Process for producing embossed multiply cellulosic fibrous structure having selective bond sites

Abstract
An embossed multiple ply paper product and process for producing such product displaying aesthetically pleasing decorative attributes and exhibiting functional characteristics of softness, absorbency, and drape. The decorative attributes comprise embossed patterns of indicia displaying a high quality cloth-like appearance for a softer, more quilted look. The plies are joined in a face-to-face arrangement by selective bonds which are limited to the indicia, in order to produce more permanent decorative figures that inhibit dissipation caused by compressive forces, humidity, absorption, etc.
Description




FIELD OF THE INVENTION




The present invention relates to multiple ply cellulosic fibrous structures, particularly embossed multiple ply cellulosic fibrous structures and the process for producing such structures.




BACKGROUND OF THE INVENTION




Cellulosic fibrous structures are a staple of everyday life. Cellulosic fibrous structures are used as consumer products for paper towels, toilet tissue, facial tissue, napkins and the like. The large demand for such paper products has created a demand for improved versions of the products and the methods of their manufacture.




Multiple ply cellulosic fibrous structures are very well known in the art of consumer products. Such products are cellulosic fibrous structures having more than one, typically two, plies superimposed in face-to-face relationship to form a laminate. It is known in the art to emboss sheets comprising multiple plies of tissue for aesthetic purposes and to maintain the plies in face-to-face relation during use. In addition embossing can increase the surface area of the plies thereby enhancing their bulk and water holding capacity.




During the embossing process, the plies are fed through a nip formed between juxtaposed axially parallel rolls. Embossment knobs on these rolls compress like regions of each ply into engagement and contacting relationship with the opposing ply. The compressed regions of the plies produce an aesthetic pattern and provide a means for joining and maintaining the plies in face-to-face contacting relationship.




Embossing is typically performed by one of two processes, knob-to-knob embossing or nested embossing. Knob-to-knob embossing consists of axially parallel rolls juxtaposed to form a nip between the knobs on opposing rolls. Nested embossing consists of embossment knobs of one roll meshed between the embossment knobs of the other roll. Examples of knob-to-knob embossing and nested embossing are illustrated in the prior art by U.S. Pat. No. 3,414,459 issued Dec. 3, 1968 to Wells and commonly assigned; U.S. Pat. No. 3,547,723 issued Dec. 15, 1970 to Gresham; U.S. Pat. No. 3,556,907 issued Jan. 19, 1971 to Nystrand; U.S. Pat. No. 3,708,366 issued Jan. 2, 1973 to Donnelly; U.S. Pat. No. 3,738,905 issued Jun. 12, 1973 to Thomas; U.S. Pat. No. 3,867,225 issued Feb. 18, 1975 to Nystrand and U.S. Pat. No. 4,483,728 issued Nov. 20, 1984 to Bauernfeind.




Knob to knob embossing produces a cellulosic fibrous structure composed of pillowed regions which enhance the thickness of the product. However, the pillows have a tendency to collapse under pressure due to lack of support. Consequently, the thickness benefit is typically lost during the balance of the converting operation and subsequent packaging, diminishing the quilted appearance sought by embossing.




Nested embossing has proven to be the preferred process for producing products exhibiting a softer more quilted appearance that is maintained throughout the balance of the converting process including packaging. With nested embossing, one ply has a male pattern, while the other ply has a female pattern. As the two plies travel through the nip of the embossment rolls, the patterns are meshed together. Nested embossing aligns the knob crests on the male embossment roll with the low areas on the female embossment roll. As a result, the embossed sites produced on one ply provide support for the embossed sites on the other ply.




The lamination point at the nip between nested embossment rolls is typically eliminated, since the knobs on the nested embossment rolls do not touch. This necessitates the addition of a marrying roll to apply pressure for lamination. Typical marrying rolls are solid resulting in the lamination of every potential laminating point as shown in U.S. Pat. No. 3,867,225 issued Feb. 18, 1975 to Nystrand.




