Patent Application
20050148974
The present invention relates generally to disposable absorbent garments, and in particular, to a disposable absorbent garment having an adjustable extension fold and fastener system that provides an improved fit and containment for bodily exudates, and also to the method for making the disposable absorbent garment.
Disposable absorbent garments can be configured in many different forms. For example, disposable absorbent garments can be configured as a pant-type product, a pull-on garment, or as a diaper-type product that is drawn up between the legs and fastened about the waist with various fastening systems. In some configurations, the disposable absorbent garment has a waist feature allowing the user to adjust the overall length of the garment. In some configurations, the disposable absorbent garment is configured with a folded down waist feature disposed in the rear waist region. The waist feature extends laterally outward and includes a fastening system attached thereto, as disclosed for example in U.S. Pat. No. 5,989,236. In one system, the folded down waist feature folds over the garment side of the chassis, but does not form a pocket to collect any bodily exudates. In an other system, the disposable absorbent garment does not have any fasteners that secure the portion of the chassis underlying the waist feature to the front portion of the chassis, such that the unsecured portion of the chassis can move away from the front portion and permit leakage.
Therefore, the need remains for an improved absorbent garment that has a flexible waist feature capable of allowing the garment to be adjusted to fit a variety of users but securely retains body exudates without leakage. Further, there is a need for an improved adjustable waist feature that conforms to the body of the user during use without interferences from the absorbent insert.
Briefly stated, in one embodiment, a disposable article includes a body chassis comprising a body panel and an extension fold folded over at least a first portion of the body panel. The extension fold and the first portion of the body panel define a folded edge along a waist edge of the body chassis. The extension fold extends longitudinally from the folded edge in an overlying relationship with the first portion of the body panel. The extension fold terminates in a free edge, wherein at least a portion of the free edge is not connected to the body panel such that the free edge of the extension fold and the first portion of the body panel form an opening therebetween. The body panel has at least a second portion with a body side surface extending longitudinally from the free edge of the extension fold such that the body side surface of the second portion does not underlie the extension fold. An absorbent insert is connected to the body panel. At least one garment closing fastener member is connected to the body side surface of the extension fold and the body side surface of the second portion.
In another embodiment, a disposable article includes a first, front body panel and a second, rear body panel. The second rear body panel comprises an extension fold folded over at least a first portion of the second rear body panel. The extension fold and the first portion define a folded edge along a waist edge of the rear body panel. The extension fold extends longitudinally from the folded edge in an overlying relationship with the first portion of the rear body panel. The second rear body panel has at least a second portion with a body side surface extending longitudinally from the free edge of the extension fold such that the body side surface of the second portion does not underlie the extension fold. An absorbent insert is disposed between the first, front body panel and the second, rear body panel. At least one garment closing fastener member is attached to the body side surface of the extension fold and the body side surface of the second portion of the rear body panel.
In another aspect, a method of making a disposable article includes folding a body panel web and thereby forming an extension fold folded over at least a first portion of the body panel web. The method further includes connecting an absorbent insert to the body panel web. In addition, the method includes applying at least one garment closure fastener to the body side surface of the extension fold and the body side surface of a second portion of the body panel web extending away from the extension fold.
In another embodiment, the extension fold is gathered a first amount and the first portion of the body panel is gathered a second amount, wherein the first amount of gathering is greater than the second amount of gathering.
The various embodiments described herein provide significant advantages over other disposable undergarments and methods of making the disposable undergarment thereof. For example, the rear body panel has an extension fold that can be folded to conform to the body of the user, and thereby provide a snug fit to the body of the user. In addition, the garment closing fastener member connecting the rear body panel to the front body panel secures the extension fold and the second portion to the front body panel, thereby providing a secure fit when used. In addition, the difference in the gathering of the extension fold and first portion of the body panel allows expansion of the pocket to receive exudates.
The foregoing paragraphs have been provided by way of general introduction, and are not intended to limit the scope of the following claims. The presently preferred embodiments, together with further advantages, will be best understood by reference to the following detailed description taken in conjunction with the accompanying drawings.
