Abstract

This insulated electric wire comprises: a conductor; a first insulating layer covering the conductor; and a second insulating layer covering the first insulating layer. The first insulating layer has: a resin matrix primarily comprising polyimide; and a plurality of holes. The second insulating layer has: a resin matrix primarily comprising polyimide; and silica particles. The ratio of the average thickness of the first insulating layer to the total of the average thickness of the first insulating layer and the average thickness of the second insulating layer is between 50% and 95%, inclusive. The porosity of the first insulating layer is between 25% and 60% by volume, inclusive. The silica particles are surface-treated with dimethyldichlorosilane or the like. The silica particle content in the second insulating layer is between 15 parts and 30 parts by mass, inclusive, with respect to 100 parts by mass of the resin matrix. The average primary particle size of the silica particles is between 0.008 μｍ and 0.04 μｍ, inclusive.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation

Abstract

This insulated wire comprises: a conductor; a first insulating layer covering the conductor; and a second insulating layer covering the first insulating layer, wherein the first insulating layer has a resin matrix containing polyimide as a main component and a plurality of voids, and the second insulating layer has a resin matrix containing polyimide as a main component, the plurality of voids having an outer shell containing silicone or silica as a main component.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation

Abstract

An insulated wire production device according to the present disclosure is for applying a varnish for forming an insulating layer to the outer circumferential surface of a linear conductor while running the conductor vertically upward along the longitudinal axis of the conductor, and comprises: a varnish tank that stores the varnish; a coating die into which the conductor that has passed through the varnish tank is inserted; and an upper surface member positioned between the varnish tank and the coating die. The upper portion of the varnish tank is closed by the upper surface member. The bottom surface of the varnish tank and the upper surface member have a through-hole through which the conductor penetrates.

IPC Classes  ?

• H01B 13/16 - Insulating conductors or cables by passing through, or dipping in, a liquid bathInsulating conductors or cables by spraying

Abstract

A resin composition according to one aspect contains: a polyimide precursor which is the reaction product of an aromatic tetracarboxylic dianhydride and an aromatic diamine; an organic solvent; and water. The resin composition has a water content of less than 0.5 mass %.

IPC Classes  ?

• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes

Abstract

An insulated wire according to one embodiment of the present disclosure comprises a conductor and an insulating film that covers the conductor. The insulating film has a resin matrix and a plurality of holes. The main component of the resin matrix is a polyimide derived from a polyimide precursor which is a reaction product of an aromatic tetracarboxylic acid dianhydride and an aromatic diamine. The resin matrix contains an aliphatic polyvalent carboxylic acid ester.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation

Abstract

Provided is a resin composition comprising: a polyimide precursor which is a reaction product of an aromatic tetracarboxylic dianhydride with an aromatic diamine; an organic solvent; and an amine compound. The pKa of a conjugate acid of the amine compound is 11 or less, and the molecular weight of the amine compound is 70 or more.

IPC Classes  ?

• C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C08K 5/17 - AminesQuaternary ammonium compounds
• C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 7/02 - Disposition of insulation

Abstract

This varnish for an insulated flat electric wire contains an organic solvent and a polyimide precursor which is a reaction product between an aromatic tetracarboxylic acid dianhydride and an aromatic diamine. The organic solvent contains at least 50 mass% of an amide-based solvent having a boiling point of 150-190°C, and has a viscosity of 5-25 Pa·s at 30°C.

IPC Classes  ?

• H01B 3/40 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes epoxy resins
• C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 7/02 - Disposition of insulation

Abstract

A method for producing a prepolymer solution according to one embodiment of the present disclosure, the method continuously producing a prepolymer solution wherein a prepolymer, which is a precursor of a thermosetting resin, is dissolved in a solvent, comprises a step in which a first starting material, a second starting material that reacts with the first starting material so as to form the prepolymer, and the solvent are mixed with each other.

IPC Classes  ?

• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables

Abstract

This resin composition contains: a polyimide precursor, which is a reaction product of an aromatic tetracarboxylic dianhydride and an aromatic diamine; an organic solvent; a pore-forming agent; and a radical scavenger.

IPC Classes  ?

• C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C08K 5/3435 - Piperidines
• H01B 7/02 - Disposition of insulation

Abstract

A resin composition containing: a polyimide precursor that is a reaction product of an aromatic tetracarboxylic dianhydride and an aromatic diamine; an organic solvent; and an aliphatic polyvalent carboxylic acid ester, wherein the total number of carbon atoms in the aliphatic polyvalent carboxylic acid ester is 9 or more excluding the carbon atom of the carbonyl group.

IPC Classes  ?

• C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C08K 5/11 - EstersEther-esters of acyclic polycarboxylic acids
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes

Abstract

An insulated wire which is equipped with a conductor and a coating for covering the conductor, wherein: said coating comprises an adhering layer which contacts the conductor and an insulating layer which is formed on the adhering layer; the adhering layer comprises a nitrogen-containing organic compound and a first resin; the insulating layer comprises a second resin; the first resin and the second resin each comprise one or more types of polymer selected from the group consisting of a polyimide and a polyamide-imide; and the ratio of the total atomic weight of the nitrogen atoms which constitute the nitrogen-containing organic compound relative to the molecular weight of the nitrogen-containing organic compound is at least 60%.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation

Abstract

A resin composition containing: a polyimide precursor that is a reaction product of an aromatic tetracarboxylic dianhydride and an aromatic diamine; an organic solvent; and a phthalic acid alkyl ester having a boiling point of 290°C or higher.

IPC Classes  ?

• C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes

Abstract

An insulated wire including: a linear conductor; and an insulating layer that covers an outer peripheral surface of the conductor, wherein the insulating layer contains, as residual solvents, a first solvent having a relative permittivity of 15 or more and a second solvent having a relative permittivity of less than 15, a first ratio that is a ratio of a content of the second solvent to a total content of the first solvent and the second solvent contained in the insulating layer is 50% by mass or more, and a second ratio that is a ratio of the content of the second solvent to the total content of the first solvent and the second solvent contained in the insulating layer after a heating treatment of heating the insulated wire at 350° C. for 1 minute is higher than the first ratio.

IPC Classes  ?

• H01B 3/00 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• H01B 17/62 - Insulating-layers or insulating-films on metal bodies

Abstract

The winding bobbin according to an aspect of the present disclosure comprises a cylindrical body part and a brim part disposed at both ends of the body part, and is made of a resin composite containing a main component resin and a glass fiber. The main component resin is polyamide, polycarbonate, or a combination thereof. The bending elastic modulus of the resin composite is 8000 to 18000 MPa. The linear coefficient of expansion of the resin composite is 12 to 25 ppm/℃.

IPC Classes  ?

• B65H 75/14 - Kinds or types of circular or polygonal cross-section with two end flanges
• C08J 5/04 - Reinforcing macromolecular compounds with loose or coherent fibrous material

Abstract

At least a surface of a reel pallet is made of resin. When a distance in a first direction between a reel supported by a first reel support and a reel supported by a second reel support is denoted by La, a distance in the first direction between an outer edge of the reel supported by the second reel support and a fourth side of an arrangement surface is denoted by Lb1, and a distance in the first direction between an end surface of the reel supported by the first reel support and a second side of the arrangement surface is denoted by Lb2, the reel pallet satisfies a relationship of 1

IPC Classes  ?

• B65D 19/44 - Elements or devices for locating articles on platforms
• B65D 19/00 - Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered

Abstract

An insulated wire comprising a conductor and an insulating layer covering the conductor, wherein: the insulating layer comprises a resin and a first filler; the resin comprises a polyimide; the first filler is present in the form of a primary particle or a secondary particle having a plurality of the primary particles aggregated; the primary particle is a silica or alumina particle; the secondary particle has a particle diameter of 0.03 μm or more and 5 μm or less; and the percentage of the total area of the secondary particles to the sum of the total area of the primary particles and the total area of the secondary particles in the cross section of the insulated wire is 50% or more.

