Plastic shrinkage, as well as the various factors affecting the product dimensional accuracy, such as mould manufacturing and assembly errors, die wear. In addition, the design of compression moulds and injection mould, but also consider the process of moulding machines and structural parameters of the matching has been widely used in plastic mould design and computer-aided design technology.

　　Plastic mould design and manufacturing of plastic processing is closely related to success or failure depends largely on the mould design effects and mould manufacturing quality plastic mould, plastic mould design and plastics design.