Extrusion & Post
10 조회수
Melt instability when extruding PEI film
문제 현상
Melt edge fluctuation and uneven thickness occur during film extrusion
원인 분석
PEI melt strength is insufficient to maintain the shape after exiting the die; the extrusion temperature window is narrow and difficult to adjust
해결 방법
Optimize the extruder screw design to improve plasticization uniformity; use a melt pump to stabilize extrusion pressure; increase the die temperature to improve exit flowability
핵심 요약
PEI extrusion molding has strict requirements on equipment and process parameters
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