Generally speaking, PET high-temperature-resistant film is used to cover the surface of the battery core before the core is dried. The main function is to protect the surface of the battery core from scratches and the liquid in the battery from corrosion. The film is resistant to high temperature bacause the battery core needs to be dried at temperature of 75-85 degrees. Some PET protective film may be out of shape at that temperature. Meanwhile, there is certain requirement for the adhesion of the protective film. It can't be too sticky. Otherwise the packaging film may be torn down when you dismantle the battery. In addition, it must be ensured that the protective film won't fall off during the following processing of producing the battery core.
I suppose you're talking about protective plate. PET film is a kind of film used in packaging. It's used to cover the battery core. The battery is steel shelled when it's produced. The outer layer of PVC needs to be coated. Cover the battery with the film at first. Then heat the film with hair drier to soften it. Otherwise it won't be insulative. And it may cause short circuit. If you have any question, you can directly ask me.
Generally speaking, PET high-temperature-resistant film is used to cover the surface of the battery core before the core is dried. The main function is to protect the surface of the battery core from scratches and the liquid in the battery from corrosion. The film is resistant to high temperature bacause the battery core needs to be dried at temperature of 75-85 degrees. Some PET protective film may be out of shape at that temperature. Meanwhile, there is certain requirement for the adhesion of the protective film. It can't be too sticky. Otherwise the packaging film may be torn down when you dismantle the battery. In addition, it must be ensured that the protective film won't fall off during the following processing of producing the battery core.