The nested embossment rolls may be designed such that the knobs on one roll contact the periphery of the other embossing roll providing a lamination point, thereby eliminating the need for a marrying roll. Such nested embossing arrangement is shown in U.S. Pat. No. 5,468,323 issued Nov. 21, 1995 to McNeil. This arrangement also provides a means for improving the bond strength between the plies by enabling a glue applicator roll to be used in conjunction with each of the embossment rolls providing an adhesive joint at each of the embossed sites.




Consumer testing of products having embossed cellulosic fibrous structures have determined that a softer more quilted appearance is desired. Consumers desire products having relatively high caliper with aesthetically pleasing decorative patterns exhibiting a high quality cloth-like appearance. Such attributes must be provided without sacrificing the products' other desired qualities of softness, absorbency, drape (limpness) and bond strength between the plies.




Different attempts have been made in the art to produce paper products exhibiting superior functional properties as well as aesthetically pleasing decorative qualities. The present invention provides an embossed multiple ply tissue where the embossment pattern includes a plurality of indicia comprising aesthetically pleasing decorative images. The bonds between the plies are limited to the embossed indicia.




For the present invention, the multiple plies are selectively bonded at all or less than all of the indicia by adhesive or high pressure embossing. High pressure embossing selective indicia prevents separation of the multiply product during use and induces a glassine appearance that improves the decorative nature of the product.




SUMMARY OF THE INVENTION




The present invention comprises an embossed multiple ply tissue product wherein the embossment pattern includes a plurality of indicia. The indicia comprise one or more decorative images that are aesthetically pleasing. The multiple plies of tissue are selectively bonded in a face to face relationship to prevent separation during use and provide a soft product having improved drape. In one embodiment the plies are selectively bonded by high pressure embossing selective indicia providing a glassine look which enhances the decorative nature of the product. In another embodiment, the plurality of indicia are disposed within a latticework of cells composed of rows of embossed elements.




The invention further comprises a process for producing such multiple ply cellulosic structures. The process comprises the steps of providing a first ply embosser and a second ply embosser, wherein each said first and second ply embossers comprises a pressure roll juxtaposed axially parallel to a pattern roll to form a nip therebetween. Each of the pattern rolls comprises a plurality of radially oriented embossment knobs projecting from a periphery. The embossment knobs on at least one of the pattern rolls form a plurality of indicia comprising decorative images. First and second plies of tissue are interposed between the nips of the first and second ply embossers such that the embossment patterns are compressed thereon. Subsequently, the first and second plies are joined in a face to face relationship and selectively bonded.




In one embodiment. Tee process includes a means for selectively bonding the two plies by providing a steel anvil roll juxtaposed axially parallel to one of the two pattern rolls for selectively bonding the plies via high pressure embossing.











BRIEF DESCRIPTION OF THE DRAWINGS




These and other features, aspects and advantages of the present invention will become better understood with regard to the following description, appended claims, and accompanying drawings where:





FIG. 1

is a schematic side elevational view of an apparatus used to perform nested embossing and adhesive bonding of two plies according to the present invention.





FIG. 2

is a side view of a nip formed between the two pattern rolls displayed in FIG.


1


.





FIG. 3

is a side elevational view of an apparatus used to perform nested embossing and bonding of two plies utilizing high pressure embossing according to the present invention.





FIG. 4

is a side view of a high pressure embossing nip formed between a pattern roll and the steel anvil roll displayed in FIG.


3


.





FIG. 5

is a fragmentary vertical sectional view of an embossed multiple ply paper product according to the present invention.





FIG. 6



a


is a plan view of linear flower shaped indicia and heart shaped indicia.





FIG. 6



b


is a plan view of the indicia shown in

FIG. 8



a


comprising crenulated patterns.





FIG. 7



a


is a plan view of a first ply showing flower shaped indicia arranged in a diagonal pattern.





FIG. 7



b


a plan view of a first ply showing flower shaped and heart shaped indicia arranged in a diagonal pattern.





FIG. 8



a


is a fragmentary plan view of the multiple ply paper product displaying a latticework embossment pattern on the first ply.





FIG. 8



b


is a fragmentary plan view of the multiple ply paper product displaying a latticework embossment pattern on the second ply.





