JP7052100B1 - Fiber optic tape core wire - Google Patents
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- JP7052100B1 JP7052100B1 JP2021009657A JP2021009657A JP7052100B1 JP 7052100 B1 JP7052100 B1 JP 7052100B1 JP 2021009657 A JP2021009657 A JP 2021009657A JP 2021009657 A JP2021009657 A JP 2021009657A JP 7052100 B1 JP7052100 B1 JP 7052100B1
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- 239000000835 fiber Substances 0.000 title 1
- 239000013307 optical fiber Substances 0.000 claims abstract description 122
- 229920005989 resin Polymers 0.000 claims abstract description 51
- 239000011347 resin Substances 0.000 claims abstract description 51
- 239000000049 pigment Substances 0.000 claims description 7
- 238000003908 quality control method Methods 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 26
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000004840 adhesive resin Substances 0.000 description 3
- 229920006223 adhesive resin Polymers 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000001057 purple pigment Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
【課題】 ラインでも容易に連結部の品質管理が可能な間欠接着型の光ファイバテープ心線等を提供する。【解決手段】 光ファイバテープ心線１は、複数の着色された光ファイバ単心線３ａ、３ｂ、３ｃ、３ｄが並列されて、隣り合う光ファイバ単心線同士が、連結樹脂によって連結されて構成される。光ファイバ単心線３ａ、３ｂ、３ｃ、３ｄ同士は、隙間をあけて配置される。隣り合う光ファイバ単心線３ａ、３ｂ、３ｃ、３ｄ同士は、長手方向に所定の間隔をあけて、それぞれ間欠で連結部５により接着される。すなわち、隣り合う光ファイバ単心線３ａ、３ｂ、３ｃ、３ｄ同士の連結部５は、光ファイバ単心線の長手方向に対して間欠的に配置される。連結部５は、不透明な連結樹脂で構成される。例えば、連結樹脂の、ＪＩＳ Ｋ ７１３６で規定されるヘイズ値は、１．５％以上３％以下であることが望ましい。【選択図】図１PROBLEM TO BE SOLVED: To provide an intermittent adhesive type optical fiber tape core wire or the like capable of easily quality control of a connecting portion even on a line. SOLUTION: In an optical fiber tape core wire 1, a plurality of colored optical fiber single core wires 3a, 3b, 3c, 3d are arranged in parallel, and adjacent optical fiber single core wires are connected to each other by a connecting resin. It is composed. The optical fiber single core wires 3a, 3b, 3c, and 3d are arranged with a gap between them. Adjacent optical fiber single core wires 3a, 3b, 3c, and 3d are intermittently bonded to each other by the connecting portion 5 at predetermined intervals in the longitudinal direction. That is, the connecting portions 5 of the adjacent optical fiber single core wires 3a, 3b, 3c, and 3d are intermittently arranged with respect to the longitudinal direction of the optical fiber single core wires. The connecting portion 5 is made of an opaque connecting resin. For example, it is desirable that the haze value of the connecting resin specified by JIS K 7136 is 1.5% or more and 3% or less. [Selection diagram] Fig. 1
Description
本発明は、複数の光ファイバ単心線が連結された光ファイバテープ心線に関するものである。 The present invention relates to an optical fiber tape core wire in which a plurality of optical fiber single core wires are connected.
多量のデータを高速で伝送するための光ファイバ心線として、ケーブルへの収納や作業の簡易化のため、複数本の光ファイバ単心線（以下、光ファイバ単心線とする）が並列に配置されて接着された光ファイバテープ心線が用いられている。光ファイバテープ心線は、並列した光ファイバ単心線を全長にわたって樹脂で固着されたものが用いられている他、光ファイバ単心線同士が間欠的に接着されたものがある。光ファイバ単心線同士の間欠的な接着は、集線密度の向上や曲げによる伝送ロスの低減、単心化をしやすくするなどの特徴を持つ。 As an optical fiber core wire for transmitting a large amount of data at high speed, multiple optical fiber single core wires (hereinafter referred to as optical fiber single core wires) are connected in parallel for storage in a cable and simplification of work. An optical fiber tape core wire that has been arranged and adhered is used. As the optical fiber tape core wire, one in which parallel optical fiber single core wires are fixed with a resin over the entire length is used, and there is also one in which optical fiber single core wires are intermittently bonded to each other. Intermittent adhesion between optical fiber single cores has features such as improvement of concentrating density, reduction of transmission loss due to bending, and facilitation of single core.
