Corona phenomenon of polymer protective film

Polymer protective film wholesalers said that with the introduction of new domestic technologies and products, the wholesale service of polymer protective films has become more and more recognized by people. Many sophisticated machinery and electronic equipment are covered with polymer protective films. The commonly used polymer protective film can be corona treated during the manufacturing process to change the surface energy of the protective film and make it easy to adhere to printing inks, coatings and adhesives. When the polymer protective film undergoes a structural state change after manufacture, the polymer changes from amorphous to crystalline within a few days, thereby affecting the effect of corona treatment. After corona treatment, compared with the cross-linked structure of the inner layer, the cross-linked structure of the plastic surface layer is reduced, so the functional groups of the surface layer have a higher mobility. Therefore, during storage, many plastics have a corona treatment effect, and additives move from the inside to the surface, which leads to a decrease in surface energy and factors affecting adhesion, so this negative effect cannot be completely suppressed. There are some requirements for high-quality polymer protective film. After the glass is processed, after the protective film is removed, no glue or traces will remain on the surface of the processed glass product to keep the product soft and beautiful. Second, its toughness allows it to better protect the objects being processed. The protective film also has appropriate viscosity, which can glue and firmly adhere the mask to the protected glass body. After processing, the protective film can be gently removed to avoid cracking due to brittleness and shred to add unnecessary problems . Next post: Understand the laying requirements of polymer adhesive filmsPrevious post: Understand the viscosity requirements and anti-breakage methods of polymer protective films