	US 11,772,372 B2
	Sound damping gypsum board and method of constructing a sound damping gypsum board
Joseph J. Bailey, Charlotte, NC (US); Richard Weir, Indian Trail, NC (US); R. G. Iyer, Charlotte, NC (US); Eli Stav, Charlotte, NC (US); and Bradley J. Busche, Shelby, NC (US)
Assigned to Gold Bond Building Products, LLC, Charlotte, NC (US)
Filed by Gold Bond Building Products, LLC, Charlotte, NC (US)
Filed on Jun. 4, 2021, as Appl. No. 17/338,880.
Claims priority of provisional application 63/035,203, filed on Jun. 5, 2020.
Prior Publication US 2021/0379880 A1, Dec. 9, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 37/15 (2006.01); B32B 7/12 (2006.01); B32B 9/00 (2006.01); G10K 11/168 (2006.01)

CPC B32B 37/15 (2013.01) [B32B 7/12 (2013.01); B32B 9/005 (2013.01); G10K 11/168 (2013.01); B32B 2255/26 (2013.01); B32B 2307/102 (2013.01); B32B 2419/00 (2013.01)]

20 Claims

1. A method of forming a gypsum board, the method comprising:

providing a first encasing layer and a first sound damping layer on the first encasing layer wherein the sound damping layer includes at least 50 wt. % of a first sound damping polymer,

depositing a gypsum slurry comprising stucco and water on the sound damping layer to form a gypsum core,

providing a second encasing layer on the gypsum slurry, and

allowing the stucco to convert to calcium sulfate dihydrate.