JP2001052536A - Middle and tip drawing low-friction sheath cable - Google Patents
Middle and tip drawing low-friction sheath cableInfo
- Publication number
- JP2001052536A JP2001052536A JP2000163767A JP2000163767A JP2001052536A JP 2001052536 A JP2001052536 A JP 2001052536A JP 2000163767 A JP2000163767 A JP 2000163767A JP 2000163767 A JP2000163767 A JP 2000163767A JP 2001052536 A JP2001052536 A JP 2001052536A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- friction
- low
- jis
- lubricant
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 47
- 230000003068 static effect Effects 0.000 claims abstract description 30
- 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 11
- 239000003063 flame retardant Substances 0.000 claims description 11
- 239000000314 lubricant Substances 0.000 abstract description 47
- 238000004804 winding Methods 0.000 abstract description 4
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- 239000013307 optical fiber Substances 0.000 description 33
- 238000000034 method Methods 0.000 description 13
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 description 12
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 description 12
- 238000009434 installation Methods 0.000 description 12
- 239000011347 resin Substances 0.000 description 10
- 229920005989 resin Polymers 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- -1 polyethylene Polymers 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 229920001684 low density polyethylene Polymers 0.000 description 5
- 239000004702 low-density polyethylene Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 229920013716 polyethylene resin Polymers 0.000 description 4
- 229920000092 linear low density polyethylene Polymers 0.000 description 3
- 239000004707 linear low-density polyethylene Substances 0.000 description 3
- OXDXXMDEEFOVHR-CLFAGFIQSA-N (z)-n-[2-[[(z)-octadec-9-enoyl]amino]ethyl]octadec-9-enamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)NCCNC(=O)CCCCCCC\C=C/CCCCCCCC OXDXXMDEEFOVHR-CLFAGFIQSA-N 0.000 description 2
- 238000007765 extrusion coating Methods 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- SDOKZHJGUZWCDY-WRBBJXAJSA-N (9z,29z)-octatriaconta-9,29-dienedioic acid Chemical compound OC(=O)CCCCCCC\C=C/CCCCCCCCCCCCCCCCCC\C=C/CCCCCCCC(O)=O SDOKZHJGUZWCDY-WRBBJXAJSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- SWSBIGKFUOXRNJ-CVBJKYQLSA-N ethene;(z)-octadec-9-enamide Chemical compound C=C.CCCCCCCC\C=C/CCCCCCCC(N)=O.CCCCCCCC\C=C/CCCCCCCC(N)=O SWSBIGKFUOXRNJ-CVBJKYQLSA-N 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ケーブル中間を牽
引機で牽引しつつ管路内に布設する中間牽引機使用布設
方式による布設に好適な中間牽引用低摩擦外被ケーブ
ル、および圧送布設などの先端牽引布設方式による布設
に好適な先端牽引用低摩擦外被ケーブルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intermediate traction low-friction sheath cable suitable for laying by a laying system using an intermediate traction machine in which a cable middle is laid in a pipeline while being pulled by a traction machine, and pressure feeding laying. The present invention relates to a low-friction sheath cable for leading end traction suitable for laying by the leading end laying method.
【０００２】[0002]
【従来の技術】従来より、光ファイバケーブルなどのケ
ーブルを管路内に布設する方法として、ケーブル中間を
牽引機で牽引しつつ管路内に布設する中間牽引機使用布
設方式と称する方法が知られている。2. Description of the Related Art Conventionally, as a method of laying a cable such as an optical fiber cable in a pipeline, there is known a method called an intermediate traction machine laying system in which a cable middle is laid in a pipeline while being pulled by a traction machine. Have been.
【０００３】この布設方式では、ケーブルの布設張力を
減少させるとともに、布設長の長尺化を図るため、潤滑
剤をケーブル表面に塗布することにより、ケーブルと管
路あるいはケーブル同士の摩擦力を低減することが通常
行われている。In this laying method, in order to reduce the laying tension of the cable and extend the laying length, a lubricant is applied to the surface of the cable to reduce the frictional force between the cable and the pipeline or between the cables. That is usually done.
【０００４】しかしながら、このような方法では、布設
の都度、潤滑剤を塗布しなければならないうえ、牽引機
のベルトとケーブルとのスリップを防止するため、中間
牽引機の直前でケーブル表面に付着している潤滑剤を一
旦除去し、牽引機を通過した後に再度潤滑剤を塗布しな
ければならず、布設作業が煩雑であるという難点があっ
た。However, in such a method, a lubricant must be applied each time the cable is laid, and in order to prevent slippage between the belt and the cable of the traction machine, the lubricant adheres to the cable surface immediately before the intermediate traction machine. It is necessary to remove the lubricant once and to apply the lubricant again after passing through the traction machine, and there is a problem that the laying operation is complicated.
【０００５】また、光ファイバケーブルなどのケーブル
を布設する方法として、予め布設された管路に、空気の
圧力を利用してケーブルを搬送し布設する圧送布設方式
と称する方法が知られている。Further, as a method of laying a cable such as an optical fiber cable, there is known a method called a pressure feeding laying method in which a cable is conveyed and laid using a pressure of air in a previously laid pipe.
【０００６】この圧送方式では、ケーブルの円滑かつ長
距離の圧送を可能にするため、管路内部に予め潤滑剤を
塗布したり、あるいは潤滑剤をケーブル表面に塗布する
ことにより、ケーブルと管路内面との摩擦力を低減する
ことが通常行われている。In this pumping method, in order to enable the cable to be pumped smoothly and over a long distance, a lubricant is applied to the inside of the pipe in advance, or a lubricant is applied to the surface of the cable, so that the cable and the pipe are connected. It is common practice to reduce frictional forces with the inner surface.
【０００７】しかしながら、このような方法では、布設
の都度、潤滑剤を塗布しなければならず、布設作業が煩
雑になるうえ、1本の管路に複数本のケーブルを布設す
る多条布設に対応できないという問題があった。すなわ
ち、たとえば潤滑剤を塗布して布設した光ファイバケー
ブルが存在する管路に、潤滑剤を塗布したケーブルを新
たに布設しようとすると、既設済みのケーブル表面の潤
滑剤はすでに散逸しており、新設のケーブル表面に潤滑
剤を塗布しても大きな抵抗を受けずに円滑に布設するこ
とは困難であった。However, in such a method, a lubricant must be applied each time the cable is laid, which makes the laying operation complicated and increases the number of cables laid in a single conduit. There was a problem that it could not be handled. That is, for example, when a new cable with a lubricant is laid in a pipeline in which an optical fiber cable laid with a lubricant is laid, the lubricant on the existing cable surface has already been dissipated, Even if a lubricant was applied to the surface of the newly installed cable, it was difficult to smoothly lay the cable without receiving a large resistance.
