EP1068394A1 - Method for impregnating decorative papers - Google Patents

Method for impregnating decorative papers

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Publication number
EP1068394A1
EP1068394A1 EP99973654A EP99973654A EP1068394A1 EP 1068394 A1 EP1068394 A1 EP 1068394A1 EP 99973654 A EP99973654 A EP 99973654A EP 99973654 A EP99973654 A EP 99973654A EP 1068394 A1 EP1068394 A1 EP 1068394A1
Authority
EP
European Patent Office
Prior art keywords
parts
amino resin
decorative paper
corundum
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.)
Granted
Application number
EP99973654A
Other languages
German (de)
French (fr)
Other versions
EP1068394B1 (en
Inventor
Dieter DÖHRING
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.)
Lignum Technologies AG
Original Assignee
Kronospan Technical Co Ltd
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8167200&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1068394(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kronospan Technical Co Ltd filed Critical Kronospan Technical Co Ltd
Priority to EP20020006502 priority Critical patent/EP1270811B1/en
Priority to AT02006502T priority patent/ATE256786T1/en
Publication of EP1068394A1 publication Critical patent/EP1068394A1/en
Application granted granted Critical
Publication of EP1068394B1 publication Critical patent/EP1068394B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • 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
    • D21H27/28—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 treated to obtain specific resistance properties, e.g. against wear or weather
    • 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
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/26—Aminoplasts
    • 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
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/62—Macromolecular organic compounds or oligomers thereof obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • D21H19/80—Paper comprising more than one coating
    • D21H19/82—Paper comprising more than one coating superposed
    • D21H19/826—Paper comprising more than one coating superposed two superposed coatings, the first applied being pigmented and the second applied being non-pigmented
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • 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
    • Y10T428/27—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.]
    • Y10T428/273—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.] of coating
    • Y10T428/277—Cellulosic substrate
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31971—Of carbohydrate
    • Y10T428/31993—Of paper

Definitions

  • the invention relates to a method for impregnating decorative papers used for producing highly abrasion-resistant laminate flooring materials, in which the decorative paper is first moistened with an amino resin and thereby impregnated, and the resin content is regulated in the process.
  • the mass is applied by spreading rollers in the wet phase directly after impregnation or in an intermediate drying stage.
  • the corundum-containing mass is located in storage tanks in which dead zones with little mass movement are formed. Therefore, the corundum particles settle quickly, which results in inhomogeneity in the application of corundum on the decorative paper and thus considerable fluctuations in the abrasion values of laminate flooring materials produced in this way
  • viscosity-increasing substances as a rule cellulose derivatives, have been added to the composition containing the corundum mixture.
  • the corundum should be relatively fine-grained, since lighter or finer corundum particles settle less quickly.
  • the use of cellulose derivatives leads to an optical graying of the surface of the laminate flooring materials produced.
  • the invention has for its object to avoid the previously described disadvantages of the known manufacture of highly abrasion-resistant laminate flooring materials and to be able to produce highly abrasion-resistant decorative laminate flooring materials, the decorative paper showing the surface structure being coated uniformly with particulate corundum or aluminum oxide without the surface of the Floor materials produced in this way have graying.
  • One of the essential differences of the method according to the invention is that the like for impregnating the decorative paper and for applying the abrasion bodies
  • Corundum particles or aluminum oxide particles used mass or dispersion sprayed or applied in the nozzle principle.
  • the nozzle principle has the advantage over roller application that the dispersion containing the abrasive particles, such as corundum particles, is constantly and completely circulated before application and is therefore moved more or less uniformly. There are therefore no signs of sedimentation leading to irregularities. It is therefore not necessary to add viscosity-increasing substances or substances. Instead, flow aids can even be used, which bring about a better distribution of the abrasion material, such as corundum, which is advantageous in the press used to compress the material.
  • Another advantage is that it is not necessary to pay attention to a particular fine grain of the corundum or aluminum oxide, but that corundum or other particulate abrasion material with a significantly larger or coarser grain size can be used. This in turn means that relatively small amounts
  • Corundum or other particulate abrasion material is required to achieve higher abrasion values.
  • Another advantage of the invention is that, as in the known application of the mass or dispersion used for impregnation by means of spreading rollers, it is not necessary to drive at relatively slow impregnation speeds of, for example, 18 to 25 m / min in order to achieve a somewhat constant
  • impregnation speeds between 40 to 50 m / min can be achieved or realized.
  • a special dispersion is first premixed in a storage container with an agitator. 200 kg melamine resin (Kauramin impregnating resin 786 from the company
  • a standard impregnation channel from VITS is provided after the impregnation unit, which is equipped with a slide-in unit consisting of a spreader roller, a deflection roller, a nozzle gap with a collecting trough, a pair of metering rollers and wire squeegees is arranged.
  • a decorative paper web with a basis weight of 70 g / m 2 is through the
  • Impregnation unit and the additional construction performed.
  • a resin application of 75 g / m 2 (determined after drying) is first set. When this value is reached, the nozzle is put into operation and the special dispersion is applied. A final mass of 155 g / m 2 is set via the second pair of metering rollers. The paper thus treated is passed through a dryer at a speed of 45 m / min. The residual moisture is 6.1%.
  • the decor paper is then pressed in a short-cycle press onto an HDF carrier board (press temperature 180 C, press time 20 s). You get a brilliant surface that meets the requirements of pr-EN 13329 and an abrasion value of IP

