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