Many of the features and dimensions portrayed in the drawings, and in particular the presentation of layer thicknesses and the like, and the spacing therebetween, have been somewhat exaggerated for the sake of illustration and clarity.
Referring to
The term “bodyside” should not be interpreted to mean in contact with the body of the user, but rather simply means the side that would face toward the body of the user, regardless of whether an undergarment is actually being worn by the user and regardless of whether there are or may be intervening layers between the disposable absorbent article and the body of the user. Likewise, the term “garment side” should not be interpreted to mean in contact with the garments of the user, but rather simply means the side that faces away from the body of the user, and therefore toward any outer garments that may be worn by the user, regardless of whether the undergarment is actually being worn by a user, regardless of whether any such outer garments are actually worn and regardless of whether there may be intervening layers between the component and any outer garment.
The phrases “releasably attached,” “releasably connected,” or “releasably secured,” and variations thereof, refers to two or more elements being connected or connectable such that the elements tend to remain connected absent a separation force applied to one, both or all of the elements, and where the elements are capable of being separated upon the application of a separation force. The required separation force is typically beyond that encountered while wearing the absorbent disposable article.
The terms “connected,” “attached,” and “secured,” and variations thereof, broadly covers two or more items being directly connected one to the other, or by way of one or more intervening members or components.
Referring to
The first and second body panels each have an inner, body side surface 10 and an outer, garment side surface 12. The first front body panel 4 has a first terminal edge 14 formed along the crotch region of the garment and second terminal edge 20 formed along the waist region of the disposable article. In one embodiment, the first and second terminal edges 14, 20 are linear but can assume other shapes. Likewise, the second, rear body panel 6 has a first terminal edge 22 formed along the crotch region of the disposable article and a second terminal edge 18 that is formed along the waist region of the disposable article. In one embodiment, the first and second terminal edges 18, 22 are linear but can assume other shapes.
As shown in
Each of the first and second body panels has an outboard side edge 30, 32 formed along the outer periphery of the opposite side portions of the first and second body panels. In one embodiment, the side edges 30, 32 are the same length, although it should be understood that the outboard side edges of the front and rear body panels could have different lengths relative to each other. In one embodiment, the contoured edges 24, 26 connect the terminal edges 14, 22 with the side edges 30, 32 respectively and define a portion of a leg opening 34. In yet another embodiment, the terminal edges 14, 22 are linear and extend across the entire lateral width of the disposable article without any tapered edges. In one embodiment, shown in
In an alternative embodiment, shown in
In one embodiment, shown for example in
In one embodiment, shown in
In one embodiment, a plurality (meaning two or more) of elastic elements 140 are disposed along the extension fold 16, 116 and along at least a portion 21 of the body panel 6, 106. In one embodiment, there are more elastic elements 140 disposed along the extension fold 16, 116 than along the underlying portion 21 of the rear body panel 6, 106. In one embodiment, there are at least about ten elastic elements 140 disposed along each of the extension fold 16, 116 and the portion 21 of the rear body panel 6, 106. In one embodiment, the extension fold 16, 116 is gathered a first amount and the first portion 21 is gathered a second amount, with the first amount of gathering being greater than the second amount of gathering. In this way, the elastic elements 140 allow the extension fold 16, 116 to gather more than the portion 21 of the rear body panel, which will ensure a better fit, and create a pocket 28 between the extension fold 6, 16 and the first portion 21.
