Abstract
AbstractGas‐assisted injection molding has been developed to solve the problems that the conventional injection molding process is not able to. It is believed that the new process is able to produce final parts with higher quality at a more effective cost. Warpage and sink marks are reduced and there is material‐savings to be reaped. This research aims to investigate some of the processing parameters that come with this new process. They include shot size, gas delay time, gas pressure, and melt temperature. The influence of part design is also looked into. Five designs were used in the research and compared. The responses evaluated include gas bubble length, residual wall thickness, bending strength, warpage, and fingering. © 2001 John Wiley & Sons, Inc. Adv Polym Techn 20: 270–280, 2001
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