EP4032695A1 - Structure d'estampage pour un rouleau d'estampage permettant de coller des produits tissulaires, rouleau d'estampage correspondant, produit tissulaire correspondant et procédé de fabrication d'un rouleau d'estampage - Google Patents

Structure d'estampage pour un rouleau d'estampage permettant de coller des produits tissulaires, rouleau d'estampage correspondant, produit tissulaire correspondant et procédé de fabrication d'un rouleau d'estampage Download PDF

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Publication number
EP4032695A1
EP4032695A1 EP21152724.7A EP21152724A EP4032695A1 EP 4032695 A1 EP4032695 A1 EP 4032695A1 EP 21152724 A EP21152724 A EP 21152724A EP 4032695 A1 EP4032695 A1 EP 4032695A1
Authority
EP
European Patent Office
Prior art keywords
embossing
gluing
elevation
elevations
embossed
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
EP21152724.7A
Other languages
German (de)
English (en)
Other versions
EP4032695B1 (fr
Inventor
Artur Koslowski
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.)
Matthews International GmbH
Original Assignee
Matthews International GmbH
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
Application filed by Matthews International GmbH filed Critical Matthews International GmbH
Priority to EP21152724.7A priority Critical patent/EP4032695B1/fr
Publication of EP4032695A1 publication Critical patent/EP4032695A1/fr
Application granted granted Critical
Publication of EP4032695B1 publication Critical patent/EP4032695B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • 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
    • B31F2201/0758—Characteristics of the embossed product
    • B31F2201/0761—Multi-layered
    • 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

