Paper making and fiber liberation – Processes and products – With measuring – inspecting and/or testing
Patent
1995-11-28
1997-11-11
Czaja, Donald E.
Paper making and fiber liberation
Processes and products
With measuring, inspecting and/or testing
162262, 162252, 162263, 36447101, 36447102, 36447103, 36446901, 73159, D21G 100, G05D 500
Patent
active
056859554
ABSTRACT:
A method and apparatus for processing a longitudinally traveling web of material using a sheet treating device positioned in a transverse direction relative to the web. The sheet treating device having a plurality of individually controllable zones for controlling a target parameter of the web, for example, the thickness, bulk, dampness, smoothness or sheen of the web. In conjunction with the sheetmaking device, a measuring instrument for measuring an actual value of the target parameter is placed downstream of the sheet treating device. An actual profile that is determined by the actual values is compared with a desired profile, and the zones of the sheet treating device are adjusted such that the discrepancies between the two profiles are minimized. To improve the matching of the actual profile to the desired profile even further, the web and/or the sheet treating device are shifted relative to the other in the transverse direction to minimize the discrepancies between the two profiles.
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Conrad Hans-Rolf
Leigraf Reinhard
Czaja Donald E.
Fortuna Jos'e A.
Voith Sulzer Finishing GmbH
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