| Gas Assisted Injection Moulding has improved the quality and cost effectiveness of injection moulded components. By using Gas Assisted Moulding parts can be manufactured with enhanced surface finishes, reduced weight, reducing production costs and material usage.
 Reduced material requirements 每 By not having to pack a component the result is a part with a hollow core. In larger components this can save up to 30% in material requirements providing much reduced costs.
Reduced cycle times 每 Due to the nitrogen there is no molten core on the part to solidify which causes a major reduction in cycle times.
Reduced wear on moulds 每 Gas Assisted Moulding can reduce in-mould pressures by up to 70% meaning a lower press lock force is required. This means larger mouldings can be formed in smaller presses and there is less overall wear on the cavity of the tool. These factors help to reduce overall running costs.
Improved component quality 每 The use of gas creates a uniform pressure within the mould cavity. This helps to eliminate sink marks and greatly improves the overall surface finish of the component.
The material applied in gas assisted
A.the plastic applied in gas assisting:
PS,PC,PC/ABS,PC/PBT,PMMA,PES,PAR,ABS,PE,PP,PP/EPDM,PA6,PA66,POM,PBT,PETP,PPS,
LCP,PEEK,PAI
B.The materal be unfit for gas assisted
Resin with high stickiness: highly requiry in gas pressure.
The material with GF swelling: the damage to tooling and gas needle.
Flame retardant Resin: causing causticity gas
Highly mild plastic, e.g.PU :easy to be broken in hollowing.
Equipment of gas assisted injection moulding; 2 sets nitrogen generating units , 6 sets gas pressure control
Typical Molding for gas每assist
Four stages of gas-assist injection molding
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1.Plastic injection |
2.Gas injection |
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3.Gas injeced finishing |
4.Gas pressures |
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