JP5059707B2 - Optical fiber ribbon and manufacturing method thereof - Google Patents
Optical fiber ribbon and manufacturing method thereof Download PDFInfo
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この発明は、光ファイバテープ心線およびその製造方法に関するものである。 The present invention relates to an optical fiber ribbon and a method for manufacturing the same.
従来、装置間、基板間で光ファイバを効率的に配線するために、複数の光ファイバ素線を並べて難燃性樹脂等で被覆した光ファイバテープ心線が用いられている(例えば、特許文献1を参照。)。
該光ファイバテープ心線は、先端にコネクタを取り付けて用いられることが多く、コネクタ取り付けの際に表裏を識別することが重要になる。
しかしながら、難燃性樹脂は着色が困難であり、着色剤、添加物等を加えると難燃性が低下してしまう問題があった。
また、この問題を補おうとして樹脂を厚くすると、取扱いの規格から外れて配線作業に支障をきたしてしまう。
Conventionally, in order to efficiently route optical fibers between apparatuses and between substrates, optical fiber ribbons in which a plurality of optical fiber strands are arranged and covered with a flame-retardant resin or the like have been used (for example, Patent Documents). 1).
The optical fiber ribbon is often used with a connector attached to the tip, and it is important to identify the front and back when attaching the connector.
However, the flame retardant resin is difficult to color, and there is a problem that the flame retardancy is lowered when a colorant, an additive, or the like is added.
Further, if the resin is thickened to make up for this problem, it will deviate from the standard of handling and hinder the wiring work.
本発明は、以上のような問題点に鑑みて為されたものであり、その目的とする処は、表裏を容易に識別でき、一定の難燃性を有し、薄くて配線作業に適した光ファイバテープ心線およびその製造方法を提供することにある。 The present invention has been made in view of the problems as described above, and the intended process is that the front and back can be easily identified, has a certain flame resistance, is thin and suitable for wiring work. An object of the present invention is to provide an optical fiber ribbon and a manufacturing method thereof.
(1)並列した複数の光ファイバ素線の上下両面を、難燃性樹脂で被覆した光ファイバテープ心線であって、一方の表面はUL94V−1規格を満たす高難燃性樹脂(A)で被覆され、他方の表面はUL94HB規格を満たす低難燃性樹脂(B)で被覆され、前記高難燃性樹脂(A)と前記低難燃性樹脂(B)は異なる色を有し、前記低難燃性樹脂(B)はUL94V−1規格を満たす高難燃性樹脂(C)を介して設けられており、前記高難燃性樹脂(C)は、光ファイバ素線間の間隙を埋めるようにすり切り状態に形成されており、前記高難燃性樹脂(A)と前記高難燃性樹脂(C)は、同一の樹脂であることを特徴とする光ファイバテープ心線。
(2)前記高難燃性樹脂(A)、低難燃性樹脂(B)、高難燃性樹脂(C)は、難燃性シ
リコーンゴム樹脂であることを特徴とする前記(1)記載の光ファイバテープ心線。
(3)前記並列した複数の光ファイバ素線の側面が、前記高難燃性樹脂(A)または前記低難燃性樹脂(B)で被覆されていることを特徴とする前記(1)記載の光ファイバテープ心
(4)前記高難燃性樹脂(C)が、前記光ファイバ素線の上下両面の間隙を埋めるようにすり切り状態に形成されていることを特徴とする前記(1)記載の光ファイバテープ心線。
(1) An optical fiber ribbon in which upper and lower surfaces of a plurality of optical fiber wires arranged in parallel are covered with a flame retardant resin, one surface of which is a highly flame retardant resin that satisfies UL94V-1 standard (A) The other surface is coated with a low flame retardant resin (B) that meets UL94HB standards, and the high flame retardant resin (A) and the low flame retardant resin (B) have different colors, The low flame retardant resin (B) is provided via a high flame retardant resin (C) satisfying UL94V-1 standard, and the high flame retardant resin (C) is a gap between optical fiber strands. An optical fiber ribbon , wherein the highly flame retardant resin (A) and the highly flame retardant resin (C) are the same resin .
