Injection Molding
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PETG injection molded product sticking at the hot runner gate
Fenómeno do problema
During demolding of PETG products, the residual sprue at the gate sticks to the hot runner nozzle opening.
Análise das causas
The gate area temperature is high and melt viscosity low causing stringing, the hot runner valve pin does not close tightly, cooling insufficient and gate strength inadequate.
Solução
Precisely control the gate area temperature; check valve pin action and sealing; strengthen cooling at the gate location.
Conclusão principal
PETG hot runner gate sticking requires investigation from temperature and mechanics.
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