For example, in one embodiment, the pocket 28 is enhanced by at least a portion of the extension fold 16, 116 being gathered more than the portions 21, 23 of the body panel as shown in
The tension difference, or difference in the amount of gathering in the extension fold 16, 116 and the first portion 21, can be measured by the difference in the retraction between the lateral width of the extension fold 16, 116 and the lateral width of portion 21 of the rear body panel 6, 106. To make this measurement, a sample is made by cutting one of the front and rear body panels along a border 39 defined by the free edge 19, 119 such that the sample is formed by the extension fold 16, 116 and the portion 21. The portion 21 and the extension fold 16, 116 are then opened relative to each other and laid flat. The extension fold 16, 116 is then separated from the first portion 21 by cutting along the fold edge 18, 118 so that you have two pieces of material the same size. The two pieces are stretched in the lateral direction 502 to smooth any wrinkles that may have formed while processing the disposable article. Next, steel rulers, e.g., No R590-24 rulers from Westcott, are positioned on the pieces to keep wrinkles from reforming. The extension fold piece and the first portion piece, and in particular any elastics forming a part thereof, are allowed to retract for five minutes. The relaxed lateral widths of the extension fold 16, 116 and the underlying portion 21 are then measured. It is important that an equal length of the extension fold 16, 116 and portion 21 be allowed to be retracted. Finally, the difference between the measured lateral width of the relaxed extension fold 16, 116 from the measured lateral width of the relaxed underlying body panel portion 21 defines the retracted width difference.
In one embodiment, the initial (pre-relaxed) length of the sample (or the lateral width of the extension fold and underlying portion) was about 11.0 inches. In a desired embodiment, the extension fold retracts a greater amount than the underlying body panel. In various embodiments, the retracted width difference for an 11.0 inch sample is between about 0.10 inches and 6.0 inches. More desirably, the difference is between about 0.25 inches and 5.5 inches and most desirably, the difference is between about 0.5 inches and 5.0 inches. It should be understood that samples having other lengths may also exhibit retracted width differences in the ranges provided herein.
In addition, it should be understood that in various embodiments, the retracted width difference can be defined in percentages, which is not dependent on the initial sample length. In various embodiments, the retracted width different is between about 0.90% and about 75% of the initial un-relaxed length of the sample (extension fold and underlying portion). In other embodiments, the retracted width difference is less than about 60% of the initial length of the sample. In other embodiments, the retracted width difference is greater than about 1% of the initial length of the sample. In other embodiments, the retracted width difference is between about 1% and about 55% of the initial length of the sample, alternatively between about 2% and about 40% of the initial length of the sample.
In various embodiments, the extension fold 16, 116, can be made of different materials and/or as a separate piece from the first portion 21. Referring to
In another embodiment, as shown in
As used herein the term extension fold fastener refers to fasteners securing the extension fold to a portion of the underlying body panel, and the term garment closing fasteners refers to fasteners securing the rear and front body panels to each other, for example around the body of the user.
Referring to
Likewise, one or more separate leg elastic elements 36 can be secured to one or both of the rear and front body panels along the edge 24, 26 of the body panel and/or along the edge of the crotch portion forming and defining the leg openings 34. One or more separate leg elastic elements 36 can be secured to one or both of the rear and front body panels along the curved edge 110 of the body chassis 108 and/or along the edge of the crotch portion forming and partially defining the leg openings 134. Leg elastic elements 36, may be also positioned in the crotch region of the absorbent insert 50. The leg elastic elements 36 may be elastic to gasket the leg and prevent leakage in use. The leg elastic elements 36 may be linear or curved in part or in total. The leg elastic elements 36 follow the contoured edges 24, 26 of the rear and front body panels 4, 6 more clearly define the leg openings 34. The leg elastic elements 36 may overlap to completely encircle the leg openings 34, or may have gaps between the leg elastic elements 36 for comfort. Alternatively, one or both of the body panels can be formed without any elastic elements. The various elastic elements 140 can be formed from rubber or other elastomeric materials. One suitable material is a Lycra® elastic material. For example, the various elastic elements can be formed of Lycra® XA Spandex 540, 740 or 940 decitex T-127 or T-128 elastics available from E.I. duPont De Nemours and Company, having an office in Wilmington, Del.
In one embodiment, the leg opening 34, 134 is not symmetrical. The leg opening 34, 134 is set forward so that the ratio of the side edge of the unfolded back waist portion is at least 1.2 times the length of the front waist side edge.
