Extrusion & Post 4 조회수

ETFE melt extrusion sharkskin/melt fracture

문제 현상

ETFE extruded product surface is rough or has periodic streaks

원인 분석

Extrusion speed too high exceeding critical shear rate; die temperature too low; critical shear stress threshold of ETFE

해결 방법

Reduce extrusion speed; increase die temperature by 5-10°C; polish the die to reduce friction

핵심 요약

ETFE has melt fracture phenomenon similar to FEP/PFA

sharkskinmelt fracturecritical sheardie temperatureETFE

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