(2) The high flame retardant resin (A), the low flame retardant resin (B), and the high flame retardant resin (C) are flame retardant silicone rubber resins. Optical fiber ribbon.
(3) Said (1) description characterized by the side surface of the said some parallel optical fiber strand being coat | covered with the said highly flame-retardant resin (A) or the said flame-retardant resin (B). (1) The optical fiber tape core (4), wherein the highly flame retardant resin (C) is formed in a ground state so as to fill a gap between upper and lower surfaces of the optical fiber. Optical fiber ribbon.
本発明によれば、表裏を容易に識別でき、一定の難燃性を有し、薄くて配線作業に適した光ファイバテープ心線およびその製造方法を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the front and back can be identified easily, it can provide the optical fiber tape core wire which has a certain flame retardance, is thin and suitable for wiring work, and its manufacturing method.
(実施形態1)
図1を用いて本発明の実施形態1を説明する。
図1は実施形態1の光ファイバテープ心線の正面図である。
20は高難燃性樹脂(A)、30は低難燃性樹脂(B)、40は高難燃性樹脂(C)、Fは光ファイバ素線、T1は実施形態1の光ファイバテープ心線、dは光ファイバ素線Fの外径、hはテープ高さ、wはテープ幅である。
(Embodiment 1)
A first embodiment of the present invention will be described with reference to FIG.
FIG. 1 is a front view of the optical fiber ribbon of the first embodiment.
20 is a high flame retardant resin (A), 30 is a low flame retardant resin (B), 40 is a high flame retardant resin (C), F is an optical fiber, and T1 is the optical fiber tape core of the first embodiment. The line, d is the outer diameter of the optical fiber F, h is the tape height, and w is the tape width.
実施形態1の光ファイバテープ心線T1は、並列した複数の光ファイバ心線Fの上下両面を、難燃性樹脂で被覆した光ファイバテープ心線であって、一方の表面は高難燃性樹脂(A)20で被覆され、他方の表面は低難燃性樹脂(B)30で被覆され、高難燃性樹脂(A)20と低難燃性樹脂(B)30は異なる色を有し、低難燃性樹脂(B)30は高難燃性樹脂(C)40を介して設けられており、高難燃性樹脂(C)40は、光ファイバ素線F間の間隙を埋めるようにすり切り状態に形成されていることを特徴とする。
実施形態1の光ファイバテープ心線T1によれば、高難燃性樹脂(A)20と低難燃性樹脂(B)30が異なる色を呈することで表裏を容易に識別できる。
また、上面に低難燃性樹脂(B)30を用いることで低下する難燃性を、高難燃性樹脂(C)40を併せて用いることで補強し、一定の難燃性を担保している。
さらに、高難燃性樹脂(C)40を光ファイバ素線F間の間隙のみを埋めるようにすり切り状態に形成することで、テープ高さhを低減して薄くて配線作業に適した光ファイバテープ心線としている。
The optical fiber ribbon T1 of Embodiment 1 is an optical fiber ribbon in which the upper and lower surfaces of a plurality of optical fibers F arranged in parallel are covered with a flame retardant resin, and one surface has high flame retardancy. The other surface is coated with the resin (A) 20 and the other surface is coated with the low flame retardant resin (B) 30, and the high flame retardant resin (A) 20 and the low flame retardant resin (B) 30 have different colors. The low flame retardant resin (B) 30 is provided via the high flame retardant resin (C) 40, and the high flame retardant resin (C) 40 fills the gap between the optical fiber strands F. Thus, it is formed in a ground state.
According to the optical fiber ribbon T1 of the first embodiment, the front and back can be easily identified by the high flame retardant resin (A) 20 and the low flame retardant resin (B) 30 exhibiting different colors.
Moreover, the flame retardance which is reduced by using the low flame retardant resin (B) 30 on the upper surface is reinforced by using the high flame retardant resin (C) 40 together to ensure a certain flame retardancy. ing.
