EP0765215A1 - Absorbent paper multilayered sheet and method of manufacture - Google Patents

Absorbent paper multilayered sheet and method of manufacture

Info

Publication number
EP0765215A1
EP0765215A1 EP95923389A EP95923389A EP0765215A1 EP 0765215 A1 EP0765215 A1 EP 0765215A1 EP 95923389 A EP95923389 A EP 95923389A EP 95923389 A EP95923389 A EP 95923389A EP 0765215 A1 EP0765215 A1 EP 0765215A1
Authority
EP
European Patent Office
Prior art keywords
protrusions
sheet
height
elements
layer
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
Application number
EP95923389A
Other languages
German (de)
French (fr)
Other versions
EP0765215B1 (en
Inventor
Rémy Ruppel
Pierre Laurent
Jo[L Hungler
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
Kaysersberg SA
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
Family has litigation
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Application filed by Kaysersberg SA filed Critical Kaysersberg SA
Publication of EP0765215A1 publication Critical patent/EP0765215A1/en
Application granted granted Critical
Publication of EP0765215B1 publication Critical patent/EP0765215B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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
    • 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
    • B31F2201/0733—Pattern
    • 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
    • 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
    • B31F2201/0756—Characteristics of the incoming material, e.g. creped, embossed, corrugated
    • 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
    • B31F2201/0758—Characteristics of the embossed product
    • B31F2201/0761—Multi-layered
    • B31F2201/0764—Multi-layered the layers being nested
    • 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
    • B31F2201/0787—Applying adhesive
    • 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
    • B31F2201/0792—Printing
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1023—Surface deformation only [e.g., embossing]
    • 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.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24446—Wrinkled, creased, crinkled or creped
    • Y10T428/24455—Paper
    • Y10T428/24463—Plural paper components
    • 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.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24612—Composite web or sheet
    • 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.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24826—Spot bonds connect components
    • 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

Definitions

  • the present invention relates to the field of absorbent papers for sanitary and domestic use, and relates to a multilayer sheet for products such as toilet paper, handkerchiefs, towels, or wiping cloths, as well as its manufacturing process
  • US Pat. No. 3,867,225 for example, describes a process for producing such a product consisting in embossing two sheets of cellulose wadding separately according to a pattern consisting of projections or protuberances at a rate of 2 to 30 per cm 2 , applying an adhesive substance on the top of part of these projections, to bring the two sheets together by the embossed faces, that is to say having the protuberances, by placing the protuberances of one between the protuberances of the other, and glue the vertices of one sheet with the recessed areas of the other sheet.
  • voids formed between the two sheets a structure is thus produced having an improved absorption capacity compared to absorbent sheets not thus transformed.
  • connection points In certain applications of the product obtained, where softness is an important criterion, it would be desirable to avoid the presence of too many connection points between the two sheets, since the total surface bound to it is proportional and this constitutes an important stiffness factor.
  • the gluing is carried out by deposition by means of a gluing cylinder, the number of connection points is equal to that of the protuberances of the sheet receiving the glue.
  • this patent proposes partial gluing by the use of a glue applicator cylinder whose surface is hollowed out with cells. Unfortunately, such a solution has proven to be impractical industrially because it leads to rapid fouling of the cylinders by agglomeration of material in the cells.
  • US Patent 4320162 describes a multilayer sheet structure consisting of two embossed sheets. Each sheet comprises a broad pattern of first relatively deep embossed protrusions, surrounded by a tighter pattern of second less deeply embossed protrusions. The two sheets are associated, according to a first example, by the vertices of the first protrusions, and, according to a second embodiment, by the vertices of the first projections for one sheet and the vertices of the second projections for the other sheet.
  • Such a structure in theory offers a greater internal void volume than in the arrangement presented in US Pat. No. 3,867,225 since the two sheets are joined by the top of the projections. However, it is less resistant to crushing; there is in fact a collapse of the projections already under a low bearing pressure.
  • the present invention provides a multilayer structure combining the advantages of the two methods mentioned above without presenting the disadvantages, as well as its manufacturing method.
  • the subject of the invention is a multilayer absorbent sheet with at least two layers each consisting of at least one embossed sheet of creped absorbent paper weighing between 10 and 40 gm 2 per sheet, with an external face forming the external face. of the multilayer sheet and an internal face, the internal face of the first layer comprising first and second protrusions, and the internal face of the second layer comprising third nested protuberances between the protuberances of the first layer, the two layers being linked together by at least part of the tops of the protuberances of a layer made integral by bonding to the other layer between two protuberances.
  • This multilayer sheet is characterized in that said connection is provided by the first protuberances of the first layer, said second protuberances having a lower height than the first and their top having received no adhesive substance.
  • a sheet is obtained whose rigidity is lower than that of a sheet comprising the same number of protuberances also nested, but where the latter are all of the same height.
  • the resistance to crushing is not penalized.
  • the glued area can vary from 0.1 to 20% depending on the application for which the product obtained is intended.
  • the height of the second protrusions is greater than 50% of the height of the first protrusions. Indeed, optimum resistance to crushing is obtained if the second protrusions are substantially at the same level as the surface of the adjacent layer.
  • the first protrusions are distributed in a spaced pattern, at least two second protrusions being arranged between two successive first protrusions.
  • the first protrusions will advantageously reproduce a drawing combining a plurality of lines pleasing to the eye, that of a flower for example.
  • These drawings will be surrounded by points formed by the second protrusions and each occupying a small area, the density of these points may be relatively high, up to 80 or 100 points per cm.
  • the height of the third protrusions is less than or equal to the height of the first protrusions. In order to ensure satisfactory crushing resistance, it is desirable that the height of these protuberances is at least half that of the first protuberances.
  • the vertices of the third protrusions form a bond, by gluing, with the first layer.
  • the present invention also relates to a method for manufacturing the multilayer sheet presented above.
  • the method for producing a multilayer sheet consisting of embossing a first sheet of paper, itself single or multiple, on a first cylinder having on its surface first and second raised elements, and a second sheet, which can also be simple or multiple, on a second cylinder comprising third elements in relief, to deposit glue on at least part of the tops of the protuberances produced on one of the sheets, to bring the two sheets together so that the protuberances of the first sheet overlap between the protrusions of the second sheet, and the glued tops adhere to the other sheet between two protrusions, is characterized in that the first elements have a height H, measured relative to the surface of the cylinder, greater than the height h of the second elements, the difference between the heights H and h being greater than 0.05 mm: Hh> 0.05 mm
