Extrusion & Post
10 조회수
Glass Fibre extruded film longitudinal streaks
문제 현상
Glass Fibre extruded film surface has continuous streaks along extrusion direction, width 1-3mm
원인 분석
Die lip locally damaged or gap uneven; melt stagnation zone in die produces unstable flow; pressure fluctuation at screw front end
해결 방법
1) Check die lip flatness and gap uniformity ±0.01mm; 2) clean die interior to remove stagnation zone carbide; 3) install gear pump on extruder to stabilize melt pressure; 4) polish die lip to Ra<0.1μm
핵심 요약
Longitudinal streaks are caused by die defects and pressure fluctuation; die maintenance and pressure stabilization are key
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