JPH0913809A - Backup material for fire preventive glass door - Google Patents

Abstract

PURPOSE: To provide backup material for a fire preventive glass door preventing a worker from feeling itchy at the time of gripping the backup material to load it in the inner peripheral groove of a sash and also preventing ceramic fiber, main material, from being broken into small pieces to fall at the time of carrying the backup material or loading it into the inner peripheral groove so as to be excellent in workability. CONSTITUTION: Organic fiber yarn made of staple fiber of 200 tex with the twist frequency per 10cm in length being about three times is wound around ceramic fiber yarn 10 of 600 tex with glass fiber yarn 9 of 68 tex put inside as core, to form covering yarn 12. At the time of winding, the covering yarn 12 is spread flatly in cross section, and the adjacent yarn is brought into contact or partially overlapped, so that no clearance is generated. Ten pieces of covering yarn 12 are twisted to form rope-like backup material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a back-up material to be inserted into an inner peripheral groove of a sash of a fireproof glass door.

[0002]

2. Description of the Related Art As shown in FIG. 6, a general aluminum sash glass door 41 is provided with an inner peripheral groove 43 of a sash 42. As shown in FIG.
After a backup material 44 made of foamed polyethylene resin is loaded into the inner peripheral groove 43, a glass 45 is fitted into the inner peripheral groove 43, and the sealing material 4 is provided between the glass 45 and the opening of the inner peripheral groove 43.
6 are formed. Reference numeral 47 denotes a rubber setting block that supports the lower two or three points of the glass 45. However, this general glass door 41 has a problem that, in the event of a fire, the sealing material 46 and the backup material 44 are burned out and the flame passes through the inner peripheral groove 43 or the glass 45 is broken and collapsed. Was.

Therefore, a fireproof glass door 5 as shown in FIG.
One is considered. This is because the inner circumferential groove 53 of the sash 52
Next, a ceramic fiber yarn 5 as shown in FIG.
After loading the backup material 55 formed into a rope shape by twisting the wire 4, the glass 57 containing the wire mesh 56 is inserted into the inner circumferential groove 53.
And a sealing material 58 is filled between the glass 57 and the opening edge of the inner peripheral groove 53. According to the fireproof glass door 51, even if a fire occurs, the backup material 55
Does not burn off, so that the flame does not pass through the inner circumferential groove 53, and the glass 57 in the wire mesh 56 does not collapse even if broken.

[0004]

However, a backup material 5 made of the ceramic fiber yarn 54 described above.
In No. 5, since the ceramic fibers were finely fluffed on the surface, there was a problem that the worker felt itching when gripping the backup material 55 by hand and loading it into the inner circumferential groove 53. In addition, there is also a problem that the ceramic fibers on the surface are finely broken and fall down ragged when carrying or when loading into the inner circumferential groove 53, especially when loading with a hard tool such as a screwdriver.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, so that an operator does not feel itching when grasping a backup material by hand and loading it into an inner peripheral groove of a sash. The ceramic fiber, the main material, does not fall off due to fine breakage even when loaded into the groove, especially when pushed with a hard tool such as a screwdriver. Is to provide.

[0006]

In order to achieve the above object, according to the present invention, there is provided a backup material loaded in an inner peripheral groove of a sash of a fireproof glass door, in which a twist per 10 cm length around a ceramic fiber yarn is provided. An organic fiber yarn having a number of zero or less than six is wound into a covering yarn, and at least two covering yarns are twisted to form a rope. “The number of twists per 10 cm length is 0” means that there is no twist at all, and “the number of twists per 10 cm length is 6 times or less” means that even a slight twist of less than 1 is included. is there.

Here, the ceramic fiber constituting the ceramic fiber yarn is an inorganic fiber having heat resistance, and examples thereof include rock wool, slag wool, silica fiber, alumina silica fiber, and alumina fiber. The heat resistance is preferably such that the safe use temperature is 600 ° C. or higher. The thickness of the single yarn of the ceramic fiber yarn is not particularly limited, but is preferably 300 to 1000 tex, more preferably 500 to 700 tex.
In order to increase the tensile strength of the ceramic fiber yarn, a glass fiber yarn, a cotton yarn, or the like may be added as a core yarn, or the ceramic fiber yarn may be twisted with a metal wire such as a stainless steel wire. The thickness of the single yarn of the glass fiber yarn as the core yarn is not limited, but is usually 30 to 150 tex. further,
The method also includes winding an organic fiber yarn around a ceramic fiber yarn in which two or more yarns are twisted to form a covering yarn.

The organic fibers constituting the organic fiber yarn are not particularly limited, and are combustible fibers such as soup and rayon, flame-resistant socks, flame-retardant fibers such as aramid fibers, and carbonized organic fibers (for example, polyacrylonitrile fiber is about 60%). Non-combustible fibers such as carbonized ones. Of these, flame-retardant fibers or non-combustible fibers are preferable. The combustible fibers may be burned out in the event of a fire, but there is no particular problem since the ceramic fiber yarn, which is the main material of the backup material, remains without being burned. The single yarn thickness of the organic fiber yarn is not particularly limited, but is preferably 100 to 500 tex, and
0-300 tex is more preferred. These organic fibers are stronger and more flexible than ceramic fibers, do not break even when bent, and have a better touch.

Although the number of ply twists of the covering yarn is not particularly limited, it is usually 2 to 30. In addition, the number of the back-up materials formed by twisting into the inner circumferential groove of the sash is not particularly limited because it depends on the size of the inner circumferential groove, but is usually 2 to 30. If it is large, the number will be more.

