 90%, or even up to 100%, by weight of the layer, of cross-linked cellulose fibers (including the cross-linking agents). Examples of such mixed layer of cross-linked cellulose fibers may comprise about 70% by weight of chemically cross-linked cellulose fibers, about 10% by weight polyester (PET) fibers, and about 20% by weight untreated pulp fibers. In another example, the layer of cross-linked cellulose fibers may comprise about 70% by weight chemically cross-linked cellulose fibers, about 20% by weight lyocell fibers, and about 10% by weight PET fibers. In another example, the layer may comprise about 68% by weight chemically cross-linked cellulose fibers, about 16% by weight untreated pulp fibers, and about 16% by weight PET fibers. In another example, the layer of cross-linked cellulose fibers may comprise from about 90-100% by weight chemically cross-linked cellulose fibers.

The distribution layer 54 may be a material having a water retention value of from 25 to 60 or from 30 to 45, measured as indicated in the procedure disclosed in U.S. Pat. No. 5,137,537.

The distribution layer may typically have an average basis weight of from 30 to 400 g/m²or from 100 to 300 g/m², specifically reciting all 1.0 g/m²increments within the above-specified ranges and any ranges formed therein or thereby. The density of the distribution layer may vary depending on the compression of the article, but may be between 0.03 to 0.15 g/cm³or 0.08 to 0.10 g/cm³, specifically reciting all 1.0 g/cm³increments within the above-specified ranges and any ranges formed therein or thereby, measured at 0.30 psi (2.07 kPa).

Acquisition Layer

The ADS may comprise an acquisition layer 52. The acquisition layer may be disposed between the distribution layer 54 and the topsheet 24. The acquisition layer 52 may be or may comprise a non-woven material, such as an SMS or SMMS material, comprising a spunbonded, a melt-blown and a further spunbonded layer or alternatively a carded chemical-bonded nonwoven. The nonwoven material may be latex bonded. Example upper acquisition layers 52 are disclosed in U.S. Pat. No. 7,786,341. Carded, resin-bonded nonwovens may be used, in particular where the fibers used are solid round or round hollow PET staple fibers (50/50 or 40/60 mix of 6 denier and 9 denier fibers). An example binder is a butadiene/styrene latex. Nonwovens have the advantage that they can be manufactured outside the converting line and stored and used as a roll of material.

The acquisition layer 52 may be stabilized by a latex binder, for example a styrene-butadiene latex binder (SB latex).

A further acquisition layer may be used in addition to a first acquisition layer described above. For example, a tissue layer may be placed between the first acquisition layer and the distribution layer. The tissue may have enhanced capillarity distribution properties compared to the acquisition layer described above. The tissue and the first acquisition layer may be of the same size or may be of a different size. For example, the tissue layer may extend further in the rear of the absorbent article than the first acquisition layer. An example of hydrophilic tissue is a 13-15 gsm high wet strength made of cellulose fibers from supplier Havix.

Fastening System

The absorbent article may include a fastening system. The fastening system may be used to provide lateral tensions about the circumference of the absorbent article to hold the absorbent article on the wearer as is typical for taped diapers. This fastening system may not be necessary for training pant articles since the waist region of these articles is already bonded. The fastening system may comprise a fastener such as tape tabs, hook and loop fastening components, interlocking fasteners such as tabs & slots, buckles, buttons, snaps, and/or hermaphroditic fastening components, although any other suitable fastening mechanisms are also within the scope of the present disclosure. A landing zone 44 is normally provided on the garment-facing surface of the front waist region 5 for the fastener to be releasably attached thereto. Some example surface fastening systems are disclosed in U.S. Pat. No. 3,848,594, U.S. Pat. No. 4,662,875, U.S. Pat. No. 4,846,815, U.S. Pat. No. 4,894,060, U.S. Pat. No. 4,946,527, U.S. Pat. No. 5,151,092, and U.S. Pat. No. 5,221,274. An example interlocking fastening system is disclosed in U.S. Pat. No. 6,432,098. The fastening system may also provide a mechanism for holding the article in a disposal configuration as disclosed in U.S. Pat. No. 4,963,140 issued to Robertson et al.

The fastening system may also include primary and secondary fastening systems, as disclosed in U.S. Pat. No. 4,699,622 to reduce shifting of overlapped portions or to improve fit as disclosed in U.S. Pat. No. 5,242,436, U.S. Pat. No. 5,499,978, U.S. Pat. No. 5,507,736, and U.S. Pat. No. 5,591,152.

Front and Rear Ears

In an embodiment, the absorbent article may comprise front ears 46 and rear ears 40. The ears may be an integral part of the chassis, such as formed from the topsheet 24 and/or backsheet 26 as side panel. Alternatively, as represented on FIG. 1, the ears may be separate elements attached by gluing, heat embossing, and/or pressure bonding. The rear ears 40 may be stretchable to facilitate the attachment of the tabs 42 to the landing zone 44 and maintain the taped diapers in place around the wearer's waist. The rear ears 40 may also be elastic or extensible to provide a more comfortable and contouring fit by initially conformably fitting the absorbent article to the wearer and sustaining this fit throughout the time of wear well past when absorbent article has been loaded with exudates since the elasticized ears allow the sides of the absorbent article to expand and contract.

Elastic Waist Feature

The absorbent article may also comprise at least one elastic waist feature (not represented) that helps to provide improved fit and containment. The elastic waist feature is generally intended to elastically expand and contract to dynamically fit the wearer's waist. The elastic waist feature may extend at least longitudinally outwardly from at least one waist edge of the absorbent core 28 and generally forms at least a portion of the end edge of the absorbent article. Disposable diapers may be constructed so as to have two elastic waist features, one positioned in the front waist region and one positioned in the rear waist region. The elastic waist feature may be constructed in a number of different configurations including those described in U.S. Pat. No. 4,515,595, U.S. Pat. No. 4,710,189, U.S. Pat. No. 5,151,092, and U.S. Pat. No. 5,221,274.

Relations Between the Layers

Typically, adjacent layers and components may be joined together using conventional bonding methods, such as adhesive coating via slot coating or spraying on the whole or part of the surface of the layer, thermo-bonding, pressure bonding, or combinations thereof. This bonding is not represented in the Figures (except for the bonding between the raised element of the leg cuffs 65 with the topsheet 24) for clarity and readability, but bonding between the layers of the article should be considered to be present unless specifically excluded. Adhesives may be used to improve the adhesion of the different layers between the backsheet 25 and the core wrap. The glue may be any suitable hotmelt glue known in the art.

If an acquisition layer 52 is present, it may be desired that this acquisition layer is larger than or least as large as the distribution layer 54 in the longitudinal and/or transversal dimension. Thus, the distribution layer 52 may be deposited on the acquisition layer. This simplifies handling, in particular if the acquisition layer is a nonwoven which may be unrolled from a roll of stock material. The distribution layer may also be deposited directly on the absorbent core's upper side of the core wrap or another layer of the article. Also, having an acquisition layer 52 that is larger than the distribution layer allows for direct gluing of the acquisition layer to the storage core (at the larger areas). This may provide increased patch integrity and better liquid communication.

The absorbent core and in particular its absorbent material deposition area 8 may be at least as large and long and at least partially larger and/or longer than the acquisition-distribution system (ADS). This is because the absorbent material in the core may more effectively retain fluid and provide dryness benefits across a larger area than the ADS. The absorbent article may have a rectangular SAP layer and a non-rectangular (shaped) ADS. The absorbent article may also have a rectangular (non-shaped) ADS and a rectangular layer of SAP.

Sanitary Napkin Features

In an embodiment, referring to FIG. 22, the absorbent article may be a sanitary napkin 3010. The sanitary napkin 3010 may comprise a liquid permeable topsheet 3014, a liquid impermeable, or substantially liquid impermeable, backsheet 3016, and an absorbent core 3018. The absorbent core 3018 may have any or all of the features described herein with respect to the absorbent cores 28 and, in some embodiments, may have a secondary topsheet instead of the acquisition-distribution system disclosed above. The sanitary napkin 3010 may also comprise wings 3020 extending outwardly with respect to a longitudinal axis 3080 of the sanitary napkin 3010. The sanitary napkin 3010 may also comprise a lateral axis 3090. The wings 3020 may be joined to the topsheet 3014, the backsheet 3016, and/or the absorbent core 3018. The sanitary napkin 3010 may also comprise a front edge 3022, a rear edge 3024 longitudinally opposing the front edge 3022, a first side edge 3026, and a second side edge 3028 longitudinally opposing the first side edge 3026. The longitudinal axis 3080 may extend from a midpoint of the front edge 3022 to a midpoint of the rear edge 3024. The lateral axis 3090 may extend from a midpoint of the first side edge 3028 to a midpoint of the second side edge 3028. The sanitary napkin 3010 may also be provided with additional features commonly found in sanitary napkins as is known in the art.

Method of Making the Article

The absorbent articles and sanitary napkins of the present disclosure may be made by any suitable methods known in the art. In particular, the articles may be hand-made or industrially produced at high speed.

The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as “40 mm” is intended to mean “about 40 mm.”

Every document cited herein, including any cross referenced or related patent or application, is hereby incorporated herein by reference in its entirety unless expressly excluded or otherwise limited. The citation of any document is not an admission that it is prior art with respect to any embodiment disclosed or claimed herein or that it alone, or in any combination with any other reference or references, teaches, suggests or discloses any such embodiment. Further, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall govern.

While particular embodiments of the present disclosure have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications may be made without departing from the spirit and scope of the present disclosure. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this disclosure.