Furthermore, by forming the highly flame-retardant resin (C) 40 in a ground state so as to fill only the gaps between the optical fiber strands F, the optical fiber suitable for wiring work is reduced by reducing the tape height h. The tape core is used.
難燃性樹脂としては、ハロゲン系難燃剤、リン系難燃剤、無機系難燃剤を添加した樹脂が挙げられ、例えば難燃性ABS樹脂、難燃性シリコーンゴム樹脂、難燃性ポリイミド、難燃性塩化ビニル、難燃性ポリエステルエラストマー、難燃性ポリオレフィンエラストマーが挙げられ、中でも柔軟性を有する難燃性シリコーンゴム樹脂や、難燃性ポリエステルエラストマーを使用するのが好ましい。さらに、光ファイバ素線F表面との接着性が良好な難燃性シリコーンゴム樹脂がより好ましい。
高難燃性樹脂(A)20および高難燃性樹脂(C)40としては、UL94 V−1規格を満たす樹脂であることが好ましい。
なお、前記高難燃性樹脂(A)と前記高難燃性樹脂(C)は、同一の樹脂であってもよい。
また、より好ましくはUL94 V−0規格を満たす樹脂である。
なお、規格試験は、UL94に準拠して、垂直燃焼試験実施し、基準を満たすかどうかで判定する。
垂直燃焼試験は、試料(長さ127mm、幅12.7mm、厚さ12.7mm以下)の上端を固定用クランプで固定して垂直に保持し、下端に10秒間ガスバーナーの炎を接炎させる。燃焼が30秒以内に止まったならば、さらに10秒接炎させる。
判定基準は以下のとおりである。
Examples of the flame retardant resin include resins added with a halogen flame retardant, a phosphorus flame retardant, and an inorganic flame retardant. For example, flame retardant ABS resin, flame retardant silicone rubber resin, flame retardant polyimide, flame retardant Examples thereof include flame retardant vinyl chloride, flame retardant polyester elastomer, and flame retardant polyolefin elastomer. Among them, it is preferable to use a flame retardant silicone rubber resin having flexibility and a flame retardant polyester elastomer. Furthermore, a flame retardant silicone rubber resin having good adhesion to the surface of the optical fiber F is more preferable.
The high flame retardant resin (A) 20 and the high flame retardant resin (C) 40 are preferably resins that satisfy the UL94 V-1 standard.
The high flame retardant resin (A) and the high flame retardant resin (C) may be the same resin.
More preferably, the resin satisfies the UL94 V-0 standard.
The standard test is performed based on UL94, and a vertical combustion test is performed to determine whether the standard is satisfied.
In the vertical combustion test, the upper end of the sample (length 127 mm, width 12.7 mm, thickness 12.7 mm or less) is fixed with a fixing clamp and held vertically, and the flame of the gas burner is in contact with the lower end for 10 seconds. . If the combustion stops within 30 seconds, the flame is contacted for another 10 seconds.
The judgment criteria are as follows.
(V−0)
(1)接炎後10秒以上燃焼を続ける試料がない
(2)10回の総燃焼時間50秒を超えない
(3)固定用クランプの位置まで燃焼する試料がない
(4)試料の下方に置かれた脱脂綿を発火させる燃焼する粒子を落下させる試料がない
(5)2回目の接炎後30秒以上赤熱を続ける試料がない
(V-0)
(1) There is no sample that continues to burn for more than 10 seconds after flame contact (2) The total combustion time of 10 times does not exceed 50 seconds (3) There is no sample that burns to the position of the fixing clamp (4) Below the sample There is no sample that drops burning particles that ignite absorbent cotton placed (5) There is no sample that continues red heat for more than 30 seconds after the second flame contact
(V−1)
(1)接炎後30秒以上燃焼を続ける試料がない
(2)10回の総燃焼時間250秒を超えない
(3)固定用クランプの位置まで燃焼する試料がない
(4)試料の下方に置かれた脱脂綿を発火させる燃焼する粒子を落下させる試料がない
(5)2回目の接炎後60秒以上赤熱を続ける試料がない
(V-1)
(1) There is no sample that continues to burn for more than 30 seconds after flame contact. (2) The total combustion time of 10 times does not exceed 250 seconds. (3) There is no sample that burns to the position of the fixing clamp. (4) Below the sample There is no sample that drops burning particles that ignite the absorbent cotton placed. (5) There is no sample that continues red heat for more than 60 seconds after the second flame contact.
