JP2004150619A - Joint for connecting fireproof double tube - Google Patents

Joint for connecting fireproof double tube Download PDF

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Publication number
JP2004150619A
JP2004150619A JP2002350476A JP2002350476A JP2004150619A JP 2004150619 A JP2004150619 A JP 2004150619A JP 2002350476 A JP2002350476 A JP 2002350476A JP 2002350476 A JP2002350476 A JP 2002350476A JP 2004150619 A JP2004150619 A JP 2004150619A
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Japan
Prior art keywords
fire
joint
layer
aluminum foil
resistant
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JP2002350476A
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JP4333981B2 (en
Inventor
Sadaji Ookida
貞治 大木田
Takeshi Hamada
猛 浜田
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Funen Across Corp
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Funen Across Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a well-constructive and fireproof joint for connecting a fireproof double tube, with a thin fireproof layer. <P>SOLUTION: A fiber fireproof adhesive layer 5 formed by impregnating a fired and carbonized acrylic fiber cloth 3 with an adhesive 4 is formed on the single face of an aluminum foil 2. After the acrylic fiber cloth is impregnated with the adhesive to be adhered to a fireproof outer tube constituting the fireproof double tube and to the aluminum foil, the acrylic fiber cloth is adhered to the aluminum foil. The aluminum foil and the fiber fireproof adhesive layer are formed into tapes, and slits 9 are provided in the side edges of the tapes, depending on cases. The aluminum foil is fired and painted in the same color as that of the fireproof outer tube. A fire retardant and pressure sensitive adhesive is used as the adhesive, and a fire retardant fiber mesh 8 is laid between the aluminum foil and the fiber fireproof adhesive layer. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、モルタル等の耐火性外管を備えた耐火二層管を、同様のモルタル等の耐火性外管を備えた耐火二層継手や、鋳鉄製あるいは鋼板製などの耐火継手に接続する場合に接続部の隙間を封鎖するために使用される耐火性の目地に関する。
【０００２】
【従来の技術】
