OPTICAL FIBER CABLE
To provide an optical fiber cable efficiently exhibiting high flame retardancy.SOLUTION: An optical fiber cable 1 is constituted of a core part 15, a press-wrapping member 7, tension members 9, tear strings 11a, a sheath 13, a flame-retardant sheet 17 and the like. The core part 15 is composed of a...
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Main Authors | , , |
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Format | Patent |
Language | English Japanese |
Published |
07.12.2023
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Subjects | |
Online Access | Get full text |
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Summary: | To provide an optical fiber cable efficiently exhibiting high flame retardancy.SOLUTION: An optical fiber cable 1 is constituted of a core part 15, a press-wrapping member 7, tension members 9, tear strings 11a, a sheath 13, a flame-retardant sheet 17 and the like. The core part 15 is composed of a plurality of coated optical fibers 3. The press-wrapping member 7 is disposed on an outer periphery of the core part 15. The outer periphery of the core part 15 (press-wrapping member 7) is covered by the resin-made sheath 13. The sheath 13 has an inner layer 13a disposed on an outer peripheral side of the core part 15 (press-wrapping member 7) and an outer layer 13b exposed on an outer surface of the optical fiber cable 1. That is, the sheath 13 has an at least two-layer structure and the flame-retardant sheet 17 is disposed between the inner layer 13a and the outer layer 13b.SELECTED DRAWING: Figure 1
【課題】 効率よく難燃性の高い光ファイバケーブルを提供する。【解決手段】 光ファイバケーブル1は、コア部15、押さえ巻き部材7、テンションメンバ9、引き裂き紐11a、外被13、難燃シート17等により構成される。コア部15は、複数の光ファイバ心線3からなる。コア部15の外周には、押さえ巻き部材7が配置される。コア部15(押さえ巻き部材7)の外周は、樹脂製の外被13によって被覆される。ここで、外被13は、コア部15(押さえ巻き部材7)の外周側に配置される内層13aと、光ファイバケーブル1の外面に露出する外層13bとを有する。すなわち、外被13は、少なくとも2層構造であり、内層13aと外層13bとの間には、難燃シート17が配置される。【選択図】図1 |
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Bibliography: | Application Number: JP20220085014 |