【０００８】そこで、これらの問題に対処して、ケーブ
ル自身を低摩擦化することが検討され、低摩擦のケーブ
ル外被を備えた中間牽引用低摩擦外被ケーブルおよび先
端牽引用低摩擦外被ケーブルの開発が進められている。[0008] In view of the above, it has been studied to reduce the friction of the cable itself in order to address these problems. An intermediate traction low-friction coating cable and a tip traction low-friction coating provided with a low-friction cable coating. Cable development is underway.
【０００９】[0009]
【発明が解決しようとする課題】ところで、ケーブルの
摩擦力は、ケーブル外被の摩擦係数を小さくする程低減
される。しかしながら、摩擦係数を過度に小さくする
と、中間牽引用ケーブルの場合、ケーブルが牽引機のベ
ルトとスリップし、所定の牽引速度が維持されないおそ
れがある。また、ドラムからケーブルを繰り出す際に、
ケーブルの落ち込みや巻き崩れが発生し、ケーブルの円
滑な布設がかえって妨げられるおそれがある。また、先
端牽引用ケーブルの場合にも、同様に、ドラムからケー
ブルを繰り出す際に、ケーブルの落ち込みや巻き崩れが
発生し、ケーブルの円滑な布設がかえって妨げられるお
それがある。Incidentally, the frictional force of the cable is reduced as the coefficient of friction of the cable jacket is reduced. However, if the coefficient of friction is excessively reduced, the cable may slip with the belt of the traction machine in the case of the intermediate traction cable, and the predetermined traction speed may not be maintained. Also, when pulling out the cable from the drum,
There is a possibility that the cable may fall or collapse, which may hinder the smooth installation of the cable. Similarly, in the case of a cable towed at the tip, when the cable is pulled out from the drum, the cable may drop or collapse, which may hinder the smooth installation of the cable.
【００１０】一方、摩擦係数を大きくすると、ケーブル
の摩擦力が大きくなってしまい、従来の潤滑剤を塗布し
た場合のような布設張力の低減や布設長の確保は困難で
ある。On the other hand, when the friction coefficient is increased, the frictional force of the cable is increased, and it is difficult to reduce the installation tension and secure the installation length as in the case where a conventional lubricant is applied.
【００１１】本発明は、このような点に対処してなされ
たもので、潤滑剤を塗布することなく、従来の潤滑剤を
塗布した場合と同等もしくはそれ以上の布設張力の低減
および布設長の確保が可能で、しかも、牽引機でのスリ
ップや、ケーブル繰出し時のドラムでの落ち込みや巻き
崩れが発生することのない中間牽引用低摩擦外被ケーブ
ル、および潤滑剤を塗布することなく管路内に布設する
ことができ、しかも、ドラムからの円滑な繰り出しが損
なわれることのない先端牽引用低摩擦外被ケーブルを提
供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and the present invention has been made to reduce the installation tension and to reduce the installation length of the conventional or equivalent lubricant without applying the lubricant. A low-friction sheath cable for middle traction that can be secured and that does not cause slipping on the traction machine or dropping or collapse of the drum at the time of cable feeding, and pipeline without applying lubricant It is an object of the present invention to provide a low-friction sheath cable which can be laid inside and does not impair smooth feeding from a drum.
【００１２】[0012]
【課題を解決するための手段】上記目的を達成するた
め、本願の請求項１記載の発明の中間牽引用低摩擦外被
ケーブルは、最外層に低摩擦外被を備える中間牽引用低
摩擦外被ケーブルであって、前記低摩擦外被は、同一材
料同士の静摩擦係数（JIS K 7125）が0.18〜0.40で、動
摩擦係数（JIS K 7125）が0.15〜0.35となる材料からな
ることを特徴としている。In order to achieve the above object, an intermediate traction low friction jacket cable according to the invention of claim 1 of the present application comprises an intermediate traction low friction jacket having a low friction jacket on the outermost layer. Cable, wherein the low-friction jacket is made of a material having a static friction coefficient (JIS K 7125) of the same material of 0.18 to 0.40 and a dynamic friction coefficient (JIS K 7125) of 0.15 to 0.35. I have.
【００１３】上記構成の中間牽引用低摩擦外被ケーブル
においては、ケーブル中間を牽引機で牽引しつつ管路内
に布設する方式を適用して、ケーブルと管路あるいはケ
ーブル同士の摩擦力が、従来の潤滑剤を塗布した場合と
同等もしくはそれ以上に低減され、従来の潤滑剤を塗布
した場合と同等もしくはそれ以上の布設張力の低減およ
び布設長の確保が可能であるとともに、牽引機でのスリ
ップや、ケーブル繰出し時のドラムでの落ち込みや巻き
崩れの発生も防止される。[0013] In the intermediate traction low friction sheathed cable having the above structure, a method of laying in the pipeline while pulling the middle of the cable with a traction machine is applied to reduce the frictional force between the cable and the pipeline or between the cables. It can be reduced to the same level or more than the case where the conventional lubricant is applied, and it is possible to reduce the installation tension and secure the installation length equivalent to or higher than the case where the conventional lubricant is applied. The occurrence of slipping and dropping or collapse of the drum at the time of feeding the cable is also prevented.
【００１４】すなわち、従来の潤滑剤を塗布した場合と
同等もしくはそれ以上の摩擦力低減効果を得るための上
記静摩擦係数および動摩擦係数の上限値はそれぞれ0.40
および0.35であり、一方、牽引機でのスリップや、ケー
ブル繰出し時のドラムでの落ち込みや巻き崩れの発生も
防止することができる上記静摩擦係数および動摩擦係数
の下限値はそれぞれ0.18および0.15である。したがっ
て、上記静摩擦係数および動摩擦係数がそれぞれ0.18〜
0.40および0.15〜0.35の範囲とされた上記構成の低摩擦
外被ケーブルは、従来の潤滑剤を塗布した場合と同等も
しくはそれ以上の布設張力の低減および布設長の確保が
可能であるとともに、牽引機でのスリップや、ケーブル
繰出し時のドラムでの落ち込みや巻き崩れの発生も防止
される。That is, the upper limit of the static friction coefficient and the upper limit of the dynamic friction coefficient for obtaining a frictional force reduction effect equal to or greater than that obtained when a conventional lubricant is applied are 0.40, respectively.
