Molding Process
7 مشاهدة
Poor adhesion of PET vacuum aluminized film
ظاهرة المشكلة
After vacuum aluminizing of PET film, the aluminum layer has poor adhesion and easily falls off or scratches.
تحليل الأسباب
Low surface energy of PET film (about 30-36mN/m), surface contamination (oil, dust), improper aluminizing process parameters.
الحل
Corona treat PET film to dyne value ≥42mN/m; ensure film surface cleanliness; optimize aluminizing parameters vacuum ≤5×10⁻⁴Pa.
الخلاصة الأساسية
PET aluminized film adhesion depends on surface treatment and coating process.
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