Extrusion & Post
10 조회수
EAA vacuum section overflow
문제 현상
Material overflow at the vacuum section of EAA extrusion, vent hole blocked
원인 분석
EAA melt viscosity low and overflowing at the vacuum section; vacuum section temperature too high making viscosity even lower and aggravating overflow; improper vent hole design
해결 방법
1) Reduce vacuum section temperature by 5-10°C to increase viscosity; 2) Add a baffle above the vent hole to prevent overflow; 3) Increase screw speed to accelerate conveying and reduce residence time
핵심 요약
Overflow is caused by low melt viscosity; lowering temperature and adding a baffle is key
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