Extrusion & Post
14 visualizaciones
Transverse Ripples on EVOH Extruded Film
Fenómeno del problema
EVOH extruded film surface shows transverse periodic ripples with wavelength 5-10mm
Análisis de la causa
Haul-off roller vibration or unstable rotation speed producing periodic stretching changes; chill roll eccentricity or out-of-round surface causing periodic contact pressure changes
Solución
1) Overhaul haul-off rollers to eliminate vibration; 2) Re-round chill roll with eccentricity <0.02mm; 3) Install pressure stabilizing device on extruder to eliminate pressure fluctuations; 4) Stably control haul-off speed ±0.5%
Conclusión clave
Transverse ripples are caused by haul-off vibration and roll eccentricity; equipment overhaul and stable control are key
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!