Gypsum wallboard and method of making same
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United States of America Patent
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Dec 20, 2016
Grant Date -
Dec 1, 2011
app pub date -
Aug 11, 2011
filing date -
Jun 14, 2007
priority date (Note) -
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Abstract
A coalescing additive is used in the manufacturing process for gypsum wallboard. Such an additive increases the surface area and density of the slurry at the paper to core interface by coalescing the foam cells away from the paper core interface. This permits a stronger paper to core bond to form and increases the compressive strength of the gypsum wallboard as compared to standard wallboards made from slurries with reduced water levels.
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Cited Art Landscape
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