低難燃性樹脂(B)30としては、高難燃性樹脂(A)20と異なる色が必要であり、灰色、赤褐色、黒色、赤色等があげられる。
また低難燃性樹脂(B)は、少なくともUL94 HBを満たすことが好ましい。規格試験方法は短冊状の試験片を水平において燃焼させ、燃焼が進む速度で合否判定する。判定基準は、100mm標準線まで燃えないこととする。
The low flame retardant resin (B) 30 needs a color different from that of the high flame retardant resin (A) 20, and examples thereof include gray, reddish brown, black, and red.
The low flame retardant resin (B) preferably satisfies at least UL94 HB. In the standard test method, a strip-shaped test piece is burned horizontally, and a pass / fail judgment is made at the speed at which the combustion proceeds. Judgment criteria shall not burn to 100mm standard line.
光ファイバ素線Fとしては、光ファイバテープ心線の使用目的に応じて適宜選択される。例えば、石英系またはプラスチック製のシングルモードファイバ、マルチモードファイバなどが本発明において好ましく使用される。また、光ファイバ素線Fの最外表面は、難燃性樹脂と良好に接着することが好ましく、例えばウレタン系樹脂、アクリル系樹脂で被覆されているものを挙げられる。また光ファイバ素線Fの外径は特に限定されるものではなく、125μmや250μm、900μmのもの等が使用される。
テープ幅wは、先述の燃焼試験の規格を満たせばよく、限定されるものではないが、好ましくはテープ両側面の樹脂厚みは50μm以上100μm未満であることが好ましい。
テープ高さhは400μm未満であることが好ましく、さらに好ましくは360μm未満である。
The optical fiber F is appropriately selected according to the purpose of use of the optical fiber ribbon. For example, a single mode fiber or a multimode fiber made of quartz or plastic is preferably used in the present invention. Moreover, it is preferable that the outermost surface of the optical fiber F is bonded well to the flame retardant resin, and examples thereof include those coated with urethane resin and acrylic resin. The outer diameter of the optical fiber F is not particularly limited, and those having a diameter of 125 μm, 250 μm, 900 μm, or the like are used.
The tape width w is not limited as long as it satisfies the above-mentioned standard of the combustion test, but the resin thickness on both sides of the tape is preferably 50 μm or more and less than 100 μm.
The tape height h is preferably less than 400 μm, more preferably less than 360 μm.
次に、図2を用いて光ファイバテープ心線の製造方法を説明する。
図2(a)は、高難燃性樹脂(A)および高難燃性樹脂(C)を被覆した状態の正面図、図2(b)は、高難燃性樹脂(C)をすり切りした状態の正面図、図2(c)は、低難燃性樹脂(B)を被覆した状態の正面図である。
41はすり切り面である。
Next, the manufacturing method of an optical fiber ribbon is demonstrated using FIG.
FIG. 2A is a front view of a state in which the high flame retardant resin (A) and the high flame retardant resin (C) are coated, and FIG. 2B is a diagram in which the high flame retardant resin (C) is worn out. FIG. 2C is a front view of the state where the low flame retardant resin (B) is coated.
