Coated Substrate

Abstract

The invention relates to a method for coating a substrate, comprising the steps of: a) Applying a layer comprising a melamine-formaldehyde resin A to a substrate, whereby a coated substrate is formed; b) Optionally treating the coated substrate with IR- or NIR-radiation; c) Optionally applying an ink, dye solution or pigment dispersion to the coated substrate; d) Optionally applying a layer comprising a melamine-formaldehyde resin B to the coated substrate from step b) or c); e) Placing the coated substrate in a press; f) Optionally heating the coated substrate in the press for a certain amount of time; g) Increasing the pressure in the press and keeping the coated substrate under pressure for a certain amount of time. The invention further relates to a coated substrate as obtainable by the said method, and its use in a post-forming process.

1 . Method for coating a substrate, comprising the steps of: 
 a) Applying a layer comprising a melamine-formaldehyde resin A to a substrate, whereby a coated substrate is formed;    b) Optionally treating the coated substrate with IR- or NIR-radiation;    c) Optionally applying an ink, dye solution or pigment dispersion to the coated substrate;    d) Optionally applying a layer comprising a melamine-formaldehycJe resin B to the coated substrate from step b) or c);    e) Placing the coated substrate in a press;    f) Optionally heating the coated substrate in the press for a certain amount of time;    g) Increasing the pressure in the press and keeping the coated substrate under pressure for a certain amount of time.    
     
     
         2 . Method according to  claim 1  wherein the layer comprising melamine-formaldehyde resin A and the optional layer comprising melamine-formaldehyde resin B do not comprise a carrier.  
     
     
         3 . Method according to  claim 1 , wherein melamine-formaldehyde resin A comprises a powderous melamine-formaldehyde resin C and/or a melamine-formaldehyde resin dispersion D.  
     
     
         4 . Method according to  claim 1 , wherein melamine-formaldehyde resin A comprises a melamine-formaldehyde resin dispersion D, whereby said melamine-formaldehyde resin dispersion D comprises a dispersant, said dispersant comprising a styrene-maleic anhydride copolymer.  
     
     
         5 . Coated substrate obtainable by the method according to  claim 1 .  
     
     
         6 . Use of the coated substrate according to  claim 5  in a post-forming process.  
     
     
         7 . Dispersion of liquid or solid melamine-formaldehyde resin particles in a liquid, whereby the dispersion contains a dispersant, characterised in that the said dispersant comprises a styrene maleic anhydride copolymer.