Definitions

  • the invention relates to an embossing structure for an embossing roll for gluing tissue products, which has at least one embossing elevation with an embossing surface for producing an embossing motif.
  • a corresponding embossing roller, a corresponding tissue product and a method for producing an embossing roller having the embossing structure are also described.
  • the embossing tool for design purposes having a first group of large, widely spaced embossing elevations and a second group of smaller, more closely spaced embossing elevations compared to the first group, which are arranged on a pedestal, so that the tops of the first and second embossments are on the same plane and provide a common pressing surface.
  • the WO 2008/132612 A1 discloses an embossing roll for a paper substrate having an embossing surface having an emboss line element and a step extending longitudinally or transversely of the emboss line element and disposed adjacent one of two opposite edges at the upper end of the emboss line element.
  • the aim of the device disclosed is to produce particularly clear embossed edges in order to give the customer a qualitative impression.
  • the EP 1209 289 B1 discloses an apparatus for producing absorbent crepe paper.
  • the device has an embossing roller with a convex cylindrical surface for producing micro-embossing.
  • a plurality of pegs shaped in relief are arranged on the cylindrical surface, each of the pegs consisting of a truncated pyramid-shaped base with a rectangular base plate and a flattened apex or free end part.
  • Tissue products such as toilet paper or kitchen rolls are often made up of several layers of tissue.
  • the at least one top layer and the at least one bottom layer are each embossed in the embossing gap between a positively engraved steel roller and a smooth, rubber-coated backing roller in such a way that the resulting raised embossed figures face each other.
  • glue is applied to the raised tissue structure of the tissue still on an embossing roller with the aid of a gluing unit.
  • the required gluing pressure is generated either in the top-to-top process by the counter-pressure of the second steel embossing roller or in the nested process by an additional rubber-coated pressure roller.
  • gluing elevations to be arranged on the embossing elevation, which elevations are higher than the embossing elevation and provide a smaller pressing surface than the embossing surface.
  • the embossed elevation can be set up in particular to produce a visible embossed motif, in particular one with a large motif, on the tissue product.
  • the embossed elevation can have a constant first height.
  • the embossing motif can be highlighted in color compared to the rest of the tissue, for example.
  • the gluing elevations can be applied to the upper side of the embossing elevation or can be produced by removing material from the embossing structure. Starting from the height of the embossing elevations, the gluing elevations can be raised by a second height above the first height.
  • the gluing elevations have the purpose or advantage of producing relatively small pressing surfaces within the relatively large embossing surface, via which reliable adhesion between the at least two tissue plies is made possible.
  • the pressing surface can essentially correspond to the base surface of the embossing elevation.
  • the pressing area can be the sum of the surfaces of all the gluing bumps on the embossing bump.
  • the overall height of the embossed structure results from the sum of the first height of the embossing elevation and the second height of the gluing elevations.
  • the pressing surface portion provided by the gluing elevations is less than 20%, preferably less than 10%, particularly preferably less than or equal to 6% of the embossing surface. It can be provided that the distances between the gluing elevations are between 0.1 mm and 10 mm, preferably between 0.2 mm and 1.0 mm. The smaller the proportion of pressing surface, the larger the desired embossing design can be without the tissue product being perceived as too hard and without the ply adhesion falling into an insufficient range.
  • the gluing elevations can be formed uniformly and distributed regularly on the embossing surface.
  • the gluing elevations can be linear and parallel, for example.
  • the lines can be curved or jagged. Alternatively, the lines can cross.
  • provision can be made for the gluing elevations to be arranged at certain points on the embossing elevation.
  • These punctiform gluing elevations can have different shapes and can be, for example, square, round, oval, in the form of a flower pattern or similar. It is particularly advantageous if the gluing elevations extend over the entire embossing surface of the embossing elevation and are, for example, evenly spaced from one another.
  • the gluing elevations can be linear ribs between which trenches are formed, with the pressing surface being segmented by the trenches.
  • the segmentation of the pressing surface pursues the goal of breaking up the pressing surfaces by introducing parallel lines, in particular into individual surfaces that are independent of one another.
  • the trenches can extend to the level of the first height of the embossing.
  • the side walls of the trenches can be defined by the ribs respectively surrounding the trenches.
  • the ribs can as possible
  • Course shapes can be straight, curved, meandering, zigzag, angled or grid-like, with the trenches being able to assume a corresponding course as a result.
  • the trenches traverse the embossed elevation, so that the opposite trench openings open out in different sections of the same side edge or in opposite side edges of the embossed structure.
  • the trenches or correspondingly the ribs also traverse the embossed elevation, i.e. extend from one side edge to an opposite side edge of the embossed elevation, it is ensured that the pressing surfaces reach up to the edge of the embossed elevation on the one hand and have the greatest possible distribution on the other of the gluing elevations within the embossing area.
  • the trench openings point away from the embossed elevation in the rib propagation direction.
  • the side edges of the embossed structure accordingly have alternating ribs and trenches in a profile view. In the same way, it can be provided that both trench openings end on the same side of the embossed structure if the trench and/or the embossed elevation has a curved course.
  • gluing elevations can have an arcuate cross section on their upper side. Alternatively, it can be provided that in each case only the outer edges of the gluing elevations directed towards the trenches surrounding the gluing elevations are rounded.
  • the ribs are rounded downwards at their opposite rib ends which abut at least one side edge of the embossed structure.
  • the ribs can thus have a flattening profile on their outer sides lying in the rib propagation direction.
  • the ribs have a convex profile along their rib propagation direction.
  • the interruptions can be arranged as slit-shaped openings between the. The openings can be deepened down to the level of the embossed elevation opposite the ribs.
  • the embossing elevation has a main propagation direction, with the gluing elevations running in a direction deviating from the main propagation direction.
  • the gluing elevations also run in the main propagation direction in sections, for example if the embossing elevation has a curve.
  • the embossed elevation is a linear web. It can be provided that the linear web has straight sections, curved or angled sections and intersections at which the web crosses itself or other linear webs crosses.
  • the linear web can in particular have a constant width in the direction of extent. Provision can also be made for the gluing elevations to have a constant width transversely to their main direction of propagation. When the gluing elevations are designed as ribs, it can be provided that these have the same width as the trenches formed between them.
  • the invention further relates to an embossing roller having an embossing structure according to any one of the preceding claims.
