An insulated wire includes a conductor having an elongated shape and an insulating coating. The insulating coating is provided around the conductor. The insulating coating is formed by laminating multiple insulating layers, each of which includes pores.

An insulated wire, containing: a conductor having a rectangular cross-section; and an insulating coated film having at least two insulating layers laminated together on the conductor,
wherein the laminated insulating coated film is composed of: an enamel insulating layer formed from a thermosetting resin on the outer periphery of the conductor, and an extruded insulating layer formed from a thermoplastic resin on the outer side of the enamel insulating layer,
wherein the thickness of the enamel insulating layer is 50 m or more, and wherein the total thickness (T) and the relative permittivity () at 100 C. of the laminated insulating coated film; and the maximum thickness (Tmax), and the maximum value (max) and the minimum value (min) of the relative permittivity at 100 C. of one layer among the laminated insulating layers; satisfy all of the following relations:
T100 m(1.1)
Tmax100 m(1.2)
1.53.5(2.1)
1.0max/min1.2(2.2) a coil; and an electrical or electronic equipment.

Disclosed herein is an apparatus for applying a coating material to a wire, the apparatus comprising: a coating chamber for applying a thermosetting coating material to a wire passing through the coating chamber; an elongate injection channel for receiving coating material input to the coating apparatus at a first end of the injection channel and supplying the received coating material to the coating chamber that is arranged at a second end of the injection channel; and, a number of heating elements controllable to progressively raise the temperature of the coating material as the coating material flows through the coating apparatus to achieve a desired viscosity of the coating material within the coating chamber. Advantages include providing an industrial process for applying a coating to a wire that is easier, safer and cheaper than known solvent based techniques.

The present invention relates to a wire coating composition comprising an infrared radiation sensitive compound resulting in the conversion of absorbed light energy into heat and a matrix with a varnish that responses either chemically or physically upon treatment with heat, to a method of producing an enameled wire and to the use thereof.

The present invention relates to a solvent-free wire enamel composition containing extrudable, polyesterimide-containing binders, prepared from polyols, polycarboxylic acids, imide-forming components, and structural elements which are crosslinkable after extrusion.

An insulated wire, having: an insulating layer on the outer periphery of a conductor having a rectangular cross-section; an adhesive layer on the outer periphery of the insulating layer; and an insulating paper on the outer periphery of the adhesive layer, wherein the adhesive layer has a thickness of 2 to 50 m, and wherein a resin constituting the adhesive layer does not have a melting point and has a tensile modulus at 250 C. of 0.910.sup.7 to 1.210.sup.8 Pa; a coil, comprised of this insulated wire; and an electrical or electronic equipment.

An insulated wire, having at least one thermosetting resin layer and at least one thermoplastic resin layer in this order, as covering layers, on a conductor having a quadrilateral cross-section, wherein, in a coating thickness of the covering layers, in each side to be formed on 4 sides of the quadrilateral cross-section of said insulated wire, a difference between the maximum value and the minimum value is each 20 m or less, and a value of the maximum value divided by the minimum value of the whole sides is 1.3 or more; a motor coil; and an electrical or electronic equipment.

An inverter surge-resistant insulated wire comprising a conductor and an enamel resin-insulating laminate that has a foamed region including cells and a non-foamed region including no cells on at least one surface of the foamed region on the conductor, wherein the foamed region is configured such that a non-cell layer including no cells has cell layers formed of closed cells on both surface sides of the non-cell layer, a thickness of the non-cell layer is larger than a thickness of a partition wall among the closed cells, and 5 to 60% of a thickness of the foamed region, and at least 10 the cell layer in the foamed region is formed of a thermosetting resin; an inverter surge-resistant insulated wire having a conductor and the enamel resin-insulating laminate; and electric/electronic equipment.

A microfabricated laminated conductor, comprising at least two flat metallic conductors held together parallel by their edges by a first dielectric material anchor, such that there exists a gap of between several nanometers and several micrometers between most of the at least two flat metallic conductors.

A rectangular wire having: a multilayer conductor member constructed by stacking, in a thickness direction, a rectangular metallic conductor that has a layer of a first thermoplastic resin formed on the outer periphery thereof, the first thermoplastic resin being a non-crystalline resin having no melting point or a crystalline resin having an amide bond; and a layer of a second thermoplastic resin having a melting point of 300 C. or more on the outer periphery of the multilayer conductor member.