  • the difference between said heights H and h is less than 50% of H, in particular for H between 1 and 2 mm, and in particular when the height of the elements is between 1.2 and 1.5 mm.
  • a multilayer sheet is thus obtained, the second protrusions of which will optimally fulfill their role as a strut and resistance to crushing.
  • the third elements in relief, on the second cylinder have a height H "less than or equal to the height H: H * ⁇ H
  • the second cylinder has fourth elements in relief, the height h 'of the fourth elements being less than the height H * of the third elements.
  • H and h ' are linked by the relation: 0.5 xH' ⁇ h ' ⁇ H'- 0.05.
  • an adhesive substance is applied to both the first and the third protrusions.
  • FIG. 1 represents an installation for implementing the method of the invention.
  • FIG. 2 represents the pattern of the elements in relief, according to one embodiment, appearing on the surface of an embossing cylinder.
  • FIG. 3 represents the pattern of the elements in relief on the other embossing cylinder cooperating with the cylinder of FIG. 2.
  • FIG. 4 represents, seen in partial section, the multilayer sheet obtained according to the method.
  • This installation comprises two embossing units, each consisting of an elastomer-coated cylinder, 1 and 3 respectively, cooperating with an engraved steel cylinder, 2 and 4 respectively.
  • the cylinders 2 and 4 are etched so as to present in relief elements or pins, regularly distributed both in the machine direction and in the cross direction.
  • a first sheet of cellulose wadding 5, crepe absorbent paper used as sanitary or domestic paper, such as toilet paper, handkerchief, towel, or wiping cloth, is driven from a reel not shown and guided around the cylinder 1; according to the embodiment shown, it is a double sheet.
  • the cylinder is pressed against the cylinder 2 by suitable means not shown so that the sheet, passing between them, is caused to deform and follow the relief of the engraving of the cylinder 2.
  • the sheet is then driven by the latter .
  • a sizing device 8 known per se, deposits with an applicator cylinder an adhesive substance 9 on the top of the elements in relief or protuberances of the sheet 5.
  • the cylinder 4 is placed at a slight distance from the cylinder 2 so that the sheet can detach from the surface of the cylinder 4. It comes into contact with the first sheet, over a portion of its travel where it is still applied against the surface of the cylinder 2.
  • the two cylinders are driven at synchronous and opposite speeds; they are locked in rotation relative to each other so that the protrusions of the sheet 6 are received between the protrusions of the sheet 5.
  • a cylinder 7, said matchmaker, with smooth surface, driven in rotation against the cylinder 2 ensures the union of the two sheets by pressing the sheet 6 through its recessed areas - between two adjacent protrusions - against the vertices provided with glue 9 of the protrusions of the sheet 5.
  • the multilayer sheet obtained is then cut into sheets of small width and roll up, of toilet paper for example.
  • the cylinder has first and second elements in relief of different heights.
  • An enlarged, partial and perspective view of the surface of the cylinder 2 is reproduced in FIG. 1.
  • the first relief elements 10, on which the first protrusions form the first sheet have a height H, and are distributed on the surface of the cylinder according to a regular pattern or not.
  • the reliefs are obtained by etching or by machining, the height is measured from the top of the element which is generally planar, to the bottom of the etching. If the elements are reported, we proceed in the same way by difference in heights, the reference being the vertex of the highest of the elements.
  • first elements can be of any shape. They are advantageously constituted so as to form the imprint of a linear design, for example that of a flower such as that shown in FIG. 2.
  • the first elements 10 are relatively distant from each other. This spacing will depend in particular on the surface occupied by the drawing on the sheet. For example, for a drawing falling within an area of 100 mm 2 , the distance between the first two elements will be 15 mm.
  • the height H is between 1 and 2 mm.
  • a particularly suitable value for the production of toilet paper from cellulose wadding weighing between 10 and 40 gm 2 is between 1.2 and 1.5 mm, for example 1.3 mm.
  • the depth of the embossing and the height of the resulting protrusions on the sheet will depend on the hardness of the coating of the cylinder 1 and the pressure it exerts on the cylinder 2.
  • second relief elements 12 Between these first elements, relatively distant from each other, are arranged second relief elements 12 whose height h is smaller. In practice, the height h is measured by difference with H.
  • the second elements in the structure of the multilayer sheet must fulfill, like the first elements, the function of strut, to contribute to the compressive strength and give volume; however, they must be sufficiently set back from them so that the sizing device applies the adhesive substance only to the tops of the first protuberances of the first sheet.
  • the height h of the second elements will be at least 0.05 mm less than H but preferably will remain greater than half of H: 0.5 x H ⁇ h ⁇ H- 0.05.
  • FIG. 2 shows a partial plan view of the distribution of the first and second elements on the surface of the cylinder 2.
  • the cylinder 4 is engraved according to a pattern in agreement with that of the cylinder 2 so that the protuberances of the second sheet come to overlap between the protuberances of the first sheet when the two sheets are assembled according to the method of Figure 1.
  • Figure 3 shows a partial top view of the pattern of the elements in relief 14 on the surface of the cylinder 4.
  • Their height H * is equal to or less than that of the first elements of the first sheet: H " ⁇ H.
  • H H " ⁇ H.
  • the protrusions would be crushed and brought to the height H at the passage in the interval between the matching cylinder 7 and the cylinder 2.
  • the elements in relief of the cylinder 4 have a distribution identical to that of the second elements 12 of the first cylinder, leaving unembossed zones 16 into which the first elements in relief 10 fit.
  • Figure 4 is a partial sectional view of the multilayer sheet 100 obtained.
  • the sheet 5 comprises first protrusions 51, and second protrusions 52 of slightly lower height obtained with the elements in relief 10 and 12 respectively. As can be seen according to the embodiment of the figure, the latter is greater than half of that of the protrusions 51.
  • the sheet 6 itself has protrusions 61, called third protrusions obtained with the elements in relief 14. According to the embodiment shown, they have substantially the same height as the first protrusions 51, and, outside the areas occupied by the first protrusions, they overlap between the second protrusions 52 of the sheet.
  • the sheet 5 is linked to the sheet 6, between two protrusions 61, by the top of the protrusions 51 by means of a layer of adhesive 9.
  • the second cylinder comprises third and fourth raised elements which after embossing the second sheet produce third and fourth protrusions on the surface of the latter.
  • the heights H 'and h' of said elements in relief will preferably be linked by the same relationship as H and h, namely: 0.5 x H * ⁇ h ' ⁇ H- 0.05.
  • the two steel cylinders are arranged so that they mesh with one another. Compared to the solution of Figure 1, this guarantees correct positioning of the protrusions of the sheet 6 - that which is carried by the cylinder with which the matching cylinder is not associated - with respect to the protuberances of the other sheet. Indeed, by the meshing of the cylinders the two sheets are guided towards each other until they are assembled.
  • This arrangement is of particular interest when a glueer is provided on each of the embossing groups. The bringing together of the steel cylinders so that they mesh one inside the other already allows at this level a certain association of the folds. This arrangement, thanks to the second glue, is useful if one wishes to increase the number of connection points between the two layers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Laminated Bodies (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Sanitary Thin Papers (AREA)
  • Materials For Medical Uses (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

