EP3795744B1 - Procédé de fabrication d'un papier absorbant texturé ainsi que dispositif correspondant - Google Patents

Procédé de fabrication d'un papier absorbant texturé ainsi que dispositif correspondant Download PDF

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Publication number
EP3795744B1
EP3795744B1 EP19199002.7A EP19199002A EP3795744B1 EP 3795744 B1 EP3795744 B1 EP 3795744B1 EP 19199002 A EP19199002 A EP 19199002A EP 3795744 B1 EP3795744 B1 EP 3795744B1
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EP
European Patent Office
Prior art keywords
embossing
fine structure
structural elements
tissue paper
ply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19199002.7A
Other languages
German (de)
English (en)
Other versions
EP3795744A1 (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 SI201930213T priority Critical patent/SI3795744T1/sl
Priority to ES19199002T priority patent/ES2911225T3/es
Priority to PT191990027T priority patent/PT3795744T/pt
Priority to EP19199002.7A priority patent/EP3795744B1/fr
Publication of EP3795744A1 publication Critical patent/EP3795744A1/fr
Application granted granted Critical
Publication of EP3795744B1 publication Critical patent/EP3795744B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/006—Making patterned paper
    • 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
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/14—Making cellulose wadding, filter or blotting paper
    • 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
    • B31F2201/0782—Layout of the complete embossing machine, of the embossing line
    • 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 a method for producing structured tissue paper and a corresponding device.
  • the method includes providing press-dried single-ply or multi-ply tissue paper and embossing the single-ply or multi-ply tissue paper with an embossing element having a textured surface.
  • embossing a fine structure is produced in the tissue paper, which has an embossing depth that varies along the surface of the tissue paper over a plurality of embossing depths perpendicular to the surface of the single-ply or multi-ply tissue paper.
  • a corresponding device for carrying out the method is also described. Such a method and such a device are from US 2017/0246827 A1 known. Similar methods and devices also describe the EP 2 018 959 A2 and the EP 0 796 728 A2 .
  • TAD Through Air Drying
  • the residual moisture in the tissue paper is expelled with heated air, while the tissue paper is guided around a central cylinder with a transport or drying net. Because the heated air is used to blow through the tissue paper, the blow-through process is significantly more energy-intensive than the press-drying process.
  • the pulp fibers of the tissue paper are raised due to blowing through with hot air, resulting in a soft surface of the tissue paper and an increase in volume compared to tissue materials produced in the press-drying process.
  • the still moist tissue paper is placed on an air-permeable transport net in a blow-through process and takes changes the structure of the mesh due to the pressurization generated by the hot air.
  • the structuring of the tissue paper produced in this way also has a positive influence on the material properties of the tissue paper; in particular, the tissue paper has a comparatively high degree of softness.
  • the absorption capacity of the tissue paper improves.
  • a method of the type described at the outset provides that during embossing a fine structure is produced in the tissue paper, which has an embossing depth that varies along the surface of the tissue paper over a large number of embossing depths perpendicular to the surface of the single-ply tissue paper.
  • a fine structure is produced at least in sections by a multiplicity of first structural elements of the embossing element arranged essentially without gaps on the structured surface of the embossing element, so that the fine structure is free of unembossed gaps.
  • the embossed element can have a structured surface, for example, which is based on the structure of a drying network of a TAD system. Since the tissue paper is generally embossed during further processing into, for example, toilet paper, kitchen roll, serviettes, handkerchiefs or similar products in the processing machine in order to give it an individual appearance and/or to achieve technical effects, it can advantageously be provided to carry out the method according to the invention for improving the properties of tissue paper in just such a processing machine, for example in an embossing unit of the processing machine. However, it is also conceivable to use the method according to the invention for the production of an intermediate or precursor product which has the fine structure mentioned and which is used in another Processing step is further processed, for example, to one of the above end products.
  • the embossing element can be designed as an embossing roller or be part of an embossing roller.
  • Embossing rollers are used, for example, in the processing machines mentioned for the production of gluing points.
  • the fine structure can be embossed with the same embossing element, or with the same embossing roller, with which the stated gluing points are also provided.
  • the embossing of gluing points and the embossing of the fine structure can also be implemented in separate process steps and accordingly with the aid of separate embossing elements or embossing rollers.
