Precision injection molding is affected by many related factors and environmental conditions, and the most basic are the four basic factors of plastic materials, injection molds, injection molding processes, and injection molding equipment.

In the early stage of designing plastic products, engineering plastics with corresponding performance requirements should be selected according to the application environment.

Secondly, the appropriate injection molding machine should be selected according to the selected plastic material, finished product dimensional accuracy, part weight, quality requirements, and expected mold structure.

Among the related factors that affect precision injection molding, molds are the key to obtaining precision plastic products that meet quality requirements.

Mold design

Whether the mold design is reasonable will directly affect the quality of plastic products. Since the mold cavity size is derived from the required size of the plastic product plus the shrinkage rate of the material used, the shrinkage rate is often a value within a range recommended by the plastic manufacturer or engineering plastics manual.