JPH0327496B2 - - Google Patents
Info
- Publication number
- JPH0327496B2 JPH0327496B2 JP57210600A JP21060082A JPH0327496B2 JP H0327496 B2 JPH0327496 B2 JP H0327496B2 JP 57210600 A JP57210600 A JP 57210600A JP 21060082 A JP21060082 A JP 21060082A JP H0327496 B2 JPH0327496 B2 JP H0327496B2
- Authority
- JP
- Japan
- Prior art keywords
- coating
- resin
- present
- optical fiber
- particles
- 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
- 238000000576 coating method Methods 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 239000011247 coating layer Substances 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 6
- 239000011342 resin composition Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 description 13
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000009503 electrostatic coating Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000007765 extrusion coating Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Description
【発明の詳細な説明】
(イ) 技術分野
本発明は光伝送用ガラスフアイバ（以下、光フ
アイバと称す）の被覆方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field The present invention relates to a method of coating a glass fiber for optical transmission (hereinafter referred to as an optical fiber).
(ロ) 背景技術
光フアイバの被覆構造としては特開昭50−
125754号公報で提案されているように、比較的薄
い一次被覆層と押出被覆などによる二次被覆層か
らなるいわゆる二重被覆構造が一般的である。こ
の二重被覆光フアイバの製造時の一つの問題は二
次被覆層の偏肉である。特に押出被覆層の被覆厚
が100μｍ以下の薄層であつたり、被数の一次被
覆光フアイバを一括して押出被覆するる場合など
は非常に精密な膜厚測定と偏肉制御を必要とす
る。(b) Background technology The coating structure of optical fiber is known from Japanese Patent Application Laid-Open No. 1989-
As proposed in Japanese Patent No. 125754, a so-called double coating structure consisting of a relatively thin primary coating layer and a secondary coating layer formed by extrusion coating or the like is common. One problem in manufacturing this double-coated optical fiber is uneven thickness of the secondary coating layer. In particular, when the extrusion coating layer is thin, less than 100 μm, or when a number of primary coated optical fibers are extruded and coated all at once, extremely precise film thickness measurement and thickness unevenness control are required. .
(ハ) 発明の開示
本発明はこれらの欠点を改良した光フアイバ被
覆方法を提供することを目的とするもので、表面
に導電性プラスチツクが被覆された光フアイバの
１本または複数本に、直流高電圧の印荷により帯
電された樹脂組成物粒子を付着せしめ、その後、
硬化または溶融、硬化させることを特徴とする光
伝送用ガラスフアイバの被覆方法に関するもので
ある。(C) Disclosure of the Invention The present invention aims to provide an optical fiber coating method that improves these drawbacks, and in which one or more optical fibers whose surfaces are coated with conductive plastic are coated with a direct current. Charged resin composition particles are attached by applying a high voltage, and then,
The present invention relates to a method of coating a glass fiber for optical transmission, which is characterized by curing, melting, and curing.
一般に静電塗装を行なう場合には被塗装物は接
地されていて、帯電した粒子によつて運ばれる電
荷を中和する必要がある。そうでないと、仮に粒
子を○＋に帯電させるとすると、最初に付着した粒
子により被塗装物が○＋に帯電してしまい、次に付
着しようとする粒子と反発し、有効な塗膜厚を得
ることができない。 Generally, when performing electrostatic painting, the object to be painted is grounded, and it is necessary to neutralize the charge carried by the charged particles. Otherwise, if the particles were to be charged to ○+, the particles that first adhered would charge the object to ○+, which would repel the next particles and reduce the effective coating thickness. can't get it.
ところがガラスフアイバは10-15Ωcmという非
導電材料であるため接地することができない。本
発明はこの問題を、一次被覆として導電性樹脂を
コーテイングすることにより解決したものであ
る。 However, since glass fiber is a non-conductive material with a resistance of 10 -15 Ωcm, it cannot be grounded. The present invention solves this problem by coating a conductive resin as the primary coating.
本発明の方法では被覆される樹脂組成物の粒子
が静電エネルギーにより光フアイバ上に付着する
ため均一な被覆が可能であり、被覆厚も粒子の帯
電量と光フアイバの通過速度によりコントロール
することができる。 In the method of the present invention, the particles of the resin composition to be coated adhere to the optical fiber by electrostatic energy, so uniform coating is possible, and the coating thickness can be controlled by the amount of charge of the particles and the speed at which the optical fiber passes. I can do it.
本発明において一次被覆材として用いられるも
のはシリコン樹脂、エポキシ樹脂、ウレタン樹
脂、ポリエステル、ポリブタジエンおよびこれら
の変成体で、これらの樹脂組成物中にアセチレン
ブラツク、カーボンフアイバ等の導電性材料を含
有させるか、あるいはこれらの樹脂組成物の被覆
の上に導電性プラスチツクを含有する樹脂組成物
の被膜を形成させてもよい。導電性プラスチツク
あるいは導電性材料の添加量は一次被覆層の導電
率が10-10以上となる量であることが望ましい。 In the present invention, the primary coating materials used are silicone resin, epoxy resin, urethane resin, polyester, polybutadiene, and modified products thereof, and conductive materials such as acetylene black and carbon fiber are contained in these resin compositions. Alternatively, a film of a resin composition containing conductive plastic may be formed on the coating of these resin compositions. The amount of conductive plastic or conductive material added is preferably such that the conductivity of the primary coating layer is 10 -10 or more.
