The paper introduces the craft process in the creation of skin figure on the injection mould core. And designs the corrode solution and photopolymer, discusses the theory of decorate technology.

According to GT principle, a set of coding system for injection mold is built on the base of injection mold structure feature and function analysis by sorting out the classification mark.

The forming technology was analyzed, including drying of PET resin and the temperature control of mold work section. The construction of a hot runner mold and its mechanism were described.