このような光ファイバテープ心線は、複数の光ファイバ単心線をライン中で並列させて、所定に位置に接着樹脂を塗布して硬化させることで製造される。この際、間欠的に光ファイバ単心線同士が確実に接着されているかどうかを確認する方法として、一方から光を当てて光ファイバテープ心線を透過した光の光量分布を検出する方法がある（特許文献１）。 Such an optical fiber tape core wire is manufactured by arranging a plurality of optical fiber single core wires in parallel in the line, applying an adhesive resin at a predetermined position, and curing the optical fiber tape core wire. At this time, as a method of intermittently confirming whether or not the optical fiber single core wires are securely adhered to each other, there is a method of irradiating light from one side to detect the light amount distribution of the light transmitted through the optical fiber tape core wire. (Patent Document 1).
しかし、従来の方法では精度が高い検出は困難であった。例えば、接着による連結部からも光が透過するため、接着不良という判断がなされる恐れがある。これに対し、わずかな光量変化でも接着樹脂と判断するように感度をあげていくと、接着樹脂の塗布が足りていない部位も、合格判定がなされる恐れがある。 However, it is difficult to detect with high accuracy by the conventional method. For example, since light is transmitted from the connecting portion due to adhesion, it may be determined that the adhesion is poor. On the other hand, if the sensitivity is increased so that even a slight change in the amount of light can be judged as an adhesive resin, there is a possibility that a pass judgment will be made even in a portion where the adhesive resin is not sufficiently applied.
本発明は、このような問題に鑑みてなされたもので、ラインでも容易に連結部の品質管理が可能な間欠接着型の光ファイバテープ心線等を提供することを目的とする。 The present invention has been made in view of such a problem, and an object of the present invention is to provide an intermittent adhesive type optical fiber tape core wire or the like capable of easily quality control of a connecting portion even in a line.
前述した目的を達するために本発明は、複数の光ファイバ単心線が並列されて、隣り合う前記光ファイバ単心線同士が、連結樹脂によって連結された光ファイバテープ心線であって、隣り合う前記光ファイバ単心線同士の連結部が、前記光ファイバ単心線の長手方向に対して間欠的に配置されており、前記連結樹脂が、不透明であり、前記連結樹脂の、ＪＩＳ Ｋ ７１３６で規定されるヘイズ値が１．５％以上３％以下であり、前記光ファイバ単心線は着色され、ヘイズ値が９０％以上であることを特徴とする光ファイバテープ心線である。 In order to achieve the above-mentioned object, the present invention is an optical fiber tape core wire in which a plurality of optical fiber single core wires are arranged in parallel and the adjacent optical fiber single core wires are connected by a connecting resin and are adjacent to each other. The connecting portion between the matching optical fiber single core wires is intermittently arranged with respect to the longitudinal direction of the optical fiber single core wire, the connecting resin is opaque, and the JIS K of the connecting resin. The optical fiber tape core wire is characterized in that the haze value defined by 7136 is 1.5% or more and 3% or less, the optical fiber single core wire is colored, and the haze value is 90% or more. ..
隣り合う前記光ファイバ単心線同士の間には５０μｍ以上の隙間が形成されることが望ましい。 It is desirable that a gap of 50 μm or more is formed between the adjacent optical fiber single core wires .
前記連結樹脂には、顔料が混入されており、着色されていてもよい。 The connecting resin contains a pigment and may be colored.
前記連結樹脂には、気泡が混入していてもよい。 Bubbles may be mixed in the connecting resin.
本発明によれば、光ファイバ単心線同士を連結する連結樹脂が不透明であるため、連結樹脂を透過する光を低減することができる。このため、一般的な透明樹脂の場合と比較して、より感度よく連結樹脂を検出可能である。 According to the present invention, since the connecting resin for connecting the optical fiber single core wires is opaque, the light transmitted through the connecting resin can be reduced. Therefore, the connecting resin can be detected more sensitively than in the case of a general transparent resin.
この際、ＪＩＳ Ｋ ７１３６で規定されるヘイズ値が１．５％以上であれば、より効果的である。また、ＪＩＳ Ｋ ７１３６で規定されるヘイズ値が３％以下であれば、見た目にも優れ、光ファイバ単心線の着色層を視認可能であるため、取り扱い性にも優れる。 At this time, it is more effective if the haze value defined by JIS K 7136 is 1.5% or more. Further, when the haze value defined by JIS K 7136 is 3% or less, the appearance is excellent and the colored layer of the optical fiber single core wire can be visually recognized, so that the handling property is also excellent.
