Material Drying
5 조회수
TPU Regrind Use
문제 현상
After blending regrind, the toughness of TPU products decreases and color drifts between batches
원인 분석
The heat history of TPU regrind reduces molecular weight; performance cumulatively deteriorates after multiple cycles; an excessively high regrind ratio dilutes the performance of virgin material; hydrolysis sensitivity makes regrind need drying even more
해결 방법
①Control the regrind ratio within 20%; ②use regrind after full drying; ③reduce the ratio or prohibit use for load-bearing parts; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
핵심 요약
TPU regrind management gives equal weight to ratio and drying; the 20% upper limit plus full drying ensures stable performance; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!