Molding Process
4 조회수
Poor adhesion of PET vacuum aluminized film
문제 현상
After vacuum aluminizing of PET film, the aluminum layer has poor adhesion and easily falls off or scratches.
원인 분석
Low surface energy of PET film (about 30-36mN/m), surface contamination (oil, dust), improper aluminizing process parameters.
해결 방법
Corona treat PET film to dyne value ≥42mN/m; ensure film surface cleanliness; optimize aluminizing parameters vacuum ≤5×10⁻⁴Pa.
핵심 요약
PET aluminized film adhesion depends on surface treatment and coating process.
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