Pearl River Delta this kind of plastic mold injection molding processing manufacturers are more, Dongguan City, Machiko is good. Many of their customers are Japanese, using the Japanese quality control management model, product quality is very good.
Low-speed filling. Thermal conduction control low speed filling, the shear rate is lower, local viscosity is higher, and the flow resistance is higher. As the thermoplastic replenishment rate is slower, the flow is slower, so that the heat conduction effect is more obvious, the heat is quickly taken away for the cold mold wall. Coupled with a small amount of viscous heating phenomenon, the thickness of the cured layer is thicker, and further increase the wall of the thinner part of the flow resistance.
Plastic compression mold:
Including compression molding and pressure injection molding two types of structural molds. They are a class of molds mainly used to mold thermosetting plastics, and their corresponding equipment is a pressure molding machine. The compression molding method heats the mold to the molding temperature according to the characteristics of the plastic.
High-pressure action is softened viscous flow, after a certain period of time after the solidification of molding, to become the desired shape of the product. Pressure injection molding and compression molding is different from a separate charging chamber, mold closed before molding.