JPH0561851B2 - - Google Patents
Info
- Publication number
- JPH0561851B2 JPH0561851B2 JP60248553A JP24855385A JPH0561851B2 JP H0561851 B2 JPH0561851 B2 JP H0561851B2 JP 60248553 A JP60248553 A JP 60248553A JP 24855385 A JP24855385 A JP 24855385A JP H0561851 B2 JPH0561851 B2 JP H0561851B2
- Authority
- JP
- Japan
- Prior art keywords
- flame
- sheet
- retardant
- cable
- fire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 40
- 239000003063 flame retardant Substances 0.000 claims description 40
- 239000006260 foam Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 2
- 230000002265 prevention Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000006261 foam material Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
- Installation Of Indoor Wiring (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、多条布設したケーブルの延焼防止工
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for preventing the spread of fire in cables laid in multiple strips.
［従来の技術］
従来からケーブルの延焼防止を目的として、多
条布設したケーブル全体をゴムシートで被覆する
工法が採用されていた。[Prior Art] Conventionally, in order to prevent the spread of fire in cables, a construction method has been adopted in which the entire length of a multi-stranded cable is covered with a rubber sheet.
［発明が解決しようとする問題点］
しかし、前述した工法によると、ケーブルと難
燃性ゴムシートとの間に空〓が不可避的に生じ、
その空〓を通して酸素の供給が行われるため、ケ
ーブルに着火した場合の延焼が食い止められない
という問題があつた。[Problems to be solved by the invention] However, according to the above-mentioned construction method, a void inevitably occurs between the cable and the flame-retardant rubber sheet.
Since oxygen was supplied through the air, there was a problem in that if the cable were to catch fire, the spread of fire could not be stopped.
本発明は、前述した従来技術の問題を解決する
ため、延焼防止効果の優れ尚且つ施工性等の点で
も問題のないケーブルの延焼防止工法を提供する
ことに目的がある。 SUMMARY OF THE INVENTION In order to solve the problems of the prior art described above, the present invention has an object to provide a method for preventing the spread of fire in cables, which has an excellent fire spread prevention effect and is free from problems in terms of workability.
［問題点を解決するための手段］
本発明により提供するケーブルの延焼防止工法
は、難燃性ゴムシートの片面に延焼時の熱により
発泡する難燃性発泡材シートを未発泡状態で予め
積層一体化した難燃性積層シートを、該難燃性発
泡材シートが内側で難燃性ゴムシートが外被とな
るように多条布設したケーブル全体に一括被覆す
ることを特徴とする。[Means for Solving the Problems] The cable fire prevention method provided by the present invention involves pre-laminating a flame-retardant foam sheet in an unfoamed state on one side of a flame-retardant rubber sheet, which foams due to the heat generated when the fire spreads. It is characterized in that the integrated flame-retardant laminated sheet is coated all at once over the entire cable, which is laid in multiple strips, such that the flame-retardant foam sheet serves as the inside and the flame-retardant rubber sheet serves as the outer sheath.
［実施例］
以下、本発明の実施例を添付図面により説明す
る。[Examples] Examples of the present invention will be described below with reference to the accompanying drawings.
第１図は、難燃性ゴムシート２の片面に難燃性
発泡材シート３を未発泡状態で予め積層一体化し
た難燃性積層シート１の一例を示すものである。
尚、図示するようにケーブルの延焼時に難燃性発
泡材シート３が加熱により発泡し易いようにさら
に可燃性発泡材シート４を積層してもよい。 FIG. 1 shows an example of a flame-retardant laminate sheet 1 in which a flame-retardant foam sheet 3 is laminated in advance in an unfoamed state on one side of a flame-retardant rubber sheet 2.
In addition, as shown in the figure, a combustible foam material sheet 4 may be further laminated so that the flame retardant foam material sheet 3 is easily foamed by heating when the cable fire spreads.
こうして製作した難燃性積層シート１を、難燃
性発泡材シート３が内側で難燃性ゴムシート２が
外被となるように多条布設したケーブル５の全体
に一括被覆するものである。第２図は、上記のよ
うな工法を経て難燃性積層シート１を取り付けた
状態を示す。 The thus produced flame-retardant laminated sheet 1 is collectively coated over the cable 5, which is laid in multiple strips so that the flame-retardant foam sheet 3 is on the inside and the flame-retardant rubber sheet 2 is on the outside. FIG. 2 shows a state in which the flame-retardant laminate sheet 1 is attached using the method described above.
