WHAT  is “Gas Assist Injection Molding” ?
Gas assist is significant auxiliary injection method to injection molding process, that of major structure made of the high pressure pneumatic cylinder, air valves at the beginning of gate and end of filling ,which can makes the unusual thicker products without shrinkage and keep good mechanical intensity.

Gas assist injection molding is a lower pressure molding process that injecting the controlled streaming of nitrogen or carbon dioxide gas into the mold while resin material injected. The main function of gas assist are to displace the material in pre-destined thick area and make this area with hollow sections to avoid shrinkage and keep good mechanical property. In contrast, conventional injection molding process cannot eliminate shrinkage ,filling defects and material losses for the special thicker wall parts.

This method offers many injection molding, cosmetic surface and mechanical performance advantages over other large & thicker part molding processes. It allows the different wall thickness area are molded with tighter connection without any stress concentration and crack issue, it’s the best way to forming the parts with thicker support ribs,bosses or hollow features and with requiring minimal or even no secondary operations.

We’ve proficient in gas assist injection molding and it’s toolings, our tooling experts will give you the best optimized advises of your parts & toolings(i.e. parting line, gas channel , gas nozzle, gate position set ect.), and had offered many qualified gas assisted molds to customers who involve in household appliance, automotive and medical industries ect.