  • an embossing element according to the invention in particular an embossing roller of this type, the advantageous material properties of tissue paper that has been dried in the blow-through process can be introduced in an essentially energy-neutral manner in the further processing of the tissue material, and this using tissue paper that has been produced in the press-drying process in an energetically more favorable manner.
  • the fine structure introduced during embossing is not limited to any specific geometries, but to achieve the material properties of tissue paper dried by means of TAD, it can advantageously have a structure which is based on, or at least resembles, the structure of the drying network of a TAD system.
  • teaching according to the invention is not limited to such structures and, in addition to the structures used in the blow-through drying process, structures that go beyond this should also be taken into account.
  • the embossing roller with raised first structural elements over its entire surface for embossing the fine structure, for example to produce a preliminary product that is processed into toilet paper or another tissue product in a further processing step.
  • additional raised structural elements are introduced into the finely structured surface of the embossing element that has the raised first structural elements Glue tissue layer only at the points of the additional structural elements and thus produce a multi-layer product.
  • Embossing units for producing gluing points are known from the prior art, so that the teaching according to the invention can be achieved simply by replacing the embossing element, in particular an embossing roller, which, in addition to first structural elements for embossing the fine structure, has second structural elements for providing the gluing points.
  • the second structural elements for providing the gluing points can differ in particular from the first structural elements for providing the fine structure in that they have a greater height and thus a greater embossing depth perpendicular to the surface of the embossing element and a larger surface perpendicular to the height.
  • the process according to the invention can provide that the single-ply or multi-ply tissue paper is embossed on an unstructured and preferably on a smooth surface Support rests, for example on a counter-roller, such as a steel roller, with a smooth lateral surface, so that the tissue paper does not receive any fine structuring on the side facing away from the embossing element.
  • a counter-roller such as a steel roller
  • a roller with a flexible jacket for example a roller with a rubber jacket, is particularly preferably used as the counter-roller.
  • the embossing of the fine structure can include, at least in sections, the embossing of a continuous relief with fine structure elements tapering downwards, which is preferably free of horizontal fine structure elements.
  • a fine structure can be produced during embossing, which at least in sections has a large number of different embossing depths, preferably at least 5 different embossing depths, particularly preferably at least 10 different embossing depths and very particularly preferably at least 100 different embossing depths.
  • the fine structure particularly preferably has an even larger number of different embossing depths, for example more than 200 or more than 1000 different embossing depths.
  • the fine structure can, for example, be chaotic Have structure that has no regularity or periodicity at least in some areas.
  • the embossed elements can have an irregular structure in a cross section perpendicular to their height, for example no round or oval geometry with a constant radius or two constant radii and also no regular polygonal geometry with constant side lengths.
  • a fine structure can be produced during embossing, which has a deep structure at least in sections, in which all pairs of two adjacent fine structure elements of the fine structure have a different embossing depth.
  • Providing the press-dried tissue paper may include press-drying a moist tissue paper.
  • the provision and the embossing can be carried out as successive process steps in the same processing machine for tissue paper. Press drying and embossing can also take place in the same process step, preferably simultaneously and using the same embossing element, in particular the same embossing roller.
  • the embossing of a fine structure can include, for example, the embossing of a network structure, a lattice structure, a fabric structure, or a negative thereof. Deviating from the regular structures mentioned above, however, the fine structure can also have an irregular, chaotic structure.
  • the fine structure can be embossed over the entire surface of the tissue paper in an identical design.
  • embossing can include embossing glue points of a multi-ply tissue paper with the same embossing element.
  • the gluing points can be embossed perpendicular to the surface of the multi-ply tissue paper with an embossing depth that is at least 20%, preferably at least 30% and particularly preferably at least 40% greater than a maximum embossing depth of the fine structure.
  • the embossing of the fine structure can include the embossing of fine structure elements into the tissue paper, which are arranged in a two-dimensional grid with a constant grid dimension.
  • the fine structure elements produced in this way can be arranged in a network structure, a lattice structure, or in a fabric structure.
  • the fine structure elements can be produced in a two-dimensional grid with a grid size of less than 5 mm, preferably less than 3 mm and particularly preferably less than 2 mm.