Abstract

Decorative paper for use in high abrasion resistant laminate flooring is impregnated by an amine resin. The paper has an additional layer of amine resin. The layer weighs 100-250% of the dry weight of the paper.

Description

Verfahren zum Imprägnieren von DekorpapierenProcess for impregnating decorative paper
Die Erfindung betrifft ein Verfahren zum Imprägnieren von zum Herstellen hochabriebfester Laminat-Fußbodenmaterialien verwendeten Dekorpapieren, bei dem das Dekorpapier zunächst mit einem Aminoharz angefeuchtet und dadurch imprägniert sowie dabei der Harzgehalt geregelt wird.The invention relates to a method for impregnating decorative papers used for producing highly abrasion-resistant laminate flooring materials, in which the decorative paper is first moistened with an amino resin and thereby impregnated, and the resin content is regulated in the process.
Es ist bekannt (Patent von Graudenz u.a.), für Laminat-Fußbodenmaterialien hochabriebfeste Dekorpapierimprägnate herzustellen. Bei diesem bekannten Verfahren wird nach dem eigentlichen Imprägnieren auf das Dekorpapier eine Masse aufgebracht, bei der partikelformiges Korund durch spezielle viskositätserhöhende Substanzen relativ stabil in einer die Masse bildenden Dispersion gehalten wird.It is known (Graudenz et al. Patent) to produce highly abrasion-resistant decorative paper impregnates for laminate flooring materials. In this known method, after the actual impregnation, a mass is applied to the decorative paper, in which particulate corundum is kept relatively stable in a dispersion forming the mass by means of special viscosity-increasing substances.
Dabei wird die Masse mittels Aufstreichwalzen noch in der Naßphase direkt nach dem Imprägnieren oder aber in einer Zwischentrocknungsstufe aufgetragen.The mass is applied by spreading rollers in the wet phase directly after impregnation or in an intermediate drying stage.
Bei dieser bekannten Technologie der Verwendung von Aufstreichwalzen befindet sich die Korund-haltige Masse in Vorratswannen, in denen sich Totzonen mit geringer Massenbewegung bilden. Daher setzen sich die Korund-Partikel schnell ab, was Inhomogenität im Korundauftrag auf dem Dekorpapier und damit erhebliche Schwankungen in den Abriebwerten so hergestellter Laminat-Fußbodenmaterialien zurIn this known technology of the use of spreading rollers, the corundum-containing mass is located in storage tanks in which dead zones with little mass movement are formed. Therefore, the corundum particles settle quickly, which results in inhomogeneity in the application of corundum on the decorative paper and thus considerable fluctuations in the abrasion values of laminate flooring materials produced in this way
Folge hat.Consequence.
Aus diesem Grund werden bisher viskositätserhöhende Substanzen, in der Regel Cellulosederivate, der die Korundmischung enthaltenden Masse zugesetzt. Außerdem soll der Korund relativ feinkörnig sein, da sich leichtere bzw. feinere Korund-Partikel weniger schnell absetzen. Der Einsatz von Cellulosederivaten führt jedoch zu einer optischen Vergrauung der Oberfläche der hergestellten Laminat-Fußbodenmaterialien.For this reason, viscosity-increasing substances, as a rule cellulose derivatives, have been added to the composition containing the corundum mixture. In addition, the corundum should be relatively fine-grained, since lighter or finer corundum particles settle less quickly. However, the use of cellulose derivatives leads to an optical graying of the surface of the laminate flooring materials produced.
