Title:
CEMENTED WOODEN BOARD
Document Type and Number:
Japanese Patent JP3499200
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To produce a cemented wooden board having high strength, excellent dimensional stability and superior properties with respect to decorative design by effectively utilizing a cemented wooden board waste material.
SOLUTION: The production process for this cemented wooden board comprises subjecting a cemented wooden board waste material to primary crushing into a primarycrushed material 1 by an impact crusher, further subjecting the primary-crushed material 1 to secondary crushing into a secondary-crushed material 1A by a grinding mill, classifying the secondary- crushed material 1A into coarse powder having 45-1,000 μm, or desirably 75-1,000 μm grain size, and fine powder having 1-500 μm, or desirably 1 to <75 μm grain size, and using the coarse powder as a raw material for a surface layer and a rear layer of the cemented wooden board and also using the fine powder as a raw material for a core layer of the cemented wooden board.
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Inventors:
Takeo Shimizu
Hidenori Kawai
Hidenori Kawai
Application Number:
JP2000266703A
Publication Date:
February 23, 2004
Filing Date:
September 04, 2000
Export Citation:
Assignee:
Nichiha Co., Ltd.
International Classes:
B09B3/00; B32B13/02; C04B18/16; C04B28/02; C04B32/02; E04C2/26; E04C2/04; (IPC1-7): C04B28/02; B32B13/02; C04B18/16; E04C2/04; E04C2/26
Domestic Patent References:
| JP6293548A | ||||
| JP10245254A | ||||
| JP9286657A | ||||
| JP7124927A | ||||
| JP2001130941A |
Attorney, Agent or Firm:
Tadao Usami