JPH0715057Y2 - Jelly-filled communication cable - Google Patents
Jelly-filled communication cableInfo
- Publication number
- JPH0715057Y2 JPH0715057Y2 JP1987109525U JP10952587U JPH0715057Y2 JP H0715057 Y2 JPH0715057 Y2 JP H0715057Y2 JP 1987109525 U JP1987109525 U JP 1987109525U JP 10952587 U JP10952587 U JP 10952587U JP H0715057 Y2 JPH0715057 Y2 JP H0715057Y2
- Authority
- JP
- Japan
- Prior art keywords
- jelly
- cable
- filled
- units
- water
- 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
- 235000015110 jellies Nutrition 0.000 title claims description 21
- 239000008274 jelly Substances 0.000 title claims description 21
- 238000004891 communication Methods 0.000 title claims description 5
- 229920005594 polymer fiber Polymers 0.000 claims description 5
- 239000002250 absorbent Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000004264 Petrolatum Substances 0.000 description 1
- 241000219000 Populus Species 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229940066842 petrolatum Drugs 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Description
【考案の詳細な説明】 (考案の技術分野) 本考案は、ユニット型のジェリー充填型通信ケーブル
(以下、JFケーブルと示す。)に関する。[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a unit type jelly-filled communication cable (hereinafter referred to as a JF cable).
(考案の技術的背景) 従来からユニット型の多対通信ケーブルの防水或いは遮
水特性を向上させるために、ユニットを構成するケーブ
ルコア間とユニットとユニットとの間隙部に防水混和物
(ジェリー)を充填することが行われている。(Technical background of the invention) In order to improve the waterproof or water-impervious property of a unit type multi-pair communication cable, a waterproof admixture (jelly) is conventionally used between the cable cores constituting the unit and in the gap between the units. Is being filled.
また、このようなJFケーブルにおいては、以下に示すよ
うに、コンパウンドフロー特性が良好であることが要求
されている。すなわち、コンパウンドフロー特性の評価
試験方法はいろいろあるが、例えばREA PE−89による
と、約30cmのケーブル試料のうち約15cmの部分の押え巻
と外被を剥ぎとり、内部のケーブルコアを放射状に広げ
た状態で指定温度(通常60〜80℃)で24時間放置したと
き、ジェリーの滴下があってはならないとされている。In addition, such JF cables are required to have good compound flow characteristics, as shown below. That is, although there are various methods for evaluating the compound flow characteristics, for example, according to REA PE-89, the press winding and the jacket of about 15 cm portion of a cable sample of about 30 cm are stripped off, and the inner cable core is radially formed. It is said that jelly should not be dripped when left unrolled for 24 hours at the specified temperature (usually 60-80 ° C).
(背景技術の問題点) しかしながら、従来のユニット型JFケーブルにこのよう
な試験を行った場合には、試験温度領域では、室温時に
比べてジェリーは膨張する一方、外被(通常ポリエチレ
ンからなる)は収縮する。このため、ケーブル内の空隔
部の容積が減少し、ケーブルコア間に充填されたジェリ
ーが、内部圧がより低いユニット間に押出され、この結
果、もとからユニット間に充填されていたジェリーが外
部に押出されて落下することが多かった。(Problems of background art) However, when such a test is performed on a conventional unit-type JF cable, in the test temperature range, the jelly expands as compared with the room temperature, while the jacket (usually made of polyethylene) Contracts. This reduces the volume of the air gap in the cable and causes the jelly filled between the cable cores to be extruded between the units with lower internal pressure, resulting in the jelly originally filled between the units. Was often pushed out and dropped.