ところで、難燃性発泡材はその組成から慨して
脆い傾向があり、それをシート化して単独で強く
巻き付けるとシート切れを起こす恐れがあり、そ
のためある程度弛めに慎重に巻き付けねばなら
ず、施工性の点で問題があり、また、上記のよう
に弛めに巻き付けるとケーブルに対するシートの
密着性が悪くなつてケーブルの通電時に生ずる熱
がシートに伝わりにくくなり、ひいてはケーブル
通電時の熱が外部に容易に発散せず、ケーブルの
通電容量を徒に制限する恐れがあつた。 By the way, flame-retardant foam materials generally tend to be brittle due to their composition, and if they are made into sheets and wrapped tightly around each other, there is a risk of the sheet breaking. In addition, if the sheet is wrapped loosely as described above, the adhesion of the sheet to the cable will deteriorate, making it difficult for the heat generated when the cable is energized to be transferred to the sheet, and the heat generated when the cable is energized will be transferred to the outside. There was a risk that the current carrying capacity of the cable would be unnecessarily limited.
しかし、本実施例のように、未発泡状態の難撚
性発泡材シートが張力等に対してある程度強度を
持つ而も弾性も保有する難燃性ゴムシート２に予
め積層一体化されたため、一枚の可撓性シートを
扱うと同様な要領で而も難燃性ゴムシート２の強
度及び弾性力に対抗できる巻き付け力で弛みなく
巻き付けることができ、シート巻き付け作業が頗
る容易で施工性の点で優れている。また、上記の
ように難燃性ゴムシートの強度及び弾性力に対抗
できる巻付け力で弛みなく巻き付けられることか
ら、難燃性発泡材シート３が未発泡状態のままで
ケーブル５に密着して巻き付けられ、而も難燃性
発泡材シート３が難燃性ゴムシート２のゴム弾性
力で外側から押さえ込まれるから、ケーブル５へ
の良好な密着性が経時的に維持でき、ひいてはケ
ーブルの通電中、不可避的に生ずる熱がシートに
良く伝えられ、以て、ケーブルが通電中に生ずる
熱を随時外部に容易に発散でき、通常状態で布設
されている時のケーブルの通電容量を必要以上に
制限するというような不具合がなくなる。 However, as in this embodiment, since the unfoamed twist-resistant foam sheet is laminated and integrated in advance with the flame-retardant rubber sheet 2, which has a certain degree of strength against tension, etc., and also has elasticity, When handling a sheet of flexible sheet, it can be wrapped in the same way, but with a wrapping force that can counter the strength and elastic force of the flame-retardant rubber sheet 2, without any slack, and the sheet wrapping work is easy and easy to install. Excellent. In addition, since the flame-retardant foam sheet 3 is wrapped tightly around the cable 5 in an unfoamed state because it is wrapped without slack with a wrapping force that can counteract the strength and elastic force of the flame-retardant rubber sheet as described above. Since the flame-retardant foam sheet 3 is pressed down from the outside by the rubber elastic force of the flame-retardant rubber sheet 2, good adhesion to the cable 5 can be maintained over time, and even while the cable is energized. The unavoidably generated heat is well conducted to the sheet, and the heat generated while the cable is energized can be easily dissipated to the outside at any time, and the current carrying capacity of the cable when it is laid under normal conditions is unnecessarily restricted. This eliminates problems such as
第３図は、第２図に示す延焼防止工法を施した
多条布設ケーブルの延焼後の状態を示すもので、
延焼時の高熱により難燃性発泡材シート３が発泡
して難燃性ゴムシート２とケーブル５との間の空
〓を埋め、それによつて酸素の供給を妨げ、ケー
ブル５の延焼を効果的に防止することができる。 Figure 3 shows the state of the multi-stranded cable after the fire has spread, using the fire spread prevention method shown in Figure 2.
The flame-retardant foam sheet 3 foams due to the high heat during the fire spread, filling the space between the flame-retardant rubber sheet 2 and the cable 5, thereby blocking the supply of oxygen and effectively preventing the spread of the fire in the cable 5. can be prevented.
［発明の作用・効果］
以上説明したような本発明にかかるケーブルの
延焼防止工法によれば、延焼時の高熱により難燃
性発泡材シートが発泡して難燃性ゴムシートとケ
ーブルとの間の空隙を埋め、以て酸素の供給を防
いでケーブルの着火を防ぐので、ケーブルの延焼
防止効果が大幅に向上する。[Operations and Effects of the Invention] According to the cable fire spread prevention method of the present invention as explained above, the flame-retardant foam sheet foams due to the high heat during the fire spread, and the gap between the flame-retardant rubber sheet and the cable is This prevents the cable from igniting by filling the voids in the cable and thereby preventing the supply of oxygen, thereby greatly improving the effectiveness of preventing the spread of fire in the cable.
