Title:
A manufacturing method of a fire prevention door device
Document Type and Number:
Japanese Patent JP6172861
Kind Code:
B2
Abstract:
PURPOSE: To provide a wooden fireproof door device referred to as a so-called 60 min fireproof door device which causes no secular change or no sudden decrease in fireproof performance, enables an improvement in fireproof performance itself, and enables a long fire-resistant time for 60 min or more with a very high fireproof performance and a light weight.CONSTITUTION: A first laminate lumber of paulownia produced by laminate bonding of veneers in parallel with a fiber direction is disposed so that the fiber direction may become vertical. A second laminate lumber is disposed so that the fiber direction may become horizontal and bonded on the back face of the first laminate lumber via a heat insulation sheet to be formed thicker than the second laminate lumber. A nonflammable sheet is bonded to the front face to mass-produce a core material unit, and a pair of second laminate lumbers are so disposed and bonded as to face each other to form the core material of a fireproof door. An outer peripheral end face is fitted with a large-sized material configured of a combustion delay member to form a fireproof door, and the fireproof door is fitted into a frame assembled in a rectangular form.SELECTED DRAWING: Figure 1
Inventors:
Yasuhito Matsumaru
Application Number:
JP2014166774A
Publication Date:
August 02, 2017
Filing Date:
August 19, 2014
Export Citation:
Assignee:
Yasuhito Matsumaru
International Classes:
B27M3/00; B27D1/04; E06B3/74; E06B5/16
Domestic Patent References:
| JP2008180019A | ||||
| JP200941199A | ||||
| JP2004232449A | ||||
| JP2010106553A |
Attorney, Agent or Firm:
Giichiro Ito
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