本発明の光ファイバテープ心線の製造方法は、複数本の光ファイバ素線を並列して、難燃性樹脂で被覆する光ファイバテープ心線の製造方法であって、複数本の光ファイバ素線Fの表面を高難燃性樹脂(C)40で被覆する工程、高難燃性樹脂(C)40をすり切って、光ファイバ素線F間の間隙が埋められたすり切り面41を形成する工程、すり切り面41を低難燃性樹脂(B)30で被覆する工程、を有することを特徴とする。
まず、図2(a)に示すように、複数本の光ファイバ素線Fの上面を高難燃性樹脂(C)40で被覆する。
図2(a)では下面を高難燃性樹脂(A)で被覆しているが、高難燃性樹脂(A)に代えて高難燃性樹脂(C)を用いてもよく、他の高難燃性樹脂を用いてもよい。
次に、図2(b)に示すように、高難燃性樹脂(C)40をすり切って、光ファイバ素線F間の間隙が埋められたすり切り面41を形成する。
すり切りにはヘラやロール等を用いることができる。
そして、図2(c)に示すように、すり切り面41を低難燃性樹脂(B)30で被覆する。
光ファイバ素線Fの側面は、高難燃性樹脂(A)または低難燃性樹脂(B)で被覆することが好ましい。
A method for manufacturing an optical fiber ribbon of the present invention is a method for manufacturing an optical fiber ribbon in which a plurality of optical fiber strands are coated in parallel with a flame retardant resin, A step of coating the surface of the wire F with the highly flame retardant resin (C) 40, and the highly flame retardant resin (C) 40 is ground to form a
First, as shown to Fig.2 (a), the upper surface of the some optical fiber F is coat | covered with the highly flame-retardant resin (C) 40.
In FIG. 2 (a), the lower surface is covered with the highly flame retardant resin (A). However, the highly flame retardant resin (C) may be used instead of the highly flame retardant resin (A). A highly flame retardant resin may be used.
Next, as shown in FIG. 2B, the highly flame-retardant resin (C) 40 is ground to form a
A spatula, a roll, etc. can be used for grinding.
Then, as shown in FIG. 2C, the
The side surface of the optical fiber F is preferably coated with a high flame retardant resin (A) or a low flame retardant resin (B).
(実施形態2)
次に、図3を用いて本発明の実施形態2を説明する。
図3は実施形態2の光ファイバテープ心線の正面図である。
T2は実施形態2の光ファイバテープ心線である。
実施形態2の光ファイバテープ心線T2は、高難燃性樹脂(A)20が高難燃性樹脂(C)40を介して設けられており、高難燃性樹脂(C)40は光ファイバ素線F間の間隙を埋めるようにすり切り状態に形成されていることを特徴とする。
その他の構成は実施形態1と同一なので、詳細な説明は省略する。
下面についても、高難燃性樹脂(C)40をすり切りして高難燃性樹脂(A)20を設けることで、作製の手間は掛かるが樹脂の選択の幅を広げることができる。
すなわち、図3では高難燃性樹脂(A)20を用いているが、高難燃性樹脂(C)40を用いることで一定の難燃性はすでに担保されているので、低難燃性樹脂(B)とは異なる色を有する他の低難燃性樹脂等を用いることもできる。
(Embodiment 2)
Next, Embodiment 2 of the present invention will be described with reference to FIG.
FIG. 3 is a front view of the optical fiber ribbon of the second embodiment.
T2 is the optical fiber ribbon of the second embodiment.
In the optical fiber ribbon T2 of the second embodiment, the high flame retardant resin (A) 20 is provided via the high flame retardant resin (C) 40, and the high flame retardant resin (C) 40 is light. It is characterized by being formed in a ground state so as to fill the gap between the fiber strands F.
Since other configurations are the same as those of the first embodiment, detailed description thereof is omitted.
As for the lower surface, the high flame retardant resin (C) 40 is worn out to provide the high flame retardant resin (A) 20, so that the selection of the resin can be widened although it takes time for production.
That is, although the highly flame-retardant resin (A) 20 is used in FIG. 3, a certain flame resistance is already secured by using the highly flame-retardant resin (C) 40, so that the low flame-retardant resin is used. Other low flame retardant resins having a color different from that of the resin (B) can also be used.
