The main reason for the occurrence of crystal points of the protective film

- Sep 25, 2020-

1. The cleanliness of the raw materials is not up to standard, including the cleanliness of the raw materials themselves and the dust pollution of the environment; therefore, pay attention to the production process of the protective film.

2. In terms of raw material selection, when there is no suitable choice or there is a big difference in the integration of several raw materials, and the compatibility of the raw materials is not good, crystal points are easy to appear; therefore, the selection of raw materials is very important.

3. Regarding the processing conditions of the protective film, improper processing temperature will result in poor plasticization or over-plasticization of the raw materials, which will cause crystal spots.

4. There is a problem with the processing capacity of the equipment, and the barrel screw and filter of the equipment also have a very important influence on the generation of crystal points.