The main reason for the poor quality of precision PP plastic pepper balls is that they are easily deformed. There are several original drawings for the deformation of plastic pepper balls. The main reason is that the parameters of the ball grinder are not set properly during the grinding process of PP plastic pepper balls, and the workers who process plastic pepper balls are not skilled enough to send them out in time during the grinding process of plastic pepper balls.

The hardness of PP plastic pepper ball is not high, only about 45 degrees, which is relatively good among all engineering plastics. Because the hardness of PP material is not high, it is impossible to apply pressure to the machine in the grinding process of the ball mill like grinding POM balls. Because the ball mill pressurization system adopts hydraulic pressurization, it is easy to adjust the pressure too much during the pressurization process. If the pressure is too high, the plastic ball will be deformed between the grinding wheel and the grinding wheel. Grinding in a deformed state will only grind the PP plastic pepper ball into an oval shape, so the main reason for the deformation of the PP plastic pepper ball is the excessive pressure adjustment in the process of grinding the ball by the ball grinder.