PCT No. PCT/FR95/00786 Sec. 371 Date Jan. 14, 1997 Sec. 102(e) Date Jan. 14, 1997 PCT Filed Jun. 15, 1995 PCT Pub. No. WO95/35205 PCT Pub. Date Dec. 28, 1995An absorbent multi-layer sheet, with at least two layers each constituted of at least one embossed ply of creped absorbent paper having a specific surface weight between 10 and 40 g/m2 per ply, with an external surface forming the outer side of the multi-layer sheet and an inner surface, the inner surface of the first layer including first and second protrusions and the inner surface of the second layer including third protrusions nested between the-protrusions of the first layer, the two layers being bonded together by at least part of the protrusion tips of one layer adhesively joined to the other layer between two protrusions, is characterized in that the bonding is implemented by the first protrusions of the first layer, the second protrusions having a lesser height than the first ones and their tips being adhesive-free.

Description

FEUILLE MULTICOUCHE DE PAPIER ABSORBANT, SON PROCEDE DE FABRICATION MULTILAYER SHEET OF ABSORBENT PAPER, MANUFACTURING METHOD THEREOF
La présente invention concerne le domaine des papiers absorbants à usage sanitaire et domestique, et vise une feuille multicouche pour des produits tels que papier toilette, mouchoirs, serviettes, ou chiffons d'essuyage, ainsi que son procédé de fabricationThe present invention relates to the field of absorbent papers for sanitary and domestic use, and relates to a multilayer sheet for products such as toilet paper, handkerchiefs, towels, or wiping cloths, as well as its manufacturing process
Dans l'industrie du papier sanitaire et domestique, on utilise, pour la réalisation des produits, un papier absorbant crêpé de faible poids tel que l'ouate de cellulose. On profite de sa capacité d'allongement conférée par le crêpage pour le gaufrer. En effet, le gaufrage donne du bouffant à la feuille, et induit une amélioration de l'absorption des liquides, du toucher et de la douceur.In the sanitary and domestic paper industry, low-weight creped absorbent paper such as cellulose wadding is used for the production of the products. We take advantage of its elongation capacity conferred by the crêpe to emboss it. Indeed, the embossing gives bulk to the sheet, and induces an improvement in the absorption of liquids, touch and softness.
On a cherché à augmenter encore la capacité d'absorption en créant des feuilles multicouches, obtenues en associant deux ou plusieurs feuillesWe tried to further increase the absorption capacity by creating multilayer sheets, obtained by combining two or more sheets
Le brevet US 3867225, par exemple, décrit un procédé pour réaliser un tel produit consistant à gaufrer séparément deux feuilles d'ouate de cellulose selon un motif constitué de projections ou protubérances à raison de 2 à 30 au cm2, à appliquer une substance adhésive sur le sommet d'une partie de ces projections, à rapprocher les deux feuilles par les faces gaufrées, c'est-à-dire présentant les protubérances, en disposant les protubérances de l'une entre les protubérances de l'autre, et à lier, par la colle, les sommets d'une feuille avec les zones en renfoncement de l'autre feuille. Par les vides ménagés entre les deux feuilles, on réalise ainsi une structure ayant une capacité d'absorption améliorée par rapport à des feuilles absorbantes non ainsi transformées. Dans certaines applications du produit obtenu, où la douceur est un critère important, on souhaiterait éviter la présence d'un trop grand nombre de points de liaison entre les deux feuilles, car la surface totale liée lui est proportionnelle et celle-ci constitue un important facteur de rigidité. L'encollage étant réalisé par dépôt au moyen d'un cylindre encolleur, le nombre de points de liaison est égal à celui des protubérances de la feuille recevant la colle. Pour réduire ce nombre de points de liaison, on propose dans ce brevet un encollage partiel par l'emploi d'un cylindre applicateur de colle dont la surface est creusée d'alvéoles. Malheureusement une telle solution s'est révélée impraticable industriellement car elle conduit à un encrassement rapide des cylindres par agglomération de matière dans les alvéoles.US Pat. No. 3,867,225, for example, describes a process for producing such a product consisting in embossing two sheets of cellulose wadding separately according to a pattern consisting of projections or protuberances at a rate of 2 to 30 per cm 2 , applying an adhesive substance on the top of part of these projections, to bring the two sheets together by the embossed faces, that is to say having the protuberances, by placing the protuberances of one between the protuberances of the other, and glue the vertices of one sheet with the recessed areas of the other sheet. By the voids formed between the two sheets, a structure is thus produced having an improved absorption capacity compared to absorbent sheets not thus transformed. In certain applications of the product obtained, where softness is an important criterion, it would be desirable to avoid the presence of too many connection points between the two sheets, since the total surface bound to it is proportional and this constitutes an important stiffness factor. As the gluing is carried out by deposition by means of a gluing cylinder, the number of connection points is equal to that of the protuberances of the sheet receiving the glue. To reduce this number of connection points, this patent proposes partial gluing by the use of a glue applicator cylinder whose surface is hollowed out with cells. Unfortunately, such a solution has proven to be impractical industrially because it leads to rapid fouling of the cylinders by agglomeration of material in the cells.
Le brevet US 4320162, décrit une structure de feuille multicouche constituée de deux feuilles gaufrées. Chaque feuille comprend un motif large de premières protubérances gaufrées relativement profondément, entourées d'un motif plus serré de deuxièmes protubérances gaufrées moins profondément. Les deux feuilles sont associées, selon un premier exemple, par les sommets des premières protubérances, et, selon un deuxième mode de réalisation, par les sommets des premières saillies pour une feuille et les sommets des deuxièmes saillies pour l'autre feuille. Une telle structure offre en théorie un volume de vide interne plus important que dans la disposition présentée dans le brevet US 3867225 puisqu'on joint les deux feuilles par le sommet des saillies. Elle résiste toutefois moins bien à l'écrasement; on constate en effet un affaissement des saillies déjà sous une faible pression d'appui.US Patent 4320162 describes a multilayer sheet structure consisting of two embossed sheets. Each sheet comprises a broad pattern of first relatively deep embossed protrusions, surrounded by a tighter pattern of second less deeply embossed protrusions. The two sheets are associated, according to a first example, by the vertices of the first protrusions, and, according to a second embodiment, by the vertices of the first projections for one sheet and the vertices of the second projections for the other sheet. Such a structure in theory offers a greater internal void volume than in the arrangement presented in US Pat. No. 3,867,225 since the two sheets are joined by the top of the projections. However, it is less resistant to crushing; there is in fact a collapse of the projections already under a low bearing pressure.
La présente invention propose une structure multicouche combinant les avantages des deux procédés évoqués ci-dessus sans en présenter les inconvénients, ainsi que son procédé de fabricationThe present invention provides a multilayer structure combining the advantages of the two methods mentioned above without presenting the disadvantages, as well as its manufacturing method.
