公开(公告)号：US20170284093A1

公开(公告)日：2017-10-05

申请号：US15476786

申请日：2017-03-31

申请人： CERTAINTEED GYPSUM, INC.

发明人： Choung-Houng LAI ,  Gerald BOYDSTON ,  Bryan WILTZIUS ,  Nathan FRAILEY ,  Michael J. LEMBERGER

IPC分类号： E04C2/26 ,  B32B7/12 ,  B32B27/06 ,  B32B13/04 ,  B32B37/24 ,  B32B37/12 ,  B32B38/00 ,  B32B13/14 ,  B32B27/36

CPC分类号： B32B27/12 ,  B32B3/266 ,  B32B5/022 ,  B32B5/024 ,  B32B7/12 ,  B32B13/02 ,  B32B13/04 ,  B32B13/12 ,  B32B13/14 ,  B32B19/045 ,  B32B27/06 ,  B32B27/281 ,  B32B27/32 ,  B32B27/34 ,  B32B27/36 ,  B32B37/02 ,  B32B37/12 ,  B32B37/153 ,  B32B37/24 ,  B32B38/164 ,  B32B2250/04 ,  B32B2250/05 ,  B32B2250/40 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2255/28 ,  B32B2260/021 ,  B32B2260/044 ,  B32B2262/0276 ,  B32B2262/10 ,  B32B2262/101 ,  B32B2262/14 ,  B32B2307/50 ,  B32B2307/51 ,  B32B2307/536 ,  B32B2307/54 ,  B32B2307/7246 ,  B32B2307/732 ,  B32B2315/085 ,  B32B2315/18 ,  B32B2419/00 ,  B32B2607/00 ,  E04C2/043 ,  E04C2/26 ,  E04C2/528

摘要： A building board including a cementitious layer between two fiber mats. At least one fiber mat forms with a polymer film a fiber mat/polymer film laminate. The cementitious layer of the building board contains a reactive water-insoluble polymer which improves binding of the fiber mat/polymer film laminate to the cementitious layer. The building board has a low water absorption and a high level surface finish.