Method for applying one or more layers to a paper substrate

A method for applying two or more layers to a substrate by means of a multilayer curtain coating process comprising the steps of:

• applying a curtain comprising at least two layers of coating liquids to a substrate, wherein the at least two layers of coating liquids comprise a base layer and a top layer, and which base layer is in direct contact with the substrate, which substrate is moved in a direction perpendicular to the curtain, wherein each of the coating liquids independently comprises a radiation-curable resin, each of the coating liquids has a viscosity of from 200-3000 mPas measured at a shearing rate of 1000 sec−1, each of the coating liquids is free from solvent and from water, and wherein the applying of the at least two layers of coating liquids takes place simultaneously without an intermediate drying step, after which the substrate thus provided with at least two liquid coatings is subjected to a curing step for curing the liquid coatings, which curing step includes subjecting the substrate thus provided with the at least two liquid coatings to radiation so as to effect curing of the radiation-curable resin in each of the coating liquids, and
• wherein the substrate is selected from the group consisting of impregnated paper, pre-impregnated paper, overlay paper, core paper, impregnable paper and liquid-absorbent paper.