Patents Assigned to Hangzhou Dazhuang Floor Co., Ltd.
  • Patent number: 8231757
    Abstract: A method of manufacturing laminated bamboo sliver lumber comprises steps of: preparing bamboo slivers; performing moth-proofing, mildew-proofing, and antiseptic treatments to the bamboo slivers and then drying the bamboo slivers to a moisture content of about 6-15%; machining each dried bamboo sliver to a thickness of about 0.5-3.5 mm (0.02-0.14 in) and a width of about 5-22 mm (0.20-0.87 in) and then dehumidifying the machined bamboo slivers to a moisture content of about 3-10%; applying a glue to the bamboo slivers by glue-coating or “immerging” process, in which a ratio of the glue to an absolute dry weight of the bamboo slivers is about 3-16%; and arranging the glued bamboo slivers with their “width” direction consistent with the “vertical” direction and then pressing the arranged bamboo slivers and curing the glue under a “side” pressure of about 3-15 MPa (0.44-2.18 ksi) and a “top” pressure of about 1-6 MPa (0.15-0.87 ksi) so as to form the laminated bamboo sliver lumber.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: July 31, 2012
    Assignee: Hangzhou Dazhuang Floor Co., Ltd.
    Inventors: Hai Lin, Xufeng Xu, Jiuhong Jin, Hongzheng Liu
  • Patent number: 7225591
    Abstract: A two-ply flooring plank is disclosed having two layers or “plies” with a bottom layer having a grain that runs generally transverse to a top layer or “cross-ply” to provide dimensional stability to the plank. The bottom layer includes a number of strips secured to the bottom of the top layer. The bottom layer strips are also placed with gaps between the individual strips of the second layer to allow flexibility of the flooring plank, which allows the flooring to more easily conform to irregularities in a subfloor upon which the flooring plank is mounted.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: June 5, 2007
    Assignee: Hangzhou Dazhuang Floor Co., Ltd.
    Inventors: Hai Lin, Xufeng Xu
  • Patent number: 7152379
    Abstract: A two-ply flooring plank is disclosed having two layers or “plies” with a bottom layer having a grain that runs generally transverse to a top layer (i.e., “cross-ply”) to provide dimensional stability to the plank. The bottom layer includes a number of strips secured to the bottom of the top layer. The bottom layer strips are also placed with gaps between the individual strips of the second layer to allow flexibility of the flooring plank, which allows the flooring to more easily conform to irregularities in a subfloor upon which the flooring plank is mounted.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: December 26, 2006
    Assignee: Hangzhou Dazhuang Floor Co., Ltd.
    Inventors: Hai Lin, Xufeng Xu, Ping Sheng Zhang, Hai Ping Cao