JP2003043319A - Coated optical fiber and coated optical fiber tape - Google Patents
Coated optical fiber and coated optical fiber tapeInfo
- Publication number
- JP2003043319A JP2003043319A JP2001236475A JP2001236475A JP2003043319A JP 2003043319 A JP2003043319 A JP 2003043319A JP 2001236475 A JP2001236475 A JP 2001236475A JP 2001236475 A JP2001236475 A JP 2001236475A JP 2003043319 A JP2003043319 A JP 2003043319A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- coating layer
- primary coating
- outer periphery
- core wire
- 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.)
- Pending
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 67
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims description 50
- 238000000576 coating method Methods 0.000 claims description 50
- 239000011247 coating layer Substances 0.000 claims description 40
- 239000000463 material Substances 0.000 claims description 19
- 239000010410 layer Substances 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 6
- 239000010453 quartz Substances 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 8
- 239000011521 glass Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007526 fusion splicing Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Light Guides In General And Applications Therefor (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は光ファイバ素線の外
周に設けられた外被除去性の良好な光ファイバ心線およ
び光ファイバテープ心線に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber core wire and an optical fiber tape core wire which are provided on the outer periphery of an optical fiber element wire and have a good outer coat removing property.
【０００２】[0002]
【従来の技術】近年、大容量データ伝送の需要の増大、
特にインターネットに代表される個人の通信回線利用量
の飛躍的な増大等により、FTTH(Fiber to the home)化
の需要が急激に増大しており、光ケーブルネットワーク
の敷設が急がれている。これらの光ケーブルとして複数
本の光ファイバ心線をテープ状に一体化した光ファイバ
テープ心線を複数本、スロット内に積層した状態で収納
した構造の光ファイバケーブルが用いられている。2. Description of the Related Art In recent years, the demand for large-capacity data transmission has increased,
In particular, demand for FTTH (Fiber to the home) is rapidly increasing due to a dramatic increase in the amount of communication lines used by individuals such as the Internet, and the laying of optical cable networks is urgently needed. As these optical cables, an optical fiber cable having a structure in which a plurality of optical fiber ribbons obtained by integrating a plurality of optical fiber ribbons in a tape shape are housed in a state of being stacked in a slot is used.
【０００３】図1はこのような光ファイバケーブルに用
いられる光ファイバ心線1の断面図である。光ファイバ
心線1は光ファイバ裸線2の外周表面に紫外線硬化型樹脂
からなる一次被覆層3を形成し、さらにその外周に紫外
線硬化型樹脂からなる二次被覆層4を形成し、さらにそ
の外周表面に着色紫外線硬化型樹脂からなる着色層5を
形成してなるものである。図2は図1に示した光ファイバ
心線1を複数本並べ紫外線硬化型樹脂からなる一括被覆
層6にてテープ状に一体化した光ファイバテープ心線7の
断面図である。このテープ心線同士を接続する場合、ま
ずテープ心線から一括被覆層6とファイバ被覆層3,4,お
よび着色層5を加熱型被覆除去装置で一括して除去す
る。その後ファイバカッターにてガラスファイバを切断
する。次にガラスファイバ同士をつき合わせて融着接続
する。融着接続時にガラスファイバはV溝上で整列させ
ているがガラス表面にファイバ被覆残留物(被覆カス)が
あるとファイバ端面が合わず接続不良が生じる。そのた
めテープ心線同士の接続作業が容易に行えるようにする
には被覆除去後の被覆カスをできるだけ少なくする必要
がある。従って光ファイバ裸線と剥離しやすい密着の低
い一次被覆材を使用することが望ましい。FIG. 1 is a sectional view of an optical fiber core wire 1 used in such an optical fiber cable. The optical fiber core wire 1 forms a primary coating layer 3 made of an ultraviolet curable resin on the outer peripheral surface of the bare optical fiber 2, and further forms a secondary coating layer 4 made of an ultraviolet curable resin on the outer periphery thereof, and further A colored layer 5 made of a colored ultraviolet curable resin is formed on the outer peripheral surface. FIG. 2 is a cross-sectional view of an optical fiber ribbon 7 which is obtained by arranging a plurality of the optical fibers 1 shown in FIG. 1 and integrating them in a tape form with a collective coating layer 6 made of an ultraviolet curable resin. When connecting the tape cores to each other, first, the collective coating layer 6, the fiber coating layers 3 and 4, and the coloring layer 5 are collectively removed from the tape cores by a heating type coating removing device. After that, the glass fiber is cut with a fiber cutter. Next, the glass fibers are butted to each other and fusion-bonded. At the time of fusion splicing, the glass fibers are aligned on the V-groove, but if there is a fiber coating residue (coating residue) on the glass surface, the fiber end faces do not match and a splice failure occurs. Therefore, in order to facilitate the work of connecting the tape cores to each other, it is necessary to reduce the coating residue after removing the coating as much as possible. Therefore, it is desirable to use a primary coating material which has a low adhesion and is easily peeled off from the bare optical fiber.