Referring to
It should be understood that the body panels 4, 6, 104, 106 can be made of a single layer or substrate of non-woven material, a bi-layer substrate made of non-woven materials without an elastic core, or more than two layers or substrates. Of course, it should be understood that other knitted or woven fabrics, non-woven fabrics, elastomeric materials, polymer films, laminates and the like can be used to form one or more of the body panel layers. The term “non-woven” web or material, as used herein, means a web having a structure of individual fibers or filaments that are interlaid, but not in an identifiable manner and without the aid of textile weaving or knitting, as in a knitted or woven fabric.
In one embodiment, the front and rear body panel material can be secured to the elastic core, such as an elastomeric layer or elastic strands or ribbons, which have been elongated and retracted, such that the material is gathered when the elastic element(s) are relaxed. Alternatively, the material can be gathered and laminated to non-elongated elastic elements. In one embodiment, the body panel 4, 6, 104, 106 includes a gathered elastic laminate made from non-woven base sheets bonded with elongated elastic elements sandwiched therebetween.
In various embodiments, the body panel material may be substantially permeable to air or substantially impermeable to air. The body panel material also may be substantially liquid-permeable or substantially liquid-impermeable. In one embodiment, the back sheet of the body panel material includes at least one layer which is a moisture proof barrier material, but desirably comprises a material which is configured to be substantially impermeable to liquids. The barrier material protects the user in containing waste and keeps waste contained in the disposal process. For example, a typical back sheet can be manufactured from a thin plastic film, or other flexible, substantially liquid-impermeable material. The back sheet prevents the exudates contained in absorbent insert from wetting articles, such as bed sheets and over garments.
Alternative constructions of the back sheet may comprise a woven or non-woven fibrous web layer which has been totally or partially constructed or treated to impart the desired levels of liquid impermeability to selected regions that are adjacent or proximate to the absorbent insert. For example, the back sheet may include a gas-permeable, non-woven fabric layer laminated to an appointed facing surface of a polymer film layer that may or may not be gas-permeable. In particular arrangements, a substantially liquid impermeable, vapor permeable back sheet layer may be a composite material which includes a vapor permeable film layer adhesively laminated to a spunbond lawyer. One suitable vapor permeable film layer can be obtained from redegar Film Products, under the tradename EXAIRE. The film layer can include 48-60 weight percent (wt %) linear low density polyethylene and 38-50 wt % calcium carbonate particulates that may be uniformly dispersed and extruded into the film layer. The stretch film layer can have a thickness of about 0.7 mil (about 0.018 mm) and a basis weight of 16-22 grams per square meter (g/m2). The spunbond layer can adhesively laminated to the film layer, and can have a basis weight of about 27 g/m2. The spunbond layer can made using conventional spunbond technology, and can include filaments of polypropylene having a fiber denier of 1.5-3 dpf. The vapor-permeable film layer may be adhered to the spunbond layer using a pressure sensitive, hot melt adhesive at an add-on rate of abut 1.6 g/m, and the adhesive can be deposited in the form of a pattern of adhesive swirls or a random fine fiber spray. As mentioned, the back sheet may include a micro-porous, “breathable” material which permits gases, such as water vapor, to escape from the absorbent body while substantially preventing liquid exudates from passing through the back sheet. For example, the breathable back sheet may be composed of a microporous polymer film or a non-woven fabric that has been coated or otherwise modified to impart a desired level of liquid impermeability. Another example of a suitable microporous film can be a PMP-1 material, which is available from Mitsuit Toatsu Chemicals, Inc., a company having offices in Tokyo, Japan; or an XKO-8044 polyoefin film available from 3 M Company of Minneapolis, Minn.
