Processing Machinery
8 조회수
Black Speck Impurities in PC Products
문제 현상
Black specks or carbonized matter appear in transparent PC products.
원인 분석
The material stays at high temperature in the barrel for too long and carbonizes, or carbon deposits on the barrel wall fall off; impurities in the raw material.
해결 방법
Reduce the processing temperature and shorten the residence time; purge regularly; use clean raw materials and filtration.
핵심 요약
PC black specks are an indicator light of degradation or contamination.
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