EP1419902B1 - Method for producing a structured decoration in a plate of wooden material - Google Patents

Method for producing a structured decoration in a plate of wooden material Download PDF

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Publication number
EP1419902B1
EP1419902B1 EP03021070A EP03021070A EP1419902B1 EP 1419902 B1 EP1419902 B1 EP 1419902B1 EP 03021070 A EP03021070 A EP 03021070A EP 03021070 A EP03021070 A EP 03021070A EP 1419902 B1 EP1419902 B1 EP 1419902B1
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EP
European Patent Office
Prior art keywords
decoration
relief
wood
cover layer
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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EP03021070A
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German (de)
French (fr)
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EP1419902A1 (en
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Kronotec AG
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Kronotec AG
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Publication of EP1419902A1 publication Critical patent/EP1419902A1/en
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00Coverings or linings, e.g. for walls or ceilings
    • E04F13/07Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44BMACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44BMACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/0052Machines or apparatus for embossing decorations or marks, e.g. embossing coins by pressing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44CPRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/24Pressing or stamping ornamental designs on surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44CPRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00Processes for producing special ornamental bodies
    • B44C5/04Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/043Ornamental plaques, e.g. decorative panels, decorative veneers containing wooden elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44CPRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00Processes for producing special ornamental bodies
    • B44C5/04Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/0469Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00Flooring
    • E04F15/02Flooring or floor layers composed of a number of similar elements
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24612Composite web or sheet

Definitions

  • the invention relates to a method for producing a decoration, in particular a wooden decoration, and a relief corresponding to the decor at least on the top of a wood-based panel, which in a press by means of a press plate with a previously applied to the top of a synthetic resin or impregnated with a melamine resin Paper layer existing cover layer is pressed, wherein the relief of a co-operating with the pressure plate die is pressed during pressing.
  • Such a method is known to coat a wood fiber board (MDF, HDF, chipboard or the like) to give it the appearance of a real wood panel.
  • MDF wood fiber board
  • HDF chipboard
  • Such panels are then used for furniture construction or to cover walls, ceilings or floors.
  • the desired decor wood grain, parquet, tile, etc.
  • the printed paper is later placed on a wood fiber board, possibly covered with a layer of synthetic resin and then in a Press pressed under the influence of temperature with the wood fiber board, wherein the synthetic resin layer melts.
  • the upper press plate The press is designed as a die and provided with a relief that corresponds to the decor. When pressing depressions are then formed in the resin layer, for example, the surface of a wood panel or the joints of laid tiles simulate to form a natural as possible surface on the wood-based panel.
  • the paper web changes in dimensions.
  • the expert speaks of the paper growing.
  • the paper grows both in length (length growth) and in width (width growth). Paper growth is not predictable and is up to 1%. With a standard press length of 5.6 m, the paper thus grows more than 5 cm.
  • the matrix which impresses the relief in the synthetic resin layer is formed corresponding to the desired structure of the decoration, and the paper growth can not be taken into account because it is incomprehensible.
  • the relief does not match the decor, which makes it impossible to imitate a real wood surface. Even more critical are the deviations between the decorative structure and relief, for example, in a tile pattern, as it is used for floor panels to assess. If the relief supporting the printed joint is not stamped on the joint, but next to it, then there is a serious lack of quality.
  • the method explained in the introduction is intended to be improved so that the decoration and relief also correspond to one another on the finished plate.
  • the decoration is no longer printed on the paper but basically on the cover layer, which takes place at the same time as the embossing of the relief, the relief and structure of the decor are completely congruent with each other, so that a very high-quality surface appearance is achieved.
  • This high-quality appearance is particularly advantageous when the wood fiber board for furniture construction, for room doors or the like, for example, floors to be used.
  • the die is coated with paint before the pressing process and the decor is formed by coloring the relief.
  • the paint combines with the synthetic resin during the pressing of the cover layer. This then achieves a smudge-proof surface.
  • a monochrome paper layer is placed on the plate, on which then the cover layer made of synthetic resin is placed.
  • the surface of the top of the plate can also be dyed (painted) or printed prior to applying the top layer.
  • a multi-colored paper layer can be placed on top of the plate on which then the top layer of synthetic resin is placed.
  • a plate produced by the method from a wood material, in particular MDF or HDF, with a provided with a decor and an embossed relief surface is characterized in that the decor is formed by introduced into the structure of the relief color.
  • the decor is a wood decor.
  • Chipboard medium density fibreboard (MDF), high density fibreboard (HDF) or OSB (Oriented Strand Board) may be considered as wood-based panels used as backing plates for finishing.
  • MDF medium density fibreboard
  • HDF high density fibreboard
  • OSB Oriented Strand Board
  • carrier plates are produced by pressing corresponding wood fibers mixed with synthetic resin.
  • a single or multi-colored paper layer is placed, which is impregnated with melamine resin.
  • another layer of a synthetic resin can be placed.
  • the plate is then fed to a press, where under high pressure and temperature, the cover layer is pressed to the plate, wherein the resin melts and forms a firm connection with the top of the support plate.
  • the upper press plate of the press is designed as a die. It has the negative / positive of the relief to be embossed into the surface of the plate. This relief can be the reproduction of a wood grain or of joints of a tile mirror. This relief projecting over the surface of the press plate is coated with a printing ink before the pressing process. When pressing the resin melts, the structure of the relief forms as a depression in the resin layer and at the same time the color is transferred to the recesses of the relief and connects to the liquid resin.

