POLYESTER LAMINATE CONTAINING BIAXIALLY ORIENTED POLYPROPYLENE FILM AND METHOD OF MAKING THE SAME

摘要

Polyester-containing multilayer biaxially-oriented polypropylene films are provided. According to the invention, a two- or three-layer polyestercontaining cap layer is bonded to a monoaxially oriented polypropylene core, followed by orientation of the resulting composite in a direction transverse to the direction of orientation of the core layer. At least one tie layer is interposed between the core and the polyester. Advantageously, the polyester contains silicone fluid as a processing aid.