There are many kinds of main raw materials for the plastic shell of pepper balls, but hard rubber is the main material. Most soft rubber pepper balls are used as toy balls, such as high-elastic pepper balls and hollow elastic balls filled with water. The general process is to open the mold, and the number of products in the mold is determined according to the needs of pepper ball customers. Generally, more than 500 pieces can be taken from one mold.How few are there, mainly depends on the diameter of pepper balls. The number of large-diameter balls is small, and the number of small-diameter balls is large. After injection molding, the plastic balls should be separated from the nozzle, and then finely polished, and finally they will be high-precision plastic pepper balls.