In particular arrangements, the body panel material may be substantially nonelastomeric. In other aspects, the body panels can include an elastomeric material that is elastomerically stretchable at least along one or both of the lateral article widths and/or one or more of the longitudinal article length. Examples of such elastomeric composite materials can include a continuous filament stretch bonded laminate (CFSBL), a vertical filament laminate (VFL), neck-bonded-laminate (NBL), a stretch-bonded-laminate (SBL), a necked-stretch bonded laminate (NSBL) or a necked-thermal laminate, or the like, as well as combinations thereof. Exemplary CFSBL, NBL, SBL, and NSBL materials are described in U.S. Pat. Nos. 5,226,992, 4,981,747, 4,965,122, 5,336,545, 5,385,775, 5,414,470, 4,720,415, 4,789,699, 4,781,966, 4,657,802, 4,652,487, 4,655,760, 5,116,662 and 5,114,781, and 6,323,389, all of which are hereby incorporated herein by reference. Exemplary VFL materials are described in U.S. Provisional Patent Application Ser. No. 60/204,307, filed May 15, 2000 and entitled “Method and Apparatus for Producing Laminated Articles,” and PCT application WO 01/88245 A2, both assigned to Kimberly-Clark Worldwide, Inc., the Assignee of the present application, with the entire disclosures of both being hereby incorporated herein by reference. Such laminates can provide an improved combination of cloth-like feel and elastomeric stretchability. The body panels 4, 6, 104, 106 can be composed of materials that are elastic or elastomeric and exhibit biaxial stretch characteristics or lateral/longitudinal stretch characteristics, or which are extensible composites. Additional waist and leg elastic elements can be added to, but are not necessarily required by, the body panels 4, 6, 104, 106.
In one embodiment, the body panel material is extensible but not elasticized. For example, the body panel can be made of a film or non-woven that is attached, by way of adhesives or thermal bonding, to an extensible non-woven material. Alternatively, the body panel can be made of a low modulus film such as Ethylene Methyl acrylate (EMA).
It should be understood that, in one embodiment, the entirety of the body panels 4, 6, 104, 106, the extension fold, 16, 116 and the crotch portion 124 of chassis 108, can be elasticized, such that the entirety of each of the body panels can elongate and conform to the body of the user without any substantial spacing between the body panel and the user's body, and without the attendant bulkiness of a non-elasticized material.
In one embodiment, the body panels are breathable, cloth-like, multi-directional non-woven laminates with stretch or extensible properties. In one embodiment, the non-woven layers are pre-necked, for example between about 10% and about 80%, in the longitudinal direction, which provides extensibility in the longitudinal direction with minimal force.
In one embodiment, the body chassis member 8, 108 are made of non-woven laminates of two layers of longitudinally extensible 0.60 osy polypropylene spunbond material with elongated strands of Lycra® elastic sandwiched between the spunbond layers and thereafter adhesively bonded. In particular, the body panel material is necked in the cross direction. As used herein, the term “necked,” and variations thereof, refers to any material that has been constricted in at least one dimension by applying a tensioning force in a direction that is perpendicular to the desired direction of neck-down. Processes that may be used to constrict a material in such a manner include, for example and without limitation, drawing processes. The elastics are then elongated in the direction 502 and secured to the body panel material. The elastics are then allowed to retract so as to gather the necked spunbond material in the direction 502 thereby creating an elastically gathered non-woven body panel with longitudinal extensibility. The term “gather,” and variations thereof, as used herein means puckered, or contracted into folds or wrinkles, which should be understood as including micro-pleats.
In this way, the rear body panel 6, 106 and extension fold 16, 116 can be elongated in both the direction 500 and the direction 502 to conform to the body of the user when the disposable article is applied thereto. In particular, as the user pulls the garment up over their hips, the non-woven laminate body panels stretch in the lateral direction while the leg regions of the front and rear body panels conform to the crotch and body lines of the user. At the same time, the body panel material extends in the longitudinal direction to conform to the buttocks and stomach of the user. The extension fold 16, 116 is folded inwardly to provide a secure fit to the user. The extension fold 16, 116 may be secured to the body facing surface of the rear body panel using the extension fold fastener 58, whether relatively permanent or adjustable. It should be understood that the fastening systems includes use of adhesives, sealants, or equivalent products that can be used to secure the extension fold, 16, 116 to the body side surface of the rear body panel 6, 106. The extensibility of the body panels 4, 6, 104, 106 follows the natural curvature of user's body to provide conformance thereto. As the body panel extends in the longitudinal machine direction 500, the spacing between the laterally extending elastic elements, incorporated in one embodiment, will increase.