ߣSTATIGUNGSK0PI£ Je feinkörniger der Korund ist, desto mehr muß anteilmäßig auf das Dekorpapier aufgetragen werden, um ausreichende Abriebwerte zu erzielen. Auch dadurch wird eine Vergrauung der Oberfläche der hergestellten Materialien herbeigeführt.ß £ STATIGUNGSK0PI £ The more fine-grained the corundum, the more proportionally must be applied to the decorative paper in order to achieve sufficient abrasion values. This also causes graying of the surface of the materials produced.
Der Erfindung liegt die Aufgabe zugrunde, die zuvor geschilderten Nachteile der bekannten Herstellung hochabriebfester Laminat-Fußbodenmaterialien zu vermeiden und hochabriebfeste dekorative Laminat-Fußbodenmaterialien herstellen zu können, wobei das die Oberflächenstruktur zeigende Dekorpapier gleichmäßig mit partikelförmigem Korund oder Aluminiumoxid beschichtet ist, ohne daß die Oberfläche der so hergestellten Fußbodenmaterialien eine Vergrauung aufweist.The invention has for its object to avoid the previously described disadvantages of the known manufacture of highly abrasion-resistant laminate flooring materials and to be able to produce highly abrasion-resistant decorative laminate flooring materials, the decorative paper showing the surface structure being coated uniformly with particulate corundum or aluminum oxide without the surface of the Floor materials produced in this way have graying.
Diese Aufgabe wird gemäß der vorliegenden Erfindung mit einem Verfahren gelöst, welches die Merkmale des unabhängigen Patentanspruches 1 aufweist.This object is achieved according to the present invention with a method which has the features of independent claim 1.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind Gegenstand der abhängigen Unteransprüche.Advantageous refinements and developments of the invention are the subject of the dependent subclaims.
Einer der wesentlichen Unterschiede des erfindungsgemäßen Verfahrens besteht darin, daß die zum Imprägnieren des Dekorpapiers und zum Aufbringen der Abriebkörper wieOne of the essential differences of the method according to the invention is that the like for impregnating the decorative paper and for applying the abrasion bodies
Korund-Partikel oder Aluminiumoxid-Partikel verwendete Masse oder Dispersion aufgedüst bzw. im Düsenprinzip aufgetragen wird.Corundum particles or aluminum oxide particles used mass or dispersion sprayed or applied in the nozzle principle.
Das Düsenprinzip hat gegenüber dem Walzenauftrag den Vorteil, daß die die Abriebkörper wie Korund-Partikel enthaltende Dispersion vor dem Auftrag ständig und vollständig umgewälzt und damit mehr oder weniger gleichförmig bewegt wird. Somit sind zu Ungleichförmigkeiten führende Absetzerscheinungen nicht festzustellen. Deshalb kann auch auf die Beimischung von Viskositätserhöhenden Stoffen oder Substanzen verzichtet werden. Vielmehr können sogar Fließhilfsstoffe eingesetzt werden, die eine bessere Verteilung des Abriebmaterials wie Korund bewirken, was in der zum Komprimieren des Materials verwendeten Presse vorteilhaft ist. Ein weiterer Vorteil besteht darin, daß nicht auf eine besondere Feinkörnigkeit