従来、耐火性の配管として、硬質塩ビ管等の非耐火性の内管と、繊維モルタル等の耐火性の外管を重合した耐火二層管や耐火二層継手が知られている（例えば特許文献１参照）。一般には、安価で耐蝕性と通水性を良好にするため、この種の耐火二層管の内管には硬質塩化ビニルやポリエチレンが使用されている。また、この種の耐火二層管を耐火二層継手等の継手に接続する場合、その接続部の継ぎ目の外周面に、ケイ酸ソーダを主原料とするスラリーの層をアルミ箔の片面に形成した幅３０ｍｍ程度のテープを巻き付け、スラリーの層を外周面に手で押さえ付けて接着することで継ぎ目の隙間を塞ぐことが行われている（特許文献２参照）。該スラリーの層は次第に乾燥硬化してその隙間を塞ぎ、火災等により該耐火二層管に熱が作用したとき、該スラリー層がセラミック化してその隙間から管内外に熱や煙が流通することが阻止され、その結果、延焼などの災害が防止される。
【０００３】
【特許文献１】
特開平９−１５２０６５ （図１）
【０００４】
【特許文献２】
特開平９−２７２８５６ 要約
【０００５】
【発明が解決しようとする課題】
上記のテープ巻き付けする目地作業は、熟練を必要とせず狭い場所でも比較的簡単に行え、該テープは配管の外周長さに応じて切断して使用するので、一種のテープで各種の口径の配管に対応でき、継ぎ足して使用できるのでテープの無駄がないなどの利点があるが、スラリー層の厚さは巻き付け作業時に押さえ付けられても層切れを生じない程度の例えば３．５ｍｍの厚さに形成する必要があり、これを薄くすると作業時の周面からの押さえ付けでスラリー層が切れたり薄くなり、火災時に目地としての機能が損なわれ、接続部の隙間から管内外へ熱や煙が伝わるようになって好ましくない。また、テープは使用上の便宜を考慮してロール状に巻かれて供給されるが、スラリー層が厚いため長尺のテープはロール径が大きくなり、取り扱いや輸送に不便があった。しかも、テープが、例えば踏みつけられたり落下したり、押圧力や衝撃力を受けたとき、粘土状のスラリー層が目地作業に適さない程度に壊れる不都合があった。このスラリー層は水溶性であるため、施工後に水がかかると溶け出して目地の機能が果たせなくなる欠点がある。
【０００６】
本発明は、このような不便や不都合を解決した、切れにくく壊れにくいしかも薄く耐水性のある耐火層を備えた耐火二層管接続用の目地を提供することを目的とするものである。
【０００７】
【課題を解決するための手段】
本発明では、上記目的を達成するため、アルミ箔の片面に、焼成炭化したアクリル繊維布帛に接着剤を含浸させた構成の繊維耐火接着層を形成した。該耐火二層管を構成する耐火性外管、および上記アルミ箔に接合する接着剤をアクリル繊維布帛に含浸させてから該アクリル繊維布帛を該アルミ箔に接合して構成することで、アルミ箔と布帛との一体性のよい耐火二層管接続用目地が得られる。該アルミ箔及び繊維耐火接着層は、使用の便宜のためテープ状に形成され、必要に応じてそのテープの側縁にスリットが設けられる。また、該アルミ箔に耐火性外管と同系色を焼付け塗装することで外観のよい施工が行なえる。該接着剤には難燃性且つ感圧性の接着剤を使用すること、該アルミ箔と繊維耐火接着層との間に難燃性繊維のメッシュを介在させることが好ましい。該繊維耐火接着層を厚さ２ｍｍ以下に形成すると、巻き径が小さくなり柔軟性も増して作業性が向上する。
【０００８】
【発明の実施の形態】
図面に基づき本発明の実施の形態を説明すると、図１に於いて、符号１はテープ状に形成した耐火二層管接続用目地を示し、アルミ箔２の片面に、焼成炭化したアクリル繊維布帛３に難燃性且つ感圧性の接着剤４を含浸させて得られた繊維耐火接着層５を形成して構成される。
【０００９】
該耐火二層管接続用目地１は、図２及び図３に示したように、内管６ａが塩化ビニルやポリエチレンなどの非耐火性材料で形成されると共に外管６ｂが繊維モルタルなどの耐火性材料で構成された耐火二層管６の接続部に巻き付けて使用されるもので、図２及び図３の例では耐火二層管６と耐火二層継手７の接続部に巻き付けて使用した場合を示す。この耐火二層継手７も、非耐火性材料から成る内管７ａと、耐火性材料から成る外管７ｂで構成される。これらの管や継手の接続部に振動などで隙間が生じると、外部からの火災の熱などが作用したときにその隙間から管内へ熱が侵入し、内管６ａ、７ａが燃焼して延焼原因になるが、接続部に該目地１を巻き付けておくことでその燃焼が防止される。
【００１０】
該焼成炭化したアクリル繊維布帛３には、例えば、１．２から２デニール程度の繊維を厚さ２ｍｍ程度の薄いフェルト状或いは不織布状に形成したものが使用される。この薄い焼成炭化アクリル繊維布帛３に、耐火二層管６の繊維モルタルの耐火性外管６ｂと接着する難燃性の接着剤４を含浸させ、これにより繊維耐火接着層５を形成し、この薄い繊維耐火接着層５を例えば厚さ２０ミクロン程度のアルミ箔２に重層接着し、テープ状に裁断するなどの適当な成型加工を行なうことで耐火二層管接続用目地１が得られる。該アルミ箔２は、目地の施工時に手が該繊維耐火接着層５の接着剤４に接着することを防止するためと、柔軟で施工が容易で難燃性であることから繊維耐火接着層５の外面に設けられており、該繊維耐火接着層５のアルミ箔２と重合しない側の面には、図示してないが、接合面の保護とロール状に巻回するために剥離紙を重合しておくことが好ましい。
【００１１】
尚、該アルミ箔２と繊維耐火接着層５との間には、ガラス繊維などの難燃性繊維から成るメッシュ８を介在させ、目地の強度を増すようにした。該接着剤４としては、例えば、アクリル酸エステル系共重合物２５〜３５％、酢酸エチル５０〜６０％、粘着付与樹脂５〜１５％の成分からなるアクリル系感圧性接着剤が使用される。