【０００４】ところで従来の光ケーブルは、電話局間を
接続するいわゆる幹線系で主として使用されてきたが、
FTTH化は電話局から末端の個人宅まで光ファイバケーブ
ルが敷設されることを意味する。従って敷設後のケーブ
ルが従来にはない様々な環境に曝される機会が大幅に増
加する。当然上記の光ケーブルのシースが損傷してケー
ブル内に水が浸入し、光ファイバが長時間浸水した状態
に置かれる場合も十分考えられる。光ファイバは、浸水
によってロス増することが少なからず報告されている。
光ファイバ心線が長期間浸水された場合、浸水により例
えば光ファイバ裸線／一次被覆層界面の密着力が低下し
部分的な剥離が生じ、水が溜まりブリスタを発生する。
光ファイバ裸線／一次被覆界面のブリスタが発生すると
光ファイバ裸線には側圧が加わりマイクロベンドロスが
増大する。従って耐水性を改善する為には光ファイバ裸
線と被覆界面の密着力を上げて界面に水が侵入するのを
防止する必要がある。By the way, the conventional optical cable has been mainly used in a so-called trunk line system for connecting telephone stations.
The shift to FTTH means that optical fiber cables will be laid from the telephone office to the private home at the end. Therefore, the chances that the cable after laying will be exposed to various unprecedented environments will greatly increase. Naturally, it is sufficiently conceivable that the above-mentioned optical cable sheath may be damaged and water may enter the cable, and the optical fiber may be left in a state of being immersed for a long time. It has been reported that an optical fiber causes a loss increase due to flooding.
When the optical fiber core is flooded for a long period of time, the flooding lowers the adhesive force at the interface of the bare optical fiber / primary coating layer, for example, resulting in partial peeling and water accumulation to form blisters.
When a blister at the interface between the bare optical fiber and the primary coating is generated, lateral pressure is applied to the bare optical fiber to increase microbend loss. Therefore, in order to improve the water resistance, it is necessary to increase the adhesion between the bare optical fiber and the coating interface to prevent water from entering the interface.
【０００５】[0005]
【発明が解決しようとしている課題】従って耐水性と被
覆除去性を両立させるには光ファイバ裸線と一次被覆層
の密着力を適正な範囲に納める必要がある。一方、被覆
除去後のカス残り改善については特開2000-111767公
報、特開2000-155248公報、特開2000-56191公報などに
開示されている。しかしこれらには光ファイバ裸線と一
次被覆層との密着力をあるレベル以下にすることにより
一括被覆除去後の被覆カスを抑制できることが示されて
いるものの、このガラス密着力は常温時の値であり、実
際の被覆除去作業ではファイバは加熱されており常温に
比べてガラス密着力は著しく低下している。この密着力
低減の程度は一次被覆材のモノマー種やシランカップリ
ング材種などにより著しく異なっており、実際のテープ
被覆除去時のファイバ/一次被覆材界面密着力を反映し
ていないことが多く、外被の一括被覆除去後の被覆カス
を減らすことは困難であった。Therefore, in order to achieve both water resistance and coating removability, it is necessary to keep the adhesion between the bare optical fiber and the primary coating layer within an appropriate range. On the other hand, the improvement of residue after removing the coating is disclosed in JP 2000-111767 A, JP 2000-155248 A, JP 2000-56191 A, and the like. However, although it is shown that the adhesion of the bare optical fiber and the primary coating layer can be suppressed to a certain level or less, the coating residue after the collective coating removal can be suppressed, the glass adhesion is the value at room temperature. In the actual coating removing work, the fiber is heated, and the glass adhesion force is significantly lower than that at room temperature. The degree of this adhesion reduction is significantly different depending on the monomer type of the primary coating material, the silane coupling material type, etc., and often does not reflect the actual fiber / primary coating material interface adhesive force during tape coating removal, It was difficult to reduce the coating residue after removing the collective coating of the outer cover.
