PVC film popular science pet film.

The PET film of PVC film is a kind of packaging film with more comprehensive performance. It has good transparency and luster; it has good air tightness and fragrance retention; it has medium moisture resistance, and its moisture permeability decreases at low temperatures. PET film has excellent mechanical properties, and its strength and toughness are the best among all thermoplastics. Its tensile strength and impact strength are much higher than those of ordinary films; it has good stiffness and stable dimensions, and is suitable for secondary processing such as printing and paper bags. . PET film also has excellent heat resistance, cold resistance, good chemical resistance and oil resistance. But it is not resistant to strong alkalis; it is easy to be charged with static electricity, and there is no proper anti-static method, so attention should be paid when packing powdery articles. In addition to the excellent physical and mechanical properties of ordinary polyester film, the film also has excellent optical properties, such as good transparency, low haze, and high gloss. It is mainly used for high-end vacuum aluminized products. The film is mirror-finished after aluminizing, which has a good packaging decoration effect; it can also be used for laser anti-counterfeiting base film.

The characteristics of heat shrinkable polyester film: it is stable at room temperature, shrinks when heated (above the glass transition temperature), and heat shrinks more than 70% in one direction. The advantages of heat-shrinkable polyester film packaging are: 1: tightly packed, good anti-scattering, 2: no recovery, with a certain anti-counterfeiting function, 3: skin-tight and transparent, reflecting the product image, 4: rainproof, Moisture and mildew proof. Have a certain anti-counterfeiting function. Heat-shrinkable polyester film is often used in the convenience food, beverage market, electronic appliances, and metal products. In particular, shrink labels are the main application areas. Because with the rapid development of PET beverage bottles, beverage bottles such as cola, sprite, and various juices require PET heat shrinkable film to be matched with heat seal labels. They belong to the polyester category and are environmentally friendly materials that are easy to recycle and recycle. use.

This is the introduction of PET film of PVC film.