Coated plastic profiles prodn - eg window frames, by simultaneous extrusion of thermoplastic profile and coating, using different polymeric materials

摘要

Extrusion of profiles, coated with =1 other materials, at least on part of the periphery and pref. composed of synthetic thermoplastic materials, is by continuously extruding the coating matl. onto the profile while this is still at a temp. at which it is deformable, at the same time as this being extruded.