Claims

1. An absorbent article comprising: a front waist edge;a rear waist edge longitudinally opposing the front waist edge;a first side edge;a second side edge laterally opposing the first side edge;a longitudinal axis extending from a midpoint of the front waist edge to a midpoint of the rear waist edge;a lateral axis extending from a midpoint of the first side edge to a midpoint of the second side edge;a liquid permeable topsheet;a liquid impermeable backsheet;a pair of barrier leg cuffs extending at least partially between the front waist edge and the rear waist edge on opposite sides of the longitudinal axis, wherein each barrier leg cuff comprises: a proximal edge joined to the topsheet or the backsheet; anda free terminal edge; andan absorbent core disposed at least partially intermediate the topsheet and the backsheet and comprising a core wrap enclosing an absorbent material, wherein the core wrap comprises a first nonwoven and a second nonwoven, wherein the first nonwoven forms a C-wrap at least partially around the second nonwoven, wherein the absorbent material comprises at least 80% of superabsorbent polymers by weight of the absorbent material, wherein the absorbent core comprises a channel substantially free of the superabsorbent polymers, at least partially oriented in the longitudinal direction of the article, and comprising an arcuate portion, wherein the first nonwoven is in contact with the second nonwoven in at least a portion of the channel, wherein the channel has lateral widths taken parallel to the lateral axis, and wherein a profile of the lateral widths of the channel over a longitudinal length of at least 50 mm of the channel taken along the longitudinal axis is substantially constant.
2. The absorbent article of claim 1, wherein the substantially constant lateral width is in the range of about 5 mm to about 10 mm.
3. The absorbent article of claim 1, wherein the absorbent core comprises a second channel substantially free of the superabsorbent polymers and at least partially oriented in the longitudinal direction of the article, wherein the second channel has lateral widths taken parallel to the lateral axis, and wherein the second channel is positioned on an opposite side of the longitudinal axis as the channel.
4. The absorbent article of claim 3, wherein a profile of the lateral widths of the second channel over the longitudinal length is substantially constant.
5. The absorbent article of claim 3, wherein the lateral widths of the second channel vary over the longitudinal length.
6. The absorbent article of claim 3, wherein the channel and the second channel have the same longitudinal length within the absorbent article.
7. The absorbent article of claim 3, wherein the lateral widths of the channel and the second channel are substantially the same at a point along the channel and the second channel.
8. The absorbent article of claim 1, wherein the absorbent core comprises at least three channels substantially free of the superabsorbent polymers and at least partially oriented in the longitudinal direction, wherein the longitudinal length of two of the channels is substantially the same, and wherein the longitudinal length of the other channel is different.
9. The absorbent article of claim 8, wherein the average lateral width over the longitudinal length of the third channel is different than the average lateral width over the longitudinal length of the channel or the second channel.
10. An absorbent article comprising: a front waist edge;a rear waist edge longitudinally opposing the front waist edge;a first side edge;a second side edge laterally opposing the first side edge;a longitudinal axis extending from a midpoint of the front waist edge to a midpoint of the rear waist edge;a lateral axis extending from a midpoint of the first side edge to a midpoint of the second side edge;a liquid permeable topsheet;a liquid impermeable backsheet;a pair of barrier leg cuffs extending at least partially between the front waist edge and the rear waist edge on opposite sides of the longitudinal axis, wherein each barrier leg cuff comprises: a proximal edge joined to the topsheet or the backsheet; anda free terminal edge; andan absorbent core disposed at least partially intermediate the topsheet and the backsheet and comprising a core wrap enclosing an absorbent material, wherein the core wrap comprises a first material and a second material, wherein the first material forms a C-wrap at least partially around the second material, wherein the absorbent material comprises at least 80% of superabsorbent polymers by weight of the absorbent material, wherein the absorbent core comprises three channels substantially free of the superabsorbent polymers, wherein at least two of the three channels are at least partially oriented in the longitudinal direction of the article, wherein the channels each have lateral widths taken parallel to the lateral axis, wherein a profile of the sum of the lateral widths of the channels over a longitudinal length of at least 20 mm taken along the longitudinal axis has two maximum peaks, and wherein the maximum peaks are separated from each other by at least 3 mm of the longitudinal length.
11. The absorbent article of claim 10, wherein a profile of the sum of the lateral widths of the channels over the longitudinal length on a first side of the lateral axis is different than a profile of the sum of the lateral widths of the channels over the longitudinal length on a second side of the lateral axis.
12. The absorbent article of claim 10, comprising an acquisition-distribution system comprising one or more layers, and wherein the acquisition-distribution system is at least partially positioned intermediate the absorbent core and the topsheet.
13. The absorbent article of claim 12, wherein the acquisition-distribution system comprises two layers, and wherein one layer comprises at least 50% by weight of cross-linked cellulose fibers.
14. The absorbent article of claim 10, wherein the absorbent core comprises: a first absorbent layer comprising the first material and a first layer of the superabsorbent polymers;a second absorbent layer comprising the second material and a second layer of the superabsorbent polymers; anda fibrous thermoplastic adhesive material at least partially bonding the layers ofthe superabsorbent polymers to their respective materials.
15. The absorbent core of claim 10, wherein the absorbent material comprises at least 95% by weight of the superabsorbent polymers by total weight of the absorbent material.
16. The absorbent article of claim 10, wherein the absorbent material of the absorbent core comprises less than 5% weight percent of natural or synthetic fibers.
17. The absorbent article of claim 10, wherein the first material and the second material are bonded to each other through a portion of one of the channels.
18. An absorbent article comprising: a front waist edge;a rear waist edge longitudinally opposing the front waist edge;a first side edge;a second side edge laterally opposing the first side edge;a longitudinal axis extending from a midpoint of the front waist edge to a midpoint of the rear waist edge;a lateral axis extending from a midpoint of the first side edge to a midpoint of the second side edge;a liquid permeable topsheet;a liquid impermeable backsheet;a pair of barrier leg cuffs extending at least partially between the front waist edge and the rear waist edge on opposite sides of the longitudinal axis, wherein each barrier leg cuff comprises: a proximal edge joined to the topsheet or the backsheet; anda free terminal edge; andan absorbent core disposed at least partially intermediate the topsheet and the backsheet and comprising a core wrap enclosing an absorbent material, wherein the core wrap comprises a first nonwoven and a second nonwoven, wherein the first nonwoven forms a C-wrap at least partially around the second nonwoven, wherein the absorbent material comprises at least 90% of superabsorbent polymers by weight of the absorbent material, wherein the absorbent core comprises three channels substantially free of the superabsorbent polymers, wherein at least two of the three channels are at least partially oriented in the longitudinal direction of the article, wherein the channels each have lateral widths taken parallel to the lateral axis, wherein a profile of the sum of the lateral widths of the channels over a longitudinal length of at least 20 mm taken along the longitudinal axis is bimodal and has a portion between the two modes where the sum of the lateral widths of the three channels is zero.
19. The absorbent article of claim 18, wherein the first nonwoven and the second nonwoven are bonded to each other through a portion of one of the channels.
20. The absorbent article of claim 18, wherein the absorbent core comprises: a first absorbent layer comprising the first nonwoven and a first layer of the superabsorbent polymers;a second absorbent layer comprising the second nonwoven and a second layer of the superabsorbent polymers; anda fibrous thermoplastic adhesive material at least partially bonding the layers of the superabsorbent polymers to their respective nonwovens.
21. A sanitary napkin comprising: a front edge;a rear edge longitudinally opposing the front edge;a first side edge;a second side edge laterally opposing the first side edge;a longitudinal axis extending from a midpoint of the front edge to a midpoint of the rear edge;a lateral axis extending from a midpoint of the first side edge to a midpoint of the second side edge;a liquid permeable topsheet;a liquid impermeable backsheet; andan absorbent core disposed at least partially intermediate the topsheet and the backsheet and comprising a core wrap enclosing an absorbent material, wherein the core wrap comprises a first material and a second material, wherein the first material forms a C-wrap at least partially around the second material, wherein the absorbent material comprises at least 80% of superabsorbent polymers by weight of the absorbent material, wherein the absorbent core comprises a channel substantially free of the superabsorbent polymers, at least partially oriented in the longitudinal direction of the sanitary napkin, and comprising an arcuate portion, wherein the first material and the second material are bonded to each other through a portion of the channel, wherein the channel has lateral widths taken parallel to the lateral axis, and wherein a profile of the lateral widths of the channel over a longitudinal length of at least 15 mm of the channel taken along the longitudinal axis is substantially constant.
22. The absorbent article of claim 21, wherein the absorbent core comprises: a first absorbent layer comprising the first material and a first layer of the superabsorbent polymers; anda second absorbent layer comprising the second material and a second layer of the superabsorbent polymers.
23. The absorbent core of claim 21, wherein the absorbent material comprises at least 95% by weight of the superabsorbent polymers by total weight of the absorbent material.
24. The absorbent article of claim 21, wherein the absorbent material of the absorbent core comprises less than 5% weight percent of natural or synthetic fibers.
25. A sanitary napkin comprising: a front edge;a rear edge longitudinally opposing the front edge;a first side edge;a second side edge laterally opposing the first side edge;a longitudinal axis extending from a midpoint of the front edge to a midpoint of the rear edge;a lateral axis extending from a midpoint of the first side edge to a midpoint of the second side edge;a liquid permeable topsheet;a liquid impermeable backsheet; andan absorbent core disposed at least partially intermediate the topsheet and the backsheet and comprising a core wrap enclosing an absorbent material, wherein the core wrap comprises a first material and a second material, wherein the first material forms a C-wrap at least partially around the second material, wherein the absorbent material comprises at least 80% of superabsorbent polymers by weight of the absorbent material, wherein the absorbent core further comprises: a first absorbent layer comprising the first material and a first layer of the superabsorbent polymers;a second absorbent layer comprising the second material and a second layer of the superabsorbent polymers; anda channel substantially free of the superabsorbent polymers, at least partially oriented in the longitudinal direction of the sanitary napkin, and comprising an arcuate portion, wherein the channel has lateral widths taken parallel to the lateral axis, and wherein a profile of the lateral widths of the channel over a longitudinal length of at least 15 mm of the channel taken along the longitudinal axis is substantially constant.
26. The absorbent article of claim 25, wherein the first material and the second material are bonded to each other through a portion of the channel.
27. The absorbent core of claim 25, wherein the absorbent material comprises at least 95% by weight of the superabsorbent polymers by total weight of the absorbent material.
28. The absorbent article of claim 25, wherein the absorbent material of the absorbent core comprises less than 5% weight percent of natural or synthetic fibers.

US Referenced Citations (970)

