Extrusion & Post
10 조회수
Poor Thickness Uniformity of PU Extruded Film
문제 현상
PU extruded film transverse thickness deviation ±15%, exceeding the ±5% industry standard
원인 분석
Die flow channel design unreasonable causing uneven melt flow in the wide die; PU melt elasticity large, extrusion swell uneven; air ring cooling uneven
해결 방법
1) Use coat-hanger die design to ensure uniform transverse flow; 2) Fine-tune die gap ±0.02mm; 3) Optimize air ring air volume and angle for uniform cooling; 4) Add a small amount of low-elasticity resin to reduce swell difference
핵심 요약
Film thickness uniformity requires coordinated optimization from three aspects: die design, gap adjustment and cooling
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!