JPH0239461B2 - HIKARIFUAIBANOSEIZOHOHO - Google Patents
HIKARIFUAIBANOSEIZOHOHOInfo
- Publication number
- JPH0239461B2 JPH0239461B2 JP9601282A JP9601282A JPH0239461B2 JP H0239461 B2 JPH0239461 B2 JP H0239461B2 JP 9601282 A JP9601282 A JP 9601282A JP 9601282 A JP9601282 A JP 9601282A JP H0239461 B2 JPH0239461 B2 JP H0239461B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- base material
- resin coating
- coating
- fiber base
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/104—Coating to obtain optical fibres
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Description
【発明の詳細な説明】
本発明は高強度の光フアイバが製造できる方法
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method by which high strength optical fibers can be manufactured.
既知の通り、光通信等に用いられる光フアイバ
はプリフオームロツドとも称されている石英ガラ
ス系、多成分ガラス系などの光フアイバ母材を紡
糸（加熱延伸）することにより製造される。 As is known, optical fibers used in optical communications and the like are manufactured by spinning (heat-drawing) optical fiber base materials such as quartz glass and multicomponent glass, which are also called preform rods.
一般的な光フアイバは外径が100ミクロン前後
の長尺ガラス繊維であり、したがつて機械的特性
は乏しいといえるが、少なくとも理論的強度に近
似した強度を発揮すべきである。 Typical optical fibers are long glass fibers with an outer diameter of around 100 microns, and therefore have poor mechanical properties, but should at least exhibit strength close to theoretical strength.
しかし実際上の強度と理論的強度との間には少
なからぬ隔たりがあり、これの原因としては光フ
アイバ母材の紡糸工程時、その表面に挾雑物が付
着するとか、該挾雑物により表面傷が発生すると
いつたことが指摘されている。 However, there is a considerable gap between the actual strength and the theoretical strength, and the reason for this is that foreign substances adhere to the surface of the optical fiber base material during the spinning process, or It has been pointed out that surface scratches may occur.
もちろん、これの対策として上記紡糸工程を清
浄な空気や不活性ガス雰囲気中で実施することが
すでに提案されており、さらに紡糸後の光フアイ
バを強度の高い金属酸化物などでコーテイングす
ることも実施されている。 Of course, as a countermeasure to this, it has already been proposed to conduct the spinning process in clean air or an inert gas atmosphere, and it has also been proposed to coat the optical fiber after spinning with a strong metal oxide, etc. has been done.
これらの対策を講じた場合、確かに光フアイバ
の強度は向上するが、手数を要したわりには高度
の機械的特性を示さない。 When these measures are taken, the strength of the optical fiber is certainly improved, but it does not exhibit high mechanical properties, although it requires a lot of effort.
これについていえることは、上記清浄化対策に
限度があつて不可避的な挾雑物の付着や表面傷が
発生し、しかもこのような状態で金属酸化物によ
るコーテイングを施したとしても、挾雑物の除去
や表面傷の消去には効果的でないからである。 What can be said about this is that the cleaning measures mentioned above have their limits, and unavoidable adhesion of foreign substances and surface scratches occur, and even if coating with metal oxide is applied under such conditions, foreign substances will be removed. This is because it is not effective in removing surface scratches or surface scratches.
本発明は上記の問題点に対処すべく、光フアイ
バ母材の段階においてこれの外周に特殊なコーテ
イングを施し、その後、該母材を紡糸して高強度
の光フアイバを製造するようにしたものであり、
以下その具体的方法を図示の実施例により説明す
る。 In order to solve the above-mentioned problems, the present invention applies a special coating to the outer periphery of an optical fiber base material at the stage of producing it, and then spins the base material to produce a high-strength optical fiber. and
The specific method will be explained below using illustrated examples.
第１図において、１は光フアイバ母材、２は該
母材２の外周面に形成されたコーテイング層であ
る。 In FIG. 1, 1 is an optical fiber base material, and 2 is a coating layer formed on the outer peripheral surface of the base material 2. In FIG.
上記における光フアイバ母材１は、石英ガラ
ス、多成分ガラス等よりなり、コーテイング層２
は無機物質含有の樹脂コーテイング材よりなる。 The optical fiber base material 1 in the above is made of quartz glass, multi-component glass, etc., and the coating layer 2
is made of a resin coating material containing an inorganic substance.
ここで用いられる無機物質含有の樹脂コーテイ
ング材は、アルミナ、ジルコニア、黒鉛、シリ
カ、マグネシア、ジルコン、銀、銅の１種以上を
主成分としており、熱硬化性樹旨を副成分として
いる。 The inorganic material-containing resin coating material used here contains one or more of alumina, zirconia, graphite, silica, magnesia, zircon, silver, and copper as a main component, and has a thermosetting resin as a subcomponent.
