Injection Molding
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Insufficient Filling in PC '2079851475616104452
Fenómeno del problema
The cavity of large PC products is not completely filled.
Análisis de la causa
The melt viscosity of PC is high and sensitive to temperature; the injection pressure is insufficient; the gate and runner resistance is large; the mold temperature is low.
Solución
Increase the melt temperature to 290-310°C; increase the injection pressure; enlarge the gate and runner; mold temperature 90-120°C.
Conclusión clave
The high viscosity of PC is the main cause of short shot due to poor fluidity.
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