また、連結樹脂に顔料を含有させることで、容易に連結樹脂のヘイズ値を調整可能である。 Further, by incorporating the pigment in the connecting resin, the haze value of the connecting resin can be easily adjusted.
また、連結樹脂に微細な気泡を混入させることでも、連結樹脂を不透明にすることができる。 Further, the connecting resin can be made opaque by mixing fine bubbles into the connecting resin.
本発明によれば、ラインでも容易に連結部の品質管理が可能な間欠接着型の光ファイバテープ心線等を提供することができる。 According to the present invention, it is possible to provide an intermittent adhesive type optical fiber tape core wire or the like whose quality control of a connecting portion can be easily performed even on a line.
以下、図面を参照しながら、本発明の実施形態について説明する。図１は、光ファイバテープ心線１を示す斜視図であり、図２は、光ファイバテープ心線１を示す断面図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an optical fiber tape core wire 1, and FIG. 2 is a cross-sectional view showing an optical fiber tape core wire 1.
光ファイバテープ心線１は、複数の光ファイバ単心線３ａ、３ｂ、３ｃ、３ｄが並列されて、隣り合う光ファイバ単心線同士が、連結樹脂によって連結されて構成される。なお、以下の説明において、４本の光ファイバ単心線３ａ、３ｂ、３ｃ、３ｄにより構成される例を示すが、本発明はこれに限られず、複数の光ファイバ単心線からなる光ファイバテープ心線であれば適用可能である。 The optical fiber tape core wire 1 is configured such that a plurality of optical fiber single core wires 3a, 3b, 3c, and 3d are arranged in parallel, and adjacent optical fiber single core wires are connected to each other by a connecting resin. In the following description, an example composed of four optical fiber single core wires 3a, 3b, 3c, and 3d will be shown, but the present invention is not limited to this, and an optical fiber composed of a plurality of optical fiber single core wires is shown. Applicable if it is a tape core wire.
図２に示すように、光ファイバ単心線３ａ、３ｂ、３ｃ、３ｄ同士は、隙間をあけて配置される。ここで、詳細な図示は省略するが、光ファイバ単心線３ａ、３ｂ、３ｃ、３ｄは、それぞれ、内部のガラスファイバと、ガラスファイバを覆うように形成されるプライマリ及びセカンダリ層（樹脂層）と、最外周の着色層とを有する。すなわち、光ファイバ単心線３ａ、３ｂ、３ｃ、３ｄは着色されている。なお、着色層は、光ファイバ単心線３ａ、３ｂ、３ｃ、３ｄを識別するため、それぞれ別の色とし、かつ視認性向上のためヘイズ値は９０％以上となるよう色を調整している。すなわち、光ファイバ単心線３ａ、３ｂ、３ｃ、３ｄは、着色層によって、側方からの光をほぼ透過しない。 As shown in FIG. 2, the optical fiber single core wires 3a, 3b, 3c, and 3d are arranged with a gap between them. Here, although detailed illustration is omitted, the optical fiber single core wires 3a, 3b, 3c, and 3d are the internal glass fiber and the primary and secondary layers (resin layers) formed so as to cover the glass fiber, respectively. And the outermost colored layer. That is, the optical fiber single core wires 3a, 3b, 3c, and 3d are colored. The colored layer has a different color for identifying the optical fiber single core wires 3a, 3b, 3c, and 3d, and the color is adjusted so that the haze value is 90% or more for improving visibility. .. That is, the optical fiber single core wires 3a, 3b, 3c, and 3d hardly transmit light from the side due to the colored layer.
隣り合う光ファイバ単心線３ａ、３ｂ、３ｃ、３ｄ同士は、長手方向に所定の間隔をあけて、それぞれ間欠で連結部５により接着される。すなわち、隣り合う光ファイバ単心線３ａ、３ｂ、３ｃ、３ｄ同士の連結部５は、光ファイバ単心線の長手方向に対して間欠的に配置される。なお、光ファイバテープ心線１の幅方向に隣り合う連結部５同士は、例えば、光ファイバテープ心線１の長手方向に対して千鳥状に配置される。 Adjacent optical fiber single core wires 3a, 3b, 3c, and 3d are intermittently bonded to each other by the connecting portion 5 at predetermined intervals in the longitudinal direction. That is, the connecting portions 5 of the adjacent optical fiber single core wires 3a, 3b, 3c, and 3d are intermittently arranged with respect to the longitudinal direction of the optical fiber single core wires. The connecting portions 5 adjacent to each other in the width direction of the optical fiber tape core wire 1 are arranged in a staggered manner with respect to the longitudinal direction of the optical fiber tape core wire 1, for example.
