Extrusion & Post
10 조회수
DSTDP extruded film poor thickness uniformity
문제 현상
DSTDP extruded film transverse thickness deviation ±15%, exceeding the ±5% industry standard
원인 분석
Unreasonable die flow channel design causes uneven melt flow in the wide die; DSTDP melt elasticity large, extrusion swell uneven; air ring cooling uneven
해결 방법
1) Adopt coat-hanger die design to ensure uniform transverse flow; 2) fine-adjust 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 needs coordinated optimization from the three aspects of die design, gap adjustment and cooling
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