Jet velocity vector profile measurement and control
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United States of America Patent
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Jul 15, 2008
Grant Date -
May 11, 2006
app pub date -
Nov 10, 2004
filing date -
Nov 10, 2004
priority date (Note) -
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Abstract
In a papermaking system having a headbox to dispense a jet of liquid and paper forming fibers, an improvement comprising at least one sensor arrangement for simultaneously or sequentially measuring in at least one location the jet velocity or jet flow correlation of the jet at plural known angles relative to the machine direction. The measured data is analyzed to generate a velocity vector profile or velocity direction profile of the jet, and hence to determine the profile of fiber orientation angles laid down in the sheet formed of the jet.
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