Since the pepper ball is a mass-produced product, the life of the mold must be considered when designing the mold. Therefore, the  pepper ball shell mold must be made of high hardness and corrosion-resistant mold steel when selecting materials.

pepper ball shell will produce corrosive gas during injection molding. The PH value is acidic and corrosive to the mold steel. Therefore, the use of ordinary mold steel to make the  pepper ball shell mold will have a short service life, and the surface of the injection molded  pepper ball shell It is not smooth, and the  pepper ball shellmold should be made of special mold steel. Generally, S136 mold steel is used to manufacture the  pepper ball shell mold.