EP2069136B1 - Procédé et installation d'association de plis formant une feuille absorbante - Google Patents

Procédé et installation d'association de plis formant une feuille absorbante Download PDF

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Publication number
EP2069136B1
EP2069136B1 EP07848268A EP07848268A EP2069136B1 EP 2069136 B1 EP2069136 B1 EP 2069136B1 EP 07848268 A EP07848268 A EP 07848268A EP 07848268 A EP07848268 A EP 07848268A EP 2069136 B1 EP2069136 B1 EP 2069136B1
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EP
European Patent Office
Prior art keywords
cylinder
series
small
cylinders
engraved
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.)
Active
Application number
EP07848268A
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German (de)
English (en)
French (fr)
Other versions
EP2069136A2 (fr
Inventor
Sébastien Jeannot
Benoît Hoeft
Pierre Probst
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
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Publication of EP2069136A2 publication Critical patent/EP2069136A2/fr
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Publication of EP2069136B1 publication Critical patent/EP2069136B1/fr
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    • 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
    • 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
    • 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
    • B31F2201/0784—Auxiliary operations
    • B31F2201/0789—Joining plies without adhesive

Definitions

  • the present invention relates to the field of absorbent papers based on cellulose wadding, for sanitary or domestic use such as toilet paper, towels or any paper wiping, napkins ...
  • cellulose wadding also known as tissue paper
  • tissue paper is a low weight absorbent paper, between 10 and 45 g / m 2 , obtained wet from paper fibers. It includes, possibly, chemical additives in small proportions, according to the use for which it is intended. It can be obtained by pressing the still wet sheet on a heated cylinder of large diameter, on which it is dried and from which it is then detached by means of a metal blade applied against it, transversely to its direction of rotation. This operation is intended to crepe the sheet which then has transverse corrugations to its direction walk. The crepe gives the sheet a certain elasticity at the same time as it increases its thickness and gives it tactile properties.
  • Another known method of manufacture comprises a first step of drying the sheet, at least in part, by means of a stream of hot air therethrough. This can then be creped or not.
  • the sheet thus manufactured is then transformed into another distinct phase of production known as transformation or conversion and associated with other sheets then called folds to form the final absorbent paper product.
  • the association can be of a chemical nature by gluing, for example, or of a mechanical nature.
  • the known methods consist in depositing a film of glue on all or part of the surface of one of the plies, and then in contacting the glued surface with the surface of at least one other ply.
  • the combination of the folds can be performed by knurling or by compression, in the conversion or conversion phase.
  • Knurling conventionally consists in compressing the folds to be associated between a wheel (or engraved wheel, provided with elements in relief) and a smooth cylinder.
  • Each knurled band corresponds to the width of a wheel.
  • the bands can form decorative strips on the sheet.
  • association by knurling is limited when it is desired to make patterns across the width of a width. Indeed, even if a large number of knurls are arranged side by side (thus creating a large number of bands) there may be areas without knurling.
  • the document EP 1 362 953 illustrates a particular example of an installation and method using knurling.
  • the major difference with respect to the basic method described above is that the combination of folds takes place in wide parallel bands (machine running direction) on the sheet, and in that one applies a film of additive such as oil on at least one of the faces of the sheet to obtain watermarking simultaneously with the combination.
  • the knurling generally creates problems of legibility of the embossed pattern if it exists, because, in known manner, the knurling overwrites the embossing patterns already formed on the sheet.
  • EP 1,533,112 or EP 0 672 402 which describe methods and installations for combining several folds made of cellulose wadding, according to which the combination is produced by knurling the folds which pass between at least one series of rolls engraved in different patterns and a pressure cylinder or cylinder marryer, under a certain pressure.
  • the subject of the present invention is a method of association without glue, by pressure marking of at least two plies based on cellulose wadding, characterized in that it consists of embossing in an embossing pattern at least a first fold by passage between a first cylinder and a cylinder externally covered with a rubber, then to associate at least one second fold with said first fold by passing said folds between a first engraved steel cylinder of axis CC 'and at least one first series of small coaxial cylinders externally smooth axis XX ', then between said first cylinder and a second series of small coaxial cylinders externally smooth axes YY', the axes CC ', XX' and YY 'being horizontal and parallel.
  • the association is operated according to all or part of the embossing pattern and / or engraving of the engraved cylinder, uniformly over the entire width of the folds to be associated.
  • the small cylinders of each series are axially spaced from each other by a distance substantially equal to their width, and arranged in a staggered sequence from one series to another, so that a width of recovery in the cross direction is between 0.1 mm and about 10 mm, preferably 1 mm, is carried out.
  • This characteristic makes it possible to obtain a regularly distributed association, very uniform throughout the width of a log, even if it is relatively large.
  • At least one of the plies is embossed individually prior to the association.
  • At least one of the plies is not embossed before the association.
  • the axes XX 'and YY' are angularly spaced from an angle ⁇ measured along the axis CC ', between 10 ° and 180 °.