また、上記にかかげた無機物質は粉末状とか、
微細な繊維状を呈しており、未硬化の状態にある
熱硬化性樹脂中に適当な配合率で混練されてい
る。 In addition, the inorganic substances mentioned above are in powder form,
It has a fine fibrous shape and is kneaded in an appropriate blending ratio into the uncured thermosetting resin.
具体的な無機物質含有の樹脂コーテイング材と
しては、米国アレムコ社製のセラマボンド503、
同550などがあげられる。 Specific examples of resin coating materials containing inorganic substances include Ceramabond 503 manufactured by Alemco Corporation in the United States;
Examples include 550.
本発明では、はじめ光フアイバ母材１の外周に
上述した無機物質含有の樹脂コーテイング材をコ
ーテイングし、これにより厚さ数百μｍのコーテ
イング層２を形成するが、これに際しては塗布手
段、浸漬手段、スプレー手段など、既知の手段で
コーテイングし、その後、当該コーテイング状態
の光フアイバ母材１を電気炉中で500〜600℃程度
に加熱して上記コーテイング層２を硬化させる。 In the present invention, the outer periphery of the optical fiber base material 1 is first coated with the above-mentioned inorganic substance-containing resin coating material to form a coating layer 2 with a thickness of several hundred μm. The optical fiber base material 1 in the coated state is then heated to about 500 to 600° C. in an electric furnace to harden the coating layer 2.
この際の熱硬化時、電気炉内は漬浄な空気、不
活性ガス等により清浄化しておくとよい。 During thermal curing, the inside of the electric furnace is preferably cleaned with clean air, inert gas, etc.
つぎにコーテイング層２を形成した後の上記光
フアイバ母材１は、第２図のごとく1700〜2000℃
程度とした紡糸炉（例えばカーボン抵抗炉）３内
へ導入して紡糸（加熱延伸）し、これにより得ら
れた光フアイバ４を次第のコーテイング槽５でさ
らにコーテイングする。 Next, after forming the coating layer 2, the optical fiber base material 1 is heated at 1700 to 2000°C as shown in FIG.
The optical fiber 4 thus obtained is introduced into a spinning furnace (for example, a carbon resistance furnace) 3 of a certain temperature and subjected to spinning (heating and drawing), and the resulting optical fiber 4 is further coated in a subsequent coating bath 5.
なお、コーテイング槽５を通過することによ
り、光フアイバ４の外周には新たなコーテイング
膜６が形成されることになるが、これの材質とし
てはシリコーン樹脂やナイロンなどが選択され
る。 By passing through the coating tank 5, a new coating film 6 is formed on the outer periphery of the optical fiber 4, and silicone resin, nylon, or the like is selected as the material for this coating film.
上記により製造された光フアイバ４はその母材
段階においてすでに無機物質含有の樹脂コーテイ
ング材によるコーテイング層２が形成されてお
り、その光フアイバ母材１を紡糸して得られる光
フアイバ４は、上記コーテイング層２による非常
に硬い表層膜（例えばAl2O3が生成された膜）を
有することになる。 The optical fiber 4 manufactured as described above already has a coating layer 2 formed of a resin coating material containing an inorganic substance at the stage of the base material, and the optical fiber 4 obtained by spinning the optical fiber base material 1 is as described above. The coating layer 2 has a very hard surface film (for example, a film made of Al 2 O 3 ).
したがつて紡糸時、紡糸後において光フアイバ
４の表面傷は発生せず、そのコーテイング層２も
光フアイバのガラス質部分と強力に密着するの
で、剥落のない、信頼性の高い防護膜となり得
る。 Therefore, no surface scratches occur on the optical fiber 4 during or after spinning, and the coating layer 2 also strongly adheres to the glassy part of the optical fiber, making it possible to provide a highly reliable protective film that does not peel off. .
また、上記コーテイング層２を形成している無
機物質含有の樹脂コーテイング材が強酸性性また
は強アルカリ性であるとき、該樹脂コーテイング
材は硬化前に光フアイバ母材１の段階で付着した
塵埃や表面傷等を溶解除去ならびに消去するよう
になり、こうして強度劣化要因が解消されること
により光フアイバ４の強度はより一層向上する。 Furthermore, when the inorganic substance-containing resin coating material forming the coating layer 2 is strongly acidic or strongly alkaline, the resin coating material may be contaminated with dust or dirt that has adhered to the surface of the optical fiber base material 1 before curing. By dissolving and erasing scratches, etc., the strength deterioration factors are eliminated, and the strength of the optical fiber 4 is further improved.
