Thermoplastische coextrudierte Hartstrukturen zur Erlangung von biaxial orientierten Materialien.

摘要

Biaxially oriented rigid thermoplastic structures with multiple coextruded polymeric layers comprising a layer of vinyl chloride polymer and a coating layer of polymethyl methacrylate containing products absorbing ultraviolet radiation. The content of products absorbing ultraviolet radiation is such that the glass transition temperature of the coating layer does not exceed 105 DEG C., thus permitting an orientation in the range 95 DEG -110 DEG C.