Extrusion & Post
10 조회수
EVOH Screw Slippage
문제 현상
During EVOH extrusion, screw slips, feed does not advance, output drops sharply
원인 분석
EVOH pellets melt too early in the feed section forming a lubricating film causing screw slippage; feed section temperature too high
해결 방법
1) Reduce feed section temperature by 10-15°C to delay melting; 2) Deepen feed section flights to increase grip; 3) Dry pellet surfaces to reduce lubrication
핵심 요약
Screw slippage is caused by premature melting; cooling the feed section is key
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