Metso's moisturizer design and demonstrated performance will eliminate a current water spotting and streaking problem, resulting in improved board quality and avoiding broke.

The mill plans to improve top side surface quality and precisely control sheet curl for the liquid packaging board, which is the main grade produced on the 355,000 t/y machine. BM4 has a wire width of 6.95 meters and a maximum design speed of 600 m/min.

Metso IQ CD profiling moisturizer achieves very precise control of CD moisture with four rows of micro droplet nozzles, which are controlled steplessly using linear water control valves equipped with electromechanical actuators and position feedback measurements. The product is an application-matched solution for all paper and board. The installation was scheduled at the end of September 2013.