Number	Name	Date	Kind
1733997	Marr	Oct 1929	A
1734499	Marinsky	Nov 1929	A
1989283	Limacher	Jan 1935	A
2058509	Rose	Oct 1936	A
2271676	Bjornbak	Feb 1942	A
2450789	Frieman	Oct 1948	A
2508811	Best et al.	May 1950	A
2568910	Condylis	Sep 1951	A
2570796	Gross	Oct 1951	A
2570963	Mesmer	Oct 1951	A
2583553	Faure	Jan 1952	A
2705957	Mauro	Apr 1955	A
2788003	Morin	Apr 1957	A
2788786	Dexter	Apr 1957	A
2798489	Behrman	Jul 1957	A
2807263	Newton	Sep 1957	A
2830589	Doner	Apr 1958	A
2890700	Lönberg-Holm	Jun 1959	A
2890701	Weinman	Jun 1959	A
2898912	Adams	Aug 1959	A
2931361	Sostsrin	Apr 1960	A
2977957	Clyne	Apr 1961	A
3071138	Gustavo	Jan 1963	A
3180335	Duncan et al.	Apr 1965	A
3207158	Yoshitake et al.	Sep 1965	A
3386442	Sabee	Jun 1968	A
3561446	Jones	Feb 1971	A
3572342	Lindquist et al.	Mar 1971	A
3572432	Burton	Mar 1971	A
3575174	Mogor	Apr 1971	A
3578155	Small et al.	May 1971	A
3606887	Roeder	Sep 1971	A
3610244	Jones	Oct 1971	A
3618608	Brink	Nov 1971	A
3642001	Sabee	Feb 1972	A
3653381	Warnken	Apr 1972	A
3670731	Harmon	Jun 1972	A
3688767	Goldstein	Sep 1972	A
3710797	Marsan	Jan 1973	A
3731688	Litt et al.	May 1973	A
3756878	Willot	Sep 1973	A
3774241	Zerkle	Nov 1973	A
3776233	Schaar	Dec 1973	A
3814100	Nystrand et al.	Jun 1974	A
3828784	Zoephel	Aug 1974	A
3840418	Sabee	Oct 1974	A
3847702	Jones	Nov 1974	A
3848594	Buell	Nov 1974	A
3848595	Endres	Nov 1974	A
3848597	Endres	Nov 1974	A
3860003	Buell	Jan 1975	A
3863637	MacDonald et al.	Feb 1975	A
3882870	Hathaway	May 1975	A
3884234	Taylor	May 1975	A
3900032	Heurlen	Aug 1975	A
3911173	Sprague, Jr.	Oct 1975	A
3920017	Karami	Nov 1975	A
3924626	Lee et al.	Dec 1975	A
3926189	Taylor	Dec 1975	A
3929134	Karami	Dec 1975	A
3929135	Thompson	Dec 1975	A
3930501	Schaar	Jan 1976	A
3938523	Gilliland et al.	Feb 1976	A
3968799	Schrading	Jul 1976	A
3978861	Schaar	Sep 1976	A
3981306	Krusko	Sep 1976	A
3987794	Schaar	Oct 1976	A
3995637	Schaar	Dec 1976	A
3995640	Schaar	Dec 1976	A
3999547	Hernandez	Dec 1976	A
4014338	Schaar	Mar 1977	A
4034760	Amirsakis	Jul 1977	A
4055180	Karami	Oct 1977	A
4074508	Reid	Feb 1978	A
4084592	Tritsch	Apr 1978	A
4100922	Hernandez	Jul 1978	A
4232674	Melican	Nov 1980	A
4257418	Hessner	Mar 1981	A
4259220	Bunnelle et al.	Mar 1981	A
4296750	Woon et al.	Oct 1981	A
4315508	Bolick	Feb 1982	A
4324246	Mullane et al.	Apr 1982	A
4340706	Obayashi et al.	Jul 1982	A
4341216	Obenour	Jul 1982	A
4342314	Radel et al.	Aug 1982	A
4381783	Elias	May 1983	A
4388075	Mesek et al.	Jun 1983	A
4461621	Karami et al.	Jul 1984	A
4463045	Ahr et al.	Jul 1984	A
4469710	Rielley et al.	Sep 1984	A
4475912	Coates	Oct 1984	A
4490148	Beckeström	Dec 1984	A
4507438	Obayashi et al.	Mar 1985	A
4515595	Kievit et al.	May 1985	A
4527990	Sigl	Jul 1985	A
4541871	Obayashi et al.	Sep 1985	A
4573986	Minetola et al.	Mar 1986	A
4578072	Lancaster	Mar 1986	A
4578702	Campbell	Mar 1986	A
4585448	Enloe	Apr 1986	A
4585450	Rosch et al.	Apr 1986	A
4589878	Mitrani	May 1986	A
4596568	Flug	Jun 1986	A
4601717	Blevins	Jul 1986	A
4606964	Wideman	Aug 1986	A
4609518	Curro et al.	Sep 1986	A
4610678	Weisman et al.	Sep 1986	A
4623342	Ito et al.	Nov 1986	A
4624666	Derossett	Nov 1986	A
4629643	Curro et al.	Dec 1986	A
4636207	Buell	Jan 1987	A
4641381	Heran et al.	Feb 1987	A
4662875	Hirotsu et al.	May 1987	A
4666983	Tsubakimoto et al.	May 1987	A
4670011	Mesek	Jun 1987	A
4670012	Johnson	Jun 1987	A
4680030	Coates et al.	Jul 1987	A
4681579	Toussant et al.	Jul 1987	A
4681581	Coates	Jul 1987	A
4681793	Linman et al.	Jul 1987	A
4690680	Higgins	Sep 1987	A
4695278	Lawson	Sep 1987	A
4699622	Toussant et al.	Oct 1987	A
4704115	Buell	Nov 1987	A
4704116	Enloe	Nov 1987	A
4710189	Lash	Dec 1987	A
4731066	Korpman	Mar 1988	A
4731070	Koci	Mar 1988	A
RE32649	Brandt et al.	Apr 1988	E
4747846	Boland et al.	May 1988	A
4773905	Molee	Sep 1988	A
4784892	Storey et al.	Nov 1988	A
4785996	Ziecker et al.	Nov 1988	A
4787896	Houghton et al.	Nov 1988	A
4795454	Dragoo	Jan 1989	A
4802884	Fröidh et al.	Feb 1989	A
4808176	Kielpikowski	Feb 1989	A
4808178	Aziz	Feb 1989	A
4834735	Alemany et al.	May 1989	A
4834740	Suzuki et al.	May 1989	A
4834742	Wilson et al.	May 1989	A
4838886	Kent	Jun 1989	A
4842666	Werenicz	Jun 1989	A
4846815	Scripps	Jul 1989	A
4846825	Enloe et al.	Jul 1989	A
4848815	Molloy	Jul 1989	A
4861652	Lippert et al.	Aug 1989	A
4869724	Scripps	Sep 1989	A
4886697	Perdelwitz, Jr. et al.	Dec 1989	A
4888231	Angstadt	Dec 1989	A
4892528	Suzuki et al.	Jan 1990	A
4892535	Bjornberg	Jan 1990	A
4892536	DesMarais et al.	Jan 1990	A
4894060	Nestegard	Jan 1990	A
4894277	Akasaki	Jan 1990	A
4900317	Buell	Feb 1990	A
4904251	Igaue et al.	Feb 1990	A
4909802	Ahr et al.	Mar 1990	A
4909803	Aziz et al.	Mar 1990	A
4936839	Molee	Jun 1990	A
4940463	Leathers et al.	Jul 1990	A
4940464	Van Gompel et al.	Jul 1990	A
4946527	Battrell	Aug 1990	A
4950264	Osborn	Aug 1990	A
4960477	Mesek	Oct 1990	A
4963140	Robertson et al.	Oct 1990	A
4968313	Sabee	Nov 1990	A
4990147	Freeland	Feb 1991	A
4994053	Lang	Feb 1991	A
5006394	Baird	Apr 1991	A
5019063	Marsan et al.	May 1991	A
5019072	Polski	May 1991	A
5021051	Hiuke	Jun 1991	A
5032120	Freeland et al.	Jul 1991	A
5034008	Breitkopf	Jul 1991	A
5037416	Allen et al.	Aug 1991	A
5071414	Elliott	Dec 1991	A
5072687	Mitchell	Dec 1991	A
5085654	Buell	Feb 1992	A
5087255	Sims et al.	Feb 1992	A
5092861	Nomura et al.	Mar 1992	A
5102597	Roe et al.	Apr 1992	A
5114420	Igaue et al.	May 1992	A
5124188	Roe et al.	Jun 1992	A
5135522	Fahrenkrug et al.	Aug 1992	A
5137537	Herron et al.	Aug 1992	A
D329697	Fahrenkrug et al.	Sep 1992	S
5143679	Weber et al.	Sep 1992	A
5147343	Kellenberger	Sep 1992	A
5147345	Young et al.	Sep 1992	A
5149334	Roe et al.	Sep 1992	A
5151091	Glaug	Sep 1992	A
5151092	Buell et al.	Sep 1992	A
5156793	Buell et al.	Oct 1992	A
5167653	Igaue et al.	Dec 1992	A
5167897	Weber et al.	Dec 1992	A
5175046	Nguyen	Dec 1992	A
5180622	Berg et al.	Jan 1993	A
5190563	Herron et al.	Mar 1993	A
5190606	Merkatoris et al.	Mar 1993	A
5204997	Suzuki et al.	Apr 1993	A
5221274	Buell et al.	Jun 1993	A
5235515	Ungpiyakul et al.	Aug 1993	A
5242436	Weil et al.	Sep 1993	A
5246431	Minetola et al.	Sep 1993	A
5246432	Suzuki et al.	Sep 1993	A
5246433	Hasse et al.	Sep 1993	A
5248309	Serbiak et al.	Sep 1993	A
5260345	Desmarais et al.	Nov 1993	A
5269775	Freeland et al.	Dec 1993	A
5281683	Yano et al.	Jan 1994	A
H1298	Ahr	Apr 1994	H
5300565	Berg et al.	Apr 1994	A
5312386	Correa et al.	May 1994	A
5331059	Engelhardt et al.	Jul 1994	A
5336552	Strack et al.	Aug 1994	A
5348547	Payne et al.	Sep 1994	A
5358500	LaVon et al.	Oct 1994	A
5366782	Curro et al.	Nov 1994	A
5387207	Dyer et al.	Feb 1995	A
5387209	Yamamoto et al.	Feb 1995	A
5389095	Suzuki	Feb 1995	A
5397316	LaVon et al.	Mar 1995	A
5399175	Glaug	Mar 1995	A
5401792	Babu et al.	Mar 1995	A
5409771	Dahmen et al.	Apr 1995	A
H1440	New et al.	May 1995	H
5411497	Tanzer	May 1995	A
5415644	Enloe	May 1995	A
5425725	Tanzer	Jun 1995	A
5433715	Tanzer	Jul 1995	A
5451219	Suzuki	Sep 1995	A
5451442	Pieniak	Sep 1995	A
5460622	Dragoo et al.	Oct 1995	A
5462541	Bruemmer	Oct 1995	A
5476458	Glaug et al.	Dec 1995	A
5486166	Bishop et al.	Jan 1996	A
5490846	Ellis et al.	Feb 1996	A
5492962	Lahrman et al.	Feb 1996	A
5499978	Buell et al.	Mar 1996	A
5507736	Clear et al.	Apr 1996	A
5507895	Suekane	Apr 1996	A
5509915	Hanson et al.	Apr 1996	A
5514104	Cole	May 1996	A
5518801	Chappell et al.	May 1996	A
5520674	Lavon et al.	May 1996	A
5522810	Allen, Jr.	Jun 1996	A
5527300	Sauer	Jun 1996	A
5531730	Dreier	Jul 1996	A
5532323	Yano et al.	Jul 1996	A
5542943	Sageser	Aug 1996	A
5549592	Fries et al.	Aug 1996	A
5549593	Ygge et al.	Aug 1996	A
5549791	Herron et al.	Aug 1996	A
5554145	Roe et al.	Sep 1996	A
5560878	Dragoo et al.	Oct 1996	A
5562634	Flumene et al.	Oct 1996	A
5562646	Goldman et al.	Oct 1996	A
5569234	Buell et al.	Oct 1996	A
5571096	Dobrin et al.	Nov 1996	A
