Metering Pump
Vol. 25 #3, Dec. 1998
When a metering pump is added to an existing extrusion process, extruder back pressure must still be monitored and controlled. Back pressure is essential to insure that uniformity problems such as excessive surging or voids (caused by screw design, feed system variation or temperature profile), large melt temperature variation and unmelted resin are still avoided. The metering pump is a metering device and does not correct for such process problems.
- Mark Sewak, LCI Corp.
See also:
- Monitor back pressure
- Surging
Return to
Extrusion Hints