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EP2090695B1 - Procédé de fabrication d'une surcouche résistant à l'abrasion - Google Patents

Procédé de fabrication d'une surcouche résistant à l'abrasion Download PDF

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Publication number
EP2090695B1
EP2090695B1 EP09001209A EP09001209A EP2090695B1 EP 2090695 B1 EP2090695 B1 EP 2090695B1 EP 09001209 A EP09001209 A EP 09001209A EP 09001209 A EP09001209 A EP 09001209A EP 2090695 B1 EP2090695 B1 EP 2090695B1
Authority
EP
European Patent Office
Prior art keywords
paper web
wet
metering
application
resin
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.)
Revoked
Application number
EP09001209A
Other languages
German (de)
English (en)
Other versions
EP2090695A1 (fr
Inventor
Dr. Reinhard Kreuder
Klaus Fischer
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.)
Dekor-Kunststoffe GmbH
Dekor Kunststoffe GmbH
Original Assignee
Dekor-Kunststoffe GmbH
Dekor Kunststoffe 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=40674000&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2090695(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dekor-Kunststoffe GmbH, Dekor Kunststoffe GmbH filed Critical Dekor-Kunststoffe GmbH
Priority to PL09001209T priority Critical patent/PL2090695T3/pl
Publication of EP2090695A1 publication Critical patent/EP2090695A1/fr
Application granted granted Critical
Publication of EP2090695B1 publication Critical patent/EP2090695B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D21H19/385—Oxides, hydroxides or carbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/0469—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper
    • B44C5/0476—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper with abrasion resistant properties
    • 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
    • D21H27/18—Paper- or board-based structures for surface covering
    • D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
    • D21H27/26—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures

Definitions

  • the invention relates to a method for producing a scrub-resistant overlay, in particular for laminates.
  • overlay papers are used whose purpose is to produce a highly transparent and at the same time very hard-wearing surface on the actual decorative layer.
  • Durability has hitherto been understood as meaning high chemical resistance and water resistance of the surface, and also the ability to counteract mechanical wear and, above all, to prevent damage to the decorative layer.
  • a method directed thereto discloses, for example, the EP 0 875 399 A2 ,
  • the former is achieved through the use of melamine-formaldehyde resins, which provide a compact resistant surface by compression and resin condensation.
  • the mechanical resistance is enhanced by the incorporation of hard particles such as e.g. Corundum granules secured in the resin matrix.
  • the surface of the finished laminate is produced by molding the pressure plate surface in the compression. To prevent damage to the press plate by corundum in the overlay during the pressing process, this is covered by a pulp layer.
  • Such overlays are mainly produced by the liquid overlay method in which the amount of corundum (hereinafter referred to as coarse corundum) necessary for achieving the abrasion-resistant properties is obtained by rinsing and metering a resin coarse corundum dispersion onto an overlay base paper ,
  • the prior art is a method in which an overlay base paper, usually with a basis weight of 25-35 g / m 2 , is unwound from a roll. On this paper web, a resin solution is then applied on one side by means of a scoop roller in the first step, so that the cellulose fibers of the paper can be filled with the resin solution and as much air as possible is replaced with resin from the fiber capillaries.
  • the paper is guided by deflection rollers over a longer "breathing distance", in which the paper web swells due to the moisture absorption, then the web is passed through a second resin pan, is received in the further resin in the paper structure.
  • the paper web now saturated with resin solution, is passed between two metering rolls which form a gap of defined width and thus control the application weight of the resin solution on the paper web.
  • a resin coarse corundum dispersion is applied to the already resin-impregnated paper web on one side, the application weight of which is then determined and adjusted by means of a further nip.
  • the paper web thus treated and provided with coarse corundum on one side was dried to a defined residual moisture content in a drying tunnel designed as a floating dryer.
  • the overlay in addition to its function as a transparent and abrasion-resistant cover layer in the laminate floor, obtains further surface properties (eg abrasion resistance of the surface), it is provided according to the methods hitherto known from the prior art that an appropriate additive is added "in bulk" becomes. This means, that the complete amount of resin must undergo a modification as part of the core impregnation.
  • an additive which is intended to exert its effect only on the surface must be used in large quantities in the core resin for effect development, with the result that this leads to a considerable increase in the cost of the overlay to be produced.
  • the paper web fed to the drying device is provided in its partly dried state with an additional top-side application in such a way that the partially dried web gets an additional top-side application via a coating unit in the middle of the drying device present in the form of a drying channel.
  • the application unit can be, for example, an anilox roller or a squeegee device.
  • the application of the latter method on the anilox roller is usually at the expense of production speed. It has also been shown that the anilox roller application is only possible with an already partially dried web and a wet-on-wet application can not be accomplished by this method.
  • the present invention therefore has for its object to provide a method in which by another unilateral wet-on-wet application step additives on the surface can be applied, which give the overlay more important properties.
  • any other resin additive dispersion can be applied to achieve a certain effect in the surface.
  • the wet-on-wet application and metering of the resin additive dispersion is achieved by passing the resin additive dispersion under sufficient pressure into the nip between doctor blades and applying it to the paper web.
  • the dosage of the introduced dispersion takes place via a rotating squeegee, which can be designed as a plain or wire squeegee and which can rotate both counter-rotating or the same direction.
  • the metered amount depends on the doctor blade surface, the direction of rotation and the speed.
  • a uniform concern of the paper web and thus a uniform application of the resin additive dispersion are achieved by a slight pressing of the paper web on the doctor, which is controlled by the strength of the wrap of the applicator.
  • a doctor blade on which the method according to the invention is based, it is ensured that small application quantities of a coating composition can be applied uniformly on one side wet-on-wet.
  • a great advantage of the invention is the fact that the entire drying device is available for efficient paper web drying.
  • the wet-on-wet application also ensures that there are no interfaces between the already applied resin and the new application layer can arise as they can occur when applied to a partially dried resin surface.
  • FIG. 1 schematically illustrated method 100 is used for the production of resin-impregnated papers, which should also be equipped with certain functionalities.
  • the method 100 is used in particular for producing abrasion-resistant overlays of laminate floors.
  • the method 100 begins with the processing of a so-called overlay base paper from a role, not shown here.
  • the paper web 10 is then pressed by the rollers 11 on the Anfeuchtwalze 12, which from the first resin pan 13 which applies the impregnating agent 14 in the form of a resin to the paper web 10 on one side.
  • the single-sided coated paper web 10 is then guided by means of the guide rollers 17 and can swell in this time by moisture and resin absorption in the fiber structure of the paper.
  • the thus impregnated paper web 10 is guided in a further process step over the guide rollers 25 to a spray nozzle over which a resin coarse corundum dispersion 27 is rinsed in excess to the paper web 10.
  • the desired application weight of the resin-corundum dispersion is then adjusted across the gap width between the metering rollers 26.
  • a coating composition 29 in the form of a fine corundum dispersion is applied as described above after application and dosing of the coarse corundum dispersion on the opposite paper side and metered via the doctor blade 32 (see also US Pat FIG. 2 ).
  • the coated paper web 10 is dried and adjusted in the residual moisture so that a well processable overlay is obtained.
  • the present invention is not limited in its embodiment to the above-mentioned, preferred embodiments. Rather, a number of variants are conceivable, which make use of the illustrated solution even with fundamentally different types of execution.
  • the doctor blades 31, 32 can have different configurations.
  • other metering devices can be used as pairs of rollers.
  • the method is not limited to the production of abrasion-resistant overlays with a top-side additive coat. Rather, the method can also be used for the production of non-abrasion-resistant overlays or other resin-impregnated papers, which should also be equipped with functionalities.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Paper (AREA)
  • Saccharide Compounds (AREA)
  • Laminated Bodies (AREA)
  • Coating By Spraying Or Casting (AREA)

Claims (7)