【００１２】
テープ状に形成した本発明の目地１は、例えば図２に示したように、耐火二層管６と耐火二層継手７の接続部にアルミ箔２を外面として巻き付け、その周面から手で押さえて接着するもので、この使用方法は従来のスラリー層を備えたテープ状目地の場合と特に変わりがないが、本発明の目地１は接着剤４を含浸した焼成炭化アクリル繊維布帛３の繊維耐火接着層５が芯材になっているので、力をこめて耐火二層管の外面へ該目地１を押し付けても該繊維耐火接着層５が層切れすることがない。また該アクリル繊維布帛３は、燃えず、しかも溶融、収縮することもなく、断熱性に富み、軽量且つ柔軟であるので施工性がよく、１巻あたりの長さを長くすることができ、衝撃を受けても接着層５が壊れることもない。更に、該繊維耐火接着層５を構成する焼成炭化アクリル繊維布帛３は、水を浴びても従来のスラリー層のように流失することがないから、耐火目地機能を確実に果たすことができる。
【００１３】
耐火二層管６と耐火二層継手７の接続部には往々にして管の外径差による図３に見られるような段差１０が存在し、このような段差のある接続部に巻き付けたとき、外径の小さい管の周面の目地１にシワが生じ、これに伴い周面との接着部に隙間を生じるおそれがあったが、図４に示すように、テープ状目地１の側縁にスリット９を形成しておくことで、シワの発生が防止され、隙間のない接着を行えるようになる。また、該アルミ箔２の表面に耐火性外管と同系色を焼付け塗装しておくと、耐候性が増し、目地施工の違和感も緩和することができる。
【００１４】
【実施例】
２．０デニール、繊径１２ミクロン、比重１．４の焼成炭化アクリル繊維で厚さ２ｍｍの不織布を形成し、この繊維布帛にアクリル酸エステル系共重合物２５〜３５％、酢酸エチル５０〜６０％、粘着付与樹脂５〜１５％の成分からなるアクリル系感圧性接着剤を含浸させ、繊維耐火接着層５を形成した。そしてこの繊維耐火接着層５の片面にガラス繊維から成る難燃性繊維のメッシュ８とアルミ箔２を重合すると共に他の面に剥離紙を重合し、テープ状に裁断した。テープの幅は５０ｍｍとした。
【００１５】
そして、このテープ状目地１を、耐火性外管６ｂ、７ｂが繊維モルタルで形成された耐火二層管６と耐火二層継手７の隙間を有する各接合部に巻き付け、その端部同士は多少重合するようにした。該耐火二層継手７は床スラブ１１を貫通する貫通孔１２内に設置した。
【００１６】
床スラブ１１の下方の室１３内をＩＳＯ ８３４−１の加熱曲線に基づき加熱することによりこの接合部の耐火試験を行った。床スラブ１１の下方の耐火二層管の接続部の目地１は、アルミ箔２が燃え落ち、繊維耐火接着層５に含浸させた接着剤は蒸発したが、焼成炭化アクリル繊維布帛３は原形を保持したまま炭素化していた。また、室１３内の耐火二層管６の耐火性外管６ｂ及び内管６ａは破損し、耐火二層継手７の内管７ａも変形したが、上方の室１４に位置する接続部に施した目地１には変化がなく、その接続部からの煙や火炎の噴出が防止され、耐火性目地としての機能を十分に果たし得た。
【００１７】
【発明の効果】
以上のように、本発明の目地は、アルミ箔の片面に、焼成炭化したアクリル繊維布帛に接着剤が含浸した繊維耐火接着層を形成したので、薄く柔軟で層切れのしない軽量な耐火性の目地が得られ、目地作業の作業性が向上するのみならず、層厚が薄いので１巻あたりの長さの長いテープ状目地を提供でき、かさばらないので輸送も便利になる。また、柔軟な焼成炭化アクリル繊維布帛が芯材になっているので、耐火二層管の振動や揺れにより外れることもなく耐水性も良好になる等の効果があり、請求項２以下の構成とすることにより本発明の目的を一層適切に達成できる。
【図面の簡単な説明】
【図１】本発明の実施の形態を示す説明図
【図２】本発明の目地の使用状態を示す斜視図
【図３】図２の截断側面図
【図４】本発明の他の実施の形態を示す説明図
【符号の説明】
１ 耐火二層管接続用目地、２ アルミ箔、３ 焼成炭化したアクリル繊維布帛、４ 接着剤、５ 繊維耐火接着層、６ 耐火二層管、６ｂ・７ｂ 耐火性外管、８ 難燃性繊維のメッシュ、９ スリット、[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention connects a fire-resistant double-layer pipe with a fire-resistant outer pipe such as mortar to a fire-resistant double-layer joint with a similar fire-resistant outer pipe such as mortar, or a fire-resistant joint made of cast iron or steel plate. It relates to a refractory joint, which is used in some cases to seal gaps in the connection.
