JPS6243940B2 - - Google Patents
Info
- Publication number
- JPS6243940B2 JPS6243940B2 JP55111486A JP11148680A JPS6243940B2 JP S6243940 B2 JPS6243940 B2 JP S6243940B2 JP 55111486 A JP55111486 A JP 55111486A JP 11148680 A JP11148680 A JP 11148680A JP S6243940 B2 JPS6243940 B2 JP S6243940B2
- Authority
- JP
- Japan
- Prior art keywords
- coating
- optical fiber
- coating device
- coating layer
- coated optical
- 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
- 238000000576 coating method Methods 0.000 claims description 59
- 239000011248 coating agent Substances 0.000 claims description 58
- 239000013307 optical fiber Substances 0.000 claims description 40
- 239000011247 coating layer Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Description
【発明の詳細な説明】
本発明は通信などに用いられる光フアイバの被
覆方法に関し、その目的とするところは、伝送特
性のよい被覆光フアイバが簡易に得られるように
したものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of coating an optical fiber used for communication, etc., and an object thereof is to easily obtain a coated optical fiber with good transmission characteristics.
通信用を主体にして開発されている光フアイバ
は、実用上の強度を確保するため、その外周に数
次の被覆層が形成されており、かつ、この被覆形
成に際しては、強度に優れる被覆層だけでなく、
緩衝効果やマイクロベンド阻止効果に優れた被覆
層をも組みあわせて伝送特性に影響のないように
している。 Optical fibers, which are being developed mainly for communications, have several coating layers formed around their outer periphery in order to ensure practical strength. but also
A coating layer with excellent buffering and microbend prevention effects is also combined to ensure that transmission characteristics are not affected.
通常、伝送特性への対策として設けられる上記
被覆層は、軟質のものであつたり、ゼリー状のご
とき粘性を有するものであり、この被覆層は、裸
光フアイバの外周に直接被覆されるか、または、
間接被覆であつてもできるだけ裸光フアイバ外周
に近づけて形成される。 Usually, the above-mentioned coating layer provided as a measure against transmission characteristics is soft or has a jelly-like viscosity, and this coating layer is coated directly on the outer periphery of the bare optical fiber, or or
Even if it is an indirect coating, it is formed as close to the outer periphery of the bare optical fiber as possible.
一方、強度面で優れる被覆層は、上記の軟らか
い被覆層を被うように形成される。 On the other hand, the coating layer which is excellent in strength is formed to cover the above-mentioned soft coating layer.
こうした場合の被覆時、軟らかい被覆層のつぎ
に形成する被覆層の被覆手段が難しく、この際に
軟らかい被覆層を扁肉させたり、傷つけたりして
いる。 When coating in such a case, it is difficult to coat the next soft coating layer, and the soft coating layer may be thinned or damaged at this time.
また、ゼリー状とした軟らかい被覆層を形成す
る際、裸光フアイバの外周に所定間隙をおいて強
度のある被覆層を被せ、その間隙内に軟らかい被
覆層を充填形成するといつた手段を採られている
が、この手段も微間隙内への充填であるため簡易
でなく、裸光フアイバを基準にした被覆層の形成
順位が逆順位になるのも、連続被覆工程を採用す
る上で好ましくない。 In addition, when forming a jelly-like soft coating layer, a method is adopted in which a strong coating layer is placed around the outer periphery of the bare optical fiber with a predetermined gap, and a soft coating layer is filled in the gap. However, this method is not simple because it involves filling into minute gaps, and the fact that the order of formation of the coating layer is reversed based on the bare optical fiber is not desirable when adopting a continuous coating process. .
本発明は上記の問題点を解消して所期の目的を
達成しようとするもので、以下その方法を図示の
実施例に基き説明する。 The present invention aims to solve the above-mentioned problems and achieve the intended purpose, and the method thereof will be explained below based on the illustrated embodiments.
第１図は本発明の１実施例であり、同図におけ
る第１被覆装置１は、容器２と該容器２の下部に
設けられたダイス３とよりなり、第２被覆装置４
も容器５と該容器５の下部に設けられたダイス６
とよりなつている。 FIG. 1 shows one embodiment of the present invention, and a first coating device 1 in the figure includes a container 2 and a die 3 provided at the bottom of the container 2, and a second coating device 4.
