METHOD FOR MANUFACTURING POLYESTER FILM

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a polyester film for forming all manufactured films with characteristics durable against its use by simultaneously forming two or more films. SOLUTION: The method for manufacturing the polyester film comprises the steps of melting a polymer (A) containing a polyhydroxycarboxylic acid as a main body and an aromatic polyester (B), then co-extruding the polymer (A) and the polyester (B) to a laminated film, and thereafter releasing the respective layers to two or more films.