EP1068083B1 - Method for producing laminate coatings, and laminate coating - Google Patents

Method for producing laminate coatings, and laminate coating Download PDF

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Publication number
EP1068083B1
EP1068083B1 EP99908834A EP99908834A EP1068083B1 EP 1068083 B1 EP1068083 B1 EP 1068083B1 EP 99908834 A EP99908834 A EP 99908834A EP 99908834 A EP99908834 A EP 99908834A EP 1068083 B1 EP1068083 B1 EP 1068083B1
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EP
European Patent Office
Prior art keywords
decorative paper
laminate
process according
aluminium oxide
covering layer
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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.)
Expired - Lifetime
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EP99908834A
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German (de)
French (fr)
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EP1068083A1 (en
Inventor
Dieter DÖHRING
Anton Ott
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
Douglas Technical Ltd
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Kronospan Technical Co Ltd
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Application filed by Kronospan Technical Co Ltd filed Critical Kronospan Technical Co Ltd
Priority to SI9930449T priority Critical patent/SI1068083T1/en
Publication of EP1068083A1 publication Critical patent/EP1068083A1/en
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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
    • 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
    • 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
    • B44C5/043—Ornamental plaques, e.g. decorative panels, decorative veneers containing wooden elements
    • 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

Definitions

  • the invention relates to a method for producing laminate coatings, the are particularly suitable and intended for floor slabs, which one with amino resin impregnated decorative paper and an abrasion-resistant cover layer arranged on it with particulate fine aluminum oxide (corundum) Invention such a laminate coating.
  • EP-A-0 329 154 (cf. Examples 15 and 16 there) describes a process for Manufacture of laminate coatings known, with particulate aluminum oxide a still wet decor paper impregnated with amino resin is sprinkled on and at subsequent drying, the alumina particles are enclosed in the resin.
  • the invention has for its object the manufacture of abrasion-resistant laminate coatings to make it more economical than before.
  • a laminate coating can be applied in one pass be manufactured for floor slabs or similar applications, the die Abrasion resistance of the laminate coating producing particles from fine Aluminum oxide or corundum are encapsulated on the surface of the coating, that they are the press plates or press belts for producing the laminate coatings cannot damage the machines or presses used.
  • the on the impregnated decor paper after sprinkling the particulate Covering layer of melamine resin containing aluminum oxide applied The fiber material is transparent so that the decor of the decorative paper is clearly visible. Because of the covering of the particles producing the abrasion resistance of the end product during the production of the laminate coating, even after prolonged use Press plates or press belts of the machine or press a graying and thus one The surface of the laminate coating produced does not deteriorate expect.
  • the surface of the laminate coating produced according to the invention remains clear because that applied as an encapsulation for the corundum particles Fiber fleece does not or does not change the visibility of the decor of the decorative paper affected, but on the other hand the press plates or press belts for the production of Laminate coating used against presses or other manufacturing machines protects against premature abrasion.
  • the laminate coatings according to the invention can, for example, on chipboard or fiberboard are attached, which previously on the top and / or Underside are each provided with a retreat position against default.
  • a decorative paper with a mass per unit area of 70 g / m 2 is first impregnated with melamine resin in an immersion bath, the mass after drying being 140 g / m 2 . Corundum is sprinkled on the still moist paper web in an amount of 20 g / m 2 .
  • the paper is then heated to a moisture content at a temperature of 180 ° C 15% intermediate drying.
  • a nonwoven fabric with a basis weight of 80 g / m 2 consisting of 80% melamine resin and 20% cellulose fibers with a length of 60 ⁇ m is then applied to this paper web. Then the final drying takes place at 180 ° C up to a humidity of 6.0 to 6.5%.
  • the impregnate thus produced is in a short cycle press at a temperature of 205 ° C, a specific pressure of 2.5 MPa and a pressing time of 20 s on one HDF carrier board pressed.
  • the laminate flooring obtained in this way fulfills the characteristic values according to the standards EN 438 and has an abrasion value IP of 10,000.
  • a decorative paper with a basis weight of 80 g / m 2 is impregnated with a melamine resin, the basis weight after the subsequent drying being 150 g / m 2 .
  • Fine-grained aluminum oxide in an amount of 8 g / m 2 is sprinkled on the still moist paper web.
  • the paper web is then dried at 210 ° C to a moisture content of 12%.
  • a fleece of 40 g / m 2 consisting of 85% melamine resin and 15% glass fibers with a length of 3 mm and a diameter of 10 ⁇ m is applied.
  • the further procedure corresponds to example 1.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Laminated Bodies (AREA)
  • Floor Finish (AREA)
  • Paper (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention relates to a method for producing laminate coatings, in particular, for floor plates. The floor plates comprise a decorative paper that is impregnated with an amino resin and comprise an abrasionproof covering layer which is arranged thereon and which is provided with particle-shaped, fine aluminum oxide (corundum). According to the inventive method, the particle-shaped aluminum oxide is spread onto the wet impregnated decorative paper before drying the same. The decorative paper treated in such a manner is then pre-dried or pre-condensed. After drying, a covering layer comprised of fibrous material containing melamine resin is applied to the pretreated decorative paper. Finally, the entire assembly is completely dried.

