injection molding fault and prevention(13)

塑料成型

5. Sink marks

(front elevation and section)

Fig.5.1:Sink markon the visible side(Cause:Materialaccumulation asshown in Fig.5.2)

Fig.5.2:Materialaccumulation(avoidable by suitable recessing)

6. Voids

Fig.6.1:

Voids at the end of the flow path in a cup

13

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