Injection Molding
13 مشاهدة
Translucent/Hazy PBT Injection-Molded Parts (Non-Transparent Grade)
ظاهرة المشكلة
Partially translucent or hazy areas appear in natural-color non-transparent PBT products.
تحليل الأسباب
The local area is not fully crystallized (rapid cooling causes incomplete crystallization), and the optical properties of this area are different from those of the fully crystallized area.
الحل
Increase the mold temperature to ensure uniform crystallization; extend the cooling time; anneal the product to homogenize crystallization.
الخلاصة الأساسية
PBT haziness is the optical manifestation of uneven crystallization.
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