Extrusion & Post
10 조회수
Wrinkling during winding of EAA extruded film
문제 현상
Transverse wrinkles and longitudinal creases appear after winding of EAA extruded film
원인 분석
Film tension uneven, fluctuating ±20%; uneven film thickness causes inconsistent stretching of each section; shrinkage after cooling is anisotropic
해결 방법
1) Automatic tension control system to stabilize winding tension; 2) Improve film thickness uniformity to ±5%; 3) Adjust the guide roller parallelism to <0.05mm/m; 4) Wind after the film is fully cooled to <30°C
핵심 요약
Film wrinkling is caused by tension fluctuations and uneven thickness; automatic tension control and homogenization are the key
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