IPC Classes  ?

• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables
• H01B 13/06 - Insulating conductors or cables
• C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C08K 3/36 - Silica
• C08K 3/22 - OxidesHydroxides of metals
• C09D 7/61 - Additives non-macromolecular inorganic
• C09D 7/40 - Additives
• C09D 7/20 - Diluents or solvents

Abstract

A method for producing a prepolymer solution according to one embodiment of the present disclosure, the method continuously producing a prepolymer solution wherein a prepolymer, which is a precursor of a thermosetting resin, is dissolved in a solvent, comprises a step in which a first starting material, a second starting material that reacts with the first starting material so as to form the prepolymer, and the solvent are mixed with each other.

IPC Classes  ?

• C08G 73/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen or carbon, not provided for in groups

Abstract

The metal wire heating apparatus according to one embodiment of the present disclosure is provided with a casing which forms a heating chamber for heating a metal wire to be heated, a transfer mechanism which transfers the metal wire to the heating chamber continuously, and a storage tank which is arranged below the heating chamber and in which a cooling solution for cooling the heated metal wire is stored. In the metal wire heating apparatus, the lower end of the casing is positioned below a present liquid level in the storage tank, and the transfer mechanism is so configured that the metal wire is supplied to the heating chamber and is discharged from the heating chamber through the cooling solution in the storage tank.

IPC Classes  ?

• C21D 9/60 - Continuous furnaces for strip or wire with induction heating
• C21D 1/00 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
• C21D 1/26 - Methods of annealing
• C21D 1/74 - Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material

Abstract

An insulated electrical wire according to one aspect of the present disclosure is provided with: a conductor; and an insulating layer covering the conductor. The insulating layer contains a plurality of air holes. Each of the air holes is provided with an outer shell at a peripheral section, said outer shell being derived from the shells of core-shell structured hollowly formed particles. The content ratio of the shell in each of the hollowly formed particles is 15 mass% or less.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation

Abstract

A resin composition includes a phenoxy resin as a principal component. The phenoxy resin has a weight-average molecular weight of 40,000 or more. The phenoxy resin has, in the same or different molecules, a first structural unit derived from bisphenol S phenoxy and a second structural unit derived from a bisphenol epoxy other than the first structural unit. A content ratio of the first structural unit in the phenoxy resin is 20 mol % to 80 mol % relative to a total content of the first structural unit and the second structural unit constituting the phenoxy resin.

IPC Classes  ?

• C08G 75/23 - Polyethersulfones
• C08G 59/24 - Di-epoxy compounds carbocyclic
• C08G 59/40 - Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups characterised by the curing agents used
• C08G 65/40 - Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives derived from phenols from phenols and other compounds
• C08J 9/42 - Impregnation with macromolecular compounds
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• H01F 5/06 - Insulation of windings

Abstract

A resin composition according to one aspect of the present disclosure contains: a polyimide precursor which is the reaction product of an aromatic tetracarboxylic dianhydride and an aromatic diamine; an organic solvent; and water. The resin composition has a water content of less than 0.5 mass%.

IPC Classes  ?

• C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• H01B 7/02 - Disposition of insulation

Abstract

This insulated wire comprises a linear conductor and an insulating layer that coats the outer peripheral surface of the conductor. The insulating layer contains, as residual solvents, a first solvent having a dielectric constant of at least 15 and a second solvent having a dielectric constant of less than 15. A first ratio, which is the ratio of the content of the second solvent to the total content of the first solvent and second solvent contained in the insulating layer, is at least 50 mass%. A second ratio, which is the ratio of the content of the second solvent to the total content of the first solvent and second solvent contained in the insulating layer after the insulated wire has been heat-treated by heating for 1 minute at 350°C, is higher than the first ratio.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• C09D 5/25 - Electrically-insulating paints or lacquers

Abstract

3 is an organic group having 15 or less carbon atoms.

