US 12,073,963 B2
Core electric wire for multicore cable, and multicore cable
Yutaka Matsumura, Osaka (JP); Shigeyuki Tanaka, Osaka (JP); Taro Fujita, Osaka (JP); Takaya Kohori, Kanuma (JP); Takumi Ooshima, Kanuma (JP); and Jo Yagisawa, Kanuma (JP)
Assigned to SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
Appl. No. 17/615,129
Filed by SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
PCT Filed Jun. 1, 2020, PCT No. PCT/JP2020/021671
§ 371(c)(1), (2) Date Nov. 30, 2021,
PCT Pub. No. WO2020/246442, PCT Pub. Date Dec. 10, 2020.
Claims priority of application No. 2019-103449 (JP), filed on Jun. 3, 2019.
Prior Publication US 2022/0238253 A1, Jul. 28, 2022
Int. Cl. H01B 7/02 (2006.01); C09D 5/18 (2006.01); C09D 123/06 (2006.01); C09D 123/08 (2006.01); H01B 3/44 (2006.01); H01B 7/00 (2006.01); H01B 7/295 (2006.01)
CPC H01B 7/0009 (2013.01) [C09D 5/18 (2013.01); C09D 123/06 (2013.01); C09D 123/0869 (2013.01); H01B 3/441 (2013.01); H01B 7/295 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A core electric wire for a multicore cable that comprises a conductor composed of a plurality of elemental wires twisted together and an insulating layer coating a circumference of the conductor,
the insulating layer including a polyethylene-based resin including a first component and a second component,
the first component being high density polyethylene,
the second component being at least one selected from the group consisting of a copolymer of ethylene and an α-olefin having a carbonyl group, and very-low density polyethylene,
the first component having a content ratio of 10% by mass or more and 60% by mass or less to a total content of the polyethylene-based resin,
the second component having a content ratio of 30% by mass or more and 80% by mass or less to the total content of the polyethylene-based resin.