In one embodiment, the body chassis non-woven material is preferably substantially hydrophobic, which may optionally be treated with a surfactant or otherwise processed to impart a desired level of wettability and hydrophilicity. In one particular embodiment of the invention, the body panel is a non-woven, wire-weave spunbond polypropylene fabric composed of about 1.6 denier fibers formed into a web having a basis weight of about 0.6 osy. One suitable non-woven material is the Corinth 0.60 osy, 1.6 dpf wireweave, nonwettable Metallocene (EXXON ACHIEVE 2854 PP) spunbond material manufactured by Kimberly-Clark Corporation, the assignee of the present application.
In one embodiment, the crotch portion of the various undergarments connecting the front and rear body panels 4, 6, 104, 106, whether integrally formed or separately connected with an absorbent insert, can be folded such that the side edges 30, 32, 130, 132 of the front and rear body panels 4, 6, 104, 106 are aligned, whereinafter they can be fixedly secured at a seam to form the leg opening 34, 134. The seam can be formed by bonding, sewing or otherwise attaching the side edges. Alternatively, the product can remain “open,” wherein the body panels are releasably secured with one or more garment closure fasteners as explained below.
In one embodiment, extension fold fasteners 58 are releasably secured between the extension fold 16 and the first portion 21 of the body panel to allow the length of the undergarment to be adjusted for a customized fit. For example, in one embodiment, extension fold fasteners 58 are preferably attached to the garment side surface 12 of the extension fold 16, 116 and are releasably secured to the body side surface 10 of the first portion 21. Alternatively, the extension fold fasteners 58 are attached to the first portion and releasably engage the extension fold 16. In one embodiment, a two piece extension fold fastening system can be used where at least one element is secured to the extension fold 16 and at least one mating element is secured to the first portion 21 in a manner such that the elements engage one another to produce a side edge 17 for the pocket when the extension fold is folded onto the body side surface 10 of the first portion 21.
In one embodiment, shown in
In an alternative embodiment, shown in
In either embodiment, the garment closure fasteners members 40, 42 engage the front body panel 4, 104. In one embodiment, the garment fastener members 40, 42 are configured as a hook and loop fastener. The garment closure fastener members 40, 42 can releasably engage a landing material (not shown), or the body panel material itself. Of course, it should be understood that the garment fastener members can be any structure configured to secure one member to another, and can include without limitation adhesives, buttons, pins, snaps, electrostatic fields, magnetic fields, mechanical fasteners and other known structures.
Referring to the embodiments of
In one embodiment, the absorbent insert 50 includes a substantially liquid permeable top sheet, or liner, and a substantially liquid impermeable back sheet. A retention portion 70 is disposed or sandwiched between the top sheet and the back sheet, which are connected. The top sheet, back sheet and other components of the absorbent insert can be joined for example with adhesive bonds, sonic bonds, thermal bonds, pressure bonds, pinning, stitching or any other attachment techniques known in the art, as well as combinations thereof. For example, a uniform continuous layer of adhesive, a patterned layer of adhesive, a sprayed pattern of adhesive or any array of lines, swirls or spots of construction bonds may be used to join the top sheet and back sheet, or any of the other components described herein.
Referring to
Additional layers, including for example, a liquid acquisition and distribution layer also referred to as a surge or transfer layer, are also preferably incorporated into the absorbent insert. In one embodiment, the transfer layer does not run the entire length of the absorbent insert and is shorter than the retention portion.