IPC Classes  ?

• C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
• C08J 9/10 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen
• C08J 9/16 - Making expandable particles
• C08J 9/32 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof from compositions containing microballoons, e.g. syntactic foams
• C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors

Abstract

Provided is an insulated wire comprising a conductor and an insulating layer covering the conductor, wherein the insulating layer includes a first resin, the first resin is a polyimide, the glass transition temperature of the polyimide is 230-300°C, the solvent content of the insulating layer is 0-1,000 ppm, and the molecular weight of the solvent is 50-120.

IPC Classes  ?

• C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• H01B 7/02 - Disposition of insulation

Abstract

33 group at an end; and the first filler is composed of silica particles, each having a surface at least a part of which is formed of a silica that has a structure wherein at least one hydroxy group in at least one silanol group is substituted by a methyl group.

IPC Classes  ?

• C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 7/02 - Disposition of insulation
• C08K 3/36 - Silica

IPC Classes  ?

• C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 7/02 - Disposition of insulation
• C08K 3/20 - OxidesHydroxides
• C08K 3/36 - Silica

Abstract

A resin varnish for insulating layer formation that includes a first isocyanate compound, a second isocyanate compound, and a polyamide-imide amine compound, wherein: the first isocyanate compound includes at least one triazine-trione ring structure and a side chain having blocked isocyanate groups at the end bonded to each of the three nitrogens of the triazine-trione ring structure in the molecule; the blocked isocyanate groups are functional groups represented by chemical formula 1; the second isocyanate compound includes at least two terminal chains having the blocked isocyanate groups at the end and at least two urethane structures other than the urethane structures in the blocked isocyanate groups in the molecule; the second isocyanate compound does not include a triazine-trione ring structure in the molecule; and the polyamide-imide amine compound includes at least one amide-imide structure and a structure having at least one amino group bonded to a nitrogen of the amide-imide structure at the end in the molecule. In chemical formula 1, R is an inert group.

IPC Classes  ?

• C09D 5/25 - Electrically-insulating paints or lacquers
• C09D 175/02 - Polyureas
• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• H01B 7/00 - Insulated conductors or cables characterised by their form
• H01B 7/02 - Disposition of insulation

Abstract

Provided is an insulated wire comprising a linear conductor and one or more insulating layers laminated on the outer circumferential surface of the conductor, wherein: at least one of the insulating layers includes a resin matrix; the resin matrix includes a structural unit derived from a first isocyanate compound, a structural unit derived from a second isocyanate compound, and a structural unit derived from a polyamideimide amine compound; the first isocyanate compound includes, in the molecule thereof, at least one triazinetrione ring structure and side chains having a block isocyanate group at an end thereof bonded to each of the three nitrogen atoms of the triazinetrione ring structure; the structural unit derived from the first isocyanate compound is contained at a proportion of 40-80 mass% with respect to the total amount of the structural unit derived from the first isocyanate compound, the structural unit derived from the second isocyanate compound, and the structural unit derived from the polyamideimide amine compound; the second isocyanate compound includes, in the molecule thereof, at least two terminal chains each having the block isocyanate group at an end thereof, and at least two urethane structures other than the urethane structure in the block isocyanate group; the second isocyanate compound does not include, in the molecule thereof, a triazinetrione ring structure; the polyamideimide amine compound includes, in the molecule thereof, at least one amide-imide structure and a structure having, at an end thereof, at least one amino group bonded to a nitrogen atom of the amide-imide structure; and the block isocyanate group is a functional group represented by chemical formula 1. In chemical formula 1, R is a deactivating group.

IPC Classes  ?

• C08G 73/14 - Polyamide-imides
• C09D 5/25 - Electrically-insulating paints or lacquers
• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 7/02 - Disposition of insulation

Abstract

A resin composition according to one aspect of the present invention comprises a phenoxy resin as a main component, wherein the phenoxy resin has a weight-average molecular weight of 40,000 or higher and the phenoxy resin comprises, in the same or different molecules, a first structural unit, which is derived from a bisphenol S type phenoxy, and a second structural unit, which is derived from a bisphenol type epoxy other than the first structural unit, the content of the first structural unit in the phenoxy resin being 20-80 mol% with respect to the sum of the first and second structural units which constitute the phenoxy resin.

