PVC plastic pepper ball adopts the process that raw materials are PVC powder and plasticizer, which are mixed into paste, filled into plastic pepper ball mold, and heated and molded in a glue pond furnace, while blow-molded hollow pepper ball adopts granular plastic material, which is melted, then a certain amount of melted plastic material is squeezed into the hollow pepper ball mold, and then the melted plastic is filled with high-pressure gas for expansion molding.The hollow ball formed by heating and curing the paste liquid used in PVC plastic pepper balls is suitable for the production and processing of plastic pepper balls with large size specifications, and the material has limitations, so only PVC powder material can be used, while the plastic hollow ball produced by blow molding process is thermoplastic plastic with good fluidity, but the material also has limitations. At present, PP material and PE material are most used, and these two materials have good fluidity. The produced PP pepper balls and PE pepper balls are relatively stable in size, uniform in wall thickness and small in batch air, so the most common production process of plastic pepper balls is blow molding, and the size of plastic hollow balls is not too limited, and they are suitable for production from 10mm to 150 mm.