L'invention a pour objet une feuille multicouche absorbante à au moins deux couches constituées, chacune, d'au moins une feuille gaufrée de papier absorbant crêpé de poids compris entre 10 et 40 g m2 par feuille, avec une face externe formant la face externe de la feuille multicouche et une face interne, la face interne de la première couche comportant des premières et des deuxièmes protubérances, et la face interne de la deuxième couche comportant des troisièmes protubérances imbriquées entre les protubérances de la première couche, les deux couches étant liées entre elles par au moins une partie des sommets des protubérances d'une couche rendus solidaires par collage à l'autre couche entre deux protubérances. Cette feuille multicouche est caractérisée en ce que ladite liaison est assurée par les premières protubérances de la première couche, lesdites deuxièmes protubérances présentant une hauteur moindre que les premières et leur sommet n'ayant pas reçu de substance adhésive.The subject of the invention is a multilayer absorbent sheet with at least two layers each consisting of at least one embossed sheet of creped absorbent paper weighing between 10 and 40 gm 2 per sheet, with an external face forming the external face. of the multilayer sheet and an internal face, the internal face of the first layer comprising first and second protrusions, and the internal face of the second layer comprising third nested protuberances between the protuberances of the first layer, the two layers being linked together by at least part of the tops of the protuberances of a layer made integral by bonding to the other layer between two protuberances. This multilayer sheet is characterized in that said connection is provided by the first protuberances of the first layer, said second protuberances having a lower height than the first and their top having received no adhesive substance.
Grâce à l'invention on obtient une feuille dont la rigidité est plus faible que celle d'une feuille comportant le même nombre de protubérances emboîtées également, mais où ces dernières sont toutes de même hauteur. En outre, on ne pénalise pas la résistance à l'écrasement. On peut aisément définir la surface totale encollée à partir de la surface des sommets des premières protubérances. Ainsi la surface encollée peut varier de 0,1 à 20% selon l'application à laquelle on destine le produit obtenu. Pour une feuille destinée à être transformée en papier toilette, on choisira une surface encollée comprise entre 1 et 5% afin d'obtenir une douceur optimale.Thanks to the invention, a sheet is obtained whose rigidity is lower than that of a sheet comprising the same number of protuberances also nested, but where the latter are all of the same height. In addition, the resistance to crushing is not penalized. We can easily define the total surface glued from the surface of the vertices of the first protuberances. Thus the glued area can vary from 0.1 to 20% depending on the application for which the product obtained is intended. For a sheet intended to be transformed into toilet paper, we will choose a glued surface between 1 and 5% in order to obtain an optimal softness.
Conformément à une autre caractéristique, la hauteur des deuxièmes protubérances est supérieure à 50% de la hauteur des premières protubérances. En effet, on obtient une résistance optimale à l'écrasement si les deuxièmes protubérances sont sensiblement au même niveau que la surface de la couche adjacente.According to another characteristic, the height of the second protrusions is greater than 50% of the height of the first protrusions. Indeed, optimum resistance to crushing is obtained if the second protrusions are substantially at the same level as the surface of the adjacent layer.
Conformément à une autre caractéristique, les premières protubérances sont réparties selon un motif espacé, au moins deux deuxièmes protubérances étant disposées entre deux premières protubérances successives. Les premières protubérances reproduiront avantageusement un dessin combinant une pluralité de traits plaisant à l'oeil, celui d'une fleur par exemple. Ces dessins seront entourés de points constitués par les deuxièmes protubérances et occupant chacun une faible surface, la densité de ces points pourra être relativement élevée, jusqu'à 80 ou 100 points au cm .According to another characteristic, the first protrusions are distributed in a spaced pattern, at least two second protrusions being arranged between two successive first protrusions. The first protrusions will advantageously reproduce a drawing combining a plurality of lines pleasing to the eye, that of a flower for example. These drawings will be surrounded by points formed by the second protrusions and each occupying a small area, the density of these points may be relatively high, up to 80 or 100 points per cm.
Conformément à une autre caractéristique, la hauteur des troisièmes protubérances est inférieure ou égale à la hauteur des premières protubérances. Afin d'assurer une résistance à l'écrasement satisfaisante il est souhaitable que la hauteur de ces protubérances soit au moins la moitié de celle des premières protubérances.According to another characteristic, the height of the third protrusions is less than or equal to the height of the first protrusions. In order to ensure satisfactory crushing resistance, it is desirable that the height of these protuberances is at least half that of the first protuberances.
Conformément à une autre caractéristique, les sommets des troisièmes protubérances forment une liaison, par collage, avec la première couche.According to another characteristic, the vertices of the third protrusions form a bond, by gluing, with the first layer.
La présente invention a également pour objet un procédé permettant de fabriquer la feuille multicouche présentée ci-dessus. Le procédé pour réaliser une feuille multicouche, consistant à gaufrer une première feuille de papier, elle-même simple ou multiple, sur un premier cylindre comportant à sa surface des premiers et des seconds éléments en relief, et une deuxième feuille, pouvant également être simple ou multiple, sur un deuxième cylindre comportant des troisièmes éléments en relief, à déposer de la colle sur au moins une partie des sommets des protubérances réalisées sur l'une des feuilles, à rapprocher les deux feuilles de façon que les protubérances de la première feuille s'imbriquent entre les protubérances de la deuxième feuille, et que les sommets encollés adhèrent à l'autre feuille entre deux protubérances, est caractérisé en ce que les premiers éléments ont une hauteur H, mesurée par rapport à la surface du cylindre, supérieure à la hauteur h des seconds éléments, la différence entre les hauteurs H et h étant supérieure à 0,05 mm : H-h > 0,05mmThe present invention also relates to a method for manufacturing the multilayer sheet presented above. The method for producing a multilayer sheet, consisting of embossing a first sheet of paper, itself single or multiple, on a first cylinder having on its surface first and second raised elements, and a second sheet, which can also be simple or multiple, on a second cylinder comprising third elements in relief, to deposit glue on at least part of the tops of the protuberances produced on one of the sheets, to bring the two sheets together so that the protuberances of the first sheet overlap between the protrusions of the second sheet, and the glued tops adhere to the other sheet between two protrusions, is characterized in that the first elements have a height H, measured relative to the surface of the cylinder, greater than the height h of the second elements, the difference between the heights H and h being greater than 0.05 mm: Hh> 0.05 mm
Conformément à une autre caractéristique, la différence entre lesdites hauteurs H et h est inférieure à 50 % de H, en particulier pour H compris entre 1 et 2 mm, et notamment lorsque la hauteur des éléments est comprise entre 1,2 et 1,5 mm. On obtient ainsi une feuille multicouche dont les deuxièmes protubérances rempliront de façon optimale leur rôle de jambe de force et de résistance à l'écrasement. Conformément à une autre caractéristique, les troisièmes éléments en relief, sur le deuxième cylindre, ont une hauteur H" inférieure ou égale à la hauteur H : H* ≤ HAccording to another characteristic, the difference between said heights H and h is less than 50% of H, in particular for H between 1 and 2 mm, and in particular when the height of the elements is between 1.2 and 1.5 mm. A multilayer sheet is thus obtained, the second protrusions of which will optimally fulfill their role as a strut and resistance to crushing. According to another characteristic, the third elements in relief, on the second cylinder, have a height H "less than or equal to the height H: H * ≤ H
Conformément à une autre caractéristique, le deuxième cylindre comporte des quatrièmes éléments en relief, la hauteur h' des quatrièmes éléments étant inférieure à la hauteur H* des troisièmes éléments.According to another characteristic, the second cylinder has fourth elements in relief, the height h 'of the fourth elements being less than the height H * of the third elements.
Conformément à un autre caractéristique, H et h' sont liés par la relation : 0,5 xH' ≤h' ≤ H'- 0,05.According to another characteristic, H and h 'are linked by the relation: 0.5 xH' ≤h '≤ H'- 0.05.
Conformément à une autre caractéristique, on applique une substance adhésive à la fois sur les premières et les troisièmes protubérances.According to another characteristic, an adhesive substance is applied to both the first and the third protrusions.
