JP2004108081A - Wooden fire door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wooden fire door which exerts sufficient fire protective performance and is produced at a relatively low cost. <P>SOLUTION: The wooden fire door is formed of a core member 20 consisting of paulownia members 21 to 23 as main bodies, and decorative plywood portions 40 arranged on surfaces. The wooden fire door is comprised of a fire resistive paint layer 30 which is formed between the core member 20 and each decorative plywood portion 40, and a slipout preventive structure 51 for preventing the fire resistive paint layer 30 from slipping out of the core member 20. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a wooden fire door using a paulownia material and an organic material.
[0002]
[Prior art]
Conventionally, only the steel made as the specific fire prevention equipment 60 was accepted, so that the fire door is generally made of steel. Steel fire doors are sturdy, but have the drawbacks of being heavy, warping due to high heat, and having high radiant heat (5 to 8 times wood).
[0003]
Therefore, the test method for Class A fire doors and Class B fire doors was revised in 1990, and if certain conditions were met, even wooden doors were approved as the specified fire protection equipment 60 or the specified fire protection equipment 20. Wooden fire doors using paulownia wood have been developed as an opportunity.
[0004]
Then, a paulownia laminate laminated with a paulownia laminated material (see Patent Document 1), a paulownia laminated material and a thermosetting resin laminate laminated (see Patent Document 2), a paulownia material and noncombustible paper (See Patent Literature 3), a combination of paulownia wood and phenol foam (see Patent Literature 4), a combination of paulownia glued laminated wood with a refractory sheet (see Patent Literature 5), paulownia wood and volcano A combination with a functional glass fiber plate (see Patent Document 6) and the like have been developed. In addition, a structure that prevents the paulownia wood from warping (see Patent Document 7), a structure that facilitates escape from a disaster (see Patent Document 8), and the like have been developed.
[0005]
[Patent Document 1]
JP-A-7-208033 (Claims, FIG. 2)
[Patent Document 2]
JP-A-7-259445 (claims, FIG. 2)
[Patent Document 3]
JP-A-7-293127 (Claims, FIG. 1)
[Patent Document 4]
JP-A-7-324561 (Claims, FIG. 1)
[Patent Document 5]
JP 9-256746 A (Claims, FIG. 2)
[Patent Document 6]
Japanese Patent Application Laid-Open No. 2000-179245 (Claims, FIG. 2)
[Patent Document 7]
Japanese Patent Application Laid-Open No. 2000-31090 (Claims, FIG. 1)
[Patent Document 8]
JP 2001-17560 A (Claims, FIG. 1)
[0006]
[Problems to be solved by the invention]
However, conventional wooden fire doors have a problem in terms of balance between fire resistance and the production cost in the event of a fire, and a sufficiently satisfactory product has not been obtained.
[0007]
In view of such circumstances, an object of the present invention is to provide a wooden fire door that exhibits sufficient fire protection performance and can be manufactured at a relatively low cost.
[0008]
[Means for Solving the Problems]
A first aspect of the present invention that solves the above-mentioned problem is that in a wooden fire door having a core material mainly composed of paulownia wood and a decorative plywood provided on the surface, a space between the core material and the decorative plywood is provided. Is a wooden fire door provided with a fire-resistant paint layer and a structure for preventing the fire-resistant paint layer from falling off from the core material.
[0009]
According to a second aspect of the present invention, in the first aspect, the fall-off preventing structure is such that a fall-off prevention groove is formed on a surface of the core material, and a part of the refractory paint layer is embedded in the fall-off prevention groove. A wooden fire door characterized by having a structure provided in a wooden fire door.
[0010]
A third aspect of the present invention is the wooden fire door according to the second aspect, wherein the fall-off preventing grooves are provided in a lattice shape on the surface of the core material.
[0011]
In a fourth aspect of the present invention, in the first aspect, the falling-off prevention structure has a structure in which a fire-resistant net is provided on a surface of the core material, and the fire-resistant paint layer is provided so as to cover the fire-resistant net. There is a wooden fire door characterized by the following.
[0012]
A fifth aspect of the present invention is the wooden fire door according to the fourth aspect, wherein the refractory net is fixed to the core by a stopper.
[0013]
According to a sixth aspect of the present invention, in the first aspect, the fall-off prevention structure is a structure in which a fall-off prevention plywood is provided between the fire-resistant paint layer and the decorative plywood, and the fall-off prevention plywood is fixed to the core material. A wooden fire door characterized by the following.
[0014]
A seventh aspect of the present invention is the wooden fire door according to the sixth aspect, wherein the falling-off prevention plywood is fixed to the core material via a stopper through the fire-resistant paint layer. is there.