このような落下現象は、ケーブルコア間のジェリーの充
填が良好なものほど顕著に見られ、遮水特性を向上させ
るために、コア間にジェリーを大量に充填すると、かえ
ってコンパウンドフロー特性が低下してしまうという矛
盾を生じていた。そして、粘度の高いジェリーを使用す
るほど必然的にコンパウンドフロー特性は良好になる
が、この場合はコア間にジェリーを充分に充填すること
ができず、遮水特性が低下するという問題があった。Such a drop phenomenon is more noticeable when the jelly filling between the cable cores is better, and when a large amount of jelly is filled between the cores in order to improve the water impermeability, the compound flow properties rather deteriorate. There was a contradiction that it would end up. And, the more viscous jelly is used, the better the compound flow characteristics are inevitably, but in this case, the jelly cannot be sufficiently filled between the cores, and there is a problem that the water-blocking characteristics are deteriorated. .
(考案の目的) 本考案はこれらの問題を解決するためになされたもの
で、遮水特性とコンパウンドフロー特性の両面に優れた
ユニット型JFケーブルを提供することを目的とする。(Purpose of Invention) The present invention has been made to solve these problems, and an object thereof is to provide a unit type JF cable having both excellent water-blocking characteristics and compound flow characteristics.
(考案の概要) すなわち本考案のJFケーブルは、複数本のケーブルコア
を撚合わせ、かつ前記コア間にジェリーを充填してなる
ユニットの複数個を集束するとともに、これらのユニッ
ト間に吸水性ポリマー繊維からなる介在を設け、その上
に押え巻層を設け、さらにその外側にプラスチック外被
を設けて成ることを特徴としている。(Outline of the Invention) That is, the JF cable of the present invention bundles a plurality of units in which a plurality of cable cores are twisted and jelly is filled between the cores, and a water-absorbing polymer is provided between these units. The present invention is characterized in that an interposition made of fibers is provided, a press winding layer is provided on the interposition, and a plastic jacket is provided on the outer side thereof.
(考案の実施例) 以下、本考案のJFケーブルの実施例を図面に基づいて説
明する。(Embodiment of the Invention) An embodiment of the JF cable of the present invention will be described below with reference to the drawings.
図において符号1は絶縁ケーブルコアを示し、このケー
ブルコア1の複数本が撚合わされかつコア間にペトロラ
タム系等のジェリー2が充填されてユニット3が構成さ
れている。In the figure, reference numeral 1 indicates an insulated cable core, and a plurality of the cable cores 1 are twisted together and a jelly 2 of petrolatum type or the like is filled between the cores to form a unit 3.
またこのようなユニット3の複数個が集束されており、
ユニット3間には、カルボキシルメチルセルロース系、
ポリアクリル酸系、ポパール系等の吸水性の高いポリマ
ーの繊維からなるひも状或いは綿状の介在4が介挿され
ている。Also, a plurality of such units 3 are bundled,
Between the units 3, carboxymethyl cellulose type,
A cord-shaped or cotton-shaped interposition 4 made of fibers of a polymer having a high water absorption property such as a polyacrylic acid type or a poplar type is inserted.
さらにこれらの上には押えテープの巻回層5とポリエチ
レン外被6が順に設けられている。Further, a winding layer 5 of a pressing tape and a polyethylene jacket 6 are provided on these in order.
このような構造の実施例のユニット型JFケーブルにおい
ては、ユニット3間に吸水性ポリマー繊維からなるひも
状等の介在4が挿入されており、この介在4が、ケーブ
ル内に水が侵入してきた場合に水を吸収し膨張してユニ
ット3間の空隙部を塞ぐため、充分な遮水特性が発揮さ
れる。In the unit type JF cable of the embodiment having such a structure, a cord-shaped interposition 4 made of a water-absorbent polymer fiber is inserted between the units 3, and the interposition 4 causes water to enter the cable. In this case, it absorbs water and expands to close the gaps between the units 3, so that sufficient water-blocking properties are exhibited.
