Extrusion & Post
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PEEK Film Stretching and Heat Treatment
Fenómeno del problema
【Problem Phenomenon】Unstretched PEEK film has insufficient strength and temperature resistance, with performance far below expectations
Análisis de la causa
Unstretched PEEK film has low crystallinity and limited performance; after stretching and heat treatment, the melting point and mechanical strength are significantly improved, reaching Class C insulation level between PET and polyimide
Solución
Use stretching orientation plus heat treatment process for the film to improve performance; set the draw ratio and heat treatment temperature according to insulation class requirements; do not use unstretched film in high-performance applications
Conclusión clave
PEEK film performance comes after stretching and heat treatment; the original film is only a semi-finished product; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future
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