JPH037616B2 - - Google Patents
Info
- Publication number
- JPH037616B2 JPH037616B2 JP57106741A JP10674182A JPH037616B2 JP H037616 B2 JPH037616 B2 JP H037616B2 JP 57106741 A JP57106741 A JP 57106741A JP 10674182 A JP10674182 A JP 10674182A JP H037616 B2 JPH037616 B2 JP H037616B2
- Authority
- JP
- Japan
- Prior art keywords
- resin composition
- container
- optical fiber
- resin
- coating
- 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
- 238000000034 method Methods 0.000 claims description 17
- 239000011342 resin composition Substances 0.000 claims description 17
- 238000000576 coating method Methods 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 5
- 239000003595 mist Substances 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 2
- 239000013307 optical fiber Substances 0.000 description 13
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 239000007921 spray Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Description
【発明の詳細な説明】
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）の樹脂被覆方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for coating a glass fiber for optical transmission (hereinafter referred to as an optical fiber) with a resin.
光フアイバは大容量、低損失といつた優れた伝
送特性に加え、無誘導、軽量という利点があるこ
とから、新しい伝送方式として実用化されようと
している。光フアイバはその素材がガラスであ
り、200μm以下の細径に加工されることから、そ
の機械的強度は最も重要な特性の一つである。こ
の機械的強度の改善のためには、光フアイバ母材
を溶融線引きした直後に樹脂組成物を塗布、硬化
させ、ガラスの処女強度を保持すると共に、その
後の傷の発生を防ぐいわゆるタンデムプライマリ
ーコート法が採られている（特開昭51−100734）。 Optical fibers are being put into practical use as a new transmission method because they have excellent transmission characteristics such as high capacity and low loss, as well as being non-inductive and lightweight. Optical fiber is made of glass and is processed to a diameter of 200 μm or less, so its mechanical strength is one of its most important properties. In order to improve this mechanical strength, a so-called tandem primary coat is applied and cured immediately after the optical fiber base material is molten and drawn to maintain the virgin strength of the glass and prevent subsequent scratches. The law has been adopted (Japanese Patent Application Laid-Open No. 100734-1973).
この塗布方法としては、従来からダイスデツピ
ング方式、フエルト方式、スプレー方式等が行な
われてきたが、各々一長一短があり、光フアイバ
に非接触で塗布できるという点で、ダイスデツピ
ング方式とスプレー方式が優れており最も多く用
いられている。しかしダイスデツピング方式は２
〜3μm以下の塗膜形成が不可能であり、スプレー
方式では光フアイバに振動を与えずに被覆するこ
とが難かしいという欠点を有している。 Conventionally, the die-depping method, the felt method, the spray method, etc. have been used as this coating method, but each method has its advantages and disadvantages. is superior and is the most commonly used. However, the die depping method is 2
It is impossible to form a coating film with a thickness of ~3 μm or less, and the spray method has the disadvantage that it is difficult to coat the optical fiber without causing vibrations.
本発明は従来のスプレー方式において、光フア
イバに直接、樹脂を噴霧すると光フアイバに振動
を与えて均一な被覆が得られない点を改良するも
ので、線引炉の直下に設置した容器内を霧状の樹
脂組成物で充満させ、この中を溶融線引した光フ
アイバを通すことにより、他の固形物に全く触れ
ることなしに、光フアイバ表面に樹脂組成物の塗
膜を形成させる方法である。 The present invention improves the conventional spray method in which spraying resin directly onto the optical fiber causes vibrations to the optical fiber, making it impossible to obtain a uniform coating. A method of forming a coating film of the resin composition on the surface of the optical fiber by filling it with a mist of the resin composition and passing it through the molten drawn optical fiber, without coming into contact with any other solid matter. be.
本発明において、容器内に霧状の樹脂組成物を
充満させる方法としては、第１図〔ａは縦断面
図、ｂは横断面図〕に示すように、二重壁で構成
されている容器の、外壁１に設けられているスプ
レー２より容器の内壁３と外壁１との間に樹脂を
噴射させ、それによつて生じる霧状の樹脂を内壁
３の内側へ導き、容器内に激しい気流を生じさせ
ることなく霧状の樹脂組成物を浮遊させる方法
（図中、Ｆは通過するフアイバーを示す）がある。
また形成させる塗膜厚の増大を目的として、スプ
レーの先端部に直流高電圧を負荷して樹脂粒子を
帯電させ、粒子の微細化あるいは樹脂被着量の増
大等を計ることができる。 In the present invention, as a method for filling a container with the atomized resin composition, as shown in FIG. The spray 2 provided on the outer wall 1 sprays resin between the inner wall 3 and outer wall 1 of the container, and the resulting mist of resin is guided inside the inner wall 3, creating a strong airflow inside the container. There is a method of suspending a mist-like resin composition without causing it (in the figure, F indicates a passing fiber).
Furthermore, for the purpose of increasing the thickness of the coating film formed, it is possible to charge the resin particles by applying a DC high voltage to the tip of the sprayer, thereby making the particles finer or increasing the amount of resin coating.
