What's the matter with high-density PP material and carbon powder, and the printed products have black spots?

1, the problem of toner is that the temperature resistance of toner master batch is low, or some materials with low carbonization point are doped in it.

2. Process problems: reduce the screw temperature, back pressure and screw speed, and clean the screw nozzle.

Guangdong Linwei Engineering Plastics Division I has modified PP, special color masterbatch and so on.