  • a device for carrying out the method described above can be provided with a feed for press-dried single-ply or multi-ply tissue paper and an embossing unit for embossing the single-ply or multi-ply tissue paper with an embossing element having a structured surface.
  • the structured surface can have a multiplicity of raised first structure elements, of which each of the multiplicity of raised first structure elements has a maximum height which differs from the maximum height of each other of the multiplicity of raised first structure elements.
  • the multiplicity of raised first structural elements are arranged on the structured surface of the embossing element, at least in sections, essentially without any gaps.
  • the multiplicity of raised first structural elements can have at least 5, particularly preferably at least 10 and particularly preferably at least 20 raised first structural elements, of which no pair of two first structural elements has the same maximum height.
  • the raised first structure elements can form a network structure, a lattice structure, a fabric structure, or a negative thereof.
  • the first structural elements can be arranged in a two-dimensional grid with a constant grid dimension and form a network structure, a lattice structure, or a fabric structure.
  • the pitch can be less than 5 mm, preferably less than 3 mm and particularly preferably less than 2 mm.
  • the structured surface of the embossing element e.g first structural elements is.
  • the second structural elements can at least partially and preferably all have a surface perpendicular to their height that is at least four times, preferably at least eight times and particularly preferably at least twelve times larger than a surface of the first structural elements perpendicular to their height for embossing the fine structure.
  • the two structural element types preferably have a height difference. While the second structural elements can have a constant height, the height of the first structural elements can vary by up to several 100%.
  • the geometry of the first structural elements can also be irregular in cross section, deviating from the geometry of the second structural elements. While the second structural elements can be trapezoidal in cross section, the first structural elements can have an irregular structure in cross section.
  • the horizontal cross sections can also be correspondingly regular, e.g. circular or oval, in the case of the second structural elements and irregular in the case of the first structural elements.
  • the horizontal cross-sectional area of the first structural elements can vary, while the second structural elements can preferably all have the same horizontal cross-sectional area and are preferably even of identical design overall.
  • no free space can be formed between adjacent first structure elements, so that the first structure elements directly adjoin one another or merge into one another.
  • the height of the first structural elements can vary by several 100%.
  • the first structural elements can form an irregular pattern of raised structural elements, which further contributes to the creation of the advantageous haptic and mechanical properties of the fine structure.
  • the formation of the first structural elements can be chaotic or essentially chaotic, but at least with a significant irregularity.
  • the structured surface can have a fabric structure with a multiplicity of thread-like structures which extend at an angle to one another are interwoven, wherein at the crossing points of two thread-like structures extending at an angle to one another, for example at a 90° angle, one of the raised first structural elements is formed.
  • the thread-like structures can give the structured surface the structure of interwoven warp and weft threads.
  • the figure 1 shows a TAD system according to the prior art.
  • the still wet web of tissue 1 is placed on a drying net 11 and guided through a dryer 12 around a central cylinder 13 .
  • warm air is blown in the radial direction of the central cylinder 13 through the still moist tissue web 1 and the drying net 11 into the central cylinder 13, from where the warm air to which moisture is applied is discharged.
  • the tissue paper 1 which may still have residual moisture, is lifted from the drying net 11 and fed to an embossing station for further processing, for example, or wound up for intermediate storage.
  • the dry mesh 11 mesh structure Due to the pressurization in the radial direction of the central cylinder 13, the tissue paper assumes the structure of the drying network 11 during drying, as a result of which the tissue paper acquires advantageous mechanical and haptic properties, in particular an increase in volume and a high level of softness.
  • the Figure 2.1 shows a detailed view of a first embodiment of an embossing element 3 according to the invention.
  • the structured surface 2 of the embossing element 3 has a fabric structure which is formed from a large number of first structural elements 8 with integrated second structural elements 9 for forming gluing points.
  • the Figure 2.2 shows a detailed view of a further embodiment of an embossing element 3 according to the invention with a different shape of the first structural elements 8 for forming the fine structure and without second structural elements 9 for forming gluing points. Parts of the structural elements 8 form thread-like structural elements 10.
  • the figure 3 shows a tissue product which consists of several individual layers of tissue paper 1 connected to one another.
