Asset Optimization Through Data Variation Analysis, 2001 Process Control, Electrical & Info. Conference Proceedings
Kevin Starr--Reducing paper variations has been the goal of paper makers for a long time. Sheet variations have been shown to increase sheet breaks, limit machine speed, and stand in the way of converting and production. Paper quality is directly impacted by process variations. These variations may have their source in bad valves, poor mixing, faulty transmitters, excessive mechanical vibration, or improperly tuned controllers. These variations can all be "seen" with the basis weight sensor. Nearly all of today’s paper machines are equipped with this instrument. This paper will discuss methods and techniques for using the basis weight sensor to categorize product variation. Once product variation has been properly measured, then the source can easily be found and corrective action taken.