Gas Assisted Moulding Animation and Process

Gas Assisted Moulding Animation and process

The main two applications of Gas Assisted Moulding are to either inject the gas into the component cavity (internal gas injection), or to use the gas on the outside surface, but still within the mould cavity, to consolidate the component (external gas injection).
Internal Gas Injection - Most widely used process
External Gas Injection - used for enhanced surface definition
A number of variants of gas use are incorporated into the Internal gas injection process:
Full Shot Internal Gas Assisted Moulding Short Shot Internal Gas Assisted Moulding Plastic Expulsion Process … PEP Moving Core Gas Assisted Moulding Gas Cool for Internal and External Gas MouldingEach variant has its uses and benefits. For more information, click here (Cinpres Web Page)
Why Gas Injection Moulding?
Techniques have been developed whereby inert gas nitrogen is injected into the still molten plastic in the mould cavity. Acting from within the component shape, the gas inflates the component and counteracts the effects of the material shrinkage. The effect is to keep an internal pressure on the material until it solidifies and skins at the mould cavity surface. This is independent of any gate freezing.

Internal Gas Injection - Most widely used process


External Gas Injection - used for enhanced surface definition