すなわち、光ファイバテープ心線１の長手方向に対する光ファイバ単心線３ｂ、３ｃ間の接着位置（連結部５）は、隣り合う光ファイバ単心線３ａ、３ｂ間および光ファイバ単心線３ｃ、３ｄ間の接着位置（連結部５）に対して、略半ピッチずれて形成される。したがって、光ファイバ単心線３ａ、３ｂ間の接着位置と、光ファイバ単心線３ｃ、３ｄ間の接着位置とは同一位置となる。 That is, the bonding positions (connecting portion 5) between the optical fiber single core wires 3b and 3c with respect to the longitudinal direction of the optical fiber tape core wire 1 are the adjacent optical fiber single core wires 3a and 3b and the optical fiber single core wires 3c. It is formed with a deviation of approximately half a pitch with respect to the bonding position (connecting portion 5) between 3d. Therefore, the bonding position between the optical fiber single core wires 3a and 3b and the bonding position between the optical fiber single core wires 3c and 3d are the same positions.
なお、連結部５の配置は、千鳥状である場合には限定されず、隣り合う光ファイバ単心線同士の連結部５が長手方向に間欠的に配置されれば、その形態は限定されない。但し、光ファイバテープ心線１の長手方向に対する、隣り合う光ファイバ単心線同士のそれぞれの連結部５は、全てほぼ同一のピッチで形成されることが望ましい。このため、光ファイバテープ心線１の敷設時等に、光ファイバ単心線の配列が乱れることがない。 The arrangement of the connecting portions 5 is not limited to the case of a staggered shape, and the form is not limited as long as the connecting portions 5 of the adjacent optical fiber single core wires are intermittently arranged in the longitudinal direction. However, it is desirable that all the connecting portions 5 of the adjacent optical fiber single core wires in the longitudinal direction of the optical fiber tape core wire 1 are formed at substantially the same pitch. Therefore, the arrangement of the optical fiber single core wires is not disturbed when the optical fiber tape core wires 1 are laid.
連結部５は、不透明な連結樹脂で構成される。例えば、連結樹脂の、ＪＩＳ Ｋ ７１３６で規定されるヘイズ値は、１．５％以上３％以下であることが望ましい。連結樹脂のヘイズ値が１．５％未満であると、連結部５を透過する光量が多くなるため、連結樹脂を不透明とした効果が小さい。 The connecting portion 5 is made of an opaque connecting resin. For example, it is desirable that the haze value of the connecting resin specified by JIS K 7136 is 1.5% or more and 3% or less. When the haze value of the connecting resin is less than 1.5%, the amount of light transmitted through the connecting portion 5 increases, so that the effect of making the connecting resin opaque is small.
一方、連結樹脂のヘイズ値が３％を超えると、連結部５がくすんで見えるため、見た目が悪く、また、連結樹脂で覆われた光ファイバ単心線の着色層の色の識別が困難となる。さらに、連結樹脂が紫外線硬化樹脂である場合には、連結樹脂のヘイズ値が３％を超えると、光を照射した際に、光が内部まで十分に到達せず、硬化に時間を要し、紫外線ランプの必要台数が増える、または製造速度を上げられないと言った課題が生じる。 On the other hand, when the haze value of the connecting resin exceeds 3%, the connecting portion 5 looks dull, which makes the appearance unsightly, and it is difficult to distinguish the color of the colored layer of the optical fiber single core wire covered with the connecting resin. Become. Further, when the connecting resin is an ultraviolet curable resin, if the haze value of the connecting resin exceeds 3%, the light does not sufficiently reach the inside when irradiated with light, and it takes time to cure. There will be problems such as the increase in the number of UV lamps required or the inability to increase the manufacturing speed.
