Hot runner systems are widely used in mould. And the most important part of it is the temperature control part . In order to keep plastic in the machining process of has been in a molten state, hot runner system must adopt various heating methods to keep the temperature. Temperature in this system is relatively high. But in order to get top quality plastic products, mould temperature must be below the glass transition temperature. So the Insulation of hot runner system is very important.

when designing moulds with hot runner system ,we must fully consider the insulation of between the injection machine and mold template bottom plate, runner plate and the bottom plate of the die, flow channel between the plate and the cavity plate, nozzle and the cavity plate .such as, between the injection machine and mold plate template, normally we use 6~10mm. Asbestos to insulate The air gap 3~8mm is often used for insulation between the runner plate and the cavity plate. The melting plastic or the air gap is often used to insulated between the nozzle and the cavity plate. Those are why insu;ation of the hot runner system is important.

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