Sumitomo Electric Industries, Limited

Sumitomo Wiring Systems, Limited

Jo Yagisawa

Takumi Ooshima

Shigeyuki Tanaka

Taro Fujita

Yutaka Matsumura

Masayuki Ishikawa

Takaya Kohori

Hiroshi Hayami

Kiyoaki Moriuchi

Kenta Kobayashi

Satoshi Yamasaki

Hirotaka Kato

An electrically insulated cable comprising: a core electric wire; a tape member covering the core electric wire; and a covering layer covering the tape member; wherein: the core electric wire includes a plurality of insulated electric wires; the insulated electric wires each include a conductor and an insulating layer covering the conductor; and the tape member has a minimum value of transmittance of 70% or more with respect to light having a wavelength of no less than 400 nm and no more than 800 nm.

Electrically insulated cable

A multi-core cable includes two power wires, and a twisted pair signal wire having two twisted signal wires. The power wires and the twisted pair signal wire are twisted together to form a core, and the power wires include a first conductor, and a first insulating layer covering the first conductor. The signal wires include a second conductor, and a second insulating layer covering the second conductor, and a Young's modulus of the second insulating layer is greater than or equal to 700 MPa and less than or equal to 1600 M Pa.

Multi-core cable

An electrically insulated cable including: a core electric wire; and a covering layer covering the core electric wire; wherein: the core electric wire includes a plurality of insulated wires; the insulated wires each include a conductor and an insulating layer covering the conductor; and the covering layer contains a crosslinked polyethylene-based resin and a flame retardant in the front surface side thereof.

A multicore cable includes power lines, and an outer jacket covering the power lines. The power lines include one first conductor disposed at a center, and second conductors disposed on an outer periphery of the first conductor, that are twisted together. Each of the first and second conductors includes 10 or more and 100 or less twisted second element wires. A direction of lay of the first element wires of the first conductor, a direction of lay of the second element wires of the second conductor, and a direction of lay of the first conductor and the second conductors of the power line are the same. A length of lay of the first element wires and a length of lay of the second element wires are greater than or equal to 8 mm and less than or equal to 22 mm.

Multicore cable

A core electric wire for a multicore cable. The core electric wire includes a conductor composed of a plurality of elemental wires twisted together and an insulating layer coating a circumference of the conductor. The insulating layer includes 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 has a content ratio of 10% by mass or more and 60% by mass or less to a total content of the polyethylene-based resin, and the second component has a content ratio of 20% by mass or more and 80% by mass or less to the total content of the polyethylene-based resin.

Core electric wire for multicore cable, and multicore cable

A multicore cable includes a plurality of covered wires having a lubricant powder provided on surfaces thereof, and an outer sheath layer covering outer surfaces of the plurality of covered wires. The outer surfaces of the plurality of covered wires, and the outer sheath layer, make contact with one another via the lubricant powder. A coverage of the outer surfaces of the plurality of covered wires by the lubricant powder is greater than or equal to 15%.

A composite cable includes an electric wire bundle, and an outer layer sheath covering the electric wire bundle. The electric wire bundle includes a one-core first electric wire, a one-core second electric wire, a two-core twisted pair electric wire, a one-core third electric wire, and one wire-like interposed material formed in the shape of a wire using a polymer. In the electric wire bundle, in a cross sectional view the twisted pair electric wire is disposed on one side of a centerline joining the center of the first electric wire and the center of the second electric wire, and the third electric wire and the wire-like interposed material are disposed on the other side of the centerline.

Composite cable

A flame-retardant resin composition including a resin component containing (A) 30 to 90 parts by weight of a thermoplastic polyurethane elastomer having, as measured according to JIS K 7311, a JIS hardness of A98 or less, (B) 70 to 10 parts by weight of an ethylene-vinyl acetate copolymer having a vinyl acetate unit content of 50 to 90% by weight, (C) 0 to 40 parts by weight of at least one polymer selected from the following copolymers (C1) to (C3), (C1) an acid anhydride-modified ethylene-unsaturated carboxylic acid derivative copolymer, (C2) an epoxy group-having ethylene-olefin copolymer, and (C3) an acid anhydride-modified styrene elastomer, and provided that the total amount of components (A), (B) and (C) is 100 parts by weight, (D) a metal hydroxide in a ratio of 40 to 250 parts by weight with respect to the total amount of 100 parts by weight of the resin component containing (A), (B) and (C).

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Tochigi, Japan

Jo Yagisawa