Molds & Tooling
3 조회수
PET Preform Weld Line
문제 현상
A visible confluence line on the preform body, which is weak after blowing.
원인 분석
Multiple gates or structure make the melt fronts converge; low temperature and poor venting.
해결 방법
①Raise temperature and speed; ②venting; ③hot runner balance.
핵심 요약
Preform weld line = weak band in blowing.
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