Extrusion & Post
10 조회수
Rough EVA extrusion surface
문제 현상
EVA extruded product surface roughness Ra>5μm, exceeding requirement
원인 분석
Extrusion temperature too low <140°C with unstable melt flow; die inner wall rough or damaged; EVA melt elasticity with uneven extrusion swell
해결 방법
1) Increase extrusion temperature to 140-200°C; 2) Polish die inner wall to Ra<0.4μm; 3) Reduce extrusion rate by 10-15%; 4) Add 0.3-0.5wt% external lubricant
핵심 요약
Rough surface is caused by low temperature extrusion and die defects; raising temperature and polishing die are the core countermeasures
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!