The production of toys is mainly made by toy injection molding machines. There are four stages in the production process, namely filling, holding pressure, cooling, and demoulding. Under the push of the screw, the plastic is injected into the closed cavity. During the advancing process, the plastic rubs against the cavity wall, and the heated plastic becomes molten. Under high pressure, molten plastic is injected into the mold cavity for molding. After cooling, forming and solidifying, it is the final product.