Molds & Tooling
4 조회수
PP Mold Sticking
문제 현상
Parts stick to the cavity or grip the core tightly, getting scratched during demolding.
원인 분석
Excessive holding pressure, high melt and mold temperature, insufficient draft angle, roughened cavity; PP's shrink-and-grip-core characteristic aggravates sticking.
해결 방법
①Reduce holding pressure and melt temperature; ②increase draft angle; ③polish the cavity along the demolding direction; ④optimize ejection balance.
핵심 요약
For mold sticking, reduce pressure first, then fix draft and polishing.
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