  • the individual layers of tissue paper 1 are connected to one another via gluing points 4, while the tissue paper 1, but necessarily only that which is arranged on the outside of the tissue product and in figure 3
  • the tissue paper 1 shown in the plan view has a fine structure 100 which is formed with the aid of the method according to the invention. Provision can thus be made in particular for the tissue paper 1 layers arranged below the visible upper tissue paper layer 1 to be unstructured press-dried tissue papers 1 .
  • the individual structural elements of the fine structure 100 have a significantly smaller distance from one another and a significantly smaller area in comparison to the gluing points 4 .
  • the gluing points 4 extend through the multi-ply product in order to connect the individual plies of tissue paper 1 in the gluing points, while the fine structure 100 is only incorporated in the single ply of tissue paper 1 arranged on the outside of the multi-ply tissue product and not in the underlying layers extends.
  • the back side of the multi-ply tissue product can also be provided with a fine structure.
  • both the fine structure 100 and the gluing points 4 can be carried out in the same method step, in particular using the same embossing element, for example using the embossing element 3 according to FIG Figure 2.1 be formed.
  • the embossing element 3, as shown in Figure 2.1 is shown, in addition to the first structural elements 8, which emboss the fine structure 100, second structural elements 9, which have a significantly greater height compared to the first structural elements 8, so that they differ from the first structural elements 8 for the fine structure 100 by several layers of tissue paper 1 can extend through to form gluing points 4.
  • the fine structure 100 is formed in the same way over the entire surface of the tissue product, the gluing points 4, as is basically known from the prior art, are grouped and arranged in a defined manner relative to one another to form design elements.
  • the device can basically have the structure of a processing machine known from the prior art for the production of toilet paper or kitchen roll, for example, and differ from the known devices only in that the embossing unit 7 has an embossing element with a structured surface, the structured surface having a Having a large number of raised first structural elements 8 in order to introduce the fine structure according to the invention in an embossing step.
  • the embossing step can be the same embossing step as is basically provided in prior art devices for embossing glue points, so that the prior art plants are easy to convert, for example by standardizing one for introducing glue points provided embossing roller is replaced by such an embossing roller which, in addition to the structural elements for introducing the gluing points, has further structural elements for embossing the fine structure.
  • the device 5 has a feed 6 for press-dried single-ply or multi-ply tissue paper 1 and an embossing unit 7 for embossing the single-ply or multi-ply tissue paper 1 with an embossing element having a structured surface.
  • the textured surface has a variety of raised Structural elements 8 on.
  • the device 5 also has a knurling unit 15a and a winding head 15b as well as a storage tower 16, so that the device 5 can be used to efficiently provide single-ply or multi-ply tissue paper 1 with mechanical and haptic properties in comparison to TAD systems in the press-drying process. as they could be produced in systems from the prior art only with the help of the blow-through process.
  • the knurling unit 15a is optionally used for the glue-free connection of layers to form a multi-ply tissue paper 1.
  • the winding head 15b is used for winding up toilet paper or kitchen rolls, for example.
  • wound logs of paper for example two meters in length, are stored and fed from there to a saw, which separates the logs into individual rolls. The saw is not shown.
  • the figure 5 shows an exemplary embodiment of an embossing element 3 according to the invention in cross section.
  • the embossing element 3 can be used, for example, to produce a tissue product with a fine structure 100, as shown in figure 3 is shown.
  • the embossed element 3 has first structural elements 8 with a height of T1 and second structural elements 9 with a height T2. While the second structural elements 9 can be used for the production of gluing points 4, as is basically known from the prior art, the first structural elements 8 are provided for the formation of the fine structure 100.
  • the two structural element types 8, 9 have a height difference ⁇ T. While the second structural elements 9 have a constant height T2, the height T1 of the first structural elements 8 varies by up to several 100%.
  • the geometry of the first structural elements 8 is also irregular in cross section, deviating from the geometry of the second structural elements 9, while the second structural elements 9 are trapezoidal in cross section, the first structural elements 8 have an irregular structure in cross section.
  • the horizontal cross sections (not shown) can also be correspondingly regular, for example circular or oval, for the second structural elements 9 and irregular for the first structural elements 8 .
