Polyester (PET) film characteristics
It is a colorless, transparent, glossy film with excellent performance, rigidity, high hardness and toughness, puncture resistance, friction resistance, high temperature and low temperature resistance, chemical resistance, oil resistance, air tightness and good freshness. It is one of the commonly used barrier composite film substrates. The price is relatively high, and the thickness is generally 12μm. It is commonly used as the outer layer material for retort packaging and has good printability.