Introduction of polyester film

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Polyester film is a kind of polymer plastic film, which is more and more favored by consumers because of its excellent comprehensive performance. Since my country's production volume and technical level still cannot meet the market demand, some of it still needs to rely on imports.
Polyester fiber film is a film material made of polyethylene terephthalate as a raw material, which is made into a thick sheet by an extrusion method, and then biaxially stretched.
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.
Polyester film is often used on the outer layer of flexible packaging to make various foods, beverages, medicines and daily chemical products common in daily life.