FIG. 8



c


is a fragmentary plan view of the multiple ply paper product displaying the first ply embossment pattern illustrated in

FIG. 8



a


nested within the second ply embossment pattern illustrated in

FIG. 8



b.







FIG. 9

is a fragmentary plan view of a latticework embossment pattern showing apices and vertices skewed relative to CD and MD.





FIG. 10

is a plan view of the first ply showing the embossed latticework of cells having flower shaped indicia disposed therein.











DETAILED DESCRIPTION OF THE INVENTION




Definitions




As used herein the following terms have the following meanings:




“Machine direction”, designated MD, is the direction parallel to the flow of paper through the papermaking equipment.




“Cross machine direction”. designated CD, is the direction perpendicular to the machine direction in the X-Y plane.




“Embossing” refers to the process of deflecting a relatively small portion of a cellulosic fibrous structure normal to its plane and impacting the projected portion of the fibrous structure against a relatively hard surface to permanently disrupt the fiber to fiber bonds.




A “nip” is a loading plane connecting the centers of two parallel axes.




“Nonrandom,” refers to a predictable disposition and may occur as a result of known and predetermined features of the manufacturing process.




“Repeating” means the pattern is formed more than once.




“Discrete,” means the adjacent embossed sites are not contiguous.




“Essentially continuous” refers to a region extending substantially throughout the fibrous structure in one or both of its principal directions.




“Crenulated emboss elements” are emboss elements formed into crenels and merlons such that the side of the emboss element would resemble the top of a castle wall having spaced projections which are merlons and depressions therebetween which are crenels.




An “indicia” is a distinctive marking, exhibiting a decorative aspect.




A “latticework” is a pattern of small intersecting diagonal or zigzag segments or angles.




A “cell” is a unit of a two-dimensional array comprising a group of individual enclosures.




The specification contains a detailed description of (1) the embossing laminating system of the present invention and (2) the finished paper product of the present invention.




(1) The Embossing Laminating Equipment




Illustrated in

FIG. 1

is an embossing and laminating system used to manufacture cellulosic fibrous structures for consumer paper products. The system depicted performs a process referred to in the prior art as nested embossing. In nested embossing two plies


20


and


22


are embossed between mated pressure rolls


30


and


32


and likewise mated pattern rolls


34


and


36


. The pressure rolls


30


and


32


and pattern rolls


34


and


36


are juxtaposed with parallel axes to form three nips, a first nip between the first pressure roll


30


and the first pattern roll


34


, a second nip between the second pressure roll


32


and the second pattern roll


36


, and a third nip between the first and second pattern rolls


34


and


36


. Although the present invention is equally applicable to all types of consumer paper products such as paper towels, toilet tissue, facial tissue, napkins, and the like, the embossing process used to produce the multiple ply tissue


24


as well as the multiple ply tissue


24


produced thereby are representative of toilet tissue.




Pattern rolls


34


and


36


have knobs


33


, as shown in

FIG. 2

, which extend radially outwardly and contact the periphery of the respective pressure rolls


30


or


32


at the respective nips. Each ply


20


or


22


to be joined into the resulting multiple ply cellulosic fibrous structure


24


is fed through one of the nips between the pattern tolls


34


or


36


and the respective pressure roll


30


or


32


. Each ply


20


or


22


is embossed in the nip by the knobs


33


of the respective pattern roll


34


or


36


.




For the present invention, the embossment pattern disposed on one or both of the pattern rolls


34


,


36


includes a plurality of indicia comprising decorative images such as flowers and heart shapes. In an alternate embodiment the embossment pattern includes a latticework of cells having indicia disposed therein on one or both of the pattern rolls


34


.


36


. In still another embodiment, the embossment pattern on the first pattern roll includes a latticework of cells comprising n rows of embossment elements forming cells with indicia disposed therein, while the second pattern roll


36


includes a latticework of cells comprising n+1 arcuate rows of embossment elements.