  • the horizontal cross-sectional area of the first structural elements 8 can vary, while the second structural elements 9 can preferably all have the same horizontal cross-sectional area and are preferably even of identical design overall.
  • first structural elements 8 essentially no free space is formed between adjacent first structural elements 8 and these are directly adjacent to one another.
  • no two adjacent first structure elements 8 have the same height.
  • the height of the first structural elements 8 can vary by several 100%.
  • the first structure elements 8 form an irregular pattern of raised structure elements 8, which are used precisely to create the advantageous haptic and mechanical properties of the fine structure 100.
  • the formation of the first structural elements 8 can be chaotic or essentially chaotic, but at least with a significant irregularity.

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

Claims (13)

  1. Procédé pour la fabrication d'un papier mousseline structuré (1), qui comprend la mise à disposition d'un papier mousseline monocouche ou multicouche (1) séché par pressage et l'estampage du papier mousseline monocouche ou multicouche (1) avec un élément d'estampage (3) comprenant une surface structurée (2), dans lequel une structure fine (100) est réalisée dans le papier mousseline (1), qui présente une profondeur d'estampage variant le long de la surface du papier mousseline sur une pluralité de profondeurs d'estampage, perpendiculairement à la surface (2) du papier mousseline monocouche ou multicouche (1), caractérisé en ce que, lors de l'estampage, au moins à certains endroits, une structure fine (100) est réalisée par une pluralité de premiers éléments de structure (8) de l'élément d'estampage (3), disposés sans interstices sur la surface structurée (2) de l'élément d'estampage (3), d façon à ce que la structure fine (100) soit exempte d'interstices non estampés.
  2. Procédé selon la revendication 1, dans lequel l'estampage de la structure fine (100) comprend, l'estampage, au moins à certains endroits, d'un relief continu avec des éléments de structure fins pointant vers le bas, qui est globalement exempt d'éléments de structure fins horizontaux.
  3. Procédé selon la revendication 1 ou 2, dans lequel, lors de l'estampage de la structure fine (100), une structure fine (100) est réalisée, qui présente, au moins à certains endroits, une pluralité de profondeurs d'estampage différentes, de préférence au moins 5 profondeurs d'estampage différentes, particulièrement de préférence au moins 10 profondeurs d'estampage différentes et plus particulièrement de préférence au moins 100 profondeurs d'estampage différentes ;
  4. Procédé selon la revendication 3, dans lequel, lors de l'estampage de la structure fine (100), une structure fine (100) est réalisée, qui présente, au moins à certains endroits, une structure en profondeur, dans laquelle l'ensemble des paires de deux éléments de structure fins adjacents de la structure fine (100) présentent une profondeur d'estampage différente.
  5. Procédé selon l'une des revendications précédentes, dans lequel l'estampage de la structure fine (100) comprend l'estampage d'une structure de réseau, d'une structure de grille, d'une structure de tissu, ou d'un négatif de celles-ci.
  6. Procédé selon l'une des revendications précédentes, dans lequel l'estampage de la structure fine (100) est estampée sur toute la surface du papier mousseline (1) de manière identique.
  7. Procédé selon l'une des revendications précédentes, dans lequel l'estampage comprend, en plus de l'estampage d'une structure fine (100), l'estampage de points d'encollage (4) d'un papier mousseline multicouche (1) avec le même élément d'estampage (3), dans lequel les points d'encollage (4) sont estampés avec une profondeur d'estampage perpendiculaire à la surface (2) du papier mousseline multicouche (1), qui est supérieure d'au moins 20 %, de préférence d'au moins 30 % et plus particulièrement de préférence d'au moins 40 %, à une profondeur d'estampage maximale de la structure fine.
  8. Procédé selon l'une des revendications précédentes, dans lequel l'estampage comprend l'estampage de la structure fine (100), comprend l'estampage, dans le papier mousseline, d'éléments de structure fins qui sont disposés dans une trame bidimensionnelle avec une dimension de trame constante, dans lequel les éléments de structure fins réalisés sont disposés dans une structure de réseau, une structure de grille ou une structure de tissu.
