JP2002266564A - Fire door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire door which is lightweight, pleasant to the touch and excellent in fire resistant properties, and can easily undergo decorative working. SOLUTION: Surfaces of a frame body 5 and a panel board 6 of the door are covered with inorganic base plates 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire door for suppressing the spread of fire in the event of a fire in a building, and more particularly, to a fire door for indoor use which secures a lightweight and three-dimensional design while maintaining sufficient flame retardancy. About.

[0002]

2. Description of the Related Art Conventionally, prevention of fire spread has become an important issue in places such as hotels and apartment buildings where damage may be increased when a fire occurs. . For this reason, doors made of metal materials such as iron and aluminum, and doors in which ceramic-based plates such as slag cement plates and calcium silicate plates are attached to both sides of an appropriate core material have been proposed as fire-resistant doors. I have.

According to the former door, however, the door itself does not burn up, but the door becomes heavier, the hand feels cold, unpleasant metal noise is generated when opening and closing, and the decorative processing is limited. It tended to be shunned from other aspects, and was not suitable as an indoor door.

On the other hand, even the latter door to which a ceramic plate is attached is relatively heavy, has a high thermal conductivity even if not as much as metal, and feels cold when touched. Furthermore, there is a problem that cutting processing is difficult for ceramic-based plate materials, and in particular, it is difficult to perform decorative processing such as giving the surface three-dimensionality.

[0005] In view of the above problems, an object of the present invention is to provide a fire door which is lightweight, has a good touch, is easy to decorate, and has excellent fire resistance.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a fireproof door according to the present invention is a door in which an end plate is mounted in a frame formed by extending an upper frame and a lower frame over a pair of vertical frames. A specific gravity having a three-layer structure formed by laminating and integrating a core layer containing an inorganic foam and a binder as essential components between a front and back layer containing mineral fibers, an inorganic powder and a binder as essential components. The structure is such that at least a part of the surface of the door is covered with an inorganic substrate of 0.6 to 0.9.

Therefore, according to the fire door of the present invention,
It does not have the cold touch of a metal door and does not emit unpleasant metal sounds. In addition, the inorganic substrate has a specific gravity of 0.6 to 0.9, which is light, and is lighter than ceramic materials such as slag cement plates as well as metals. Work becomes easier. Furthermore, since the inorganic substrate is formed of a relatively soft front and back layer containing mineral fibers, inorganic powder, and a binder as essential components, it is easy to decorate and has excellent decorativeness. Is obtained.

[0008] In a door in which a front plate is attached to the front and back surfaces of a frame formed by bridging an upper frame and a lower frame on a pair of vertical frames, mineral fibers, inorganic powder and a binder are contained as essential components. An inorganic substrate having a specific gravity of 0.6 to 0.9 having a three-layer structure formed by laminating and integrating a core layer containing an inorganic foam and a binder as essential components between the front and back layers, May be covered at least partially.

For this reason, a fire door having a so-called flash door structure can be obtained, and in addition to the above-described effects, an even lighter fire door can be obtained.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the accompanying drawings of FIGS. As shown in FIGS. 1 and 2, the fire door according to the first embodiment includes a head plate 6 in a frame body 5 in which an upper frame 3 and a lower frame 4 are mounted on a pair of vertical frames 1 and 2, respectively. Is attached. The surface of the fire door may be provided with a makeup such as painting, applying a decorative paper, attaching a synthetic resin sheet, or the like, if necessary.

The vertical frames 1, 2, upper frame 3 and lower frame 4 are
It is made of a frame member 10 having the same internal structure, and is assembled by performing a cutting process on these members. That is, as shown in FIG. 2, the frame member 10 is made of a pair of wooden members 1 facing each other.
Filler 13 is filled between 1 and 12, and
An inorganic substrate 20 is disposed at an interface between the wood materials 11 and 12. Further, the inorganic substrate 20 is laminated and integrated on the front and back surfaces, both side surfaces, and the front edge of the frame member 10. Therefore, the entire exposed surface of the frame member 10 is covered with the inorganic substrate 20. On the other hand, the end plate 6 is obtained by attaching and integrating the inorganic substrate 20 to the front and back surfaces of the wooden core plate 7.

The wooden boards 11 and 12 preferably have high bending strength and high wood screw holding strength.
In addition to solid wood, if necessary, a plurality of wooden veneers may be laminated and integrated. In the case of laminating, if the plywood is made by making the fiber directions of the wooden veneers orthogonal to each other, the bending strength in both long side and short side directions can be improved. Further, when the fiber direction is set to LVL aligned in the long side direction, a wood board resistant to bending can be obtained, and a beautiful surface can be obtained when cutting is performed in the long side direction. In addition, it is preferable to select the type of wood board from a low specific gravity material such as cedar, sawara, cedar, falcata, area, and poplar, because the weight of the entire door can be reduced. Other wood materials include, for example, particle board, oriented strand board (O
SB), fiberboard, medium specific gravity fiberboard (MDF) and the like.