以下、実施例を用いて説明する。
<実施例1>
実施例1では、実施形態1の光ファイバテープ心線を作製した(図1を参照)。
まず、複数本の光ファイバ素線(住友電工社製シングルモードファイバSM、外径250μm)を並列して、上下両面を高難燃性樹脂(モメンティブ・パフォーマンス・マテリアルズジャパン社製難燃性シリコーンゴム樹脂、商品名:「TSE3853W」、白色、UL94 V−0規格を満たす)で被覆した。
すなわち、高難燃性樹脂(A)と高難燃性樹脂(C)を同一の樹脂とした。
次に、上面をヘラですり切ってすり切り面を形成した。
そして、該すり切り面41を低難燃性樹脂(東レダウコーニング社製難燃性シリコーンゴム樹脂、商品名:「SE737」、灰色、UL94 HB規格を満たす)で被覆した。
Hereinafter, description will be made using examples.
<Example 1>
In Example 1, the optical fiber ribbon of Embodiment 1 was produced (see FIG. 1).
First, multiple optical fiber strands (single-mode fiber SM manufactured by Sumitomo Electric Co., Ltd., outer diameter 250 μm) are juxtaposed, and a highly flame-retardant resin (momentive performance materials Japan manufactured flame-retardant silicone) on both upper and lower surfaces. Rubber resin, trade name: “TSE3853W”, white, meets UL94 V-0 standard).
That is, the highly flame retardant resin (A) and the highly flame retardant resin (C) were the same resin.
Next, the upper surface was cut with a spatula to form a cut surface.
The
<実施例2>
実施例2では、実施形態2の光ファイバテープ心線を作製した(図3を参照)。
まず、複数本の光ファイバ素線(住友電工社製シングルモードファイバSM、外径250μm)を並列して、上下両面を高難燃性樹脂(モメンティブ・パフォーマンス・マテリアルズジャパン社製難燃性シリコーンゴム樹脂、商品名:「TSE3853W」、白色、UL94 V−0規格を満たす)で被覆した。
次に、上下両面をヘラですり切ってすり切り面を形成した。
そして、上面を低難燃性樹脂(東レダウコーニング社製難燃性シリコーンゴム樹脂、商品名:「SE737」、灰色、UL94 HB規格を満たす)で被覆し、下面を高難燃性樹脂(信越シリコーン社製難燃性シリコーンゴム樹脂、商品名:「KE40RTV」、白色、UL94 V−0規格を満たす)で被覆した。
<Example 2>
In Example 2, the optical fiber ribbon of Embodiment 2 was produced (see FIG. 3).
First, multiple optical fiber strands (single-mode fiber SM manufactured by Sumitomo Electric Co., Ltd., outer diameter 250 μm) are juxtaposed, and a highly flame-retardant resin (momentive performance materials Japan manufactured flame-retardant silicone) on both upper and lower surfaces. Rubber resin, trade name: “TSE3853W”, white, meets UL94 V-0 standard).
Next, the upper and lower surfaces were cut with a spatula to form a cut surface.
Then, the upper surface is covered with a low flame retardant resin (a flame retardant silicone rubber resin manufactured by Toray Dow Corning Co., Ltd., trade name: “SE737”, gray, meets UL94 HB standard), and the lower surface is coated with a high flame retardant resin (Shin-Etsu). A flame retardant silicone rubber resin manufactured by Silicone Co., Ltd., trade name: “KE40RTV”, white, meets UL94 V-0 standard).
<比較例1>
比較例1では、図4に示す光ファイバテープ心線を作製した。
図4は比較例1の光ファイバテープ心線の正面図である。
Taは比較例1の光ファイバテープ心線である。
まず、複数本の光ファイバ素線(住友電工社製シングルモードファイバSM、外径250μm)を並列して、下面を高難燃性樹脂(モメンティブ・パフォーマンス・マテリアルズジャパン社製難燃性シリコーンゴム樹脂、商品名:「TSE3853W」、白色、UL94 V−0規格を満たす)で被覆した。
そして、上面を低難燃性樹脂(東レダウコーニング社製難燃性シリコーンゴム樹脂、商品名:「SE737」、灰色、UL94 HB規格を満たす)で被覆した。
<Comparative Example 1>
In Comparative Example 1, an optical fiber ribbon shown in FIG. 4 was produced.
