Radiation-curable composite layered sheet or film

A radiation cured composite layered sheet or film, made by a method comprising

• thermoforming a radiation curable composite layered sheet or film comprising
• at least one substrate layer,
• one radiation curable outer layer, and
• a coloring interlayer between the at least one substrate layer and the outer layer, and
• curing the radiation curable outer layer of the thermoformed radiation curable composite layered sheet to form the radiation cured composite layered sheet or film,
• 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 radiation curable outer layer of the radiation curable composite layered sheet or film 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.