The reinforcement and modification technology of POM plastic pepper ball is to improve the hardness and toughness of the plastic pepper ball. The most common method is to modify the POM plastic pepper ball by adding glass fiber. In principle, the addition ratio of glass fiber should not exceed 30%, and the strength and impact resistance of the modified POM plastic pepper ball can be improved by more than 1-3 times. However, the post-processing difficulty of POM plastic pepper ball with glass fiber increases, which has an impact on the accuracy and surface smoothness of the plastic pepper ball.

The most significant effect of POM plastic pepper balls modified by glass fiber is that the plastic pepper balls produced by pure raw materials are not beautiful in appearance. Because of the increased hardness, the shrinkage rate of POM plastic pepper balls in the process of injection molding into blanks is much smaller than that of POM plastic pepper balls produced by pure raw materials, so the size of the produced plastic blank balls will be much larger under the condition of unchanged molds, which will increase the subsequent grinding time. Accordingly, the cost of POM plastic pepper ball is increased. It is difficult to polish the surface of POM plastic pepper ball with glass fiber. It is necessary to use high-hardness polishing materials to polish POM plastic pepper ball, and the polishing solution is also specially made. Only by doing the above can we produce POM plastic pepper ball with high precision and high gloss.