Blow Molding
6 مشاهدة
Severe parison sag in POE extrusion '2079851475616104457
ظاهرة المشكلة
POE extrusion '2079851475616104457 parison sag of 20-40mm causes the bottle bottom wall thickness to be only 0.3-0.4mm
تحليل الأسباب
POE melt strength is low, the parison stretches and thins under gravity; slow parison extrusion speed increases sag time; parison temperature too high, low viscosity aggravates sag
الحل
1) Add 0.3-0.5wt% slight crosslinking agent to increase melt strength; 2) Increase parison extrusion speed to shorten sag time; 3) Lower parison temperature by 10-15°C to increase viscosity; 4) Wall thickness controller to compensate for sag
الخلاصة الأساسية
Parison sag is caused by low melt strength; slight crosslinking and wall thickness control are the key
هل كان هذا مفيدًا؟
0 شخص وجدوا هذا مفيدًا
شكرًا لك على ملاحظاتك!