When first applied, gas-assisted injection molding is considered only as a temporary solution to address the problem of plastic molding parts with large thickness. However, today, it has become a separate field of plastic industry said chung.Nhu know, in injection molding of plastic products, detailed with greater thickness, the higher shrinkage coefficient. This led to the concave defects and warping. Moreover in large molds with textured detail complexity, ability to fill in is very low. Therefore, technology and gas-assisted injection molding is given and has settled very well these issues
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