After embossing one of the plies


20


or


22


may have adhesive applied to the resulting crests


27


of the embossed sites


26


by an adhesive applicator roll


37


. The adhesive applicator roll


37


may be utilized in conjunction with either ply


20


or


22


. In this process, adhesive is applied to only the crests


27


of the embossed sites


26


of ply


20


or


22


since the crests


27


of the embossed sites


26


are the only portions of the ply


20


or


22


contacting the adhesive applicator roll


37


. For the present invention, the adhesive applicator roll


37


is synchronized with one of the two pattern rolls


34


,


36


to apply adhesive to the selective embossed sites comprising indicia in order to limit the bonds between the two plies to the indicia.




The plies


20


and


22


are then fed through the nip between the first and second pattern rolls


34


and


36


. The patterns on each of the two rolls


34


,


36


are arranged such that each embossed indicia on one or both rolls mesh with a nonembossed region on the opposing ply at the nip formed between the two rolls


34


,


36


. For pattern rolls comprising n and n+1 rows of embossment elements disposed thereon, the n rows of embossment elements on the first pattern roll


34


mesh within the n+1 rows of embossment elements on the second pattern roll


36


at the nip.




As shown in FIG.


2


. Tee knobs


33


on each respective pattern roll


34


,


36


approach the periphery


31


of the neighboring pattern roll without making contact therewith. In this nip the plies


20


and


22


are juxtaposed in a face-to-face relationship with the crests


27


of the embossed sites


26


on one ply


20


,


22


registered with nonembossed rregions


25


on the other ply


20


,


22


.




The two plies


20


and


22


are then fed through a nip between the pattern roll


34


associated with the adhesive applicator roll


37


and a marrying roll


38


, to insure the crests of the first ply


20


embossed sites


26


having the adhesive applied from the adhesive applicator roll


37


are bonded to the nonembossed regions


25


of the second ply


22


. Contact between the pattern roll


34


and the marrying roll


38


is limited to the embossed sites


26


of the first ply


20


.




In an alternate embodiment (not shown), the pattern rolls


34


,


36


can be designed such that the knobs


33


on each of the rolls contact the periphery of the opposing roll bonding the plies


20


,


22


at the nip which is formed therebetween, thus eliminating the need for the marrying roll


38


. Such arrangement is disclosed in commonly assigned U.S. Pat. No. 5,468,323 issued Nov. 21, 1995 to McNeil and is incorporated herein by reference. For such an arrangement an adhesive applicator roll


37


may be used in conjunction with each of the pattern rolls so that lamination points may be formed between the plies at each of the knobs


33


on the two pattern rolls


34


,


36


.




In another embodiment, the two plies


20


,


22


are bonded by high pressure embossing. As shown in FIG.


3


. Tee adhesive applicator roll


37


is eliminated and the first pattern roll


34


is paired with a steel anvil roll


50


in place of the marrying roll


38


. Once the two plies pass through the nip between the first and second pattern rolls


34


,


36


and are thereby juxtaposed in a face to face relationship, the plies


20


,


22


are made to pass through the nip between the first pattern roll


34


and the steel anvil roll


50


. As shown in

FIG. 4

, the knobs


33


on the first pattern roll


34


act in conjunction with land areas


52


on the steel anvil roll


50


to apply high unit pressures to the surfaces of the two plies


20


,


22


disposed therebetween. The land areas


52


on the steel anvil roll have sizes which correspond to and slightly exceed the dimension associated with the interfacing knob portions of the mating pattern roll


34


where the bonds are to occur.




For the present invention, multiply products joined by high pressure embossing are selectively bonded at the indicia. For tissues having more than one type indicia, the selective bonds may be limited to one indicia type such that the glassine look further distinguishes the bonded indicia from the nonbonded indicia, thus further enhancing the decorative quality of the tissue.




High pressure embossing bonds the two plies by interlocking the fibers and reducing them to plastic. The resulting bonds exhibit a glassine appearance which is aesthetically pleasing. Bonding via high pressure embossing is disclosed in U.S. Pat. No. 3,323,983 issued Sep. 8, 1964 to Palmer and is incorporated herein by reference.