Abstract

Production of a pattern and a corresponding relief on the upper side of a wood composite plate by pressing with a plate with a previously applied plastics cover layer on the upper side of the composite so as to produce a relief from a matrix operating with the pressing plate is such that the pattern and the relief are introduced simultaneously into the cover layer. An Independent claim is also included a process in which the cover layer is of melamine resin-impregnated paper.

Description

Die Erfindung betrifft ein Verfahren zum Erzeugen eines Dekors, insbesondere eines Holzdekors, und eines zum Dekor korrespondierenden Reliefs mindestens auf der Oberseite einer Holzwerkstoffplatte, die in einer Presse mittels einer Pressplatte mit einer zuvor auf die Oberseite aufgebrachten aus einem Kunstharz oder aus einer mit Melaminharz getränkten Papierschicht bestehenden Deckschicht verpresst wird, wobei das Relief von einer mit der Pressplatte zusammenwirkenden Matrize beim Verpressen geprägt wird.The invention relates to a method for producing a decoration, in particular a wooden decoration, and a relief corresponding to the decor at least on the top of a wood-based panel, which in a press by means of a press plate with a previously applied to the top of a synthetic resin or impregnated with a melamine resin Paper layer existing cover layer is pressed, wherein the relief of a co-operating with the pressure plate die is pressed during pressing.

Ein solches Verfahren ist bekannt, um eine Holzfaserplatte (MDF, HDF, Spanplatte oder dergleichen) zu beschichten, um ihr die Optik einer Echtholzplatte zu verleihen. Solche Platten werden dann zum Möbelbau oder zur Verkleidung von Wänden, Decken oder Fussböden verwendet. Das gewünschte Dekor (Holzmaserung, Parkett, Fliese usw.) wird auf eine Papierbahn aufgedruckt, die anschlieβend mit Kunstharz beschichtet und auf eine Rolle aufgerollt oder in Bögen abgelegt wird. Das bedruckte Papier wird später dann auf eine Holzfaserplatte aufgelegt, gegebenenfalls mit einer Lage aus Kunstharz abgedeckt und dann in einer Presse unter Temperatureinwirkung mit der Holzfaserplatte verpresst, wobei die Kunstharzschicht schmilzt. Die obere Pressplatte der Presse ist als Matrize ausgebildet und mit einem Relief versehen, das zu dem Dekor korrespondiert. Beim Verpressen werden dann in der Kunstharzschicht Vertiefungen ausgebildet, die beispielsweise die Oberfläche einer Holzplatte oder die Fugen von verlegten Fliesen nachbilden, um eine möglichst naturgetreue Oberfläche auf der Holzwerkstoffplatte auszubilden.Such a method is known to coat a wood fiber board (MDF, HDF, chipboard or the like) to give it the appearance of a real wood panel. Such panels are then used for furniture construction or to cover walls, ceilings or floors. The desired decor (wood grain, parquet, tile, etc.) is printed on a paper web, which is then coated with synthetic resin and rolled on a roll or stored in bows. The printed paper is later placed on a wood fiber board, possibly covered with a layer of synthetic resin and then in a Press pressed under the influence of temperature with the wood fiber board, wherein the synthetic resin layer melts. The upper press plate The press is designed as a die and provided with a relief that corresponds to the decor. When pressing depressions are then formed in the resin layer, for example, the surface of a wood panel or the joints of laid tiles simulate to form a natural as possible surface on the wood-based panel.