[0002]
[Prior art]
Conventionally, as fire-resistant pipes, fire-resistant double-layer pipes and fire-resistant double-layer joints obtained by polymerizing a non-fire-resistant inner pipe such as a hard PVC pipe and a fire-resistant outer pipe such as fiber mortar are known (for example, see Patents). Reference 1). Generally, hard vinyl chloride or polyethylene is used for the inner pipe of this type of fire-resistant double-layer pipe in order to make it cheap and to have good corrosion resistance and water permeability. Also, when connecting this type of fire-resistant double-layer pipe to a joint such as a fire-resistant double-layer joint, a layer of slurry made mainly of sodium silicate is formed on one side of aluminum foil on the outer peripheral surface of the joint at the joint. A gap of the seam is closed by winding a tape having a width of about 30 mm and pressing and bonding the slurry layer to the outer peripheral surface by hand (see Patent Document 2). The slurry layer is gradually dried and hardened to close the gap, and when heat is applied to the refractory double-layer pipe due to a fire or the like, the slurry layer becomes ceramic and heat or smoke flows through the gap into and out of the pipe. As a result, disasters such as fire spread are prevented.
[0003]
[Patent Document 1]
JP-A-9-152065 (FIG. 1)
[0004]
[Patent Document 2]
Summary of Japanese Patent Application Laid-Open No. 9-272856
[Problems to be solved by the invention]
The above-mentioned joint work for winding the tape can be performed relatively easily even in a narrow place without skill, and the tape is cut and used according to the outer peripheral length of the pipe. It has the advantage that there is no waste of tape because it can be used as a supplement, but the thickness of the slurry layer is, for example, 3.5 mm so that it does not break even when pressed down during the winding operation. If this is thinned, the slurry layer will be cut or thinned by pressing from the peripheral surface during work, and the function as a joint will be impaired at the time of fire, and heat and smoke will flow into and out of the pipe through the gap between the connections. It is not preferable because it is transmitted. In addition, the tape is supplied in the form of a roll in consideration of convenience in use. However, since the slurry layer is thick, a long tape has a large roll diameter, which is inconvenient for handling and transportation. Moreover, when the tape is stepped on, dropped, or receives a pressing force or an impact force, for example, there is a disadvantage that the clay-like slurry layer is broken to such an extent that it is not suitable for joint work. Since this slurry layer is water-soluble, it has a drawback that if it is exposed to water after construction, it will be dissolved and the function of the joint cannot be achieved.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to provide a joint for a fire-resistant double-layer pipe connection provided with a fire-resistant layer which is hard to cut, break, and is thin and has water resistance, which solves such inconvenience and inconvenience.
[0007]
[Means for Solving the Problems]
In the present invention, in order to achieve the above object, a fiber refractory adhesive layer having a structure in which an adhesive is impregnated in a fired and carbonized acrylic fiber cloth is formed on one surface of an aluminum foil. The refractory outer tube constituting the refractory double-layer tube, and the adhesive bonded to the aluminum foil are impregnated into an acrylic fiber fabric, and then the acrylic fiber fabric is bonded to the aluminum foil to form an aluminum foil. A joint for fire-resistant double-layer pipe connection with good integration between the fabric and the fabric is obtained. The aluminum foil and fiber refractory adhesive layer are formed in a tape shape for convenience of use, and a slit is provided on a side edge of the tape as needed. In addition, by baking and coating the aluminum foil with a color similar to that of the refractory outer tube, it is possible to perform construction with good appearance. It is preferable to use a flame-retardant and pressure-sensitive adhesive as the adhesive, and to interpose a flame-retardant fiber mesh between the aluminum foil and the fiber refractory adhesive layer. When the fiber refractory adhesive layer is formed to a thickness of 2 mm or less, the winding diameter is reduced, the flexibility is increased, and the workability is improved.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a joint for connecting a refractory double-layered pipe formed in a tape shape, and an acrylic fiber cloth fired and carbonized on one surface of an aluminum foil 2. 3 is formed by forming a fiber refractory adhesive layer 5 obtained by impregnating a flame-retardant and pressure-sensitive adhesive 4.