  9. Dispositif (5) pour l'exécution du procédé selon l'une des revendications précédentes, dans lequel le dispositif comprend une alimentation (6) pour un papier mousseline monocouche ou multicouche (1) séché par pressage et une unité d'estampage (7) pour l'estampage du papier mousseline monocouche ou multicouche (1) avec un élément d'estampage (3) présentant une surface structurée (2), dans lequel la surface structurée (2) comprend une pluralité de premiers éléments de structure en relief (8), chaque élément de cette pluralité comprenant un premier élément de structure en relief (8) présente une hauteur qui est différente de la hauteur maximale de chacun des autres de la pluralité de premiers éléments de structure (8), caractérisé en ce que la pluralité de premiers éléments de structure en relief (8) sont disposés, au moins à certains endroits, de manière globalement exempte d'interstices sur la surface structurée (2) de l'élément d'estampage (3).
  10. Dispositif selon la revendication 9, dans lequel la pluralité de premiers éléments de structure en relief (8) comprend au moins 5, plus particulièrement de préférence au moins 10 et plus particulièrement de préférence au moins 20 premiers éléments de structure en relief (8), dont aucune paire de deux premiers éléments de structure (8) ne présente la même hauteur maximale.
  11. Dispositif selon la revendication 9 ou 10, dans lequel les premiers éléments de structure en relief (8) sont disposés de manière chaotique ou forment une structure en relief continue, qui est exempte d'éléments de structure horizontaux ou une structure de réseau, une structure de grille, une structure de tissu ou un négatif de celles-ci.
  12. Dispositif selon l'une des revendications 9 à 11, dans lequel la surface structurée (2) comprend une pluralité supplémentaire de deuxièmes éléments de structure en relief (9) qui présentent une hauteur qui est supérieure d'au moins 20 %, de préférence d'au moins 30 % et plus particulièrement de préférence d'au moins 40 %, à une profondeur d'estampage maximale de la pluralité de premiers éléments de structure en relief (8).
  13. Dispositif selon la revendication 12, dans lequel les deuxièmes éléments de structure (9) présentent, au moins partiellement et de préférence dans leur ensemble, une surface perpendiculaire à leur hauteur, qui est au moins 4 fois, de préférence au moins 8 fois et plus particulièrement de préférence au moins 12 fois supérieure à une surface des premiers éléments de structure (8) pour l'estampage de la structure fine (100).
EP19199002.7A 2019-09-23 2019-09-23 Procédé de fabrication d'un papier absorbant texturé ainsi que dispositif correspondant Active EP3795744B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SI201930213T SI3795744T1 (sl) 2019-09-23 2019-09-23 Postopek za proizvodnjo strukturiranega tissue papirja in ustrezna naprava
ES19199002T ES2911225T3 (es) 2019-09-23 2019-09-23 Procedimiento para la producción de un papel tisú estructurado así como un dispositivo correspondiente
PT191990027T PT3795744T (pt) 2019-09-23 2019-09-23 Procedimento para o fabrico de um papel absorvente texturado, bem como um correspondente equipamento
EP19199002.7A EP3795744B1 (fr) 2019-09-23 2019-09-23 Procédé de fabrication d'un papier absorbant texturé ainsi que dispositif correspondant

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EP19199002.7A EP3795744B1 (fr) 2019-09-23 2019-09-23 Procédé de fabrication d'un papier absorbant texturé ainsi que dispositif correspondant

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EP3795744A1 EP3795744A1 (fr) 2021-03-24
EP3795744B1 true EP3795744B1 (fr) 2022-01-12

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ES (1) ES2911225T3 (fr)
PT (1) PT3795744T (fr)
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5727458A (en) * 1996-03-20 1998-03-17 James River Corporation Of Virginia Method and apparatus for contour multi-level embossing with perforation bonding in selected spaced locations
ITFI20070163A1 (it) * 2007-07-18 2009-01-19 Perini Fabio Spa "materiale cartaceo goffrato, metodo e dispositivo per la sua produzione"
CA2958999C (fr) 2014-08-29 2022-06-14 Sofidel S.P.A. Produit en cellulose multicouche gaufre et son moyen de fabrication

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ES2911225T3 (es) 2022-05-18
PT3795744T (pt) 2022-04-14
EP3795744A1 (fr) 2021-03-24
SI3795744T1 (sl) 2022-07-29

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