Method for printing directly onto boards of wood-based material

Abstract

The present invention relates to a method for coating a board of wood-based material, in particular a board of real wood, a plywood board or a board for parquet flooring, with a flowable plastics material. The method comprises applying the plastics material as a single, thick layer to the board of wood-based material ( 6 ) and creating an impressed structure by means of a material web ( 3 ) or a structure roller. After creating the impressed structure, the plastics material is cured to produce a wear-resistant surface.

1 . Method for coating a board of wooden material, in particular a real wood board, a veneer board or a parquet board, with a flowable plastic material, characterized in that the method comprises the following steps:
 applying the plastic material as a single thick layer onto the board of wooden material;   arranging a web with a structured surface without application of pressure onto the plastic material, to provide the layer of plastic material with a structure;   drying and/or curing the layer of plastic material, whereby the structure introduced into the layer of plastic material is fixed, and   removing the web with the structured surface.   
     
     
         2 . Method for coating a board of wooden material, in particular a real wood board, a veneer board or a parquet board, with a flowable plastic material, characterized in that the method comprises the following steps:
 applying the plastic material as a single thick layer onto the board of wooden material;   embossing a structure into the layer of plastic material by means of a structured roller, before the layer of plastic material is cured, to provide the layer of plastic material with a structure; and   drying and/or curing the layer of plastic material, whereby the structure introduced into the layer of plastic material is fixed.   
     
     
         3 . Method according to any of  claims 1  or  2 , characterized in that the plastic material increases the abrasion resistance of the board of wooden material. 
     
     
         4 . Method according to any of the preceding  claims 1  to  3 , characterized in that the structure has a depth of up to 80 μm and preferably of up to approx. 35 μm. 
     
     
         5 . Method according to  claim 1 , characterized in that the web is transparent for UV light. 
     
     
         6 . Method according to any of  claims 1  to  5 , characterized in that the plastic material is a plastic, which is curable by means of UV radiation. 
     
     
         7 . Method according to any of  claims 1  to  6 , characterized in that the layer is applied in a single process step in a thickness of 30-150 μm and preferably of 80-110 μm and particularly preferred in a thickness of approx. 35 μm. 
     
     
         8 . Method according to any of  claims 1  to  7 , characterized in that, after application of the layer of plastic material and prior to the provision of the structure, abrasion-resistant particles, in particular corundum particles, with a grain size D50 of 36.5-63 μm and preferably D50 of 36.4-44.5 μm are embedded into the layer of plastic material, to increase the abrasion resistance of the layer. 
     
     
         9 . Method according to any of  claims 1  to  8 , characterized in that prior to the application of the layer of plastic material, abrasion resistant particles, in particular corundum particles, with a grain size D50 of 36.5-63 μm and preferably D50 of 36.4-44.5 μm are embedded into the layer of plastic material to increase the abrasion resistance of the layer. 
     
     
         10 . Method according to any of  claims 1  to  9 , characterized in that the plastic material is a polymerizable acrylate system. 
     
     
         11 . Method according to any of  claims 1  to  10 , characterized in that the curing of the plastic material is effected by means of a polymerization of the plastic material. 
     
     
         12 . Method according to any one of  claims 1  to  11 , characterized in that after the application of the layer of plastic material, other materials as e.g. straw, tree needles, metal cuttings and similar are introduced into the layer, to provide an esthetical effect.