Injection Molding
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Drooling of the nozzle during PLA '2079851475616104452
Problem Phenomenon
PLA melt drools from the nozzle during mold opening.
Cause Analysis
The viscosity of PLA melt is low at the high temperature of the nozzle and it is easy to drool; the back pressure is improper.
Solution
Lower the nozzle temperature; use a shut-off nozzle; manually shoot the material before stopping.
Key Takeaway
PLA nozzle drooling affects automatic production.
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