Molds & Tooling
4 조회수
Post-shrinkage of PAR products
문제 현상
The product continues to shrink and change in size after demolding.
원인 분석
PAR cools quickly but still undergoes post-shrinkage (physical aging) below Tg.
해결 방법
Fully cool in the mold; anneal at 150°C after demolding to release stress.
핵심 요약
PAR post-shrinkage affects dimensional accuracy.
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