このように連結樹脂を不透明にする方法としては、例えば、連結樹脂に顔料を混入することで着色する方法がある。この場合、顔料の選択によって、連結樹脂の色も選択可能である。このため、例えば、連結樹脂の色を、各光ファイバ単心線の着色層とは異なる色とすることで、着色層と連結樹脂との識別が容易である。また、連結樹脂の色を、連結部５で連結されるいずれかの光ファイバ単心線の色と同一の色とすれば、見た目で連結部５を目立たなくすることもできる。また、顔料の濃度を薄くすることで、不透明でありながら連結部の色を目立たなくすることもできる。 As a method of making the connecting resin opaque in this way, for example, there is a method of coloring by mixing a pigment in the connecting resin. In this case, the color of the connecting resin can also be selected by selecting the pigment. Therefore, for example, by making the color of the connecting resin different from the colored layer of each optical fiber single core wire, it is easy to distinguish between the colored layer and the connecting resin. Further, if the color of the connecting resin is the same as the color of any of the optical fiber single core wires connected by the connecting portion 5, the connecting portion 5 can be visually inconspicuous. Further, by reducing the concentration of the pigment, it is possible to make the color of the connecting portion inconspicuous while being opaque.
なお、連結樹脂を不透明にする方法としては、この他に、連結樹脂に微細な気泡を混入してもよい。微細な気泡を混入させることで、光が散乱されて、ヘイズ値を上昇させることができる。また、連結樹脂に、不透明の物質を混入させてもよい。例えば、微細な無機物の粉（タルク等）を混入させても、連結樹脂のヘイズ値を上昇させることができる。 In addition to this, as a method of making the connecting resin opaque, fine bubbles may be mixed in the connecting resin. By mixing fine bubbles, light is scattered and the haze value can be increased. Further, an opaque substance may be mixed with the connecting resin. For example, the haze value of the connecting resin can be increased by mixing fine inorganic powder (talc or the like).
次に、光ファイバテープ心線１の連結部５の検出方法について説明する。まず、光ファイバ単心線３ａ、３ｂ、３ｃ、３ｄが、例えばガイドロール等によって所定の間隔で並列される。この状態で、連結樹脂がコーティングダイス等によって、光ファイバ単心線の周囲の所定の位置に、連結樹脂が塗布される。 Next, a method of detecting the connecting portion 5 of the optical fiber tape core wire 1 will be described. First, the optical fiber single core wires 3a, 3b, 3c, and 3d are arranged in parallel at predetermined intervals by, for example, a guide roll or the like. In this state, the connecting resin is coated with a coating die or the like at a predetermined position around the optical fiber single core wire.
コーティングダイス等を通過した光ファイバ単心線３ａ、３ｂ、３ｃ、３ｄは、連結樹脂が紫外線硬化樹脂であれば、紫外線照射部に送られて、連結部５を硬化することができる。なお、連結部５は加熱等の他の方法によって硬化させてもよい。以上により、光ファイバテープ心線１が製造される。 If the connecting resin is an ultraviolet curable resin, the optical fiber single core wires 3a, 3b, 3c, and 3d that have passed through the coating die or the like can be sent to the ultraviolet irradiation unit to cure the connecting portion 5. The connecting portion 5 may be cured by another method such as heating. As described above, the optical fiber tape core wire 1 is manufactured.
図３は、連結部検出装置１０の概略図である。製造された光ファイバテープ心線１は、連結部検出装置１０に送られる。連結部検出装置１０は、前述した光ファイバテープ心線１の製造ラインと同一ライン上に配置される。なお、光ファイバテープ心線の製造装置と連結部検出装置を別ラインとしてもよい。 FIG. 3 is a schematic view of the connecting portion detecting device 10. The manufactured optical fiber tape core wire 1 is sent to the connecting portion detection device 10. The connecting portion detection device 10 is arranged on the same line as the production line of the above-mentioned optical fiber tape core wire 1. The optical fiber tape core wire manufacturing device and the connecting portion detection device may be separate lines.
連結部検出装置１０は、主に、ガイドロール１５、照明装置１１、検出部１３、線速測定部１７等から構成される。製造された光ファイバテープ心線１は、ガイドロール１５によって位置決めがなされた状態で、照明装置１１の上方を通過する。照明装置１１からは、例えば平行光が照射される。 The connecting unit detection device 10 is mainly composed of a guide roll 15, a lighting device 11, a detection unit 13, a linear velocity measuring unit 17, and the like. The manufactured optical fiber tape core wire 1 passes above the lighting device 11 in a state of being positioned by the guide roll 15. For example, parallel light is emitted from the lighting device 11.