5574121	Irie et al.	Nov 1996	A
5580411	Nease et al.	Dec 1996	A
5584829	Lavash et al.	Dec 1996	A
5591152	Buell et al.	Jan 1997	A
5591155	Nishikawa et al.	Jan 1997	A
5593399	Tanzer	Jan 1997	A
5599335	Goldman et al.	Feb 1997	A
5601542	Melius et al.	Feb 1997	A
5607414	Richards et al.	Mar 1997	A
5607416	Yamamoto et al.	Mar 1997	A
5607537	Johnson et al.	Mar 1997	A
5607760	Roe	Mar 1997	A
5609587	Roe	Mar 1997	A
5609588	DiPalma et al.	Mar 1997	A
5611879	Morman	Mar 1997	A
5613959	Roessler et al.	Mar 1997	A
5613960	Mizutani	Mar 1997	A
5614283	Potnis et al.	Mar 1997	A
5622589	Johnson et al.	Apr 1997	A
5624423	Anjur	Apr 1997	A
5624424	Saisaka et al.	Apr 1997	A
5625222	Yoneda et al.	Apr 1997	A
5626571	Young et al.	May 1997	A
5628741	Buell et al.	May 1997	A
5635191	Roe et al.	Jun 1997	A
5635271	Zafiroglu	Jun 1997	A
5637106	Mitchell	Jun 1997	A
5643238	Baker	Jul 1997	A
5643243	Klemp	Jul 1997	A
5643588	Roe et al.	Jul 1997	A
5649914	Glaug	Jul 1997	A
5650214	Anderson et al.	Jul 1997	A
H1674	Ames et al.	Aug 1997	H
5658268	Johns et al.	Aug 1997	A
5662634	Yamamoto	Sep 1997	A
5662638	Johnson et al.	Sep 1997	A
5674215	Ronnberg	Oct 1997	A
5683374	Yamamoto	Nov 1997	A
5685874	Buell et al.	Nov 1997	A
5690627	Clear et al.	Nov 1997	A
5691035	Chappell et al.	Nov 1997	A
5691036	Lin et al.	Nov 1997	A
5695488	Sosalla	Dec 1997	A
5700254	McDowall et al.	Dec 1997	A
5702376	Glaug	Dec 1997	A
5714156	Schmidt et al.	Feb 1998	A
5723087	Chappell et al.	Mar 1998	A
5733275	Davis et al.	Mar 1998	A
5749866	Roe et al.	May 1998	A
5752947	Awolin	May 1998	A
5756039	Mcfall et al.	May 1998	A
H1732	Johnson	Jun 1998	H
5762641	BewickSonntag et al.	Jun 1998	A
5766388	Pelley	Jun 1998	A
5766389	Brandon et al.	Jun 1998	A
5772825	Schmitz	Jun 1998	A
5776121	Roe et al.	Jul 1998	A
5779831	Schmitz	Jul 1998	A
5788684	Abuto et al.	Aug 1998	A
5795345	Mizutani	Aug 1998	A
5797892	Glaug	Aug 1998	A
5797894	Cadieux et al.	Aug 1998	A
5807365	Luceri	Sep 1998	A
5810796	Kimura	Sep 1998	A
5810800	Hunter et al.	Sep 1998	A
5814035	Gryskiewicz et al.	Sep 1998	A
5820618	Roberts et al.	Oct 1998	A
5827257	Fujioka	Oct 1998	A
5830202	Bogdanski et al.	Nov 1998	A
5833678	Ashton et al.	Nov 1998	A
5837789	Stockhausen et al.	Nov 1998	A
5843059	Niemeyer	Dec 1998	A
5846231	Fujioka	Dec 1998	A
5846232	Serbiak et al.	Dec 1998	A
5849816	Suskind et al.	Dec 1998	A
5851204	Mitzutani	Dec 1998	A
5855572	Schmidt	Jan 1999	A
5858013	Kling	Jan 1999	A
5865823	Curro	Feb 1999	A
5865824	Chen	Feb 1999	A
5873868	Nakahata	Feb 1999	A
5876391	Roe et al.	Mar 1999	A
5891118	Toyoshima	Apr 1999	A
5891544	Chappell et al.	Apr 1999	A
5897545	Kline et al.	Apr 1999	A
5904673	Roe et al.	May 1999	A
5928184	Etheredge	Jul 1999	A
5931825	Kuen et al.	Aug 1999	A
5938648	Lavon et al.	Aug 1999	A
5938650	Baer et al.	Aug 1999	A
5941862	Haynes et al.	Aug 1999	A
5944706	Palumbo et al.	Aug 1999	A
5947949	Inoue et al.	Sep 1999	A
5951536	Osborn, III et al.	Sep 1999	A
5957908	Kline et al.	Sep 1999	A
5968025	Roe et al.	Oct 1999	A
5968029	Chappell et al.	Oct 1999	A
5980500	Shimizu et al.	Nov 1999	A
5981824	Luceri	Nov 1999	A
5989236	Roe et al.	Nov 1999	A
6004306	Robles et al.	Dec 1999	A
6022430	Blenke et al.	Feb 2000	A
6022431	Blenke et al.	Feb 2000	A
6042673	Johnson et al.	Mar 2000	A
6050984	Fujioka	Apr 2000	A
6054631	Gent	Apr 2000	A
6060115	Borowski et al.	May 2000	A
6068620	Chmielewski	May 2000	A
6080909	Osterdahl et al.	Jun 2000	A
6083210	Young et al.	Jul 2000	A
6090994	Chen	Jul 2000	A
6091336	Zand	Jul 2000	A
6099515	Sugito	Aug 2000	A
6102892	Putzer et al.	Aug 2000	A
6103814	Van Drongelen et al.	Aug 2000	A
6107537	Elder et al.	Aug 2000	A
6110157	Schmidt	Aug 2000	A
6117121	Faulks et al.	Sep 2000	A
6117803	Morman et al.	Sep 2000	A
6120486	Toyoda et al.	Sep 2000	A
6120487	Ashton	Sep 2000	A
6120489	Johnson et al.	Sep 2000	A
6120866	Arakawa et al.	Sep 2000	A
6121509	Ashraf et al.	Sep 2000	A
6129717	Fujioka et al.	Oct 2000	A
6129720	Blenke et al.	Oct 2000	A
6132411	Huber et al.	Oct 2000	A
6139912	Onuschak	Oct 2000	A
6143821	Houben	Nov 2000	A
6152908	Widlund	Nov 2000	A
6156023	Yoshioka	Dec 2000	A
6156424	Taylor	Dec 2000	A
6160197	Lassen	Dec 2000	A
6165160	Suzuki et al.	Dec 2000	A
6174302	Kumasaka	Jan 2001	B1
6177606	Etheredge	Jan 2001	B1
6177607	Blaney et al.	Jan 2001	B1
6186996	Martin	Feb 2001	B1
6210386	Inoue	Apr 2001	B1
6210390	Karlsson	Apr 2001	B1
6231556	Osborn, III	May 2001	B1
6231566	Lai	May 2001	B1
6238380	Sasaki	May 2001	B1
6241716	Rönnberg	Jun 2001	B1
6254294	Muhar	Jul 2001	B1
6258996	Goldman	Jul 2001	B1
6265488	Fujino et al.	Jul 2001	B1
6306122	Narawa et al.	Oct 2001	B1
6315765	Datta	Nov 2001	B1
6322552	Blenke et al.	Nov 2001	B1
6325787	Roe et al.	Dec 2001	B1
6326525	Hamajima	Dec 2001	B1
6334858	Rönnberg et al.	Jan 2002	B1
6336922	Van Gompel et al.	Jan 2002	B1
6340611	Shimizu	Jan 2002	B1
6342715	Shimizu	Jan 2002	B1
6350332	Thomas et al.	Feb 2002	B1
6368687	Joseph et al.	Apr 2002	B1
6371948	Mizutani	Apr 2002	B1
6372952	Lash et al.	Apr 2002	B1
6375644	Mizutani	Apr 2002	B2
6376034	Brander	Apr 2002	B1
6383431	Dobrin et al.	May 2002	B1
6383960	Everett	May 2002	B1
6394989	Mizutani	May 2002	B2
6402729	Boberg et al.	Jun 2002	B1
6402731	Suprise et al.	Jun 2002	B1
6403857	Gross et al.	Jun 2002	B1
6409883	Makolin	Jun 2002	B1
6410820	McFall et al.	Jun 2002	B1
6410822	Mizutani	Jun 2002	B1
6413248	Mizutani	Jul 2002	B1
6413249	Turi et al.	Jul 2002	B1
6414214	Engelhardt et al.	Jul 2002	B1
6419667	Avalon et al.	Jul 2002	B1
6423046	Fujioka	Jul 2002	B1
6423048	Suzuki et al.	Jul 2002	B1
6423884	Oehmen	Jul 2002	B1
6429350	Tanzer et al.	Aug 2002	B1
6432094	Fujioka et al.	Aug 2002	B1
6432098	Kline et al.	Aug 2002	B1
6432099	Rönnberg	Aug 2002	B2
6437214	Everett	Aug 2002	B1
6441268	Edwardsson	Aug 2002	B1
6443933	Suzuki et al.	Sep 2002	B1
6444064	Henry et al.	Sep 2002	B1
6447496	Mizutani	Sep 2002	B1
6458111	Onishi	Oct 2002	B1
6458877	Ahmed et al.	Oct 2002	B1
6459016	Rosenfeld et al.	Oct 2002	B1
6461342	Tanji et al.	Oct 2002	B2
6461343	Schaefer et al.	Oct 2002	B1
6472478	Funk et al.	Oct 2002	B1
6475201	Saito et al.	Nov 2002	B2
6494872	Suzuki et al.	Dec 2002	B1
6494873	Karlsson et al.	Dec 2002	B2
6500159	Carvalho	Dec 2002	B1
6503233	Chen	Jan 2003	B1
6503979	Funk et al.	Jan 2003	B1
6506186	Roessler	Jan 2003	B1
6506961	Levy	Jan 2003	B1
6515195	Lariviere	Feb 2003	B1
6517525	Berthou	Feb 2003	B1
6518479	Graef	Feb 2003	B1
6520947	Tilly et al.	Feb 2003	B1
6521811	Lassen	Feb 2003	B1
6521812	Graef	Feb 2003	B1
6524294	Hilston et al.	Feb 2003	B1
6525240	Graef	Feb 2003	B1
6528698	Mizutani et al.	Mar 2003	B2
6531025	Lender et al.	Mar 2003	B1
6531027	Lender et al.	Mar 2003	B1
6534149	Daley et al.	Mar 2003	B1
6559081	Erspamer	May 2003	B1
6559239	Riegel et al.	May 2003	B1
6562168	Schmitt et al.	May 2003	B1
6562192	Hamilton	May 2003	B1
6569137	Suzuki et al.	May 2003	B2
6573422	Rosenfeld et al.	Jun 2003	B1
6585713	LeMahieu et al.	Jul 2003	B1
6585858	Otto et al.	Jul 2003	B1
6602234	Klemp et al.	Aug 2003	B2
6605070	Ludwig et al.	Aug 2003	B2
6605172	Anderson et al.	Aug 2003	B1
6605752	Magnusson	Aug 2003	B2
6610900	Tanzer	Aug 2003	B1
6630054	Graef	Oct 2003	B1
6632209	Chmielewski	Oct 2003	B1
6632504	Gillespie et al.	Oct 2003	B1
6645569	Cramer et al.	Nov 2003	B2
6646180	Chmielewski	Nov 2003	B1
6648869	Gillies et al.	Nov 2003	B1
6648870	Itoh et al.	Nov 2003	B2
6648871	Kusibojoska et al.	Nov 2003	B2
6649807	Mizutani	Nov 2003	B2
6649810	Minato	Nov 2003	B1
6657015	Riegel et al.	Dec 2003	B1
6657102	Furuya	Dec 2003	B2
6667424	Hamilton	Dec 2003	B1
6670522	Graef	Dec 2003	B1
6673982	Chen	Jan 2004	B1
6673983	Graef	Jan 2004	B1
6673985	Mizutani	Jan 2004	B2
6682515	Mizutani et al.	Jan 2004	B1
6682516	Johnston	Jan 2004	B2
6689115	Popp et al.	Feb 2004	B1
6689934	Dodge, II	Feb 2004	B2
6695827	Chen	Feb 2004	B2
