JPH11256444A - Yarn for bunching optical fiber - Google Patents
Yarn for bunching optical fiberInfo
- Publication number
- JPH11256444A JPH11256444A JP6364998A JP6364998A JPH11256444A JP H11256444 A JPH11256444 A JP H11256444A JP 6364998 A JP6364998 A JP 6364998A JP 6364998 A JP6364998 A JP 6364998A JP H11256444 A JPH11256444 A JP H11256444A
- Authority
- JP
- Japan
- Prior art keywords
- yarn
- bunching
- optical fiber
- fiber bundle
- winding
- 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
Landscapes
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】この発明は、光ファイババン
ドルに使用される光ファイババンチング用糸に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber bunching yarn used for an optical fiber bundle.
【0002】[0002]
【従来の技術】光ファイバ素線、光ファイバ心線、光フ
ァイバテープ心線、光ファイバユニットなどの光ファイ
バを複数本、撚り合わせもしくは束ねて集合し、これに
バンチング用糸を巻回して光ファイババンドルとし、こ
れを光ケーブルの光ユニットとして使用することが行わ
れている。このバンチング用糸には、従来綿、化学繊維
等の短繊維を撚り合わせたスパン糸(紡績糸)もしくは
長繊維を単に引き揃え、束ねたフィラメントが用いられ
ていた。2. Description of the Related Art A plurality of optical fibers such as an optical fiber, an optical fiber core, an optical fiber tape core, and an optical fiber unit are twisted or bundled and assembled, and a bunching yarn is wound around the assembly. A fiber bundle is used as an optical unit of an optical cable. Conventionally, as the bunching yarn, a spun yarn (spun yarn) obtained by twisting short fibers such as cotton and chemical fibers or a filament obtained by simply aligning and bundling long fibers has been used.
【0003】スパン糸は、短繊維を撚り合わせて1本の
長い糸とするために、極めて短いピッチ例えば、1m当
たり800〜1200回程で撚られている。しかしなが
ら、このスパン糸は引張力が作用した際、撚りが戻るこ
とに起因して、極めて小さい張力で大きな伸びを示す特
性を有している。例えば、200デニールの綿糸では、
50gの張力で1.2%の伸びを示す。このため光ファ
イバに巻回する場合には、スパン糸のチーズからの送り
出し張力をできるだけ小さくして送り出し、巻回後の糸
の収縮量を低減して光ファイババンドルがバンチング用
糸によって締め付けられないようにする必要がある。[0003] Spun yarns are twisted at an extremely short pitch, for example, about 800 to 1200 times per meter in order to twist short fibers into one long yarn. However, this spun yarn has a characteristic of exhibiting a large elongation with an extremely small tension due to the return of twist when a tensile force is applied. For example, with 200 denier cotton yarn,
It exhibits an elongation of 1.2% at a tension of 50 g. For this reason, when wound around an optical fiber, the tension of the spun yarn sent from the cheese is reduced as much as possible, and the spun yarn is sent out while reducing the amount of shrinkage of the yarn after winding, so that the optical fiber bundle is not tightened by the bunching yarn. You need to do that.
【0004】また、長繊維を束ねたフィラメントをバン
チング用糸とした場合には、巻回時に素繊維に簡単に分
割し、糸がほつれる問題がある。さらに、いずれのバン
チング用糸であっても、50℃以上の高温に加熱される
と熱収縮が生じる性質があり、光ファイババンドルを用
いた光ケーブルがこのような温度に曝されると、バンチ
ング用糸が収縮して、光ファイババンドルを締め付ける
問題もある。[0004] Further, when a filament obtained by bundling long fibers is used as a bunching yarn, there is a problem that the filament is easily divided into elementary fibers at the time of winding and the yarn is frayed. Furthermore, any type of bunching yarn has a property of causing heat shrinkage when heated to a high temperature of 50 ° C. or more, and when an optical cable using an optical fiber bundle is exposed to such a temperature, the bunching yarn is used. There is also a problem that the yarn contracts and tightens the optical fiber bundle.
