EP1455014B1 - Saugfähiges geprägtes Papierprodukt - Google Patents

Saugfähiges geprägtes Papierprodukt Download PDF

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Publication number
EP1455014B1
EP1455014B1 EP03005090A EP03005090A EP1455014B1 EP 1455014 B1 EP1455014 B1 EP 1455014B1 EP 03005090 A EP03005090 A EP 03005090A EP 03005090 A EP03005090 A EP 03005090A EP 1455014 B1 EP1455014 B1 EP 1455014B1
Authority
EP
European Patent Office
Prior art keywords
embossed
density
protuberances
product according
protrusions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03005090A
Other languages
English (en)
French (fr)
Other versions
EP1455014A1 (de
Inventor
Michel Basler
Benoît Hoeft
Sébastien Jeannot
Nicolas Pommier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Essity Operations France SAS
Original Assignee
Georgia Pacific France SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Georgia Pacific France SAS filed Critical Georgia Pacific France SAS
Priority to EP03005090A priority Critical patent/EP1455014B1/de
Priority to ES03005090T priority patent/ES2371547T3/es
Priority to AT03005090T priority patent/ATE520826T1/de
Priority to CA2458952A priority patent/CA2458952C/fr
Priority to US10/792,824 priority patent/US7494564B2/en
Publication of EP1455014A1 publication Critical patent/EP1455014A1/de
Application granted granted Critical
Publication of EP1455014B1 publication Critical patent/EP1455014B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • D21H27/40—Multi-ply at least one of the sheets being non-planar, e.g. crêped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0723—Characteristics of the rollers
    • B31F2201/0738—Cross sectional profile of the embossments
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24562—Interlaminar spaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/24992—Density or compression of components

