For multi-impression moulds using a basic feed system (Figure 2.3) the sprue would probably be left in the sprue bush each time the mould was opened.

 
  • 多型腔的模具使用一个基本的浇注系统(图2.;3),在每次打开模具的时候,主流道可能会留在主流道衬套内。
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