  1. Procédé de fabrication d'un revêtement, notamment pour laminés, comportant les étapes opératoires suivantes :
    a) déroulement d'un papier de revêtement de base d'un rouleau dans le but d'obtenir une bande de papier (10) ;
    b) humidification unilatérale de la bande de papier (10) avec un agent d'imprégnation (14) ;
    c) imprégnation de la bande de papier (10) dans son noyau et dosage de l'application d'un agent d'imprégnation prévu pour l'imprégnation ;
    d) application unilatérale humide dans humide d'une dispersion de résine/corindon brut (27) sur la bande de papier (10) et dosage de l'application ;
    e) application humide dans humide sur la face opposée d'une masse de revêtement (29) sur la bande de papier (10) ;
    f) dosage de la masse de revêtement appliquée (29) au moyen d'un dispositif de dosage, notamment d'au moins une racle (31, 32), jusqu'au poids d'application souhaité ;
    g) séchage de la bande de papier (10) en utilisant la totalité d'une longueur et d'une capacité de canal de séchage.
  2. Procédé selon la revendication 1, caractérisé en ce que, après imprégnation de la bande de papier (10), il y a un rinçage unilatéral de la bande de papier (10) par une dispersion de résine/corindon (27).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'application unilatérale humide dans humide de la masse de revêtement (29) prend la forme d'une application d'additif de résine.
  4. Procédé selon une des revendications précédentes, caractérisé en ce que la masse de revêtement (29) est conduite entre deux racles (31, 32).
  5. Procédé selon une des revendications précédentes, caractérisé en ce que la face inférieure de la bande de papier (10) est amenée contre la racle (31, 32) et raclée par la racle (31, 32).
  6. Procédé selon une des revendications précédentes, caractérisé en ce que la masse de revêtement (29) est appliquée de manière homogène.
  7. Procédé selon une des revendications précédentes, caractérisé en ce que la masse de revêtement (29) est acheminée par une fente d'arrivée (33) de la bande de papier (10).
EP09001209A 2008-02-12 2009-01-29 Procédé de fabrication d'une surcouche résistant à l'abrasion Revoked EP2090695B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09001209T PL2090695T3 (pl) 2008-02-12 2009-01-29 Sposób wytwarzania powłoki odpornej na szorowanie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008008808A DE102008008808A1 (de) 2008-02-12 2008-02-12 Verfahren zur Herstellung eines scheuerfesten Overlays

Publications (2)

Publication Number Publication Date
EP2090695A1 EP2090695A1 (fr) 2009-08-19
EP2090695B1 true EP2090695B1 (fr) 2010-04-21

Family

ID=40674000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09001209A Revoked EP2090695B1 (fr) 2008-02-12 2009-01-29 Procédé de fabrication d'une surcouche résistant à l'abrasion

Country Status (8)

Country Link
US (1) US20090208646A1 (fr)
EP (1) EP2090695B1 (fr)
AT (1) ATE465297T1 (fr)
CA (1) CA2653921A1 (fr)
DE (2) DE102008008808A1 (fr)
ES (1) ES2344819T3 (fr)
PL (1) PL2090695T3 (fr)
PT (1) PT2090695E (fr)

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Publication number Priority date Publication date Assignee Title
DE102010050141A1 (de) 2010-11-03 2012-05-03 Dekor-Kunststoffe Gmbh Verfahren zur Herstellung scheuerfester Overlays, insbesondere für Laminate sowie ein mit diesem Verfahren hergestelltes Overlay

Also Published As

Publication number Publication date
CA2653921A1 (fr) 2009-08-12
PL2090695T3 (pl) 2010-09-30
DE502009000013D1 (de) 2010-06-02
ES2344819T3 (es) 2010-09-07
DE102008008808A1 (de) 2009-08-13
PT2090695E (pt) 2010-07-22
US20090208646A1 (en) 2009-08-20
ATE465297T1 (de) 2010-05-15
EP2090695A1 (fr) 2009-08-19

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