As the filler 13, a honeycomb board may be used to improve the surface strength, and a mineral fiber, phenol foam, or the like may be used to improve the heat insulation and sound insulation. Good.

As the inorganic substrate 20, for example, as shown in FIG. 5, there is a substrate having a three-layer structure in which a core layer portion 23 is integrally laminated between front and back layer portions 21 and 22. Dyelite manufactured by Co., Ltd. is exemplified.

The front and back layer portions 21 and 22 are for developing strength, and are mainly composed of mineral fibers, inorganic powder and a binder. As the mineral fiber, rock wool, slag wool, glass wool, or the like can be used, and the added amount thereof is preferably 20 to 80% by weight. If it is less than 20% by weight, the flexural strength will be low. If it exceeds 80% by weight, the proportion of the inorganic powder or binder will be relatively low, and the surface hardness and strength will be low. .

The inorganic powder is used to enhance the surface hardness and smoothness.
Examples thereof include calcium carbonate, silica sand, slag, and microsilica, and the added amount is 10 to 65% by weight. If the content is less than 10% by weight, desired surface hardness and smoothness cannot be obtained. If the content is more than 65% by weight, the proportion of the mineral fibers and the binder becomes relatively low, so that the desired strength is not obtained. Because it cannot be obtained.

The binder is for binding and integrating the mineral fiber and the inorganic powder. For example, starch,
Polyvinyl alcohol and isocyanate (MDI) can be used. In order to increase the water resistance, a phenol resin, an acrylic resin, or the like can be used. The amount of the resin added is preferably 5 to 30% by weight. If the amount is less than 5% by weight, the desired strength cannot be obtained. If the amount exceeds 30% by weight, the fire resistance cannot be satisfied. In addition, cement, cement,
Inorganic binders such as gypsum and water glass can also be used.

Further, in order to increase the strength, organic fibers such as pulp and polypropylene may be added in an amount of 2 to 15% by weight.

The core layer 23 is for reducing the weight of the decorative board, and is mainly composed of an inorganic foam and a binder. Examples of the inorganic foam include pearlite, shirasu foam, glass foam and the like, and the added amount is 40 to 80% by weight. If the content is less than 40% by weight, sufficient weight reduction cannot be performed.
If it exceeds 80% by weight, the ratio of the binder and the fiber decreases,
This is because the strength cannot be improved.

The binder binds and integrates the inorganic foam, and the same binder as that for the front and back layers can be used. The amount of the binder is preferably 5 to 30% by weight. If the amount is less than 5% by weight, the desired strength cannot be obtained, and if it exceeds 30% by weight, the fire resistance cannot be satisfied.

Further, 4-30% by weight of organic fibers such as pulp and polypropylene may be added to increase the strength. If necessary, an inorganic powder such as aluminum hydroxide, calcium carbonate, silica sand or the like may be added. However, in order to maintain weight reduction, the content needs to be 50% by weight or less.

The specific gravity of the front and back layer portions 21 and 22 is 0.8 to 1.0.
2, the specific gravity of the core layer 23 is 0.2 to 0.7, and the total specific gravity is 0.2.
Those of 4-0.9 are suitable. If the specific gravity of the front and back layer portions 21 and 22 is less than 0.8, the desired strength cannot be obtained. If the specific gravity exceeds 1.2, the front and back layer portions 21 and 22 become hard and workability deteriorates. Because. Also, the core layer portion 23
If the specific gravity is less than 0.2, the strength of the core layer portion 23 cannot be maintained, and if it exceeds 0.7, sufficient weight reduction cannot be achieved.

The method for producing the inorganic substrate is not particularly limited, and may be any of the existing wet and dry methods and any combination of these methods. For example, mineral fibers, binders,
An inorganic powder, organic fibers, and the like are put into water and stirred to obtain a slurry, and the slurry is formed to obtain a wet mat to be the front and back layers. On the other hand, an inorganic foam, a binder, an inorganic powder, an organic fiber and the like are mixed under water spray to obtain a mixture.
Then, after the mixture is sprayed and deposited on the wet mat to be the surface layer, the wet mat to be the back layer is overlaid. Then, after heating and pressing with a hot press, and drying with a drier, the specific gravity of the front and back layer portions is 0.8 to 1.2, and the specific gravity of the core layer portion is 0.2 to 0.
7. An inorganic substrate having an overall specific gravity of 0.6 to 0.9 is obtained.

