Extruded film with release properties, e.g. for anti-blocking or surface-protection applications, comprises olefin polymer containing a carbamate-functional polymeric release agent with attached polysiloxane fragments

摘要

Single- or multi-layer extruded film (1) with release properties made from a mixture showing a release action towards contact adhesives and comprising (a) a polyolefin-based or olefin copolymer-based carrier and (b) a polymeric release agent with carbamate functions, in which siloxane polymer fragments are attached to the carbamate functions in (b). An independent claim is included for multilayer extruded film (1A) with a release layer (1) as above and at least one other co-extruded layer (4 to 7) of thermoplastic polymer or thermoplastic elastomer.