And 0.35. On the other hand, the lower limit of the static friction coefficient and the lower limit of the dynamic friction coefficient which can prevent the slipping of the traction machine and the occurrence of the drop and the collapse of the drum at the time of feeding the cable are 0.18 and 0.15, respectively. Therefore, the coefficient of static friction and the coefficient of dynamic friction are 0.18 to 0.18 respectively.
The low-friction sheathed cable having the above configuration in the range of 0.40 and 0.15 to 0.35 can reduce the laying tension and secure the laying length equal to or greater than that of the case where the conventional lubricant is applied, and also has a traction The occurrence of slipping on the machine and dropping or collapse of the drum at the time of cable feeding is also prevented.
【００１５】本発明においては、請求項２に記載したよ
うに、前記低摩擦外被を、同一材料同士の静摩擦係数
（JIS K 7125）が0.18〜0.40で、動摩擦係数（JIS K 71
25）が0.15〜0.35となる難燃性材料で構成することがで
きる。これにより、ケーブルにさらに難燃性を具備させ
ることができる。[0015] In the present invention, as described in claim 2, the low-friction jacket is made of the same material having a static friction coefficient (JIS K 7125) of 0.18 to 0.40 and a dynamic friction coefficient (JIS K 71).
25) can be composed of a flame-retardant material with a value of 0.15 to 0.35. Thereby, the cable can be further provided with flame retardancy.
【００１６】また、上記目的を達成するため、本願の請
求項３記載の発明の先端牽引用低摩擦外被ケーブルは、
最外層に低摩擦外被を備える先端牽引用低摩擦外被ケー
ブルであって、前記低摩擦外被は、同一材料同士の静摩
擦係数（JIS K 7125）が0.08〜0.20で、動摩擦係数（JI
S K 7125）が0.05〜0.15となる材料からなることを特徴
としている。Further, in order to achieve the above object, a low-friction sheath cable with leading end according to the invention of claim 3 of the present application is:
A low-friction sheath cable having a low-friction sheath in an outermost layer, wherein the low-friction sheath has a static friction coefficient (JIS K 7125) of the same material of 0.08 to 0.20 and a dynamic friction coefficient (JI
SK 7125) is made of a material having a content of 0.05 to 0.15.
【００１７】上記構成の先端牽引用低摩擦外被ケーブル
においては、ケーブルと管路あるいはケーブル同士の摩
擦力が、従来の潤滑剤を塗布した場合と同等もしくはそ
れ以上に低減されるため、潤滑剤を塗布することなく布
設することができるうえ、ケーブル繰り出し時のドラム
でのケーブルの落ち込みや巻崩れの発生も防止される。[0017] In the low-friction sheath cable of the above configuration, the frictional force between the cable and the conduit or between the cables is reduced to a level equal to or greater than that when a conventional lubricant is applied. Can be laid without coating, and dropping of the cable at the drum and unwinding of the cable at the time of feeding the cable can be prevented.
【００１８】すなわち、従来の潤滑剤を塗布した場合と
同等もしくはそれ以上の摩擦力低減効果を得るための上
記静摩擦係数および動摩擦係数の上限値はそれぞれ0.20
および0.15であり、一方、ケーブル繰り出し時のドラム
での落ち込みや巻き崩れの発生を防止可能な上記静摩擦
係数および動摩擦係数の下限値はそれぞれ0.08および0.
05である。したがって、上記静摩擦係数および動摩擦係
数がそれぞれ0.08〜0.20および0.05〜0.15の範囲とされ
た上記構成の低摩擦外被ケーブルは、潤滑剤を塗布する
ことなく布設可能で、かつ、ケーブル繰り出し時のドラ
ムでの落ち込みや巻き崩れの発生も防止される。That is, the upper limit of the static friction coefficient and the upper limit of the dynamic friction coefficient for obtaining a frictional force reduction effect equal to or greater than that obtained by applying a conventional lubricant are 0.20 respectively.
And 0.15, on the other hand, the lower limits of the static friction coefficient and the dynamic friction coefficient capable of preventing the occurrence of dropping and collapse of the drum at the time of cable feeding are 0.08 and 0.
05. Therefore, the low-friction sheathed cable having the above-described configuration in which the static friction coefficient and the dynamic friction coefficient are in the range of 0.08 to 0.20 and 0.05 to 0.15, respectively, can be laid without applying a lubricant, and the drum when the cable is fed out. Also, the occurrence of a drop or a roll collapse is prevented.
【００１９】本発明においては、請求項４に記載したよ
うに、前記低摩擦外被を、同一材料同士の静摩擦係数
（JIS K 7125）が0.12〜0.20で、動摩擦係数（JIS K 71
25）が0.08〜0.15となる難燃性材料で構成することがで
きる。これにより、ケーブルにさらに難燃性を具備させ
ることができる。ここで、低摩擦外被を構成する材料
の、同一材料同士の静摩擦係数および動摩擦係数の下限
値が、それぞれ0.12および0.08とされているのは、難燃
性材料の場合にこれより低い静摩擦係数および動摩擦係
数を有する材料を得ることが事実上困難であるからであ
る。In the present invention, as described in claim 4, the low-friction coat is made of the same material having a static friction coefficient (JIS K 7125) of 0.12 to 0.20 and a dynamic friction coefficient (JIS K 71).
25) can be composed of a flame-retardant material with a value of 0.08 to 0.15. Thereby, the cable can be further provided with flame retardancy. Here, the lower limit values of the static friction coefficient and the dynamic friction coefficient of the same material of the materials constituting the low friction jacket are set to 0.12 and 0.08, respectively, in the case of the flame retardant material, the lower static friction coefficient. This is because it is practically difficult to obtain a material having a coefficient of dynamic friction.
【００２０】なお、本発明の先端牽引用低摩擦外被ケー
ブルには、空気の圧力を利用して布設されるものの他、
予め管路内に引き通された牽引用ロープの後端部と被布
設ケーブルの先端部とを布設管路の上流側で連結し、被
布設ケーブルを直接送り出す中間牽引機を用いることな
く、布設管路の下流側に設置した先端牽引機で牽引ロー
プを牽引することにより、管路内にケーブルを布設する
方法に用いられるケーブルも含まれる。この布設方法に
おいては、被布設ケーブルを牽引するのは先端牽引機で
あるが、先端牽引機のベルトで送り出されるのは牽引用
ロープであって、被布設ケーブルは先端牽引機のベルト
で送り出されることがないため、牽引機のベルトと被布
設ケーブルとのスリップを考慮する必要はない。The low-friction sheath cable towed at the tip of the present invention is not only laid by utilizing air pressure, but also
The rear end of the tow rope previously passed through the pipeline and the tip of the cable to be laid are connected upstream of the cable laying line, and the cable is laid without using an intermediate traction machine that directly sends out the cable to be laid. A cable used in a method of laying a cable in a pipeline by pulling a tow rope with a tip pulling machine installed downstream of the pipeline is also included. In this laying method, it is the tip traction machine that pulls the cable to be laid, but what is sent out by the belt of the tip traction machine is a tow rope, and the cable to be laid is sent out by the belt of the tip traction machine. There is no need to consider the slip between the traction machine belt and the laid cable.