D'autres caractéristiques et avantages apparaîtront à la lecture des modes de réalisation non limitatifs de l'invention, en référence aux dessins annexés sur lesquels :Other characteristics and advantages will appear on reading the nonlimiting embodiments of the invention, with reference to the appended drawings in which:
La figure 1 représente une installation pour la mise en oeuvre du procédé de l'invention.FIG. 1 represents an installation for implementing the method of the invention.
La figure 2 représente le motif des éléments en relief, selon un mode de réalisation, apparaissant à la surface d'un cylindre de gaufrage.FIG. 2 represents the pattern of the elements in relief, according to one embodiment, appearing on the surface of an embossing cylinder.
La figure 3 représente le motif des éléments en relief sur l'autre cylindre de gaufrage coopérant avec le cylindre de la figure 2.FIG. 3 represents the pattern of the elements in relief on the other embossing cylinder cooperating with the cylinder of FIG. 2.
La figure 4 représente, vue en coupe partielle , la feuille multicouche obtenue selon le procédé.FIG. 4 represents, seen in partial section, the multilayer sheet obtained according to the method.
On a représenté schématiquement sur la figure 1 une machine, maintenant classique, permettant de fabriquer le produit de l'invention.There is shown schematically in Figure 1 a machine, now conventional, for manufacturing the product of the invention.
Cette installation comporte deux unités de gaufrage, constituées chacune d'un cylindre à revêtement en élastomère, 1 et 3 respectivement, coopérant avec un cylindre en acier gravé, 2 et 4 respectivement. Les cylindres 2 et 4 sont gravés de façon à présenter en surface des éléments en relief ou picots, répartis régulièrement aussi bien sens machine que sens travers.This installation comprises two embossing units, each consisting of an elastomer-coated cylinder, 1 and 3 respectively, cooperating with an engraved steel cylinder, 2 and 4 respectively. The cylinders 2 and 4 are etched so as to present in relief elements or pins, regularly distributed both in the machine direction and in the cross direction.
Une première feuille d'ouate de cellulose 5, papier crêpé absorbant utilisé comme papier sanitaire ou domestique, tel que papier toilette, mouchoir, serviette, ou chiffon d'essuyage, est entraînée depuis une bobine non représentée et guidée autour du cylindre 1; selon le mode de réalisation représenté, il s'agit d'une feuille double. Le cylindre est pressé contre le cylindre 2 par des moyens appropriés non représentés de telle sorte que la feuille, en passant entre eux, est amenée à se déformer et épouser le relief de la gravure du cylindre 2. La feuille est ensuite entraînée par ce dernier. Un dispositif d'encollage 8, connu en soi, dépose avec un cylindre applicateur une substance adhésive 9 sur le sommet des éléments en relief ou protubérances de la feuille 5.A first sheet of cellulose wadding 5, crepe absorbent paper used as sanitary or domestic paper, such as toilet paper, handkerchief, towel, or wiping cloth, is driven from a reel not shown and guided around the cylinder 1; according to the embodiment shown, it is a double sheet. The cylinder is pressed against the cylinder 2 by suitable means not shown so that the sheet, passing between them, is caused to deform and follow the relief of the engraving of the cylinder 2. The sheet is then driven by the latter . A sizing device 8, known per se, deposits with an applicator cylinder an adhesive substance 9 on the top of the elements in relief or protuberances of the sheet 5.
Une deuxième feuille 6, entraînée depuis une bobine, subit un gaufrage analogue en passant entre les cylindres 3 et 4. Le cylindre 4 est disposé à une légère distance du cylindre 2 afin que la feuille puisse se détacher de la surface du cylindre 4. Elle vient au contact de la première feuille, sur une portion de sa course où celle-ci est encore appliquée contre la surface du cylindre 2. Les deux cylindres sont entraînés à des vitesses synchrones et opposées; ils sont calés en rotation l'un par rapport à l'autre de façon que les protubérances de la feuille 6 viennent se loger entre les protubérances de la feuille 5. Un cylindre 7, dit marieur, à surface lisse, entraîné en rotation contre le cylindre 2 assure l'union des deux feuilles en pressant la feuille 6 par ses zones en renfoncement - entre deux protubérances adjacentes - contre les sommets pourvus de colle 9 des protubérances de la feuille 5. La feuille multicouche obtenue est ensuite découpée en feuilles de petite laize et mise en rouleaux, de papier toilette par exemple.A second sheet 6, driven from a reel, undergoes a similar embossing passing between the cylinders 3 and 4. The cylinder 4 is placed at a slight distance from the cylinder 2 so that the sheet can detach from the surface of the cylinder 4. It comes into contact with the first sheet, over a portion of its travel where it is still applied against the surface of the cylinder 2. The two cylinders are driven at synchronous and opposite speeds; they are locked in rotation relative to each other so that the protrusions of the sheet 6 are received between the protrusions of the sheet 5. A cylinder 7, said matchmaker, with smooth surface, driven in rotation against the cylinder 2 ensures the union of the two sheets by pressing the sheet 6 through its recessed areas - between two adjacent protrusions - against the vertices provided with glue 9 of the protrusions of the sheet 5. The multilayer sheet obtained is then cut into sheets of small width and roll up, of toilet paper for example.
Selon un premier mode de réalisation de l'invention, le cylindre présente des premiers et deuxièmes éléments en relief de hauteurs différentes. Une vue agrandie, partielle et en perspective de la surface du cylindre 2 est reproduite sur la figure 1. Les premiers éléments en relief 10, sur lesquels se forment les premières protubérances de la première feuille, ont une hauteur H, et sont répartis à la surface du cylindre selon un motif régulier ou non. Lorsque les reliefs sont obtenus par gravure ou par usinage, la hauteur est mesurée depuis le sommet de l'élément qui est sensiblement plan en général, jusqu'au fond de la gravure. Si les éléments sont rapportés, on procède de la même façon par différence de hauteurs, la référence étant le sommet des plus élevés des éléments.According to a first embodiment of the invention, the cylinder has first and second elements in relief of different heights. An enlarged, partial and perspective view of the surface of the cylinder 2 is reproduced in FIG. 1. The first relief elements 10, on which the first protrusions form the first sheet, have a height H, and are distributed on the surface of the cylinder according to a regular pattern or not. When the reliefs are obtained by etching or by machining, the height is measured from the top of the element which is generally planar, to the bottom of the etching. If the elements are reported, we proceed in the same way by difference in heights, the reference being the vertex of the highest of the elements.
Ces premiers éléments peuvent être de forme quelconque. Ils sont avantageusement constitués de façon à former l'empreinte d'un dessin linéaire, par exemple celui d'une fleur tel que celui représenté sur la figure 2. Les premiers éléments 10 sont relativement distants les uns des autres. Cet espacement sera fonction notamment de la surface occupée par le dessin sur la feuille. Par exemple, pour un dessin s'inscrivant dans une surface de 100 mm2, la distance entre deux premiers éléments sera de 15 mm. La hauteur H est comprise entre 1 et 2 mm. Une valeur particulièrement appropriée, pour la réalisation d'un papier toilette à partir d'ouate de cellulose de poids compris entre 10 et 40 g m2, est comprise entre 1,2 et 1,5 mm, par exemple 1,3 mm. Bien évidemment, la profondeur du gaufrage et la hauteur des protubérances en résultant sur la feuille dépendra de la dureté du revêtement du cylindre 1 et de la pression qu'il exerce sur le cylindre 2.These first elements can be of any shape. They are advantageously constituted so as to form the imprint of a linear design, for example that of a flower such as that shown in FIG. 2. The first elements 10 are relatively distant from each other. This spacing will depend in particular on the surface occupied by the drawing on the sheet. For example, for a drawing falling within an area of 100 mm 2 , the distance between the first two elements will be 15 mm. The height H is between 1 and 2 mm. A particularly suitable value for the production of toilet paper from cellulose wadding weighing between 10 and 40 gm 2 is between 1.2 and 1.5 mm, for example 1.3 mm. Obviously, the depth of the embossing and the height of the resulting protrusions on the sheet will depend on the hardness of the coating of the cylinder 1 and the pressure it exerts on the cylinder 2.