  • the folds pass under a third series of small smooth cylinders cooperating with said engraved cylinder.
  • the plies to be associated are pressed against the engraved cylinder during and between all the steps of the association.
  • the rubber cylinder, the first cylinder and the small cylinders are respectively positioned and adjusted so that the contact between the first engraved cylinder and each of the small smooth cylinders is made under a specific pressure of between about 40 and about 250 N / mm 2 .
  • the invention further relates to the installation for implementing the method, as protected by claims 11 to 14 defined below.
  • the combination of plies based on cellulose wadding is essentially achieved through their successive passage between a first series of rollers or small smooth cylinders 1 and an engraved cylinder 2 at a first "nip", then between a second series of rollers or small smooth rollers 3 and said engraved roll 2.
  • the engraved cylinder 2 may be externally constituted of a steel and has for example a diameter of about 600 mm, and a length of 2700 mm, or even 3400 mm.
  • the engraved cylinder 2 can be externally hardened.
  • a hardness rubber of for example between 40 and 80 ShA (Shore A hardness) is used.
  • All cylinders 1, 2, 3, 4 have axes of rotation parallel to each other, horizontal.
  • the small cylinders (or wheels) 1, 3 can be made of hardened steel.
  • the cylinders and series of cylinders are arranged as illustrated on the figure 1 the axes (respectively CC 'and AA') of the engraved cylinders 2, and of rubber 4 belonging substantially to the same horizontal plane, while the axes of rotation XX 'and YY' of the small cylinders 1, 3 are angularly spaced from an angle ⁇ measured along the axis CC 'of the engraved cylinder.
  • the angle ⁇ may be between 10 ° and 180 °, preferably between 90 and 150 °.
  • the series of small cylinders 1, 3 are arranged in a sector opposite to that to which the rubber cylinder 4 belongs, so that an equilibrium of forces applied to the engraved cylinder is generally and easily realized.
  • a first fold (or group of folds) 5 is embossed between the rubber roll 4 and the engraved roll 2.
  • the embossing patterns may advantageously be any, continuous, uniform or not along the width.
  • the embossing patterns can be chosen without constraint by the manufacturer.
  • a second fold or group of folds 6 can also be brought (by any means known per se and not shown) into the nip between the engraved roll 2 and the first set of rollers 1, where it is associated with the first fold (or group folds) 5.
  • the small smooth cylinders 3 being transversely offset vis-à-vis the small cylinders 1, as visible on the figures 2 and 3 Thus, an association is made on the entire surface of the width.
  • an axial zone of overlap (e) surfaces covered by the wheels is provided as illustrated by the diagram of the figure 3 .
  • a covering width (e) more specifically recommended is at least 0.1 mm and preferably about 1 mm. It can reasonably be between 0.1 and 10 mm.
  • This particular offset ensures the association across the width of the width without any unassociated area and with a certain tolerance for the positioning of each of the small cylinders.
  • a better visibility of the embossing pattern at the association zones is observed because the pressure exerted between the engraved cylinder 2 and the small cylinders 1, 3 at the time of the combination creates a watermarking paper.
  • the embossing pattern may be uniform across the width, at one or more levels, or different in parallel stripes.
  • the second fold (or group of folds) 6 can be embossed or not, creped or not when it joins the first fold 5 at the nip between the engraved cylinder 2 and the first series of small cylinder 1.
  • the defects in geometry of the engraved cylinder 2 and / or the wheels 1, 3 are compensated by the use of individually adjustable wheels: more precisely the support force of each wheel 1, 3 against the engraved cylinder 2 can be set as well as its position on one of the axes XX 'or YY'.
  • Each wheel can be moved along its axis of rotation (XX ', YY') to adjust the overlap width (e) above.
  • the axes AA 'and CC' of the cylinders 2 and 4 may belong not to a horizontal plane but to a vertical or substantially vertical plane.
  • the arrangement of the main elements required for the invention advantageously allows the use of the same engraved cylinder 2 at a time for the embossing of at least one ply and for the association by marking of several plies.
  • the knurls can be distributed over more than two axes of rotation, the axes being arranged around the engraved cylinder 2 so as to balance the forces acting on the cylinder 2.
  • toilet paper sheets consisting of two plies of cellulose wadding type CWP (Conventional Wet Press) total weight equal to 42 g / m 2 .
  • One of the plies is embossed before the association, by a microgaufrage comprising more than 30 protuberances / cm 2 ; the other ply is embossed between the cylinders 4 and 2 with a pattern comprising a regular network of large and small protuberances: the large protuberances being aligned and forming rhombs within which the small protuberances are arranged with a high density.
  • the two plies are associated through two sets of knobs 1, 3, each wheel of each series having a width of 80 mm; the wheels 1 are offset with respect to the rollers 3 so that there is a covering (e) of about 1 mm.
  • the engraved cylinder 2 has been externally hardened and has an external hardness of 57 HRC (Rockwell hardness known to those skilled in the art).
  • the smooth wheels are externally hardened and have a hardness of 2 to 20 HRC lower than that of the engraved cylinder 2.
  • the smooth wheels 1, 3 may have an external hardness of 47 HRC.
  • the speeds of scrolling folds, at the level of the association, can be of the order of 450 m / min, or even more depending on the type of manufacture.
EP07848268A 2006-09-27 2007-09-21 Procédé et installation d'association de plis formant une feuille absorbante Active EP2069136B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0608490A FR2906184B1 (fr) 2006-09-27 2006-09-27 Procede d'association de plis formant une feuille absorbante
PCT/FR2007/001539 WO2008037878A2 (fr) 2006-09-27 2007-09-21 Procede et installation d'association de plis formant une feuille absorbante

