Provided is a semiconductive resin composition which may be used for both an internal semiconductive layer and an external semiconductive layer of a power cable, and in particular has excellent peelability to be used for the external semiconductive layer. In addition, a novel semiconductive resin composition having improved thermal resistance and mechanical physical properties, and an improved deterioration property is provided. The semiconductive resin composition for a power cable includes: 20 to 70 parts by weight of any one or two or more conductive particles selected from the group consisting of carbon black, graphite and graphene, based on 100 parts by weight of a composite resin including a polypropylene homopolymer having a melting point of 150 to 170 C. and an ethylene-(meth)acrylate-based resin.

A smooth torque balanced cable that includes an electrically conductive cable core for transmitting electrical power. The smooth torque balanced cable also has a first polymer surrounding said cable core. An inner layer of a plurality of first armor wires surrounds the cable core. The first armor wires being in partial contact with the first polymer and partial contact with a second polymer disposed opposite the first polymer.

A smooth torque balanced cable that includes an electrically conductive cable core for transmitting electrical power. The smooth torque balanced cable also has a first polymer surrounding said cable core. An inner layer of a plurality of first armor wires surrounds the cable core. The first armor wires being in partial contact with the first polymer and partial contact with a second polymer disposed opposite the first polymer.

A protective member to be wrapped around an electric wire, in which the protective member has a reduced thickness and exerts, at the same time, both functions of protecting and noise-insulating the electric wire. The protective member is used while being wrapped around the electric wire. The protective member includes: a first sheet material made of a nonwoven fabric; and a second sheet material that is made of a woven fabric, a nonwoven fabric in which fibers longer than fibers of the nonwoven fabric of the first sheet material are joined to each other, or a nonwoven fabric that includes a larger number of joining points at which fibers are intertwined than that of the nonwoven fabric of the first sheet material, the second sheet material being laid on the first sheet material to form one main surface of the protective member.

A method of manufacturing a jacketed metal line is detailed herein. The method of manufacturing a jacketed metal line can include roughening an outer surface of a metal core of the line. An insulating polymer layer can be applied to the metal core, and the insulating polymer layer can include a reinforcing additive comprising: graphite, carbon, glass, aramid, short-fiber filled PolyEtherEtherKetone, mircron-sized polytetrafluoroethylene, or combinations thereof. The roughened metal core can then be exposed a heat source for at least partially melting the polymer layer; and the partially melted polymer layer and insulated roughened metal core can be ran through a set of shaping rollers.

A method of manufacturing a jacketed metal line is detailed herein. The method of manufacturing a jacketed metal line can include roughening an outer surface of a metal core of the line. An insulating polymer layer can be applied to the metal core, and the insulating polymer layer can include a reinforcing additive comprising: graphite, carbon, glass, aramid, short-fiber filled PolyEtherEtherKetone, mircron-sized polytetrafluoroethylene, or combinations thereof. The roughened metal core can then be exposed a heat source for at least partially melting the polymer layer; and the partially melted polymer layer and insulated roughened metal core can be ran through a set of shaping rollers.

Thermoplastic molding compositions containing A) from 29 to 99.99% by weight of a polyester, B) from 0.01 to 3.0% by weight of an alkali metal salt of nitrous acid or of phosphoric acid or of carbonic acid, or a mixture of these, based on 100% by weight of A) and B), and C) from 0 to 70% by weight of further additives, where the sum of the % by weight values for A) to C) is 100%. The compositions are used in the production of cable sheathing or optical waveguide sheathing via blowmolding, profile extrusion, and/or tube extrusion.

Thermoplastic molding compositions containing A) from 29 to 99.99% by weight of a polyester, B) from 0.01 to 3.0% by weight of an alkali metal salt of nitrous acid or of phosphoric acid or of carbonic acid, or a mixture of these, based on 100% by weight of A) and B), and C) from 0 to 70% by weight of further additives, where the sum of the % by weight values for A) to C) is 100%. The compositions are used in the production of cable sheathing or optical waveguide sheathing via blowmolding, profile extrusion, and/or tube extrusion.

Disclosed are cable types, including a type THHN cable, the cable types having a reduced surface coefficient of friction, and the method of manufacture thereof, in which the central conductor core and insulating layer are surrounded by a material containing nylon or thermosetting resin. A silicone based pulling lubricant for said cable, or alternatively, erucamide or stearyl erucamide for small cable gauge wire, is incorporated, by alternate methods, with the resin material from which the outer sheath is extruded, and is effective to reduce the required pulling force between the formed cable and a conduit during installation.

Disclosed are cable types, including a type THHN cable, the cable types having a reduced surface coefficient of friction, and the method of manufacture thereof, in which the central conductor core and insulating layer are surrounded by a material containing nylon or thermosetting resin. A silicone based pulling lubricant for said cable, or alternatively, erucamide or stearyl erucamide for small cable gauge wire, is incorporated, by alternate methods, with the resin material from which the outer sheath is extruded, and is effective to reduce the required pulling force between the formed cable and a conduit during installation.