[0009]
As shown in FIGS. 2 and 3, the joint 1 for connecting a refractory double-layer pipe has an inner pipe 6a formed of a non-refractory material such as vinyl chloride or polyethylene, and an outer pipe 6b formed of a refractory material such as fiber mortar. It is used by being wrapped around the connection part of the fire-resistant double-layer pipe 6 made of a refractory material. In the example of FIG. 2 and FIG. Show the case. This refractory two-layer joint 7 also includes an inner pipe 7a made of a non-refractory material and an outer pipe 7b made of a refractory material. If a gap is formed in the connection portion of these pipes or joints due to vibration or the like, when heat from a fire from the outside acts on the pipe, heat penetrates into the pipe through the gap, and the inner pipes 6a and 7a burn to cause a fire spread. However, by wrapping the joint 1 around the connection portion, the combustion is prevented.
[0010]
As the fired and carbonized acrylic fiber cloth 3, for example, a fiber having a thickness of about 1.2 to 2 deniers formed into a thin felt or nonwoven fabric having a thickness of about 2 mm is used. This thin fired carbonized acrylic fiber fabric 3 is impregnated with a flame-retardant adhesive 4 that adheres to the fire-resistant outer tube 6b of the fiber mortar of the fire-resistant double-layer tube 6, thereby forming a fiber fire-resistant adhesive layer 5. The thin fiber refractory adhesive layer 5 is laminated on the aluminum foil 2 having a thickness of, for example, about 20 microns, and is subjected to appropriate molding such as cutting into a tape shape, thereby obtaining the joint 1 for refractory double-layer pipe connection. The aluminum foil 2 is used to prevent hands from adhering to the adhesive 4 of the fiber refractory adhesive layer 5 at the time of jointing, and because the aluminum foil 2 is flexible, easy to construct, and flame retardant. Although not shown, a release paper is polymerized on the outer surface of the fiber refractory adhesive layer 5 on the side not overlapping with the aluminum foil 2 in order to protect the bonding surface and wind it into a roll. It is preferable to keep it.
[0011]
In addition, a mesh 8 made of flame-retardant fiber such as glass fiber was interposed between the aluminum foil 2 and the fiber refractory adhesive layer 5 so as to increase the joint strength. As the adhesive 4, for example, an acrylic pressure-sensitive adhesive composed of 25 to 35% of an acrylate copolymer, 50 to 60% of ethyl acetate, and 5 to 15% of a tackifier resin is used.
[0012]
The joint 1 of the present invention formed in a tape shape is, for example, as shown in FIG. The method of use is the same as that of a conventional tape-like joint having a slurry layer, but the joint 1 of the present invention is a fiber of the calcined acrylic carbon fiber cloth 3 impregnated with the adhesive 4. Since the refractory adhesive layer 5 is a core material, the fibrous refractory adhesive layer 5 does not break even when the joint 1 is pressed against the outer surface of the refractory double-layer pipe with force. In addition, the acrylic fiber cloth 3 does not burn, does not melt or shrink, has good heat insulation, is lightweight and flexible, has good workability, and can increase the length per roll. The adhesive layer 5 does not break even when it is subjected. Further, the fired acrylic carbonized fiber fabric 3 constituting the fiber refractory adhesive layer 5 does not flow away even when exposed to water unlike a conventional slurry layer, so that the fireproof joint function can be reliably performed.
[0013]
The joint between the fire-resistant double-layer pipe 6 and the fire-resistant double-layer joint 7 often has a step 10 as shown in FIG. 3 due to a difference in outer diameter of the pipe. In addition, wrinkles may be formed on the joint 1 on the peripheral surface of the tube having a small outer diameter, and there is a possibility that a gap may be formed at the bonding portion with the peripheral surface. However, as shown in FIG. By forming the slits 9 in advance, generation of wrinkles is prevented, and bonding without gaps can be performed. Further, if the surface of the aluminum foil 2 is baked and painted in a color similar to that of the refractory outer tube, the weather resistance is increased, and the uncomfortable feeling of joint construction can be reduced.
