Extrusion & Post
3 조회수
Wrinkles in PET film winding
문제 현상
Transverse or longitudinal wrinkles appear when PET film is wound, increasing the scrap rate.
원인 분석
Winding tension control is improper (too large, too small or uneven); uneven film thickness causes uneven stress distribution; roller surface friction is improper.
해결 방법
Optimize the winding tension curve (tapered tension control); improve thickness uniformity; use spreading rollers and a web guide system.
핵심 요약
PET film winding quality is a comprehensive reflection of thickness, tension and equipment precision.
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