JP2003074260A - Wooden fire door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wooden fire door showing full fire resistance while resisting warping. SOLUTION: The wooden fire door 10 has a core 20 composed chiefly of paulownia timbers 21 to 23, and has a coated plywood board 40 provided on the surface of the door. A plurality of vertically extending grooves 25 being open at least to the upper end face of the core are provided on the surface of the core 20 along width direction, and a volcanic glass fiber board 30 is provided between the core 20 and the plywood board 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wood fire door using paulownia wood.

[0002]

2. Description of the Related Art Conventionally, only steel products have been recognized as class A fire doors, so fire doors are generally made of steel. Steel fire doors are sturdy but heavy,
It has the drawback of melting at high heat.

Therefore, in 1990, the test method for Class A fire doors and Class B fire doors was revised, and even wooden doors were approved as Class A fire doors if certain conditions were met. Wood fire doors made of wood have been developed.

[0004]

However, since the conventional wooden fire doors are mainly made of natural wood such as paulownia wood, sufficient fire protection performance is not obtained when a fire occurs. There is a problem.

Further, it is well known that paulownia wood is less likely to warp as compared to other woods in applications represented by paulownia dance, but when it is used as a core material for a door, the degree of dryness in the production area,
In addition, there is a problem that a complicated warp occurs depending on the temperature and humidity of the place of use.

In view of such circumstances, it is an object of the present invention to provide a wooden fire door that exhibits sufficient fireproof performance and does not warp.

[0007]

A first aspect of the present invention for solving the above-mentioned problems is a wooden fire door having a core material mainly composed of paulownia wood and a decorative plywood provided on the surface thereof. A plurality of grooves extending in the vertical direction and opening at least on the upper end surface are provided on the surface of the material in the width direction, and a volcanic glass fiber board is provided between the core material and the decorative plywood. Located in the characteristic wooden fire door.

A second aspect of the present invention is the wooden fire door according to the first aspect, characterized in that the core material is a laminated plate in which a plurality of paulownia members are laminated.

[0009] A third aspect of the present invention is the wooden fire door according to the first or second aspect, characterized in that the core material has a reinforcing member at an end thereof.

In a fourth aspect of the present invention, in any one of the first to third aspects, the core material, the decorative plywood, and the volcanic glass fiber board are bonded by a fire-resistant adhesive. It is a wooden fire door characterized by being joined through an agent layer.

In the wooden fire door of the present invention, since the volcanic glass fiber board is bonded to the surface of the core material, the volcanic glass fiber board traps fire and heat when a fire occurs,
Does not directly affect the core material. Further, when the core material is heated to some extent, the water inside the core material tends to be radiated to the outside, but the water vapor generated at this time escapes upward through the grooves provided on the surface of the core material, As the wooden fire doors are prevented from being destroyed by the divergence of water vapor, they exhibit sufficient fire protection performance.

[0012] Also, in normal use, even if a temperature difference occurs on both sides of the wooden fire door and the moisture inside the core material moves from the warm surface side to the cold surface side, the volcanic glass provided on the surface of the core material. Since it is trapped by the fiberboard, it does not affect the decorative plywood and the core material does not warp.

Here, the core material is not particularly limited as long as it is made of paulownia wood, but it is preferable to use a material of quality that is difficult to warp as paulownia wood. . Further, the core material may be either a paulownia wood cut from natural paulownia or a laminated wood of paulownia wood, and may be a single piece or a laminated material.

In general, it is preferable to use a plurality of laminated paulownia lumbers for lamination, and it is particularly preferable to use a laminated material having a three-layer structure by crossing wood grains (fiber directions) substantially orthogonally. It is said that.

