Gas-assist injection molding is a process that utilizes an inert gas (normally nitrogen) to create one or more hollow channels within an injection-molded plastic part.

Gas-assist injection molding has been around for well over two decades and many people have had concerns over patent, rights and royalty fees. Within the past few years, some of the original patents have expired. And now, gas-assist injection molding is widely practiced. Design engineers and processors alike are discovering that this technology is an attractive option for certain applications and offers many benefits. It is the responsibility of the manufacturer to ascertain that their practice or technology is not covered by current patents.

Advantages of the gas-assisted injection molding process
1.Reducing stress and warpage
2.Elimination of sink marks
3.Smooth surface
4.Reduced clamp tonnage
5.Elimination of external runners
6.Permitting different wall thickness
7.Cycle time reduction
8.Resin saving

Posted by Nancy

Email: dkm@dakumar.com

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