Thermoforming
6 مشاهدة
Stress Whitening at the Corners of PCTG Sheet Thermoformed Parts
ظاهرة المشكلة
Whitening appears at the corners or bends of thermoformed products.
تحليل الأسباب
The material is excessively stressed at the corners, producing microcracks/cavities that scatter light and whiten, and the R angle is too small.
الحل
Increase the R angle ≥2mm; increase the sheet heating temperature; optimize the mold design to avoid excessive stretching.
الخلاصة الأساسية
PCTG stress whitening is a manifestation of local excessive deformation.
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