【０００６】[0006]
【問題を解決するための手段】上記課題を解決するた
め、本発明は、（１）光ファイバ裸線の外周に一次被覆
層が設けられ、前記一次被覆層の外周に二次被覆層が設
けられてなる光ファイバ素線の外周に外被が設けられた
光ファイバ心線において、前記外被除去時の温度で、前
記一次被覆層のＪＩＳ Ｂ０６０１で規定する算術平均
粗さＲａ＝0.7μｍの石英ガラス基板への密着力に対す
る、前記一次被覆層の破断強度の比が０．４４以上であ
ることを特徴とする光ファイバ心線、（２）前記二次被
覆材の外周に着色層を介して前記外被が設けられている
ことを特徴とする（１）記載の光ファイバ心線、（３）
光ファイバ裸線の外周に一次被覆層が設けられ、前記一
次被覆層の外周に二次被覆層が設けられてなる光ファイ
バ素線を複数本並列に配置し、前記光ファイバ素線を共
通の樹脂で一括被覆された外被が設けられた光ファイバ
テープ心線において、前記外被除去時の温度で、前記一
次被覆層のＪＩＳ Ｂ０６０１で規定する算術平均粗さ
Ｒａ＝0.7μｍの石英ガラス基板への密着力に対する前
記一次被覆層の破断強度の比が０．４４以上であること
を特徴とする光ファイバテープ心線、を提供するもので
ある。In order to solve the above problems, the present invention provides (1) a primary coating layer is provided on the outer periphery of a bare optical fiber, and a secondary coating layer is provided on the outer periphery of the primary coating layer. In an optical fiber core wire provided with an outer jacket on the outer periphery of an optical fiber element wire formed as described above, at the temperature when the outer jacket is removed, the arithmetic mean roughness Ra of the primary coating layer Ra = 0.7 μm specified in JIS B0601 A ratio of the breaking strength of the primary coating layer to the adhesion to the quartz glass substrate is 0.44 or more, (2) the colored layer is provided on the outer periphery of the secondary coating material. (3) The optical fiber core wire according to (1), characterized in that the outer cover is provided.
A primary coating layer is provided on the outer periphery of the bare optical fiber, and a plurality of optical fiber strands each having a secondary coating layer on the outer periphery of the primary coating layer are arranged in parallel, and the optical fiber strands are common. In an optical fiber tape core wire provided with an outer cover collectively covered with a resin, at the temperature when the outer cover is removed, a quartz glass substrate having an arithmetic mean roughness Ra = 0.7 μm of the primary coating layer specified in JIS B0601. An optical fiber tape core wire, wherein the ratio of the breaking strength of the primary coating layer to the adhesion to the optical fiber tape is 0.44 or more.
