Gypsum wallboard process
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United States of America Patent
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N/A
Issued Date -
Oct 14, 2004
app pub date -
Feb 2, 2004
filing date -
Jan 31, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method of manufacturing gypsum board includes applying compressed air to an input end of a tube, wherein the tube includes the input end, an output end, and a venturi located between the input end and the output end; admitting a foaming agent to the input end of the tube so as to form a mixture of the compressed air and the diluted foaming agent; passing the mixture through the venturi and out the output end; combining the mixture with gypsum and water to form a gypsum slurry; and casting the gypsum slurry onto a continuous web for forming a gypsum board.
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Cited Art Landscape
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