[0015]
An eighth aspect of the present invention is the wooden fire door according to any one of the first to seventh aspects, wherein a graphite-based foam material is provided in the vicinity of an end face of the door in a longitudinal direction thereof. .
[0016]
A ninth aspect of the present invention is the wooden fire door according to any one of the first to eighth aspects, wherein the core is a laminated board of paulownia laminated wood.
[0017]
According to the present invention, when a fire occurs, the refractory paint traps fire and heat, so that the refractory paint does not directly affect the core material, and the refractory paint is held by the fall prevention structure, so that it easily peels off. There is no.
[0018]
Further, the structure in which the grooves are provided in a lattice shape on the surface of the core material has an effect that the core material is less likely to be warped.
[0019]
Here, the core material is not fundamentally limited as long as it uses a paulownia material, but it is preferable to use a material of a quality that is unlikely to warp as the paulownia material. The core material may be any of a paulownia wood cut out of a natural paulownia or a paulownia laminated wood, and may be a single piece or a laminated material.
[0020]
In general, it is preferable to use a laminated material of paulownia laminated wood, and it is particularly preferable to use a laminated material having a three-layer structure in which the wood grain (fiber direction) is crossed so as to be substantially orthogonal.
[0021]
Moreover, since the paulownia wood is likely to be warped by heat, it is necessary to cover four sides in the plane direction, that is, the four sides of the door, with a reinforcing member made of wood that is harder and harder to warp than the paulownia wood. As the reinforcing member, artificial plywood, L.P. V. L and the like. In the present invention, such a reinforcing member is referred to as a core material.
[0022]
On the other hand, the fire-resistant paint is not particularly limited as long as it forms a coating film on wood and is nonflammable / flame-retardant, which is also called fireproof paint. Preferably, after forming the carbonized layer, the temperature rise of the core material is suppressed within 500 ° C., preferably within 450 ° C. Such refractory paints are available, for example, as HCA TR, HCA ML, etc. from Frame Guard Japan, JERICO FP, etc. from Japan Institute of Environmental Research, and SK Tycacoat, etc. from SK Chemicals, Inc. It is marketed as FRP by an industrial company.
[0023]
Such a fireproof paint has never been used for a wooden fire door in the past, but this time, the use of this fireproof paint makes it easier and more efficient to use a wooden fire door than a conventional fire resistant plate or sheet. Can be provided. However, even if the fire-resistant paint is applied to the core material as it is, the core material will be peeled off. For example, it cannot pass the 60-minute fire resistance test of the specific fire prevention equipment. Fire performance can be obtained.
[0024]
Here, the falling-off prevention structure of the present invention is a falling-off prevention groove provided on the surface of the core material. The falling-off prevention grooves are grooves provided on the surface of the core material, for example, in a lattice shape. There is no particular limitation on the falling-off preventing groove as long as the fire-resistant paint is embedded when the fire-resistant paint is applied to the surface of the core material and can be prevented from peeling off in the event of a fire. For example, the cross section is a groove having a V shape, a semicircle, a rectangle, or the like, and the width and the depth are about 1 to 5 mm, preferably about 2 to 4 mm. The pitch of the grooves is 2 to 50 cm, preferably 5 to 30 cm.
[0025]
Another example of the falling-off prevention structure is a refractory net provided on the surface of the core material. The refractory net is, for example, formed by forming refractory fibers such as glass fiber and ceramic fiber in a mesh shape. When such a fire-resistant net is fixed to the surface of the core material, the surface of the core material becomes uneven, and the fire-resistant paint layer hardly peels off. The refractory net may be fixed to the surface of the core material with a stopper such as a tucker needle.
[0026]
Another example of the falling-off prevention structure is that after providing a fire-resistant paint layer on the surface of the core material, the falling-off prevention plywood is beaten to the core material with a fastener such as a nail or a tucker needle, and the core material and the falling-off prevention plywood are combined. The fire-resistant paint layer is sandwiched. In this case, it is preferable to use an adhesive and fix the core material with a nail or a tucker. By doing so, the refractory paint layer is held by the plywood for preventing falling off, and does not easily fall off.
[0027]
A decorative plywood is provided on the outermost surface of the wooden fire door of the present invention. The material used for the decorative plywood is not particularly limited as long as it is formed of natural wood, and of course, a laminated material, a laminated material, or the like formed using natural wood may be used. The decorative plywood may be bonded to the surface of the fire-resistant paint layer or the surface of the plywood for preventing falling off via a fire-resistant adhesive or the like.
[0028]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described based on an embodiment.
