Extrusion & Post
4 조회수
EVA film printing adhesion
문제 현상
Insufficient printing adhesion.
원인 분석
The match between EVA surface polarity and ink needs verification; improper surface treatment affects adhesion.; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based on experience alone
해결 방법
①Corona treatment to increase surface energy; ②select matching ink; ③test the dyne value before printing; ④conduct adhesion tests.; after adjustment, take consecutive samples to verify the effect, and resume mass production only after confirming stability
핵심 요약
Pre-treatment before EVA printing is indispensable; the dyne value is the release basis.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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