Entre ces premiers éléments, relativement éloignés les uns des autres, sont disposés des deuxièmes éléments en relief 12 dont la hauteur h est plus faible. En pratique, la hauteur h est mesurée par différence avec H.Between these first elements, relatively distant from each other, are arranged second relief elements 12 whose height h is smaller. In practice, the height h is measured by difference with H.
Ces seconds éléments dans la structure de la feuille multicouche doivent remplir, comme les premiers éléments, la fonction de jambe de force, pour contribuer à la résistance à la compression et donner le volume; cependant ils doivent être suffisamment en retrait par rapport à ceux-ci pour que le dispositif d'encollage n'applique la substance adhésive que sur les sommets des premières protubérances de la première feuille. En pratique, la hauteur h des seconds éléments sera au moins inférieure de 0,05 mm à H mais de préférence restera supérieure à la moitié de H : 0,5 x H < h ≤ H- 0,05.These second elements in the structure of the multilayer sheet must fulfill, like the first elements, the function of strut, to contribute to the compressive strength and give volume; however, they must be sufficiently set back from them so that the sizing device applies the adhesive substance only to the tops of the first protuberances of the first sheet. In practice, the height h of the second elements will be at least 0.05 mm less than H but preferably will remain greater than half of H: 0.5 x H <h ≤ H- 0.05.
Ces éléments 12 sont répartis, entre les éléments 10, selon un motif régulier plus serré. Sur la figure 2, on a représenté une vue partielle en plan de la répartition des premiers et seconds éléments à la surface du cylindre 2.These elements 12 are distributed between the elements 10, according to a tighter regular pattern. FIG. 2 shows a partial plan view of the distribution of the first and second elements on the surface of the cylinder 2.
Le cylindre 4 est gravé selon un motif en concordance avec celui du cylindre 2 de telle sorte que les protubérances de la deuxième feuille viennent s'imbriquer entre les protubérances de la première feuille au moment de l'assemblage des deux feuilles selon le procédé de la figure 1. La figure 3 représente une vue de dessus partielle du motif des éléments en relief 14 à la surface du cylindre 4. Leur hauteur H* est égale ou inférieure à celle des premiers éléments de la première feuille : H" < H. En effet, si elle était supérieure, les protubérances seraient écrasées et amenées à la hauteur H au passage dans l'intervalle entre le cylindre marieur 7 et le cylindre 2. Comme on le constate, dans cet exemple, les éléments en relief du cylindre 4 ont une répartition identique à celle des deuxièmes éléments 12 du premier cylindre. Ils laissent des zones 16 non gaufrées dans lesquelles viennent s'emboîter les premiers éléments en relief 10.The cylinder 4 is engraved according to a pattern in agreement with that of the cylinder 2 so that the protuberances of the second sheet come to overlap between the protuberances of the first sheet when the two sheets are assembled according to the method of Figure 1. Figure 3 shows a partial top view of the pattern of the elements in relief 14 on the surface of the cylinder 4. Their height H * is equal to or less than that of the first elements of the first sheet: H "<H. In indeed, if it were greater, the protrusions would be crushed and brought to the height H at the passage in the interval between the matching cylinder 7 and the cylinder 2. As it can be seen, in this example, the elements in relief of the cylinder 4 have a distribution identical to that of the second elements 12 of the first cylinder, leaving unembossed zones 16 into which the first elements in relief 10 fit.
La figure 4 est une vue partielle en coupe de la feuille multicouche 100 obtenue. La feuille 5 comporte des premières protubérances 51, et des secondes protubérances 52 de hauteur légèrement inférieure obtenues avec les éléments en relief 10 et 12 respectivement. Comme on peut le voir selon le mode de réalisation de la figure, cette dernière est supérieure à la moitié de celle des protubérances 51. La feuille 6 comporte elle-même des protubérances 61, dites troisièmes protubérances obtenues avec les éléments en relief 14. Selon le mode de réalisation représenté, elles ont sensiblement la même hauteur que les premières protubérances 51, et, en dehors des zones occupées par les premières protubérances, elles s'imbriquent entre les deuxièmes protubérances 52 de la feuille. La feuille 5 est liée à la feuille 6, entre deux protubérances 61, par le sommet des protubérances 51 au moyen d'une couche d'adhésif 9.Figure 4 is a partial sectional view of the multilayer sheet 100 obtained. The sheet 5 comprises first protrusions 51, and second protrusions 52 of slightly lower height obtained with the elements in relief 10 and 12 respectively. As can be seen according to the embodiment of the figure, the latter is greater than half of that of the protrusions 51. The sheet 6 itself has protrusions 61, called third protrusions obtained with the elements in relief 14. According to the embodiment shown, they have substantially the same height as the first protrusions 51, and, outside the areas occupied by the first protrusions, they overlap between the second protrusions 52 of the sheet. The sheet 5 is linked to the sheet 6, between two protrusions 61, by the top of the protrusions 51 by means of a layer of adhesive 9.
Grâce à la solution de l'invention avec gaufrage à deux niveaux de l'une des feuilles, il est possible également d'obtenir des feuilles multicouches dont l'aspect peut être encore amélioré en colorant la substance adhésiveThanks to the solution of the invention with two-level embossing of one of the sheets, it is also possible to obtain multilayer sheets whose appearance can be further improved by coloring the adhesive substance.
Selon un autre mode réal sation de l'invention non représenté, le deuxième cylindre comporte des troisièmes et quatrièmes éléments en relief qui après gaufrage de la deuxième feuille produisent des troisièmes et quatrièmes protubérances à la surface de cette dernière. Les hauteurs H' et h' desdits éléments en relief seront de préférence liés par la même relation que H et h, à savoir : 0,5 x H* ≤ h' < H- 0,05.According to another embodiment not shown of the invention, the second cylinder comprises third and fourth raised elements which after embossing the second sheet produce third and fourth protrusions on the surface of the latter. The heights H 'and h' of said elements in relief will preferably be linked by the same relationship as H and h, namely: 0.5 x H * ≤ h '<H- 0.05.
Selon un autre mode réalisation non représenté, on dispose les deux cylindres acier de façon qu'ils engrènent l'un dans l'autre. Par rapport à la solution de la figure 1, on garantit ainsi un positionnement correct des protubérances de la feuille 6 - celle qui est portée par le cylindre auquel n'est pas associé le cylindre marieur - par rapport aux protubérances de l'autre feuille. En effet, par l'engrènement des cylindres les deux feuilles sont guidées l'une vers l'autre jusqu'à leur assemblage. Cette disposition présente un intérêt particulier lorsqu'on prévoit un encolleur sur chacun, des groupes de gaufrage. Le rapprochement des cylindres acier de façon à ce qu'ils engrènent l'un dans l'autre permet déjà à ce niveau une certaine association des plis. Cette disposition, grâce au deuxième encolleur, est utile si on souhaite augmenter le nombre des points de liaison entre les deux couches. According to another embodiment, not shown, the two steel cylinders are arranged so that they mesh with one another. Compared to the solution of Figure 1, this guarantees correct positioning of the protrusions of the sheet 6 - that which is carried by the cylinder with which the matching cylinder is not associated - with respect to the protuberances of the other sheet. Indeed, by the meshing of the cylinders the two sheets are guided towards each other until they are assembled. This arrangement is of particular interest when a glueer is provided on each of the embossing groups. The bringing together of the steel cylinders so that they mesh one inside the other already allows at this level a certain association of the folds. This arrangement, thanks to the second glue, is useful if one wishes to increase the number of connection points between the two layers.