4 is a front view of the optical fiber ribbon of Comparative Example 1. FIG.
Ta is the optical fiber ribbon of Comparative Example 1.
First, a plurality of optical fiber strands (Sumitomo Electric single mode fiber SM, outer diameter 250 μm) are arranged in parallel, and the bottom surface is made of a highly flame retardant resin (a flame retardant silicone rubber manufactured by Momentive Performance Materials Japan). Resin, trade name: “TSE3853W”, white, satisfying UL94 V-0 standard).
Then, the upper surface was covered with a low flame retardant resin (a flame retardant silicone rubber resin manufactured by Toray Dow Corning, trade name: “SE737”, gray, satisfying UL94 HB standard).
<比較例2>
比較例2では、図5に示す光ファイバテープ心線を作製した。
図5は比較例2の光ファイバテープ心線の正面図である。
Tbは比較例2の光ファイバテープ心線である。
まず、複数本の光ファイバ素線(住友電工社製シングルモードファイバSM、外径250μm)を並列して、上下両面を高難燃性樹脂(モメンティブ・パフォーマンス・マテリアルズジャパン社製難燃性シリコーンゴム樹脂、商品名:「TSE3853W」、白色、UL94 V−0規格を満たす)で被覆した。
そして、上面を低難燃性樹脂(東レダウコーニング社製難燃性シリコーンゴム樹脂、商品名:「SE737」、灰色、UL94 HB規格を満たす)で被覆した。
<Comparative example 2>
In Comparative Example 2, the optical fiber ribbon shown in FIG. 5 was produced.
5 is a front view of the optical fiber ribbon of Comparative Example 2. FIG.
Tb is the optical fiber ribbon of Comparative Example 2.
First, multiple optical fiber strands (single-mode fiber SM manufactured by Sumitomo Electric Co., Ltd., outer diameter 250 μm) are juxtaposed, and a highly flame-retardant resin (momentive performance materials Japan manufactured flame-retardant silicone) on both upper and lower surfaces. Rubber resin, trade name: “TSE3853W”, white, meets UL94 V-0 standard).
Then, the upper surface was covered with a low flame retardant resin (a flame retardant silicone rubber resin manufactured by Toray Dow Corning, trade name: “SE737”, gray, satisfying UL94 HB standard).
実施例および比較例の主な条件を表1に示す。 Table 1 shows the main conditions of Examples and Comparative Examples.
(評価)
実施例および比較例の光ファイバテープ心線を以下の方法で評価した。
(Evaluation)
The optical fiber ribbons of Examples and Comparative Examples were evaluated by the following methods.
(識別性)
上下の面を目視で識別できるか判定した。
○:識別可能、×:識別不能
(Identity)
It was determined whether the upper and lower surfaces could be visually identified.
○: Identifiable, ×: Unidentifiable
(難燃性)
UL VW−1燃焼試験に基づく垂直燃焼試験を行った。具体的には試料を330mmの長さに切り、試料を垂直に保持し、20度の角度でバーナーの炎をあて15秒着火、15秒休止を5回繰り返し、試料の燃焼の程度を調べた。判定基準として、以下のようにした。
(1)残炎による燃焼が60秒を超えないこと。
(2)表示旗が25%以上燃損しないこと。
(3)落下物によって底部の綿が燃焼しないこと。
○:上記(1)〜(3)の全てを満たしたもの
×:下記(1)〜(3)を1つでも満たさないもの
(Flame retardance)
A vertical combustion test based on the UL VW-1 combustion test was performed. Specifically, the sample was cut to a length of 330 mm, the sample was held vertically, the flame of the burner was applied at an angle of 20 degrees, and the ignition for 15 seconds and the pause for 15 seconds were repeated 5 times, and the degree of combustion of the sample was examined. . The judgment criteria were as follows.
