Extrusion & Post
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DSTDP extruded film gel particles
Fenómeno del problema
DSTDP extruded film surface shows 0.1-0.5mm transparent gel particles
Análisis de la causa
High molecular weight components in DSTDP not fully melted during extrusion forming local high-crystallinity regions; extrusion temperature on the low side or mixing insufficient
Solución
1) Raise extrusion temperature 5-10°C to ensure full melting; 2) increase screw mixing section length; 3) raw material inspection to ensure grade consistency; 4) replace with a finer screen 120 mesh to intercept unmelted particles
Conclusión clave
Gel particles are caused by insufficient melting; raising temperature and mixing are key
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