Description

Die Erfindung betrifft ein Verfahren zum Herstellen von Laminat-Beschichtungen, die insbesondere für Fußboden-Platten geeignet und bestimmt sind, welche ein mit Amino-Harz imprägniertes Dekorpapier und eine darauf angeordnete abriebfeste Abdeckschicht mit partikelformigem feinen Aluminiumoxyd (Korund) aufweist Außerdem betrifft die Erfindung eine derartige Laminat-Beschichtung.The invention relates to a method for producing laminate coatings, the are particularly suitable and intended for floor slabs, which one with amino resin impregnated decorative paper and an abrasion-resistant cover layer arranged on it with particulate fine aluminum oxide (corundum) Invention such a laminate coating.

Es ist bekannt (DE 195 08 797 C1), abriebfeste Laminat-Beschichtungen für Fußboden-Platten derart herzustellen, daß auf die Sichtfläche eines Dekorpapieres, nach dem Tränken desselben mit Harz und dem Trocknen bis auf eine Restfeuchte, ein abriebfeste Mineralbestandteile mit feiner Teilchengröße aufweitendes viskoses Gemisch aus Melamin-Harz, Cellulose-Fasern, Korund, Additiven und Wasser in einer solchen Menge aufgetragen wird, daß die Beschichtung nach dem Erreichen der Endfeuchte eine Dicke von 20 bis 60 µm aufweist, woraufhin der so beschichtete Dekorbogen in wenigstens einem weiteren Arbeitsschritt auf die Endfeuchte getrocknet wird.It is known (DE 195 08 797 C1), abrasion-resistant laminate coatings for floor panels to produce such that on the visible surface of a decorative paper, according to Soak it with resin and dry to a residual moisture, an abrasion-resistant Mineral components with a fine particle size expanding viscous mixture Melamine resin, cellulose fibers, corundum, additives and water in such an amount is applied that the coating has a thickness after reaching the final moisture has from 20 to 60 microns, whereupon the thus coated decorative sheet in at least a further step is dried to the final moisture.

Bei diesem vorbekannten Verfahren wird auf das mit Melamin-Harz getränkte und getrocknete Papier ein viskoses Gemisch, welches die Abriebfestigkeit des fertigen Produktes bestimmendes feinkörniges Aluminiumoxyd bzw. Korund enthält, aufgetragen. Die feinkörnigen Korund-Partikel sind in der aus dem viskosen Gemisch gebildeten Abdeckschicht mehr oder weniger gleichförmig verteilt und befinden sich somit auch an der Oberfläche der Abdeckschicht.In this previously known method is impregnated with melamine resin and dried paper is a viscous mixture, which shows the abrasion resistance of the finished Contains product-determining fine-grained aluminum oxide or corundum, applied. The fine-grained corundum particles are those formed from the viscous mixture Cover layer more or less uniformly distributed and are therefore also on the surface of the cover layer.

Es ist weiterhin bekannt, Laminat-Beschichtungen für Fußboden-Platten derart herzustellen, daß auf die Oberseite oder Sichtseite eines mit Amino-Harz bzw. Melamin-Harz imprägnierten Dekorpapieres ein Overlay aufgebracht wird, das auf der Oberseite eines aus Papier bestehenden Substrates die Abriebfestigkeit bewirkende feinkörnige Partikel aus Aluminiumoxyd bzw. Korund aufweist. It is also known to laminate coatings for floor panels like this produce that on the top or visible side of one with amino resin or melamine resin impregnated decorative paper an overlay is applied to the top of a substrate made of paper, the fine-grained abrasion resistance Has particles of aluminum oxide or corundum.