[0029]
(Embodiment 1)
FIG. 1 is a schematic perspective view of a wooden fire door according to an embodiment of the present invention. FIGS. 2A and 2B are cross-sectional views of a wooden fire door according to an embodiment of the present invention. FIG. 2A is a vertical cross-sectional view, and FIG.
[0030]
As shown in FIGS. 1 and 2, the wooden fire door 10 of the present embodiment has a core material including a paulownia laminated plate 24 in which a plurality of paulownia members 21 to 23 are laminated, and reinforcing members 25 provided on four sides thereof. 20, a fireproof paint layer 30 provided on the surface of the core material 20, and a decorative plywood 40 bonded to the surface of the fireproof paint layer 30.
[0031]
The paulownia laminate board 24 sandwiches the paulownia member 23, which is a direction orthogonal to the grain direction of the paulownia members 21, 22, between the paulownia members 21, 22 whose grain direction (fiber direction) matches the longitudinal direction. It has a three-layer structure. The paulownia members 21 to 23 constituting the paulownia laminated board 24 may be formed in a predetermined size, respectively, or may be formed by joining a plurality of short dimensions. . The paulownia laminated board 24 formed by cross-stretching the paulownia members 21 to 23 so that the grain directions of the paulownia members 21 to 23 are substantially orthogonal to each other can effectively prevent warpage.
[0032]
Further, reinforcing members 25 made of wood harder than paulownia material, in this embodiment, synthetic plywood are provided on the upper, lower, left and right end surfaces of the paulownia laminated board 24. As described above, since the core member 20 is formed by surrounding the four sides of the paulownia laminated plate 24 with the reinforcing member 25, warpage can be more reliably prevented. The thickness of the reinforcing member 25 (dimension in the surface direction of the door) varies depending on the fire protection performance of the wooden fire door, but a thickness of about 150 mm is required to satisfy the 60-minute fire test.
[0033]
In the present embodiment, on the surface of the core member 20, that is, on the surfaces of the paulownia members 21, 22 and the reinforcing member 25, drop-off prevention grooves 51 extending in the vertical and horizontal directions, respectively, are provided in a grid at predetermined intervals. I have. Here, since the above-mentioned fire-resistant paint layer 30 is provided so as to be embedded in the fall-off prevention groove 51, peeling-off is prevented. In the present embodiment, these drop-prevention grooves 51 are rectangular having a cross section of 4 mm in width and 2 mm in depth, and are provided at a pitch of about 50 cm.
[0034]
Here, the fire-resistant paint layer 30 was formed to a thickness of about 1 to 2 mm using, for example, a fire-resistant paint manufactured by Tsuneka Chemical Industry Co., Ltd., manufactured by SK Kaken Corporation.
[0035]
Further, a foam material 35 is provided on the surface of the reinforcing member 25 on the door end surface side so as to be embedded in the longitudinal direction, and a large surface is provided on the door end surface of the reinforcing member 25 so as to cover the foam material 35. A decorative material 45 which is a material or a side material is provided.
[0036]
Here, as the foaming material 35, for example, a graphite-based foaming material that expands about 10 times in the thickness direction at about 230 ° C. may be used, whereby the gap with the frontage can be completely closed, and smoke The flow can be prevented and the spread of fire can be prevented. In this embodiment, the foam material 35 is provided on four sides of the fire door, but may be provided on at least three end faces. Further, the cosmetic material 45 can be omitted as necessary depending on the location.
[0037]
The decorative plywood 40 is bonded to the surface of the fire-resistant paint layer 30. In the present embodiment, a decorative plywood having a thickness of 4 mm was used. Note that an adhesive layer 37 formed by applying a fire-resistant adhesive or the like is provided between the fire-resistant paint layer 30 and the decorative plywood 40.
[0038]
As described above, the wooden fire door 10 of the present embodiment is provided so that the refractory paint layer 30 is embedded in the fall prevention groove 51 provided on the surface of the core material 20 on both surfaces of the core material 20. In the event of a fire, the fireproof paint layer 30 traps fire and heat so that the core 20 is not heated to a predetermined temperature or higher, so that excellent fire protection performance is exhibited.
[0039]
(Embodiment 2)
FIG. 3 is a schematic perspective view of a wooden fire door according to one embodiment of the present invention. 4 is a cross-sectional view of a wooden fire door according to an embodiment of the present invention, in which (a) is a longitudinal sectional view and (b) is a transverse sectional view.
