Extrusion & Post
4 조회수
HDPE blown film bubble instability
문제 현상
The film bubble shakes and wobbles, and the thickness fluctuates greatly.
원인 분석
Insufficient melt strength and extrusion stability; uneven air ring cooling, extrusion output fluctuations, ambient airflow disturbance.
해결 방법
①Stabilize the extrusion output (check feeding and screw); ②uniform air supply from the air ring; ③shield ambient airflow; ④appropriately increase melt strength (adjust temperature/grade).
핵심 요약
Stable bubble = stable extrusion + uniform air ring + quiet environment.
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!