| 摘要 |
Composite body comprises (a) a ultraviolet-cured covering layer (1) forming a surface, (b) optionally an upper intermediate layer (2), (c) a lower intermediate layer (3-1) comprising coloring agents and optionally additives for improving the ultraviolet resistance, (d) a substrate layer (3) comprising a thermoplastic polymer or a blend of thermoplastic polymers, colorant and optionally ground material, recyclate or regenerate, (e) optionally an back covering comprising a thermoplastic polymer or a blend of thermoplastic polymers, and (f) optionally an adhesive layer (4). Composite body comprises (a) a ultraviolet-cured covering layer (1) forming a surface, which has a layer thickness of 1-20 mm, (b) optionally an upper intermediate layer (2) arranged below the covering layer, (c) a lower intermediate layer (3-1) comprising coloring agents and optionally additives for improving the ultraviolet resistance, (d) a substrate layer (3) comprising a thermoplastic polymer or a blend of thermoplastic polymers, colorant and optionally ground material, recyclate or regenerate, (e) optionally an back covering comprising a thermoplastic polymer or a blend of thermoplastic polymers, and (f) optionally an adhesive layer (4), where the surface exhibits (i) a loss of gloss of maximum 30%, preferably maximum 20% according to a micro-scratch resistance test measured according to prEN 16094, (ii) a numerical evaluation of >= 3, with a chemical resistance test measured according to DIN EN 12720, when using acetone as the test liquid at a exposure time of 1 hour, (iii) a gloss of at least 80 GLE, preferably at least 85 GLE measured according to ISO 2813at an observation angle of 20[deg] , and (iv) a haze of maximum 20, preferably maximum 15, measured according to ISO 13803. An independent claim is also included for producing the composite body, comprising applying an ultraviolet curable solvent-free coating forming the covering layer on a ultraviolet transparent transmission medium, where ultraviolet curable coating with transmission medium is pressed on the upper- or lower intermediate layer, curing and irradiating the coating with ultraviolet radiation, where ultraviolet radiation passes through the ultraviolet transparent transmission medium. |
