Injection Molding
5 views
Frequent nozzle clogging during injection
Problem Phenomenon
During injection, the nozzle discharges poorly or even becomes completely clogged
Cause Analysis
Glass fibers aggregate and bridge at the nozzle opening; the nozzle orifice is too small to pass melt containing long fibers; the nozzle temperature is insufficient causing excessive melt viscosity
Solution
Increase the nozzle orifice to ≥5mm; increase the nozzle zone temperature to reduce melt viscosity; use a short nozzle design to reduce the runner length where fibers aggregate
Key Takeaway
Long fiber materials have special requirements for nozzle size and structure
Was this helpful?
0 people found this helpful
Thank you for your feedback!