The difference between PET film and PVC film

PET polyterephthalate plastics mainly include polyethylene terephthalate (PET) and polybutylene terephthalate (PBT). PET has a highly symmetrical molecular structure and a certain crystal orientation ability, so it has high film-forming properties and properties. PET has good optical properties and weather resistance, and amorphous PET has good optical transparency. In addition, PET has excellent wear resistance, friction, dimensional stability and electrical insulation. Bottles made of PET have high strength, good transparency, non-toxic, anti-permeation, light weight, high production efficiency, etc., so they are widely used. The molecular chain structure of PBT and PET is similar, and most of the properties are the same, except that the main molecular chain has changed from two methylene groups to four, so the molecules are more flexible and the processing performance is better.

The main uses of polyterephthalic acid plastics are:

Film and sheet materials: all kinds of food, medicine, non-toxic and sterile packaging materials; high-end packaging materials for textiles, precision instruments, electrical components; audio tapes, video tapes, movie films, computer floppy disks, metal coatings and photosensitive films, etc. Substrate; electrical insulation materials, capacitor films, flexible printed circuit boards and membrane switches and other electronic and mechanical fields.

PVC, its full name is Polyvinyl Chloride (polyvinyl chloride), is a synthetic material, the main component is polyvinyl chloride, and other components (anti-aging agents, modifiers, etc.) are added to enhance its heat resistance, toughness, and ductility Sex etc. Its essence is a vacuum blister film. The top layer of this surface film is lacquer, the main component in the middle is polyvinyl chloride, and the bottom layer is back-coated adhesive. It is often used for the surface packaging of various panels.