公开(公告)号：US11002010B2

公开(公告)日：2021-05-11

申请号：US16356303

申请日：2019-03-18

Applicant: United States Gypsum Company

Inventor： Suman Sinha Ray ,  Mark Antosh ,  Mark Hemphill ,  Yijun Sang

IPC: E04C2/04 ,  B32B7/12 ,  B32B13/04 ,  B32B37/24 ,  E04B2/72 ,  E04B2/00 ,  E04B1/84 ,  E04B1/86 ,  G10K11/168 ,  E04B1/82 ,  B32B13/08 ,  B32B13/12 ,  E04B1/74

Abstract: A layered gypsum wallboard can include: a gypsum board having opposing front and back faces, wherein the gypsum board comprises a first cover sheet material at the front face, a second cover sheet material at the back face, and a gypsum core layer comprising gypsum; an adhesive layer on the second cover sheet material of the gypsum board, the adhesive including a polymer having a glass transition temperature (Tg) of −10° C. to 30° C.; an intermediate gypsum layer including gypsum on the adhesive layer such that the adhesive layer is between the second cover sheet material and the intermediate gypsum layer, wherein the adhesive layer and the intermediate gypsum layer have a combined thickness of 0.09 inches to 0.25 inches; and a third cover sheet material, wherein the intermediate gypsum layer is between and in contact with the adhesive layer and the third cover sheet material.