Shanghai Daoqin Plastics Co., Ltd.

bubbles （ true 空泡） gas separation dilute thin belongs to true 空泡. generally 说, if in mold opening already 发现存 in bubbles is belongs to gas dry issues. true 空泡 形 formed is due to 充注进 plastics or pressure relatively low. in injection molding parts mold cooling function lower, and type 腔接角 燃 material 牵拉, formed loss 失 结果. solutions: （1） improve/increase injection can amount: pressure, speed degree, time and material amount, improve/increase back pressure, make 充模丰满. （2） increase material temperature flow 顺畅. reduce material temperature decrease/reduce shrinkage, improve/increase mold temperature, especially is formed true 空泡部位 local mold temperature. （3） will gate in made parts thick 部份, improvement nozzle, runner and gate flow 状况, decrease/reduce pressure 务 消 consumption. （4）改进 injection molding parts mold gas 状况.