JPS6039610A - Water shielding type optical fiber cable - Google Patents
Water shielding type optical fiber cableInfo
- Publication number
- JPS6039610A JPS6039610A JP58147793A JP14779383A JPS6039610A JP S6039610 A JPS6039610 A JP S6039610A JP 58147793 A JP58147793 A JP 58147793A JP 14779383 A JP14779383 A JP 14779383A JP S6039610 A JPS6039610 A JP S6039610A
- Authority
- JP
- Japan
- Prior art keywords
- grease
- water
- optical fiber
- packing material
- packing
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
- H01B7/288—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable using hygroscopic material or material swelling in the presence of liquid
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Insulated Conductors (AREA)
Abstract
Description
【発明の詳細な説明】
〔技術分野〕
本発明は、走水防止用充填物を用いた遮水形光ファイバ
ケーブルに関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a water-shielded optical fiber cable using a filler for preventing water running.
遮水層と該遣水層の内側に存在する多数本の光ファイバ
との間の空間に走水防止用充填物を充填した構造の遮水
形光ファイバケーブルは従来公知である。従来使用の走
水防止用充填物は、高温で溶融して充填使用され常温に
もたらされたとき固化するものであるため、充填物の冷
却にともなう体積収縮のために亀裂が生じて走水防止性
能が低、下する、上記の収縮によって光ファイバにマイ
クロベンドが生じる、あるいは、固化した充填物をケー
ブルから除去するのが困 離であるために高度の精密さ
が要求される光フアイバケーブルの端末加工において種
々の不都合か生じるなどの問題がある。A water-shielding optical fiber cable having a structure in which the space between a water-shielding layer and a large number of optical fibers present inside the water-shedding layer is filled with a filler for preventing water running has been known. Conventionally used fillers to prevent water running are melted at high temperatures, solidified when brought to room temperature, and cracks occur due to volumetric shrinkage as the filler cools, resulting in water running. Fiber optic cables that require a high degree of precision due to low or degraded protection performance, microbends in the optical fiber caused by the above shrinkage, or difficulty in removing solidified filler from the cable. There are problems such as various inconveniences that occur during terminal processing.
本発明は、上記の諸問題のない新規な遮水形光ファイバ
ケーブルを提案するものであって、走水防止用充填物を
充填した遮水形光ファイバケーブルにおいて、走水防止
用充填物が、ＡＳＴＭ Ｄ−２１７で測定した常温での
混和ちょ５度が８５〜４７５であることを特徴とするも
のである。The present invention proposes a new water-shielded optical fiber cable that does not have the above-mentioned problems. It is characterized by a miscibility level of 85 to 475 at room temperature as measured by ASTM D-217.
〔実施例にもとず〈本発明の一層詳細な説明〕付図は本
発明の実施例の断面図であって、有機高分子繊維、たと
えばケブラー、ＦＲＰや金属線などからなるテンション
メンバー１１を中に６本の光ファイバ１２−を集合し、
更にその上に抑え巻きテープ１３を巻回してなる光フア
イバ６芯ユニツト１の８ユニツトをゴム、プラスチック
又は繊維補強ゴム、プラスチックのロッド、金属線、有
機高分子繊維などからなるテンンヨンメンハー２゛の周
りに集合し、更にその上にアルミニウムや鉛などの金属
のラミネートテープな縦添えして形成してなる遣水層３
を設け、該ラミネートテープの接着剤層と接着した状態
でポリエチレン、ポリ塩ビニルなどのシース材料からな
る押出保護シース層４が施され、遮水縦添え層３の内側
空間には走水防止用充填物５が充填されている。[Based on the Examples, More Detailed Description of the Present Invention] The accompanying drawings are cross-sectional views of examples of the present invention, in which a tension member 11 made of organic polymer fibers, such as Kevlar, FRP, or metal wire, is inserted. Six optical fibers 12- are collected at
Furthermore, eight units of the six-core optical fiber unit 1, which is formed by winding a restraining tape 13 thereon, are attached to a tension member 2 made of rubber, plastic or fiber-reinforced rubber, plastic rod, metal wire, organic polymer fiber, etc. The water distribution layer 3 is formed by gathering around ゛ and further vertically attaching a laminated tape of metal such as aluminum or lead on top of it.
is provided, and an extruded protective sheath layer 4 made of a sheath material such as polyethylene or polyvinyl chloride is applied in a state in which it is adhered to the adhesive layer of the laminate tape. Filler 5 is filled.
