JPS5632107A - Fiber unit for optical cable - Google Patents

Fiber unit for optical cable

Info

Publication number
JPS5632107A
JPS5632107A JP10714379A JP10714379A JPS5632107A JP S5632107 A JPS5632107 A JP S5632107A JP 10714379 A JP10714379 A JP 10714379A JP 10714379 A JP10714379 A JP 10714379A JP S5632107 A JPS5632107 A JP S5632107A
Authority
JP
Japan
Prior art keywords
fiber unit
optical fiber
sheath
synthetic resin
metal film
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
Application number
JP10714379A
Other languages
Japanese (ja)
Inventor
Tetsusaburo Kamibayashi
Chuichi Oota
Yoshihisa Komazawa
Hidenori Mimura
Fujio Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kokusai Denshin Denwa KK filed Critical Kokusai Denshin Denwa KK
Priority to JP10714379A priority Critical patent/JPS5632107A/en
Priority to GB8027448A priority patent/GB2060929B/en
Publication of JPS5632107A publication Critical patent/JPS5632107A/en
Pending legal-status Critical Current

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  • Insulated Conductors (AREA)

Abstract

PURPOSE: To decrease the penetration of water into optical fibers and reduce the effect of the time when the cable breaks, in the titled fiber unit, by forming a watertight metal film on the synthetic resin layers containing optical fiber strands therein.
CONSTITUTION: A fiber unit 5 disposed within the optical cable is composed of synthetic resin layers 12, 13, etc. of silicon rubber, etc. covering optical fiber strands 1. A watertight metal film layer 14 of copper or silver is formed on the synthetic resin layers 12, 13 of this optical fiber unit 5, preferably by electroless plating, and if necessary, electroplating is further applied thereon to required thickness, on which a sheath 15 such as nylon is applied. A plurality of the obtained fiber strands are bundled by a sheath 9, whereby the optical fiber unit 5 is formed. Thereby, the moisture penetrating through the sheath of the cable is blocked with the metal film layer 14.
COPYRIGHT: (C)1981,JPO&Japio
JP10714379A 1979-08-24 1979-08-24 Fiber unit for optical cable Pending JPS5632107A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP10714379A JPS5632107A (en) 1979-08-24 1979-08-24 Fiber unit for optical cable
GB8027448A GB2060929B (en) 1979-08-24 1980-08-22 Optical fibre unit for an optical cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10714379A JPS5632107A (en) 1979-08-24 1979-08-24 Fiber unit for optical cable

Publications (1)

Publication Number Publication Date
JPS5632107A true JPS5632107A (en) 1981-04-01

Family

ID=14451596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10714379A Pending JPS5632107A (en) 1979-08-24 1979-08-24 Fiber unit for optical cable

Country Status (1)

Country Link
JP (1) JPS5632107A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS581139A (en) * 1981-06-25 1983-01-06 Konishiroku Photo Ind Co Ltd Photosensitive silver halide material
JPH05294055A (en) * 1991-10-31 1993-11-09 Ricoh Co Ltd Method for winding raw paper around plate cylinder in rotary mimeographic press

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS581139A (en) * 1981-06-25 1983-01-06 Konishiroku Photo Ind Co Ltd Photosensitive silver halide material
JPH05294055A (en) * 1991-10-31 1993-11-09 Ricoh Co Ltd Method for winding raw paper around plate cylinder in rotary mimeographic press

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