Material Drying
4 조회수
HDPE injection molded product strength decline
문제 현상
HDPE parts fail mechanical testing, with no appearance abnormality.
원인 분석
Too much regrind, thermal degradation, weld lines passing through stressed areas; or moisture-containing regrind causing internal micropores.
해결 방법
①Control the regrind ratio; ②stabilize heat history; ③keep weld lines away from stressed areas; ④dry the regrind.
핵심 요약
Strength decline with normal appearance = a material history problem.
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