Radiation-curable composite layered sheet or film

A radiation-curable, composite layered sheet or film comprising

• at least one substrate layer,
• one outer layer, and
• a coloring interlayer between the at least one substrate layer and the outer layer, wherein
• the at least one substrate layer comprises a thermoplastic polymer selected from the group consisting of polymethyl methacrylates, polybutyl methacrylates, polyethylene terephthalates, polybutylene terephthalates, polyvinylidene fluorides, polyvinyl chlorides, polyolefins, polyamides, polycarbonates, acrylonitrile-butadiene-styrene (ABS) polymers, acrylic-styrene-acrylonitrile (ASA) copolymers, acrylonitrile-ethylene-propylene-diene-styrene copolymers (A-EPDM), polyether imides, polyether ketones, polyphenylene sulfides, polyphenylene ethers and mixtures thereof,
• wherein the outer layer comprises a radiation-curable composition comprising a binder having a glass transition temperature of more than 40° C., and
• wherein the binder is a polyurethane obtained by a reaction comprising reacting hydroxylalkyl (meth)acrylic groups with isocyanate groups.

A method of making a radiation-curable composite layered sheet or film, the method comprising

• applying one outer layer on at least one substrate layer and a coloring interlayer, to make the sheet or film,
• wherein the coloring interlayer is between the at least one substrate layer and the one outer layer,
• wherein the outer layer during the applying comprises a water-free and solvent-free radiation-curable composition comprising a binder having a glass transition temperature of more the 40° C., and
• wherein the binder is obtained by a reaction comprising reacting hydroxylalkyl (meth)acrylic groups with isocyanate groups.