Abstract: The invention relates to a process for the preparation of a modified amino-formaldehyde resin, comprising: a) a mixing step, in which a liquid phase, an amino-formaldehyde resin and free formaldehyde are brought together to form a mixture, whereby the amino-formaldehyde resin has a molar formaldehyde to (NH2)2 ratio (F/(NH2)2 ratio) lying between 0.

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.