The manufacturing process of PP plastic pepper ball is the process of mold injection, grinding and polishing by a special plastic pepper ball mill, while the resin plastic pepper ball is manufactured by mold casting. Because of the casting process, the specifications and sizes of the resin plastic pepper ball are not limited, but the injection diameter of PP plastic pepper ball is more than 30mm, so it is difficult to process and manufacture.

The number of molds for PP plastic pepper balls can be many, ranging from tens to hundreds according to the diameter of plastic pepper balls, while the molds for resin plastic pepper balls can only cast one plastic ball at a time, so the resin plastic pepper balls are more suitable for processing plastic balls with large diameters. The glue inlet of the mold for PP plastic pepper balls is smaller, in order to easily remove the nozzle, and the casting production of resin plastic pepper balls requires larger molds. The purpose is to easily pour the resin solution into the resin plastic pepper ball mold. The resin plastic pepper ball is mainly made of toys and decorations, so it does not need high precision and grinding by a ball grinder.