JPH0547807B2 - - Google Patents
Info
- Publication number
- JPH0547807B2 JPH0547807B2 JP63191387A JP19138788A JPH0547807B2 JP H0547807 B2 JPH0547807 B2 JP H0547807B2 JP 63191387 A JP63191387 A JP 63191387A JP 19138788 A JP19138788 A JP 19138788A JP H0547807 B2 JPH0547807 B2 JP H0547807B2
- Authority
- JP
- Japan
- Prior art keywords
- coat
- parallel
- primary
- die
- optical fiber
- 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
- 239000011248 coating agent Substances 0.000 claims description 24
- 238000000576 coating method Methods 0.000 claims description 24
- 239000013307 optical fiber Substances 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 239000011347 resin Substances 0.000 description 15
- 229920005989 resin Polymers 0.000 description 15
- 239000010410 layer Substances 0.000 description 5
- 239000011247 coating layer Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は、光フアイバー心線の並列状態が良
く、端末処理作業の容易なテープ型光フアイバー
心線を製造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a tape-type optical fiber coated wire in which the parallel state of the optical fiber coated wires is good and the terminal processing operation is easy.
[従来技術]
テープ型光フアイバー心線の一般的な製造方法
は、繰出される複数本の光フアイバー心線を幅寄
せし並列に引揃えて、これに紫外線硬化型樹脂
(以下、UV樹脂と言う)を塗布し、引続き前記
塗布したUV樹脂コート層に紫外線を照射してこ
れを硬化させ、テープ型光フアイバー心線を得る
ものである。[Prior art] The general method for manufacturing tape-type optical fibers is to align a plurality of unwound optical fibers in width and align them in parallel, and then apply ultraviolet curable resin (hereinafter referred to as UV resin). Then, the applied UV resin coating layer is irradiated with ultraviolet rays to cure it, thereby obtaining a tape-type optical fiber core.
上記従来のテープ型光フアイバー心線の製造方
法において、UV樹脂コート内部の各心線の並列
状態を良くするために、繰出され幅寄せされる
各心線の張力をコントロールする、あるいは心
線の幅寄せ用ローラの形状や配置を工夫する、等
の方法が試みられているが、現在の並列不良の対
策としては充分満足できるものではない。 In the above-mentioned conventional method for manufacturing tape-type optical fiber cores, in order to improve the parallel state of each core wire inside the UV resin coat, the tension of each core wire that is fed out and brought together in width is controlled, or the tension of each core wire is controlled. Attempts have been made to improve the shape and arrangement of the width-adjusting rollers, but these methods are not fully satisfactory as countermeasures against current parallelism defects.
また前記のUV樹脂コートは心線の保護のため
にある程度の厚みを必要とし、しかもそれが硬化
しているために、端末処理作業の際の各心線毎の
引裂きが容易ではない。 Further, the UV resin coat described above requires a certain degree of thickness to protect the core wires, and since it is hardened, it is not easy to tear each core wire during terminal processing.
[発明が解決しようとする課題]
上記実状に鑑み、本発明は、テープ型光フアイ
バー心線の製造において、心線の並列状態が良
く、且つ、端末処理作業の際の各心線の引裂きも
容易に行なえるテープ型光フアイバー心線を得る
ための製造方法を提供しようとするものである。[Problems to be Solved by the Invention] In view of the above-mentioned circumstances, the present invention aims to improve the parallel state of the fibers in the production of tape-type optical fiber cores and to prevent tearing of each core wire during terminal processing work. The present invention aims to provide a manufacturing method for obtaining a tape-type optical fiber core wire that can be easily performed.
[課題を解決するための手段]
本発明は、上記課題解決のために、繰出された
光フアイバー心線を並列に引揃えて、波形面の対
向によつて各心線の通路を並設し各通路間を狭く
したダイを備える一次コート槽を通過させ、各心
線の表面に前記ダイ形状に応じた並列状態にして
一次コートを塗布し、このコートをゲル分率40〜
60%に半硬化させる工程と、該工程に引続き二次
コートを塗布しこれを十分硬化させる工程とによ
り製造する。[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention arranges the unwound optical fiber cores in parallel and arranges the passages of each core in parallel by opposing corrugated surfaces. Pass through a primary coating tank equipped with a die with narrow spaces between each passage, apply a primary coat to the surface of each core wire in a parallel state according to the shape of the die, and apply this coat with a gel fraction of 40~
It is manufactured by a step of semi-curing to 60%, followed by a step of applying a second coat and fully curing it.
