Paper for producing panels and paper-making method

Abstract

The invention relates to a method for making paper, which is characterized in that the paper is impregnated with an acrylate-containing dispersion or mixture and the acrylate-containing dispersion or mixture is forced into the paper. The paper so produced can be used to produce boards, especially floor panels even if said panels have only a mass per unit area of 15 to 35 g/m 2 , thereby reducing the costs of production of such panels.

1 . Method of manufacturing a paper, characterised in that the paper is impregnated with an acrylate-containing dispersion or mixture.  
     
     
         2 . Method according to  claim 1 , characterised in that the acrylate-containing dispersion or mixture is pressed into the paper.  
     
     
         3 . Method according to one of the foregoing claims, characterised in that the acrylate-containing dispersion or mixture contains water, in which acrylate particles are dispersed, and preferably resin, in particular an amino resin.  
     
     
         4 . Method according to one of the foregoing claims, characterised in that colour pigments such as aluminium silicate, calcium carbonate, TiO 2 , Al 2 O 3  or magnesium silicate are added to the acrylate-containing mixture or dispersion.  
     
     
         5 . Method according to one of the foregoing claims, characterised in that the paper is conducted through rollers which are pressed together, the acrylate-containing dispersion or mixture being continuously applied to at least one roller and preferably distributed on the roller with a doctor blade.  
     
     
         6 . Method according to one of the foregoing claims, characterised in that the paper is de-aerated before the acrylate-containing dispersion or mixture is pressed into it and for this purpose in particular is steeped on one side in the acrylate-containing dispersion or mixture.  
     
     
         7 . Method according to one of the foregoing claims, characterised in that the paper weight amounts to at least 15 grams per square metre and/or does not exceed an upper limit of 60 g/m 2 , preferably of 40 g/m 2 .  
     
     
         8 . Method of manufacturing a tile, in which paper is impregnated in accordance with one of the foregoing claims and a laminate system which comprises the paper and a carrier plate is pressed with the application of heat.  
     
     
         9 . Method of manufacturing a tile according to the preceding claim, in which the laminate system includes a decorated or patterned paper onto which a mixture of amino resin and abrasion-resistant particles is applied, preferably by spraying, before the pressing step.  
     
     
         10 . Method of manufacturing a tile according to the preceding claim, in which fibres and/or spheres made of polyester, polyamide or glass are applied to the abrasion-resistant particles before the pressing step.  
     
     
         11 . Paper characterised by acrylate which is present at least predominantly in the interior of the paper.  
     
     
         12 . Paper according to the preceding article claim, produced in accordance with one of the foregoing method claims.  
     
     
         13 . Paper according to one of the preceding article claims, characterised by a paper weight of 15 to 60 g/m 2 , preferably up to 40 g/m 2 .  
     
     
         14 . Paper according to one of the preceding article claims, characterised by colour pigments which are present in the interior of the paper.  
     
     
         15 . Paper according to one of the preceding article claims, characterised in that it displays no delamination on the conclusion of the performance of a standardised steam test, in which the paper is exposed to steam for two hours.  
     
     
         16 . Tile, in which the paper according to one of the preceding article claims is used.  
     
     
         17 . Tile according to the preceding claim, in which a surface of the tile is provided with abrasion-resistant particles such as corundum or silicon carbide particles and preferably with fibres and/or spheres made of polyester, polyamide or glass.  
     
     
         18 . Tile according to one of the two preceding claims, characterised in that the tile is a flooring panel.