hot runner system
hot runner system
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Hot runner system


Hot runner system

                                               -----------------Anole hot runner

Hot runner system is consist of nozzle,manifoldand the temperature controller box.Hot runner system now is becoming the perfect way of injection moulding structure.

The working priciple of hot runner system:Install the heaters in the plastic mould,Controll the heating and the temperature to keep the mould sprue in a molten state.This looks like the injection molding machine extends its fort to the product cavity's plastic point,make the products more direct relaxed to shape.

Generally speaking,hot runner system contains:
Internal heating system(COOL ONE)
External heating system:1.single point nozzle hot runner system (HOT SPRUE BUSHINGS)
2.multipoint nozzles hot runner system (HOT ONE/GATE-MATE)
3.valve gate nozzle hot runner system (POLYVALUE)

Why there comes hot runner system technology?
What advantages would hot runner system technology bring to us?Most people who acquainted with injection craft knows conventional injection moulding would appear disadvantages usually as follows:
1.Difficulty in filling mould
2.Thin wall deformation of the big parts
3.Waste of raw materials
4.different quality of the cavities mould injection molded parts

With the development of the hot runner,these problems are provide a relatively complete solutions.In general,Adopt the hot runner will bring the following advantages:
1.Save the raw material,reduce the cost.
2.Decrease the molding cycle,develop the working efficiency
3.Improve the products surface quality and the machanical property                             
4.Use the pin point gate without the three board type mould
5.Make it economical through side gate molding single product
6.Increased automation.
7.Available valve gate control gate frozen
8.consistently cavities mould injection molded parts quality
9.Improve the beauty degrees of injection products surface


However every technology usually exist its shortcoming,let alone the hot runner system.
1.The complex structure of mould,high cost,so the high maintenance cost
2.Begin to work need some time to process to be stable, cause more waste.
3. Appear the melt leak,heating element fault, make big effects on the product quality and production progress

For these three shortcomings,we should pay more attention,through purchase superior quality heating element,manifold and nozzle.using carefully,can reduce the appearance of these unfavorable condition.

Kewords:hot runner system   

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