Material Drying
4 مشاهدة
Silver Streaks in PCTG Injection Molded Products
ظاهرة المشكلة
Silver or white fine streaks appear on the surface of PCTG products.
تحليل الأسباب
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.
الحل
Fully dry to moisture <0.03%; increase the back pressure to 0.5-1.0MPa for venting; reduce the barrel temperature.
الخلاصة الأساسية
PCTG silver streaks mainly originate from moisture and gas.
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