Method to control response shape of footprint for zone moisture control on a steambox and maintain screen plate cleanliness
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United States of America Patent
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Sep 29, 2015
Grant Date -
Aug 1, 2013
app pub date -
Jan 31, 2012
filing date -
Jan 31, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A steam distributor includes multiple steam discharge chambers that are separated by laterally spaced apart partition panels that create corresponding profiling zones. The profiling zones are covered by a perforated screen plate through which steam passes onto a moving sheet that is traveling in the machine direction. One or more of the partition panels is not aligned in the machine direction so that one or more of the steam discharge chambers defines a non-rectangular profiling zone. The orientation of one or more of the baffles can be adjusted in order to control the response shape of the steam footprints on a moving sheet for zone moisture control. The panels can be articulated to allow dynamic adjustments of the profiling zones for cross direction response control.
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