Diese beiden bekannten Verfahren erfordern zwei separate Verfahrensschritte, nämlich einerseits das Herstellen eines die Korund-Partikel enthaltenden separaten Gemisches und Auftragen desselben und andererseits die Herstellung eines separat aufzutragenden Overlays. Insofern sind diese vorbekannten Verfahren relativ kostspielig und damit wenig wirtschaftlich.These two known methods require two separate process steps, namely on the one hand the production of a separate mixture containing the corundum particles and Application of the same and on the other hand the production of a separately to be applied Overlays. In this respect, these previously known methods are relatively expensive and therefore little economically.

Ein weiterer und wesentlich bedeutsamerer Nachteil besteht darin, daß zum maschinellen Fertigstellen der Laminat-Beschichtungen verwendete Preßbleche bzw. Preßbänder von den an der Oberfläche der Laminate befindlichen Koriund-Partikel durch Abrieb beschädigt werden, was zu einer verhältnismäßig schnellen Vergrauung der Oberflächen der fertigen Laminat-Beschichtungen führt. Deshalb müssen die bei Anwendung der bekannten Herstellungstechniken verwendeten Preßbleche bzw. aus Blech bestehenden Preßbänder verhältnismäßig häufig an der Oberfläche nachgearbeitet bzw. nachgeschliffen werden, um ein Abstumpfen deren Oberflächen auszugleichen. Die Standzeiten der Preßbleche bzw. Preßbänder ist dementsprechend verhältnismäßig kurz.Another and much more significant disadvantage is that the machine Finishing of the laminate coatings used press plates or press tapes from the coriund particles on the surface of the laminates are damaged by abrasion be, resulting in a relatively quick graying of the finished surfaces Laminate coatings leads. Therefore, when using the known Manufacturing techniques used press plates or press belts made of sheet metal reworked or reground relatively frequently on the surface a dulling to even out their surfaces. The service life of the press plates or Accordingly, press belts are relatively short.

Das Nacharbeiten der Oberflächen der Preßbleche oder Preßbänder verursacht nicht nur hohe Bearbeitungskosten, sondern auch Stillstandszeiten der entsprechend ausgerüsteten Pressen, wodurch die Wirtschaftlichkeit bei der abriebfesten Herstellung der Laminat-Beschichtungen negativ beeinflußt wird.Reworking the surfaces of the press plates or press belts not only causes high processing costs, but also downtimes of the appropriately equipped Pressing, which makes the economy in the abrasion-resistant production of laminate coatings is adversely affected.

Weiterhin ist aus der EP-A-0 329 154 (vgl. dort die Beispiele 15 und 16) ein Verfahren zum Herstellen von Laminat-Beschichtungen bekannt, wobei partikelförmiges Aluminiumoxyd auf ein noch nasses mit Amino-Harz imprägniertes Dekorpapier aufgestreut wird und bei der darauffolgenden Trocknung die Aluminiumoxyd-Partikel in das Harz eingeschlossen werden.Furthermore, EP-A-0 329 154 (cf. Examples 15 and 16 there) describes a process for Manufacture of laminate coatings known, with particulate aluminum oxide a still wet decor paper impregnated with amino resin is sprinkled on and at subsequent drying, the alumina particles are enclosed in the resin.

Der Erfindung liegt die Aufgabe zugrunde, das Herstellen von abriebfesten Laminat-Beschichtungen wirtschaftlicher als bisher zu gestalten.The invention has for its object the manufacture of abrasion-resistant laminate coatings to make it more economical than before.

Diese Aufgabe wird erfindungsgemäß mit einem Verfahren gelöst, welches die Merkmale des Anspruches 1 aufweist.This object is achieved according to the invention with a method which has the features of claim 1.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der weiteren Patentansprüche.Advantageous embodiments of the invention are the subject of the others Claims.

Gemäß der vorliegenden Erfindung kann in einem Durchgang eine Laminat-Beschichtung für Fußboden-Platten oder ähnliche Anwendungen hergestellt werden, wobei die die Abriebfestigkeit der Laminat-Beschichtung erzeugenden Partikel aus feinem Aluminiumoxyd oder Korund derart an der Oberfläche der Beschichtung gekapselt sind, daß sie die Preßbleche bzw. Preßbänder der zum Herstellen der Laminat-Beschichtungen verwendeten Maschinen bzw. Pressen nicht beschädigen können.According to the present invention, a laminate coating can be applied in one pass be manufactured for floor slabs or similar applications, the die Abrasion resistance of the laminate coating producing particles from fine Aluminum oxide or corundum are encapsulated on the surface of the coating, that they are the press plates or press belts for producing the laminate coatings cannot damage the machines or presses used.

