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Document Type and Number:
Japanese Patent JP6913575
Kind Code:
To provide fire-resisting wooden structural material with excellent fire-resistance and easy production feature which allows fire to be suppressed.SOLUTION: Fire-resisting wooden structural material 1 of the present invention formed in a square bar comprises a load support part 11 and a layer 12 to be allowed to burn which is formed along at least three side surfaces of four surfaces extending along a longitudinal direction. Each of both sides sandwiching the load support part 11 in one direction Y of a cross section comprises a first lamina laminated layer 13 of which a lamina laminating direction is a direction X orthogonal to the one direction Y, and a second lamina laminated layer 14, 14 of which a lamina laminated direction is the direction Y at both ends in the direction X. The layer 12 to be allowed to burn surrounding four surfaces of the load support par 11 is formed with the first lamina laminated layer 13, 13 and the second lamina laminated layer 14, 14. The first lamina laminated layer 13, 13 and the second lamina laminated layer 14, 14 are laminated in a way that each lamina configuring those lamina laminated layers has no surface attaching wooden surfaces to each other.SELECTED DRAWING: Figure 1

Takahiro Snakeishi
Hiroyuki Ishigaki
Mariko Seki
Eiichi Kuroda
Yukiko Chatani
Yamato Unno
Application Number:
Publication Date:
August 04, 2021
Filing Date:
September 08, 2017
Export Citation:
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Sumitomo Forestry Co., Ltd.
International Classes:
E04B1/94; E04C3/14; E04C3/36
Domestic Patent References:
Foreign References:
Attorney, Agent or Firm:
Showa International Patent Office

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