  • the embossing roller cannot have any further elevations with the embossing height of the embossing structure or a greater embossing height.
  • the embossing structure consisting of the embossing elevation and the gluing elevations arranged thereon can thus represent the highest elevation on the embossing roller.
  • the embossing roller can have at least two linear webs as an embossing structure, in particular arranged perpendicular to one another, which intersect at at least one point of intersection. If several linear webs are provided on the embossing roller, it is conceivable that these are arranged uniformly and regularly on the embossing roller, so that they form a grid-like grid.
  • first plurality of essentially parallel and/or equidistant webs and a second plurality of essentially parallel and/or equidistant webs are provided, the second plurality of webs being perpendicular to the first plurality of webs, with the intersection points each being equidistant to the these surrounding intersections are arranged.
  • the invention further relates to a tissue product which has an embossing motif extending over at least one embossing area, the embossing area having a plurality of gluing impressions, in particular uniformly formed and regularly distributed on the embossing area, with a smaller, in particular between 4-20%, compared to the embossing area. , preferably 10-14%, particularly preferably 12% of the embossing area, surface proportion. It can be provided that the distances between the impressions of the glue are between 0.1 mm and 10 mm, preferably between 0.2 mm and 1.0 mm. Provision can also be made for the tissue product to have micro-embossings in addition to the embossing motif. Furthermore, it can be provided that the embossed motif is highlighted in color. In contrast, it can be provided that micro-embossings are colorless.
  • FIG. 1 shows the embossing structure 1 according to the invention, which is applied to the surface of an embossing roller 2 and is designed to produce a puzzle-shaped embossing motif 5 .
  • the embossed structure 1 comprises, as embossed elevations 4, a first plurality of linear webs 14, which essentially run in a first direction, and a second plurality of linear webs 15, which essentially run in a second direction, the second direction being perpendicular to the first direction .
  • the linear webs 14, 15 are each arranged equidistantly from one another and intersect at intersections 13.
  • the webs each have a main propagation direction X, it being evident that the linear webs 14, 15 between the intersections 13 in the illustrated embodiment have jigsaw-type bulges , in which the course of the line deviates from the main propagation direction X.
  • the total surface area A of the embossed elevations 4 essentially corresponds to that of the embossed motif produced.
  • Rib-shaped gluing elevations 6 are provided on the embossed elevations 4 essentially perpendicularly to the direction of extension, ie in the direction of rib propagation Y, which can also be described as a corrugated structure.
  • the ribs 6 are spaced apart and form between them Trenches 7, it being seen that both the ribs 6 and the trenches 7 each span the embossing elevation 4 over its entire width BP, so that the trench openings 8 directed to the outside of the embossed structure 1 are in the side edges 9, 10 of the embossed structure 1 flow.
  • the sum of the surfaces of the gluing elevations 6 ultimately results in the pressing surface or gluing surface B, via which the tissue ply processed with the embossing roller 2 is bonded to the at least one adjacent tissue ply. It is easy to see that area B is significantly smaller than area A, which makes it possible to create large-area embossed motifs.
  • FIG 2 shows an example with the embossing roller 2 figure 1 manufactured tissue product 3, which has the corresponding characteristic embossed motif 5 in the form of a puzzle.
  • the tissue product 3 essentially has three distinguishable regions, on the one hand those that do not have the embossed motif 5 figure 1 provided area in which micro-embossings 12 are arranged.
  • the surface A of the embossed motif 5 and the gluing impressions 16 arranged therein the entirety of which represents the gluing surface or pressing surface B. It is noticeable that the gluing impressions 16 run in the Y direction, ie perpendicular to the main propagation direction X of the lines of the embossed motif 5 produced by the embossed elevations 4 .
  • figure 3 shows an example of two different embodiments of the embossed structure 1, wherein Figure 3a a side view of an embossing structure 1 and the Figures 3b and 3c each represent top views of an embossing structure 1 .
  • the side view of the embossing structure 1 in Figure 3a shows that the embossed structure 1 has an embossed elevation 4 with a first height H1 and a plurality of gluing elevations 6 arranged on the embossing elevation 4, with the gluing elevations 6 each having a second height H2, so that the total height of the embossed structure 1 is the sum of the heights H1 and H2.
  • the embossed structure 1 has a length extension LR and the gluing elevations 6 each have a width BR.
  • the gluing elevations 6 each have a rectangular cross-section, but they can also have different cross-sections, for example trapezoidal or rounded at the top.
  • Trenches 7 are formed between the gluing elevations 6 and open into the side edges 9 , 10 of the embossed structure 1 with their opposite trench openings 8 .
  • the embossing elevation 4 is spanned over its full width BP by the gluing elevations 6 .
  • Figure 3a makes it clear that the area A of the embossed motif 5 is based on the entire surface of the embossed elevation 4 .
  • the pressing surface B results from the sum of the surfaces of the gluing elevations 6.
  • the gluing elevations 6 are parallel to one another and have a regular spacing from one another.
  • the proportion of the pressing surface results from the ratio of a gluing elevation surface to the distance between two adjacent gluing elevations 6.
  • FIG. 3b The embodiment shown has the gluing elevations 6 already shown in Figure 3a linear ribs shown, which run perpendicularly, i.e. in the Y direction, to the direction of propagation X of the embossed elevation 4, are arranged parallel to one another, have a regular spacing from one another and span the embossed elevation 4 over its full width BP, so that the length of the ribs is Width BP of embossing bump 4 corresponds.
  • the embodiment of FIG Figure 3b is particularly well suited for narrow embossing elevations where a segmentation of the gluing elevations 6 in the Y-direction is not necessary. Furthermore, this embodiment is easy to manufacture and inexpensive to produce.
  • Figure 3c represents a further embodiment of the embossing structure 1, in which compared to the Figure 3b embodiment shown, the gluing elevations 6 designed as linear ribs have regular interruptions 11, which thereby segment individual rib elements from one another in the Y-direction.
  • the interruptions 11 run perpendicularly to the rib propagation direction Y and have a reduced height compared to this, which can reach down to the level of the embossed elevation 4 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
EP21152724.7A 2021-01-21 2021-01-21 Structure d'estampage pour un rouleau d'estampage permettant de coller des produits tissulaires, rouleau d'estampage correspondant, produit tissulaire correspondant et procédé de fabrication d'un rouleau d'estampage Active EP4032695B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21152724.7A EP4032695B1 (fr) 2021-01-21 2021-01-21 Structure d'estampage pour un rouleau d'estampage permettant de coller des produits tissulaires, rouleau d'estampage correspondant, produit tissulaire correspondant et procédé de fabrication d'un rouleau d'estampage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21152724.7A EP4032695B1 (fr) 2021-01-21 2021-01-21 Structure d'estampage pour un rouleau d'estampage permettant de coller des produits tissulaires, rouleau d'estampage correspondant, produit tissulaire correspondant et procédé de fabrication d'un rouleau d'estampage

