According to the different materials formed by the mold can be divided into metal molds and non-metallic mold. Metal mold is divided into: casting mold (non-ferrous metal die-casting, steel casting), stamping die and forging mold; non-metallic mold is also divided into: plastic mold and inorganic non-metallic mold.
According to the different materials of the mold itself, the mold can be divided into: sand mold, metal mold, vacuum mold, paraffin mold and so on. Among them, with the rapid development of polymer plastics, plastic mold and people's lives are closely related. Plastic mold can be divided into: injection molding die, extrusion molding die, gas-assisted molding die, and so on.