Extrusion & Post
4 조회수
LDPE Film Blocking
문제 현상
Two layers of the film roll stick together, bag opening is difficult, and there are white marks when torn apart.
원인 분석
Insufficient slip agent in LDPE film or insufficient blooming; large winding tension, high film temperature and high storage temperature aggravate blocking.
해결 방법
①Increase antiblock agent/slip agent; ②reduce winding tension; ③cool fully before winding; ④control warehouse temperature.
핵심 요약
Blocking = joint treatment of additive + tension + temperature.
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