Definitions

  • the present invention relates to the field of absorbent papers for sanitary or domestic use, and aims at a product comprising at least one embossed fold, intended for the production of toilet paper essentially but also tissues, napkins or paper towels .
  • a generally creped absorbent product of low basis weight, designated: cellulose wadding or wadded fabric.
  • cellulose wadding or wadded fabric a generally creped absorbent product, of low basis weight, designated: cellulose wadding or wadded fabric.
  • This operation consists in deforming the latter permanently between a non-deformable cylinder provided with reliefs and a counter-cylinder, for example with resilient coating.
  • protuberances are obtained on one face corresponding to cavities on the other face.
  • embossing operation is performed on paper with low humidity, that is to say in transformation. We then work a dry sheet unwound from a mother reel from the paper machine.
  • the most widespread embossing patterns consist of a repetition on a geometric basis of elementary protuberances of small cross section and simple geometric shape.
  • An example is described in the U.S. Patent 3,414,459 which is on a laminated sheet consisting of a plurality of elementary sheets, called folds, glued together.
  • the folds were embossed with a frequency of distribution and a height of the protuberances adapted to the production of water-absorbing products, paper towels for example.
  • the number of elements ranges from 5 to 30 per cm 2 .
  • the Applicant has developed, for toilet paper in particular, patterns whose number of elements is greater, ranging from 30 to 80 per cm 2 .
  • This type of embossing is usually referred to as "microgolding".
  • the relief elements forming the embossing necessarily have an elementary surface at the very low vertex, less than 1 mm 2 .
  • an aspect is obtained which mimics that of a woven product.
  • An example has been described in the patent EP 426,548 .
  • the solution presented in FR 2,728,152 allows to improve the softness of a double-folded sheet with this type of embossing, by producing a combined pattern, comprising a graphic pattern and a background pattern.
  • the first consists of protuberances whose shape is linear with a width of between 0.1 and 2 mm, and the second comprises small generally frustoconical protuberances distributed at a rate of at least 30 per cm 2 (micro-embossing). Folds are associated with the pattern of linear shape, thus limiting the extent of the surfaces bonded together and the stiffening induced.
  • the proportion of embossed surface according to the background pattern is largely the majority: 80% of the surface in practice. It is he who provides most of the functional characteristics related to embossing, namely thickness and absorption.
  • patent EP 1 073 797 discloses a sheet of absorbent paper, having a pattern consisting only of similarly sized protuberances, distributed in almost identical densities so as to obtain a homogeneous marking and a good definition of said pattern, while having characteristics of thickness and strength comparable to those of a sheet having uniform embossing.
  • the embossing pattern disclosed in this patent includes an array of cells whose interior is little or not embossed.
  • the known microgauferings have densities equal and / or substantially equal over the entire surface of the products, as illustrated for example in the document EP 1081284 .
  • an embossed product having in itself an improved relief, without its other properties being reduced or altered.
  • the improved relief is obtained essentially by means of a characteristic embossing.
  • the product according to the invention advantageously has a relatively large thickness and in no case gives an impression (neither visual nor touch) of crushing, or flattening.
  • the subject of the invention is a product made of absorbent paper, in particular cellulose wadding, comprising at least two plies at least one of which is embossed in an embossing pattern comprising protuberances with a density greater than or equal to 30 per cm 2 .
  • said embossing pattern comprises at least two juxtaposed zones whose protuberances respectively have a different density and / or a different top surface in order to obtain a relief effect on said product.
  • the ratio between the area occupied by the peaks of said protuberances and the embossed surface, that is to say occupied by one or more embossed areas of the sheet is between 1 and 60% of preferably between 7 and 45%.
  • the difference in density and / or surface area at the top of the protuberances is greater than 7 and preferably greater than 15%.
  • the top surface of the smaller protuberances is at least 0.03 mm 2 .
  • the surface at the top of the largest protuberances is at most of the order of 0.80 mm 2 .
  • the embossing pattern comprises at least a first zone whose protuberances have a first density, said zone being surrounded by at least a second zone whose protuberances have a second density greater than the first density.
  • the embossing pattern further comprises linear elements.
  • the linear elements define a second geometric network and / or aesthetic patterns.
  • the plies are assembled together by gluing.
  • the product comprises at least two embossed folds.
  • the product may comprise three plies: two embossed outer plies and a non-embossed central fold.
  • the figure 5 is a graph showing the relationship between thickness and footprint for products of different densities with identical apex surface protuberances.
  • the protuberances are elements in relief on the sheet or the ply of cellulose wadding, while the “spikes” are elements in relief. on the cylinder intended to form the protuberances on the product made of cellulose wadding.
  • microembossing usually comprises protuberances with a density greater than 30 or even 50 protuberances / cm 2 .
  • the figure 1 relates to an embossing pattern made on a product according to the invention.
  • this pattern comprises a first zone 1 provided with a micro-embossing having a first density, said first zone being surrounded by other microgaufrated zones 2, 3 having respectively a second density different from the first density and a third density that is still different.
  • the surfaces at the top of the protuberances of the juxtaposed zones may be of different values.
  • the third microgaufrage is written in diamonds.
  • embossing 1, 2, 3 are juxtaposed on at least one fold, and they make it possible to obtain a sheet with pronounced relief.
  • the “embossed surface” corresponds to the zone delimited by a line passing through the center of gravity of the protuberances forming the outer contour of the chosen zone.
  • the “number of protuberances” is equal to the number of protuberances within the zone, to which is added half the number of protuberances on the above-mentioned contour line.
  • the density is equal to the ratio of the "number of protuberances" on the “embossed surface”.
  • a “zone” comprises at least 10 protuberances aligned in at least two rows.
  • the figure 2 illustrates another embodiment of the invention according to which the embossing pattern comprises two types of micro-embossing: the first is formed of first zones 1 provided with protuberances having a first density of 61 protuberances / cm 2 and a first surface at the top of 0.23 mm 2 ; these areas are here in octagon shape.
  • second microgaufrées zones 2 Intercalated between the first zones are second microgaufrées zones 2, of square shape and whose protuberances have a second density (81 1 protuberances / cm 2 ) and a second surface at the top: 0.13 mm 2 .
  • the figure 3 shows yet another embossing pattern according to the invention.
  • the pattern represented here is composed of juxtaposed zones 3 delimited by both first linear elements 5 and second zones 2 consisting of protuberances having a high density.
  • the zones 3 comprise uniformly distributed protuberances of density less than the density of the protuberances forming the zones 2.
  • the density difference of the protuberances between the different zones is greater than 15%.
  • second linear elements 4 define, within certain zones 3, aesthetic patterns, here in the form of tulips.
  • linear elements 1,4 are not necessarily present. When present, they reinforce the relief.
  • a microembossing is performed such that the sheet has a well-visible and well-defined relief.
  • a bonding can take place to assemble the folds: preferentially the bonding is performed on all or part of the microgaufrées zones and / or the linear pattern.
  • the figure 4 illustrates a first series of tests intended to show the effect of the surface at the top (or dimension) of the pins of the cylinder on the thickness of the product obtained.
  • tests were carried out on patterns having the same depth and respectively of peak diameter dots equal to 0.4 mm and 0.6 mm.
  • On the ordinate we find thicknesses of products and on the abscissa the pin or impression left by the cylinder on the carbon paper.
  • Curve A corresponds to products formed on rolls having spikes of diameter at the apex substantially equal to 0.4 mm while curve B relates to products formed on rolls of which the pins have a diameter substantially equal to 0.6 mm.
  • the comparison of these curves shows that for the same footprint, a greater thickness of the structure is obtained when it is obtained with an engraved cylinder whose spikes have the least important surface area.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Paper (AREA)
  • Laminated Bodies (AREA)