本発明においては、充填物５として、ＡＳＴＭＩ）−２
１７で測定した常温での混和ちょう度が、８−５〜４７
５のものが用いられる。混和ちょう度が８５より小さい
ものは、かたすぎてケーブルへの充填作業のために高温
度に加熱して流動性を増大させる必要があり、か＼る加
熱は必然的に前記した忌むべき大きな体積収縮を惹起さ
せる冷却を伴うこととなる。一方、混和ちょう度が４７
５より大きいものは、゛流動性か過大のためにケーブル
を垂直や傾斜して布設した場合ケーブル内で流下して下
位のケーブル部分の内部にシース破損の原因となり得る
水頭圧を生ぜしめたり、上位のケーブル部分内に走水防
止上問題となる空隙を生ぜしめたりする。従って、充填
物５として常温での混和ちょう度が１５０〜４５０のも
の、特に２００〜４００のものが好ましい。In the present invention, as the filling 5, ASTMI)-2
The worked penetration at room temperature measured in 17 is 8-5 to 47.
5 is used. If the worked penetration is less than 85, it is too hard and must be heated to a high temperature to increase fluidity in order to fill the cable into the cable, and such heating inevitably results in the above-mentioned abhorrent high temperature. This involves cooling that causes volumetric contraction. On the other hand, the worked penetration was 47
Anything larger than 5 is ``fluid or excessive and may flow down within the cable when the cable is laid vertically or at an angle, creating a head pressure inside the lower cable section that can cause sheath failure; This may create voids in the upper cable section that may cause problems in preventing water running. Therefore, it is preferable that the filler 5 has a worked penetration of 150 to 450, particularly 200 to 400, at room temperature.
上記の混和ちょう度を有し、かつ走水防止作用を有する
限り化学的組成、構造の如何を問わず、種々のものが用
いられる。たとえば、上記ちょう度を有する以下のグリ
ス類が例示できる。Various materials can be used irrespective of their chemical composition and structure as long as they have the above-mentioned worked penetration and have a water running prevention effect. For example, the following greases having the above-mentioned consistency can be exemplified.
カルシウム石ケングリース、アルミニウム宕ケングリー
ス、リチウム石ケングリース、複合カルシウム石ケング
リース、複合アルミニウム石ケングリース、ベントング
リース、ポリウレアグリース等である。These include calcium soap grease, aluminum soap grease, lithium soap grease, composite calcium soap grease, composite aluminum soap grease, benton grease, and polyurea grease.
コア径５０μｍ１クラｔソド径１２５μ風のＧＩ形光フ
ァイバ素線にナイロンジャケットを施した光フアイバ４
８本を有する付図の構造のアルミラミネート遣水層付き
光フアイバケーブル（外径２２ ｖａｎ ）を製造した
。このうちの実施例のケーブルには走水防止用充填物と
して常温での混和ちょう度が・３２０の日本グリース社
製カルシウム石ケングリースを用いて、該グリスを常温
で充填した。これに対して比較例のケーブルには、走水
防止用充填物として従来使用の米国ウイットコ社製のす
５Ｂを用いた。該充填物は常温で固体であるので１０５
℃に加熱溶融して線間に圧入充填し、常温下で放冷した
。Optical fiber 4 made of a GI type optical fiber with a core diameter of 50 μm and a core diameter of 125 μm and a nylon jacket.
Eight optical fiber cables (outer diameter 22 van ) with an aluminum laminate water layer having the structure shown in the accompanying drawings were manufactured. Among these, the cable of the example was filled with calcium soap grease manufactured by Nippon Grease Co., Ltd. having a worked penetration of -320 at room temperature as a filler for preventing running water. On the other hand, in the cable of the comparative example, Nosu 5B manufactured by Whitco, Inc., which has been used in the past, was used as a filler for preventing water running. Since the filling is solid at room temperature, 105
It was melted by heating to ℃ and then press-fitted between the wires and allowed to cool at room temperature.
上記両ケーブルについての性能を下表に示すケーブルの
遮水性については、長さ２ｍのケーブル試験片の両端に
おける縦添え遣水層と光ファイバユニット束最外表面と
の間を防水パテにて充分に防水処理し、ケーブル試験片
のはソ中央のシース並びに縦添え遣水層を２５ａｍにわ
たりはぎとり、そこに１０００Ｗ＋の高さに水を満した
ポリエチレン管を設けて１４日後における中央部からの
透水が８５０閣以上あるかどうかを調べた。The performance of both of the above cables is shown in the table below. Regarding the water-blocking properties of the cables, apply waterproof putty to the space between the vertically attached water layer and the outermost surface of the optical fiber unit bundle at both ends of the 2 m long cable test piece. After waterproofing the cable test piece, we stripped off the central sheath and vertically attached water layer for 25 am, installed a polyethylene pipe filled with water at a height of 1000 W+, and after 14 days, the water permeation from the central part was 850 mm. I checked to see if there were more.