照明装置１１の上方には、検出部１３が配置される。すなわち、検出部１３は、光ファイバテープ心線１を挟んで、照明装置１１と対向する位置に配置される。検出部１３は、光ファイバテープ心線１を透過した光を検出可能である。 A detection unit 13 is arranged above the lighting device 11. That is, the detection unit 13 is arranged at a position facing the lighting device 11 with the optical fiber tape core wire 1 interposed therebetween. The detection unit 13 can detect the light transmitted through the optical fiber tape core wire 1.
照明装置１１及び検出部１３を通過した光ファイバテープ心線１は、線速測定部１７と接触する。線速測定部１７は、光ファイバテープ心線１の線速を検出可能である。線速測定部１７を通過した光ファイバテープ心線１は、図示を省略した巻き取り手段等によって巻き取られる。 The optical fiber tape core wire 1 that has passed through the lighting device 11 and the detection unit 13 comes into contact with the linear velocity measuring unit 17. The linear velocity measuring unit 17 can detect the linear velocity of the optical fiber tape core wire 1. The optical fiber tape core wire 1 that has passed through the linear velocity measuring unit 17 is wound by a winding means or the like (not shown).
ここで、前述したように、光ファイバ単心線は着色層を有するため、照明装置１１からの光は着色層によって遮蔽される。また、連結部５は、完全な透明ではないため、連結部５によっても光が遮蔽される。光ファイバ単心線同士は、隙間をあけて配列されているため、光ファイバ単心線同士の隙間からは、連結部５以外の部位において光が透過する。 Here, as described above, since the optical fiber single core wire has a colored layer, the light from the illuminating device 11 is shielded by the colored layer. Further, since the connecting portion 5 is not completely transparent, the light is also shielded by the connecting portion 5. Since the optical fiber single core wires are arranged with a gap between them, light is transmitted from the gap between the optical fiber single core wires at a portion other than the connecting portion 5.
検出部１３は、光ファイバ単心線同士の間であって、連結部５以外の部位から透過する光を検出可能である。すなわち、光ファイバ単心線同士の隙間における、連結部５を検出可能である。制御部（図示せず）は、検出部１３で検出された連結部５の情報と、線速測定部１７からの線速情報に基づいて得られる位置情報と合わせて記憶部（図示せず）に記憶する。この際、制御部は、本来あるべきはずの連結部５が検出されない（透過光を検出）場合や、連結部５の長さが、所定の長さ以下であるような場合、又は、本来、連結部５が存在しない部位において連結部５が検出された（透過光が検出されない）場合等を、異常と判断することができる。 The detection unit 13 can detect light transmitted from a portion other than the connecting portion 5 between the optical fiber single core wires. That is, the connecting portion 5 in the gap between the optical fiber single core wires can be detected. The control unit (not shown) is a storage unit (not shown) together with the information of the connecting unit 5 detected by the detection unit 13 and the position information obtained based on the linear velocity information from the linear velocity measuring unit 17. Remember in. At this time, the control unit may not detect the connecting portion 5 which should be originally (detects transmitted light), or the length of the connecting portion 5 may be less than or equal to a predetermined length, or originally. When the connecting portion 5 is detected (transmitted light is not detected) in the portion where the connecting portion 5 does not exist, it can be determined that the abnormality is present.
以上説明したように、本実施形態によれば、連結部５を不透明とすることで、連結部５を光が透過することによる連結部異常の誤判断を抑制し、ライン上でも容易に連結部５の品質管理が可能である。また、着色された光ファイバ単心線を用い、光ファイバ単心線のヘイズ値を９０％以上とすることで、色の視認性が優れる。また、連結部５は不透明でありながら、ヘイズ値を光ファイバ単心線と大きく異なるようにすることで、検出部１３で検出される光量から、光ファイバ単心線と連結部５と光ファイバ単心線との隙間との識別も可能である。このため、光ファイバ単心線同士が接触している部分と連結部５とを識別可能である。 As described above, according to the present embodiment, by making the connecting portion 5 opaque, it is possible to suppress erroneous determination of the connecting portion abnormality due to the transmission of light through the connecting portion 5, and the connecting portion can be easily determined even on the line. Quality control of 5 is possible. Further, by using a colored optical fiber single core wire and setting the haze value of the optical fiber single core wire to 90% or more, the visibility of the color is excellent. Further, although the connecting portion 5 is opaque, the haze value is made to be significantly different from that of the optical fiber single core wire, so that the optical fiber single core wire, the connecting portion 5 and the optical fiber can be obtained from the amount of light detected by the detection unit 13. It is also possible to distinguish it from the gap with the single core wire. Therefore, it is possible to distinguish between the portion where the optical fiber single core wires are in contact with each other and the connecting portion 5.
