Thermoforming
4 조회수
Stress Whitening at the Corners of PCTG Sheet Thermoformed Parts
문제 현상
Whitening appears at the corners or bends of thermoformed products.
원인 분석
The material is excessively stressed at the corners, producing microcracks/cavities that scatter light and whiten, and the R angle is too small.
해결 방법
Increase the R angle ≥2mm; increase the sheet heating temperature; optimize the mold design to avoid excessive stretching.
핵심 요약
PCTG stress whitening is a manifestation of local excessive deformation.
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