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Principle of injection molding machine and injection syringe are similar, it is by means of screw (or plunger) of thrust, will have the good plasticization molten state (that is, viscous flow) within the cavity of plastics injection into the closed well after curing process of shaped after the products.

Injection molding is a cyclical process, each cycle includes: quantitative feeding-put pressure on melting plastic-injection-molding cooling-Kai model pickup. Remove the plastic part and then shut again, move on to the next cycle. Injection molding is a cyclical process, each cycle includes: quantitative feeding-put pressure on melting plastic-injection-molding cooling-Kai model pickup, remove the plastic and then shut again, move on to the next cycle.