The end plate 6 is fitted and assembled in an annular groove 8 formed on the opposed inner side surface of the frame 5.
A frame 14 made of MDF is attached to the attachment base. This is to prevent peeling when a decorative sheet or the like is stuck.

According to this embodiment, the wooden materials 11, 12,
Since the entire periphery of the filler 13 is partitioned by the inorganic substrate 20, there is an advantage that heat is hardly transmitted at the time of a fire, and the spread of fire can be prevented.

The second embodiment is a case where the present invention is applied to a fire door having a flash structure, as shown in FIGS.
That is, the upper frame 3 and the lower frame (not shown) are bridged over a pair of vertical frames 1 (the vertical frame located at the back side in FIG. 3 is not shown), and a plurality of horizontal rails 9 are bridged. The formed frame 5 is filled with a filler 13 and the front and back surfaces
Reference numeral 5 denotes a fire door to which an inorganic substrate 20 is attached.
The vertical frame 1, the upper frame 3 and the lower frame have an inorganic substrate 20 attached to both opposing side surfaces of the wooden material 11. Further, the horizontal rail 9 is provided on the upper and lower surfaces of the inorganic substrate 20 with LVLs 17 and 1.
7 is affixed. A fitting groove 9a is formed on each of the front and back surfaces of the inorganic substrate 20 of the horizontal rail 9, and a decorative edge 16 made of MDF is fitted and integrated.

Therefore, except for the decorative edge 16, the second
The entire surface of the fire door of the embodiment is covered with a surface plate 15 made of an inorganic substrate 20 and is made of a wood material 11.
The inorganic substrate 20 is also arranged between the fillers 13. For this reason, the conduction of heat at the time of fire can be prevented, and the spread of fire can be prevented. In particular, even if the decorative edge 16 spreads, all parts in contact with the decorative edge 16 are made of the inorganic substrate 2.
Since it is composed of 0, there is an advantage that it is difficult to spread the fire. Since the inorganic substrate 20 is the same as that of the first embodiment, the description is omitted.

[0028]

According to the present invention, since the entire door is covered with the inorganic substrate, heat is less likely to be transmitted, and the spread of fire can be effectively prevented.

In particular, if the entire periphery of the wood material and filler inside the door is partitioned by the inorganic substrate, even if the inorganic substrate on the surface is burned down and spreads to the wood material and filler inside, the door is not damaged. Other inorganic substrates placed inside prevent fire spread,
This has the effect of stopping the spread of fire.

Further, the inorganic substrate has a specific gravity of 0.1.
Since it is as light as 6 to 0.9, the fire door according to the present invention is lighter than a metal door or a door using a calcium silicate plate, and can be easily transported and mounted.

Furthermore, since the front and back layers are formed of a relatively soft inorganic substrate containing mineral fibers, inorganic powder, and a binder as essential components, there is an effect that the decorative processing is facilitated.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of a fire door according to the present invention.

FIG. 2 is a sectional view taken along line II-II of the fire door shown in FIG.

FIG. 3 is a front view showing a second embodiment of the fire door according to the present invention.

FIG. 4 is a partial sectional view of the fire door shown in FIG. 3;

FIG. 5 is a partial cross-sectional view of an inorganic substrate used in the embodiment.

[Explanation of symbols]

1, 2, vertical frame, 3 upper frame, 4 lower frame, 5 frame, 6 mirror plate, 11, 12 wooden material, 13 filler, 15 surface plate, 20 inorganic substrate, 21 22 ... front and back layers, 23 ...
Core layer part.

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) 2E016 HA02 LA01 LB00 MA01 MA11 2E039 BA01

Claims (2)

[Claims] 1. A door in which a head plate is mounted in a frame formed by bridging an upper frame and a lower frame over a pair of vertical frames, wherein a front and back layer containing mineral fibers, inorganic powder and a binder as essential components is provided. An inorganic substrate having a specific gravity of 0.6 to 0.9 having a three-layer structure formed by laminating and integrating a core layer containing an inorganic foam and a binder as essential components, at least a part of the surface of the door. A fire door characterized by being coated. 2. A door having a front plate attached to the front and back surfaces of a frame formed by bridging an upper frame and a lower frame on a pair of vertical frames, comprising mineral fibers, inorganic powder and a binder as essential components. An inorganic substrate having a specific gravity of 0.6 to 0.9 having a three-layer structure formed by laminating and integrating a core layer containing an inorganic foam and a binder as essential components between the front and back layers, A fire door, wherein at least a part of the fire door is covered.