Blow Molding
15 مشاهدة
HDPE '2079851475616104457 parison die lines (Die Lines)
ظاهرة المشكلة
Longitudinal line marks on the parison surface, still visible after '2079851475616104457.
تحليل الأسباب
Foreign matter or degraded material caught between the die and mandrel; die damage and carbonized buildup also cause streaks.
الحل
①Clean the die of foreign matter and buildup; ②check the die for damage and polish; ③increase resin temperature and back pressure to improve plasticization; ④check raw material contamination.
الخلاصة الأساسية
For parison line marks, clean the die first, then check the material.
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