【０００７】[0007]
【発明の実施の形態】次に本発明の効果を実施例を参照
しながら説明する。本発明においては、一括被覆された
外被を除去する作業は図3のように、従来公知の加熱型
被覆除去装置(ホットストリッパー)8を用いて行われ
る。ホットストリッパー8に光ファイバテープ心線を所
定長セットする。その際にホットストリッパーの上下の
刃9でテープに切り込みを入れる。その後ヒーター部10
により一定期間加熱しファイバ密着力が低下した後にテ
ープ他端を引っ張り外被を除去する。この際ファイバ/
一次被覆界面密着力が一次被覆層の破断強度に比べ著し
く高いとファイバ/一次被覆界面で剥離する前に一次被
覆層が破壊され被覆カス11が発生する。一般的にテープ
心線の一括被覆除去作業はファイバ/一次被覆層界面の
密着力を下げるため例えば70〜100℃程度に加熱して行
われる。そこで本発明者らはテープ被覆除去作業時の加
熱温度における一次被覆材のガラスに対する密着力と一
次被覆材の破断強度を測定した。BEST MODE FOR CARRYING OUT THE INVENTION Next, the effects of the present invention will be described with reference to Examples. In the present invention, as shown in FIG. 3, the work of removing the collectively coated jacket is performed by using a conventionally known heating type coating remover (hot stripper) 8. An optical fiber ribbon is set on the hot stripper 8 for a predetermined length. At that time, cut the tape with the upper and lower blades 9 of the hot stripper. Then the heater part 10
After heating for a certain period of time to reduce the fiber adhesion, the other end of the tape is pulled to remove the jacket. Fiber /
If the adhesion strength of the primary coating interface is significantly higher than the breaking strength of the primary coating layer, the primary coating layer is broken before the fiber / primary coating interface is peeled off, and a coating residue 11 is generated. Generally, the work of removing the collective coating of the tape core wire is carried out by heating it to, for example, about 70 to 100 ° C. in order to reduce the adhesive force at the interface between the fiber and the primary coating layer. Therefore, the present inventors measured the adhesion of the primary coating material to glass and the breaking strength of the primary coating material at the heating temperature during the tape coating removal operation.
【０００８】一次被覆層及び二次被覆層用の紫外線硬化
型樹脂としてウレタンアクリレート系紫外線硬化型オリ
ゴマーとモノマーの配合量及び種類を調整して表２のよ
うな材料を準備した。一次被覆材のガラス密着力は90゜
ピール試験にて評価した。ＪＩＳ Ｂ０６０１で規定す
る算術平均粗さＲａ＝0.7μｍの石英ガラス基板上に、
硬化後の一次被覆層の厚さが200μｍとなるよう塗布
後、100mJ/cm2の紫外線を照射して硬化させた。このシ
ートを1cm幅で切り出し、50mm/minで90゜の方向に引っ
張って剥がした際の粘着力を測定した。またこれらの測
定を80℃に加熱した恒温槽中で行った。一次被覆材の破
断強度を測定するため、一次被覆材をＪＩＳ Ｂ０６０
１で規定する算術平均粗さＲａ＝0.7μｍの石英ガラス
基板上に、硬化後の厚さが200μｍとなるよう塗布後、1
000mJ/cm2の紫外線を照射してシートを作成した。この
シートから幅6mmの短冊片を切り出し標線間距離25mm、
引張速度50mm/minで80℃の恒温槽内で引張り破断時の最
大値を測定した。Materials as shown in Table 2 were prepared by adjusting the compounding amounts and types of urethane acrylate UV curable oligomers and monomers as UV curable resins for the primary coating layer and the secondary coating layer. The glass adhesion of the primary coating material was evaluated by a 90 ° peel test. On a quartz glass substrate with an arithmetic mean roughness Ra = 0.7 μm specified in JIS B0601,
After coating so that the thickness of the cured primary coating layer would be 200 μm, it was cured by irradiation with ultraviolet rays of 100 mJ / cm 2 . This sheet was cut out with a width of 1 cm, and the adhesive force when peeled off by pulling in a direction of 90 ° at 50 mm / min was measured. Further, these measurements were carried out in a thermostat heated to 80 ° C. In order to measure the breaking strength of the primary coating material, the primary coating material is JIS B060.
1 is applied to a quartz glass substrate having an arithmetic mean roughness Ra = 0.7 μm specified in 1 so that the thickness after curing is 200 μm.