On the other hand, the volcanic glass fiber board is preferably an inorganic board in which mineral fibers and inorganic foam are laminated. The inorganic plate used for such a volcanic glass fiber plate is not particularly limited as long as it has sufficient fire resistance at the time of a fire, for example, rock wool, slag wool, mineral fibers such as glass wool and the like. For example, the inorganic plate is preferably a laminate of a plurality of inorganic foams such as pearlite, shirasu foam, and glass foam. The materials used for the mineral fiber and the inorganic foam may be appropriately selected according to the fireproof performance required for the wooden fire door.

Further, since the volcanic glass fiber board is directly related to the fireproof performance, it is necessary to maintain its shape in the event of a fire, and it is made of a material having a high ignition temperature. is necessary.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on an embodiment.

FIG. 1 is a schematic perspective view of a wooden fire door according to an embodiment of the present invention. Moreover, FIG. 2 is a cross-sectional view of a wooden fire door according to an embodiment of the present invention, in which (a) is a vertical cross-sectional view and (b) is a horizontal cross-sectional view.

As shown in FIGS. 1 and 2, the wooden fire door 10 of the present embodiment has a core material 20 in which a plurality of paulownia members 21 to 23 are laminated, and a volcanic glass bonded to the surface of the core material 20. The fiberboard 30 and the decorative plywood 40 bonded to the surface of the volcanic glass fiberboard 30 are provided.

The core member 20 is provided with the Paulownia member 2 between the Paulownia members 21 and 22 whose wood grain directions (fiber directions) match the longitudinal direction.
This is a three-layer structure in which the Paulownia member 23, which is the direction orthogonal to the grain direction of Nos. 1 and 22, is sandwiched and laminated. In addition, this core material 20
Each of the paulownia members 21 to 23 may be formed to have a predetermined size, or may be a plurality of pieces having a short size joined together.

As described above, the core material 2 is obtained by cross-tensioning so that the grain directions of the paulownia members 21 to 23 are substantially orthogonal to each other.
Since 0 is produced, it is possible to effectively prevent warpage.

Reinforcing members 24 made of wood harder than paulownia wood are provided on the upper, lower, left and right end surfaces of the core material 20.

Further, on the surface of the core material 20, that is, on the surfaces of the paulownia members 21 and 22, a plurality of grooves 25 extending in the vertical direction and opening at the upper end surface and the lower end surface are juxtaposed in the width direction. These grooves 25 are provided so as to extend to the surface of the reinforcing member 24 provided in the vertical direction of the core material 20. Further, these grooves 25 have a V-shaped cross section in which the width gradually decreases toward the inside of the core 20, and are provided by cutting a part of the paulownia members 21 and 22 in the thickness direction. In the present embodiment, these grooves 25 have a width of 1.0 mm to 1.5 mm.
The pitch is about 150 mm and about 150 to 200 mm.

On the other hand, the volcanic glass fiber board 30 bonded to both surfaces of the core material 20 has a structure in which mineral fibers 31 are bonded to both surfaces of an inorganic foam 32, as shown in FIG. The volcanic glass fiber board 30 has excellent fire resistance when a fire occurs. In this embodiment, the volcanic glass fiber board 30 has a thickness of 6.0 mm.
DAILIGHT (trade name of Daiken Industry Co., Ltd.) was used.

In this way, by providing the volcanic glass fiber board 30 having excellent fire resistance on both surfaces of the core material 20, in the event of a fire, the volcanic glass fiber board 30 is provided.
Since it traps fire and heat, it exhibits excellent fire protection performance. Further, in normal use, even if a temperature difference occurs on both sides of the wooden fire door 10 and the moisture inside the core material 20 moves from the warm surface side to the cold surface side, the volcanic glass provided on the surface of the core material 20. Since the fiberboard 30 is used for trapping, the decorative plywood 40 is not affected, and the warpage of the core material 20 can be effectively prevented.

The decorative plywood 40 is joined to the surface of the volcanic glass fiber board 30. Such a plywood 4
The material used for 0 is not particularly limited as long as it is made of natural wood. Of course, it may be a laminated material, a laminated material or the like formed by using natural wood. In this embodiment, a decorative plywood having a thickness of 4.0 mm was used.

