公开(公告)号：US20190047914A1

公开(公告)日：2019-02-14

申请号：US15674707

申请日：2017-08-11

申请人： USG INTERIORS, LLC

发明人： Wei XU ,  Thomas M. MAYERS ,  Scott C. BAKKEN

IPC分类号： C04B28/14 ,  C04B14/46 ,  C04B14/18 ,  C04B41/68 ,  C04B41/50 ,  B28B11/24

摘要： Acoustical tile including a dried base mat of: about 70 to about 90 wt % mineral wool; about 5 to about 15 wt % perlite; 0 to about 10 wt % starch; about 3 to about 10 wt % latex; 0 to about 5 wt % gypsum; and less than 5 wt % water. The dried base mat without including glass fibers and without a laminate layer or coating and without perforations has a NRC of about 0.70 or greater, a density of about 10 pcf to about 12 pcf, and a thickness of about ½ to about 1 inch. The acoustical tile can further include a back coating at a surface weight of about 5 grams per square foot (gsf) to about 40 gsf to the dried base mat, wherein the acoustical tile has the CAC rating of about 30 to about 35.