6700034	Lindsay et al.	Mar 2004	B1
6703538	Lassen	Mar 2004	B2
6705465	Ling et al.	Mar 2004	B2
6706943	Onishi	Mar 2004	B2
6710224	Chmielewski	Mar 2004	B2
6710225	Everett	Mar 2004	B1
6716204	Roe et al.	Apr 2004	B1
6716205	Popp et al.	Apr 2004	B2
6717029	Baker	Apr 2004	B2
6726668	Underhill et al.	Apr 2004	B2
6726792	Johnson et al.	Apr 2004	B1
6734335	Graef	May 2004	B1
6790798	Suzuki et al.	Sep 2004	B1
6809158	Ikeuchi et al.	Oct 2004	B2
6818083	Mcamish et al.	Nov 2004	B2
6830800	Curro et al.	Dec 2004	B2
6840929	Kurata	Jan 2005	B2
6846374	Popp	Jan 2005	B2
6858771	Yoshimasa	Feb 2005	B2
6863933	Cramer et al.	Mar 2005	B2
6863960	Curro et al.	Mar 2005	B2
6867345	Shimoe	Mar 2005	B2
6867346	Dopps	Mar 2005	B1
6878433	Curro et al.	Apr 2005	B2
6880211	Jackson et al.	Apr 2005	B2
6891080	Minato	May 2005	B2
6904865	Klofta	Jun 2005	B2
6911574	Mizutani	Jun 2005	B1
6923797	Shinohara et al.	Aug 2005	B2
6926703	Sugito	Aug 2005	B2
6929629	Drevik et al.	Aug 2005	B2
6939914	Qin	Sep 2005	B2
6946585	Brown	Sep 2005	B2
6953451	Berba	Oct 2005	B2
6955733	Henry et al.	Oct 2005	B2
6962578	Lavon	Nov 2005	B1
6962645	Graef	Nov 2005	B2
6965058	Raidel	Nov 2005	B1
6969781	Graef	Nov 2005	B2
6972010	Pesce et al.	Dec 2005	B2
6972011	Maeda	Dec 2005	B2
6979564	Glucksmann et al.	Dec 2005	B2
7001167	Venturino	Feb 2006	B2
7014632	Takino et al.	Mar 2006	B2
7015370	Watanabe	Mar 2006	B2
7037299	Turi et al.	May 2006	B2
7037571	Fish et al.	May 2006	B2
7048726	Kusagawa et al.	May 2006	B2
7056311	Kinoshita	Jun 2006	B2
7067711	Kinoshita et al.	Jun 2006	B2
7073373	La Fortune	Jul 2006	B2
7078583	Kudo	Jul 2006	B2
7090665	Ohashi	Aug 2006	B2
7108759	You	Sep 2006	B2
7108916	Ehrnsperger et al.	Sep 2006	B2
7112621	Rohrbaugh et al.	Sep 2006	B2
7122713	Komatsu	Oct 2006	B2
7125470	Graef	Oct 2006	B2
7132585	Kudo	Nov 2006	B2
7147628	Drevik	Dec 2006	B2
7150729	Shimada	Dec 2006	B2
7154019	Mishima et al.	Dec 2006	B2
7160281	Leminh et al.	Jan 2007	B2
7166190	Graef	Jan 2007	B2
7169136	Otsubo	Jan 2007	B2
7183360	Daniel et al.	Feb 2007	B2
7189888	Wang et al.	Mar 2007	B2
7196241	Kinoshita	Mar 2007	B2
7199211	Popp et al.	Apr 2007	B2
7204830	Mishima	Apr 2007	B2
7207978	Takino	Apr 2007	B2
7219403	Miyamoto et al.	May 2007	B2
7220251	Otsubo et al.	May 2007	B2
7250481	Jaworek et al.	Jul 2007	B2
7252657	Mishima	Aug 2007	B2
7265258	Hamilton	Sep 2007	B2
RE39919	Dodge, II et al.	Nov 2007	E
7311968	Ehrnsperger et al.	Dec 2007	B2
7312372	Miyama	Dec 2007	B2
7318820	LaVon et al.	Jan 2008	B2
7329244	Otsubo	Feb 2008	B2
7329246	Kinoshita	Feb 2008	B2
7335810	Yoshimasa	Feb 2008	B2
7377914	LaVon	May 2008	B2
7429689	Chen	Sep 2008	B2
7435244	Schroer et al.	Oct 2008	B2
7465373	Graef	Dec 2008	B2
7500969	Mishima	Mar 2009	B2
7504552	Tamura	Mar 2009	B2
7521109	Suzuki	Apr 2009	B2
7521587	Busam et al.	Apr 2009	B2
7537832	Carlucci et al.	May 2009	B2
7547815	Ohashi	Jun 2009	B2
7550646	Tamura	Jun 2009	B2
7563257	Nakajima	Jul 2009	B2
7588561	Kenmochi	Sep 2009	B2
7594904	Rosenfeld	Sep 2009	B2
7625363	Yoshimasa	Dec 2009	B2
7641642	Murai et al.	Jan 2010	B2
7648490	Kuroda	Jan 2010	B2
7652111	Hermeling et al.	Jan 2010	B2
7666173	Mishima	Feb 2010	B2
7666174	Onishi	Feb 2010	B2
7686790	Rasmussen et al.	Mar 2010	B2
7687596	Hermeling et al.	Mar 2010	B2
7695461	Rosenfeld	Apr 2010	B2
7696402	Nishikawa	Apr 2010	B2
7708725	Tamagawa	May 2010	B2
7717150	Manabe	May 2010	B2
7722587	Suzuki et al.	May 2010	B2
7722590	Tsuji	May 2010	B2
7727217	Hancock-Cooke	Jun 2010	B2
7736351	Nigam	Jun 2010	B2
7744576	Busam et al.	Jun 2010	B2
7744578	Tanio et al.	Jun 2010	B2
7750203	Busam et al.	Jul 2010	B2
7754822	Daniel et al.	Jul 2010	B2
7754940	Brisebois	Jul 2010	B2
7759540	Litvay et al.	Jul 2010	B2
7763004	Beck	Jul 2010	B2
7767875	Olson	Aug 2010	B2
7767878	Suzuki	Aug 2010	B2
7772420	Hermeling et al.	Aug 2010	B2
7786341	Schneider et al.	Aug 2010	B2
7795492	Vartiainen	Sep 2010	B2
7803145	Rosenfeld	Sep 2010	B2
7825291	Elfsberg et al.	Nov 2010	B2
7850672	Guidotti	Dec 2010	B2
7851667	Becker et al.	Dec 2010	B2
7855314	Hanao	Dec 2010	B2
7857797	Kudo	Dec 2010	B2
7858842	Komatsu	Dec 2010	B2
7884259	Hanao	Feb 2011	B2
7888549	Jansson	Feb 2011	B2
7910797	Nandrea	Mar 2011	B2
7935207	Zhao	May 2011	B2
7935861	Suzuki	May 2011	B2
7938813	Wang et al.	May 2011	B2
7942858	Francoeur	May 2011	B2
7951126	Nanjyo	May 2011	B2
7982091	Konawa	Jul 2011	B2
7993319	Sperl	Aug 2011	B2
8017827	Hundorf et al.	Sep 2011	B2
8029486	Nakajima	Oct 2011	B2
8034991	Bruzadin	Oct 2011	B2
8039684	Guidotti	Oct 2011	B2
8052454	Polnyi	Nov 2011	B2
8057620	Perego et al.	Nov 2011	B2
8109915	Shimoe	Feb 2012	B2
8133212	Takada	Mar 2012	B2
8148598	Tsang	Apr 2012	B2
8163124	Moriura et al.	Apr 2012	B2
8173858	Kuroda	May 2012	B2
8178747	Venturino	May 2012	B2
8183430	Hakansson et al.	May 2012	B2
8186296	Brown et al.	May 2012	B2
8187240	Busam et al.	May 2012	B2
8198506	Venturino	Jun 2012	B2
8211815	Baker	Jul 2012	B2
8236715	Schmidt et al.	Aug 2012	B2
8237012	Miyama	Aug 2012	B2
8246594	Sperl	Aug 2012	B2
8258367	Lawson et al.	Sep 2012	B2
8268424	Suzuki	Sep 2012	B1
8273943	Noda	Sep 2012	B2
8283516	Litvay	Oct 2012	B2
8317766	Naoto	Nov 2012	B2
8317768	Larsson	Nov 2012	B2
8319005	Becker et al.	Nov 2012	B2
8343123	Noda	Jan 2013	B2
8343296	Blessing et al.	Jan 2013	B2
8360977	Marttila	Jan 2013	B2
8361047	Mukai	Jan 2013	B2
8377025	Nakajima	Feb 2013	B2
8450555	Nahn et al.	May 2013	B2
8496637	Hundorf et al.	Jul 2013	B2
8519213	Venturino et al.	Aug 2013	B2
8524355	Nakaoka	Sep 2013	B2
8552252	Hundorf et al.	Oct 2013	B2
8568566	Jackels et al.	Oct 2013	B2
8581019	Carlucci et al.	Nov 2013	B2
8603058	Sperl et al.	Dec 2013	B2
8604270	Venturino et al.	Dec 2013	B2
8633347	Bianco et al.	Jan 2014	B2
8674170	Busam et al.	Mar 2014	B2
8766031	Becker et al.	Jul 2014	B2
8772570	Kawakami et al.	Jul 2014	B2
8785715	Wright et al.	Jul 2014	B2
8791318	Becker et al.	Jul 2014	B2
20010007065	Blanchard	Jul 2001	A1
20010008964	Kurata et al.	Jul 2001	A1
20010016548	Kugler et al.	Aug 2001	A1
20010020157	Mizutani	Sep 2001	A1
20010037101	Allan et al.	Nov 2001	A1
20010044610	Kim	Nov 2001	A1
20020007167	Dan	Jan 2002	A1
20020007169	Graef	Jan 2002	A1
20020016122	Curro et al.	Feb 2002	A1
20020016579	Stenberg	Feb 2002	A1
20020045881	Kusibojoska et al.	Apr 2002	A1
20020056516	Ochi	May 2002	A1
20020062112	Mizutani	May 2002	A1
20020062116	Mizutani et al.	May 2002	A1
20020065498	Ohashi	May 2002	A1
20020072471	Ikeuchi et al.	Jun 2002	A1
20020082575	Dan	Jun 2002	A1
20020087139	Popp et al.	Jul 2002	A1
20020102392	Fish	Aug 2002	A1
20020115969	Maeda et al.	Aug 2002	A1
20020123728	Graef et al.	Sep 2002	A1
20020151634	Rohrbaugh et al.	Oct 2002	A1
20020151861	Klemp et al.	Oct 2002	A1
20020173767	Popp et al.	Nov 2002	A1
20020192366	Cramer et al.	Dec 2002	A1
20020197695	Glucksmann et al.	Dec 2002	A1
20030036741	Abba et al.	Feb 2003	A1
20030078553	Wada	Apr 2003	A1
20030084983	Rangachari et al.	May 2003	A1
20030088223	Vogt et al.	May 2003	A1
20030105190	Diehl et al.	Jun 2003	A1
20030114816	Underhill	Jun 2003	A1
20030114818	Benecke et al.	Jun 2003	A1
20030115969	Koyano et al.	Jun 2003	A1
20030120235	Boulanger	Jun 2003	A1
20030135181	Chen et al.	Jul 2003	A1
20030135182	Woon et al.	Jul 2003	A1
20030139712	Dodge	Jul 2003	A1
20030139715	Dodge	Jul 2003	A1
20030139718	Graef	Jul 2003	A1
20030144642	Dopps	Jul 2003	A1
20030144644	Murai et al.	Jul 2003	A1
20030148684	Cramer et al.	Aug 2003	A1
20030148694	Ghiam	Aug 2003	A1
20030167045	Graef	Sep 2003	A1
20030171727	Graef	Sep 2003	A1
20030208175	Gross	Nov 2003	A1
20030225385	Glaug	Dec 2003	A1
20030233082	Kline et al.	Dec 2003	A1
20030236512	Baker	Dec 2003	A1
20040019338	Litvay et al.	Jan 2004	A1
20040022998	Miyamoto et al.	Feb 2004	A1
20040033750	Everett	Feb 2004	A1
20040063367	Dodge	Apr 2004	A1
20040064115	Arora	Apr 2004	A1
20040064116	Arora	Apr 2004	A1