Die auf das imprägnierte Dekorpapier nach dem Aufstreuen des partikelförmigen Aluminiumoxyds aufgetragene Abdeckschicht aus Melamin-Harz enthaltendem Fasermaterial ist durchsichtig, so daß das Dekor des Dekorpapieres gut sichtbar ist. Wegen der Abdeckung der die Abriebfestigkeit des Endproduktes erzeugenden Partikel während der Herstellung der Laminat-Beschichtung ist auch nach längerem Gebrauch der Preßbleche oder Preßbänder der Maschine oder Presse eine Vergrauung und damit eine Verschlechterung der Oberfläche der hergestellten Laminat-Beschichtung nicht zu erwarten.The on the impregnated decor paper after sprinkling the particulate Covering layer of melamine resin containing aluminum oxide applied The fiber material is transparent so that the decor of the decorative paper is clearly visible. Because of the covering of the particles producing the abrasion resistance of the end product during the production of the laminate coating, even after prolonged use Press plates or press belts of the machine or press a graying and thus one The surface of the laminate coating produced does not deteriorate expect.

Mit anderen Worten, die Oberfläche der erfindungsgemäß hergestellten Laminat-Beschichtung bleibt klar, weil das als Kapselung für die Korund-Partikel aufgetragene Faser-Vlies die Sichtbarkeit des Dekors des Dekorpapieres nicht verändert bzw. nicht beeintächtigt, andererseits aber die Preßbleche oder Preßbänder der für die Herstellung der Laminat-Beschichtung verwendeten Pressen oder sonstigen Herstellungsmaschinen gegen vorzeitigen Abrieb schützt.In other words, the surface of the laminate coating produced according to the invention remains clear because that applied as an encapsulation for the corundum particles Fiber fleece does not or does not change the visibility of the decor of the decorative paper affected, but on the other hand the press plates or press belts for the production of Laminate coating used against presses or other manufacturing machines protects against premature abrasion.

Die erfindungsgemäßen Laminat-Beschichtungen können beispielsweise auf Spanplatten oder Faserplatten angebracht werden, welche zuvor an der Oberseite und/oder der Unterseite jeweils mit einer gegen Verzug bestimmten Rückzuglage versehen sind.The laminate coatings according to the invention can, for example, on chipboard or fiberboard are attached, which previously on the top and / or Underside are each provided with a retreat position against default.

Die Erfindung wird weiterhin anhand von zwei Austiihrungsbeispielen erläutert.The invention is further explained on the basis of two exemplary embodiments.

Beispiel 1:Example 1:

Ein Dekorpapier mit einer Flächenmasse von 70 g/m2 wird zunächst in einem Tauchbad mit Melaminharz getränkt, wobei die Masse nach Trocknen 140 g/m2 beträgt. Auf die noch feuchte Papierbahn wird Korund in einer Menge von 20 g/m2 aufgestreut. A decorative paper with a mass per unit area of 70 g / m 2 is first impregnated with melamine resin in an immersion bath, the mass after drying being 140 g / m 2 . Corundum is sprinkled on the still moist paper web in an amount of 20 g / m 2 .

Anschließend wird das Papier bei einer Temperatur von 180° C auf einen Feuchtegehalt von 15 % zwischengetrocknet.The paper is then heated to a moisture content at a temperature of 180 ° C 15% intermediate drying.

Auf diese Papierbahn wird sodann ein Faservlies mit einem Flächengewicht von 80 g/m2 bestehend aus 80 % Melaminharz und 20 % Cellulosefasern mit einer Länge von 60 µm aufgetragen. Anschließend erfolgt die Endtrocknung bei 180 °C bis zu einer Feuchte von 6,0 bis 6,5 %.A nonwoven fabric with a basis weight of 80 g / m 2 consisting of 80% melamine resin and 20% cellulose fibers with a length of 60 µm is then applied to this paper web. Then the final drying takes place at 180 ° C up to a humidity of 6.0 to 6.5%.

Das so hergestellte Imprägnat wird in einer Kurztaktpresse bei einer Temperatur von 205° C, einem spezifischen Druck von 2,5 MPa und einer Preßzeit von 20 s auf einer HDF-Trägerplatte verpreßt.The impregnate thus produced is in a short cycle press at a temperature of 205 ° C, a specific pressure of 2.5 MPa and a pressing time of 20 s on one HDF carrier board pressed.

Der so erhaltende Laminatbodenbelag erfüllt die Kennwerte nach der Norm EN 438 und hat einen Abriebwert IP von 10.000.The laminate flooring obtained in this way fulfills the characteristic values according to the standards EN 438 and has an abrasion value IP of 10,000.