またコンパウンドフロー特性の試験時には、外被6の収
縮とジェリー2の膨張によって、ケーブルコア1間に充
填されたジェリー2がユニット3間隙に押し出されてき
ても、ジェリー2は、介在4,4……の空隙に取込まれ
て、介在4,4……の空隙に満たされるため、外部へ押し
出されて落下することがない。Further, during the test of the compound flow characteristics, even if the jelly 2 filled between the cable cores 1 is pushed out into the gap of the unit 3 due to the contraction of the jacket 6 and the expansion of the jelly 2, the jelly 2 will not be inserted. It will not be pushed out to the outside because it will be taken into the void and filled with the intervening gap 4,4.
(考案の効果) 以上の説明から明らかなように、本考案のジェリー充填
型通信ケーブルによれば、ケーブル内に水が侵入してき
た場合は、吸水性ポリマー繊維からなる介在が水を吸収
して膨張してユニット間の空隙部を塞ぐため、充分な遮
水特性が発揮され、また、コンパウンドフロー特性の試
験時には、ジェリーがユニット間隙に押し出されてきて
も、ジェリーは、介在間の空隙に取込まれて、介在間の
空隙に満たされるため、外部へ押し出されて落下するこ
とがない。(Effect of the Invention) As is clear from the above description, according to the jelly-filled type communication cable of the present invention, when water enters the cable, the interposition made of the water-absorbent polymer fiber absorbs the water. Since it expands and closes the voids between the units, sufficient water-impervious properties are exhibited, and when the compound flow characteristics are tested, even if the jelly is pushed out into the unit gap, the jelly is taken up in the gap between the interpositions. Since it is inserted and filled in the space between the interpositions, it is not pushed out to the outside and falls.
さらに、ユニット間に吸水性ポリマー繊維からなる介在
を設けているため、高価な吸水膨潤性材料をユニット間
に大量に使用する必要がなく、経済的にも優れている。Furthermore, since an interposition of water-absorbent polymer fibers is provided between the units, there is no need to use a large amount of expensive water-swellable material between the units, which is economically superior.
図面は本考案のJFケーブルの一実施例を示す横断面図で
ある。 1……ケーブルコア 2……ジェリー 3……ユニット 4……吸水性ポリマー繊維からなる介在 6……ポリエチレン外被The drawing is a cross-sectional view showing an embodiment of the JF cable of the present invention. 1 ... Cable core 2 ... Jerry 3 ... Unit 4 ... Interposition made of water-absorbing polymer fiber 6 ... Polyethylene jacket
Claims (1)
記コア間にジェリーを充填してなるユニットの複数個を
集束するとともに、これらのユニット間に吸水性ポリマ
ー繊維からなる介在を設け、その上に押え巻層を設け、
さらにその外側にプラスチック外被を設けて成ることを
特徴とするジェリー充填型通信ケーブル。1. A plurality of units in which a plurality of cable cores are twisted and jelly is filled between the cores are bundled together, and an interposing unit made of a water-absorbent polymer fiber is provided between these units. Provide a presser winding layer on the top,
Furthermore, a jelly-filled type communication cable characterized in that a plastic jacket is provided on the outside thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987109525U JPH0715057Y2 (en) | 1987-07-16 | 1987-07-16 | Jelly-filled communication cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987109525U JPH0715057Y2 (en) | 1987-07-16 | 1987-07-16 | Jelly-filled communication cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6413626U JPS6413626U (en) | 1989-01-24 |
| JPH0715057Y2 true JPH0715057Y2 (en) | 1995-04-10 |
Family
ID=31345849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987109525U Expired - Lifetime JPH0715057Y2 (en) | 1987-07-16 | 1987-07-16 | Jelly-filled communication cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0715057Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006164813A (en) * | 2004-12-09 | 2006-06-22 | Fujikura Ltd | cable |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819775U (en) * | 1981-07-30 | 1983-02-07 | 三菱レイヨン株式会社 | Jig for plastic cleansing dip coating |
-
1987
- 1987-07-16 JP JP1987109525U patent/JPH0715057Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6413626U (en) | 1989-01-24 |
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