(2) The Embossed Paper Product




The present invention provides a tissue paper product having functional characteristics of softness, absorbency, and drape as well as exhibiting aesthetically pleasing decorative attributes. Such aesthetically pleasing features include patterns of indicia displaying a high quality cloth-like appearance and particularly, a softer, more quilted look.




For the present invention, the embossment patterns on the multiply tissue include indicia comprising decorative images. The plies are joined in a face-to-face arrangement with the bond locations being limited to the indicia. Bonding the plies at the indicia produces a more permanent decorative figure that inhibits dissipation caused by compressive forces, humidity, and absorption. In addition, by limiting the bond sites to the indicia a softer tissue with improved drape is produced.




Referring to

FIG. 5

, the cellulosic fibrous structure


20


according to the present invention comprises two plies


20


and


22


joined in face-to-face relation. Each of the plies


20


and


22


has two distinct zones, an essentially continuous nonembossed region


25


, and discrete embossed sites


26


projecting generally outward therefrom and preferably orthogonal thereto. It is to be understood that each ply


20


or


22


may be directly joined to the opposite ply


22


or


20


, or, may be connected through an intermediate layer (not shown) interposed between the plies


20


and


22


.




For the present invention, the embossment pattern comprises a plurality of one or more types of indicia distributed throughout one or both plies in a nonrandom manner. Although the indicia may comprise any decorative image, for the present invention, the indicia include flowers


92


and heart shapes


94


.




The indicia


90


may comprise a linear pattern as shown in

FIG. 6



a,


or a crenulated pattern as shown in

FIG. 6



b.


The linear pattern comprises an essentially continuous embossed design while the crenulated pattern comprises crenulated emboss elements. The crenulated emboss elements add bulk to the paper substrate and enhance the definition and retention of the embossed pattern. Crenulated decorative images are disclosed in U.S. Pat. No. 5,620,776 issued Apr. 15, 1997 to Schulz.




In one embodiment shown in

FIG. 7



a,


the first ply


20


comprises indicia


90


disposed in a nonrandom pattern running diagonal to both MD and CD. The pattern alternates between a diagonal nonembossed row to a diagonal row comprising nonembossed regions and regions having embossed flower shaped indicia disposed therein.




In an alternate embodiment shown in

FIG. 7



b,


the embossed pattern comprises two indicia


90


comprising a flower


92


and a heart


94


disposed in a nonrandom pattern running diagonal to both MD and CD. For this embodiment, every other diagonal row in the pattern shifts from having all heart shaped indicia to alternating heart and flower shaped indicia.




The distal end of each embossed site


26


on each of the two plies


20


,


22


projects towards and contacts the nonembossed region


25


of the opposite ply. Bonding the plies at the embossed sites


26


improves the appearance of the tissue by providing a more permanent structure that inhibits subsequent dissipation caused by compressive forces, humidity, and absorption. The two plies


20


,


22


may be bonded at every embossed site


26


or at selective discrete sites depending on the process.




The number of bond sites occurring between the two plies not only affects the bond strength but also the product stiffness and drape. Whether the plies


20


,


22


are joined adhesively or via high pressure embossing, the greater the bond area the stiffer the tissue. Stiffness has a direct impact on product softness and drape. Therefore, it is preferred to minimize the bond area by limiting the region bonded between the two plies


20


,


22


to selective discrete sites.




The two plies


20


,


22


may be joined at selective sites by adhesive bonds or high pressure embossments using the processes previously described. For selective adhesive bonds, the adhesive applicator roll is synchronized with selective discrete embossment locations on the mating pattern roll. Alternatively, for selective high pressure bonds, land areas are formed on the steel anvil roll matching the selective discrete embossment locations on the neighboring pattern roll. The sizes of the land areas correspond to and slightly exceed the dimensions of the embossments on the pattern roll where the selective bonds are desired.




As previously described, high pressure embossing produces a glassine bond site that enhances the decorative quality of the tissue. Therefore, for the present invention, it is preferred to form the selective bond sites via high pressure embossing. Particularly, it is preferred to bond the two plies by high pressure embossing such that the area bonded between the two plies


20


,


22


comprises about 0.2% to about 5% of the interfacing surface area between the two plies


20


,


22


.