[0014]
【Example】
A non-woven fabric having a thickness of 2 mm is formed from calcined carbonized acrylic fibers having a denier of 2.0, a fiber diameter of 12 microns, and a specific gravity of 1.4, and 25 to 35% of an acrylate-based copolymer and 50 to 60 ethyl acetate are formed on the fiber cloth. %, And an acrylic pressure-sensitive adhesive comprising 5 to 15% of a tackifying resin was impregnated to form a fiber refractory adhesive layer 5. Then, the flame-retardant fiber mesh 8 made of glass fiber and the aluminum foil 2 were polymerized on one side of the fiber refractory adhesive layer 5, and release paper was polymerized on the other side, and cut into a tape shape. The width of the tape was 50 mm.
[0015]
Then, the tape-shaped joint 1 is wound around each joint having a gap between the fire-resistant double-layer pipe 6 and the fire-resistant double-layer joint 7 in which the fire-resistant outer pipes 6b and 7b are formed of fiber mortar. It was made to polymerize. The refractory two-layer joint 7 was installed in a through hole 12 penetrating a floor slab 11.
[0016]
The joint 13 was subjected to a fire resistance test by heating the inside of the chamber 13 below the floor slab 11 based on the heating curve of ISO 834-1. At the joint 1 of the connection portion of the refractory double-layer pipe below the floor slab 11, the aluminum foil 2 burns down and the adhesive impregnated in the fiber refractory adhesive layer 5 evaporates, but the calcined acrylic carbon fiber fabric 3 has the original shape. It was carbonized while maintaining it. In addition, the refractory outer pipe 6b and the inner pipe 6a of the refractory double-layer pipe 6 in the chamber 13 were damaged, and the inner pipe 7a of the refractory two-layer joint 7 was also deformed. There was no change in the joint 1 thus obtained, and the emission of smoke and flame from the joint was prevented, and the joint 1 could sufficiently function as a fire-resistant joint.
[0017]
【The invention's effect】
As described above, the joint of the present invention has a fiber refractory adhesive layer in which an adhesive is impregnated into a fired and carbonized acrylic fiber fabric on one side of an aluminum foil, so that it is thin, flexible, and has a light-weight, fire resistant layer. Joints are obtained, and not only the workability of the joint work is improved, but also the tape-like joint having a long length per one roll can be provided because the layer thickness is thin, and transportation is convenient because it is not bulky. In addition, since the soft fired carbonized acrylic fiber cloth is used as the core material, there is an effect that the water resistance is improved without being detached due to the vibration or shaking of the fire-resistant double-layered pipe. By doing so, the object of the present invention can be more appropriately achieved.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing an embodiment of the present invention; FIG. 2 is a perspective view showing a use state of a joint of the present invention; FIG. 3 is a cutaway side view of FIG. 2; FIG. Explanatory diagram showing the form [Description of reference numerals]
DESCRIPTION OF SYMBOLS 1 Joint for fire-resistant double-layer pipe connection, 2 aluminum foil, 3 fired and carbonized acrylic fiber fabric, 4 adhesive, 5 fiber fire-resistant adhesive layer, 6 fire-resistant double-layer pipe, 6b / 7b fire-resistant outer pipe, 8 flame-retardant fiber Mesh, 9 slits,

Claims (7)

