Heat-sealable laminated polyester film.

摘要

A heat-sealable laminated film is disclosed which comprises a heat-sealing layer formed of a copolyester and having a thickness of not less than 5 mu m and a base layer formed of a copolyester containing the copolymerized unit common to the copolyester of the heat-sealing layer. The film of this invention excels in heat-sealing strength, is extensively usable in applications for packaging, electric insulation, and industry in general, and has high industrial value.