IPC Classes  ?

• C08G 65/40 - Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives derived from phenols from phenols and other compounds
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• C08L 71/10 - Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
• H01F 5/00 - Coils
• H01F 5/06 - Insulation of windings

Abstract

An insulated wire includes a linear conductor having a first surface, a second surface facing the first surface, a third surface, and a fourth surface facing the third surface, and an insulation layer covering the conductor; the insulation layer having a first insulation layer in direct contact with the conductor, and one or more upper insulation layers covering the first insulation layer; the first insulation layer has a first cover part covering the first surface, a second cover part covering the second surface, a third cover part covering the third surface, and a fourth cover part covering the fourth surface; and when, in a cross-section perpendicular to the longitudinal direction of the insulated wire, the layer thickness of the first cover part is represented by Ta, the layer thickness of the second cover part is represented by ta, the layer thickness of the third cover part is represented by Tb, and the layer thickness of the fourth cover part is represented by tb, the ratios represented by Ta/ta and Tb/tb are both 1.6 or below.

IPC Classes  ?

• H01F 5/06 - Insulation of windings
• H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables
• H01B 13/16 - Insulating conductors or cables by passing through, or dipping in, a liquid bathInsulating conductors or cables by spraying
• H01B 7/02 - Disposition of insulation

Abstract

An aspect of the present disclosure relates to a method for manufacturing an insulated electric wire, the method comprising: a step for applying a varnish including an insulating material and a solvent onto a linear conductor while causing the conductor to travel in an axial direction thereof; a step for raising the temperature of the varnish being applied in the applying step and maintaining the temperature lower than the boiling point of the solvent; a step for, after the temperature-raising step, causing the solvent to evaporate while maintaining a temperature difference between the temperature of the varnish and the boiling point of the solvent; and a step for curing the insulating material after the evaporating step.

IPC Classes  ?

• H01B 13/16 - Insulating conductors or cables by passing through, or dipping in, a liquid bathInsulating conductors or cables by spraying

Abstract

At least a surface of a reel pallet according to the present invention is made of resin. When a space along a first direction between a reel supported by a first reel support part and a reel supported by a second reel support part is denoted by La, a space along the first direction between an end of the reel supported by the second reel support part and a fourth side of a placement surface is denoted by Lb1, and a space along the first direction between an end face of the reel supported by the first reel support part and a second side of the placement surface is denoted by Lb2, the reel pallet satisfies the relationship 1

IPC Classes  ?

• B65D 19/44 - Elements or devices for locating articles on platforms

Abstract

A resin composition according to one aspect of the present disclosure comprises a polyamic acid and a solvent, wherein the polyamic acid has a repeating unit represented by general formula (1) in a molecule chain thereof, one end or each of both ends of the molecule chain has a structure represented by general formula (2), and the amount of the structure represented by general formula (2) relative to 1 mole of the repeating unit represented by general formula (1) is 0.001 to 0.1 mole inclusive. In the general formulae, R1represents a tetravalent organic group, R2represents a bivalent organic group, and R3 represents an organic group having 15 or less carbon atoms.

IPC Classes  ?

• C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors

Abstract

A conductor softening processing device according to one aspect of the present invention continuously heats and cools a wire-shaped conductor, and comprises: a conveyance mechanism that continuously conveys the conductor in the axial direction thereof; a heater that heats the conductor conveyed by the conveyance mechanism; a cooling tank that stores a cooling water, in which the conductor that was heated by the heater is submerged; and a dissolved oxygen quantity regulation mechanism that keeps the quantity of dissolved oxygen in the cooling water stored in the cooling tank within a predetermined set range, wherein the heater has a conveyance pipe that extends in the conveyance direction of the conductor and has a cavity formed in an interior section thereof, said cavity being for conveying the conductor, and a plurality of conductive wires that are embedded within the conveyance pipe along the conveyance direction and are wired such that a magnetic field becomes stronger at the center of a plane that is perpendicular to the conveyance direction in the cavity.