【0005】[0005]
【発明が解決しようとする課題】よって、本発明におけ
る課題は、バンチング用糸の送り出し張力を小さくしな
くとも糸の収縮量を小さくでき、光ファイババンドルが
締め付けられないようにすることにある。また、バンチ
ング用糸の巻回時に糸が素繊維に分割せず、ほつれない
ようにすることにある。さらに、バンチング用糸が高温
に曝されても熱収縮しないようにすることにある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to reduce the amount of shrinkage of the bunching yarn without reducing the yarn sending tension, and to prevent the optical fiber bundle from being tightened. Another object of the present invention is to prevent the yarn from being split into elementary fibers when the bunching yarn is wound and not frayed. Another object of the present invention is to prevent the bunching yarn from thermally shrinking even when exposed to high temperatures.
【0006】[0006]
【課題を解決するための手段】本発明では、複数の長繊
維フィラメントに1m当たり100回以下の撚りを加え
た糸をバンチング用糸とすることで、送り出し張力を小
さくしなくとも、糸の収縮量を小さくすることができ、
また巻回時に糸がほつれることを防止することができ
る。また、長繊維フィラメントに静電防止剤、収束剤な
どの表面処理剤を塗布することで、バンチング用糸をチ
ーズからスムーズに送り出すことができ、送り出し張力
を小さくし、収縮量を小さくすることができる。さら
に、60〜100℃の加熱処理を予め施しておくこと
で、光ケーブル等にしたとき、高温に曝されてもバンチ
ング用糸が熱収縮することもない。According to the present invention, a yarn obtained by adding 100 or less twists per meter to a plurality of long fiber filaments is used as a bunching yarn, so that the yarn can be shrunk without reducing the feeding tension. The amount can be reduced,
Further, it is possible to prevent the yarn from fraying during winding. Also, by applying a surface treatment agent such as an antistatic agent and a sizing agent to the long fiber filament, the yarn for bunching can be smoothly sent out of the cheese, and the sending tension can be reduced, and the shrinkage can be reduced. it can. Furthermore, by performing the heat treatment at 60 to 100 ° C. in advance, when the optical cable or the like is used, the bunching yarn does not thermally shrink even when exposed to high temperatures.
【0007】[0007]
【発明の実施の形態】以下、本発明を詳しく説明する。
本発明の請求項1に係るバンチング用糸は、複数の長繊
維フィラメントに1m当たり100回以下の撚りを加え
て得られた糸からなるものである。ここで使用される長
繊維フィラメントは、ナイロン、ポリエステルなどの化
学繊維の太さが50〜1000デニールのフィラメント
を言う。このフィラメントを多数本束ねた上、これに1
m当たり100回以下、好ましくは40〜80回の弱い
撚りを加えて得られた糸が、このバンチング用糸とな
る。撚りはS撚り、Z撚りのいずれでもよい。ここで、
撚りの回数が1m当たり100回を越えると、巻回後の
バンチング用糸の収縮量が大きくなって不都合となる。
このバンチング用糸では、例えばポリエステル糸 25
0デニールの引張力50gの時の伸びは0.15%とな
る。この糸は、巻取りボビンに巻き取られてチーズとさ
れて、使用に供される。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
The bunching yarn according to claim 1 of the present invention is a yarn obtained by applying a twist of 100 or less per m to a plurality of long fiber filaments. The long fiber filament used here refers to a filament having a thickness of 50 to 1000 denier of a chemical fiber such as nylon or polyester. After bundling many of these filaments,
A yarn obtained by adding a weak twist of 100 times or less, preferably 40 to 80 times per m is the bunching yarn. Twisting may be either S-twisting or Z-twisting. here,
If the number of twists exceeds 100 per meter, the amount of shrinkage of the bunching yarn after winding becomes large, which is inconvenient.
