Material Drying
4 조회수
Internal bubbles in products caused by ABS water content
문제 현상
Fine bubbles appear inside the product or in thick-wall areas; holes can be seen when cut open, often accompanied by silver streaks.
원인 분석
When the raw material is wet, water vapor turns into steam in the barrel and mixes into the melt; after filling, it is sealed inside the product to form bubbles; it is most likely to occur when the drying time is insufficient or the ambient humidity is high.
해결 방법
①Strengthen drying (80~100℃, 2~4 hours, moisture content <0.2%); ②appropriately lower the barrel temperature to reduce volatilization; ③increase back pressure to discharge gas; ④improve mold venting.
핵심 요약
For bubbles, check water content first, then check temperature and venting; the order cannot be reversed.
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!