[0010]

The backup material for a fireproof glass door of the present invention is formed by winding an organic fiber yarn around a ceramic fiber yarn to form a covering yarn, and twisting at least two of the covering yarn to form a rope shape. Therefore, the fluff on the surface of the ceramic fiber yarn is covered with the organic fiber yarn, so that the worker does not feel itching when grasping the backup material by hand and loading it into the inner circumferential groove of the sash. In addition, even when the ceramic fiber is loaded into the inner peripheral groove when being carried, particularly when pushed with a hard tool such as a screwdriver, the ceramic fiber is not broken finely and does not fall down.

Moreover, since the number of twists per length of 10 cm of the organic fiber yarn is 0 or 6 or less, the organic fibers constituting the organic fiber yarn are loose, and the organic fiber yarn is wound around the ceramic fiber yarn. Sometimes the cross section tends to spread flat. Therefore, even if the winding pitch is increased to some extent, the neighboring organic fiber yarns that spread flatly come into contact with each other or partially overlap with each other, so that it is difficult for a gap to be formed between the neighboring organic yarns. Itching and falling problems can be reliably prevented.

[0012] If the number of twists is more than 6 (as is the case with a common covering yarn), the organic fibers constituting the organic fiber yarn are too tight, and the area around the ceramic fiber yarn is too tight. When it is wound around, the cross section remains round and becomes difficult to spread. Therefore, if the winding pitch is not considerably reduced, a gap is formed between adjacent organic fiber yarns, and the above-mentioned problems of itching and falling occur.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a backup material for a fireproof glass door embodying the present invention will be described below with reference to FIGS.

The backup member 7 of this embodiment is formed as follows. First, as shown in FIG. 1, the number of twists per 10 cm length is about 3 around a ceramic fiber yarn 10 made of alumina silica-based fiber of 600 tex in which a glass fiber yarn 9 of 68 tex is inserted as a core wire. The wrapping organic fiber yarn 11 of 200 tex is wound into a covering yarn 12. At the time of this winding, the cross section of the covering yarn 12 spreads flat, and the adjacent yarns touch or partially overlap each other, so that there is no gap between them. Next, as shown in FIG. 2, the ten covering yarns 12 are twisted to form the rope-shaped backup material 7.

FIGS. 3 and 4 show the fireproof glass door 1 loaded with the backup material 7. The fireproof glass door 1 has a rectangular frame-shaped aluminum sash 2, and an inner peripheral groove 3 having a rectangular cross section is formed on the inner periphery thereof. Two or three setting blocks 4 are placed in the inner peripheral groove 3 on the lower side. A glass 6 containing a wire mesh 5 is fitted into the inner peripheral groove 3, and the lower end of the glass 6 is placed on the setting block 4. The inner peripheral groove 3 is loaded with a plurality of backup materials 7, and a sealing material 8 such as a silicone-based or polysulfide-based material is filled between the glass 6 and the opening edge of the inner peripheral groove 3.

According to the back-up material 7 of this embodiment, the fuzz on the surface of the ceramic fiber yarn 10 is covered with the organic fiber yarn 11, and the operator grasps the back-up material 7 by hand and holds the inner circumferential groove of the sash 2. No itching when loading into 3. In addition, even when the ceramic fiber is loaded into the inner peripheral groove when being carried, particularly when pushed with a hard tool such as a screwdriver, the ceramic fiber is not broken finely and does not fall down.

When a fire occurs, the organic fiber yarn 11 may be burned out, but the ceramic fiber yarn 10 which is the main material of the backup material 7 does not burn out, so that the flame passes through the inner circumferential groove 3. In addition, the glass 6 with the wire mesh 5 does not collapse even if broken.

It should be noted that the present invention is not limited to the configuration of the above-described embodiment, and may be embodied with appropriate modifications without departing from the spirit of the invention, for example, as follows. (1) Changing the count of the ceramic fiber yarn 10 or the organic fiber yarn 11. (2) As shown in FIG. 5, for example, two ceramic fiber yarns 10 are twisted together with one stainless steel wire 13, and an organic fiber yarn 11 is wound therearound to form a covering yarn 12.

[0019]

The backup material for a fireproof glass door according to the present invention is configured as described above, so that an operator may feel itching when grasping the backup material by hand and loading it into the inner circumferential groove of the sash. Also, when carrying or loading into the inner circumferential groove, especially when loading by pushing with a hard tool such as a screwdriver, the ceramic fiber which is the main material does not fall off by being finely broken, An excellent effect that workability is improved is exhibited.

[Brief description of the drawings]

FIG. 1 is a front view of a covering yarn used for a backup material according to an embodiment of the present invention.

FIG. 2 is a front view of a backup material formed using the covering yarn.

FIG. 3 is a sectional view of a fireproof glass door equipped with the backup material.

FIG. 4 is a front view of the fireproof glass door.

FIG. 5 is a front view of a covering yarn used for a backup material according to a modified example.

FIG. 6 is a sectional view of a glass door equipped with a conventional general backup material.

FIG. 7 is a sectional view of a fireproof glass door to which another conventional backup material is attached.

FIG. 8 is a front view of a conventional backup material.

[Explanation of symbols]

 1 Fireproof glass door 2 Sash 3 Inner circumferential groove 7 Backup material 10 Ceramic fiber yarn 11 Organic fiber yarn 12 Covering yarn

Claims (1)

[Claims] An organic fiber yarn wherein the number of twists per 10 cm length around a ceramic fiber yarn is 0 or 6 times or less in a backup material loaded in an inner circumferential groove of a sash of a fireproof glass door. A backing material for a fireproof glass door, characterized in that at least two of the covering yarns are twisted to form a rope shape.