A container 5 and a die 6 provided at the bottom of the container 5
It's getting more and more familiar.
上記における容器２内には、エポキシ樹指、シ
リコーン樹脂粘度の高い液状の被覆材料Ａが収容
されており、一方、容器４内にはエポキシアクリ
レート等からなる紫外線架橋性（ULUTRA
VAIOLET Ray cure）の被覆材料Ｂが液状で収
容されている。 In the above container 2, a liquid coating material A having high viscosity such as epoxy resin or silicone resin is stored.On the other hand, in the container 4, ultraviolet cross-linking material (ULUTRA) made of epoxy acrylate or the like is stored.
Coating material B of VAIOLET Ray cure) is contained in liquid form.
そして第１被覆装置１と第２被覆装置４とは、
一方１が上位、他方４が下位となるように相対配
置され、かつ、第２被覆装置４の下位に、紫外線
ランプ等をそなえた紫外線照射装置７が配置され
ている。 The first coating device 1 and the second coating device 4 are
They are arranged relative to each other so that one side 1 is on the upper side and the other side 4 is on the lower side, and an ultraviolet irradiation device 7 equipped with an ultraviolet lamp or the like is placed below the second coating device 4.
本発明の１実施例では、上記第１図においてプ
リフオームロツドを紡糸することにより得られた
当該紡糸直後の裸光フアイバF1を、第１被覆装
置１の容器２内に導入すると共に該容器２内の被
覆材料Ａ中に浸漬し、かつ、裸光フアイバF1が
ダイス３を通つて容器２外へ出るとき、その外周
に付着している被覆材料Ａを所定厚に成形して１
次被覆光フアイバF2とするのである。 In one embodiment of the present invention, the as-spun bare optical fiber F 1 obtained by spinning the preform rod in FIG. 1 is introduced into the container 2 of the first coating device 1 and When the bare optical fiber F1 is immersed in the coating material A in the container 2 and exits the container 2 through the die 3, the coating material A adhering to its outer periphery is molded to a predetermined thickness.
The next coated optical fiber F2 is used.
つぎに上記被覆光フアイバF2を第２被覆装置
４の容器５内へ連続的に導入すると共に該容器５
内の被覆材料Ｂ中に浸漬し、かつ、被覆光フアイ
バF2がダイス６を通つて容器５外へ出るとき、
その外周に付着している被覆材料Ｂを所定厚に成
形して２次被覆光フアイバF3とするのであり、
容器５外へ出た後の該被覆光フアイバF3は、紫
外線照射装置７から照射された紫外線を受け、こ
れにより、当該光フアイバF3に付着の上記被覆
材料Ｂは完全に架橋される。 Next, the coated optical fiber F 2 is continuously introduced into the container 5 of the second coating device 4 and
and when the coated optical fiber F2 exits the container 5 through the die 6,
The coating material B attached to the outer periphery is molded to a predetermined thickness to form a secondary coated optical fiber F3 .
The coated optical fiber F 3 after coming out of the container 5 receives ultraviolet rays irradiated from the ultraviolet irradiation device 7, whereby the coating material B attached to the optical fiber F 3 is completely crosslinked.
第２図はこうして得られた被覆光フアイバの断
面形状を示しており、同図中、A′は被覆材料Ａ
による被覆層、B′は被覆材料Ｂによる被覆層を示
している。 Figure 2 shows the cross-sectional shape of the coated optical fiber thus obtained, in which A' is the coating material A.
B' indicates a coating layer made of coating material B.
なお、第２図に示した被覆光フアイバの外周に
は、必要に応じ、他の被覆層が設けられることも
ある。 Note that other coating layers may be provided on the outer periphery of the coated optical fiber shown in FIG. 2, if necessary.