Claims

REVENDICATIONS
1) Feuille multicouche absorbante à au moins deux couches constituées, chacune, d'au moins une feuille gaufrée de papier absorbant crêpé de poids compris entre 10 et 40 g/m2 par feuille, avec une face externe formant la face externe de la feuille multicouche et une face interne, la face interne de la première couche comportant des premières et des deuxièmes protubérances, et la face interne de la deuxième couche comportant des troisièmes protubérances imbriquées entre les protubérances de la première couche, les deux couches étant liées entre elles par au moins une partie des sommets des protubérances d'une couche rendus solidaires par collage à l'autre couche entre deux protubérances, caractérisée en ce que ladite liaison est assurée par les premières protubérances de la première couche, lesdites deuxièmes protubérances présentant une hauteur moindre que les premières et leur sommet n'ayant pas reçu de substance adhésive.1) Multilayer absorbent sheet with at least two layers each consisting of at least one embossed sheet of creped absorbent paper weighing between 10 and 40 g / m 2 per sheet, with an external face forming the external face of the sheet multilayer and an internal face, the internal face of the first layer comprising first and second protrusions, and the internal face of the second layer comprising third overlapping protuberances between the protuberances of the first layer, the two layers being linked together by at least part of the vertices of the protrusions of a layer made integral by bonding to the other layer between two protrusions, characterized in that said connection is provided by the first protrusions of the first layer, said second protrusions having a height less than the former and their top having received no adhesive substance.
2) Feuille selon la revendication précédente caractérisée en ce que la hauteur des deuxièmes protubérances est supérieure à 50 % de la hauteur des premières protubérances.2) Sheet according to the preceding claim characterized in that the height of the second protrusions is greater than 50% of the height of the first protrusions.
3) Feuille selon l'une des revendications précédentes caractérisée en ce que les premières protubérances sont réparties selon un motif espacé, plus d'une deuxième protubérance étant disposée entre deux premières protubérances successives.3) Sheet according to one of the preceding claims characterized in that the first protrusions are distributed in a spaced pattern, more than a second protuberance being arranged between two successive first protuberances.
4) Feuille selon l'une des revendications précédentes caractérisée en ce que la surface encollée des sommets des premières protubérances représente entre 0,1 et 20% de la surface de la feuille.4) Sheet according to one of the preceding claims characterized in that the glued surface of the tops of the first protrusions represents between 0.1 and 20% of the surface of the sheet.
5) Feuille selon la revendication précédente caractérisée en ce que ladite surface encollée représente entre 1 et 5 % de la surface totale de la feuille.5) Sheet according to the preceding claim characterized in that said glued surface represents between 1 and 5% of the total surface of the sheet.
6) Feuille selon l'une des revendications précédentes caractérisée en ce que la hauteur des troisièmes protubérances est inférieure ou égale à la hauteur des premières protubérances.6) Sheet according to one of the preceding claims characterized in that the height of the third protrusions is less than or equal to the height of the first protrusions.
7) Feuille selon la revendication précédante caractérisée en ce que la deuxième couche comporte des quatrièmes protubérances dont la hauteur est au moins 50 % de la hauteur des troisièmes protubérances.7) Sheet according to the preceding claim characterized in that the second layer has fourth protrusions whose height is at least 50% of the height of the third protrusions.
8) Feuille selon l'une des revendications 6 et 7 caractérisée en ce que les sommets des troisièmes protubérances forment une liaison par collage avec la première couche.8) Sheet according to one of claims 6 and 7 characterized in that the tops of the third protrusions form a bond by bonding with the first layer.
9) Procédé pour réaliser une feuille multicouche selon l'une des revendications précédentes, consistant à gaufrer une première feuille de papier sur un premier cylindre comportant à sa surface des premiers et des seconds éléments en relief, et une deuxième feuille sur un deuxième cylindre comportant des troisièmes éléments en relief, à déposer de la colle sur au moins une partie des sommets des protubérances réalisées sur l'une des feuilles, à rapprocher les deux feuilles de façon que les protubérances de la première feuille s'imbriquent entre les protubérances de la deuxième feuille, et que les sommets encollés adhèrent à l'autre feuille entre deux protubérances, caractérisé en ce que les premiers éléments ont une hauteur H supérieure à la hauteur h des seconds éléments, la différence entre les hauteurs H et h étant supérieure à 0,05 mm : H - h > 0,059) Method for producing a multilayer sheet according to one of the preceding claims, comprising embossing a first sheet of paper on a first cylinder having on its surface first and second raised elements, and a second sheet on a second cylinder comprising third elements in relief, depositing glue on at least part of the tops of the protuberances produced on one of the sheets, bringing the two sheets together so that the protuberances of the first sheet overlap between the protuberances of the second sheet, and that the glued tops adhere to the other sheet between two protrusions, characterized in that the first elements have a height H greater than the height h of the second elements, the difference between the heights H and h being greater than 0 0.05 mm: H - h> 0.05
10) Procédé selon la revendication 9 caractérisé en ce que la différence entre lesdites hauteurs H et h est inférieure à 50 % de H pour H compris entre 1 et 2 mm.10) Method according to claim 9 characterized in that the difference between said heights H and h is less than 50% of H for H between 1 and 2 mm.
11) Procédé selon l'une des revendications 9 et 10 caractérisé en ce que les troisièmes éléments en relief, sur le deuxième cylindre ont une hauteur H1 inférieure ou égale à la hauteur H : H* ≤ H 12) Procédé selon la revendication 11 caractérisé en ce que le deuxième cylindre comporte des quatrièmes éléments en relief, la hauteur h* des quatrièmes éléments étant inférieure à la hauteur H1 des troisièmes éléments.11) Method according to one of claims 9 and 10 characterized in that the third elements in relief, on the second cylinder have a height H 1 less than or equal to the height H: H * ≤ H 12) Method according to claim 11 characterized in that the second cylinder comprises fourth elements in relief, the height h * of the fourth elements being less than the height H 1 of the third elements.
13) Procédé selon la revendication 12 caractérisé en ce que H' et h' sont liés par la relation : 0,5 x IT < h' < H'- 0,0513) Method according to claim 12 characterized in that H 'and h' are linked by the relationship: 0.5 x IT <h '<H'- 0.05
14) Procédé selon la revendication 12 ou 13 caractérisé en ce que, les hauteurs des premiers et troisièmes éléments en relief étant égales : H = IT, on applique une substance adhésive pour assurer la liaison des deux feuilles sur le sommet des troisièmes protubérances.14) Method according to claim 12 or 13 characterized in that, the heights of the first and third elements in relief being equal: H = IT, an adhesive substance is applied to ensure the connection of the two sheets on the top of the third protuberances.
15) Procédé selon la revendication 14 caractérisé en ce qu'on applique une substance adhésive à la fois sur les premières et les troisièmes protubérances. 15) Method according to claim 14 characterized in that an adhesive substance is applied to both the first and the third protrusions.
EP95923389A 1994-06-17 1995-06-15 Absorbent paper multilayered sheet and method of manufacture Revoked EP0765215B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9407482A FR2721251B1 (en) 1994-06-17 1994-06-17 Multilayer sheet of absorbent paper, process for its production
FR9407482 1994-06-17
PCT/FR1995/000786 WO1995035205A1 (en) 1994-06-17 1995-06-15 Absorbent paper multilayered sheet and method of manufacture

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EP0765215A1 true EP0765215A1 (en) 1997-04-02
EP0765215B1 EP0765215B1 (en) 1999-03-10