20040064125	Justmann et al.	Apr 2004	A1
20040065420	Graef	Apr 2004	A1
20040082928	Pesce et al.	Apr 2004	A1
20040097895	Busam et al.	May 2004	A1
20040122411	Hancock-Cooke	Jun 2004	A1
20040127871	Odorzynski	Jul 2004	A1
20040127872	Petryk	Jul 2004	A1
20040134596	Rosati et al.	Jul 2004	A1
20040138633	Mishima et al.	Jul 2004	A1
20040147890	Nakahata et al.	Jul 2004	A1
20040158212	Ponomarenko et al.	Aug 2004	A1
20040162536	Becker et al.	Aug 2004	A1
20040167486	Busam et al.	Aug 2004	A1
20040167489	Kellenberger et al.	Aug 2004	A1
20040193127	Hansson	Sep 2004	A1
20040215160	Chmielewski	Oct 2004	A1
20040220541	Suzuki et al.	Nov 2004	A1
20040225271	Datta et al.	Nov 2004	A1
20040231065	Daniel et al.	Nov 2004	A1
20040236299	Tsang et al.	Nov 2004	A1
20040249355	Tanio et al.	Dec 2004	A1
20040260259	Baker	Dec 2004	A1
20050001929	Ochial et al.	Jan 2005	A1
20050004543	Schroer et al.	Jan 2005	A1
20050004548	Otsubo et al.	Jan 2005	A1
20050008839	Cramer et al.	Jan 2005	A1
20050018258	Miyagi	Jan 2005	A1
20050038401	Suzuki et al.	Feb 2005	A1
20050070867	Beruda et al.	Mar 2005	A1
20050085784	LeMinh et al.	Apr 2005	A1
20050090789	Graef	Apr 2005	A1
20050148258	Chakravarty	Jul 2005	A1
20050148990	Shimoe	Jul 2005	A1
20050154363	Minato	Jul 2005	A1
20050159720	Gentilcore	Jul 2005	A1
20050165208	Popp et al.	Jul 2005	A1
20050171499	Nigam et al.	Aug 2005	A1
20050176910	Jaworek et al.	Aug 2005	A1
20050203475	LaVon et al.	Sep 2005	A1
20050215752	Popp et al.	Sep 2005	A1
20050229543	Tippey	Oct 2005	A1
20050245684	Daniel et al.	Nov 2005	A1
20050288645	LaVon	Dec 2005	A1
20050288646	LaVon	Dec 2005	A1
20060004334	Schlinz	Jan 2006	A1
20060021695	Blessing et al.	Feb 2006	A1
20060024433	Blessing et al.	Feb 2006	A1
20060069371	Ohashi et al.	Mar 2006	A1
20060073969	Torli et al.	Apr 2006	A1
20060081348	Graef	Apr 2006	A1
20060129114	Mason et al.	Jun 2006	A1
20060142724	Watanabe	Jun 2006	A1
20060155057	Hermeling et al.	Jul 2006	A1
20060155254	Sanz et al.	Jul 2006	A1
20060167215	Hermeling et al.	Jul 2006	A1
20060177647	Schmidt et al.	Aug 2006	A1
20060178071	Schmidt et al.	Aug 2006	A1
20060184146	Suzuki	Aug 2006	A1
20060184149	Kasai et al.	Aug 2006	A1
20060189954	Kudo	Aug 2006	A1
20060202380	Bentley	Sep 2006	A1
20060206091	Cole	Sep 2006	A1
20060211828	Daniel et al.	Sep 2006	A1
20060240229	Ehrnsperger et al.	Oct 2006	A1
20060264860	Beck	Nov 2006	A1
20060264861	Lavon et al.	Nov 2006	A1
20070027436	Nakagawa et al.	Feb 2007	A1
20070043191	Hermeling et al.	Feb 2007	A1
20070043330	Lankhof et al.	Feb 2007	A1
20070073253	Miyama	Mar 2007	A1
20070078422	Glaug et al.	Apr 2007	A1
20070088308	Ehrnsperger et al.	Apr 2007	A1
20070093164	Nakaoka	Apr 2007	A1
20070093767	Carlucci et al.	Apr 2007	A1
20070100307	Nomoto	May 2007	A1
20070118087	Flohr et al.	May 2007	A1
20070123834	McDowall et al.	May 2007	A1
20070156108	Becker et al.	Jul 2007	A1
20070167928	Becker et al.	Jul 2007	A1
20070179464	Becker et al.	Aug 2007	A1
20070179469	Takahashi et al.	Aug 2007	A1
20070191798	Glaug	Aug 2007	A1
20070219521	Hird et al.	Sep 2007	A1
20070219523	Bruun	Sep 2007	A1
20070244455	Hansson et al.	Oct 2007	A1
20070246147	Venturino et al.	Oct 2007	A1
20070282288	Noda	Dec 2007	A1
20070282290	Cole	Dec 2007	A1
20070282291	Cole	Dec 2007	A1
20080027402	Schmidt et al.	Jan 2008	A1
20080032035	Schmidt et al.	Feb 2008	A1
20080091159	Carlucci et al.	Apr 2008	A1
20080119810	Kuroda	May 2008	A1
20080125735	Busam et al.	May 2008	A1
20080221538	Zhao	Sep 2008	A1
20080221539	Zhao	Sep 2008	A1
20080228158	Sue et al.	Sep 2008	A1
20080262459	Kamoto	Oct 2008	A1
20080268194	Kim et al.	Oct 2008	A1
20080274227	Boatman et al.	Nov 2008	A1
20080281287	Marcelo	Nov 2008	A1
20080312617	Hundorf et al.	Dec 2008	A1
20080312618	Hundorf et al.	Dec 2008	A1
20080312619	Ashton et al.	Dec 2008	A1
20080312620	Ashton et al.	Dec 2008	A1
20080312621	Hundorf et al.	Dec 2008	A1
20080312622	Hundorf et al.	Dec 2008	A1
20080312623	Hundorf et al.	Dec 2008	A1
20080312624	Hundorf et al.	Dec 2008	A1
20080312625	Hundorf et al.	Dec 2008	A1
20080312627	Takeuchi	Dec 2008	A1
20080312628	Hundorf et al.	Dec 2008	A1
20090056867	Moriura et al.	Mar 2009	A1
20090058994	Kao et al.	Mar 2009	A1
20090062760	Wright	Mar 2009	A1
20090112173	Bissah	Apr 2009	A1
20090112175	Bissah	Apr 2009	A1
20090157022	Macdonald	Jun 2009	A1
20090192035	Stueven et al.	Jul 2009	A1
20090240220	Macdonald	Sep 2009	A1
20090247977	Takeuchi	Oct 2009	A1
20090258994	Stueven et al.	Oct 2009	A1
20090270825	Wciorka et al.	Oct 2009	A1
20090298963	Matsumoto et al.	Dec 2009	A1
20090299312	Macdonald	Dec 2009	A1
20090306618	Kudo	Dec 2009	A1
20090318884	Meyer et al.	Dec 2009	A1
20100051166	Hundorf et al.	Mar 2010	A1
20100062165	Suzuki	Mar 2010	A1
20100062934	Suzuki	Mar 2010	A1
20100063470	Suzuki	Mar 2010	A1
20100068520	Stueven et al.	Mar 2010	A1
20100100065	Bianco	Apr 2010	A1
20100115237	Brewer et al.	May 2010	A1
20100121296	Noda	May 2010	A1
20100137773	Gross	Jun 2010	A1
20100137823	Corneliusson	Jun 2010	A1
20100198179	Noda	Aug 2010	A1
20100228210	Busam et al.	Sep 2010	A1
20100241097	Nigam et al.	Sep 2010	A1
20100262099	Klofta	Oct 2010	A1
20100274208	Gabrielii	Oct 2010	A1
20100274210	Noda	Oct 2010	A1
20100312208	Bond et al.	Dec 2010	A1
20100324521	Mukai	Dec 2010	A1
20100324523	Mukai	Dec 2010	A1
20110041999	Hundorf et al.	Feb 2011	A1
20110060303	Bissah	Mar 2011	A1
20110066127	Kuwano	Mar 2011	A1
20110071486	Harada	Mar 2011	A1
20110092944	Sagisaka	Apr 2011	A1
20110112498	Nhan et al.	May 2011	A1
20110125120	Nishitani	May 2011	A1
20110130732	Jackels et al.	Jun 2011	A1
20110130737	Sagisaka	Jun 2011	A1
20110137276	Yoshikawa	Jun 2011	A1
20110144602	Long	Jun 2011	A1
20110144604	Noda	Jun 2011	A1
20110144606	Nandrea	Jun 2011	A1
20110152813	Ellingson	Jun 2011	A1
20110166540	Yang et al.	Jul 2011	A1
20110172630	Nomoto	Jul 2011	A1
20110174430	Zhao	Jul 2011	A1
20110208147	Kawakami et al.	Aug 2011	A1
20110250413	Lu et al.	Oct 2011	A1
20110268932	Catalan et al.	Nov 2011	A1
20110274834	Brown et al.	Nov 2011	A1
20110288513	Hundorf et al.	Nov 2011	A1
20110288514	Kuroda	Nov 2011	A1
20110319846	Rinnert et al.	Dec 2011	A1
20110319848	McKiernan et al.	Dec 2011	A1
20110319851	Kudo	Dec 2011	A1
20120004633	Marcelo	Jan 2012	A1
20120016326	Brennan et al.	Jan 2012	A1
20120022479	Cotton	Jan 2012	A1
20120035566	Sagisaka	Feb 2012	A1
20120035576	Ichikawa	Feb 2012	A1
20120064792	Bauduin	Mar 2012	A1
20120071848	Zhang	Mar 2012	A1
20120165771	Ruman et al.	Jun 2012	A1
20120165776	McGregor et al.	Jun 2012	A1
20120170779	Hildebrandt	Jul 2012	A1
20120175056	Tsang	Jul 2012	A1
20120184934	Venturino	Jul 2012	A1
20120232514	Baker	Sep 2012	A1
20120238977	Oku	Sep 2012	A1
20120253306	Otsubo	Oct 2012	A1
20120256750	Novak	Oct 2012	A1
20120271262	Venturino	Oct 2012	A1
20120312491	Jackels	Dec 2012	A1
20120316046	Jackels et al.	Dec 2012	A1
20120316523	Hippe et al.	Dec 2012	A1
20120316526	Rosati	Dec 2012	A1
20120316527	Rosati et al.	Dec 2012	A1
20120316529	Kreuzer et al.	Dec 2012	A1
20120323195	Ehrnsperger et al.	Dec 2012	A1
20120323201	Bissah	Dec 2012	A1
20120323202	Bissah	Dec 2012	A1
20130035656	Moriya	Feb 2013	A1
20130041334	Prioleau	Feb 2013	A1
20130211354	Tsuji et al.	Aug 2013	A1
20130218115	Katsuragawa et al.	Aug 2013	A1
20130226119	Katsuragawa et al.	Aug 2013	A1
20130226120	Van De Maele	Aug 2013	A1
20140005622	Wirtz et al.	Jan 2014	A1
20140005623	Wirtz et al.	Jan 2014	A1
20140027066	Jackels et al.	Jan 2014	A1
20140039437	Van De Maele	Feb 2014	A1
20140135726	Busam et al.	May 2014	A1
20140142531	Sasayama et al.	May 2014	A1
20140163501	Ehrnsperger et al.	Jun 2014	A1
20140163502	Arizti et al.	Jun 2014	A1
20140163503	Arizti et al.	Jun 2014	A1
20140163506	Roe et al.	Jun 2014	A1
20140163511	Roe et al.	Jun 2014	A1
20140324007	Hundorf et al.	Oct 2014	A1
20140324008	Hundorf et al.	Oct 2014	A1