以上説明した通り、本発明は裸光フアイバの外
周に被覆層を形成する方法において、粘性の高い
液状の被覆材料が収容されたダイス型の第１被覆
装置と、紫外線架橋性の被覆材料が収容されたダ
イス型の第２被覆装置とを、第１被覆装置が上
位、第２被覆装置が下位となるよう相対配置して
おき、はじめ、上記裸光フアイバを第１被覆装置
内に引き通すことにより、その裸光フアイバの外
周に上記高粘性液状被覆材料を塗布かつ成形して
１次被覆光フアイバをつくり、つぎに、その１次
被覆光フアイバを第２被覆装置内に引き通すこと
により、該１次被覆光フアイバの外周に上記紫外
線架橋性被覆材料を塗布かつ成形して２次被覆光
フアイバをつくり、その後、上記紫外線架橋性樹
脂による被覆層に紫外線を照射してその被覆層を
架橋することを特徴とする。 As explained above, the present invention provides a method for forming a coating layer around the outer periphery of a bare optical fiber. A dice-shaped second coating device and a second coating device are arranged relative to each other so that the first coating device is on the upper side and the second coating device is on the lower side, and the bare optical fiber is first drawn through the first coating device. By applying and molding the highly viscous liquid coating material on the outer periphery of the bare optical fiber to produce a primary coated optical fiber, and then drawing the primary coated optical fiber into a second coating device, The UV-crosslinkable coating material is applied to the outer periphery of the primary coated optical fiber and molded to form a secondary coated optical fiber, and then the coating layer of the UV-crosslinkable resin is irradiated with ultraviolet rays to cross-link the coating layer. It is characterized by
かかる本発明方法の場合、１次被覆用の被覆材
料が高粘性であるので、第１被覆装置側から第２
被覆装置内へと進入した１次被覆光フアイバの被
覆層（１次被覆層）が、その第２被覆装置内の紫
外線架橋性樹脂と混じり合うことがなく、偏肉、
損傷等も起こりがたく、以下は第２被覆装置内を
出た２次被覆光フアイバの被覆層（２次被覆層）
を紫外線架橋するだけで所望の被覆層を有する被
覆光フアイバが得られる。 In the case of the method of the present invention, since the coating material for the primary coating is highly viscous, the coating material is transferred from the first coating device side to the second coating device.
The coating layer (primary coating layer) of the primary coated optical fiber that has entered the coating device does not mix with the ultraviolet crosslinkable resin in the second coating device, preventing uneven thickness,
Damage is unlikely to occur, and the following is the coating layer (secondary coating layer) of the secondary coating optical fiber that exits the second coating device.
A coated optical fiber with the desired coating layer can be obtained simply by UV crosslinking.
したがつて上記１次被覆、２次被覆が良好な状
態で連続的に実施でき、特性のよい被覆光フアイ
バが能率よく得られる。 Therefore, the above-mentioned primary coating and secondary coating can be carried out continuously in good condition, and a coated optical fiber with good characteristics can be efficiently obtained.
第１図は本発明方法の１実施例を略示した説明
図、第２図は本発明方法の上記実施例により得ら
れた被覆光フアイバの断面図である。
F1……裸光フアイバ、F2……１次の被覆光フ
アイバ、F3……２次の被覆光フアイバ、Ａ……
高粘性の被覆材料、A′……１次の被覆層、Ｂ…
…紫外線架橋性の被覆材料、B′……２次の被覆
層、１……１次被覆装置、２……１次被覆装置の
容器、３……１次被覆装置のダイス、４……２次
被覆装置、５……２次被覆装置の容器、６……２
次被覆装置のダイス、７……紫外線照射装置。
FIG. 1 is an explanatory diagram schematically showing one embodiment of the method of the present invention, and FIG. 2 is a sectional view of a coated optical fiber obtained by the above embodiment of the method of the present invention. F 1 ... Bare optical fiber, F 2 ... Primary coated optical fiber, F 3 ... Secondary coated optical fiber, A...
High viscosity coating material, A'... primary coating layer, B...
...UV crosslinkable coating material, B'...Secondary coating layer, 1...Primary coating device, 2...Container of primary coating device, 3...Dice of primary coating device, 4...2 Secondary coating device, 5...Container of secondary coating device, 6...2
Dice of the next coating device, 7... Ultraviolet irradiation device.