実際に、光ファイバテープ心線を用いて連結部の検出等を評価した。まず、着色層を有する直径２００μｍの光ファイバ単心線１２本を並列させた。この際、光ファイバ単心線は、２５０μｍピッチで並列させた。すなわち、光ファイバ単心線同士の間には５０μｍの隙間が形成される。このように、光ファイバ単心線同士の隙間から光を十分に透過させるためには、５０μｍ以上の隙間をあけることが望ましい。 Actually, the detection of the connecting portion was evaluated using the optical fiber tape core wire. First, 12 optical fiber single core wires having a diameter of 200 μm having a colored layer were arranged in parallel. At this time, the optical fiber single core wires were arranged in parallel at a pitch of 250 μm. That is, a gap of 50 μm is formed between the optical fiber single core wires. As described above, in order to sufficiently transmit light from the gap between the optical fiber single core wires, it is desirable to leave a gap of 50 μm or more.
隣り合う光ファイバ単心線の間には、所定のピッチで連結樹脂を充填させて光ファイバ単心線同士を連結した。なお、連結部の長さは１０ｍｍ、非連結部の長さは３０ｍｍとした。また、幅方向に隣り合う連結部同士は、長手方向に千鳥状に位置をずらして配置した。塗布された連結樹脂には、紫外線を照射して硬化させた。なお、連結樹脂には、紫色の顔料を混ぜて不透明とした。この際、顔料の量を変えることで、ヘイズ値を変化させた複数種類の光ファイバテープ心線を得た。 The optical fiber single core wires were connected to each other by filling the adjacent optical fiber single core wires with a connecting resin at a predetermined pitch. The length of the connecting portion was 10 mm, and the length of the non-connecting portion was 30 mm. Further, the connecting portions adjacent to each other in the width direction were arranged so as to be staggered in the longitudinal direction. The applied connecting resin was irradiated with ultraviolet rays and cured. The connecting resin was mixed with a purple pigment to make it opaque. At this time, by changing the amount of the pigment, a plurality of types of optical fiber tape core wires having different haze values were obtained.
なお、ヘイズ値は以下の方法で測定した。まず、１０ｃｍ角のガラス基板をスピンコータに設置し、光ファイバテープ心線の作成に使った連結樹脂を、その上に広げ、５～１０μｍ厚程度になるように回転スピードをコントロールして塗布した。そのガラス基板をパージボックスに入れ、窒素雰囲気を作り、紫外線ランプを用いて、紫外線光を照度１０００ｍＷ／ｃｍ２、照射量１０００ｍＪ／ｃｍ２で照射し、シートを作成した。得られたシートを用いて、ＪＩＳ Ｋ ７１３６に従ってヘイズ値を測定した。 The haze value was measured by the following method. First, a 10 cm square glass substrate was placed on a spin coater, and the connecting resin used for making the optical fiber tape core wire was spread on the glass substrate and applied by controlling the rotation speed so as to have a thickness of about 5 to 10 μm. The glass substrate was placed in a purge box to create a nitrogen atmosphere, and an ultraviolet light was irradiated with an illuminance of 1000 mW / cm 2 and an irradiation amount of 1000 mJ / cm 2 using an ultraviolet lamp to prepare a sheet. Using the obtained sheet, the haze value was measured according to JIS K 7136.
得られた光ファイバテープ心線を、図３に示した連結部検出装置１０と同様のライン中を走行させながら、連結部の状態を検査した。検査によって、本来連結部が存在している位置において、連結部が検出されずに、連結部が分離されていると検出された位置を特定し、当該位置まで光ファイバテープ心線巻き返しして本当に分離していたかどうかを目視で確認した。 The state of the connecting portion was inspected while the obtained optical fiber tape core wire was run in the same line as the connecting portion detection device 10 shown in FIG. By inspection, at the position where the connecting part originally exists, the position where the connecting part was not detected and the connecting part was detected to be separated was identified, and the optical fiber tape core wire was rewound to that position. It was visually confirmed whether or not they were separated.