本発明において二次被覆材として用いられるも
のはいわゆる静電塗装が可能なものであれば特に
制限はない。例えばポリエチレン、ナイロン、フ
ツ素樹脂等の熱可塑性樹脂の場合は粉末状にして
帯電させ、この帯電した熱可塑性樹脂粉末の入つ
た容器中を光フアイバを通過させ、該熱可塑性樹
脂の融点以上の温度に加熱し、更に冷却して被覆
を形成させることができる。またエポキシ樹脂、
ウレタン樹脂、ポリエステル等の熱硬化性樹脂の
場合は、空気、窒素ガス等によるスプレーによつ
たり、高速で回転するカツプにより遠心力で樹脂
を飛散させ、スプレーまたはカツプの出口で直流
高電圧により樹脂粒子を帯電させ、微粒子化して
噴霧することができる。一次被覆層および静電塗
装による二次被覆層の厚さについては特に制限は
ないが、ガラスフアイバの表面の保護という観点
から一次被覆は1.0μｍ以上必要であり、通常５〜
30μｍ程度である。 In the present invention, there is no particular restriction on the material used as the secondary coating material as long as it is capable of so-called electrostatic coating. For example, in the case of thermoplastic resins such as polyethylene, nylon, and fluororesin, they are powdered and electrically charged, and an optical fiber is passed through a container containing the charged thermoplastic resin powder. The coating can be formed by heating to a temperature and further cooling. Also, epoxy resin,
In the case of thermosetting resins such as urethane resin and polyester, the resin can be sprayed with air, nitrogen gas, etc., or the resin can be scattered by centrifugal force using a cup rotating at high speed, and then the resin can be sprayed or sprayed with a high DC voltage at the outlet of the cup. The resin particles can be charged, made into fine particles, and then sprayed. There are no particular restrictions on the thickness of the primary coating layer and the secondary coating layer formed by electrostatic coating, but from the perspective of protecting the surface of the glass fiber, the primary coating must be at least 1.0 μm thick, and usually 5 to 5 μm thick.
It is about 30 μm.
本発明方法の流れを第１図に示す。サプライボ
ビン１から１次被覆フアイバ２をくり出し、この
ものに直流高電圧印荷装置６と連がつた樹脂噴霧
装置５から樹脂を噴霧し、次いで硬化炉４を経て
二次被覆フアイバ３を得る。図中、７は接地であ
る。 The flow of the method of the present invention is shown in FIG. A primary coated fiber 2 is drawn out from a supply bobbin 1, and a resin is sprayed onto it from a resin spraying device 5 connected to a DC high voltage application device 6, and then passed through a curing furnace 4 to obtain a secondary coated fiber 3. In the figure, 7 is the ground.
第２図は本発明により得られた光フアイバの構
造を示し、１１は光フアイバ、１２は導電性プラ
スチツクを含有する一次被覆、１３は二次被覆で
ある。第２図ａは１本の光フアイバ素線に本発明
方法を適用した例であるが、本発明方法は特に第
２図ｂに示すような複数本の素線、即ち異形物に
被覆する際に有効であり、精密なコントロール等
をすることなく、均一な被膜を形成することがで
きる。 FIG. 2 shows the structure of the optical fiber obtained according to the invention, in which 11 is the optical fiber, 12 is the primary coating containing conductive plastic, and 13 is the secondary coating. Fig. 2a shows an example in which the method of the present invention is applied to a single optical fiber strand, but the method of the present invention is particularly suitable for coating multiple strands as shown in Fig. 2b, that is, irregularly shaped objects. It is effective for forming a uniform film without precise control.
第１図は本発明の方法の概略を示す図であり、
第２図ａ，ｂは本発明の方法で得られる光フアイ
バの構造を示す断面図である。
FIG. 1 is a diagram schematically showing the method of the present invention,
FIGS. 2a and 2b are cross-sectional views showing the structure of an optical fiber obtained by the method of the present invention.
Claims (1)
した光伝送用ガラスフアイバに、直流高電圧の印
荷により帯電された樹脂組成物粒子を付着せし
め、その後、硬化または溶融硬化させることを特
徴とする、光伝送用ガラスフアイバの被覆方法。1. Charged resin composition particles are attached to a light transmission glass fiber coated with a primary coating layer containing conductive plastic by applying a DC high voltage, and then cured or melt-hardened. , a method for coating glass fibers for optical transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57210600A JPS59102842A (en) | 1982-12-02 | 1982-12-02 | Coating of glass fiber for light transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57210600A JPS59102842A (en) | 1982-12-02 | 1982-12-02 | Coating of glass fiber for light transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59102842A JPS59102842A (en) | 1984-06-14 |
| JPH0327496B2 true JPH0327496B2 (en) | 1991-04-16 |
Family
ID=16592006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57210600A Granted JPS59102842A (en) | 1982-12-02 | 1982-12-02 | Coating of glass fiber for light transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59102842A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2781007B2 (en) * | 1989-05-18 | 1998-07-30 | 株式会社フジクラ | Manufacturing method of grooved rod |
| JP5457528B1 (en) * | 2012-10-25 | 2014-04-02 | 昭和電線ケーブルシステム株式会社 | Method and apparatus for manufacturing intermittent optical fiber ribbon |
-
1982
- 1982-12-02 JP JP57210600A patent/JPS59102842A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59102842A (en) | 1984-06-14 |
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