Although any pattern of embossment elements


26


may be selected for the selective bond sites, it is preferred to choose a nonrandom pattern of embossment elements providing adequate bond strength using minimal surface area. For the present invention, the first ply


20


represents the outside ply of a multiple ply tissue which is typically exposed to a consumer during use. In order to further enhance the decorative quality of the product, it is preferred to limit the selective bond sites to the indicia


90


embossed on the first ply


20


. For embodiments comprising more than one type of indicia, such as a flower


92


and a heart shape


94


, it is preferred to limit the selective bond sites to one type of indicia


90


embossed on the first ply


20


.




The embossment pattern for the present invention may include a latticework of cells.

FIG. 8



a


depicts a plan view of the latticework of cells embossed on the first ply


20


and

FIG. 8



b


depicts a plan view of the latticework of cells embossed on the second ply


22


. Although the latticework of cells on each of the two plies are composed of arcuate rows of discrete embossment elements


26


forming apices


62


and vertices


64


, the latticework of cells may comprise other configurations having rectilinear or serpentine rows of embossment elements.




As shown in

FIGS. 8



a


and


8




b,


the latticework of cells on the first ply


20


are defined by single arcuate rows


66


of embossment elements


26


while the cells on the second ply


22


are defined by two rows


67


of embossment elements


26


. Once the two plies


20


,


22


are joined together in a face to face relationship, the single arcuate rows


66


on the first ply become nested within the two rows


67


on the second ply. This nested arrangement, illustrated in

FIG. 8



c,


provides a softer, more quilted look.




Although the latticework of cells for the two plies


20


,


22


depicted in

FIGS. 8



a,




8




b,


and


8




c


comprises a first ply


20


, single row


66


latticework of cells nested within a second ply


22


, double row


67


latticework of cells, it is apparent that other nested latticework arrangements would provide similar or improved cloth like appearances. For the present invention, it is preferred to nest every row


66


of embossment elements


26


on the first ply


20


between two rows


67


of embossment elements


26


on the second ply. In other words, if the latticework of cells on the first ply


20


comprises n rows of embossment elements


26


then it is preferred that the latticework of cells on the second ply


22


comprises n+1 rows of embossment elements


26


(where n is an integer 1,2,3 . . . etc.).




For the nested arrangement illustrated in

FIG. 8



c,


each of the embossment elements


26


forming the n rows


66


on the first ply can be radially aligned or nonaligned with the embossment elements


26


forming the n+1 rows


67


on the second ply. In addition, for the nested arrangement, each of the rows


66


of embossment elements


26


on the first ply can be arranged equidistant or nonequidistant from the adjacent rows


67


of embossment elements on the second ply


22


.




As shown in

FIGS. 8



a


and


8




b,


the rows


66


making up the latticework of cells are disposed in a repeating array extending transversely in the CD. The latticework is typically arranged such that the apices


62


and the vertices


64


are aligned parallel to both the MD and the CD. In an alternate embodiment, the latticework of cells are offset in the CD. As illustrated in

FIG. 9

, the cells are arranged such that the vertices and apices are skewed at an angle


80


which is offset from the CD. Such skewed angle may range from about 4° to about 10°.




As previously explained, for the present invention, the first ply


20


represents the outside ply of a multiple ply tissue which is typically exposed to a consumer during use. In order to further enhance the decorative quality of the product, indicia


90


, illustrated in

FIG. 8



a


may be disposed within the latticework of cells


68


on the first ply


20


in a nonrandom repeating manner. The space within the latticework of cells on the first ply


20


for such indicia


90


is made available by limiting the number of rows of embossment elements


26


.

FIG. 10

shows flower shaped indicia disposed within the latticework of cells in a nonrandom diagonal pattern.




