Polyethylene is the simplest polymer organic compound and the most widely used polymer material in the world today.
PE protective film uses special polyethylene (PE) plastic film as the base material. According to the density, it is divided into high-density polyethylene protective film, medium-density polyethylene and low-density polyethylene. The biggest advantage of PE protective film is that the protected product is not polluted, corroded, scratched during production, transportation, storage and use, and protects the original smooth and shiny surface, thereby improving the quality and market competitiveness of the product. .
PET film is also known as high temperature resistant polyester film. It has excellent physical properties, chemical properties, dimensional stability, transparency, and recyclability, and can be widely used in magnetic recording, photosensitive materials, electronics, electrical insulation, industrial films, packaging decoration and other fields.
PET film is a more comprehensive packaging film. 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 general 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 and good chemical resistance and oil resistance. But it is not resistant to strong alkali; 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.