des Korunds oder Aluminiumoxids geachtet werden muß, sondern daß Korund oder anderes partikelformiges Abriebmaterial mit deutlich größerer oder gröberer Korngröße eingesetzt werden kann. Das hat wiederum zur Folge, daß relativ geringe MengenThe nozzle principle has the advantage over roller application that the dispersion containing the abrasive particles, such as corundum particles, is constantly and completely circulated before application and is therefore moved more or less uniformly. There are therefore no signs of sedimentation leading to irregularities. It is therefore not necessary to add viscosity-increasing substances or substances. Instead, flow aids can even be used, which bring about a better distribution of the abrasion material, such as corundum, which is advantageous in the press used to compress the material. Another advantage is that it is not necessary to pay attention to a particular fine grain of the corundum or aluminum oxide, but that corundum or other particulate abrasion material with a significantly larger or coarser grain size can be used. This in turn means that relatively small amounts
Korund oder sonstiges partikelformiges Abriebmaterial benötigt wird, um höhere Abrieb werte zu erreichen.Corundum or other particulate abrasion material is required to achieve higher abrasion values.
Die Folge dieser Maßnahmen und Vorteile ist, daß besonders transparente und brilliante Oberflächen von Laminat-Fußbodenmaterialien erfindungsgemäß erzielt werden können.The consequence of these measures and advantages is that particularly transparent and brilliant surfaces of laminate flooring materials can be achieved according to the invention.
Ein weiterer Vorteil der Erfindung liegt darin, daß man nicht, wie beim bekannten Auftragen der zum Imprägnieren verwendeten Masse oder Dispersion mittels Aufstreichwalzen mit verhältnismäßig langsamen Imprägniergeschwindigkeiten von beispielsweise 18 bis 25 m/min fahren muß, um einen einigermaßen gleichbleibendenAnother advantage of the invention is that, as in the known application of the mass or dispersion used for impregnation by means of spreading rollers, it is not necessary to drive at relatively slow impregnation speeds of, for example, 18 to 25 m / min in order to achieve a somewhat constant
Auftrag zu gewährleisten, sondern daß man mit dem erfindungsgemäßen Verfahren, bei welchem die Masse bzw. Dispersion mittels Düsen aufgetragen wird, Imprägniergeschwindigkeiten zwischen 40 bis 50 m/min erreichen bzw. realisieren kann.To ensure order, but that with the method according to the invention, in which the mass or dispersion is applied by means of nozzles, impregnation speeds between 40 to 50 m / min can be achieved or realized.
Die Erfindung wird nachstehend weiterhin anhand von Ausführungsbeispielen näher erläutert.The invention is further explained below using exemplary embodiments.
Beispiel 1 :Example 1 :
In einem Vorratsbehälter mit Rührwerk wird zunächst eine Spezialdispersion vorgemischt. Dazu werden 200 kg Melaminharz (Kauramin Tränkharz 786 der FirmaA special dispersion is first premixed in a storage container with an agitator. 200 kg melamine resin (Kauramin impregnating resin 786 from the company