Publications (2)

Publication Number Publication Date
EP4032695A1 true EP4032695A1 (fr) 2022-07-27
EP4032695B1 EP4032695B1 (fr) 2024-09-04

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EP21152724.7A Active EP4032695B1 (fr) 2021-01-21 2021-01-21 Structure d'estampage pour un rouleau d'estampage permettant de coller des produits tissulaires, rouleau d'estampage correspondant, produit tissulaire correspondant et procédé de fabrication d'un rouleau d'estampage

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961119A (en) * 1973-03-15 1976-06-01 Kimberly-Clark Corporation Embossed paper toweling and method of production
EP2048283A1 (fr) * 2007-08-30 2009-04-15 INDUSTRIE CARTARIE TRONCHETTI SpA Appareil pour le collage de deux ou plusieurs plis pour la fabrication de produits en tissu
ITMI20091952A1 (it) * 2009-11-09 2011-05-10 Ind Cartarie Tronchetti Spa Apparecchiatura e metodo per realizzare un prodotto goffrato e prodotto goffrato
DE202014003638U1 (de) * 2013-05-14 2014-06-26 Engraving Solutions S.R.L. Gaufrierwalze, Gaufriereinheit mit einer derartigen Walze und erhaltenes Erzeugnis

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961119A (en) * 1973-03-15 1976-06-01 Kimberly-Clark Corporation Embossed paper toweling and method of production
EP2048283A1 (fr) * 2007-08-30 2009-04-15 INDUSTRIE CARTARIE TRONCHETTI SpA Appareil pour le collage de deux ou plusieurs plis pour la fabrication de produits en tissu
ITMI20091952A1 (it) * 2009-11-09 2011-05-10 Ind Cartarie Tronchetti Spa Apparecchiatura e metodo per realizzare un prodotto goffrato e prodotto goffrato
DE202014003638U1 (de) * 2013-05-14 2014-06-26 Engraving Solutions S.R.L. Gaufrierwalze, Gaufriereinheit mit einer derartigen Walze und erhaltenes Erzeugnis

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EP4032695B1 (fr) 2024-09-04

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