もちろん母材段階でのコーテイングは光フアイ
バ段階でのそれよりも簡易に実施でき、そのコー
テイング手段も難度のない既知の手段が自由に採
用できるので都合がよい。 Of course, coating at the base material stage can be carried out more easily than at the optical fiber stage, and the coating method is advantageous because known means without any difficulty can be freely employed.
以上説明した通り、本発明に係る光フアイバ母
材の製造方法は、未硬化樹脂中に無機物質を含む
無機物質含有の樹脂コーテイング材により、光フ
アイバ母材の周面をコーテイングして、光フアイ
バ母材の外周に無機物質含有の樹脂コーテイング
層を形成し、かつ、該樹脂コーテイング層を硬化
した後、該樹脂コーテイング層付きの光フアイバ
母材を紡糸することを特徴とするから、高強度の
光フアイバが簡易に製造できることとなる。 As explained above, the method for manufacturing an optical fiber base material according to the present invention includes coating the peripheral surface of the optical fiber base material with an inorganic substance-containing resin coating material containing an inorganic substance in an uncured resin. The method is characterized in that a resin coating layer containing an inorganic substance is formed on the outer periphery of the base material, and after the resin coating layer is cured, the optical fiber base material with the resin coating layer is spun. This means that optical fibers can be manufactured easily.
図面は本発明方法の１実施例を示したもので、
第１図は光フアイバ母材の外周にコーテイング層
を形成した状態の断面図、第２図は同母材の紡糸
状態を示す説明図である。
１……光フアイバ母材、２……コーテイング
層、３……紡糸炉、４……光フアイバ。
The drawing shows one embodiment of the method of the present invention,
FIG. 1 is a cross-sectional view of an optical fiber base material with a coating layer formed on the outer periphery thereof, and FIG. 2 is an explanatory view showing the spinning state of the same base material. 1... Optical fiber base material, 2... Coating layer, 3... Spinning furnace, 4... Optical fiber.
Claims (1)
の樹脂コーテイング材により、光フアイバ母材の
周面をコーテイイングして、光フアイバ母材の外
周に無機物質含有の樹脂コーテイング層を形成
し、かつ、該樹脂コーテイング層を硬化した後、
該樹脂コーテイング層付きの光フアイバ母材を紡
糸することを特徴とする光フアイバの製造方法。 ２ 無機物質含有の樹脂コーテイングがアルミ
ナ、ジルコニア、黒鉛、シリカ、マグネシア、ジ
ルコン、銀、銅の一つ以上を主成分としている特
許請求の範囲第１項記載の光フアイバの製造方
法。 ３ 無機物質含有の樹脂コーテイングが熱硬化性
樹脂を副成分としている特許請求の範囲第１項記
載の光フアイバの製造方法。 ４ 無機物質含有の樹脂コーテイングが強アルカ
リ性または強酸性のいずれかである特許請求の範
囲第１項記載の光フアイバの製造方法。[Scope of Claims] 1. Coating the peripheral surface of an optical fiber base material with an inorganic material-containing resin coating material containing an inorganic material in an uncured resin, and coating the outer periphery of the optical fiber base material with an inorganic material-containing resin coating material. After forming the layer and curing the resin coating layer,
A method for producing an optical fiber, comprising spinning the optical fiber base material provided with the resin coating layer. 2. The method for producing an optical fiber according to claim 1, wherein the inorganic substance-containing resin coating has one or more of alumina, zirconia, graphite, silica, magnesia, zircon, silver, and copper as a main component. 3. The method for manufacturing an optical fiber according to claim 1, wherein the inorganic substance-containing resin coating has a thermosetting resin as a subcomponent. 4. The method for producing an optical fiber according to claim 1, wherein the inorganic material-containing resin coating is either strongly alkaline or strongly acidic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9601282A JPH0239461B2 (en) | 1982-06-04 | 1982-06-04 | HIKARIFUAIBANOSEIZOHOHO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9601282A JPH0239461B2 (en) | 1982-06-04 | 1982-06-04 | HIKARIFUAIBANOSEIZOHOHO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58213646A JPS58213646A (en) | 1983-12-12 |
| JPH0239461B2 true JPH0239461B2 (en) | 1990-09-05 |
Family
ID=14153281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9601282A Expired - Lifetime JPH0239461B2 (en) | 1982-06-04 | 1982-06-04 | HIKARIFUAIBANOSEIZOHOHO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0239461B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6767579B1 (en) | 1998-11-24 | 2004-07-27 | Corning Incorporated | Methods for protecting silica-containing article in optical fiber manufacturing |
| AU1477200A (en) * | 1998-11-24 | 2000-06-13 | Corning Incorporated | Method of applying protective coating to silica-containing article |
-
1982
- 1982-06-04 JP JP9601282A patent/JPH0239461B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58213646A (en) | 1983-12-12 |
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