Causes of white spots on polymer protective film

There are many industries in the wholesale market of polymer protective film, and some white spots are found in the process of use. There are many reasons for this. We need to use some methods to solve it? 　　 Special bonding for polymer protective film composite The surface tension of the agent is low, and the spreading effect on the surface of the glue layer is obviously better than that of the general-purpose adhesive. Adopting glue glue will be very easy to control the leveling of the glue liquid and have an ideal coating state. In terms of the adhesive coating state alone, the use of electronic glue can eliminate the possibility of white spots. The manufacturer must adhere to the regular cleaning system of the coating roller and master the correct method of cleaning the coating roller. When producing full white or light background printing films, two points should be paid attention to. First, the doctor blade, coating roller, and flattening roller should be thoroughly cleaned before production.　　The viscosity of the glue liquid has a certain matching relationship with the number of lines of the screen roll. If the matching interval is too large, the coating state of the glue will be damaged, and the white spots will be more concerned. Next: How to play the effect of PE shrink filmPrev: How to use PE shrink film