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AT (1) ATE177363T1 (en)
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DK (1) DK0765215T3 (en)
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FI (1) FI965041A (en)
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Families Citing this family (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5620776A (en) * 1992-12-24 1997-04-15 James River Corporation Of Virginia Embossed tissue product with a plurality of emboss elements
US5840404A (en) * 1995-08-25 1998-11-24 Fort James France Absorbent multilayer sheet and method for making same
US5965235A (en) * 1996-11-08 1999-10-12 The Procter & Gamble Co. Three-dimensional, amorphous-patterned, nesting-resistant sheet materials and method and apparatus for making same
DE69913122T2 (en) * 1998-03-02 2004-05-27 Fabio Perini S.P.A. METHOD AND DEVICE FOR PRODUCING EMBOSSED RAILWAY MATERIAL AND PRODUCT PRODUCED IN THIS WAY
US6277466B1 (en) * 1998-11-23 2001-08-21 The Procter & Gamble Company Embossed multi ply cellulosic fibrous structure and process for producing the same
US6086715A (en) * 1998-11-23 2000-07-11 The Procter & Gamble Company Embossed multiply cellulosic fibrous structure having selective bond sites and process for producing the same
US6245273B1 (en) 1998-12-30 2001-06-12 Kimberly-Clark Worldwide, Inc. Method for embossing and crimping a multi-layer sheet material web assembly
KR100366116B1 (en) * 1999-05-28 2003-01-25 더 프록터 앤드 갬블 캄파니 Cellulosic fibrous web having embossed pattern
IT1307887B1 (en) * 1999-06-18 2001-11-19 Perini Fabio Spa EMBOSSING METHOD AND DEVICE FOR THE PRODUCTION OF MULTI-LEVEL STRUCTURAL MATERIALS, AND PRODUCT SO OBTAINED.
US6368539B1 (en) * 1999-07-30 2002-04-09 Potlatch Corporation Methods of embossing materials
US6572722B1 (en) 1999-11-22 2003-06-03 The Procter & Gamble Company Process for autogeneously bonding laminae of a mult-lamina cellulosic substrate
US6602577B1 (en) 2000-10-03 2003-08-05 The Procter & Gamble Company Embossed cellulosic fibrous structure
AUPR081300A0 (en) * 2000-10-18 2000-11-09 Winchester (Avon Downs) Pty Ltd A filtering device
KR100965955B1 (en) 2000-11-14 2010-06-24 킴벌리-클라크 월드와이드, 인크. Enhanced multi-ply tissue products
ES2260179T3 (en) * 2001-06-29 2006-11-01 Georgia-Pacific France MANUFACTURING PROCEDURE OF A GOFRADA CELLULOSE GUATA SHEET AND GOFRADO CYLINDER.
US7805818B2 (en) 2001-09-05 2010-10-05 The Procter & Gamble Company Nonwoven loop member for a mechanical fastener
PT1319748E (en) † 2001-12-12 2008-07-29 Georgia Pacific France Multiply sheet of absorbent paper
EP1325982B1 (en) * 2001-12-27 2007-02-14 Georgia-Pacific France Embossed paper sheet
US6649025B2 (en) 2001-12-31 2003-11-18 Kimberly-Clark Worldwide, Inc. Multiple ply paper wiping product having a soft side and a textured side
ITFI20020053A1 (en) 2002-03-29 2003-09-29 Perini Fabio Spa METHOD AND DEVICE FOR THE PRODUCTION OF EMBOSSED AND MANUFACTURED MATERIAL OBTAINED WITH THIS METHOD
WO2005009587A1 (en) * 2003-07-29 2005-02-03 Roger William Gemmell A filter element
US8241543B2 (en) 2003-08-07 2012-08-14 The Procter & Gamble Company Method and apparatus for making an apertured web
US20050247397A1 (en) * 2003-09-29 2005-11-10 The Procter & Gamble Company Process for producing embossed products
US7374638B2 (en) * 2003-09-29 2008-05-20 The Procter & Gamble Company High bulk strong absorbent single-ply tissue-towel paper product
US7314663B2 (en) * 2003-09-29 2008-01-01 The Procter + Gamble Company Embossed multi-ply fibrous structure product and process for making same
WO2005080677A2 (en) * 2004-02-17 2005-09-01 The Procter & Gamble Company Deep-nested embossed paper products
BRPI0418657A (en) * 2004-03-18 2007-05-29 Sca Hygiene Prod Ab method and device for producing a multilayer blanket of flexible material, such as paper and nonwoven, and multilayer material produced by the method
US7435313B2 (en) * 2004-05-21 2008-10-14 The Procter & Gamble Company Process for producing deep-nested embossed paper products
US7413629B2 (en) * 2004-05-21 2008-08-19 The Procter & Gamble Company Process for producing deep-nested embossed paper products
ITFI20050032A1 (en) * 2005-03-01 2006-09-02 Perini Fabio Spa METHOD AND PROVISION FOR THE JOINT OF PAPER SAILS
ITFI20050033A1 (en) * 2005-03-01 2006-09-02 Perini Fabio Spa EMBOSSING ROLLER, EMBEDDING DEVICE INCLUDING THE ROLLER AND ITEM OF PAPER-MADE MATERIAL MADE WITH THIS EMBOSSING DEVICE
ITMI20050554A1 (en) * 2005-04-04 2006-10-05 Giovanni Gambini MULTILAYER PAPER
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
DE102006010709A1 (en) * 2006-03-08 2007-09-13 Metsä Tissue Oyj Embossing device for at least two-ply surface products such as toilet paper, handkerchiefs o.
US7744723B2 (en) * 2006-05-03 2010-06-29 The Procter & Gamble Company Fibrous structure product with high softness
US8152959B2 (en) * 2006-05-25 2012-04-10 The Procter & Gamble Company Embossed multi-ply fibrous structure product
WO2008125149A1 (en) * 2006-07-26 2008-10-23 Sca Hygiene Products Gmbh Multi-ply tissue paper product, paper converting device for a multi-ply tissue paper product and method for producing a multi-ply tissue paper product
ITFI20060245A1 (en) 2006-10-11 2008-04-12 Delicarta Spa A MATERIAL IN PAPER WITH HIGH DETERGENT CHARACTERISTICS AND METHOD FOR ITS PRODUCTION
ITFI20070048A1 (en) * 2007-02-27 2008-08-28 Perini Fabio Spa MULTI-FUNCTION EMBOSS GROUP
USD618920S1 (en) 2007-05-02 2010-07-06 The Procter & Gamble Company Paper product
US8999095B2 (en) 2008-08-07 2015-04-07 SCA Hygiene Prodcuts GmbH Apparatus and method for ply bonding as well as multi-ply product
WO2010015281A1 (en) * 2008-08-07 2010-02-11 Sca Hygiene Products Gmbh Apparatus and method for ply bonding as well as multi-ply product
USD632896S1 (en) 2009-03-10 2011-02-22 The Procter & Gamble Company Paper product
USD640473S1 (en) 2009-03-10 2011-06-28 The Procter & Gamble Company Paper product
US9271879B2 (en) * 2009-03-13 2016-03-01 The Procter & Gamble Company Article having a seal and process for forming the same
MX2011009625A (en) * 2009-03-13 2011-09-29 Procter & Gamble Process for making an embossed web.
US8328984B2 (en) 2009-05-19 2012-12-11 The Procter & Gamble Company Web substrate having optimized emboss design
MX359983B (en) * 2009-12-07 2018-10-18 Essity Hygiene & Health Ab Fibrous product, embossing roll for producing such fibrous product, and device and method for producing such fibrous product.
US9079324B2 (en) * 2010-03-11 2015-07-14 The Procter & Gamble Company Process for making a film/nonwoven laminate
US9067357B2 (en) 2010-09-10 2015-06-30 The Procter & Gamble Company Method for deforming a web
US9220638B2 (en) 2010-09-10 2015-12-29 The Procter & Gamble Company Deformed web materials
US8657596B2 (en) 2011-04-26 2014-02-25 The Procter & Gamble Company Method and apparatus for deforming a web
FR2976473B1 (en) 2011-06-15 2013-07-12 Georgia Pacific France ABSORBENT PAPER ROLL WITH LOW DIMENSIONS
USD792714S1 (en) * 2015-04-17 2017-07-25 Avintiv Specialty Materials Inc. Nonwoven fabric
EP3300612A1 (en) * 2016-10-03 2018-04-04 Boegli-Gravures S.A. Paper joint without discontinuity for tube shaped paper wraps closed by means of embossed paper and re-sealable innerliner seal by means of structured innerliner
US11253129B2 (en) 2017-03-02 2022-02-22 Daio Paper Corporation Hygienic thin-leaf paper
JP2021532945A (en) 2018-08-22 2021-12-02 ザ プロクター アンド ギャンブル カンパニーThe Procter & Gamble Company Disposable absorbent goods
WO2020180314A1 (en) 2019-03-06 2020-09-10 Kimberly-Clark Worldwide, Inc. Embossed multi-ply tissue products
BR112022016516A2 (en) * 2020-03-05 2022-10-11 Kimberly Clark Co TISSUE PAPER PRODUCT

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867225A (en) * 1969-01-23 1975-02-18 Paper Converting Machine Co Method for producing laminated embossed webs
US4307141A (en) * 1978-10-10 1981-12-22 American Can Company Multi-ply fibrous sheet structure
US4320162A (en) * 1980-05-15 1982-03-16 American Can Company Multi-ply fibrous sheet structure and its manufacture
US4483728A (en) * 1980-07-14 1984-11-20 Kimberly-Clark Corporation Relieved patterned marrying roll
FR2653793B1 (en) * 1989-10-30 1992-01-03 Kaysersberg Sa
FR2684598B1 (en) * 1991-12-09 1995-04-07 Kaysersberg Sa METHOD FOR MANUFACTURING LAMINATED EMBOSSED SHEETS. MACHINE FOR ITS IMPLEMENTATION.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9535205A1 *

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US5846636A (en) 1998-12-08
FI965041A0 (en) 1996-12-16
FR2721251B1 (en) 1996-07-26
FR2721251A1 (en) 1995-12-22
CA2193088A1 (en) 1995-12-28
DE69508242D1 (en) 1999-04-15
EP0765215B1 (en) 1999-03-10
CA2193088C (en) 2001-04-17
DE69508242T2 (en) 1999-07-29
ES2128742T3 (en) 1999-05-16
ATE177363T1 (en) 1999-03-15
GR3029870T3 (en) 1999-07-30
FI965041A (en) 1996-12-16
WO1995035205A1 (en) 1995-12-28
DK0765215T3 (en) 1999-09-27

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