Extrusion & Post
10 조회수
Transverse corrugations in EAA extruded film
문제 현상
Transverse periodic corrugations with a wavelength of 5-10mm on the surface of EAA extruded film
원인 분석
Vibration of the haul-off roller or unstable speed produces periodic stretching changes; eccentric cooling roller or out-of-round surface causes periodic contact pressure changes
해결 방법
1) Overhaul the haul-off roller to eliminate vibration; 2) Round-calibrate the cooling roller, eccentricity <0.02mm; 3) Install a pressure stabilizing device on the extruder to eliminate pressure fluctuations; 4) Stably control the haul-off speed ±0.5%
핵심 요약
Transverse corrugations are caused by haul-off vibration and roller eccentricity; equipment overhaul and stable control are the key
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