Abstract: A composite electric cable including a plurality of element wires twisted together. The element wires include a material wire formed of a composite material containing an aluminum material and carbon nanotubes dispersed in the aluminum material; the material wire has a cellulation structure including a wall portion containing the carbon nanotubes and an inside portion of the wall which is surrounded by the wall portion and which comprises the aluminum material and unavoidable impurities; the material wire has a ratio of carbon nanotube content to aluminum material content of 0.2 wt. % to 5 wt. %; and each of all the element wires forming the composite electric cable is the material wire, or the composite electric cable includes in a center portion thereof one or a plurality of steel wires.

Abstract: A shielded cable is mainly configured by an electromagnetic shielding tube, a terminal, and an electric wire or the like. An electric wire is inserted into an inside of the electromagnetic shielding tube. The terminal is connected to both end portions of the electric wire that serves as a covered wire. In the present invention, a structure in which the terminal is connected to the electric wire is called a structure of a shielded cable. The electromagnetic shielding tube is configured by an inner layer made of plastic, a metal layer made of metal, and an outer layer made of plastic. The electromagnetic shielding tube is configured such that the inner layer is formed on an innermost layer, the outer layer is formed on an outermost layer, and the metal layer is formed between the inner layer and the outer layer.

Abstract: A power line core in an undersea cable includes a conducting member, an insulating member, a shield layer, a water shielding layer, an anticorrosion layer and the like. The insulating member is provided on an outer periphery portion of the conducting member. The insulating member is made of, for example, crosslinked polyethylene. The shield layer is provided on an outer periphery of the insulating member. The water shielding layer is provided on an outer periphery portion of the shield layer. The water shielding layer includes a multilayer tape in which a metal layer is sandwiched by resin layers. The anticorrosion layer is provided on an outer periphery portion of the water shielding layer. In the cross section of the multilayer tape, the metal layer has a corrugated shape.

Abstract: A power line core in an undersea cable includes a conducting member, an insulating member, a shield layer, a water shielding layer, an anticorrosion layer and the like. The insulating member is provided on an outer periphery portion of the conducting member. The insulating member is made of, for example, crosslinked polyethylene. The shield layer is provided on an outer periphery of the insulating member. The water shielding layer is provided on an outer periphery portion of the shield layer. The water shielding layer includes a multilayer tape in which a metal layer is sandwiched by resin layers. The anticorrosion layer is provided on an outer periphery portion of the water shielding layer. In the cross section of the multilayer tape, the metal layer has a corrugated shape.

Abstract: A shielded cable is mainly configured by an electromagnetic shielding tube, a terminal, and an electric wire or the like. An electric wire is inserted into an inside of the electromagnetic shielding tube. The terminal is connected to both end portions of the electric wire that serves as a covered wire. In the present invention, a structure in which the terminal is connected to the electric wire is called a structure of a shielded cable. The electromagnetic shielding tube is configured by an inner layer made of plastic, a metal layer made of metal, and an outer layer made of plastic. The electromagnetic shielding tube is configured such that the inner layer is formed on an innermost layer, the outer layer is formed on an outermost layer, and the metal layer is formed between the inner layer and the outer layer.

Abstract: A composite electric cable including a plurality of element wires twisted together. The element wires include a material wire formed of a composite material containing an aluminum material and carbon nanotubes dispersed in the aluminum material; the material wire has a cellulation structure including a wall portion containing the carbon nanotubes and an inside portion of the wall which is surrounded by the wall portion and which comprises the aluminum material and unavoidable impurities; the material wire has a ratio of carbon nanotube content to aluminum material content of 0.2 wt. % to 5 wt. %; and each of all the element wires forming the composite electric cable is the material wire, or the composite electric cable includes in a center portion thereof one or a plurality of steel wires.