公开(公告)号：US11624185B2

公开(公告)日：2023-04-11

申请号：US16771507

申请日：2018-12-20

申请人： YOSHINO GYPSUM CO., LTD.

发明人： Yukiko Chatani ,  Mariko Seki ,  Takahiro Hebiishi ,  Eiichi Kuroda ,  Wataru Ohuchi ,  Takuji Yamashita ,  Kouji Yamakata

IPC分类号： E04B1/94 ,  C04B11/00 ,  F16L5/04 ,  B32B1/08 ,  B32B13/04 ,  C04B111/00 ,  C04B111/28

摘要： A penetration part fireproof covering material used when a penetration part covered for fireproof is formed in a fireproof beam that is a fireproof constructional member that constitutes a wooden building, wherein the penetration part fireproof covering material is formed to have a tubular shape by stacking a plurality of gypsum board pieces (13a) formed from gypsum boards in a thickness direction and unitarily connecting the plurality of gypsum board pieces. The penetration part fireproof covering material is formed to have the tubular shape by stacking the plurality of gypsum board pieces that preferably have an annular shape and are cut out from commercially available gypsum boards having thicknesses of 9.5 mm to 25.5 mm while fixing the plurality of gypsum board pieces to each other preferably using metal fasteners such as staples, and unitarily connecting the plurality of gypsum board pieces.