PVC protective film reacted with the plastic on which it's coated. Why did that happen?

nan

The quality of your PVC film is not good, I suppose. I had the same problem before. The PVC film I bought was cheap but the glue was not good. I think high-quality film won't have such problem.

Few people know that PSA is used on the film. If people tear the film too fast, residual glue may remain. And when the film is coated for too long or the temperature is too high, the residual things will increase.

It's about the glue.

There's probably something to do with the plastic. After all, they are all chemicals.It's possible that reactions happen.