Durch das Aufdrucken des Dekors auf die Papierbahn, das spätere Versiegeln der Papierbahn mit Kunstharz und das anschließende Verbinden der Dekorschicht mit der Holzfaserplatte durch Druck und Temperatur verändert sich die Papierbahn in ihren Abmessungen. Der Fachmann spricht davon, dass das Papier wächst. Das Papier wächst sowohl in der Länge (Längenwachstum) als auch in der Breite (Breitenwachstum). Das Papierwachstum ist nicht vorherstimmbar und beträgt bis zu 1 %. Bei einer üblichen Pressenlänge von 5,6 m wächst das Papier also durchaus um mehr als 5 cm. Die Matrize, die das Relief in die Kunstharzschicht prägt, ist zu der Soll-Struktur des Dekors korrespondierend ausgebildet, und das Papierwachstum kann, da es nicht nachvollziehbar ist, nicht berücksichtigt werden. In der Praxis passt das Relief nicht zu dem Dekor, wodurch es nicht gelingt, eine Echtholz-Oberfläche nachzuahmen. Noch kritischer sind die Abweichungen zwischen Dekorstruktur und Relief beispielsweise bei einem Fliesenmuster, wie es für Bodenpaneele Verwendung findet, zu beurteilen. Wenn das die aufgedruckte Fuge unterstützende Relief nicht auf die Fuge, sondern daneben geprägt wird, dann entsteht ein gravierender Qualitätsmangel.By printing the decoration on the paper web, the subsequent sealing of the paper web with synthetic resin and the subsequent bonding of the decorative layer to the wood fiber board by pressure and temperature, the paper web changes in dimensions. The expert speaks of the paper growing. The paper grows both in length (length growth) and in width (width growth). Paper growth is not predictable and is up to 1%. With a standard press length of 5.6 m, the paper thus grows more than 5 cm. The matrix which impresses the relief in the synthetic resin layer is formed corresponding to the desired structure of the decoration, and the paper growth can not be taken into account because it is incomprehensible. In practice, the relief does not match the decor, which makes it impossible to imitate a real wood surface. Even more critical are the deviations between the decorative structure and relief, for example, in a tile pattern, as it is used for floor panels to assess. If the relief supporting the printed joint is not stamped on the joint, but next to it, then there is a serious lack of quality.

Alle Versuche, das Papierwachstum zu reduzieren, um dadurch die Qualität der beschichteten Holzfaserplatten zu erfüllen, sind bisher wenig erfolgreich gewesen. Man ist deshalb dazu übergegangen, die Pressenlänge zu reduzieren, was zur Folge hat, dass die Herstellkosten natürlich steigen.All attempts to reduce paper growth to thereby meet the quality of the coated fiberboard have hitherto been unsuccessful. It has therefore begun to reduce the press length, which has the consequence that the manufacturing costs of course increase.

Von dieser Problemstellung ausgehend soll das eingangs erläuterte Verfahren so verbessert werden, dass Dekor und Relief auch an der fertigen Platte zueinander korrespondieren.Based on this problem, the method explained in the introduction is intended to be improved so that the decoration and relief also correspond to one another on the finished plate.

Das Problem wird erfindungsgemäß dadurch gelöst, dass das Dekor und das Relief gleichzeitig in die Deckschicht eingebracht werden.The problem is solved according to the invention in that the decoration and the relief are simultaneously introduced into the cover layer.

Dadurch dass das Dekor nicht mehr auf das Papier sondern im Grunde genommen auf die Deckschicht gedruckt wird, was zeitgleich mit dem Prägen des Reliefs erfolgt sind Relief und Struktur des Dekor zueinander vollständig kongruent, so dass eine sehr hochwertige Oberflächenerscheinung erreicht wird. Diese hochwertige Erscheinung ist besonders vorteilhaft wenn die Holzfaserplatte für den Möbelbau, für Zimmertüren oder dergleichen, beispielsweise Fussböden, verwendet werden soll.Due to the fact that the decoration is no longer printed on the paper but basically on the cover layer, which takes place at the same time as the embossing of the relief, the relief and structure of the decor are completely congruent with each other, so that a very high-quality surface appearance is achieved. This high-quality appearance is particularly advantageous when the wood fiber board for furniture construction, for room doors or the like, for example, floors to be used.

