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Hot Runner System Classification

Hot runner system can be divided into heat isolation runner system and heating runer system.
1. Heat isolation runner system Heat isolation runner runner system design is quite thick, so that only a thin layer of plastic around the solidification process. This layer plays a role in the solidification of the plastic insulating layer, so that the center of the plastic flow path is maintained in a molten state. But this mold in the production downtime slug flow generated within the tract, so the current injection molding factory basically do not use this hot runner systems.

2 Heating runer system. Heating hot runner system is maintained by the heater inside the plastic runner systems for molten state. Classification of heating runer system according to the method of heating, the heating system with external and internal heating system. Outside the heating system, the flow path from the external heater, so you can take advantage of unobstructed passage conveying plastic melt, hot runner mold parts insulation measures need to design a variety of different surfaces in contact isolation. The inner heating system, heater flow passage is located in the center of the melt in the periphery of the heater of appropriate size to flow through the annular gap, and only close to the inner side of the annular gap cross-sectional area can be used as a melt. Both systems have their advantages, injection molding companies can choose to use based on the type of plastic and application requirements.

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