Extrusion & Post
11 조회수
PET sheet transverse streaks
문제 현상
Periodic transverse lines appear on the sheet, similar to water ripples; thickness measurement is normal
원인 분석
Transverse lines are an inherent defect source of the calendering process: the speed difference between two calender rolls forms imprints; when the speed regulation accuracy of the three rolls is insufficient, transverse lines appear periodically; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
해결 방법
① Improve the speed regulation accuracy of the three-roll calender; ② check the roll system transmission clearance; ③ optimize the haul-off speed matching; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
핵심 요약
PET sheet transverse lines point to roll system speed accuracy; upgrading the speed regulation system can cure such periodic defects better than adjusting the process; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!