Beispiel 2:Example 2:

Ein Dekorpapier mit einer Flächenmasse von 80 g/m2 wird mit einem Melaminharz getränkt, wobei die Flächenmasse nach dem anschließenden Trocknen 150 g/m2 beträgt. Auf die noch feuchte Papierbahn wird feinkörniges Aluminiumoxid in einer Menge von 8 g/m2 aufgestreut. Die Papierbahn wird sodann bei 210°C auf einen Feuchtegehalt von 12 % getrocknet. Anschließend wird ein Vlies von 40 g/m2, bestehend aus 85 % Melaminharz und 15 % Glasfasern mit einer Länge von 3 mm und einem Durchmesser von 10 µm, aufgetragen. Die weitere Vorgehensweise entspricht Beispiel 1.A decorative paper with a basis weight of 80 g / m 2 is impregnated with a melamine resin, the basis weight after the subsequent drying being 150 g / m 2 . Fine-grained aluminum oxide in an amount of 8 g / m 2 is sprinkled on the still moist paper web. The paper web is then dried at 210 ° C to a moisture content of 12%. Then a fleece of 40 g / m 2 consisting of 85% melamine resin and 15% glass fibers with a length of 3 mm and a diameter of 10 µm is applied. The further procedure corresponds to example 1.

Claims (6)

  1. Process for producing laminate coatings, in particular for floor tiles, which comprises a patterned or decorative paper impregnated with a melamine resin and a wear-resistant covering layer provided thereon with a particulate fine aluminium oxide (corundum),
    characterised in that
    the particulate aluminium oxide is spread on to the still wet impregnated decorative paper before drying, the resulting decorative paper is then pre-dried or pre-condensed, after the predrying a covering layer of fibre material containing melamine resin is applied on to the pre-treated decorative paper and the whole is finally dried.
  2. Process according to Claim 1, characterised in that a fibre fleece containing melamine resin is applied to the decorative paper as the covering layer.
  3. Process according to Claim 1 or 2, characterised in that aluminium oxide or corundum having a particle size of about 125 µ-m is spread on the decorative paper.
  4. Process according to one of Claims 1 to 3, characterised in that the density of the coated decorative paper after drying amounts to about 140 to 150 g/m3.
  5. Process according to one of Claims 1 to 4, characterised in that the aluminium oxide is spread in a quantity of about 20 g/m2.
  6. Process according to one of Claims 1 to 4, characterised in that the aluminium oxide is spread in a quantity of about 8 g/m2.
EP99908834A 1999-01-26 1999-01-26 Method for producing laminate coatings, and laminate coating Expired - Lifetime EP1068083B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9930449T SI1068083T1 (en) 1999-01-26 1999-01-26 Method for producing laminate coatings, and laminate coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1999/000606 WO2000044576A1 (en) 1999-01-26 1999-01-26 Method for producing laminate coatings, and laminate coating

Publications (2)

Publication Number Publication Date
EP1068083A1 EP1068083A1 (en) 2001-01-17
EP1068083B1 true EP1068083B1 (en) 2003-10-08

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Country Status (14)

Country Link
EP (1) EP1068083B1 (en)
CN (1) CN1094840C (en)
AT (1) ATE251551T1 (en)
AU (1) AU2830799A (en)
CZ (1) CZ300493B6 (en)
DE (1) DE59907294D1 (en)
DK (1) DK1068083T3 (en)
ES (1) ES2205781T3 (en)
HK (1) HK1035168A1 (en)
PL (1) PL188357B1 (en)
RU (1) RU2213668C2 (en)
SI (1) SI1068083T1 (en)
SK (1) SK285185B6 (en)
WO (1) WO2000044576A1 (en)

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CN105587094A (en) * 2015-09-17 2016-05-18 大块建材开发(江苏)有限公司 Method for making imitated solid wood and imitated stone plastic floor

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HK1035168A1 (en) 2001-11-16
CZ20003383A3 (en) 2001-03-14
CN1292754A (en) 2001-04-25
RU2213668C2 (en) 2003-10-10
AU2830799A (en) 2000-08-18
CN1094840C (en) 2002-11-27
PL343240A1 (en) 2001-07-30
CZ300493B6 (en) 2009-06-03
WO2000044576A1 (en) 2000-08-03
SI1068083T1 (en) 2004-02-29
DE59907294D1 (en) 2003-11-13
PL188357B1 (en) 2005-01-31
EP1068083A1 (en) 2001-01-17
DK1068083T3 (en) 2004-01-26
ES2205781T3 (en) 2004-05-01
SK14012000A3 (en) 2001-06-11
ATE251551T1 (en) 2003-10-15

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