What is Mylar made of?

Polyester film is made of polyethylene terephthalate as raw material, by extrusion process, and then by stretching film material.

Polyester film is a kind of polymer plastic film, usually colorless transparent, glossy film (additive particles can now be added to make it have color), excellent mechanical properties, high rigidity, hardness and toughness, puncture resistance, friction resistance, high temperature and low temperature resistance, chemical resistance, oil resistance, air tightness and fragrance protection, is one of the commonly used anti-permeability composite film substrate. Because of its excellent comprehensive performance and more and more favored by the majority of consumers.