Plastic films for ID documents having improved properties for laser engraving and improved chemical resistance
申请人:Covestro Deutschland AG
公开号:US11198769B2
公开(公告)日:2021-12-14
The present invention relates to plastic films with improved laser engraving capability, chemical resistance and mechanical stress, special embodiments of such films in the form of co-extrusion films, layer structures comprising such films, use of such films, as well as security documents, preferably identification documents, containing such films.
本发明涉及具有更好的激光雕刻能力、耐化学性和机械应力的塑料薄膜、共挤薄膜形式的此类薄膜的特殊实施例、包含此类薄膜的层结构、此类薄膜的用途以及包含此类薄膜的安全证件(最好是身份证件)。