A sheet was prepared by irradiating with ultraviolet rays of 000 mJ / cm 2 . A strip of 6 mm wide is cut out from this sheet and the distance between the marked lines is 25 mm,
The maximum value at the time of tensile rupture was measured in a thermostat at 80 ° C at a tensile speed of 50 mm / min.
【０００９】次に光ファイバ心線の被覆除去性を評価す
るため表1に示した一次被覆材と二次被覆材で光ファイ
バ心線を作成後、着色を施し外被を一括被覆して8芯光
ファイバテープ心線を作成した。これらの光ファイバテ
ープ心線をホットストリッパー(商品名：古河電気工業
社製S218C)にて外被を一括被覆除去した。ホットストリ
ッパーによる心線の加熱はテープ被覆層越しになるので
テープ被覆除去前にホットストリッパー加熱部にテープ
心線から着色心線を除去して作製したテープ被覆層片を
載せた状態で接触式温度計を押しあて5秒加熱後の温度
が80℃になるようにホットストリッパーを調節した。そ
の後、加熱時間5秒、引張速度100mm/min、被覆除去長30
mmで各8芯光ファイバテープ心線を一括被覆除去しガラ
ス部分に残留した被覆カスのレベルを調べた。カス残り
のレベルの数値化は以下の手順で行った。一括被覆除去
後のテープ心線をマイクロスコープで観察し大きさが10
〜100μｍ及び100μｍ以上のカスに分けて数えそれぞれ
の個数から表１に従い1〜7のランクに分け、これを被覆
材料毎に各5本の光ファイバテープ心線について行い平
均値を求めた。Next, in order to evaluate the coating removability of the optical fiber core wire, an optical fiber core wire was prepared from the primary coating material and the secondary coating material shown in Table 1 and then colored to collectively coat the outer cover 8 A core optical fiber tape core wire was created. These optical fiber tape core wires were collectively covered and removed with a hot stripper (trade name: S218C manufactured by Furukawa Electric Co., Ltd.). Since the core wire is heated by the hot stripper through the tape coating layer, the tape coating layer piece made by removing the colored core wire from the tape core wire is placed on the heating part of the hot stripper before removing the tape coating. The hot stripper was adjusted so that the temperature after pressing the meter for 5 seconds and heating was 80 ° C. After that, heating time 5 seconds, tensile speed 100 mm / min, coating removal length 30
The 8-core optical fiber tape core wire was collectively removed in mm, and the level of the coating residue remaining on the glass portion was examined. The digitization of the level of residual dust was performed by the following procedure. After removing the collective coating, the tape core wire is observed with a microscope and the size is 10
.About.100 .mu.m and 100 .mu.m or more were counted separately, and each number was divided into ranks 1 to 7 according to Table 1, and this was performed for each of the five optical fiber ribbons for each coating material to obtain an average value.
【００１０】[0010]
【表１】 [Table 1]
【００１１】表２にこれらの実施例1〜2、比較例1〜3の
評価結果を示す。表２からわかるように、一次被覆層が
外被除去時の温度でのガラスへの密着力に対する外被除
去時の温度における一次被覆材の破断強度の比が０．４
４以上であれば被覆除去後の被覆カスを抑制でき、その
場合に耐水性と被覆除去性の良好な光ファイバテープ心
線を得ることができる。Table 2 shows the evaluation results of Examples 1 and 2 and Comparative Examples 1 to 3. As can be seen from Table 2, the ratio of the breaking strength of the primary coating material at the temperature when the outer coating is removed to the adhesion to the glass at the temperature when the outer coating is removed is 0.4.
If it is 4 or more, the coating dust after the coating removal can be suppressed, and in this case, the optical fiber tape core wire having excellent water resistance and coating removal property can be obtained.