[作用]
上記の如く構成する本発明の方法は、並列に引
揃えた光フアイバー心線を一次コート槽を通過さ
せ、波形面の対向によるダ形状に応じた形で各心
線に一次コートを施し、このコートをゲル分率40
〜60%に半硬化させるので、各心線に矯正可能な
状態で並列する。すなわち一次コートした状態で
は、各心線間の連接部分がくびれ形状をなし、し
かもこのコートが半硬化状態であるため、並列状
態の矯正が容易に可能になる。そしてこれに引続
いて二次コートを施してこのコートを十分硬化さ
せるので、仮に一次コートされた後の心線の並列
状態が悪い場合には、二次コートの際にダイを通
過することによつて並列状態が矯正され、これに
より心線の並列状態の良好なテープ型光フアイバ
ー心線が得られる。特に、一次コート層が、上記
したようにゲル分率40〜60%の半硬化状態であれ
ば、前記のように並列状態の矯正が可能であつ
て、しかも二次コート層の硬化の際に生じる硬化
歪みが生じることがない。[Operation] In the method of the present invention configured as described above, optical fiber core wires arranged in parallel are passed through a primary coating tank, and each core wire is coated with a primary coat in a shape corresponding to the shape of the core due to opposing corrugated surfaces. Apply this coat to a gel fraction of 40
Since it is semi-hardened to ~60%, it is placed in parallel with each core wire so that it can be straightened. That is, in the primary coated state, the connecting portion between each core wire has a constricted shape, and since this coat is in a semi-hardened state, the parallel state can be easily corrected. Subsequently, a second coat is applied and this coat is sufficiently cured, so if the core wires are in poor alignment after the first coat, they will pass through the die during the second coat. As a result, the parallel state is corrected, and thereby a tape-type optical fiber core wire with good parallel state of the core wires can be obtained. In particular, if the primary coat layer is in a semi-cured state with a gel fraction of 40 to 60% as described above, it is possible to correct the parallel state as described above, and moreover, when the secondary coat layer is cured, No hardening distortion occurs.
また、コートを一次と二次に分け、一次コート
を半硬化にし、二次コートを十分硬化させるの
で、通常の保護は十分であつて、しかも端末処理
作業等の際の心線の引裂きが、全コート層を一度
に十分硬化させたものに比し容易に行なえること
になる。特に上記のように一次コートのダイとし
て、波形面の対向によつて各心線の通路間を狭く
したものを用いたことにより、一次コートが、並
列した各心線間の連接部分でくびれ形状をなし、
これが一次コートの半硬化と相俟つて、端末処理
作業における心線の引裂きが一層容易になる。 In addition, since the coat is divided into the primary and secondary coats, the primary coat is semi-cured, and the secondary coat is sufficiently cured, the normal protection is sufficient and the tearing of the core wire during terminal processing etc. is prevented. This can be done more easily than when all the coat layers are sufficiently cured at once. In particular, as mentioned above, by using a die for the primary coat that narrows the passage between each core wire by having opposing corrugated surfaces, the primary coat has a constricted shape at the connecting part between the parallel core wires. and
This, combined with the semi-curing of the primary coat, makes it easier to tear the core wire during the termination process.
[実施例]
次に本発明の実施態様を図面に基いてその使用
装置とともに順次説明する。[Example] Next, embodiments of the present invention will be sequentially described with reference to the drawings and an apparatus for use thereof.
サプライスタンド1のボビン2から繰出される
複数本(図の場合4本)の光フアイバー心線f
を、幅寄せローラ3により心線間隔を狭めるよう
に幅寄せしつつ、後続の一次コート槽4に送入す
る。 A plurality of (four in the figure) optical fiber cores f are fed out from the bobbin 2 of the supply stand 1.
is fed into the subsequent primary coating tank 4 while being width-aligned by a width-aligning roller 3 to narrow the gap between core wires.