検出装置によって、連結部が分離状態と判断された位置において、実際には分離されていなかったものを誤検出とし、誤検出率を算出した。なお、光ファイバテープ心線１ｋｍごとに、１か所でも誤検出があったら誤検出あり、なければ誤検出なしとして、１００ｋｍ分の検査した時の誤検出の発生確率を誤検出率とした。 At the position where the connecting portion was determined to be in the separated state by the detection device, the one that was not actually separated was regarded as erroneous detection, and the erroneous detection rate was calculated. For every 1 km of the optical fiber tape core wire, if there was an erroneous detection even at one place, there was an erroneous detection, otherwise there was no erroneous detection, and the probability of erroneous detection when inspecting for 100 km was taken as the erroneous detection rate.
また、得られた光ファイバテープ心線を目視で確認し、連結部に対するくすみの有無を判定した。判断は１０人で行い、最も透明度の高いもの（後述する比較例１）を基準とし、これと比較して一人でもくすみが強いと判断したものを×とし、全員がくすみは強くないと感じられたものを○とした。結果を表１に示す。 In addition, the obtained optical fiber tape core wire was visually confirmed to determine the presence or absence of dullness in the connecting portion. Judgment was made by 10 people, and the one with the highest transparency (Comparative Example 1 described later) was used as the standard, and the one judged to be dull even by one person was marked as x, and all felt that the dullness was not strong. The one that was marked as ○. The results are shown in Table 1.
連結樹脂が適度に不透明であり、ヘイズ値が１．５％以上３％以下である実施例１から実施例４は、誤検出率が１０％以下と低かった。特に、ヘイズ値が２％を超えると、誤検出率は１％以下となった。また、実施例１～実施例４は、くすみが確認されず、光ファイバ単心線の着色層の色も目視で容易に確認することができた。 In Examples 1 to 4 in which the connecting resin was moderately opaque and the haze value was 1.5% or more and 3% or less, the false positive rate was as low as 10% or less. In particular, when the haze value exceeded 2%, the false positive rate became 1% or less. Further, in Examples 1 to 4, no dullness was confirmed, and the color of the colored layer of the optical fiber single core wire could be easily confirmed visually.
これに対し、ヘイズ値が小さい（透明な）比較例１は、誤検出率が高く精度よく連結部の評価をすることができなかった。また、ヘイズ値が３％を超える比較例２は、誤検出率は低いものの、くすみが強く、光ファイバ単心線の着色層の色の判断も困難となった。 On the other hand, in Comparative Example 1 having a small haze value (transparent), the false positive rate was high and the connected portion could not be evaluated accurately. Further, in Comparative Example 2 in which the haze value exceeds 3%, although the false detection rate is low, the dullness is strong and it is difficult to judge the color of the colored layer of the optical fiber single core wire.
以上、添付図を参照しながら、本発明の実施の形態を説明したが、本発明の技術的範囲は、前述した実施の形態に左右されない。当業者であれば、特許請求の範囲に記載された技術的思想の範疇内において各種の変更例または修正例に想到し得ることは明らかであり、それらについても当然に本発明の技術的範囲に属するものと了解される。 Although the embodiments of the present invention have been described above with reference to the attached drawings, the technical scope of the present invention does not depend on the above-described embodiments. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the technical ideas described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.
１………光ファイバテープ心線
３ａ、３ｂ、３ｃ、３ｄ………光ファイバ単心線
５………連結部
１０………連結部検出装置
１１………照明装置
１３………検出部
１５………ガイドロール
１７………線速測定部
1 ………… Optical fiber tape core wire 3a, 3b, 3c, 3d ………… Optical fiber single core wire 5 ………… Connection part 10 ………… Connection part detection device 11 ………… Lighting device 13 ………… Detection unit 15 ………… Guide roll 17 ………… Linear speed measuring unit
Claims (4)
隣り合う前記光ファイバ単心線同士の連結部が、前記光ファイバ単心線の長手方向に対して間欠的に配置されており、
前記連結樹脂が、不透明であり、
前記連結樹脂の、ＪＩＳ Ｋ ７１３６で規定されるヘイズ値が１．５％以上３％以下であり、
前記光ファイバ単心線は着色され、ヘイズ値が９０％以上であることを特徴とする光ファイバテープ心線。 A plurality of optical fiber single core wires are arranged in parallel, and the adjacent optical fiber single core wires are optical fiber tape core wires connected by a connecting resin.
The connecting portion between the adjacent optical fiber single core wires is intermittently arranged with respect to the longitudinal direction of the optical fiber single core wire.
The connecting resin is opaque and
The haze value of the connecting resin specified by JIS K 7136 is 1.5% or more and 3% or less.
The optical fiber tape core wire is characterized in that the optical fiber single core wire is colored and has a haze value of 90% or more .
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