【００２１】[0021]
【発明の実施の形態】まず、本願発明の中間牽引用低摩
擦外被ケーブルの実施の形態を図面を用いて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment of an intermediate traction low friction jacket cable according to the present invention will be described with reference to the drawings.
【００２２】図１は、本発明にかかる中間牽引機使用布
設方式対応の低摩擦外被光ファイバケーブルの一例を示
す断面図である。FIG. 1 is a sectional view showing an example of a low-friction sheathed optical fiber cable compatible with the laying system using an intermediate traction machine according to the present invention.
【００２３】図１において、１は、中心にＦＲＰや単鋼
線などからなるテンションメンバ２を有し、外周に複数
の溝３がＳ方向、Ｚ方向または所定の周期で反転するＳ
Ｚ方向のらせん状に設けられた高密度ポリエチレン製の
スロットロッドを示している。このスロットロッド１の
各溝３内には、複数枚の光ファイバテープ心線４、例え
ば 4心光ファイバテープ心線が積層されて収納されてい
る。In FIG. 1, reference numeral 1 denotes an S in which a tension member 2 made of FRP, a single steel wire, or the like is provided at the center, and a plurality of grooves 3 are provided on the outer periphery of the groove 3 in the S direction, the Z direction, or at a predetermined cycle.
3 shows a high-density polyethylene slot rod provided spirally in the Z direction. In each groove 3 of the slot rod 1, a plurality of optical fiber ribbons 4, for example, four-core optical fiber ribbons are stacked and stored.
【００２４】そして、このように光ファイバテープ心線
４が収納されたスロットロッド１の外周には、押えテー
プおよび／または吸水テープの巻回層５が設けられ、さ
らにその上に外被６が設けられている。A winding layer 5 of a holding tape and / or a water absorbing tape is provided on the outer periphery of the slot rod 1 in which the optical fiber ribbon 4 is accommodated, and a jacket 6 is further provided thereon. Is provided.
【００２５】外被６は、本発明の特徴をなすものであ
り、JIS K 7125に準拠して測定された同一材料同士の静
摩擦係数が0.18〜0.40で動摩擦係数が0.15〜0.35となる
材料により形成されている。The jacket 6 is a feature of the present invention and is formed of a material having a static friction coefficient of 0.18 to 0.40 and a dynamic friction coefficient of 0.15 to 0.35 between the same materials measured according to JIS K 7125. Have been.
【００２６】このような材料としては、ポリエチレンな
どの樹脂に、エルカ酸アミドやエチレンビスオレイン酸
アミドなどの滑剤を上記条件を満足するように配合した
ものが使用される。具体的には、エルカ酸アミドを500p
pm〜1000ppm の範囲で配合した低密度ポリエチレン樹
脂、エルカ酸アミドを100ppm〜300ppm の範囲で配合し
た直鎖状低密度ポリエチレン樹脂、エチレンビスオレイ
ン酸アミドを300ppm〜1500ppm の範囲で配合した低密度
ポリエチレン樹脂、エチレンビスオレイン酸アミドを30
0ppm〜1500ppmの範囲で配合した直鎖状低密度ポリエチ
レン樹脂などが例示される。また、難燃性が要求される
用途には、日本ユニカー社製のNUC9739やＪＰＯ社製のC
A1155B（以上、いずれも商品名）などの難燃化ポリエチ
レン樹脂にエルカ酸アミドを1500ppm〜5500ppm の範囲
で配合したものを使用することができる。As such a material, a material in which a lubricant such as erucamide or ethylenebisoleamide is blended with a resin such as polyethylene so as to satisfy the above conditions is used. Specifically, 500p of erucamide
Low density polyethylene resin blended in the range of pm to 1000 ppm, linear low density polyethylene resin blended in the range of 100 ppm to 300 ppm of erucamide, and low density polyethylene blended in the range of 300 ppm to 1500 ppm of ethylene bisoleic acid amide Resin, ethylene bis oleamide 30
Examples thereof include a linear low-density polyethylene resin blended in the range of 0 ppm to 1500 ppm. For applications requiring flame retardancy, NUC9739 manufactured by Nippon Unicar and CPO manufactured by JPO
A mixture of a flame retardant polyethylene resin such as A1155B (all of which are trade names) and erucamide in the range of 1500 ppm to 5500 ppm can be used.
【００２７】なお、JIS K 7125に準拠して測定された同
一材料同士の静摩擦係数および動摩擦係数のいずれか一
方でも前記範囲より小さいと、ケーブル繰り出し時にド
ラムでの落ち込みや巻き崩れが発生して、布設に支障を
きたすおそれがある。また、逆に、JIS K 7125に準拠し
て測定された同一材料同士の静摩擦係数および動摩擦係
数のいずれか一方でも前記範囲を超えると、ケーブルと
管路、あるいはケーブル同士の摩擦力が、従来の潤滑剤
を塗布した場合に比べて大きくなり、布設施工が困難に
なるおそれがある。If any one of the static friction coefficient and the dynamic friction coefficient of the same material measured in accordance with JIS K 7125 is smaller than the above range, dropping or collapse of the drum at the time of cable feeding out occurs. There is a risk that the installation will be hindered. Conversely, if any one of the static friction coefficient and the dynamic friction coefficient of the same material measured in accordance with JIS K 7125 exceeds the above range, the frictional force between the cable and the conduit, or between the cables, is reduced to the conventional value. The size may be larger than when a lubricant is applied, which may make installation work difficult.
