Core wire for multi-core cables and multi-core cable
AssigneeSumitomo Electric Industries, Ltd.
InventorsYutaka MATSUMURA, Shigeyuki TANAKA, Taro FUJITA, Takaya KOHORI, Masayuki ISHIKAWA
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Abstract
A core wire for multi-core cables includes a conductor obtained by twisting a plurality of elemental wires, and an insulating layer coated on an outer peripheral surface of the conductor. The insulating layer contains polyethylene-based resin as a main component, and the product of a linear expansion coefficient C1 of the insulating layer in the range of 25° C. to −35° C. and an elastic modulus E1 at −35° C., namely (C1×E1) is 0.01 MPaK−1 or more and 0.90 MPaK−1 or less. The melting point of the polyethylene-based resin is 80° C. or higher and 130° C. or lower.
Claims8
A core wire for multi-core cables comprising:
- a conductor obtained by twisting a plurality of elemental wires;
- and
- an insulating layer coated on an outer peripheral surface of the conductor,
- the insulating layer containing polyethylene-based resin as a main component,
- the product of a linear expansion coefficient C1 of the insulating layer in a range of 25° C. to −35° C. and an elastic modulus E1 at −35° C., namely (C1×E1) being 0.01 MPaK−1 or more and 0.90 MPaK−1 or less, and
- the melting point of the polyethylene-based resin being 80° C. or higher and 130° C. or lower.
Dependencies are inferred from the claim text.