Foreign Referenced Citations (489)

Number	Date	Country
2001370	Apr 1990	CA
2291997	Jun 2000	CA
2308961	Nov 2000	CA
2487027	Dec 2003	CA
2561521	Mar 2007	CA
2630713	Nov 2008	CA
2636673	Jan 2009	CA
2712563	Aug 2010	CA
2702001	Oct 2010	CA
1238171	Dec 1999	CN
2362468	Feb 2000	CN
2527254	Dec 2002	CN
2535020	Feb 2003	CN
2548609	May 2003	CN
1539391	Oct 2004	CN
1939242	Apr 2007	CN
101292930	Oct 2008	CN
201263750	Jul 2009	CN
201591689	Sep 2010	CN
201855366	Jun 2011	CN
3205931	Sep 1983	DE
3608114	Sep 1987	DE
19732499	Feb 1999	DE
10204937	Aug 2003	DE
083022	Jul 1983	EP
149880	Jul 1985	EP
0149880	Jul 1985	EP
0203289	Dec 1986	EP
0206208	Dec 1986	EP
209561	Jan 1987	EP
297411	Jan 1989	EP
304957	Mar 1989	EP
374542	Jun 1990	EP
394274	Oct 1990	EP
0403832	Dec 1990	EP
481322	Apr 1992	EP
530438	Mar 1993	EP
547847	Jun 1993	EP
555346	Aug 1993	EP
559476	Sep 1993	EP
591647	Apr 1994	EP
597273	May 1994	EP
601610	Jun 1994	EP
632068	Jan 1995	EP
0640330	Mar 1995	EP
0668066	Sep 1995	EP
685214	Dec 1995	EP
687453	Dec 1995	EP
0689817	Jan 1996	EP
0691133	Jan 1996	EP
724418	Aug 1996	EP
725613	Aug 1996	EP
725615	Aug 1996	EP
725616	Aug 1996	EP
758543	Feb 1997	EP
0761194	Mar 1997	EP
769284	Apr 1997	EP
0781537	Jul 1997	EP
783877	Jul 1997	EP
787472	Aug 1997	EP
788874	Aug 1997	EP
796068	Sep 1997	EP
799004	Oct 1997	EP
822794	Feb 1998	EP
826351	Mar 1998	EP
844861	Jun 1998	EP
863733	Sep 1998	EP
971751	Sep 1998	EP
875224	Nov 1998	EP
880955	Dec 1998	EP
891758	Jan 1999	EP
0893115	Jan 1999	EP
904755	Mar 1999	EP
0916327	May 1999	EP
925769	Jun 1999	EP
933074	Aug 1999	EP
937736	Aug 1999	EP
941157	Sep 1999	EP
947549	Oct 1999	EP
951887	Oct 1999	EP
0951890	Oct 1999	EP
2295493	Oct 1999	EP
2305749	Oct 1999	EP
2330152	Oct 1999	EP
953326	Nov 1999	EP
0978263	Feb 2000	EP
985397	Mar 2000	EP
1005847	Jun 2000	EP
1008333	Jun 2000	EP
1013252	Jun 2000	EP
1018999	Jul 2000	EP
1019002	Jul 2000	EP
1019003	Jul 2000	EP
1022008	Jul 2000	EP
1023884	Aug 2000	EP
1053729	Nov 2000	EP
1059072	Dec 2000	EP
1063954	Jan 2001	EP
1071388	Jan 2001	EP
1078618	Feb 2001	EP
1088537	Apr 2001	EP
1116479	Jul 2001	EP
1132069	Sep 2001	EP
1173128	Jan 2002	EP
1175194	Jan 2002	EP
1184018	Mar 2002	EP
1192312	Apr 2002	EP
1196122	Apr 2002	EP
1199059	Apr 2002	EP
1199327	Apr 2002	EP
1208824	May 2002	EP
0793469	Jun 2002	EP
1210925	Jun 2002	EP
1224922	Jul 2002	EP
1225857	Jul 2002	EP
1262531	Dec 2002	EP
1263374	Dec 2002	EP
1275358	Jan 2003	EP
1275361	Jan 2003	EP
1293187	Mar 2003	EP
1304986	May 2003	EP
1332742	Aug 2003	EP
1339368	Sep 2003	EP
1374817	Jan 2004	EP
1388334	Feb 2004	EP
1402863	Mar 2004	EP
962208	Aug 2004	EP
1447066	Aug 2004	EP
1447067	Aug 2004	EP
1460987	Sep 2004	EP
963749	Nov 2004	EP
1495739	Jan 2005	EP
1524955	Apr 2005	EP
1920743	Apr 2005	EP
1541103	Jun 2005	EP
1551344	Jul 2005	EP
1586289	Oct 2005	EP
1588723	Oct 2005	EP
1605882	Dec 2005	EP
1609448	Dec 2005	EP
1621166	Feb 2006	EP
1621167	Feb 2006	EP
1632206	Mar 2006	EP
1642556	Apr 2006	EP
1656162	May 2006	EP
1669046	Jun 2006	EP
1688114	Aug 2006	EP
2314265	Aug 2006	EP
1723939	Nov 2006	EP
1738727	Jan 2007	EP
1754461	Feb 2007	EP
1787611	May 2007	EP
1813238	Aug 2007	EP
2008626	Dec 2008	EP
2055279	May 2009	EP
2093049	Aug 2009	EP
2130522	Dec 2009	EP
2444046	Apr 2012	EP
2532328	Dec 2012	EP
2532329	Dec 2012	EP
2532332	Dec 2012	EP
2679210	Jan 2014	EP
2740449	Jun 2014	EP
2740450	Jun 2014	EP
2740452	Jun 2014	EP
2213491	Aug 2004	ES
2566631	Jan 1986	FR
2612770	Sep 1988	FR
2810234	Dec 2001	FR
1333081	Aug 1971	GB
1307441	Feb 1973	GB
1513055	Jun 1978	GB
2101468	Jan 1983	GB
2170108	Jul 1986	GB
2262873	Jul 1993	GB
2288540	Jun 1994	GB
2354449	Mar 2001	GB
2452260	Oct 2007	GB
851769	Nov 1985	GR
0984KOL1999	Oct 2005	IN
212479	Mar 2007	IN
208543	Aug 2007	IN
0980MUM2009	Jun 2009	IN
5572928	May 1980	JP
598322	Jan 1984	JP
630148323	Sep 1988	JP
03224481	Oct 1991	JP
04122256	Apr 1992	JP
06269475	Sep 1994	JP
10328232	Dec 1998	JP
11033056	Feb 1999	JP
11318980	Nov 1999	JP
2000232985	Aug 2000	JP
2000238161	Sep 2000	JP
2001037810	Feb 2001	JP
2001046435	Feb 2001	JP
2001120597	May 2001	JP
2001158074	Jun 2001	JP
2001178768	Jul 2001	JP
2001198157	Jul 2001	JP
2001224626	Aug 2001	JP
03420481	Nov 2001	JP
2001353174	Dec 2001	JP
2002052042	Feb 2002	JP
2002113800	Apr 2002	JP
2002165832	Jun 2002	JP
2002165836	Jun 2002	JP
2002272769	Sep 2002	JP
2002325792	Nov 2002	JP
2002325799	Nov 2002	JP
2002369841	Dec 2002	JP
2003153955	May 2003	JP
2003265524	Sep 2003	JP
2003275237	Sep 2003	JP
2004089269	Mar 2004	JP
03566012	Jun 2004	JP
03568146	Jun 2004	JP
03616077	Nov 2004	JP
2004337314	Dec 2004	JP
2004337385	Dec 2004	JP
03640475	Jan 2005	JP
2005000312	Jan 2005	JP
03660816	Mar 2005	JP
03676219	May 2005	JP
03688403	Jun 2005	JP
03705943	Aug 2005	JP
03719819	Sep 2005	JP
03724963	Sep 2005	JP
03725008	Sep 2005	JP
03737376	Nov 2005	JP
2006014792	Jan 2006	JP
03781617	Mar 2006	JP
2006110329	Apr 2006	JP
03801449	May 2006	JP
2006116036	May 2006	JP
03850102	Sep 2006	JP
03850207	Sep 2006	JP
03856941	Sep 2006	JP
03868628	Oct 2006	JP
03874499	Nov 2006	JP
03877702	Nov 2006	JP
2006325639	Dec 2006	JP
2006346021	Dec 2006	JP
03904356	Jan 2007	JP
2007007455	Jan 2007	JP
2007007456	Jan 2007	JP
03926042	Mar 2007	JP
03934855	Mar 2007	JP
2007089906	Apr 2007	JP
2007105198	Apr 2007	JP
2007152033	Jun 2007	JP
03986210	Jul 2007	JP
03986222	Jul 2007	JP
2007167453	Jul 2007	JP
2007167453	Jul 2007	JP
2007175515	Jul 2007	JP
2007195665	Aug 2007	JP
2007267763	Oct 2007	JP
2007275491	Oct 2007	JP
04035341	Nov 2007	JP
04058281	Dec 2007	JP
04061086	Dec 2007	JP
04092319	Mar 2008	JP
2008080150	Apr 2008	JP