(1) Combustion due to after flame should not exceed 60 seconds.
(2) The display flag shall not burn more than 25%.
(3) The bottom cotton is not burned by falling objects.
○: satisfying all of the above (1) to (3) ×: not satisfying any of the following (1) to (3)
(テープ高さ)
それぞれのテープ高さhを測定した。
◎:360μm未満、○:360μm以上400μm未満、×:400μm以上
なお、テープ高さhは400μm未満だと実用上問題がない。
(Tape height)
Each tape height h was measured.
A: Less than 360 μm, O: 360 μm or more and less than 400 μm, ×: 400 μm or more Note that there is no practical problem when the tape height h is less than 400 μm.
結果を表2に示す。 The results are shown in Table 2.
(評価結果)
表2から明らかなように、実施例1および実施例2では識別性、難燃性、テープ高さいずれも実用上問題ない。
これに対して、比較例1では、上面が低難燃性樹脂(B)のみで被覆されているので難燃性に実用上問題があった。
また、比較例2では、すり切り状態でない高難燃性樹脂(A)にさらに低難燃性樹脂(B)が設けられているのでテープ高さに実用上問題があった。
以上のように本発明によれば、表裏を容易に識別でき、一定の難燃性を有し、薄くて配線作業に適した光ファイバテープ心線およびその製造方法を提供することができる。
(Evaluation results)
As is clear from Table 2, in Examples 1 and 2, there are no practical problems in terms of discrimination, flame retardancy, and tape height.
On the other hand, in the comparative example 1, since the upper surface was coat | covered only with the low flame retardant resin (B), there existed a problem practically in the flame retardance.
Moreover, in Comparative Example 2, since the low flame retardant resin (B) was further provided on the high flame retardant resin (A) that was not worn, there was a practical problem with the tape height.
As described above, according to the present invention, it is possible to provide an optical fiber ribbon that can easily identify the front and back, has a certain flame retardancy, is thin and suitable for wiring work, and a method for manufacturing the same.
20 高難燃性樹脂(A)
30 低難燃性樹脂(B)
40 高難燃性樹脂(C)
F 光ファイバ素線
T1、T2、Ta、Tb 光ファイバテープ心線
d 光ファイバ素線Fの外径
h テープ高さ
w テープ幅
20 Highly flame retardant resin (A)
30 Low flame retardant resin (B)
40 Highly flame retardant resin (C)
F Optical fiber strands T1, T2, Ta, Tb Optical fiber tape core d Outer diameter h of optical fiber strand F Tape height w Tape width
Claims (4)
一方の表面はUL94V−1規格を満たす高難燃性樹脂(A)で被覆され、
他方の表面はUL94HB規格を満たす低難燃性樹脂(B)で被覆され、
前記高難燃性樹脂(A)と前記低難燃性樹脂(B)は異なる色を有し、
前記低難燃性樹脂(B)はUL94V−1規格を満たす高難燃性樹脂(C)を介して設けられており、
前記高難燃性樹脂(C)は、光ファイバ素線間の間隙を埋めるようにすり切り状態に形成されており、前記高難燃性樹脂(A)と前記高難燃性樹脂(C)は、同一の樹脂であることを特徴とする光ファイバテープ心線。 An optical fiber ribbon in which the upper and lower surfaces of a plurality of parallel optical fibers are coated with a flame retardant resin,
One surface is coated with a highly flame retardant resin (A) that meets the UL94V-1 standard ,
The other surface is coated with a low flame retardant resin (B) that meets the UL94HB standard ,
The high flame retardant resin (A) and the low flame retardant resin (B) have different colors,
The low flame retardant resin (B) is provided via a high flame retardant resin (C) that satisfies the UL94V-1 standard ,
The high flame retardant resin (C) is formed in a ground state so as to fill a gap between the optical fiber strands, and the high flame retardant resin (A) and the high flame retardant resin (C) are An optical fiber ribbon made of the same resin .
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