Plastic mold injection processing factory

There are many manufacturers of plastic mold injection processing in the Pearl River Delta, and Machico in Dongguan is good. Many of their customers are Japanese, adopting Japanese quality control management mode, and the product quality is very good.

Low speed filling. When the low-speed filling is controlled by heat conduction, the shear rate is low, the local viscosity is high and the flow resistance is large. Because of the slow replenishment speed, slow flow and obvious heat conduction effect of hot plastics, the heat is quickly taken away by the cold mold wall. Coupled with a small amount of viscous heating phenomenon, the solidified layer is thicker, which further increases the flow resistance at the thin wall.

Plastic die:

Include compression molding and injection molding. They are mainly used for molding thermosetting plastics, and the corresponding equipment is pressure molding machine. Compression molding method heats the mold to the molding temperature according to the characteristics of plastic.

Under the action of high pressure, it becomes soft and sticky, and after a certain period of time, it solidifies into the required product shape. The difference between pressure injection molding and compression molding is that there is a separate feeding chamber, and the mold is closed before molding.