Molding Process
4 مشاهدة
LLDPE film heat sealing problem
ظاهرة المشكلة
Heat seal initiation temperature is high or hot tack strength is low.
تحليل الأسباب
LLDPE has a higher melting point than LDPE, and the heat seal window is different; hot tack is related to the grade (comonomer type).
الحل
①Adjust the heat seal temperature according to the grade; ②select a heat-sealable grade (such as octene copolymer); ③optimize heat seal pressure and time; ④clean the contaminated film surface first.
الخلاصة الأساسية
For heat sealing, first check the grade's melting point and comonomer.
هل كان هذا مفيدًا؟
0 شخص وجدوا هذا مفيدًا
شكرًا لك على ملاحظاتك!