Further, the volcanic glass fiber board 30 and the core material 2
0 and the decorative plywood 40 are provided with an adhesive layer 26 formed by applying a fire resistant adhesive or the like. The method of joining the volcanic glass fiber board 30, the core material 20, and the decorative plywood 40 is not particularly limited to this.
For example, they may be joined using a screw, a tucker needle, or the like.

Further, lateral members 50 are provided on the left and right end surfaces of the wooden fire door 10. This lateral member 50
Is for makeup and reinforcement of the end face, and the material and the like are not particularly limited. Although nothing is provided on the upper and lower end surfaces of the core material 20, a member for makeup may be provided depending on the case.

In this way, the wooden fire door 10 of this embodiment is used.
By providing the volcanic glass fiber board 30 on both surfaces of the core material 20, the volcanic glass fiber board 30 traps fire and heat when a fire occurs, and thus exhibits excellent fire protection performance.

In normal use, the volcanic glass fiber board 3 is used even if the temperature difference between the two sides of the wooden fire door 10 causes the moisture inside the core material 20 to move from the warm surface side to the cold surface side.
Since it is trapped by 0, the warp of the core material 20 can be effectively prevented without affecting the decorative plywood 40.

Further, as the core material 20, paulownia members 21 to 2
Since a three-layer structure in which three wood grain directions are crossed so as to be substantially orthogonal to each other is used, and a plurality of vertically extending grooves 25 are provided in the width direction on the surface of the core material 20, the core material 20 is When heated to some extent, the water inside the core material 20 is radiated to the outside and is discharged to the outside through the groove 25.
The destruction of the wooden fire door 10 is prevented, and sufficient fireproof performance is exhibited.

In the present embodiment, each of the grooves 25 provided on the surface of the core material 20 has an upper end surface and a lower surface of the core material 20 in order to effectively disperse the water inside the core material 20 to the outside. Although the opening is formed on both end surfaces, it is sufficient that the opening is formed on at least the upper end surface of the core material 20. Of course, the number, shape, width, depth of the grooves 25 provided on the surface of the core material 20,
The pitch and the like are not particularly limited as long as the moisture inside the core material 20 can be surely diffused to the outside when a fire occurs.

[0033]

As described above, according to the present invention,
It is possible to realize a wooden fire door that exhibits sufficient fireproof performance and does not warp.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a wooden fire door according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a wooden fire door according to an embodiment of the present invention, in which (a) is a vertical cross-sectional view and (b) is a horizontal cross-sectional view.

FIG. 3 is a schematic perspective view of a volcanic glass fiber board according to an embodiment of the present invention.

[Explanation of symbols]

10 wooden fire doors 20 core material 21, 22, 23 Paulownia material 24 Reinforcement member 25 grooves 26 Adhesive layer 30 volcanic glass fiberboard 40 makeup plywood 50 Lateral member

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoichiro Kuroiwa             2-3-1 Kudankita Stock Exchange, Chiyoda-ku, Tokyo             Kuroiwa Building Materials Research Institute F-term (reference) 2E039 BA01

Claims (4)

[Claims] 1. A wood fire door having a core material mainly made of paulownia wood and a decorative plywood provided on the surface thereof, wherein a surface of the core material is provided with a groove extending in the vertical direction and opening at least on an upper end surface. A plurality of fireproof doors are provided in the width direction, and a volcanic glass fiber board is provided between the core material and the decorative plywood. 2. The wooden fire door according to claim 1, wherein the core material is a laminated board in which a plurality of Paulownia members are laminated. 3. The core material according to claim 1 or 2,
A wooden fire door characterized by having a reinforcing member at the end. 4. The core material, the decorative plywood and the volcanic glass fiber board according to claim 1, wherein the core material and the decorative plywood are bonded via an adhesive layer made of a fire-resistant adhesive. A wooden fire door that is characterized.