Injection Molding
13 مشاهدة
Uneven crystallization white haze of PET injection products
ظاهرة المشكلة
White opaque areas appear locally on PET products, in obvious contrast with transparent areas.
تحليل الأسباب
Improper mold temperature control; local overcooling causes rapid PET crystallization forming spherulites; when mold temperature below 120°C, crystallization incomplete.
الحل
Increase mold temperature to 130-150°C, use a mold temperature controller for precise temperature control, optimize cooling water channels for uniform mold surface temperature.
الخلاصة الأساسية
PET crystallization behavior is very sensitive to mold temperature; uniform mold temperature is key.
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