【００２８】このように構成される低摩擦外被光ファイ
バケーブルにおいては、ケーブルと管路あるいはケーブ
ル同士の摩擦力が、従来の潤滑剤を塗布した場合と同等
もしくはそれ以上に低減されるため、潤滑剤を塗布する
ことなく円滑な布設を行うことができる。したがって、
布設時の潤滑剤塗布作業や、中間牽引機の直前で一旦潤
滑剤を除去し、中間牽引機通過後再度塗布するといった
煩雑な作業が不要となり、布設作業の作業性が向上す
る。しかも、牽引機のベルトとの間でスリップを生じた
り、ケーブルを繰り出す際に、ドラムでケーブルが落ち
込んだり巻き崩れが生ずることもない。In the low-friction sheathed optical fiber cable constructed as described above, the frictional force between the cable and the conduit or between the cables is reduced to a level equal to or greater than that when a conventional lubricant is applied. Smooth installation can be performed without applying a lubricant. Therefore,
This eliminates the need for a troublesome work of applying the lubricant at the time of laying or removing the lubricant immediately before the intermediate traction machine and applying the lubricant again after passing through the intermediate traction machine, thereby improving the workability of the laying work. In addition, there is no occurrence of slip between the belt of the towing machine and no cable dropping or winding collapse at the drum when the cable is fed out.
【００２９】なお、上記の例は、本発明を、いわゆるス
ペーサ型光ファイバケーブルに適用した例であるが、本
発明はこのような例に限定されるものではなく、その他
の各種光ファイバケーブル、電力ケーブル、通信ケーブ
ルなどにも適用可能である。Although the above example is an example in which the present invention is applied to a so-called spacer type optical fiber cable, the present invention is not limited to such an example, and other various optical fiber cables, It is also applicable to power cables, communication cables, and the like.
【００３０】次に、本願発明の先端牽引用低摩擦外被ケ
ーブルの実施の形態を図面を用いて説明する。Next, an embodiment of a low-friction sheath cable for leading end traction according to the present invention will be described with reference to the drawings.
【００３１】図２は、本発明にかかる圧送布設方式対応
の低摩擦外被光ファイバケーブルの一例を示す断面図で
ある。FIG. 2 is a cross-sectional view showing an example of a low-friction sheathed optical fiber cable compatible with the pressure feeding installation system according to the present invention.
【００３２】図２において、１１は、中心にＦＲＰや単
鋼線などからなるテンションメンバ１２を有し、外周に
複数の溝３がＳ方向、Ｚ方向または所定の周期で反転す
るＳＺ方向のらせん状に設けられた高密度ポリエチレン
製のスロットロッドを示している。このスロットロッド
１の各溝１３内には、複数枚の光ファイバテープ心線１
４、例えば 4心光ファイバテープ心線が積層されて収納
されている。In FIG. 2, reference numeral 11 denotes a spiral member having a tension member 12 made of FRP or single steel wire at the center, and a plurality of grooves 3 on the outer periphery in the S direction, the Z direction, or the SZ direction in which the grooves 3 are reversed at a predetermined period. 1 shows a slot rod made of high-density polyethylene provided in a shape. In each groove 13 of the slot rod 1, a plurality of optical fiber ribbons 1 are provided.
4, for example, four-core optical fiber ribbons are stacked and stored.
【００３３】そして、このように光ファイバテープ心線
１４が収納されたスロットロッド１１の外周には、押え
テープおよび／または吸水テープの巻回層１５が設けら
れ、さらにその上に外被１６が設けられている。A winding layer 15 of a holding tape and / or a water-absorbing tape is provided on the outer periphery of the slot rod 11 in which the optical fiber ribbon 14 is accommodated, and a jacket 16 is further provided thereon. Is provided.
【００３４】外被１６は、本発明の特徴をなすものであ
り、JIS K 7125に準拠して測定された同一材料同士の静
摩擦係数（JIS K 7125）が0.08〜0.20で、動摩擦係数
（JISK 7125）が0.05〜0.15となる材料により形成され
ている。The jacket 16 is a feature of the present invention, and has a static friction coefficient (JIS K 7125) of 0.08 to 0.20 between the same materials measured according to JIS K 7125, and a dynamic friction coefficient (JIS K 7125). ) Is made of a material having a value of 0.05 to 0.15.
【００３５】このような材料としては、ポリエチレンな
どの樹脂に、エルカ酸アミドやエチレンビスオレイン酸
アミドなどの滑剤を上記条件を満足するように配合した
ものが使用される。具体的には、エルカ酸アミドを 100
0ppm〜2500ppm の範囲で配合した低密度ポリエチレン樹
脂、エルカ酸アミドを200ppm〜500ppmの範囲で配合した
直鎖状低密度ポリエチレン樹脂などが例示される。ま
た、難燃性が要求される用途には、日本ユニカー社製の
NUC9739やＪＰＯ社製のCA1155B（以上、いずれも商品
名）などの難燃化ポリエチレン樹脂にエルカ酸アミドを
3000ppm〜6000ppmの範囲で配合したものを使用すること
ができる。As such a material, a material obtained by blending a lubricant such as erucamide or ethylenebisoleic acid with a resin such as polyethylene so as to satisfy the above conditions is used. Specifically, erucamide was added to 100
Examples thereof include a low-density polyethylene resin blended in the range of 0 ppm to 2500 ppm and a linear low-density polyethylene resin blended of erucamide in the range of 200 ppm to 500 ppm. For applications that require flame retardancy, the products manufactured by Nippon Unicar
Erucamide on flame-retardant polyethylene resins such as NUC9739 and CA1155B (both trade names) manufactured by JPO
Those blended in the range of 3000 ppm to 6000 ppm can be used.
【００３６】JIS K 7125に準拠して測定された同一材料
同士の静摩擦係数および動摩擦係数のいずれか一方でも
前記範囲より小さいと、ケーブル繰り出し時にドラムで
の落ち込みや巻き崩れが発生して、布設に支障をきたす
おそれがある。また、逆に、JIS K 7125に準拠して測定
された同一材料同士の静摩擦係数および動摩擦係数のい
ずれかでも前記範囲を超えると、ケーブルと管路、ある
いはケーブル同士の摩擦力が、従来の潤滑剤を塗布した
場合に比べて大きくなり、圧送距離が短くなるおそれが
ある。If at least one of the static friction coefficient and the dynamic friction coefficient of the same material measured in accordance with JIS K 7125 is smaller than the above range, a drop or a collapse of the drum occurs at the time of feeding the cable, and the cable is not laid. It may cause trouble. Conversely, if any one of the static friction coefficient and the dynamic friction coefficient of the same material measured in accordance with JIS K 7125 exceeds the above range, the frictional force between the cable and the pipeline, or between the cables, is reduced by the conventional lubrication. As compared with the case where the agent is applied, the pressure feeding distance may be shortened.
