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  1. Noel.Abaricia

    Whitish mark in the living hinge of flip top cap

    Hi, I'm Noel, handling injection molding stuffs. I would to ask regarding living hinge problem in PP flip top caps. We observed a whitish mark in the living hinge of the flip top cap. This happened right after ejection in the mold Is this normal or if not, what would be the probable causes and...

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