前記の幅寄せローラ3としては、例えば第2図
のイに示すように軸心を垂直にして回転自在に立
設したローラ3a、あるいは同図のロに示すよう
に心線太さに相当する寸法で軸心を傾斜させて設
けたローラ3b、あるいは同図ハのように心線の
太さに相当する寸法で心線通過部分に外径差を設
けて立設したローラ3cが使用され、複数の心線
fを相互に接触しないように上下に間隔を開けて
接触通過させるように構成される。 The above-mentioned width adjusting roller 3 may be, for example, a roller 3a which is rotatably installed with its axis perpendicular as shown in FIG. A roller 3b whose axis is inclined in the dimension, or a roller 3c which is installed upright with a dimension corresponding to the thickness of the core wire and a difference in outer diameter in the part where the core wire passes, as shown in FIG. It is configured so that a plurality of core wires f are allowed to pass in contact with each other at intervals vertically so as not to contact each other.
そして前記のように幅寄せされ一次コート槽4
に入つた心線fは、ダイの形状に応じて並列して
この一次コート槽4を通過し、表面にウレタン系
等のUV樹脂がコート層の全厚に応じて設定され
た所要の厚みにコートされる。この一次コート槽
4のダイ5は、第4図〔a〕に示す通り、波形面
の対向によつて各心線fの通路を並設し各通路間
を狭くした形状とし、これに対応して各心線毎に
コートされるように構成するのが、後述の二次コ
ートの際の並列矯正が容易に行なえ好ましい。 Then, as described above, the primary coating tank 4 is
The core wires f entering the die pass through this primary coating tank 4 in parallel according to the shape of the die, and UV resin such as urethane is coated on the surface to the required thickness set according to the total thickness of the coating layer. coated. As shown in FIG. 4 (a), the die 5 of this primary coating tank 4 has a shape in which the passages for each core wire f are arranged in parallel with the corrugated surfaces facing each other, and the passages between each passage are narrowed. It is preferable to configure the coating so that each core wire is coated by applying the coating to each core, because parallel correction can be easily performed during the secondary coating described later.
そして前記一次コート槽4を出た心線fを、水
銀ランプ(図示せず)等を線源とする紫外線照射
装置6を通過させ、この間に前記UV樹脂コート
層を紫外線照射によつてゲル分率が40〜60%とな
る程度に半硬化させる。しかしてこの状態では前
記コートが半硬化であるために、各心線が並列状
態に保持されてはいるが、その並列を矯正できる
状態になつている。 Then, the core wire f exiting the primary coating tank 4 is passed through an ultraviolet irradiation device 6 using a mercury lamp (not shown) or the like as a radiation source, during which time the UV resin coating layer is gelled by ultraviolet irradiation. Semi-cure to an extent of 40 to 60%. However, in the lever state, since the coat is semi-cured, the core wires are held in parallel, but the parallelism can be corrected.
前記の工程において半硬化された光フアイバー
心線fは、引続いて次の二次コート槽7を通過さ
せるもので、ここで心線fの並列具合がダイ通過
により矯正されながらUV樹脂による二次コート
が施される。この二次コート槽7で用いられるダ
イ8は、第4図〔b〕に示すように扁平な通孔に
して、仕上りが所定寸法のテープ状に成形できる
ようにしてある。 The optical fiber core f semi-hardened in the above step is then passed through the next secondary coating tank 7, where the parallel state of the core fiber f is corrected by passing through a die and is coated with UV resin. Next coat is applied. The die 8 used in the secondary coating tank 7 has a flat through hole, as shown in FIG. 4 (b), so that it can be finished into a tape shape with a predetermined size.
