Blow Molding
4 조회수
Severe parison sag in POE extrusion '2079851475616104457
문제 현상
POE extrusion '2079851475616104457 parison sag of 20-40mm causes the bottle bottom wall thickness to be only 0.3-0.4mm
원인 분석
POE melt strength is low, the parison stretches and thins under gravity; slow parison extrusion speed increases sag time; parison temperature too high, low viscosity aggravates sag
해결 방법
1) Add 0.3-0.5wt% slight crosslinking agent to increase melt strength; 2) Increase parison extrusion speed to shorten sag time; 3) Lower parison temperature by 10-15°C to increase viscosity; 4) Wall thickness controller to compensate for sag
핵심 요약
Parison sag is caused by low melt strength; slight crosslinking and wall thickness control are the key
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!