Multilayer plate based on polycarbonate protected against UV radiations.

摘要

A plastic sheet protected against ultraviolet radiation and composed of a core layer (1) of polycarbonate carrying, on at least one of its faces, a reservoir layer (2) based on polycarbonate and containing between 5 and 15% by weight of an agent which absorbs ultraviolet radiation, this layer in turn being covered by an outer layer (3) of a synthetic resin, containing an agent which absorbs ultraviolet radiation, characterised in that the said ultraviolet radiation absorption agent of the said outer layer (3) is of low volatility and is present in the outer layer at a content greater than 2% by weight. ……