IPC Classes  ?

• C21D 9/60 - Continuous furnaces for strip or wire with induction heating
• C21D 1/42 - Induction heating
• C21D 9/573 - Continuous furnaces for strip or wire with cooling
• H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables

Abstract

An insulated electrical cable includes: a conductor; and an insulating layer that is laminated on an outer peripheral surface of the conductor and includes a polyimide as a main component, wherein the insulating layer includes a plurality of pores, and wherein a porosity of the insulating layer is greater than or equal to 25% by volume and less than or equal to 60% by volume.

IPC Classes  ?

• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 3/00 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties

Abstract

A method for producing an insulated electric wire includes a step of preparing a conductor having a linear shape; a step of forming an insulating coating so as to cover a surface on an outer peripheral side of the conductor to obtain an insulated electric wire that includes the conductor and the insulating coating covering the conductor; and a step of measuring a first electrostatic capacity between the insulated electric wire and a first electrode disposed outside in a radial direction of the insulated electric wire so as to face an outer peripheral surface of the insulated electric wire while transporting the insulated electric wire in a longitudinal direction of the conductor, and inspecting a formation state of the insulating coating, the formation state including a formation state of a defective portion in the insulating coating, on the basis of a change in the first electrostatic capacity.

IPC Classes  ?

• G01N 27/24 - Investigating the presence of flaws
• H01B 13/16 - Insulating conductors or cables by passing through, or dipping in, a liquid bathInsulating conductors or cables by spraying
• G01B 7/06 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width, or thickness for measuring thickness
• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials
• H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables

Abstract

The resin varnish according to one aspect of the present invention comprises a polyimide precursor which is a product of reaction between aromatic tetracarboxylic dianhydrides and an aromatic diamine, wherein the polyimide precursor has a weight-average molecular weight of 10,000-180,000 and the aromatic tetracarboxylic dianhydrides include a biphenyltetracarboxylic dianhydride in an amount of 25-95 mol% per 100 mol% the aromatic tetracarboxylic dianhydrides.

IPC Classes  ?

• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C08G 73/12 - Unsaturated polyimide precursors
• C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C09D 5/25 - Electrically-insulating paints or lacquers

Abstract

An insulated wire according to one embodiment of the present invention includes a linear conductor, and one or a plurality of insulating layers that are laminated on an outer peripheral surface of the conductor, wherein at least one layer of the one or plurality of insulating layers includes a plurality of pores, and a closed porosity within the plurality of pores is 80% by volume or higher.

IPC Classes  ?

• H01B 7/28 - Protection against damage caused by external factors, e.g. sheaths or armouring by moisture, corrosion, chemical attack or weather
• H01B 13/06 - Insulating conductors or cables
• H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables
• H01B 3/46 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes silicones

Abstract

An insulated wire according to the present disclosure is provided with a linear metal conductor and an insulating layer that is superposed on the outer circumferential surface of the metal conductor. The insulating layer has a multilayer structure that is composed of two or more insulating films; at least one of the two or more insulating films is a polyimide film that is mainly composed of a polyimide; and the insulating layer contains two or more residual solvents that have different boiling points.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• C09D 5/25 - Electrically-insulating paints or lacquers
• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors

Abstract

The self-fusing resin composition pertaining to an embodiment of the present invention has a phenoxy resin as a main component thereof, wherein the self-fusing resin composition includes an inorganic filler, and the elastic modulus thereof at 200°C after curing treatment is 10 MPa to 200 MPa.

IPC Classes  ?