In this bunching yarn, for example, a polyester yarn 25
The elongation at a 0-denier tensile force of 50 g is 0.15%. This yarn is wound on a winding bobbin to form a cheese, which is then used.
【0008】このようなバンチング用糸にあっては、撚
りの回数が少なく、撚りが弱いので、糸に作用する引張
力が大きくなっても伸びは低いレベルにとどまることに
なる。このため、このバンチング用糸の巻回時の送り出
し張力を小さくしなくとも、巻回後の糸に残る伸びは小
さく、収縮量も小さいものとなり、したがって、巻回後
にバンチング用糸によって光ファイババンドルが締め付
けられることがなくなる。また、適度の撚りが加えられ
ているので、素繊維に分離することがなく、糸がほつれ
ることもない。In such a bunching yarn, since the number of twists is small and the twist is weak, the elongation remains at a low level even if the tensile force acting on the yarn increases. For this reason, even if the feeding tension at the time of winding of the bunching yarn is not reduced, the elongation remaining on the yarn after winding is small and the shrinkage amount is small. Will not be tightened. In addition, since an appropriate twist is added, the fibers are not separated into elementary fibers, and the yarns are not frayed.
【0009】本発明の請求項2に係るバンチング用糸
は、請求項1のバンチング用糸において、長繊維フィラ
メントの表面に静電防止剤、収束剤などの表面処理剤を
塗布したのち、これを束ね、撚りを加えてなるものであ
る。ここでの静電防止収束剤としては、アニオン系やカ
チオン系のものが用いられる。The bunching yarn according to the second aspect of the present invention is the bunching yarn according to the first aspect, wherein a surface treatment agent such as an antistatic agent or a sizing agent is applied to the surface of the long fiber filament, and then this is applied. It is made by bundling and twisting. As the antistatic sizing agent, an anionic or cationic agent is used.
【0010】このバンチング用糸にあっては、糸の表面
の滑り性が向上し、チーズからスムーズに送り出される
ようになり、これにより送り出し張力を低減化すること
ができる。このため、請求項1に係るバンチング用糸に
比べてさらに巻回後の糸の収縮量を小さくすることが可
能となる。In this bunching yarn, the slipperiness of the surface of the yarn is improved, and the yarn can be smoothly fed out of the cheese, whereby the feeding tension can be reduced. For this reason, it is possible to further reduce the shrinkage amount of the wound yarn as compared with the bunching yarn according to the first aspect.
【0011】本発明の請求項3に係るバンチング用糸
は、請求項1に係るバンチング用糸において、60〜1
00℃の温度での加熱処理を更に施したものである。こ
の加熱処理により糸が約1〜10%熱収縮することにな
る。ここでの加熱処理は、温度60〜100℃、時間
0.1〜6時間、非酸化性雰囲気での条件で行うことが
好ましい。The bunching yarn according to claim 3 of the present invention is the bunching yarn according to claim 1, wherein
Heat treatment at a temperature of 00 ° C. is further performed. This heat treatment causes the yarn to shrink by about 1 to 10%. The heat treatment here is preferably performed at a temperature of 60 to 100 ° C. for a time of 0.1 to 6 hours in a non-oxidizing atmosphere.
【0012】このバンチング用糸では、このバンチング
用糸を巻回して製造された光ファイババンドルが光ケー
ブルに用いられた際に、この光ケーブルに60〜100
℃の熱履歴が加わっても、バンチング用糸がこの熱履歴
によって熱収縮することがなくなる。このため、光ケー
ブル内の光ファイババンドルがバンチング用糸で締め付
けられることがなく、光ファイバの伝送損失が増大する
ことが防止できる。In the bunching yarn, when the optical fiber bundle manufactured by winding the bunching yarn is used for an optical cable, the optical cable has a length of 60 to 100.
Even if a heat history of ° C. is applied, the bunching yarn does not thermally contract due to this heat history. For this reason, the optical fiber bundle in the optical cable is not fastened by the bunching thread, and the transmission loss of the optical fiber can be prevented from increasing.