本発明方法に用いられる樹脂組成物としては何
ら制限はないが、霧状の樹脂組成物の粒子径を小
さくするために500cps以下の粘度をもつものが望
ましく、常温における粘度が500cps以上の樹脂で
も温度を上げて見かけの粘度を下げることができ
る。このように塗布装置全体あるいは樹脂組成物
の容器を高温にする必要がある場合、紫外線硬化
あるいは電子線硬化樹脂が望ましく、例えばアク
リル変成されたエポキシ樹脂、ウレタン樹脂等が
用いられる。 There are no restrictions on the resin composition used in the method of the present invention, but in order to reduce the particle size of the atomized resin composition, it is desirable to have a viscosity of 500 cps or less, and even resins with a viscosity of 500 cps or more at room temperature may The apparent viscosity can be lowered by increasing the temperature. When it is necessary to heat the entire coating device or the resin composition container to a high temperature as described above, it is desirable to use an ultraviolet curable or electron beam curable resin, such as an acrylic-modified epoxy resin or a urethane resin.
本発明の方法では、光フアイバに他の固形物に
接触することなしに樹脂組成物を塗布できるだけ
でなく、これまでの方法では不可能であつた1μm
以下の塗膜を長さおよび円周方向に均一に形成で
きるという特徴をもつている。また光フアイバの
通過速度、霧状の樹脂組成物の濃度等を適当に選
ぶことにより、塗膜厚をコントロールすることも
できる。また本発明の方法では、光フアイバを、
浮遊している樹脂組成物の粒子中を通過させるた
め、溶融線引されたガラスフアイバが冷却されず
に高温で通過する場合にもなんら問題を生じるこ
とがなく高速線引きが可能である。 The method of the present invention not only allows the resin composition to be applied to the optical fiber without contacting other solid materials, but also coats the resin composition onto the optical fiber with a thickness of 1 μm, which was not possible with conventional methods.
It has the feature that the following coating film can be formed uniformly in the length and circumferential direction. Furthermore, the coating thickness can be controlled by appropriately selecting the passage speed of the optical fiber, the concentration of the atomized resin composition, etc. Further, in the method of the present invention, the optical fiber is
Since the fiber is passed through the suspended particles of the resin composition, high-speed drawing is possible without causing any problems even when the melt-drawn glass fiber is passed through at a high temperature without being cooled.
第１図は本発明方法において霧状の樹脂組成物
を容器中に浮遊させるための具体例を示す図であ
り、ａは縦断面図、ｂは横断面図である。
FIG. 1 is a diagram showing a specific example of suspending a mist resin composition in a container in the method of the present invention, in which a is a longitudinal cross-sectional view and b is a cross-sectional view.
Claims (1)
れた発生装置より容器の内壁と外壁との間に霧状
の樹脂組成物を発生させ、該霧状の樹脂組成物を
内壁の内側へ導き、容器内に激しい気流を生じさ
せることなく該霧状の樹脂組成物を浮遊させ、光
伝送用ガラスフアイバを線引き後、上記霧状の樹
脂組成物が浮遊している容器中を通過させて光伝
送用ガラスフアイバの表面に該樹脂組成物の塗膜
を形成させ、その後、硬化させることからなる光
伝送用ガラスフアイバの被覆方法。1 A generator installed on the outer wall of a double-walled container generates a mist of resin composition between the inner and outer walls of the container, and directs the mist of resin composition inside the inner wall. The atomized resin composition is suspended without creating a strong air current in the container, and after drawing the optical transmission glass fiber, the atomized resin composition is passed through the container in which it is suspended. A method for coating a glass fiber for light transmission, which comprises forming a coating film of the resin composition on the surface of the glass fiber for light transmission, and then curing the coating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57106741A JPS58223644A (en) | 1982-06-23 | 1982-06-23 | Method for coating light transmitting glass fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57106741A JPS58223644A (en) | 1982-06-23 | 1982-06-23 | Method for coating light transmitting glass fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58223644A JPS58223644A (en) | 1983-12-26 |
| JPH037616B2 true JPH037616B2 (en) | 1991-02-04 |
Family
ID=14441341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57106741A Granted JPS58223644A (en) | 1982-06-23 | 1982-06-23 | Method for coating light transmitting glass fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58223644A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5385439A (en) * | 1976-12-31 | 1978-07-27 | Showa Electric Wire & Cable Co | Light fiber coupling lacquar sprayer |
| JPS5622645A (en) * | 1979-08-01 | 1981-03-03 | Nippon Telegr & Teleph Corp <Ntt> | Manufacture of optical fiber |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58172437U (en) * | 1982-05-10 | 1983-11-17 | 日本電信電話株式会社 | Optical fiber coating equipment |
-
1982
- 1982-06-23 JP JP57106741A patent/JPS58223644A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5385439A (en) * | 1976-12-31 | 1978-07-27 | Showa Electric Wire & Cable Co | Light fiber coupling lacquar sprayer |
| JPS5622645A (en) * | 1979-08-01 | 1981-03-03 | Nippon Telegr & Teleph Corp <Ntt> | Manufacture of optical fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58223644A (en) | 1983-12-26 |
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