【００１２】[0012]
【表２】 [Table 2]
【００１３】[0013]
【発明の効果】本発明によれば、光ファイバ裸線の外周
に一次被覆材層が設けられ、該一次被覆材層上に二次被
覆材層が設けられてなる光ファイバ素線に被覆層が設け
られた光ファイバ心線において、被覆除去性に優れた光
ファイバ心線が得られる。According to the present invention, a coating layer is provided on an optical fiber bare wire in which a primary coating material layer is provided on the outer periphery of a bare optical fiber, and a secondary coating material layer is provided on the primary coating material layer. In the optical fiber core wire provided with, it is possible to obtain an optical fiber core wire having an excellent coating removability.
【００１４】[0014]
【図1】光ファイバ心線の断面構造を示す模式図であ
る。FIG. 1 is a schematic diagram showing a cross-sectional structure of an optical fiber core wire.
【図２】光ファイバテープ心線の断面構造を示す模式図
である。FIG. 2 is a schematic diagram showing a cross-sectional structure of an optical fiber ribbon.
【図３】光ファイバテープ心線の外被を一括除去する方
法の模式図である。FIG. 3 is a schematic view of a method for collectively removing the jackets of the optical fiber ribbons.
１ 光ファイバ心線 ２ 光ファイバ裸線 ３ 一次被覆層 ４ 二次被覆層 ５ 着色層 ６ 外被（一括被覆層） ７ 光ファイバテープ心線 ８ ホットストリッパー ９ ホットストリッパーの刃 １０ ホットストリッパーのヒーター部 １１ 被覆カス 1 Optical fiber core 2 bare optical fiber 3 Primary coating layer 4 Secondary coating layer 5 colored layers 6 Coat (collective coating layer) 7 Optical fiber tape 8 hot strippers 9 Hot stripper blades 10 Hot stripper heater 11 coated waste
Claims (3)
られ、前記一次被覆層の外周に二次被覆層が設けられて
なる光ファイバ素線の外周に外被が設けられた光ファイ
バ心線において、前記外被除去時の温度で、前記一次被
覆層はＪＩＳ Ｂ０６０１で規定する算術平均粗さＲａ
＝0.7μｍの石英ガラス基板への密着力に対する、前記
一次被覆層の破断強度の比が０．４４以上であることを
特徴とする光ファイバ心線。1. An optical fiber in which a primary coating layer is provided on the outer periphery of a bare optical fiber, and a secondary coating layer is provided on the outer periphery of the primary coating layer, and an outer sheath is provided on the outer periphery of the optical fiber element wire. In the core wire, at the temperature at the time of removing the jacket, the primary coating layer has an arithmetic average roughness Ra defined by JIS B0601.
= 0.7 μm, the ratio of the breaking strength of the primary coating layer to the adhesion to a quartz glass substrate is 0.44 or more.
記外被が設けられていることを特徴とする請求項１記載
の光ファイバ心線。2. The optical fiber core wire according to claim 1, wherein the outer cover is provided on the outer periphery of the secondary coating material with a colored layer interposed therebetween.
られ、前記一次被覆層の外周に二次被覆層が設けられて
なる光ファイバ素線を複数本並列に配置し、前記光ファ
イバ素線を共通の樹脂で一括被覆された外被が設けられ
た光ファイバテープ心線において、前記外被除去時の温
度で、前記一次被覆層のＪＩＳ Ｂ０６０１で規定する
算術平均粗さＲａ＝0.7μｍの石英ガラス基板への密着
力に対する前記一次被覆層の破断強度の比が０．４４以
上であることを特徴とする光ファイバテープ心線。3. A plurality of optical fiber element wires, each of which has a primary coating layer provided on the outer periphery of a bare optical fiber and a secondary coating layer provided on the outer periphery of the primary coating layer, are arranged in parallel, and the optical fiber is provided. In an optical fiber tape core wire provided with an outer cover in which element wires are collectively covered with a common resin, at the temperature at which the outer cover is removed, the arithmetic mean roughness Ra = 0.7 specified in JIS B0601 of the primary coating layer. The optical fiber ribbon, wherein the ratio of the breaking strength of the primary coating layer to the adhesion to the quartz glass substrate of μm is 0.44 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001236475A JP2003043319A (en) | 2001-08-03 | 2001-08-03 | Coated optical fiber and coated optical fiber tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001236475A JP2003043319A (en) | 2001-08-03 | 2001-08-03 | Coated optical fiber and coated optical fiber tape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003043319A true JP2003043319A (en) | 2003-02-13 |
Family
