BIAXIAL STRETCHED POLYESTER FILM CONTAINING A CHAIN EXTENDER CAPABLE OF REDUCING THE DAMAGE OF OTHER FILM PROPERTIES BY THE CHAIN EXTENDER, A MANUFACTURING METHOD THEREOF, AND A USE THEREOF

摘要

PURPOSE: A biaxial stretched polyester film, a manufacturing method thereof, and a use thereof are provided to produce the film with a stable and economical method without causing gelation.;CONSTITUTION: A biaxial stretched polyester film contains polyester and a chain extender. A manufacturing method of the polyester film comprises the following steps: extruding a melted material corresponding the composition of the film using a flat die; forming an amorphous preliminary film by drawing off, and solidifying the film obtained from the previous steps using more than one roll; re-heating and biaxial arranging the film; and heat setting and rolling the biaxially extruded film.;COPYRIGHT KIPO 2010