Injection Molding
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Insufficient filling of PBT '2079851475616104452 (short shot)
Fenómeno del problema
The cavity is not completely filled during PBT '2079851475616104452, and the product is short of material.
Análisis de la causa
The melt temperature is too low, the PBT viscosity is large and the flowability is poor, the injection speed and pressure are insufficient, the gate or runner is too small, and the mold temperature is low.
Solución
Raise the melt temperature to 240-260°C; increase the injection pressure and speed; increase the gate size; mold temperature 80-100°C.
Conclusión clave
PBT short shot is directly related to temperature and gate size.
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