Extrusion & Post
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Glass Fibre extruded film has transverse ripples
Problem Phenomenon
Glass Fibre extruded film surface transverse periodic ripples, wavelength 5-10mm
Cause Analysis
Haul-off roller vibration or unstable speed produces periodic stretching change; cooling roller eccentric or surface not round causes periodic contact pressure change
Solution
1) Overhaul haul-off roller to eliminate vibration; 2) cooling roller rounded, eccentricity <0.02mm; 3) install pressure stabilizing device on extruder to eliminate pressure fluctuation; 4) haul-off speed stable control ±0.5%
Key Takeaway
Transverse ripples are caused by haul-off vibration and roller eccentricity; equipment overhaul and stable control are key
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