BASF), 10 kg Wasser, 1,5 kg eines Netzmittels, 0,4 kg eines Trennmittels und 1,5 kg Härter (H 527 der Firma BASF) verrührt. Anschließend erfolgt die Zugabe von 80 kg Korund mit einer mittleren Korngröße von 135 μm. Nach 10 min Rühren werden 25 kg 6-Caprolactam und 0,9 kg eines marktüblichen Silanhaftvermittlers zugefügt.BASF), 10 kg of water, 1.5 kg of a wetting agent, 0.4 kg of a release agent and 1.5 kg of hardener (H 527 from BASF). Then 80 kg of corundum with an average grain size of 135 μm are added. After 10 minutes of stirring, 25 kg of 6-caprolactam and 0.9 kg of a commercially available silane coupling agent are added.
Ein Standardimprägnierkanal der Firma VITS ist nach dem Imprägnierwerk vorgesehen, der mit einem Einschubwerk, bestehend aus einer Breitstreckwalze, einer Umlenkwalze, einem Düsenspalt mit Auffangwanne, einem Dosierwalzenpaar sowie Drahtrakel walzen, angeordnet ist.A standard impregnation channel from VITS is provided after the impregnation unit, which is equipped with a slide-in unit consisting of a spreader roller, a deflection roller, a nozzle gap with a collecting trough, a pair of metering rollers and wire squeegees is arranged.
Eine Dekorpapierbahn mit einer Flächenmasse von 70 g/m2 wird durch dasA decorative paper web with a basis weight of 70 g / m 2 is through the
Imprägnierwerk und die Zusatzkonstruktion geführt. Mit dem Standardimprägnierwerk wird zunächst ein Harzauftrag von 75 g/m2 (ermittelt nach dem Trocknen) eingestellt. Ist dieser Wert erreicht, wird die Düse in Betrieb gesetzt und die Spezialdispersion aufgebracht. Über das zweite Dosierwalzenpaar wird eine Endmasse von 155 g/m2 eingestellt. Das so behandelte Papier wird durch Trockner mit einer Geschwindigkeit von 45 m/min gefahren. Die Restfeuchte beträgt 6,1 % .Impregnation unit and the additional construction performed. With the standard impregnation unit, a resin application of 75 g / m 2 (determined after drying) is first set. When this value is reached, the nozzle is put into operation and the special dispersion is applied. A final mass of 155 g / m 2 is set via the second pair of metering rollers. The paper thus treated is passed through a dryer at a speed of 45 m / min. The residual moisture is 6.1%.
Das Dekorpapier wird anschließend in einer Kurztaktpresse auf eine HDF-Trägerplatte gepreßt (Preßtemperatur 180 C, Preßzeit 20 s). Man erhält eine brilliante Oberfläche, welche die Anforderungen nach pr-EN 13329 erfüllt und einen Abriebwert von IPThe decor paper is then pressed in a short-cycle press onto an HDF carrier board (press temperature 180 C, press time 20 s). You get a brilliant surface that meets the requirements of pr-EN 13329 and an abrasion value of IP
12.000 aufweist.Has 12,000.
Beispiel 2:Example 2:
Wie Beispiel 1. Anstelle von Korund wird partikelformiges Siliciumcarbid mit einer mittleren Korngröße von 125 μm verwendet. Es wird ein dunkelfarbiges Dekorpapier eingesetzt.As example 1. Instead of corundum, particulate silicon carbide with an average grain size of 125 μm is used. A dark colored decorative paper is used.
Beispiel 3:Example 3:
Wie Beispiel 1. Anstelle von Korund wird jedoch eine Mischung aus 75 % Aluminiumoxid mit einer mittleren Korngröße von 125 μm und 25 % Siliciumcarbid mit gleicher mittlerer Korngröße eingesetzt.Like example 1. Instead of corundum, however, a mixture of 75% aluminum oxide with an average grain size of 125 μm and 25% silicon carbide with the same average grain size is used.
G/hw G / hw