Claims (1)
において、粘性の高い液状の被覆材料が収容され
たダイス型の第１被覆装置と、紫外線架橋性の被
覆材料が収容されたダイス型の第２被覆装置と
を、第１被覆装置が上位、第２被覆装置が下位と
なるよう相対配置しておき、はじめ、上記裸光フ
アイバを第１被覆装置内に引き通すことにより、
その裸光フアイバの外周に上記高粘性液状被覆材
料を塗布かつ成形して１次被覆光フアイバをつく
り、つぎに、その１次被覆光フアイバを第２被覆
装置内に引き通すことにより、該１次被覆光フア
イバの外周に上記紫外線架橋性被覆材料を塗布か
つ成形して２次被覆光フアイバをつくり、その
後、上記紫外線架橋性被覆材料による被覆層に紫
外線を照射してその被覆層を架橋することを特徴
とする光フアイバの被覆方法。1 In a method for forming a coating layer around the outer periphery of a bare optical fiber, a first die-shaped coating device containing a highly viscous liquid coating material and a second die-shaped coating device containing an ultraviolet crosslinkable coating material are used. The coating devices are arranged relative to each other so that the first coating device is on the upper side and the second coating device is on the lower side, and by first pulling the bare optical fiber through the first coating device,
The above-mentioned high viscosity liquid coating material is coated on the outer periphery of the bare optical fiber and molded to form a primary coated optical fiber, and then the primary coated optical fiber is drawn into a second coating device. The above-mentioned ultraviolet crosslinkable coating material is applied to the outer periphery of the next coated optical fiber and molded to produce a second coated optical fiber, and then the coating layer made of the above ultraviolet crosslinkable coating material is irradiated with ultraviolet rays to crosslink the coating layer. A method for coating an optical fiber, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11148680A JPS5738347A (en) | 1980-08-13 | 1980-08-13 | Coating method for optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11148680A JPS5738347A (en) | 1980-08-13 | 1980-08-13 | Coating method for optical fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5738347A JPS5738347A (en) | 1982-03-03 |
| JPS6243940B2 true JPS6243940B2 (en) | 1987-09-17 |
Family
ID=14562482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11148680A Granted JPS5738347A (en) | 1980-08-13 | 1980-08-13 | Coating method for optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5738347A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0238232U (en) * | 1988-09-06 | 1990-03-14 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53139545A (en) * | 1977-05-11 | 1978-12-05 | Grace W R & Co | Coating method of optical fiber |
| JPS5442496A (en) * | 1977-09-08 | 1979-04-04 | Nippon Telegraph & Telephone | Production of optical wave guide glass fiber |
| JPS5542246A (en) * | 1978-09-20 | 1980-03-25 | Nippon Telegr & Teleph Corp <Ntt> | Production of optical fiber |
| JPS5542245A (en) * | 1978-09-20 | 1980-03-25 | Nippon Telegr & Teleph Corp <Ntt> | Production of optical fiber |
| JPS5542244A (en) * | 1978-09-20 | 1980-03-25 | Nippon Telegr & Teleph Corp <Ntt> | Production of optical fiber |
| JPS569240A (en) * | 1979-06-29 | 1981-01-30 | Siemens Ag | Manufacture of antiswelling light conductive tube |
| JPS56134539A (en) * | 1980-02-25 | 1981-10-21 | Western Electric Co | Optical fiber with ultraviolet ray cured coating |
-
1980
- 1980-08-13 JP JP11148680A patent/JPS5738347A/en active Granted
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53139545A (en) * | 1977-05-11 | 1978-12-05 | Grace W R & Co | Coating method of optical fiber |
| JPS5442496A (en) * | 1977-09-08 | 1979-04-04 | Nippon Telegraph & Telephone | Production of optical wave guide glass fiber |
| JPS5542246A (en) * | 1978-09-20 | 1980-03-25 | Nippon Telegr & Teleph Corp <Ntt> | Production of optical fiber |
| JPS5542245A (en) * | 1978-09-20 | 1980-03-25 | Nippon Telegr & Teleph Corp <Ntt> | Production of optical fiber |
| JPS5542244A (en) * | 1978-09-20 | 1980-03-25 | Nippon Telegr & Teleph Corp <Ntt> | Production of optical fiber |
| JPS569240A (en) * | 1979-06-29 | 1981-01-30 | Siemens Ag | Manufacture of antiswelling light conductive tube |
| JPS56134539A (en) * | 1980-02-25 | 1981-10-21 | Western Electric Co | Optical fiber with ultraviolet ray cured coating |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0238232U (en) * | 1988-09-06 | 1990-03-14 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5738347A (en) | 1982-03-03 |
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