| abstract |
@ According to the method of the invention, a multi-layer plastic hollow profile sheet is produced by coextrusion of several adhesively bonded layers of thermoplastic extrudable plastics using a multi-material extrusion tool. The panel contains a load-bearing core layer made of polycarbonate plastic with a multiplicity of continuous hollow chambers which are connected on at least one, preferably on both sides, to a UV absorption layer made of plastic, which contains at least 2% by weight of a UV absorber which is volatile at high temperatures is. On the side of the UV absorption layer facing away from the core layer, a cover layer made of a plastic, which contains less than 2% by weight and preferably no volatile UV absorber at all, is produced by coextrusion simultaneously with the other layers, as a result of which the volatile is evaporated UV absorber is avoided during the manufacturing process. |