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Split type optical fiber core

An optical fiber ribbon and split-type technology, applied in the field of split-type optical fiber ribbon core wires and their manufacturing, can solve the problems of cracking and difficult splitting of the connecting resin, and achieve the effect of excellent splitting.

Inactive Publication Date: 2003-11-26
SUMITOMO ELECTRIC IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, if the connecting resin is stretched too much, it is difficult to break the connecting resin and it is difficult to divide it.

Method used

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  • Split type optical fiber core
  • Split type optical fiber core
  • Split type optical fiber core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] In the following order, use the figure 2 The apparatus shown produces a split-type optical fiber ribbon as shown in FIG. 1 . In the following examples, the curing of the ultraviolet curable resin composition was carried out under two conditions of high linear velocity (800 m / min) and low linear velocity (600 m / min).

[0071] (optical fiber core wire)

[0072] As the optical fiber core wire, an optical fiber colored core wire (outer diameter of 255 μm) can be used. The core wire is a single-mode glass optical fiber with an outer diameter of 125 μm coated twice with urethane acrylate resin, and then coated with a colorant. Formed by coating with urethane acrylate resin.

[0073] (Manufacturing of optical fiber ribbon core wire)

[0074] Arrange 4 above-mentioned optical fiber ribbons side by side, and coat the ultraviolet curable resin composition A having the following components on their periphery:

[0075] Urethane acrylic resin obtained by reacting 1 mol of diol a...

Embodiment 2

[0105] In addition to having the composition shown below:

[0106] Polytetramethylene glycol 1mol, the urethane acrylic resin obtained by the reaction of toluene diisocyanate 2mol and hydroxyethyl acrylate 2mol: 20 parts by weight

[0107] Lauryl acrylate; 15 parts by weight

[0108] Bisphenol A epoxy diacrylate: 45 parts by weight

[0109] Nonylphenyl acrylate added with ethylene oxide: 15 parts by weight

[0110] 2-Methyl-1-[4-(methylthio)phenyl]-2-morpholino-propan-1-one (Irgacure907, manufactured by Chiba Special Chemicals Co., Ltd.): 2 parts by weight

[0111] 2,4,6-trimethylbenzoyldiphenylphosphine oxide (Lucilin TPO, manufactured by BASF): 3 parts by weight

[0112] A split-type optical fiber ribbon having the structure shown in FIG. 1 was produced in the same manner as in Example 1 except that the ultraviolet-curable resin composition C was used instead of the ultraviolet-curable resin composition B. In the ultraviolet curable resin composition C, the concentration...

Embodiment 3

[0129] In a nitrogen atmosphere, the ultraviolet curable resin composition A was coated on the support, and the UV curable resin composition A was irradiated with ultraviolet light (irradiation light amount: 100mJ / cm 2 ) was irradiated to make it solidify, and a thin film with a film thickness of 100 μm was produced, and its Young's modulus was measured. The results obtained are shown in Table 1. In addition, the measured Young's modulus and the 500mJ / cm 2 The ratio of the Young's modulus (500mJ ratio) obtained when it is cured by ultraviolet radiation is used as an index of curing speed. When 500mJ is relatively large, it means that the curing speed is fast.

[0130] (curing performance experiment 2)

[0131] Further, the film obtained in curability experiment 1 was extracted with methyl ethyl ketone at 60° C. for 16 hours. And determine the ratio of its gel components. The results obtained are shown in Table 1. The ratio of the gel component is an indicator of the amou...

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Abstract

The separable optical fiber ribbon in accordance with the present invention is an optical fiber ribbon in which a plurality of colored optical fibers arranged in parallel are coated with a collective coating resin so as to be integrated into an optical fiber ribbon, and a plurality of such optical fiber ribbons are arranged in parallel and coated with a binding resin; wherein the binding resin is obtained by curing a UV-curable resin composition satisfying the condition represented by the following expression (1): 1.0x10<-4><=(W.N / 100MW)<=4.0X10<-4> (1) where W is the compounding ratio [wt %] of a urethane acrylate compound contained in the resin composition, N is the number of urethane groups in one molecule of the urethane acrylate compound, and MW is the average molecular weight of the urethane acrylate compound.

Description

technical field [0001] The present invention relates to split type optical fiber ribbon core wire and its manufacturing method. Background technique [0002] Conventionally, in order to increase the density of optical glass fibers (hereinafter referred to as optical fibers) used as optical transmission media and to simplify their handling, split-type optical fiber ribbons are widely used at present. The so-called split-type optical fiber ribbon refers to arranging a plurality of optical fibers side by side and covering them with a coating resin at once to form an integrated optical fiber ribbon, and then the multiple optical fiber ribbons are The core wires are lined up and covered with resin for connection to form an integrated product. Each optical fiber ribbon can be divided by cutting the connecting resin at a predetermined portion. [0003] When manufacturing a split-type optical fiber having the above-mentioned structure, first, a plurality of optical fiber core wire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C25/10C03C25/1065G02B6/44
CPCG02B6/4482G02B6/4404C03C25/1065
Inventor 佐藤登志久服部知之细谷俊史
Owner SUMITOMO ELECTRIC IND LTD
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