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Abstract

The invention relates to a multi-layered composite body, comprising

(i) a cover layer (1) having a layer thickness of 5-50 μm, comprising an acrylic polymer,(ii) an intermediate layer (2) that is arranged underneath the cover layer (1), comprising a thermoplastic material, which at a layer thickness of 3 mm shows in the entire wave length range of 380 nm to 780 nm a spectral transmission of at least 80%, measured by way of uncoloured test bodies according to ISO 13468-2 (edition 1999) and which has in regard to the acrylic polymer of the cover layer (1) a glass transition temperature that is at least 30° C. higher, defined by the respective “midpoint temperature”, measured by way of DSC method according to ISO 11357-2 (edition 1999-3)(iii) a substrate layer, comprising a thermoplastic material, which has in regard to the acrylic polymer of the cover layer (1) a glass transition temperature that is at least 30° C. higher, defined by the respective “midpoint temperature”, measured by way of DSC method according to ISO 11357-2 (edition 1999-3), containing pigments, dyes and optionally effect pigments,(iv) optionally a fourth layer (4), comprising a thermoplastic material, as described in the intermediate layer (2) or in the substrate layer (3), or a blend of acrylonitrile-butadiene-styrene co-polymer (ABS) with a thermoplastic material, as described in the intermediate layer (2) or in the substrate layer (3),providing that the overall thickness of the composite body is more than 1.00 mm.

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