Publications (2)

Publication Number Publication Date
EP2069136A2 EP2069136A2 (fr) 2009-06-17
EP2069136B1 true EP2069136B1 (fr) 2010-01-20

Family

ID=37964300

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07848268A Active EP2069136B1 (fr) 2006-09-27 2007-09-21 Procédé et installation d'association de plis formant une feuille absorbante

Country Status (12)

Country Link
US (2) US8114250B2 (es)
EP (1) EP2069136B1 (es)
AT (1) ATE455642T1 (es)
CA (1) CA2663073C (es)
DE (1) DE602007004512D1 (es)
DK (1) DK2069136T3 (es)
EA (1) EA015225B1 (es)
ES (1) ES2339509T3 (es)
FR (1) FR2906184B1 (es)
MX (1) MX2009002839A (es)
PT (1) PT2069136E (es)
WO (1) WO2008037878A2 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2682258A1 (de) 2012-07-06 2014-01-08 UniMa Tec Prägesysteme GmbH Verfahren und Vorrichtung zum Prägen von mehrlagigen Tissue-Bahnen
EP2692948B2 (en) * 2012-08-03 2023-04-19 Sca Tissue France Multi-ply tissue paper product and method for manufacturing the same
ITUB20169873A1 (it) * 2016-01-08 2017-07-08 Ind Cartarie Tronchetti Spa Apparecchiatura per la fabbricazione di prodotti in carta a più veli
IT201800009090A1 (it) 2018-10-02 2020-04-02 Perini Fabio Spa Organo di mollettatura, gruppo di mollettatura per unire veli di materiale cellulosico, e metodo
CN111805981A (zh) * 2020-07-28 2020-10-23 马鞍山市富源机械制造有限公司 一种单双线压花轮交替压花机构及其压花工艺

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3377224A (en) * 1966-03-11 1968-04-09 Kimberly Clark Co Method of embossing differentially creped tissue paper
US5543202A (en) 1994-03-14 1996-08-06 Kimberly-Clark Corporation Process for producing a crimp-bonded fibrous cellulosic laminate
EP1362953B1 (fr) 2002-05-14 2005-05-11 Georgia-Pacific France Procédé de marquage d'une feuille de papier, feuille ayant un motif de type filigrane
ITMI20032279A1 (it) * 2003-11-24 2005-05-25 Ind Cartarie Tronchetti Spa Apparecchiatura per la fabbricazione di prodotti in carta a piu'veli mediante godronatura

Also Published As

Publication number Publication date
MX2009002839A (es) 2009-03-30
US20100006247A1 (en) 2010-01-14
FR2906184A1 (fr) 2008-03-28
US8323453B2 (en) 2012-12-04
EA200900460A1 (ru) 2009-10-30
PT2069136E (pt) 2010-04-14
ATE455642T1 (de) 2010-02-15
ES2339509T3 (es) 2010-05-20
CA2663073A1 (en) 2008-04-03
FR2906184B1 (fr) 2008-11-07
WO2008037878A3 (fr) 2008-06-05
WO2008037878A2 (fr) 2008-04-03
DK2069136T3 (da) 2010-05-03
EA015225B1 (ru) 2011-06-30
DE602007004512D1 (de) 2010-03-11
US20120103553A1 (en) 2012-05-03
US8114250B2 (en) 2012-02-14
EP2069136A2 (fr) 2009-06-17
CA2663073C (en) 2015-01-20

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