この二次コート槽7を出た心線fを、紫外線照
射装置9を通過させて、その間に十分に硬化、す
なわち紫外線照射後のゲル分率が例えば95%前後
となる程度にまで硬化させて後、巻取機10によ
り巻取る。 The core wire f that has come out of the secondary coating tank 7 is passed through an ultraviolet irradiation device 9, during which it is sufficiently cured, that is, to the extent that the gel fraction after ultraviolet irradiation is, for example, around 95%. After that, it is wound up by a winding machine 10.
なお、前記一次コート槽4、二次コート槽7の
UV樹脂は、マイクロポンプ(図示せず)により
循環され供給される。また、前記一次および二次
のコート槽4および7は、第2図に示すように槽
内の樹脂粘度を一定に保つように、その周壁に二
重壁構造等による保温用温湯空孔11が設けられ
て、この空孔に図示しない配管系により温湯等が
循環供給されるようになつている。 In addition, the primary coating tank 4 and the secondary coating tank 7
The UV resin is circulated and supplied by a micropump (not shown). In addition, the primary and secondary coating tanks 4 and 7 have hot water holes 11 for heat retention in their peripheral walls with a double wall structure or the like so as to keep the resin viscosity in the tank constant as shown in FIG. Hot water and the like are circulated and supplied to this hole through a piping system (not shown).
なお、UV樹脂としては、ウレタン系UV樹脂
(例えば日本合成ゴム社製、銘柄:R3056又は
R3050)が好適に用いられるが、もちろん他の
UV樹脂であつてもよい。 In addition, as the UV resin, urethane-based UV resin (for example, manufactured by Japan Synthetic Rubber Co., Ltd., brand: R3056 or
R3050) is preferably used, but of course other
It may also be UV resin.
さらに上記の一次コートおよび二次コートの層
厚は、光フアイバー心線の径や本数等によつても
異なるが、通常それぞれ全コート層厚の1/2の層
厚に設定される。例えば外径250μmの光フアイ
バー心線4本を並列させる場合、
一次コート寸法(外形):0.35mm×1mm
二次コート寸法(外形):0.4mm×1.1mm
とする。 Further, the layer thicknesses of the above-mentioned primary coat and secondary coat vary depending on the diameter and number of optical fiber core wires, but are usually set to 1/2 of the total coat layer thickness. For example, when arranging four optical fibers with an outer diameter of 250 μm in parallel, the primary coat dimensions (external dimensions): 0.35 mm x 1 mm and the secondary coat dimensions (external dimensions): 0.4 mm x 1.1 mm.
また一次コートの紫外線照射量および二次コー
トの紫外線照射量は、上述したように、各々一次
コートの紫外線照射後のゲル分率40〜60%、二次
コートの紫外線照射後のゲル分率95%前後となる
ように設定する。 In addition, as mentioned above, the amount of UV irradiation for the first coat and the amount of UV irradiation for the second coat are as follows: the gel fraction after UV irradiation of the primary coat is 40 to 60%, and the gel fraction after UV irradiation of the second coat is 95%. Set it to be around %.
例えば、UV樹脂として、日本合成ゴム社製ウ
レタン系UV樹脂(銘柄:R3056又はR3050)を
用い、前記した条件で、外径250μmの光フアイ
バー心線4本を並列させたテープ型光フアイバー
心線を製造したところ、コート層内の各心線の並
列状態は良好であり、しかも端末部における各心
線毎の引裂き分離作業も従来品に比して容易なも
のが得られた。 For example, using urethane-based UV resin (brand: R3056 or R3050) manufactured by Japan Synthetic Rubber Co., Ltd. as the UV resin, a tape-type optical fiber core wire is prepared by arranging four optical fiber core wires with an outer diameter of 250 μm in parallel under the above-mentioned conditions. When manufactured, the parallel state of each core wire in the coating layer was good, and the tearing and separation work for each core wire at the end portion was also easier than with conventional products.