Claims (12)

  1. Produkt aus saugfähigem Papier, insbesondere aus Zellstoffwatte, mit mindestens zwei Lagen, von denen mindestens eine gemäß einem Prägungsmotiv geprägt ist, das Vorsprünge (1, 2, 3) mit einer Dichte von größer gleich 30 pro cm2 aufweist, dadurch gekennzeichnet, dass das Prägungsmotiv mindestens zwei nebeneinander liegende Bereiche umfasst, von denen die Vorsprünge (1, 2, 3) jeweils eine verschiedene Dichte und/oder eine andere Oberfläche am Scheitel aufweisen, um eine Reliefwirkung auf dem Produkt zu erzielen.
  2. Produkt nach Anspruch 1, dadurch gekennzeichnet, dass das Verhältnis zwischen der durch die Scheitel der Vorsprünge (1, 2, 3) eingenommenen Oberfläche und der geprägten Oberfläche des Blatts zwischen 1 und 60% beträgt.
  3. Produkt nach Anspruch 2, dadurch gekennzeichnet, dass das Verhältnis zwischen der durch die Scheitel der Vorsprünge eingenommenen Oberfläche und der geprägten Oberfläche des Blatts zwischen 7 und 45% beträgt.
  4. Produkt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Unterschied der Dichte und/oder der Oberfläche am Scheitel der Vorsprünge über 7%, vorzugsweise über 15%, beträgt.
  5. Produkt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Oberfläche am Scheitel der kleinsten Vorsprünge mindestens gleich 0,03 mm2 beträgt.
  6. Produkt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Oberfläche am Scheitel der größten Vorsprünge höchstens etwa 0,80 mm2 beträgt.
  7. Produkt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Prägungsmotiv mindestens einen ersten Bereich (1) umfasst, dessen Vorsprünge eine erste Dichte aufweisen, wobei der Bereich von mindestens einem zweiten Bereich (2, 3) umgeben ist, dessen Vorsprünge eine zweite Dichte aufweisen, die größer als die erste Dichte ist.
  8. Produkt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Prägungsmotiv des Weiteren lineare Elemente (4, 5) umfasst.
  9. Produkt nach Anspruch 8, dadurch gekennzeichnet, dass die linearen Elemente (5) ein geometrisches Gitter definieren.
  10. Produkt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Lagen durch Kleben zusammengefügt sind.
  11. Produkt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es mindestens zwei geprägte Lagen umfasst.
  12. Produkt nach Anspruch 11, dadurch gekennzeichnet, dass es des Weiteren eine dritte, nicht geprägte Lage umfasst, die zwischen den beiden geprägten Lagen angeordnet ist.
EP03005090A 2003-03-07 2003-03-07 Saugfähiges geprägtes Papierprodukt Expired - Lifetime EP1455014B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP03005090A EP1455014B1 (de) 2003-03-07 2003-03-07 Saugfähiges geprägtes Papierprodukt
ES03005090T ES2371547T3 (es) 2003-03-07 2003-03-07 Producto en papel absorbente gofrado.
AT03005090T ATE520826T1 (de) 2003-03-07 2003-03-07 Saugfähiges geprägtes papierprodukt
CA2458952A CA2458952C (fr) 2003-03-07 2004-03-02 Produit en papier absorbant presentant un gaufrage ameliore
US10/792,824 US7494564B2 (en) 2003-03-07 2004-03-05 Absorbent paper product having improved embossing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03005090A EP1455014B1 (de) 2003-03-07 2003-03-07 Saugfähiges geprägtes Papierprodukt