また、本発明の延焼防止工法では、未発泡状態
の難燃性発泡材シートが張力等に対してある程度
強度を持す而も弾性も保有する難燃性ゴムシート
に予め積層一体化されたため、一枚の可撓性シー
トを扱うと同様な要領で而も難燃性ゴムシートの
強度及び弾性力に対抗できる巻き付け力で弛みな
く巻き付けることができ、シート巻き付け作業が
頗る容易で施工性の点で優れたものである。さら
に、上記のように難燃性ゴムシートの強度及び弾
性力に対抗できる巻付け力で弛みなく巻き付けら
れることから、難燃性発泡材シートが未発泡状態
のままでケーブルに密着して巻き付けられ、而も
難燃性発泡材シートが難燃性ゴムシートのゴム弾
性力で外側から押さえ込まれるから、ケーブルへ
の良好な密着性が経時的に維持でき、ひいてはケ
ーブルの通電中、不可避的に生ずる熱が随時シー
トに良く伝えられ、以て、ケーブルが通電された
時の熱を外部に容易に発散でき、通常状態で布設
されている時のケーブルの通電容量を必要以上に
制限するという問題の解消が図れる。 In addition, in the fire spread prevention method of the present invention, an unfoamed flame-retardant foam sheet is laminated and integrated in advance with a flame-retardant rubber sheet that has a certain degree of strength against tension, etc. and also has elasticity. When handling a single flexible sheet, it can be wrapped in the same way, but with a wrapping force that can counter the strength and elastic force of a flame-retardant rubber sheet, without any slack, making the sheet wrapping work much easier and easier to work with. It is excellent. Furthermore, as mentioned above, the flame-retardant foam sheet can be tightly wrapped around the cable in its unfoamed state because it can be wrapped without slack with a wrapping force that can counteract the strength and elasticity of the flame-retardant rubber sheet. Moreover, since the flame-retardant foam sheet is pressed down from the outside by the rubber elastic force of the flame-retardant rubber sheet, good adhesion to the cable can be maintained over time, which will inevitably occur while the cable is energized. Heat is well conducted to the sheet at all times, and the heat when the cable is energized can be easily dissipated to the outside, which solves the problem of unnecessarily restricting the current carrying capacity of the cable when it is laid under normal conditions. It can be resolved.
第１図は本発明の工法において用いられる難燃
性積層シートの例を示す断面図、第２図は本発明
の工法によつて難燃性積層シートが施された多条
布設ケーブルの例を示す斜視図、第３図は同第２
図のケーブルに延焼を受けた後の状態を示す断面
図である。
符号において、１は難燃性積層シート、２は難
燃性ゴムシート、３は難燃性発泡材シート、４は
可燃性発泡材シート、５はケーブルである。
Figure 1 is a cross-sectional view showing an example of a flame-retardant laminated sheet used in the construction method of the present invention, and Figure 2 is an example of a multi-stranded cable to which a flame-retardant laminated sheet has been applied by the construction method of the present invention. The perspective view shown in Figure 3 is the same as Figure 2.
FIG. 3 is a cross-sectional view showing the state of the cable shown in the figure after the fire has spread. In the symbols, 1 is a flame-retardant laminated sheet, 2 is a flame-retardant rubber sheet, 3 is a flame-retardant foam sheet, 4 is a combustible foam sheet, and 5 is a cable.
Claims (1)
発泡する難燃性発泡材シートを未発泡状態で予め
積層一体化した難燃性積層シートを、該難燃性発
泡材シートが内側で難燃性ゴムシートが外被とな
るように多条布設したケーブル全体に一括被覆す
ることを特徴とするケーブルの延焼防止工法。1 A flame-retardant laminated sheet is prepared by laminating an unfoamed flame-retardant foam sheet on one side of a flame-retardant rubber sheet, which foams due to the heat generated during the spread of fire. A method for preventing the spread of fire in cables, which is characterized by covering the entire cable, which is laid in multiple strips, with a flammable rubber sheet as the outer sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60248553A JPS62110420A (en) | 1985-11-06 | 1985-11-06 | Prevention of fire spread along cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60248553A JPS62110420A (en) | 1985-11-06 | 1985-11-06 | Prevention of fire spread along cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62110420A JPS62110420A (en) | 1987-05-21 |
| JPH0561851B2 true JPH0561851B2 (en) | 1993-09-07 |
Family
ID=17179881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60248553A Granted JPS62110420A (en) | 1985-11-06 | 1985-11-06 | Prevention of fire spread along cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62110420A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH064952U (en) * | 1992-06-17 | 1994-01-21 | 三洋電機株式会社 | Optical disk device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02203598A (en) * | 1989-02-01 | 1990-08-13 | Sumitomo Electric Ind Ltd | Wiring in operation panel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58164127U (en) * | 1982-04-27 | 1983-11-01 | 日本電信電話株式会社 | In-office cable |
-
1985
- 1985-11-06 JP JP60248553A patent/JPS62110420A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH064952U (en) * | 1992-06-17 | 1994-01-21 | 三洋電機株式会社 | Optical disk device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62110420A (en) | 1987-05-21 |
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