The present invention relates to a method for manufacturing a cable comprising at least one elongate electrically conductive element, at least one composite layer surrounding the elongate electrically conductive element, the composite layer comprising a non-woven fibrous material impregnated by a geopolymer material, and at least one polymer sleeve surrounding the composite layer, the method using a tube of plastic material to facilitate the extrusion of the polymer sleeve around the composite layer.

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.

This disclosure describes co-extruded multilayer articles including at least one continuous layer and one discontinuous layer, as well as systems and techniques for the manufacture of co-extruded multilayer articles. For example, a co-extruded multilayer article is described that includes a body having a plurality of layers, where a first layer of the plurality of layers is formed from a first material and is continuous along a longitudinal axis of the body, and a second layer of the plurality of layers is formed from a second material and is discontinuously co-extruded along the longitudinal axis.

A method can include extruding polyethylene about a lead (Pb) barrier layer disposed about a conductor to form an assembly; and armoring at least one of the assemblies with metallic armor to form a cable. A power cable can include a conductor; a lead (Pb) barrier layer disposed about the conductor; a cushion layer disposed about the lead (Pb) barrier layer where the cushion layer includes crosslinked polyethylene (XLPE); and metallic armor wrapped about the cushion layer.

A method can include extruding polyethylene about a lead (Pb) barrier layer disposed about a conductor to form an assembly; and armoring at least one of the assemblies with metallic armor to form a cable. A power cable can include a conductor; a lead (Pb) barrier layer disposed about the conductor; a cushion layer disposed about the lead (Pb) barrier layer where the cushion layer includes crosslinked polyethylene (XLPE); and metallic armor wrapped about the cushion layer.

A method of producing a heat-resistant crosslinked fluororubber formed body, including a step (1) of melt-mixing, with respect to 100 mass parts of base rubber containing 40 to 98 mass % of fluororubber and 2 to 40 mass % of ethylene/tetrafluoroethylene copolymer resin, 0.003 to 0.5 mass parts of organic peroxide, 0.5 to 400 mass parts of inorganic filler, 2 to 15 mass parts of a specific silane coupling agent, and silanol condensation catalyst, and including a step (a) of melt-mixing a part of the base rubber, the organic peroxide, the inorganic filler and the silane coupling agent at a temperature equal to or higher than a decomposition temperature of said organic peroxide, and a step (b) of melt-mixing a remainder of the base rubber, and the silanol condensation catalyst, and the fluororubber and the ethylene/tetrafluoroethylene copolymer resin are melt-mixed in any of the steps (a) and (b).

Magnet wire including extruded insulation formed from multiple layers of different materials is described. A magnet wire may include a conductor and insulation formed around the conductor. The insulation may include a first layer of extruded thermoplastic insulation formed around the conductor and a second layer of extruded thermoplastic insulation formed around the first layer of extruded thermoplastic insulation. The first layer may be formed from a first polymeric material having a first thermal index, and the second layer may be formed from a second polymeric material having a second thermal index higher than the first thermal index.

A coated wire suitable for aerospace applications includes a metallic conductor elongated along an axis and having an outer surface extending along the axis, and three coating layers surrounding the conductor. A first coating layer is connected to the outer surface of the conductor and extends along the axis to surround the conductor, and the first coating layer is formed of ethene-tetrafluoroethene. A second coating layer is connected to the first coating layer and extends along the axis to surround the first coating layer, and the second coating layer is formed of polyaryletherketone. A third coating layer is connected to the second coating layer and extends along the axis to surround the third coating layer, wherein the third coating layer is formed of ethene-tetrafluoroethene. The three coating layers may each be continuous and seamless extruded layers in one configuration.

A tank including a fluid reservoir, a communication module, a controller, and at least one sensor. The fluid reservoir is configured to be in fluid communication with a cable segment. The communication module is configured to communicate with an external device. The sensor is configured to detect an injection parameter value, encode the injection parameter value in a sensor signal, and send the sensor signal to the controller. The controller is configured to automatically instruct the communication module to transmit information to the external device based on the injection parameter value.

An opto-electrical cable may include an opto-electrical cable core and a polymer layer surrounding the opto-electrical cable core. The opto-electrical cable core may include a wire, one or more channels extending longitudinally along the wire, and one or more optical fibers extending within each channel. The opto-electrical cable may be made by a method that includes providing a wire having a channel, providing optical fibers within the channel to form an opto-electrical cable core, and applying a polymer layer around the opto-electrical cable core. A multi-component cable may include one or more electrical conductor cables and one or more opto-electrical cables arranged in a coax, triad, quad configuration, or hepta configuration. Deformable polymer may surround the opto-electrical cables and electrical conductor cables.