Um Dekor und Relief gleichzeitig in die Decksicht einzubringen, wird vorzugsweise die Matrize vor dem Verpressvorgang mit Farbe beschichtet und das Dekor durch Einfärben des Reliefs gebildet.To bring decor and relief at the same time in the deck view, preferably the die is coated with paint before the pressing process and the decor is formed by coloring the relief.

Insbesondere vorteilhaft ist es, wenn sich die Farbe beim Verpressen der Deckschicht mit dem Kunstharz verbindet. Damit wird dann eine wischfeste Oberfläche erreicht.It is particularly advantageous if the paint combines with the synthetic resin during the pressing of the cover layer. This then achieves a smudge-proof surface.

Insbesondere vorteilhaft ist es, wenn auf die Platte eine einfarbige Papierlage aufgelegt wird, auf die dann die Deckschicht aus Kunstharz aufgelegt wird. Die Oberfläche der Oberseite der Platte kann vor dem Auflegen der Deckschicht aber auch eingefärbt (lackiert) oder bedruckt werden.It is particularly advantageous if a monochrome paper layer is placed on the plate, on which then the cover layer made of synthetic resin is placed. The surface of the top of the plate can also be dyed (painted) or printed prior to applying the top layer.

Um eine ausgefallene Optik zu erzielen, kann auf die Oberseite der Platte auch eine mehrfarbige Papierlage aufgelegt werden, auf die dann die Deckschicht aus Kunstharz aufgelegt wird.In order to achieve a fancy appearance, a multi-colored paper layer can be placed on top of the plate on which then the top layer of synthetic resin is placed.

Eine nach dem Verfahren hergestellte Platte aus einem Holzwerkstoff, insbesondere MDF oder HDF, mit einer mit einem Dekor und einem eingeprägten Relief versehenen Oberfläche zeichnet sich dadurch aus, dass das Dekor durch in die Struktur des Reliefs eingebrachte Farbe ausgebildet ist.A plate produced by the method from a wood material, in particular MDF or HDF, with a provided with a decor and an embossed relief surface is characterized in that the decor is formed by introduced into the structure of the relief color.

Vorzugsweise ist das Dekor ein Holzdekor.Preferably, the decor is a wood decor.

Als Holzwerkstoffplatten, die als Trägerplatten für die Veredelung verwendet werden, kommen Spanplatten, mitteldichte Faserplatten (MDF), hochdichte Faserplatten (HDF) oder OSB (Oriented Strand Board) in Betracht. Diese Trägerplatten werden durch Verpressen entsprechender mit Kunstharz gemischten Holzfasern hergestellt. Auf diese Trägerplatte wird dann eine ein- oder mehrfarbige Papierschicht aufgelegt, die mit Melaminharz getränkt ist. Auf die Papierlage kann eine weitere Lage aus einem Kunstharz aufgelegt werden. Die Platte wird dann einer Presse zugeführt, wo unter hohem Druck und Temperatur die Deckschicht mit der Platte verpresst wird, wobei das Harz schmilzt und eine feste Verbindung mit der Oberseite der Trägerplatte eingeht.Chipboard, medium density fibreboard (MDF), high density fibreboard (HDF) or OSB (Oriented Strand Board) may be considered as wood-based panels used as backing plates for finishing. These carrier plates are produced by pressing corresponding wood fibers mixed with synthetic resin. On this carrier plate then a single or multi-colored paper layer is placed, which is impregnated with melamine resin. On the paper layer, another layer of a synthetic resin can be placed. The plate is then fed to a press, where under high pressure and temperature, the cover layer is pressed to the plate, wherein the resin melts and forms a firm connection with the top of the support plate.

