Material Drying
7 조회수
Silver Streaks in PCTG Injection Molded Products
문제 현상
Silver or white fine streaks appear on the surface of PCTG products.
원인 분석
The raw material moisture content is high (>0.05%), and the water vaporizes during processing to produce silver streaks; the back pressure is insufficient and the barrel contains air.
해결 방법
Fully dry to moisture <0.03%; increase the back pressure to 0.5-1.0MPa for venting; reduce the barrel temperature.
핵심 요약
PCTG silver streaks mainly originate from moisture and gas.
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