JP2538664Y2 - Insulated wire - Google Patents
Insulated wireInfo
- Publication number
- JP2538664Y2 JP2538664Y2 JP1989128692U JP12869289U JP2538664Y2 JP 2538664 Y2 JP2538664 Y2 JP 2538664Y2 JP 1989128692 U JP1989128692 U JP 1989128692U JP 12869289 U JP12869289 U JP 12869289U JP 2538664 Y2 JP2538664 Y2 JP 2538664Y2
- Authority
- JP
- Japan
- Prior art keywords
- insulated wire
- insulator
- crystallinity
- conductor
- unsintered
- 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
Landscapes
- Insulated Conductors (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案は、高周波での使用に適した絶縁電線、とくに
高周波における伝送特性が改善された絶縁電線に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to an insulated wire suitable for use at high frequencies, and particularly to an insulated wire having improved transmission characteristics at high frequencies.
［従来の技術］ 導体外周にポリテトラフルオロエチレン樹脂（PTFE）
を押出被覆し、これを焼結してなる絶縁電線が従来より
知られている。[Prior art] Polytetrafluoroethylene resin (PTFE) around conductor
An insulated wire obtained by extrusion-coating and sintering the same is conventionally known.
［考案が解決しようとする課題］ 従来の絶縁電線では、硬く、表面が滑らかで摩擦抵抗
の小さい焼結PTFEで絶縁体が形成されているため、導体
と絶縁体との密着性が良くなく、また、PTFEは焼結によ
り結晶化度が93％から45％程度に低下するため、高周波
における挿入損失特性が悪化するという問題がある。[Problem to be solved by the invention] In a conventional insulated wire, the insulator is formed of sintered PTFE that is hard, has a smooth surface, and has a small frictional resistance, so that the adhesion between the conductor and the insulator is poor. In addition, PTFE has a problem that the crystallization reduces the crystallinity from 93% to about 45%, so that the insertion loss characteristics at high frequencies are deteriorated.
本考案は、前記した従来技術の欠点を解消し、導体の
密着性及び高周波領域での伝送特性が改善された絶縁電
線の提供を目的とするものである。An object of the present invention is to solve the above-mentioned drawbacks of the prior art, and to provide an insulated wire having improved conductor adhesion and transmission characteristics in a high-frequency region.
［課題を解決するための手段］ 本考案の絶縁電線は、導体外周に弗素樹脂の絶縁体を
形成した絶縁電線において、前記絶縁体は異なる結晶化
度の内層と外層からなる二層構造であると共に、未焼結
弗素樹脂の１回押出しにより形成されたものであり、内
層は結晶化度が60％を越える未焼結または半焼結状態で
あり、外層は結晶化度が60％以下の完全焼結状態である
ことを特徴とするものである。[Means for Solving the Problems] The insulated wire according to the present invention is an insulated wire in which a fluororesin insulator is formed on the outer periphery of a conductor, wherein the insulator has a two-layer structure including an inner layer and an outer layer having different degrees of crystallinity. At the same time, it is formed by a single extrusion of unsintered fluororesin, the inner layer is unsintered or semi-sintered with crystallinity exceeding 60%, and the outer layer is completely non-sintered with crystallinity below 60%. It is characterized by being in a sintered state.
［作用］ 本考案の絶縁電線は、導体側となる内層は結晶化度が
60％を越える未焼結または半焼結状態であるため、導体
と絶縁体との密着性を向上できると共に、伝送特性を改
善することができる。[Action] In the insulated wire of the present invention, the inner layer on the conductor side has a crystallinity.
Since it is in an unsintered or semi-sintered state exceeding 60%, the adhesion between the conductor and the insulator can be improved, and the transmission characteristics can be improved.
［実施例］ 第１図は本考案の絶縁電線の一実施例の断面説明図で
あり、１は導体、２は内層絶縁体、３は外層絶縁体であ
る。[Embodiment] Fig. 1 is an explanatory sectional view of an embodiment of the insulated wire of the present invention, wherein 1 is a conductor, 2 is an inner insulator, and 3 is an outer insulator.
（実施例１） 外径0.912mmの銀メッキ軟銅線を導体１とし、この外
周に厚さ1.04mmに結晶化度93％の未焼結PTFEを押出被覆
し、380〜390℃の温度で焼結したところ、厚さ0.70mm、
結晶化度93％の未焼結PTFEからなる内層絶縁体２と、厚
さ0.34mm、結晶化度60％の完全焼結PTFEからなる外層絶
縁体３が形成された絶縁電線が得られた。(Example 1) A silver-plated annealed copper wire having an outer diameter of 0.912 mm was used as a conductor 1, and a 1.04 mm-thick unsintered PTFE having a crystallinity of 93% was extrusion-coated on the outer periphery and fired at a temperature of 380 to 390 ° C. When tied, the thickness 0.70mm,
An insulated wire was obtained in which an inner insulator 2 made of unsintered PTFE having a crystallinity of 93% and an outer insulator 3 made of completely sintered PTFE having a thickness of 0.34 mm and a crystallinity of 60% were formed.