アルミ箔の片面に、焼成炭化したアクリル繊維布帛に接着剤を含浸させた繊維耐火接着層を形成したことを特徴とする耐火二層管接続用目地。What is claimed is: 1. A joint for connecting fire-resistant double-layer pipes, wherein a fire-resistant fire-bonded acrylic fiber cloth impregnated with an adhesive is formed on one side of an aluminum foil. 耐火二層管を構成する耐火性外管、および上記アルミ箔に接合する接着剤をアクリル繊維布帛に含浸させてから該アクリル繊維布帛を該アルミ箔に接合したことを特徴とする請求項１に記載の耐火二層管接続用目地。2. The acrylic fiber cloth is bonded to the aluminum foil after the acrylic fiber cloth is impregnated with the adhesive for bonding to the aluminum foil and the refractory outer pipe constituting the fire-resistant double-layer pipe. The joint for connection of the refractory double-layer pipe described. 上記アルミ箔及び繊維耐火接着層をテープ状に形成したことを特徴とする請求項１または２に記載の耐火二層管接続用目地。3. The joint for connecting a two-layer fire-resistant pipe according to claim 1, wherein the aluminum foil and the fiber fire-resistant adhesive layer are formed in a tape shape. 上記アルミ箔及び繊維耐火接着層をテープ状に形成すると共にそのテープの側縁にスリットを設けたことを特徴とする請求項１または２に記載の耐火二層管接続用目地。3. The joint for connecting a fire-resistant double-layer pipe according to claim 1, wherein the aluminum foil and the fiber fire-resistant adhesive layer are formed in a tape shape, and a slit is provided on a side edge of the tape. 上記アルミ箔に耐火性外管と同系色を焼付け塗装することを特徴とする請求項１から４のいずれか１項に記載の耐火二層管接続用目地。The joint for connecting a two-layer fire-resistant pipe according to any one of claims 1 to 4, wherein the aluminum foil is painted with a color similar to that of the fire-resistant outer pipe. 上記接着剤に難燃性且つ感圧性の接着剤を使用することを特徴とする請求項１または２に記載の耐火二層管接続用目地。The joint for connecting a fireproof double-layer pipe according to claim 1 or 2, wherein a flame-retardant and pressure-sensitive adhesive is used as the adhesive. 上記アルミ箔と繊維耐火接着層との間に難燃性繊維のメッシュを介在させたことを特徴とする請求項１乃至５のいずれか１項に記載の耐火二層管接続用目地。6. The joint for connecting a fire-resistant double-layer pipe according to claim 1, wherein a mesh of a flame-retardant fiber is interposed between the aluminum foil and the fiber fire-resistant adhesive layer.
JP2002350476A 2002-10-28 2002-10-28 Joint for connecting fireproof double-layer pipes Expired - Fee Related JP4333981B2 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005344925A (en) * 2004-06-04 2005-12-15 Funen Akurosu Kk Drain pipe or drain pipe joint of fireproof and sound insulation
JP2007078162A (en) * 2005-09-16 2007-03-29 Inaba Denki Sangyo Co Ltd Fireproof and soundproof rolling tool
JP2008214856A (en) * 2007-02-28 2008-09-18 Kobe Jushi Kogyo Kk Covering method and covering tape for refractory material joint in refractory material covered drain pipe
JP2010065768A (en) * 2008-09-11 2010-03-25 Showa Denko Kenzai Kk Fire resistant two-layer pipe joint and manufacturing method thereof
JP2011033093A (en) * 2009-07-31 2011-02-17 Funen Akurosu Kk Fire resistant two-layer sound insulation pipe for longitudinal pipe
JP2011505979A (en) * 2007-12-11 2011-03-03 ビー イー エアロスペイス，インク． Insulating cover for flammable cushion material and passenger seat
JP2011231832A (en) * 2010-04-27 2011-11-17 Mirai Ind Co Ltd Exterior member of fluid pipe and heat insulating material of joint
KR101158861B1 (en) * 2011-04-22 2012-06-25 윌 테크놀로지(주) Structure of the floor of emp protective facility and constructing method thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005344925A (en) * 2004-06-04 2005-12-15 Funen Akurosu Kk Drain pipe or drain pipe joint of fireproof and sound insulation
JP4543134B2 (en) * 2004-06-04 2010-09-15 フネンアクロス株式会社 Connection structure of fireproof soundproof drainage pipe and fireproof soundproof drainage pipe joint
JP2007078162A (en) * 2005-09-16 2007-03-29 Inaba Denki Sangyo Co Ltd Fireproof and soundproof rolling tool
JP2008214856A (en) * 2007-02-28 2008-09-18 Kobe Jushi Kogyo Kk Covering method and covering tape for refractory material joint in refractory material covered drain pipe
JP2011505979A (en) * 2007-12-11 2011-03-03 ビー イー エアロスペイス，インク． Insulating cover for flammable cushion material and passenger seat
JP2010065768A (en) * 2008-09-11 2010-03-25 Showa Denko Kenzai Kk Fire resistant two-layer pipe joint and manufacturing method thereof
JP2011033093A (en) * 2009-07-31 2011-02-17 Funen Akurosu Kk Fire resistant two-layer sound insulation pipe for longitudinal pipe
JP2011231832A (en) * 2010-04-27 2011-11-17 Mirai Ind Co Ltd Exterior member of fluid pipe and heat insulating material of joint
KR101158861B1 (en) * 2011-04-22 2012-06-25 윌 테크놀로지(주) Structure of the floor of emp protective facility and constructing method thereof

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