Molds & Tooling
7 visualizações
PSU Nozzle Drool and Cold Slug
Fenómeno do problema
In PSU processing, nozzle drool and cold slug blockage alternate; gate defects on products occur frequently; production continuity is poor.
Análise das causas
PSU melt has high viscosity and generally does not drool, but it still can when nozzle temperature is out of control; the nozzle orifice must be larger than 5mm with a heated temperature-controlled extended nozzle; improper temperature causes cold slug blockage.
Solução
①Select an extended nozzle equipped with a heating and temperature control device; ②Nozzle orifice larger than 5mm; ③Precisely control nozzle temperature; ④Regularly inspect the nozzle heating system.
Conclusão principal
The high-viscosity characteristic of PSU allows large-orifice nozzle design; extended heated nozzles are standard; fine temperature management avoids both extremes.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!