Thermoforming
4 조회수
Brittleness of PET sheet thermoformed products
문제 현상
PET thermoformed food trays are brittle, break when bent, and have poor toughness.
원인 분석
Excessive crystallization during sheet heating (staying too long in the crystallization temperature zone); improper forming temperature; sheet IV is on the low side with too much recycled material.
해결 방법
Heat quickly to shorten the stay in the crystallization temperature zone; forming temperature 100-120°C; use sheet with IV≥0.70; fully dry before forming.
핵심 요약
The brittleness of PET thermoformed products is related to excessive crystallization and material degradation.
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!