Extrusion & Post
6 مشاهدة
Unstable film bubble in PLA blown film process
ظاهرة المشكلة
The film bubble swings and breaks during the PLA blown film process.
تحليل الأسباب
The PLA melt strength is low, the film bubble is greatly affected by the air flow and is unstable, and the cooling is uneven.
الحل
Use melt strength enhanced PLA (branched PLA); stabilize the cooling air ring.
الخلاصة الأساسية
PLA blown film needs to enhance the melt strength.
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