Due to the impact of the wave of environmental silicone PET protective film, consumers have put forward higher and higher requirements for the quality of silicone PET protective film. In fact, the protective film also gives consumers a lot of help, we all know that the protective film is a kind of membrane material with protective function, the main role of the protective film is to protect the material in the process of transportation, storage and processing, from harmful gas, microbial corrosion; Prevent dust beam, mechanical scratch; In addition, in the process of bending and pressing and stretching, improve the lubricity of materials and molds and improve the processing operability; In order to ensure or improve the grade of products, reduce the consumption of raw materials, increase benefits for enterprises.

The application of silicone PET protective film material in the industrial field is developing rapidly, which also puts forward higher requirements for the quality and characteristics of the protective film. The development and application of the protective film mainly arose in the early 1970s in Japan, the United States and some European countries. After decades of development, It has been widely used in machinery, instrument, electronics, shipbuilding, building materials and automobile manufacturing industries. Our country started in the early 80 s and grew up in the early 90 s. Therefore, there are certain gaps between the basic research, production technology and application of protective film and the developed countries. For example, in developed countries, silicone PET protective film is divided into dozens of kinds only by the substrate, and there are simple protection, light processing, middle processing and heavy processing protective film from the processing purpose.

The PVC plastic mask of silicone PET protective film and the silicone coated with plastic release test peel, knead the glue-coated side of the mask back, make the glue and glue closely together, and then pull away, pay attention to the length of the glue stretched between the glue and the glue can not exceed 0.2 mm, so that the protective film in use when the possibility of degumming is very small. It is also important to check the thickness of the PVC mask, because it is related to the impact of the protective film. The thickness of the general mask is about 9 silk. If deep carving is needed, the thickness of the mask should be increased accordingly, otherwise it will be broken down and damaged the processed object. Test the thickness of the mask can be micrometer. It is not easy to grasp accurately by visual inspection and hand touch alone, because the diameter of a hair is about 7 silk, imagine that the sensitivity of the hand is difficult to achieve. Users buy frequently and use in time, do not store too much, because the change of seasons, temperature and humidity can affect the quality of silicone PET protective film. The protective film should not be exposed to the sun, nor should it be damp. It is appropriate to place it in a ventilated place.