Molds & Tooling
6 مشاهدة
Eccentric wall thickness of PET preforms
ظاهرة المشكلة
PET preform wall thickness is uneven with obvious eccentricity, thick on one side and thin on the other.
تحليل الأسباب
The core and cavity are not concentric (insufficient mold machining precision or assembly deviation); runner design causes uneven melt flow around the core.
الحل
Improve mold machining and assembly precision (concentricity ≤0.02mm); optimize the runner for uniform circumferential distribution; appropriately reduce injection pressure.
الخلاصة الأساسية
PET preform eccentricity directly affects bottle blowing quality; mold precision and filling balance are fundamental.
هل كان هذا مفيدًا؟
0 شخص وجدوا هذا مفيدًا
شكرًا لك على ملاحظاتك!