この絶縁電線の挿入損失を測定したところ、周波数18
GHzにおいては1.8〜1.9dB/mであった。When the insertion loss of this insulated wire was measured,
In GHz, it was 1.8 to 1.9 dB / m.
なお、結晶化度60％の完全焼結PTFE絶縁体からなる従
来構造の絶縁電線の周波数1.8GHzにおける挿入損失は、
2.1〜2.2dB/mであった。The insertion loss at a frequency of 1.8 GHz for a conventional insulated wire made of a fully sintered PTFE insulator with a crystallinity of 60% is as follows:
It was 2.1 to 2.2 dB / m.
（実施例２） 外径0.912mmの銀メッキ軟銅線を導体１とし、この外
周に厚さ1.04mmに結晶化度93％の未焼結PTFEを押出被覆
し、380〜390℃の温度で焼結したところ、厚さ0.70mm、
結晶化度80％の半焼結PTFEからなる内層絶縁体２と、厚
さ0.34mm、結晶化度60％の完全焼結PTFEからなる外層絶
縁体３が形成された絶縁電線が得られた。(Example 2) A silver-plated annealed copper wire having an outer diameter of 0.912 mm was used as a conductor 1, and a 1.04 mm-thick unsintered PTFE having a crystallinity of 93% was extrusion-coated on the outer periphery and fired at a temperature of 380 to 390 ° C. When tied, the thickness 0.70mm,
An insulated wire was obtained in which an inner insulator 2 made of semi-sintered PTFE with a crystallinity of 80% and an outer insulator 3 made of fully sintered PTFE with a thickness of 0.34 mm and a crystallinity of 60% were formed.
この絶縁電線の挿入損失を測定したところ、周波数18
GHzにおいては1.9〜2.0dB/mであった。When the insertion loss of this insulated wire was measured,
In GHz, it was 1.9 to 2.0 dB / m.
本考案の絶縁電線は、その外周に外部導体及びジャケ
ットを設けることにより同軸ケーブルとすることができ
る。The insulated wire of the present invention can be made into a coaxial cable by providing an outer conductor and a jacket on the outer periphery.
［考案の効果］ 以上説明してきたとおり、本考案の絶縁電線は、内層
絶縁体は結晶化度が60％を越える未焼結または半焼結状
態のPTFEでもって、外層絶縁体はは結晶化度が60％以下
の完全焼結状態のPTFEで構成したものであり、導体と絶
縁体の密着性を改善できると共に、高周波における伝送
特性を改善できるという効果がある。また、内層絶縁体
と外層絶縁体とは未焼結弗素樹脂の１回押出しにより形
成されものであり、層分けすることでありがちな層間ギ
ャップを生じることがないという効果がある。[Effects of the Invention] As described above, the insulated wire of the present invention has an inner insulator made of unsintered or semi-sintered PTFE whose crystallinity exceeds 60%, and an outer insulator made of a crystallinity. Is made of PTFE in a completely sintered state of 60% or less, and has the effects of improving the adhesion between the conductor and the insulator and improving the transmission characteristics at high frequencies. Further, the inner insulator and the outer insulator are formed by a single extrusion of the unsintered fluororesin, and there is an effect that an interlayer gap, which is often caused by layering, does not occur.
第１図は、本考案の絶縁電線の一実施例の断面説明図で
ある。 1:導体、2:内層絶縁体、3:外層絶縁体FIG. 1 is an explanatory sectional view of an embodiment of the insulated wire of the present invention. 1: conductor, 2: inner layer insulator, 3: outer layer insulator
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭64−60928（ＪＰ，Ａ) 実開 昭58−55312（ＪＰ，Ｕ) 実公 昭57−22643（ＪＰ，Ｙ２) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-64-60928 (JP, A) JP-A-58-55312 (JP, U) JP-A-57-22643 (JP, Y2)
Claims (1)
縁電線において、前記絶縁体は異なる結晶化度の内層と
外層からなる二層構造であると共に、未焼結弗素樹脂の
１回押出しにより形成されたものであり、内層は結晶化
度が60％を越える未焼結または半焼結状態であり、外層
は結晶化度が60％以下の完全焼結状態であることを特徴
とする絶縁電線。1. An insulated wire in which a fluororesin insulator is formed on the outer periphery of a conductor, wherein the insulator has a two-layer structure including an inner layer and an outer layer having different degrees of crystallinity, and a single extrusion of unsintered fluororesin. The inner layer is in an unsintered or semi-sintered state having a crystallinity of more than 60%, and the outer layer is in a completely sintered state having a crystallinity of 60% or less. Electrical wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989128692U JP2538664Y2 (en) | 1989-11-02 | 1989-11-02 | Insulated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989128692U JP2538664Y2 (en) | 1989-11-02 | 1989-11-02 | Insulated wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0368314U JPH0368314U (en) | 1991-07-04 |
| JP2538664Y2 true JP2538664Y2 (en) | 1997-06-18 |
Family
ID=31676382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989128692U Expired - Lifetime JP2538664Y2 (en) | 1989-11-02 | 1989-11-02 | Insulated wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2538664Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5722643U (en) * | 1980-07-15 | 1982-02-05 |
-
1989
- 1989-11-02 JP JP1989128692U patent/JP2538664Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0368314U (en) | 1991-07-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |