Injection Molding
4 조회수
PETG injection molded product warpage
문제 현상
PETG injection molded flat products bend and warp after demolding, and the flatness is unqualified.
원인 분석
Uneven mold temperature distribution causes inconsistent shrinkage at various parts, large wall thickness differences and uneven cooling, asymmetric molecular orientation.
해결 방법
Optimize mold cooling water channels to make temperature uniform; design the product with uniform wall thickness; appropriately lower the demolding temperature and extend cooling; annealing for shape correction.
핵심 요약
The core cause of PETG warpage is non-uniform shrinkage.
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