Injection Molding
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Material Accumulation and Carbonization on the Nozzle of PBT '2079851475616104452 Machine
Problem Phenomenon
After long-term operation, carbonized material accumulates at the nozzle outlet, affecting melt flow.
Cause Analysis
The nozzle temperature is too high, and the PBT material contacts air for a long time and oxidizes and carbonizes; it is not cleaned when shutting down; the nozzle design has dead corners.
Solution
Appropriately reduce the nozzle temperature; regularly clean the nozzle; use an anti-carbon-deposit nozzle coating.
Key Takeaway
PBT nozzle carbon deposit is a long-term operation maintenance problem.
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