Extrusion & Post
4 조회수
LDPE Film Wrinkles
문제 현상
Longitudinal and transverse wrinkles appear on the wound film surface, and some wrinkles cannot be smoothed out.
원인 분석
Uneven die head installation, off-center collapsing frame and haul-off rolls, and non-level nip rolls are mechanical causes; film bubble deformation, improper cooling and inconstant tension are process causes.
해결 방법
①Correct die head levelness and alignment of all parts; ②adjust the collapsing frame opening angle to match the bubble tube diameter; ③stabilize the film bubble and cooling; ④adjust winding tension to be constant.; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
핵심 요약
Wrinkle troubleshooting goes mechanical first and process second; alignment correction can solve most stubborn wrinkles.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!