Valmet IQ Slice Profiler

Valmet IQ Slice Profiler (IQ Slice Profiler) is a headbox slice positioning system which controls the headbox slice to achieve the best weight profile a headbox can produce.


The IQ Slice Profiler is a network of intelligent actuators working together through a bus. Advanced microadjusters drive the rods attached to the slice lip, and a position sensor measures the current position of the rod. The possible deviation between the setpoint and the corresponding measuring value is corrected with a closed-loop controller that uses a stepping motor. Theactuator setpoints can be defined either from the Valmet IQ CD Controls or similar basis weight control, or remotely usingmanual setpoints defined at the control room monitor.


  • Increased Printing/Packaging machine performance due to flatter CD basis weight profiles

  • Raw material saving due to possibility run with lower grammages

  • Faster grade changes and disturbance recovery improves efficiency

  • Increased machine runnability due to better edge profile control