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Size Press3.1.Machine directionFaulty size press roll can be detected and identified since the starch variation can be detected by TAPIO. 3.2.Cross direction If the starch profile is not even it can be detected by TAPIO profile measurements. 3.3.Actions Usually replacement of faulty roll. 3.4.Benefits More consistent quality Coating head4.1.Machine directionMachine direction coat weight variation, and its effect to paper gloss can be detected and its cause identified by the help of TAPIO. Usually MD variations are caused by the backing rolls or application blades and rods etc. By idetifying and rectifying, a backing roll problem the TAPIO PMA User was able to increase the coater speed by 350m/min (1150 ft/min) *Case by UPM-Kymmene, Kaukas mill 4.2.Cross direction Since TAPIO measures basis weight and ash exactly at the same location the TAPIO ash profiles are very accurate. Even small streaks can be detected and the causes identified. 4.3.Actions Roll changes, better grinding and different roll designs have proven to be very effective. 4.4.Benefits Better runnability, better printability and material savings are made possible by more even coating. Major savings are achieved through the reduced breaks. >> Paper machine wet end & Press part Size press & Coating head >> Calenders & Paper Formation >> Quality control & On-Line vs. TAPIO measurements |
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