【００３７】なお、難燃性材料の場合、滑剤を多量に配
合するなどしても上記静摩擦係数および動摩擦係数がそ
れぞれ0.12および0.08より小さい材料を得ることは困難
である。したがって、難燃性材料を使用する場合、同一
材料同士の静摩擦係数（JISK 7125）が0.12〜0.20で、
動摩擦係数（JIS K 7125）が0.08〜0.15となる材料が選
択される。In the case of a flame-retardant material, it is difficult to obtain a material whose static friction coefficient and dynamic friction coefficient are smaller than 0.12 and 0.08, respectively, even if a large amount of a lubricant is added. Therefore, when using flame-retardant materials, the static friction coefficient (JISK 7125) between the same materials is 0.12 to 0.20,
A material having a dynamic friction coefficient (JIS K 7125) of 0.08 to 0.15 is selected.
【００３８】このように構成される低摩擦外被ケーブル
においては、ケーブルと管路あるいはケーブル同士の摩
擦力が、従来の潤滑剤を塗布した場合と同等もしくはそ
れ以上に低減されるため、潤滑剤を塗布することなく、
潤滑剤を塗布した場合と同等もしくはそれ以上のの距離
を布設することができる。したがって、布設時の潤滑剤
塗布作業を省略することができ、布設作業の作業性が向
上する。また、摩擦力の低下は長期間安定して保持され
るため、従来のように、潤滑剤が散逸して低摩擦効果が
失われることもなく、多条布設が可能となる。しかも、
ケーブルを繰り出す際に、ドラムでケーブルが落ち込ん
だり巻き崩れが生ずることもない。In the low-friction sheathed cable constructed as described above, the frictional force between the cable and the conduit or between the cables is reduced to a level equal to or greater than that when a conventional lubricant is applied. Without applying
A distance equal to or longer than the case where the lubricant is applied can be laid. Therefore, it is possible to omit the lubricant application work at the time of laying, and to improve the workability of the laying work. In addition, since the decrease in frictional force is stably maintained for a long period of time, the lubricant can be dissipated and the low frictional effect is not lost as in the related art, and multi-layer laying can be performed. Moreover,
When the cable is paid out, the cable does not drop or collapse on the drum.
【００３９】なお、上記の例は、本発明を、いわゆる圧
送布設方式対応のケーブルに適用した例であるが、本発
明はこのような例に限定されるものではなく、中間牽引
機を使用せず、ケーブル先端側に接続された牽引ロープ
のみが牽引機を通過する布設方式対応の各種ケーブルに
広く適用可能で、上記と同様の効果を得ることができ
る。Although the above-described example is an example in which the present invention is applied to a cable compatible with a so-called pressure laying system, the present invention is not limited to such an example, and uses an intermediate traction machine. Instead, only the towing rope connected to the cable tip side can be widely applied to various cables compatible with the laying system that passes through the towing machine, and the same effects as above can be obtained.
【００４０】[0040]
【実施例】次に、本発明を実施例および比較例によりさ
らに具体的に説明する。Next, the present invention will be described more specifically with reference to examples and comparative examples.
【００４１】実施例１ 中心に 2.6mmφの単鋼線からなるテンションメンバを有
し、外周にＳ撚りに15本の溝が設けられた外径15.8mmの
ポリエチレン製のスロットロッドの各溝に、 4心光ファ
イバテープ心線を 5枚積層して収納し、その外周に吸水
テープを巻き付けた後、その上に、滑剤としてエルカ酸
アミド 500ppm を配合した低密度ポリエチレン樹脂を、
1.5mmの厚さに押出被覆して外被を形成した。得られた
光ファイバケーブルの外径は約19mm、質量は約0.29kg/m
であった。Example 1 Each groove of a polyethylene slot rod having an outer diameter of 15.8 mm and having a tension member made of a single steel wire of 2.6 mmφ at the center and having 15 grooves in the outer periphery with S twists was provided. After laminating and storing five four-core optical fiber tape cores and wrapping a water-absorbing tape around the outer periphery, a low-density polyethylene resin containing 500 ppm of erucamide as a lubricant is placed on top of it.
The outer cover was formed by extrusion coating to a thickness of 1.5 mm. The outer diameter of the obtained optical fiber cable is about 19 mm and the mass is about 0.29 kg / m
Met.
【００４２】実施例２〜１２、比較例１〜６ 外被の形成材料を表１および表２に示すように変えた以
外は、実施例１と同様にして光ファイバケーブルを製造
した。Examples 2 to 12 and Comparative Examples 1 to 6 Optical fiber cables were manufactured in the same manner as in Example 1 except that the materials for forming the jacket were changed as shown in Tables 1 and 2.
【００４３】実施例１３ 中心に 2.6mmφの単鋼線からなるテンションメンバを有
し、外周にＳ撚りに15本の溝が設けられた外径15.8mmの
ポリエチレン製のスロットロッドの各溝に、 4心光ファ
イバテープ心線を 5枚積層して収納し、その外周に吸水
テープを巻き付けた後、その上に、滑剤としてエルカ酸
アミド1500ppm を配合した難燃化ポリエチレン樹脂を、
2.2mmの厚さに押出被覆して外被を形成した。得られた
光ファイバケーブルの外径は約21.4mm、質量は約0.33kg
/mであった。Example 13 Each groove of a slot rod made of polyethylene having a diameter of 15.8 mm and having an outer diameter of 15 in which a tension member made of a single steel wire having a diameter of 2.6 mm was provided at the center and having 15 grooves in the outer periphery with S twist was provided. After laminating and storing five four-core optical fiber tape cores and wrapping a water-absorbing tape around the outer circumference, a flame-retardant polyethylene resin blended with 1500 ppm of erucamide as a lubricant is placed on it.
The jacket was extruded to a thickness of 2.2 mm to form a jacket. The outer diameter of the obtained optical fiber cable is about 21.4 mm and the mass is about 0.33 kg
/ m.
【００４４】実施例１４〜２０、比較例７〜１０ 外被の形成材料を表３および表４に示すように変えた以
外は、実施例１３と同様にして光ファイバケーブルを製
造した。Examples 14 to 20 and Comparative Examples 7 to 10 Optical fiber cables were manufactured in the same manner as in Example 13 except that the materials for forming the jacket were changed as shown in Tables 3 and 4.
【００４５】上記実施例および比較例で得られた各光フ
ァイバケーブルについて、実際の布設を模擬した牽引布
設試験を行い、その特性を評価した。結果を、外被の常
温（23℃）における静摩擦係数および動摩擦係数ととも
に、表１〜４に併せ示す。なお、静摩擦係数および動摩
擦係数は、ケーブルとは別に外被と同じ材料を用いて作
製したシートについて JIS K 7125 に準拠して測定した
値である。Each of the optical fiber cables obtained in the above Examples and Comparative Examples was subjected to a pulling laying test simulating actual laying, and its characteristics were evaluated. The results are shown in Tables 1 to 4 together with the coefficient of static friction and the coefficient of dynamic friction at room temperature (23 ° C.) of the jacket. The coefficient of static friction and the coefficient of dynamic friction are values measured in accordance with JIS K 7125 for a sheet prepared using the same material as the jacket separately from the cable.
