Method of manufacturing a board
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United States of America Patent
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Nov 23, 1999
Grant Date -
N/A
app pub date -
Apr 1, 1998
filing date -
Apr 30, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods of manufacturing board products include the steps of drying lignocellulosic material in a first stage dryer, further drying the lignocellulosic material in a second stage dryer, forming the dried lignocellulosic material into a mat, hot pressing the mat, utilizing the pressed air stream from the hot pressing step and a supply of fresh air as the source of drying air for the first and second stage dryers, utilizing the exhaust air from the second stage dryer as a source of drying air for the first stage dryer, and utilizing the exhaust air from the first stage dryer as a source of drying air for the first stage dryer and as a source of combustion air in a furnace.
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