[発明の効果]
上記したように本発明の製造方法によれば、一
次と二次に分けてかつ一次コートを、特に波形面
の対向による特殊なダイを用いて施し、かつこれ
をゲル分率40〜60%の半硬化にしておいて二次コ
ートを施すことにより、各心線の保護を良好にな
して、しかも心線の並列状態が良く、また端末処
理作業も容易なテープ型光フアイバー心線を得る
ことができる。[Effects of the Invention] As described above, according to the manufacturing method of the present invention, the primary coating is divided into the primary coating and the secondary coating using a special die with opposing corrugated surfaces. A tape-type optical fiber that is semi-cured to 40-60% and then applied with a secondary coat to provide good protection for each core, with good parallelism of the cores, and easy termination work. You can get the cord.
第1図は本発明の製造方法の実施例を示す略示
平面図、第2図はイ,ロ,ハは幅寄せローラを例
示する斜視図、第3図は一次(二次)のコート槽
を拡大して示す断面斜視図、第4図〔a〕,〔b〕
は各コート槽のダイの通孔形状を例示する斜視図
である。
1……サプライスタンド、3……幅寄せロー
ラ、4……一次コート槽、5……ダイ、6……紫
外線照射装置、7……二次コート槽、8……ダ
イ、9……紫外線照射装置、10……巻取機。
Fig. 1 is a schematic plan view showing an embodiment of the manufacturing method of the present invention, Fig. 2 is a perspective view illustrating width adjustment rollers, and Fig. 3 is a primary (secondary) coating tank. Fig. 4 [a], [b]
FIG. 2 is a perspective view illustrating the shape of a through hole of a die in each coating tank. 1... Supply stand, 3... Width shifting roller, 4... Primary coating tank, 5... Die, 6... Ultraviolet irradiation device, 7... Secondary coating tank, 8... Die, 9... Ultraviolet irradiation Device, 10... winding machine.
Claims (1)
て、波形面の対向によつて各心線の通路を並設し
各通路間を狭くしたダイを備える一次コート槽を
通過させ、各心線の表面に前記ダイ形状に応じた
並列状態にして一次コートを塗布し、このコート
をゲル分率40〜60%に半硬化させる工程と、該工
程に引続き二次コートを塗布しこれを十分硬化さ
せる工程とからなることを特徴とするテープ型光
フアイバー心線の製造方法。1. The optical fiber cores to be fed out are arranged in parallel and passed through a primary coating tank equipped with a die in which the channels of each core are arranged in parallel with opposing corrugated surfaces and the distance between each channel is narrow. A step of applying a primary coat to the surface of the die in a parallel state according to the shape of the die, semi-curing this coat to a gel fraction of 40 to 60%, and following this step, applying a second coat and fully curing it. A method for manufacturing a tape-type optical fiber core, comprising the steps of:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63191387A JPH0240604A (en) | 1988-07-29 | 1988-07-29 | Production of tape type coated optical fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63191387A JPH0240604A (en) | 1988-07-29 | 1988-07-29 | Production of tape type coated optical fiber |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0240604A JPH0240604A (en) | 1990-02-09 |
JPH0547807B2 true JPH0547807B2 (en) | 1993-07-19 |
Family
ID=16273753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63191387A Granted JPH0240604A (en) | 1988-07-29 | 1988-07-29 | Production of tape type coated optical fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0240604A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6163810A (en) * | 1984-09-05 | 1986-04-02 | Sumitomo Electric Ind Ltd | Production of tape-like fiber core |
JPS6287919A (en) * | 1985-10-14 | 1987-04-22 | Furukawa Electric Co Ltd:The | Production of core wire for optical fiber tape |
JPS62131213A (en) * | 1985-12-04 | 1987-06-13 | Sumitomo Electric Ind Ltd | Preparation of tape fiber |
-
1988
- 1988-07-29 JP JP63191387A patent/JPH0240604A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6163810A (en) * | 1984-09-05 | 1986-04-02 | Sumitomo Electric Ind Ltd | Production of tape-like fiber core |
JPS6287919A (en) * | 1985-10-14 | 1987-04-22 | Furukawa Electric Co Ltd:The | Production of core wire for optical fiber tape |
JPS62131213A (en) * | 1985-12-04 | 1987-06-13 | Sumitomo Electric Ind Ltd | Preparation of tape fiber |
Also Published As
Publication number | Publication date |
---|---|
JPH0240604A (en) | 1990-02-09 |
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