【0013】[0013]
【発明の効果】以上説明したように、請求項1に係る発
明によれば、光ファイババンドルがバンチング用糸によ
って締め付けられることがなくなり、光ファイバの伝送
損失が増大することがない。また、バンチング用糸の巻
回時のほつれが生じない。請求項2に係る発明によれ
ば、更にバンチング用糸をチーズからスムーズに送り出
すことができ、送り出し張力を低減化でき、バンチング
糸の収縮をさらにわずかなものとすることができる。請
求項3に係る発明によれば、更にバンチング用糸を巻回
した光ファイババンドルが高温に曝されても、糸が熱収
縮することがなく、これによる締め付けが生じることが
ない。As described above, according to the first aspect of the present invention, the optical fiber bundle is not tightened by the bunching thread, and the transmission loss of the optical fiber does not increase. Also, no fraying occurs when winding the bunching yarn. According to the invention according to claim 2, the yarn for bunching can be further smoothly fed from the cheese, the feeding tension can be reduced, and the shrinkage of the bunching yarn can be further reduced. According to the third aspect of the present invention, even if the optical fiber bundle further wound with the bunching yarn is exposed to a high temperature, the yarn does not thermally shrink, and thus the tightening does not occur.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 宮本 末広 千葉県佐倉市六崎1440番地 株式会社フジ クラ佐倉工場内 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Suehiro Miyamoto 1440, Musaki, Sakura City, Chiba Prefecture Inside Fujikura Sakura Plant
Claims (3)
100回以下の撚りを加えて得られた糸からなることを
特徴とする光ファイババンチング用糸。1. An optical fiber bunching yarn comprising a yarn obtained by twisting a plurality of long fiber filaments 100 times or less per m.
束剤などの表面処理剤が塗布されていることを特徴とす
る請求項1記載の光ファイババンチング用糸。2. The yarn for optical fiber bunching according to claim 1, wherein a surface treatment agent such as an antistatic agent and a sizing agent is applied to the long fiber filament.
ことを特徴とする請求項1記載の光ファイババンチング
用糸。3. The optical fiber bunching yarn according to claim 1, wherein a heat treatment at 60 to 100 ° C. is performed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP06364998A JP3468683B2 (en) | 1998-03-13 | 1998-03-13 | Optical fiber bunching yarn |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP06364998A JP3468683B2 (en) | 1998-03-13 | 1998-03-13 | Optical fiber bunching yarn |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11256444A true JPH11256444A (en) | 1999-09-21 |
JP3468683B2 JP3468683B2 (en) | 2003-11-17 |
Family
ID=13235419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP06364998A Expired - Lifetime JP3468683B2 (en) | 1998-03-13 | 1998-03-13 | Optical fiber bunching yarn |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3468683B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1394577A1 (en) * | 2002-08-28 | 2004-03-03 | Fujikura Ltd. | Image Fiber |
EP3502759B1 (en) * | 2016-08-18 | 2021-08-25 | Fujikura Ltd. | Device and method for inspecting optical fiber unit |
-
1998
- 1998-03-13 JP JP06364998A patent/JP3468683B2/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1394577A1 (en) * | 2002-08-28 | 2004-03-03 | Fujikura Ltd. | Image Fiber |
US7221834B2 (en) | 2002-08-28 | 2007-05-22 | Fujikura Ltd. | Image fiber |
EP1835314A2 (en) * | 2002-08-28 | 2007-09-19 | Fujikura Ltd. | Image fiber |
EP1835314A3 (en) * | 2002-08-28 | 2007-10-10 | Fujikura Ltd. | Image fiber |
US7734134B2 (en) | 2002-08-28 | 2010-06-08 | Fujikura Ltd. | Fiber scope |
EP3502759B1 (en) * | 2016-08-18 | 2021-08-25 | Fujikura Ltd. | Device and method for inspecting optical fiber unit |
Also Published As
Publication number | Publication date |
---|---|
JP3468683B2 (en) | 2003-11-17 |
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