Apparatus for targeted delivery of additives to varying layers in gypsum panels
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United States of America Patent
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Oct 12, 2010
Grant Date -
Jan 29, 2009
app pub date -
Sep 25, 2008
filing date -
Jun 6, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A multilayer gypsum board forming device, and a gypsum additive delivery system in which additives are delivered to one or more layers of a multi layered gypsum board panels, including engineered polymers, includes at least one additive assembly connected in-line with a first gypsum delivery receptacle for providing an additive fluid feed into the stream of a first gypsum slurry being transported through said first gypsum delivery receptacle for homogenously adding an additive to the first gypsum slurry, and a second gypsum delivery receptacle transporting a second gypsum slurry, in fluid communication with the mixer providing the first gypsum slurry, having a different set of characteristics from those of the first gypsum slurry. At least one outer surface including a polymeric compound or wax emulsion additive entrained therein essentially encases the core gypsum within two facing layers.
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