Claims

Patentansprüche claims
1. Verfahren zum Imprägnieren von zum Herstellen hochabriebfester Laminat- Fußbodenmaterialien verwendeter Dekorpapiere, bei dem das Dekorpapier zunächst mit einem Aminoharz angefeuchtet und dadurch imprägniert wird, wobei die Menge des Harzes mittels Dosierwalzen geregelt wird, d a d u r c h g e k e n n z e i c h n e t , d a ß auf das angefeuchtete nasse Dekorpapier zusätzlich eine Schicht aus einem Aminoharz in spezieller Dispersion aufgedüst wird, wobei die endgültige Flächenmasse - bezogen auf die Trockenmasse des Rohpapiers - 100 % bis 250 % beträgt.1. A method of impregnating decorative paper used for producing highly abrasion-resistant laminate flooring materials, in which the decorative paper is first moistened with an amino resin and thereby impregnated, the amount of resin being regulated by means of metering rollers, characterized in that ß in addition to the moistened wet decorative paper Layer of an amino resin is sprayed in a special dispersion, the final basis weight - based on the dry weight of the base paper - being 100% to 250%.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß Dispersion aus 100 Teilen eines Aminoharzes, 20 bis 95 Teilen abrasiver Substanz, 0,5 bis 2,5 Teilen eines Silanhaftvermittlers, 5 bis 25 Teilen eines Fließhilfsstoffes, 0,1 bis 0,4 Teilen eines Netzmittels, 0,05 bis 0,4 Teilen eines Trennmittels und eines Aminoharzhärters verwendet wird.2. The method according to claim 1, characterized in that dispersion of 100 parts of an amino resin, 20 to 95 parts of abrasive substance, 0.5 to 2.5 parts of a silane coupling agent, 5 to 25 parts of a flow aid, 0.1 to 0.4 Parts of a wetting agent, 0.05 to 0.4 parts of a parting agent and an amino resin hardener are used.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß als Aminoharz ein Melaminharz verwendet wird.3. The method according to claim 1 or 2, characterized in that a melamine resin is used as amino resin.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß als Fließhilfsstoff Polyglycolether, E-Caprolactam oder Butandiol verwendet wird.4. The method according to any one of claims 1 to 3, characterized in that polyglycol ether, E-caprolactam or butanediol is used as the flow aid.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß als abrasive Substanz Siliciumcarbid mit einer durchschnittlichen Korngröße von 60 bis5. The method according to any one of claims 1 to 4, characterized in that silicon carbide with an average grain size of 60 to as the abrasive substance
160 μm verwendet wird. 160 μm is used.
6. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß als abrasive Substanz Aluminiumoxid in Form von Korund oder aus der Schmelze mit einer Korngröße von 60 bis 160 μm verwendet wird.6. The method according to any one of claims 1 to 4, characterized in that aluminum oxide in the form of corundum or from the melt with a grain size of 60 to 160 microns is used as the abrasive substance.
7. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß ein Gemisch aus Siliciumcarbid und Aluminiumoxid als abrasive Substanz in beliebiger Mischung verwendet wird. 7. The method according to any one of claims 1 to 4, characterized in that a mixture of silicon carbide and aluminum oxide is used as an abrasive substance in any mixture.
EP99973654A 1999-01-26 1999-01-26 Method for impregnating decorative papers Revoked EP1068394B1 (en)

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EP20020006502 EP1270811B1 (en) 1999-01-26 1999-01-26 Method for impregnating decorative papers
AT02006502T ATE256786T1 (en) 1999-01-26 1999-01-26 METHOD FOR IMPREGNATION OF DECORATIVE PAPERS

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AU3252099A (en) 2000-08-18
CN100523375C (en) 2009-08-05
SK286684B6 (en) 2009-03-05
WO2000044984A1 (en) 2000-08-03
CN1292840A (en) 2001-04-25
US6835421B1 (en) 2004-12-28
HK1035219A1 (en) 2001-11-16
DE29917947U1 (en) 2000-03-09
US7569270B2 (en) 2009-08-04
DE59907803D1 (en) 2003-12-24
PT1068394E (en) 2004-03-31
EP1270811B1 (en) 2003-12-17
PT1270811E (en) 2004-04-30
ATE254692T1 (en) 2003-12-15
US20060134405A1 (en) 2006-06-22
EP1068394B1 (en) 2003-11-19
SK14002000A3 (en) 2001-06-11

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