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Gas-assisted Injection Mould

as Assist injection moulding is normally applicable for components in which there are thick sections. Gas assist injection moulding is able to reduce the weight and reinform the plastic components after its molding finish. It is widely applied for gas assist injection moulding in chair mould, table mould, automotive mould and so on. Sino made gas-assisted injection mould annully 100sets, and own our own equipment for injection with gas assist injection moulding technology.  

The gas assist injection moulding theories:

After mould closing, the plastic is injected to fill or nearly fill the mould cavity.After a selected time delay, first phase is gas injected.

Second phase gas penetration to compensate for volumetric shrinkage of the plastic as it cools.

A uniform gas pressure is applied throughout the plastic.

Gas is exhausted to atmosphere or for recovery before mould opens.

Plastic refill commences after the nozzle valve is closed or after the plastic feed gate has solidified.

Gas Assist injection moulding typical applications:

The gas flows into the path of least resistance in the thicker sections where the plastic interior is still in a molten state.

Gas Assist injection moulding is normally applicable for components in which there are thick and thin sections.

Gas Assist injection moulding advantages

Elimination of sink marks.

Avoidance of plastic packing from the moulding machine.

Reduced in-mould pressures by up to 60%, and therefore reduced press lock forces enabling larger

The use of the gas injection moulding as a means of transmitting pressure uniformly throughout the moulding.

mouldings on much smaller machines.

Reduced power consumption.

Reduced moulded in stress, and therefore improved dimensional stability with no distortion.


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Sino Moldings is a qualified Molding Supplier in China, offers good price Plastic Moldings worldwide.
China Plastic Molding company-SINO is Chinese Plastic Molding technologies innovator, Chinese Plastic Molding supplier and China Plastic Molding Company.
With advanced plastic Injection Moulding Process, Services & technology, Sinomould stands as a famous Plastic Injection Molding manufacturer and supplier in China.

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Sino Mould Co., Ltd
Add :
369# XinJiang Rd., Xinqian Street, Huangyan Taizhou, Zhejiang, China
P.C. 318020
Tel : 8613505867256
Tel : 86 576 84023777
Fax : 86 576 84018996
E-mail: sino-mould@hotmail.com

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