JPS6220102Y2 - - Google Patents
Info
- Publication number
- JPS6220102Y2 JPS6220102Y2 JP1981130246U JP13024681U JPS6220102Y2 JP S6220102 Y2 JPS6220102 Y2 JP S6220102Y2 JP 1981130246 U JP1981130246 U JP 1981130246U JP 13024681 U JP13024681 U JP 13024681U JP S6220102 Y2 JPS6220102 Y2 JP S6220102Y2
- Authority
- JP
- Japan
- Prior art keywords
- cable
- string
- sheath
- present
- film
- 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
Links
Landscapes
- Insulated Conductors (AREA)
Description
【考案の詳細な説明】
本考案はケーブル線心相互間に介在を充填して
成る電気ケーブルの改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an electrical cable having an interposer filled between cable cores.
一般に複数のケーブル線心を撚合せて成るケー
ブルにおいては、ケーブル線心の撚合せ状態が崩
れないようにケーブル線心相互間に介在を充填す
ることが行われる。従来、この介在として使用さ
れている材料は次のようなものであり、それぞれ
問題を有していた。 Generally, in a cable formed by twisting a plurality of cable cores, an interposition is filled between the cable cores so that the twisted state of the cable cores does not collapse. Conventionally, the following materials have been used for this interposition, and each of them has had its own problems.
(1) ジユート・紙………本質的に吸湿性であり、
乾燥させて使用しなければならず、使用上面倒
である。(1) Juute/Paper is essentially hygroscopic;
It must be dried before use, which is cumbersome to use.
(2) ポリプロピレン紐……ポリプロピレンの融点
は176℃であるため、介在充填後にシースを被
覆する場合、シース押出時の熱（約200℃）に
より紐が収縮し、最悪の場合ケーブルが蛇行状
態となる惧れがある。特に加熱時間が長い加硫
工程を必要とするゴムシースの場合、この現象
が著るしい。(2) Polypropylene string...The melting point of polypropylene is 176°C, so when covering the sheath after filling the sheath, the string will shrink due to the heat (approximately 200°C) during sheath extrusion, and in the worst case, the cable will become meandering. There is a fear that this will happen. This phenomenon is particularly noticeable in the case of rubber sheaths that require a vulcanization process with a long heating time.
本考案は上記に鑑み案出されたものであり、介
在としてポリエチレンテレフタレートフイルムま
たはポリブチレンテレフタレートフイルムを紐状
とした材料を用いたことを特徴とする。本考案を
図面により以下に説明する。 The present invention has been devised in view of the above, and is characterized by using a string-like material made of polyethylene terephthalate film or polybutylene terephthalate film as an intervening material. The present invention will be explained below with reference to the drawings.
第１図は、本考案に係る電気ケーブルの一実施
例の断面図であり、図において、１は線心、２は
介在、３はシースである。介在２はポリエステル
フイルムをダイス等でしごいたり、撚りをかけた
りすることにより紐状とした材料であるフイルム
は５〜40μｍ好ましくは５〜20μｍの厚さのもの
を用いる。一枚のフイルムを紐状としても良く、
複数枚のフイルムを一括して紐状としても良い。 FIG. 1 is a cross-sectional view of one embodiment of an electric cable according to the present invention. In the figure, 1 is a wire core, 2 is an intervening wire, and 3 is a sheath. The interposer 2 is made of polyester film made into a string by squeezing it with a die or the like or twisting it.The film used has a thickness of 5 to 40 .mu.m, preferably 5 to 20 .mu.m. A piece of film may be made into a string,
A plurality of films may be made into a string at once.
以上のように、本考案に係る電気ケーブルはシ
ースの押出時の熱（約200℃）より高い融点のポ
リエステル即ちポリエチレンテレフタレート
（256℃）またはポリブチレンテレフタレート
（218〜219℃）を用いているため、シースの押出
時の熱（約200℃）によつても介在が収縮するこ
とがなく、従つて蛇行等の生じない良好なケーブ
ルを製造することができる。また、ポリエステル
は吸湿性がなく、従つて、介在を乾燥する必要が
ないためケーブルを経済的に製造し得る。なお、
ポリエステルは厚肉の場合柔らかさに欠けるが、
本考案ではうすいフイルム状とし、これを紐状と
して使用しているから、適当な柔らかさを必要と
する介在として良好に使用し得る。 As mentioned above, the electric cable according to the present invention uses polyester with a melting point higher than the heat (approximately 200 degrees Celsius) during extrusion of the sheath, that is, polyethylene terephthalate (256 degrees Celsius) or polybutylene terephthalate (218 to 219 degrees Celsius). Even when the sheath is extruded by heat (approximately 200° C.), the interposer does not shrink, and therefore a good cable without meandering or the like can be manufactured. Also, polyester is not hygroscopic and therefore the cable can be manufactured economically since there is no need to dry the intervening material. In addition,
Polyester lacks softness when thick, but
In the present invention, since the thin film is used in the form of a string, it can be satisfactorily used as an interposition that requires appropriate softness.
第１図は本考案に係る電気ケーブルの一実施例
の断面図である。
図において、１……線心、２……介在、３……
シース。
FIG. 1 is a sectional view of an embodiment of an electric cable according to the present invention. In the figure, 1...wire core, 2...intervening, 3...
sheath.
Claims (1)
リブチレンテレフタレートフイルムを紐状とした
材料をケーブル線心相互間に介在として充填した
上にシースを押出被覆して成る電気ケーブル。 An electric cable in which a string-shaped polyethylene terephthalate film or polybutylene terephthalate film is filled between the cable cores as an intermediary, and then a sheath is extrusion-coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13024681U JPS5835221U (en) | 1981-08-31 | 1981-08-31 | electric cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13024681U JPS5835221U (en) | 1981-08-31 | 1981-08-31 | electric cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5835221U JPS5835221U (en) | 1983-03-08 |
| JPS6220102Y2 true JPS6220102Y2 (en) | 1987-05-22 |
Family
ID=29923884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13024681U Granted JPS5835221U (en) | 1981-08-31 | 1981-08-31 | electric cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5835221U (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5230838Y2 (en) * | 1973-06-20 | 1977-07-14 |
-
1981
- 1981-08-31 JP JP13024681U patent/JPS5835221U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5835221U (en) | 1983-03-08 |
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