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OPP protective film is a plastic film made of OPP as the base material, coated with acrylic glue on one side and laminated with a release film (single layer without release film). The surface of the OPP protective film is smooth and has high transparency and temperature resistance. It has good weather resistance and is a very important flexible packaging material. OPP protective film is colorless, odorless, odorless, non-toxic, and has high tensile strength, impact strength, rigidity, toughness and good transparency. The surface energy of OPP protective film is low, and corona treatment is required before gluing or printing. After corona treatment, OPP film has good printing adaptability, can be overprinted to obtain exquisite appearance effect, so it is often used as the surface layer material of composite film. The main use of oPP protective film: 1. Hardware industry: computer case, galvanized sheet stamping, aluminum plate, stainless steel plate, titanium plate, plastic steel plate, glass plate, solar panel and so on. 2. Optoelectronics industry: LCD liquid crystal display, backlight board, cold light film, membrane switch, mobile phone screen and so on. 3. Plastic industry: ABS, oPP injection products, PVC sheets, acrylic panels, instruments, plastic lenses, surface protection of painted parts, etc. 4. Printing industry: PVC, PC board, aluminum board, film and other printing nameplate surface protection, etc. 5. Wire and cable industry: the protection of shaft-mounted copper wires, semi-finished products, finished products, and rolled finished products can effectively prevent dust pollution, and have anti-oxidation and anti-dirt effects.