SEED CRYSTAL COATING FOR GYPSUM WALLBOARD FACING
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United States of America Patent
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Issued Date -
Dec 23, 2010
app pub date -
Jun 21, 2010
filing date -
Jun 22, 2009
priority date (Note) -
Abandoned
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Abstract
Facing material useful in the manufacture of gypsum wallboard is surfaced treated in order to adhere an amount of seed crystals to improve the adhering affinity of the facing material for wet plaster thereby permitting the manufacture of gypsum wallboard with little or no added starch and reduced amounts of water. Various means for adhering the seed crystals to the facing material are described as well as, a method of converting the facing material and wallboards containing the facing material are also described.
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