Die obere Pressplatte der Presse ist als Matrize ausgebildet. Sie weist das Negativ/Positiv des Reliefs auf, das in die Oberfläche der Platte geprägt werden soll. Dieses Relief kann die Nachbildung einer Holzmaserung oder auch von Fugen eines Fliesenspiegels sein. Dieses über die Oberfläche der Pressplatte hervorstehende Relief wird vor dem Verpressvorgang mit einer Druckfarbe überzogen. Beim Verpressen schmilzt das Kunstharz, die Struktur des Reliefs bildet sich als Vertiefung in der Kunstharzschicht aus und gleichzeitig wird die Farbe in die Vertiefungen des Reliefs übertragen und verbindet sich mit dem flüssigen Kunstharz.The upper press plate of the press is designed as a die. It has the negative / positive of the relief to be embossed into the surface of the plate. This relief can be the reproduction of a wood grain or of joints of a tile mirror. This relief projecting over the surface of the press plate is coated with a printing ink before the pressing process. When pressing the resin melts, the structure of the relief forms as a depression in the resin layer and at the same time the color is transferred to the recesses of the relief and connects to the liquid resin.

Zur Erzielung einer besonderen Optik können auch verschiedene Farben auf das Relief aufgetragen werden. Es können auch nur einzelne Bereiche der Matrize mit Farbe beschichtet werden. Durch die Verbindung der Druckfarbe mit dem Kunstharz wird eine abriebbeständige Oberfläche erzielt.To achieve a special look different colors can be applied to the relief. It is also possible to coat only individual areas of the matrix with paint. By combining the ink with the resin an abrasion resistant surface is achieved.

Claims (15)

  1. Method for producing a decoration and a relief corresponding to the decoration at least on the upper side of a wood-based material board, which is pressed in a press by means of a pressing plate with a cover layer which has been applied beforehand to the upper side of the wood-based material board, the relief being stamped, during the pressing operation, by a female die which cooperates with the pressing plate, characterised in that the decoration and the relief are introduced simultaneously into the cover layer.
  2. Method according to claim 1, characterised in that the cover layer consists of a synthetic resin.
  3. Method according to claim 1, characterised in that the cover layer is a paper layer which is impregnated with melamine resin.
  4. Method according to claim 1, characterised in that the decoration is a wood decoration.
  5. Method according to any one of claims 1 to 3, characterised in that the female die is coated with dye before the pressing operation and the decoration is produced by dyeing the relief.
  6. Method according to claim 5, characterised in that the dye binds with the synthetic resin during the pressing of the cover layer.
  7. Method according to claim 1, characterised in that a single-coloured paper layer, on which a cover layer made of synthetic resin is applied, is applied to the upper side of the wood-based material board.
  8. Method according to any one or more of the preceding claims, characterised in that the upper side of the wood-based material board is dyed before the application of the cover layer.
  9. Method according to claim 8, characterised in that a layer of dye is applied.
  10. Method according to claim 1, characterised in that a multi-coloured paper layer is applied to the upper side of the wood-based material board.
  11. Method according to claim 10, characterised in that a cover layer made of synthetic resin is applied to the paper layer.
  12. Board made of a wood-based material with an upper side which is provided with a decoration and a relief stamped into a layer made of synthetic resin, characterised in that the decoration is formed by dye introduced into the structure of the relief.
  13. Board according to claim 12, characterised in that it consists of MDF.
  14. Board according to claim 12, characterised in that it consists of HDF.
  15. Board according to claim 12, characterised in that the decoration is a wood decoration.
EP03021070A 2002-11-12 2003-09-18 Method for producing a structured decoration in a plate of wooden material Expired - Lifetime EP1419902B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10252865A DE10252865A1 (en) 2002-11-12 2002-11-12 Process for creating a structured decoration in a wood-based panel
DE10252865 2002-11-12

Publications (2)

Publication Number Publication Date
EP1419902A1 EP1419902A1 (en) 2004-05-19
EP1419902B1 true EP1419902B1 (en) 2010-10-20

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EP03021070A Expired - Lifetime EP1419902B1 (en) 2002-11-12 2003-09-18 Method for producing a structured decoration in a plate of wooden material

Country Status (5)

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US (2) US7171998B2 (en)
EP (1) EP1419902B1 (en)
AT (1) ATE485173T1 (en)
DE (2) DE10252865A1 (en)
ES (1) ES2354951T3 (en)

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EP1419902A1 (en) 2004-05-19
US20040250911A1 (en) 2004-12-16
US7171998B2 (en) 2007-02-06
DE50313201D1 (en) 2010-12-02
US20070071949A1 (en) 2007-03-29
DE10252865A1 (en) 2004-05-27
ATE485173T1 (en) 2010-11-15

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