本発明で使用の走水防止用充填物は、常温でもしくは従
来使用の充填物と比較して低温の加熱にて充填作業が可
能であり、ために充填作業後の充填物の体積収縮がなく
、または軽度であるのでケーブルのマイクロベンドが少
なく、また、充填物の亀裂の発生がない。従ってケーブ
ルの光伝送特性、遮水性に優れている。それのみならず
、ケーブルの端末加工に際しても、充１填物は固化して
いないのでそれの除去が容易であり、従って端末加工作
業が能率よくかつ精密に行える。The water run prevention filling used in the present invention can be filled at room temperature or by heating at a lower temperature than conventionally used fillings, so there is no volumetric shrinkage of the filling after filling. , or because it is mild, there are fewer micro-bends in the cable, and there is no cracking in the filling. Therefore, the cable has excellent optical transmission characteristics and water shielding properties. Not only this, but also when processing the end of the cable, since the filling material is not solidified, it is easy to remove, and therefore the end processing work can be done efficiently and precisely.
更に、本発明のケーブルにおいては、光フアイバ間には
外力を４えると流動変形する充填物が存在するので、ケ
ーブルを屈曲した場合、充填物が潤滑剤の作用をなして
個々の光ファイバの円滑な屈曲を働ける効果もある。Furthermore, in the cable of the present invention, there is a filling between the optical fibers that flows and deforms when an external force is applied, so when the cable is bent, the filling acts as a lubricant and the individual optical fibers are It also has the effect of allowing smooth bending.
【図面の簡単な説明】
付図は、本発明の実施例の断面図であって、１２は光フ
ァイバ、３はアルミラミネートテープを縦添してなる遣
水層、５は走水防止用充填物である。
特許出願人
大日日本電線株式会社
似者す１す収締役青山幸雄[BRIEF DESCRIPTION OF THE DRAWINGS] The attached drawing is a cross-sectional view of an embodiment of the present invention, in which 12 is an optical fiber, 3 is a water-spraying layer formed by adding aluminum laminate tape vertically, and 5 is a filler for preventing water running. be. Patent applicant: Dainichi Nippon Electric Cable Co., Ltd., Director Yukio Aoyama
Claims (1)
ァイノくとの間の空間はＡＳＴＭ Ｄ−２１７で測定し
た常温における混和ちょう度が８５〜４７５０走水防止
用充填物で充填されてなることを特徴とする遮水形光フ
ァイバケーブル。1. The space between the water-blocking layer and the large number of optical fins existing inside the water-transmitting layer is filled with a water-running prevention filler with a worked penetration of 85 to 4750 at room temperature as measured by ASTM D-217. A water-shielded optical fiber cable characterized by:
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58147793A JPS6039610A (en) | 1983-08-11 | 1983-08-11 | Water shielding type optical fiber cable |
| AT84109498T ATE99424T1 (en) | 1983-08-11 | 1984-08-09 | WATERPROOF OPTICAL CABLE. |
| EP84109498A EP0137203B1 (en) | 1983-08-11 | 1984-08-09 | Waterproof optical fiber cable |
| DE3486260T DE3486260T2 (en) | 1983-08-11 | 1984-08-09 | Waterproof optical cable. |
| AU31763/84A AU571557B2 (en) | 1983-08-11 | 1984-08-09 | Waterproof optical fibre cable |
| KR1019840004788A KR920001218B1 (en) | 1983-08-11 | 1984-08-10 | Waterproof optical fiber cable |
| CA000460700A CA1250468A (en) | 1983-08-11 | 1984-08-10 | Waterproof optical fiber cable |
| US07/039,806 US4711523A (en) | 1983-08-11 | 1987-04-15 | Waterproof optical fiber cable |
| US07/967,122 USRE34732E (en) | 1983-08-11 | 1992-10-27 | Waterproof optical fiber cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58147793A JPS6039610A (en) | 1983-08-11 | 1983-08-11 | Water shielding type optical fiber cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6039610A true JPS6039610A (en) | 1985-03-01 |
| JPH0440684B2 JPH0440684B2 (en) | 1992-07-03 |
Family
ID=15438332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58147793A Granted JPS6039610A (en) | 1983-08-11 | 1983-08-11 | Water shielding type optical fiber cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6039610A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63104357U (en) * | 1986-12-24 | 1988-07-06 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5643610A (en) * | 1979-09-17 | 1981-04-22 | Nippon Telegr & Teleph Corp <Ntt> | Jelly filled optical fiber cable |
-
1983
- 1983-08-11 JP JP58147793A patent/JPS6039610A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5643610A (en) * | 1979-09-17 | 1981-04-22 | Nippon Telegr & Teleph Corp <Ntt> | Jelly filled optical fiber cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63104357U (en) * | 1986-12-24 | 1988-07-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0440684B2 (en) | 1992-07-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |