EP2069136A2 - Procédé et installation d'association de plis formant une feuille absorbante - Google Patents
Procédé et installation d'association de plis formant une feuille absorbanteInfo
- Publication number
- EP2069136A2 EP2069136A2 EP07848268A EP07848268A EP2069136A2 EP 2069136 A2 EP2069136 A2 EP 2069136A2 EP 07848268 A EP07848268 A EP 07848268A EP 07848268 A EP07848268 A EP 07848268A EP 2069136 A2 EP2069136 A2 EP 2069136A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- association
- series
- engraved
- cylinders
- 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.)
- Granted
Links
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
-
- 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 generally used. It 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 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.
- This type of association requires specific equipment, additional in the production line which represents a cost, additional technical difficulties.
- the glue itself is expensive, clogs the cylinders of the embossing unit and may induce additional undesired stiffness on the final product whose softness will be by elsewhere diminished by the presence of glue.
- 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 therefore corresponds to the width of a wheel.
- the bands can form decorative strips on the sheet.
- US Pat. No. 3,377,224 describes a "tissue" paper made by such a method. Since a very limited width of paper is knurled, a significant disadvantage lies in the delamination of the non-knurled areas.
- 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.
- 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 (running direction of the machine) 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.
- the subject of the present invention is a glueless association method, 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 a second fold with said first fold by passing said folds between a first engraved steel cylinder of axis CC and at least a 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. Without departing from the scope of the invention, 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. Furthermore, 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.
- FIG. 1 is a block diagram showing principal elements capable of implementing the method according to the invention
- FIG. 2 is a perspective drawing showing the respective positions of the engraved cylinder, the smooth wheels and against the cylinder, according to one embodiment of the invention.
- the combination of folds based on cellulose wadding is essentially achieved thanks to their successive passage between a first series of rollers or small smooth rollers 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 in FIG. 1, the axes (respectively CC and AA ') of the engraved cylinders 2, and rubber 4 belonging substantially to the same horizontal plane, while the axes of rotation XX and YY 'small cylinders 1, 3 are angularly spaced 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. In other words 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 shown in Figures 2 and 3, thus an association is made on the entire surface of the width.
- an axial overlapping zone (e) is provided for the surfaces covered by the rollers as illustrated by the diagram of FIG. 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 geometry defects of the engraved cylinder 2 and / or the wheels 1, 3 are compensated by the use of individually adjustable wheels: more specifically the support force of each wheel 1, 3 against the engraved cylinder 2 can be adjusted and its position on one 4 for axes XX 'or YY'.
- Each wheel can be moved along its axis of rotation (XX ', YY') to adjust the overlap width (e) above.
- Parallelism or "pseudo-axial" adjustment of each wheel can also be adjusted.
- 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. In all cases, it is sought to distribute the forces applied to the engraved cylinder 2, optimally.
- 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 exerted on the cylinder 2.
- sheets of toilet paper consisting of two plies of cellulose wadding.
- CWP type Conventional Wet Press
- 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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
- Paper (AREA)
- Laminated Bodies (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
Claims
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 true EP2069136A2 (fr) | 2009-06-17 |
EP2069136B1 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 (fr) |
EP (1) | EP2069136B1 (fr) |
AT (1) | ATE455642T1 (fr) |
CA (1) | CA2663073C (fr) |
DE (1) | DE602007004512D1 (fr) |
DK (1) | DK2069136T3 (fr) |
EA (1) | EA015225B1 (fr) |
ES (1) | ES2339509T3 (fr) |
FR (1) | FR2906184B1 (fr) |
MX (1) | MX2009002839A (fr) |
PT (1) | PT2069136E (fr) |
WO (1) | WO2008037878A2 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020070060A1 (fr) | 2018-10-02 | 2020-04-09 | Fabio Perini S.P.A. | Élément de liaison de couche mécanique, unité de liaison de couche mécanique pour lier mécaniquement des couches de matériau de cellulose, et procédé associé |
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 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2682258A1 (fr) | 2012-07-06 | 2014-01-08 | UniMa Tec Prägesysteme GmbH | Procédé et dispositif d'imprégnation de bandes de tissu à plusieurs couches |
EP2692948B2 (fr) * | 2012-08-03 | 2023-04-19 | Sca Tissue France | Produit en papier de soie multicouche et son procédé de fabrication |
ITUB20169873A1 (it) * | 2016-01-08 | 2017-07-08 | Ind Cartarie Tronchetti Spa | Apparecchiatura per la fabbricazione di prodotti in carta a più veli |
Family Cites Families (4)
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 |
-
2006
- 2006-09-27 FR FR0608490A patent/FR2906184B1/fr not_active Expired - Fee Related
-
2007
- 2007-09-21 WO PCT/FR2007/001539 patent/WO2008037878A2/fr active Application Filing
- 2007-09-21 PT PT07848268T patent/PT2069136E/pt unknown
- 2007-09-21 EP EP07848268A patent/EP2069136B1/fr active Active
- 2007-09-21 DK DK07848268.4T patent/DK2069136T3/da active
- 2007-09-21 US US12/443,209 patent/US8114250B2/en not_active Expired - Fee Related
- 2007-09-21 MX MX2009002839A patent/MX2009002839A/es active IP Right Grant
- 2007-09-21 DE DE602007004512T patent/DE602007004512D1/de active Active
- 2007-09-21 AT AT07848268T patent/ATE455642T1/de active
- 2007-09-21 CA CA2663073A patent/CA2663073C/fr not_active Expired - Fee Related
- 2007-09-21 EA EA200900460A patent/EA015225B1/ru not_active IP Right Cessation
- 2007-09-21 ES ES07848268T patent/ES2339509T3/es active Active
-
2012
- 2012-01-05 US US13/344,169 patent/US8323453B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2008037878A2 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020070060A1 (fr) | 2018-10-02 | 2020-04-09 | Fabio Perini S.P.A. | Élément de liaison de couche mécanique, unité de liaison de couche mécanique pour lier mécaniquement des couches de matériau de cellulose, et procédé associé |
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 |
Also Published As
Publication number | Publication date |
---|---|
FR2906184A1 (fr) | 2008-03-28 |
EP2069136B1 (fr) | 2010-01-20 |
US8323453B2 (en) | 2012-12-04 |
US20100006247A1 (en) | 2010-01-14 |
EA015225B1 (ru) | 2011-06-30 |
ES2339509T3 (es) | 2010-05-20 |
WO2008037878A3 (fr) | 2008-06-05 |
PT2069136E (pt) | 2010-04-14 |
DE602007004512D1 (de) | 2010-03-11 |
CA2663073C (fr) | 2015-01-20 |
CA2663073A1 (fr) | 2008-04-03 |
DK2069136T3 (da) | 2010-05-03 |
ATE455642T1 (de) | 2010-02-15 |
US8114250B2 (en) | 2012-02-14 |
MX2009002839A (es) | 2009-03-30 |
US20120103553A1 (en) | 2012-05-03 |
EA200900460A1 (ru) | 2009-10-30 |
WO2008037878A2 (fr) | 2008-04-03 |
FR2906184B1 (fr) | 2008-11-07 |
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