Extrusion & Post
10 조회수
Poor printing adhesion of EVA film
문제 현상
After printing EVA film, ink adhesion <2 grade with large-area peeling in cross-cut test
원인 분석
EVA surface polarity has poor affinity with ink; corona treatment effect decays fast; ink system not matching EVA
해결 방법
1) Print immediately after corona treatment within 24h; 2) Use EVA dedicated ink; 3) Increase corona power to 15-20kW/m² to ensure surface tension >42mN/m; 4) Flame treatment to assist surface polarization
핵심 요약
Poor printing adhesion is caused by insufficient surface polarity; corona treatment and dedicated ink are key
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!