Title:
CORE WIRE FOR MULTI-CORE CABLES AND MULTI-CORE CABLE
Document Type and Number:
WIPO Patent Application WO/2017/056279
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a core wire for multi-core cables, having excellent bending resistance at low temperatures; and a multi-core cable using same. This core wire for multi-core cables comprises: a conductor having a plurality of strands that have been wound together; and an insulating layer covering the outer circumference of this conductor. The main component of the insulating layer is a copolymer of ethylene and an α olefin having a carbonyl group. The copolymer contains 14%-46% by mass of the α olefin having the carbonyl group. The sum C × E of the linear expansion coefficient C for the insulating layer from 25°C to -35°C and the elasticity modulus E at -35°C is 0.01-0.9. Ideally, the average area in a cross-section of the conductor is 1.0-3.0 mm2. The average diameter of the plurality of strands in the conductor is 40-100 µm and, ideally, there are 196-2,450 strands.
Inventors:
TANAKA SHIGEYUKI (JP)
NISHIKAWA SHINYA (JP)
OKAWA HIROYUKI (JP)
KOHORI TAKAYA (JP)
MAYAMA YUHEI (JP)
HIRAI TAKAYUKI (JP)
NISHIKAWA SHINYA (JP)
OKAWA HIROYUKI (JP)
KOHORI TAKAYA (JP)
MAYAMA YUHEI (JP)
HIRAI TAKAYUKI (JP)
Application Number:
PCT/JP2015/077881
Publication Date:
April 06, 2017
Filing Date:
September 30, 2015
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
H01B7/17; H01B3/44; H01B7/28; H01B11/00
Foreign References:
| JP2014220043A | 2014-11-20 | |||
| JP2011099084A | 2011-05-19 | |||
| JPS6166740A | 1986-04-05 |
Attorney, Agent or Firm:
AMANO Kazunori (JP)
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