[0040]
As shown in FIGS. 3 and 4, the wooden fire door 10 </ b> A of the present embodiment has a fireproof net 52 fixed to the surface of the core material 20 with a tucker 53 as a fall-prevention structure, and a fireproof paint layer 30 provided thereon. Things. Since the fire-resistant paint layer 30 provided in this manner is formed so that the fire-resistant net 52 is embedded, it is difficult for the fire-resistant paint layer 30 to peel off when a fire occurs. Although the tucker 53 is substantially U-shaped, it may be fixed by a stopper that can fix the refractory net 52 to the core 20. In this embodiment, as the refractory net 52, a super crack non-net (5 mm opening) using an ARG fiber manufactured by NEC Corporation is used.
[0041]
(Embodiment 3)
FIG. 5 is a schematic perspective view of a wooden fire door according to one embodiment of the present invention. FIGS. 6A and 6B are cross-sectional views of a wooden fire door according to an embodiment of the present invention, wherein FIG. 6A is a vertical cross-sectional view and FIG. 6B is a horizontal cross-sectional view.
[0042]
As shown in FIGS. 5 and 6, the wooden fire door 10B of the present embodiment is provided with a fall prevention plywood 54 on the fireproof paint layer 30 provided on the surface of the core 20 as a fall prevention structure. Is fastened by the tucker 55. Since the fire-resistant paint layer 30 provided in this manner is pressed and fixed by the fall-off prevention plywood 54, it is difficult for the fire-resistant paint layer 30 to peel off when a fire occurs. Although the tucker 55 is used in the present embodiment, it is needless to say that the stopper is not particularly limited as long as the stopper can fix the falling-off prevention plywood 54 to the core member 20. Further, the fall-off prevention plywood 54 is not particularly limited as long as the fire-resistant paint layer 30 can be prevented from falling off.
[0043]
【The invention's effect】
As described above, according to the present invention, by using a fire-resistant paint that has not been applied to a wooden fire door in the past and adopting a structure for preventing falling off of a core material, sufficient fire protection performance is exhibited and warpage is exhibited. There is an effect that a wooden fire door that does not generate can be realized at low cost.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of a wooden fire door according to Embodiment 1 of the present invention.
FIGS. 2A and 2B are cross-sectional views of a wooden fire door according to Embodiment 1 of the present invention, wherein FIG. 2A is a vertical cross-sectional view and FIG.
FIG. 3 is a schematic perspective view of a wooden fire door according to Embodiment 2 of the present invention.
FIG. 4 is a cross-sectional view of a wooden fire door according to Embodiment 2 of the present invention, where (a) is a longitudinal sectional view and (b) is a transverse sectional view.
FIG. 5 is a schematic perspective view of a wooden fire door according to Embodiment 3 of the present invention.
FIG. 6 is a sectional view of a wooden fire door according to Embodiment 3 of the present invention, wherein (a) is a longitudinal sectional view and (b) is a transverse sectional view.
[Explanation of symbols]
10, 10A, 10B Wooden fire door 20 Core material 21, 22, 23 Paulownia member 24 Paulownia laminated board 25 Reinforcement member 30 Fireproof paint layer 35 Foaming material 37 Adhesive layer 40 Decorative plywood 45 Decorative material 51 Fall prevention groove 52 Fireproof net 53 , 55 Tucker 54 Captive plywood

Claims (9)

In a wooden fire door having a core material mainly composed of paulownia wood and a decorative plywood provided on the surface, a fireproof paint layer is provided between the core material and the decorative plywood, and the fireproof paint layer is A wooden fire door having a structure for preventing the core from falling off. 2. The drop-off prevention structure according to claim 1, wherein the drop-out prevention groove is formed on a surface of the core material, and a part of the fireproof paint layer is provided so as to be embedded in the drop-out prevention groove. Characterized wooden fire door. 3. The wooden fire door according to claim 2, wherein the fall-off preventing grooves are provided in a grid on the surface of the core material. 2. The wooden fire door according to claim 1, wherein the fall-off prevention structure has a structure in which a fire-resistant net is provided on a surface of the core material, and the fire-resistant paint layer is provided so as to cover the fire-proof net. The wooden fire door according to claim 4, wherein the refractory net is fixed to the core material by a stopper. 2. The wooden fire door according to claim 1, wherein the fall-off prevention structure has a structure in which a fall-off prevention plywood is provided between the fire-resistant paint layer and the decorative plywood, and the fall-off prevention plywood is fixed to the core material. . 7. The wooden fire door according to claim 6, wherein the falling-off prevention plywood is fixed to the core member via a stop through the fire-resistant paint layer. The wooden fire door according to any one of claims 1 to 7, wherein a graphite-based foam material is provided in the vicinity of an end surface of the door along a longitudinal direction thereof. The wooden fire door according to any one of claims 1 to 8, wherein the core is a laminated board of paulownia laminated wood.

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