Extrusion & Post
12 مشاهدة
EVA extruded film has transverse corrugations
ظاهرة المشكلة
EVA extruded film surface has transverse periodic corrugations with wavelength 5-10mm
تحليل الأسباب
Traction roller vibration or unstable rotation speed producing periodic stretching changes; cooling roller eccentricity or out-of-round surface causing periodic contact pressure changes
الحل
1) Overhaul the traction roller to eliminate vibration; 2) Round the cooling roller with eccentricity <0.02mm; 3) Install a pressure stabilizing device on the extruder to eliminate pressure fluctuations; 4) Stable control of traction speed ±0.5%
الخلاصة الأساسية
Transverse corrugations are caused by traction vibration and roller eccentricity; equipment overhaul and stable control are key
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