Injection Molding
13 مشاهدة
Warpage deformation of PET injection molded parts
ظاهرة المشكلة
PET injection molded products warp after demolding, with flatness exceeding the tolerance range.
تحليل الأسباب
Uneven mold temperature distribution causes inconsistent crystallinity and shrinkage rates in various areas; uneven wall thickness causes cooling differences; molecular orientation is asymmetric.
الحل
Equalize mold temperature (within ±3°C); design products with uniform wall thickness; optimize gate position; extend cooling time.
الخلاصة الأساسية
The root of PET warpage lies in uneven shrinkage.
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