【００４６】[0046]
【表１】 [Table 1]
【表２】 [Table 2]
【表３】 [Table 3]
【表４】 これらの結果からも明らかなように、本発明にかかる光
ファイバケーブルは、潤滑剤の塗布を必要としないう
え、ドラムでの落ち込みや巻き崩れが発生することもな
く、また、牽引機のベルトとの間でスリップが生ずるこ
ともなく、十分に実用可能な中間牽引用低摩擦外被ケー
ブルであることが確認された。[Table 4] As is evident from these results, the optical fiber cable according to the present invention does not require the application of a lubricant, does not cause dropping or collapse in the drum, and has the same structure as the belt of the traction machine. No slippage occurred between them, and it was confirmed that the cable was a medium-traction low-friction sheath cable that could be used sufficiently.
【００４７】実施例２１ 中心に 2.6mmφの単鋼線からなるテンションメンバを有
し、外周にＳ撚りに15本の溝が設けられた外径15.8mmの
ポリエチレン製のスロットロッドの各溝に、 4心光ファ
イバテープ心線を 5枚積層して収納し、その外周に吸水
テープを巻き付けた後、その上に、滑剤としてエルカ酸
アミド 500ppm を配合した低密度ポリエチレン樹脂を、
1.5mmの厚さに押出被覆して外被を形成した。得られた
光ファイバケーブルの外径は約19mm、質量は約0.29kg/m
であった。Example 21 Each groove of a polyethylene slot rod having an outer diameter of 15.8 mm and having a tension member made of a single steel wire of 2.6 mmφ at the center and having 15 grooves in the outer periphery with S twists was provided. After laminating and storing five four-core optical fiber tape cores and wrapping a water-absorbing tape around the outer periphery, a low-density polyethylene resin containing 500 ppm of erucamide as a lubricant is placed on top of it.
The outer cover was formed by extrusion coating to a thickness of 1.5 mm. The outer diameter of the obtained optical fiber cable is about 19 mm and the mass is about 0.29 kg / m
Met.
【００４８】実施例２２〜２４、比較例１１〜１４ 外被の形成材料を表５に示すように変えた以外は、実施
例２１と同様にして光ファイバケーブルを製造した。Examples 22 to 24 and Comparative Examples 11 to 14 Optical fiber cables were manufactured in the same manner as in Example 21 except that the material for forming the jacket was changed as shown in Table 5.
【００４９】実施例２５ 中心に 2.6mmφの単鋼線からなるテンションメンバを有
し、外周にＳ撚りに15本の溝が設けられた外径15.8mmの
ポリエチレン製のスロットロッドの各溝に、 4心光ファ
イバテープ心線を 5枚積層して収納し、その外周に吸水
テープを巻き付けた後、その上に、滑剤としてエルカ酸
アミド2500ppm を配合した難燃化ポリエチレン樹脂を、
2.2mmの厚さに押出被覆して外被を形成した。得られた
光ファイバケーブルの外径は約21.4mm、質量は約0.33kg
/mであった。Example 25 Each slot of a polyethylene slot rod having an outer diameter of 15.8 mm and having a tension member made of a single steel wire of 2.6 mmφ at the center and having 15 grooves in the outer periphery with S twists was provided. After laminating and storing five four-core optical fiber tape core wires and wrapping a water-absorbing tape around the outer circumference, a flame-retardant polyethylene resin containing 2500 ppm of erucamide as a lubricant is placed on it.
The jacket was extruded to a thickness of 2.2 mm to form a jacket. The outer diameter of the obtained optical fiber cable is about 21.4 mm and the mass is about 0.33 kg
/ m.
【００５０】実施例２６〜２８、比較例１５〜１８ 外被の形成材料を表６に示すように変えた以外は、実施
例２５と同様にして光ファイバケーブルを製造した。Examples 26 to 28 and Comparative Examples 15 to 18 Optical fiber cables were manufactured in the same manner as in Example 25, except that the material for forming the jacket was changed as shown in Table 6.
【００５１】上記実施例および比較例で得られた各光フ
ァイバケーブルの先端に牽引ロープを接続して牽引機で
牽引し、布設時の張力増加の有無、長尺布設性およびド
ラムでのケーブルの落込みあるいは巻き崩れの発生の有
無を調べた。結果を、外被の常温（23℃）における静摩
擦係数および動摩擦係数とともに、表５、６に併せ示
す。なお、長尺布設性は、従来のケーブル表面に潤滑剤
を塗布して布設した場合と同等以上の場合に良好、劣る
場合に不良と判定したものである。また、静摩擦係数お
よび動摩擦係数は、ケーブルとは別に外被と同じ材料を
用いて作製したシートについて JIS K 7125 に準拠して
測定した値である。A pulling rope is connected to the end of each of the optical fiber cables obtained in the above Examples and Comparative Examples, and pulled by a pulling machine. The presence or absence of a drop or a collapse was examined. The results are shown in Tables 5 and 6, together with the coefficient of static friction and the coefficient of dynamic friction at room temperature (23 ° C.). The long layability was determined to be good if it was equal to or greater than the case where the conventional cable surface was coated with a lubricant and laid, and poor if it was inferior. Further, the static friction coefficient and the dynamic friction coefficient are values measured in accordance with JIS K 7125 for a sheet manufactured using the same material as the jacket separately from the cable.
【００５２】[0052]
【表５】 [Table 5]
【表６】 これらの結果からも明らかなように、本発明にかかる光
ファイバケーブルは、潤滑剤の塗布を必要としないう
え、ドラムでの落ち込みや巻き崩れが発生することもな
く、十分に実用可能な先端牽引用低摩擦外被ケーブルで
あることが確認された。[Table 6] As is apparent from these results, the optical fiber cable according to the present invention does not require the application of a lubricant, does not cause dropping or collapse of the drum, and is sufficiently practical for practical use. It was confirmed that the cable was a low-friction sheath cable.
【００５３】[0053]
【発明の効果】以上説明したように、本発明にかかる中
間牽引用低摩擦外被ケーブルは、潤滑剤を塗布すること
なく、また、中間牽引機でのスリップや、ケーブル繰り
出し時のドラムでの落ち込みや巻き崩れを生じさせるこ
となく、布設することができる。As described above, the intermediate traction low-friction sheath cable according to the present invention can be used without applying a lubricant, without slipping on the intermediate traction machine, or on the drum when feeding the cable. It can be laid without causing a drop or a collapse.