ID=19067736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001236475A Pending JP2003043319A (en) | 2001-08-03 | 2001-08-03 | Coated optical fiber and coated optical fiber tape |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003043319A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007232993A (en) * | 2006-02-28 | 2007-09-13 | Fujikura Ltd | Method of removing coating residue of optical fiber ribbon |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11248980A (en) * | 1997-12-22 | 1999-09-17 | Dsm Nv | Radiation curing oligomer, radiation curing composition, coated optical glass fiber and ribbon assembly |
| JP2000056191A (en) * | 1998-08-10 | 2000-02-25 | Sumitomo Electric Ind Ltd | Coated optical fiber |
| JP2000155248A (en) * | 1998-11-20 | 2000-06-06 | Sumitomo Electric Ind Ltd | Coated optical fiber ribbon and method for removing its coating |
-
2001
- 2001-08-03 JP JP2001236475A patent/JP2003043319A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11248980A (en) * | 1997-12-22 | 1999-09-17 | Dsm Nv | Radiation curing oligomer, radiation curing composition, coated optical glass fiber and ribbon assembly |
| JP2000056191A (en) * | 1998-08-10 | 2000-02-25 | Sumitomo Electric Ind Ltd | Coated optical fiber |
| JP2000155248A (en) * | 1998-11-20 | 2000-06-06 | Sumitomo Electric Ind Ltd | Coated optical fiber ribbon and method for removing its coating |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007232993A (en) * | 2006-02-28 | 2007-09-13 | Fujikura Ltd | Method of removing coating residue of optical fiber ribbon |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0829028B1 (en) | Fiber optic ribbon cable and method for its manufacture | |
| JPH11326718A (en) | Optical fiber multiribbon and its formation | |
| US6810188B1 (en) | Coated optical fiber | |
| JP2006505006A (en) | Peelable buffer layer having a preferential tearing portion and method for manufacturing the same | |
| CA3150300C (en) | Intermittently connected optical fiber ribbon and method for manufacturing intermittently connected optical fiber ribbon | |
| JP3902201B2 (en) | Optical fiber and optical fiber ribbon | |
| US6134364A (en) | Optical fiber ribbon | |
| JP2003043319A (en) | Coated optical fiber and coated optical fiber tape | |
| WO2022085595A1 (en) | Optical fiber ribbon | |
| US20220252809A1 (en) | Optical fiber tape core wire, optical fiber cable, and method of manufacturing optical fiber tape core wire | |
| JP2000155248A (en) | Coated optical fiber ribbon and method for removing its coating | |
| JP4249202B2 (en) | Optical fiber tape and optical cable | |
| JP2006208940A (en) | Optical fiber ribbon and optical cable | |
| JP2008176120A (en) | Optical fiber ribbon and optical cable | |
| JP2001083381A (en) | Coated optical fiber | |
| JP2005222080A (en) | Optical fiber ribbon and manufacturing method thereof | |
| JP2007072195A (en) | Optical fiber ribbon, optical cable, and method for separating single fibers of optical fiber ribbon | |
| JPH06313827A (en) | Optical fiber tape fiber | |
| JP4712244B2 (en) | Optical fiber ribbon | |
| WO2022085598A1 (en) | Optical fiber ribbon | |
| US20230393350A1 (en) | Optical fiber ribbon and method for manufacturing optical fiber ribbon | |
| JP2006301531A (en) | Optical fiber tape, optical cable and method for separating single core of optical fiber tape | |
| JPH11202174A (en) | Coated optical fiber tapes | |
| JP4144613B2 (en) | Optical fiber core, optical fiber tape unit and optical fiber cable using the same | |
| JPH10115737A (en) | Single core coated optical fiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20080701 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20091005 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20091009 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20091208 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20100108 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20100507 |