2008093289	Apr 2008	JP
04124322	May 2008	JP
2008119081	May 2008	JP
2008136739	Jun 2008	JP
2008136877	Jun 2008	JP
04148594	Jul 2008	JP
04148620	Jul 2008	JP
2008154606	Jul 2008	JP
04162609	Aug 2008	JP
04162637	Aug 2008	JP
04166923	Aug 2008	JP
04167406	Aug 2008	JP
04173723	Aug 2008	JP
04190675	Sep 2008	JP
04190693	Sep 2008	JP
04208338	Oct 2008	JP
2008246089	Oct 2008	JP
04230971	Dec 2008	JP
2008295475	Dec 2008	JP
2008295713	Dec 2008	JP
04261593	Feb 2009	JP
2009112590	May 2009	JP
04322228	Jun 2009	JP
2009136601	Jun 2009	JP
2009142401	Jul 2009	JP
2009201878	Sep 2009	JP
04392936	Oct 2009	JP
2009232987	Oct 2009	JP
2009261777	Nov 2009	JP
2009291473	Dec 2009	JP
2009297048	Dec 2009	JP
04458702	Feb 2010	JP
04459013	Feb 2010	JP
2010022560	Feb 2010	JP
04481325	Mar 2010	JP
2010051654	Mar 2010	JP
2010063814	Mar 2010	JP
2010063944	Mar 2010	JP
04492957	Apr 2010	JP
2010068954	Apr 2010	JP
2010075462	Apr 2010	JP
2010082059	Apr 2010	JP
2010104545	May 2010	JP
2010104547	May 2010	JP
2010110535	May 2010	JP
2010119454	Jun 2010	JP
2010119605	Jun 2010	JP
2010119743	Jun 2010	JP
2010131131	Jun 2010	JP
2010131132	Jun 2010	JP
2010131206	Jun 2010	JP
2010131297	Jun 2010	JP
2010136917	Jun 2010	JP
2010136973	Jun 2010	JP
04540563	Jul 2010	JP
04587947	Sep 2010	JP
2010194124	Sep 2010	JP
2010201093	Sep 2010	JP
2010221067	Oct 2010	JP
04620299	Nov 2010	JP
04627472	Nov 2010	JP
04627473	Nov 2010	JP
04638087	Dec 2010	JP
04652626	Dec 2010	JP
2010273842	Dec 2010	JP
2010284418	Dec 2010	JP
2011000480	Jan 2011	JP
2011030700	Feb 2011	JP
04693574	Mar 2011	JP
2011067484	Apr 2011	JP
2011072720	Apr 2011	JP
2011104014	Jun 2011	JP
2011104122	Jun 2011	JP
2011120661	Jun 2011	JP
2011125360	Jun 2011	JP
2011125537	Jun 2011	JP
04776516	Jul 2011	JP
2011130797	Jul 2011	JP
2011130799	Jul 2011	JP
2011156032	Aug 2011	JP
2011156070	Aug 2011	JP
2011156254	Aug 2011	JP
04824882	Sep 2011	JP
4850272	Oct 2011	JP
04855533	Nov 2011	JP
2011239858	Dec 2011	JP
04931572	Feb 2012	JP
04937225	Mar 2012	JP
04953618	Mar 2012	JP
04969437	Apr 2012	JP
04969640	Apr 2012	JP
4971491	Apr 2012	JP
04974524	Apr 2012	JP
04979780	Apr 2012	JP
05016020	Jun 2012	JP
05027364	Jun 2012	JP
05031082	Jul 2012	JP
05042351	Jul 2012	JP
05043569	Jul 2012	JP
05043591	Jul 2012	JP
05046488	Jul 2012	JP
2012125625	Jul 2012	JP
05053765	Aug 2012	JP
05070275	Aug 2012	JP
05079931	Sep 2012	JP
05080189	Sep 2012	JP
05084442	Sep 2012	JP
05084476	Sep 2012	JP
5085770	Sep 2012	JP
05089269	Sep 2012	JP
05113146	Oct 2012	JP
05129536	Nov 2012	JP
05105884	Dec 2012	JP
20010005620	Jan 2001	KR
20020035634	May 2002	KR
20080028771	Apr 2008	KR
9400916	Mar 1994	SE
9704893	Dec 1997	SE
WO9015830	Dec 1990	WO
WO9321237	Oct 1993	WO
WO9321879	Nov 1993	WO
WO9510996	Apr 1995	WO
WO9511652	May 1995	WO
WO9514453	Jun 1995	WO
WO9515139	Jun 1995	WO
WO9516424	Jun 1995	WO
WO9516746	Jun 1995	WO
WO9519753	Jul 1995	WO
WO9521596	Aug 1995	WO
WO9524173	Sep 1995	WO
WO9529657	Nov 1995	WO
WO9532698	Dec 1995	WO
WO9534329	Dec 1995	WO
WO9616624	Jun 1996	WO
WO9619173	Jun 1996	WO
WO9711659	Apr 1997	WO
WO9717922	May 1997	WO
WO9816179	Apr 1998	WO
WO9816180	Apr 1998	WO
WO9843684	Oct 1998	WO
WO9913813	Mar 1999	WO
WO9934841	Jul 1999	WO
WO9951178	Oct 1999	WO
WO0000235	Jan 2000	WO
WO0032145	Jun 2000	WO
WO0059430	Oct 2000	WO
WO0115647	Mar 2001	WO
WO0126596	Apr 2001	WO
WO0207663	Jan 2002	WO
WO0232962	Apr 2002	WO
WO02064877	Aug 2002	WO
WO02067809	Sep 2002	WO
WO03009794	Feb 2003	WO
WO03053297	Jul 2003	WO
WO03105738	Dec 2003	WO
WO2004021946	Mar 2004	WO
WO2004049995	Jun 2004	WO
WO2004071539	Aug 2004	WO
WO2004084784	Oct 2004	WO
WO2004105664	Dec 2004	WO
WO2005018694	Mar 2005	WO
WO2005087164	Sep 2005	WO
WO2006104024	May 2006	WO
WO2006059922	Jun 2006	WO
WO2006062258	Jun 2006	WO
WO2006066029	Jun 2006	WO
WO2006083584	Aug 2006	WO
WO2006134904	Dec 2006	WO
WO2006134906	Dec 2006	WO
WO2007000315	Jan 2007	WO
WO2007046052	Apr 2007	WO
WO2007047598	Apr 2007	WO
WO2007049725	May 2007	WO
WO2007061035	May 2007	WO
WO2007142145	Dec 2007	WO
WO2007148502	Dec 2007	WO
WO2008018922	Feb 2008	WO
WO2008065945	Jun 2008	WO
WO2008146749	Dec 2008	WO
WO2008155699	Dec 2008	WO
WO2009004941	Jan 2009	WO
WO2009005431	Jan 2009	WO
WO2009139248	Jan 2009	WO
WO2009139255	Jan 2009	WO
WO2009041223	Apr 2009	WO
WO2009096108	Aug 2009	WO
WO2009107435	Sep 2009	WO
WO2009122830	Oct 2009	WO
WO2009152018	Dec 2009	WO
WO2009155264	Dec 2009	WO
WO2009155265	Dec 2009	WO
WO2010071508	Jun 2010	WO
WO2010074319	Jul 2010	WO
WO2010107096	Sep 2010	WO
WO2010114052	Oct 2010	WO
WO2010117015	Oct 2010	WO
WO201153044	May 2011	WO
WO2011118725	Sep 2011	WO
WO2011118842	Sep 2011	WO
WO2011145653	Nov 2011	WO
WO2011150955	Dec 2011	WO
WO2011163582	Dec 2011	WO
WO2012002252	Jan 2012	WO
WO2012014436	Feb 2012	WO
WO2012042908	Apr 2012	WO
WO2012043077	Apr 2012	WO
WO2012043078	Apr 2012	WO
WO2012052172	Apr 2012	WO
WO2012043082	May 2012	WO
WO2012067216	May 2012	WO
WO2012073499	Jun 2012	WO
WO201291016	Jul 2012	WO
WO2012090508	Jul 2012	WO
WO2012101934	Aug 2012	WO
WO2012102034	Aug 2012	WO
WO2012117824	Sep 2012	WO
WO2012132460	Oct 2012	WO
WO2012170778	Dec 2012	WO
WO2012170779	Dec 2012	WO
WO2012170781	Dec 2012	WO
WO2012170808	Dec 2012	WO
WO2012174026	Dec 2012	WO
WO2013001788	Jan 2013	WO
WO2013060733	May 2013	WO
WO2014078247	May 2014	WO

Non-Patent Literature Citations (3)

Entry
All Office Actions, U.S. Appl. No. 13/709,244.
All Office Actions, U.S. Appl. No. 13/709,254.
International Search Report and Written Opinion, PCT/US2013/073350, date of mailing Mar. 4, 2014.

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