The retention portion 70 is made of an absorbent material, which can be any material that tends to swell or expand as it absorbs exudates, including various liquids and/or fluids excreted or exuded by the user. For example, the absorbent material can be made of airformed, airlaid and/or wetlaid composites of fibers and high absorbency materials, referred to as superabsorbents. Superabsorbents typically are made of polyacrylic acids, such as FAVOR 880 available from Stockhausen, Inc. of Greensboro, N.C. The fibers can be fluff pulp materials, such as Alliance CR-1654, or any combination of crosslinked pulps, hardwood, softwood, and synthetic fibers. Airlaid and wetlaid structures typically include binding agents, which are used to stabilize the structure. In addition, various foams, absorbent films, and superabsorbent fabrics can be used as an absorbent material. Various acceptable absorbent materials are disclosed in U.S. Pat. Nos. 5,147,343 for Absorbent Products Containing Hydrogels With Ability To Swell Against Pressure, 5,601,542 for Absorbent Composite, and 5,651,862 for Wet Formed Absorbent Composite, all of which are hereby incorporated herein by reference. Furthermore, the proportion of high-absorbency particles can range from about 0 to about 100%, and the proportion of fibrous material from about 0 to about 100%. Additionally, high absorbency fibers can be used such as Oasis type 121 and type 122 superabsorbent fibers available from Technical Absorbent Ltd., Grimsby, Lincolnshire, United Kingdom.
The retention portion 70 preferably can be made of a single or dual layer of absorbent material. In one embodiment, the retention portion 70 has an hour-glass shape with enlarged end regions. Alternatively, the retention portion 70 is substantially rectangular. The retention portion 70 can include a folded or multi-layered configuration. The retention portion 70 can have a length substantially equal to, or slightly shorter than, the length of the absorbent insert. The absorbent insert 50 can include one or more barrier layers attached to the absorbent material. In one embodiment, an upper tissue substrate is disposed adjacent the retention portion 70. Alternatively, a lower tissue substrate can be disposed adjacent an opposite side of the retention portion, or the tissue can completely envelope the retention position 70.
A method of manufacturing a disposable article 2 includes moving the body chassis member 8 in the lateral direction 502 and attaching elastic elements 140. An extension fold fastener 58 is applied to the body side surface 10 of the first portion 21 or the garment side surface, after folding, of the extension fold 16, 116. In one embodiment, extension fold fasteners 58 would be applied to both the body side surface 10 of portion 21 and the garment side surface 12 of the extension fold. The extension fold fasteners 58 are applied near or adjacent to the side edges 32 of the second rear body panel 6. Two extension fold fasteners 58 can be applied to each disposable article 2. A slip cut module as disclosed in U.S. Pat. No. 6,599,384 issued to Milner et al., entitled “A Method of Separating and Placing Discrete Elements,” the entire disclosure of which is hereby incorporated herein by reference, may be used to incrementally apply the fasteners.
The free edge 19 of the extension fold 16 is folded using a folding board as described in U.S. Pat. No. 1,046,325 issued to Normand entitled “Paper-Folding Apparatus.,” the entire disclosure of which is hereby incorporated herein by reference. The fold line 17 is set using a simple set of nip rollers over the fold line. The nip rollers may also extend over the free edge 19 and engage the extension fold fasteners 58. An absorbent insert 50 is applied and connected to the chassis member 8 before or after the operation. At least one pair of garment closure fasteners 40, 42 is applied to the rear body panel 6 in a fashion such that at least part of the garment closure fastener 40, 42 is attached to the extension fold on the body facing surface 10 and to the portion 23 on the body side surface 11. The crotch portion is folded such that the front body panel 4 is disposed adjacent to the rear body panel 6, with side edges 30 being aligned with side edges 31. A lateral crotch fold line is generated by matching up the side edge to form leg openings. Nip rollers are used to engage the garment fastener 40, 42. In an alternate embodiment the garment closing fastener 40, 42 may be replaced with a permanent bond using adhesive, pressure and/or heat seal or sonic bonding that is applied after generating the crotch fold. It should be understood that the front body panel can also have an extension fold as herein described.
Although the present invention has been described with reference to preferred embodiments, those skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the invention. As such, it is intended that the foregoing detailed description be regarded as illustrative rather than limiting and that it is the appended claims, including all equivalents thereof, which are intended to define the scope of the invention.
