Injection Molding
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Difficulty in Removing Flash from PBT Injection-Molded Products
Fenómeno del problema
The product flash is thin and tough, making manual removal difficult.
Análisis de la causa
PBT has good toughness; the flash is not brittle and is not easy to break off; although the flash thickness is thin, its strength is high.
Solución
Reduce flash generation (increase the clamping force and reduce the injection pressure); use automatic deflashing equipment (cryogenic deflashing).
Conclusión clave
PBT flash has good toughness and high removal cost.
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