Publications (2)

Publication Number Publication Date
EP1455014A1 EP1455014A1 (de) 2004-09-08
EP1455014B1 true EP1455014B1 (de) 2011-08-17

Family

ID=32798797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03005090A Expired - Lifetime EP1455014B1 (de) 2003-03-07 2003-03-07 Saugfähiges geprägtes Papierprodukt

Country Status (5)

Country Link
US (1) US7494564B2 (de)
EP (1) EP1455014B1 (de)
AT (1) ATE520826T1 (de)
CA (1) CA2458952C (de)
ES (1) ES2371547T3 (de)

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USD751826S1 (en) 2014-04-16 2016-03-22 Georgia-Pacific Consumer Products Lp Paper product
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FR2788066B1 (fr) * 1999-01-05 2001-02-16 Fort James France Nouveau produit en papier absorbant comprenant deux plis
ES2299237T3 (es) * 1999-08-31 2008-05-16 Georgia-Pacific France Producto de papel absorbente que comprende al menos tres pliegues y su procedimiento de fabricacion.
US6551691B1 (en) * 1999-08-31 2003-04-22 Gerogia-Pacific France Absorbent paper product of at least three plies and method of manufacture
FR2808816B1 (fr) * 2000-05-12 2003-05-30 Fort James France Produit en papier absorbant a structure dissymetrique
ATE320341T1 (de) * 2000-09-27 2006-04-15 Georgia Pacific France Verfahren zur herstellung einer mehrlagigen saugfähigen papierbahn
ES2547459T3 (es) * 2000-11-24 2015-10-06 Sca Tissue France Hoja de papel absorbente crepado, rodillo para el estampado en relieve y proceso de fabricación de dicha hoja
US7083845B2 (en) * 2001-02-23 2006-08-01 Georgia-Pacific France Sheet of absorbent creped paper, cylinder for embossing such a sheet and an embossing process
ES2287087T3 (es) * 2001-03-09 2007-12-16 Georgia-Pacific France Hoja de papel con pequeños cojines.
GB2374313B (en) * 2001-04-10 2003-06-18 Sca Hygiene Products Holding G Method and device for producing a multi-ply web of flexible material such as paper and nonwoven and multi-ply material produced by the method
DE60118322T2 (de) * 2001-06-29 2006-11-02 Georgia-Pacific France Verfahren zur Herstellung von geprägtem Papier und Prägezylinder
GB2377674B (en) * 2001-07-16 2004-05-26 Sca Hygiene Prod Gmbh Device for applying an embossing to a web of tissue paper
DE60133828T3 (de) * 2001-12-12 2011-06-22 Georgia-Pacific France Mehrlagige Bahn eines saugfähigen Papiers
ES2282221T3 (es) * 2001-12-27 2007-10-16 Georgia-Pacific France Hoja de papel gofrada.
DE60227798D1 (de) * 2002-08-22 2008-09-04 Georgia Pacific France Rolle aus Zellstoffwatteblättern und Verfahren zu ihrer Herstellung
ATE520826T1 (de) * 2003-03-07 2011-09-15 Georgia Pacific France Saugfähiges geprägtes papierprodukt
FR2860527B1 (fr) * 2003-10-02 2006-01-27 Georgia Pacific France Feuille de papier absorbant
FR2861642B1 (fr) * 2003-11-05 2006-09-22 Georgia Pacific France Procede de conditionnement de produits en rouleaux et cylindre associe
US7435313B2 (en) * 2004-05-21 2008-10-14 The Procter & Gamble Company Process for producing deep-nested embossed paper products
US8034215B2 (en) * 2004-11-29 2011-10-11 The Procter & Gamble Company Patterned fibrous structures
US7829177B2 (en) * 2005-06-08 2010-11-09 The Procter & Gamble Company Web materials having offset emboss patterns disposed thereon
US7597777B2 (en) * 2005-09-09 2009-10-06 The Procter & Gamble Company Process for high engagement embossing on substrate having non-uniform stretch characteristics

Also Published As

Publication number Publication date
CA2458952C (fr) 2012-09-04
ATE520826T1 (de) 2011-09-15
ES2371547T3 (es) 2012-01-05
US7494564B2 (en) 2009-02-24
CA2458952A1 (fr) 2004-09-07
US20040231813A1 (en) 2004-11-25
EP1455014A1 (de) 2004-09-08

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