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



Claims
  • 1. A process for embossing and bonding two tissue plies comprising the steps of:providing a first ply embosser and a second ply embosser, each said first ply embosser and said second ply embosser comprising a pressure roll juxtaposed axially parallel to a pattern roll to form a nip therebetween, each of said rolls having an axis with a center therein, said axes of said rolls defining a loading plane connecting the centers of said axes, wherein each of said pattern rolls comprises a periphery and a plurality of radially oriented embossment knobs projecting from said periphery; providing one anvil roll juxtaposed axially parallel to said first ply pattern roll to form a nip there between, said anvil roll having an axis with a center therein, said axes of said anvil roll and said first ply pattern roll defining a second loading plane connecting the centers of said axes; providing a first ply of tissue paper and a second ply of tissue paper, each ply of tissue paper having opposed first and second sides separated by a thickness of said ply; introducing the first ply of tissue paper into the nip of the first ply embosser; introducing the second ply of tissue paper into the nip of the second ply embosser; rotating t he rolls of said first and said second ply embossers about said axes, whereby said first and said second plies of tissue paper are transported relative to said rolls such that said embossment knobs of said pattern rolls form a plurality of indicia, said embossment knobs of one of the pattern rolls compressing a first plurality of indicia on said first ply and said embossment knobs of the other pattern roll compressing an embossment pattern comprising a second plurality of indicia on said second ply; assembling said first ply of tissue paper and said second ply of tissue paper in a face to face relationship to form a multiple ply tissue, such that said first plurality of indicia and said second plurality of indicia are disposed relative to one another in a non-random repeating pattern, interposing said multiple ply tissue between the nip of said anvil roll and said first ply pattern roll; and transporting said multiple ply tissue relative to said anvil roll and said first ply pattern roll where a bond is formed between said first ply and said second ply of said multiple ply tissue, wherein said first ply and said second ply are bonded in a face-to-face relationship at said first plurality of indicia and not bonded at said second plurality of indicia.
  • 2. The process of claim 1, wherein said embossment knobs on at least one said pattern roll form a lattice work of cells, said embossment knobs compress an embossment pattern comprising lattice work of cells on said first or said second ply of tissue interposed between the nip of at least one said first or said second ply embossers.
  • 3. The process of claim 2, wherein said plurality of indicia is disposed within said lattice work of cells.
  • 4. The process of claim 1, wherein said plurality of indicia comprises two or more decorative patterns.
  • 5. The process of claim 1, wherein said anvil roll comprises a periphery having land areas disposed thereon, the land areas interface with the embossment knobs on the first pattern roll where bonds are to occur between the two plies.
Parent Case Info

This application is a divisional of U.S. Ser. No. 09/198,679, filed Nov. 23, 1998 now U.S. Pat. No. 6,086,715.

US Referenced Citations (29)
Number Name Date Kind
3323983 Palmer et al. Jun 1967 A
3414459 Wells Dec 1968 A
3547723 Gresham Dec 1970 A
3556907 Nystrand Jan 1971 A
3708366 Donnelly Jan 1973 A
3738905 Thomas Jun 1973 A
3867225 Nystrand Feb 1975 A
3961119 Thomas Jun 1976 A
4284465 Walbrun Aug 1981 A
4320162 Schulz Mar 1982 A
4325773 Schulz Apr 1982 A
4326002 Schulz Apr 1982 A
4376671 Schulz Mar 1983 A
4483728 Bauernfeind Nov 1984 A
4543142 Kuepper et al. Sep 1985 A
4759967 Bauernfeind Jul 1988 A
4978565 Pigneul et al. Dec 1990 A
5269983 Schulz Dec 1993 A
5443889 Ruppel et al. Aug 1995 A
5468323 McNeil Nov 1995 A
5573830 Schulz Nov 1996 A
5620776 Schulz Apr 1997 A
5727458 Schulz Mar 1998 A
5736223 Laurent Apr 1998 A
5804036 Phan et al. Sep 1998 A
5820730 Phan et al. Oct 1998 A
5846636 Ruppel et al. Dec 1998 A
5906711 Barnholtz May 1999 A
6277226 Schulz Aug 2001 B1
Foreign Referenced Citations (3)
Number Date Country
WO 9535205 Dec 1995 FR
WO 9618771 Jun 1996 FR
WO 9727365 Jul 1997 FR