【００５４】また、本発明にかかる先端牽引用低摩擦外
被ケーブルは、潤滑剤を塗布することなく布設すること
ができ、多条布設にも十分対応可能であるうえ、ケーブ
ルを繰り出す際のドラムでの落ち込みや巻き崩れが生じ
ることもない。Also, the low-friction sheath cable towed to the tip according to the present invention can be laid without applying a lubricant, and can cope with multi-layer laying. There is no drop or roll collapse.
【図１】本発明にかかる中間牽引用低摩擦外被光ファイ
バケーブルの一例を示す断面図。FIG. 1 is a cross-sectional view showing an example of an intermediate drawing low friction sheathed optical fiber cable according to the present invention.
【図２】本発明にかかる先端牽引用低摩擦外被光ファイ
バケーブルの一例を示す断面図。FIG. 2 is a cross-sectional view showing an example of a low-friction sheathed optical fiber cable drawn at the tip according to the present invention.
１、１１………スロットロッド ２、１２………テンションメンバ ４、１４………光ファイバテープ心線 ６、１６………外被 1, 11 Slot rod 2, 12 Tension member 4, 14 Optical fiber ribbon 6, 16
Claims (4)
低摩擦外被ケーブルであって、 前記低摩擦外被は、同一材料同士の静摩擦係数（JIS K
7125）が0.18〜0.40で、動摩擦係数（JIS K 7125）が0.
15〜0.35となる材料からなることを特徴とする中間牽引
用低摩擦外被ケーブル。1. An intermediate traction low-friction jacket cable having a low-friction jacket on an outermost layer, wherein the low-friction jacket is a coefficient of static friction between same materials (JIS K
7125) is 0.18 to 0.40, and the coefficient of dynamic friction (JIS K 7125) is 0.
An intermediate traction low-friction outer cable, which is made of a material having a thickness of 15 to 0.35.
低摩擦外被ケーブルであって、 前記低摩擦外被は、同一材料同士の静摩擦係数（JIS K
7125）が0.18〜0.40で、動摩擦係数（JIS K 7125）が0.
15〜0.35となる難燃性材料からなることを特徴とする中
間牽引用低摩擦外被ケーブル。2. An intermediate traction low-friction jacket cable having a low-friction jacket in an outermost layer, wherein the low-friction jacket is a coefficient of static friction (JIS K) between the same materials.
7125) is 0.18 to 0.40, and the coefficient of dynamic friction (JIS K 7125) is 0.
An intermediate traction low-friction sheath cable comprising a flame-retardant material of 15 to 0.35.
低摩擦外被ケーブルであって、 前記低摩擦外被は、同一材料同士の静摩擦係数（JIS K
7125）が0.08〜0.20で、動摩擦係数（JIS K 7125）が0.
05〜0.15となる材料からなることを特徴とする先端牽引
用低摩擦外被ケーブル。3. A low-friction outer cable having a low-friction jacket on its outermost layer, wherein the low-friction jacket has a coefficient of static friction (JIS K) between the same materials.
7125) is 0.08 to 0.20, and the dynamic friction coefficient (JIS K 7125) is 0.
A low-friction sheath cable for leading end traction, characterized by being made of a material having a content of 05 to 0.15.
低摩擦外被ケーブルであって、 前記低摩擦外被は、同一材料同士の静摩擦係数（JIS K
7125）が0.12〜0.20で、動摩擦係数（JIS K 7125）が0.
08〜0.15となる難燃性材料からなることを特徴とする先
端牽引用低摩擦外被ケーブル。4. A cable having a low-friction sheath with a low-friction sheath on the outermost layer, wherein the low-friction sheath has a coefficient of static friction (JIS K) between the same materials.
7125) is 0.12 to 0.20, and the coefficient of dynamic friction (JIS K 7125) is 0.
A low-friction sheath cable with a towed tip, characterized in that it is made of a flame-retardant material of 08 to 0.15.
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|---|---|---|---|
| JP2000163767A JP3970499B2 (en) | 1999-06-01 | 2000-05-31 | Low friction jacket cable for intermediate traction and tip traction |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15426399 | 1999-06-01 | ||
| JP15426499 | 1999-06-01 | ||
| JP11-154264 | 1999-06-01 | ||
| JP11-154263 | 1999-06-01 | ||
| JP2000163767A JP3970499B2 (en) | 1999-06-01 | 2000-05-31 | Low friction jacket cable for intermediate traction and tip traction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001052536A true JP2001052536A (en) | 2001-02-23 |
| JP3970499B2 JP3970499B2 (en) | 2007-09-05 |
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ID=27320631
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000163767A Expired - Lifetime JP3970499B2 (en) | 1999-06-01 | 2000-05-31 | Low friction jacket cable for intermediate traction and tip traction |
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|---|---|---|---|---|
| JP2007256978A (en) * | 2007-06-04 | 2007-10-04 | Furukawa Electric Co Ltd:The | Method of manufacturing optical fiber |
| JP2008180827A (en) * | 2007-01-24 | 2008-08-07 | Furukawa Electric Co Ltd:The | Optical fiber cable |
| JP2009128382A (en) * | 2007-11-19 | 2009-06-11 | Nippon Telegr & Teleph Corp <Ntt> | Optical fiber cable and information wiring system |
| JP2012083423A (en) * | 2010-10-07 | 2012-04-26 | Sumitomo Electric Ind Ltd | Optical cable |
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| JP2013251270A (en) * | 2005-05-24 | 2013-12-12 | Southwire Co | Electrical cable having surface with reduced coefficient of friction |
| JP2008180827A (en) * | 2007-01-24 | 2008-08-07 | Furukawa Electric Co Ltd:The | Optical fiber cable |
| JP2007256978A (en) * | 2007-06-04 | 2007-10-04 | Furukawa Electric Co Ltd:The | Method of manufacturing optical fiber |
| JP2009128382A (en) * | 2007-11-19 | 2009-06-11 | Nippon Telegr & Teleph Corp <Ntt> | Optical fiber cable and information wiring system |
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| JP2012083423A (en) * | 2010-10-07 | 2012-04-26 | Sumitomo Electric Ind Ltd | Optical cable |
| US10443009B2 (en) | 2013-12-04 | 2019-10-15 | Corning Research & Development Corporation | Aqueous low friction coating for telecommunication cables |
| US10000716B2 (en) | 2013-12-04 | 2018-06-19 | 3M Innovative Properties Company | Aqueous low friction coating for telecommunication cables |
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