• C08L 71/10 - Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
• C08L 81/06 - PolysulfonesPolyethersulfones
• H01B 7/02 - Disposition of insulation

Abstract

An insulated electric wire includes a linear conductor and one or more of insulating layers formed on an outer peripheral surface of the conductor. In the insulated electric wire, at least one of the one or more of insulating layers has a plurality of pores, outer shells are disposed on peripheries of the pores, and each of the outer shells has a plurality of projections on an outer surface thereof.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• H01B 13/16 - Insulating conductors or cables by passing through, or dipping in, a liquid bathInsulating conductors or cables by spraying
• H01F 5/06 - Insulation of windings
• H01B 7/17 - Protection against damage caused by external factors, e.g. sheaths or armouring
• H01B 3/44 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes vinyl resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes acrylic resins
• H01B 5/00 - Non-insulated conductors or conductive bodies characterised by their form

Abstract

An insulated electric wire 1 that comprises: a conductor 10 that has a linear shape; and an insulating film 20 that is formed to cover the outer peripheral side of the conductor. The insulating film 20 comprises a polyimide that has a polymer structure that includes a PMDA-ODA-type repeating unit A and a BPDA-ODA-type repeating unit B. The mole ratio [B/(A+B)]×100 (mole%) of the number of moles of repeating unit B to the total number of moles of repeating unit A and repeating unit B is greater than 55 mol%. The ratio M60/M10 of the insulating film 20 at 7% separation elongation to a first sample is at least 1.2, or the ratio M30/M10 of the insulating film 20 at 40% separation elongation to a second sample is at least 1.2.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes

Abstract

An insulated electric wire 11 that comprises: a linear conductor 12; and an insulating film 14 that surrounds an outer-peripheral-side surface 13 of the conductor 12. The insulating film 14 includes a polyimide layer that comprises a polyimide that has a polymer structure that includes a PMDA-ODA-type repeating unit A and a BPDA-ODA-type repeating unit B. The mole ratio [B×100/(A+B)] (mole%), as a percentage, of the number of moles of repeating unit B to the total number of moles of repeating unit A and repeating unit B is 25–95 mole%. The polyimide layer has a plurality of pores 15. The pores 15 occupy 5–80 volume% of the polyimide layer.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes

Abstract

The insulated wire relating to one embodiment of the present invention is provided with a conductor, and an insulating layer, which is laminated on the outer peripheral surface of the conductor, and which contains polyimide as a main component. The insulating layer contains a plurality of pores, and the porosity of the insulating layer is 25-60 vol%.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes

Abstract

Provided is an insulated electric wire comprising a linear conductor and an insulation layer that covers an outer peripheral surface of the conductor. The insulation layer includes a polyimide layer and a polyamide-imide layer having a plurality of holes inside thereof. The porosity of the polyamide-imide layer is 20-80 vol.%.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation

Abstract

An insulated electric cable according to one embodiment of this invention is an electric cable comprising a linear conductor and an insulating layer which is coated on the outer peripheral surface of the conductor, wherein the insulating layer is equipped with an inner porous layer having a plurality of pores, and an outer porous layer which is positioned on the outside of the inner porous layer and which has a plurality of pores. In the insulating layer, the independent porosity of the pores is at least 80% by volume, the porosity of the inner porous layer does not exceed 10% by volume, and the porosity of the outer porous layer falls within the range of 25% by volume to 50% by volume (inclusive).

IPC Classes  ?

• H01B 7/02 - Disposition of insulation

Abstract

This insulated electric cable is an insulated electric cable comprising a linear conductor and an insulating layer coated on the outer peripheral surface of this conductor, wherein the insulating layer contains a plurality of pores, the porosity of the insulating layer falls within the range of 20% by volume to 65% by volume (inclusive), the film thickness of the insulating layer is measured at 8 points on cross sections at 30 locations at 50 cm intervals in the longitudinal direction of the insulating cable, and the variability ratio according to formula (1) calculated from these measurements does not exceed 25%. Formula (1): variability ratio (%)=(4σ/average film thickness)×100 (in formula (1), average film thickness represents an average value of different measurements, and σ represents the standard deviation of the different measurements)

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• H01F 5/06 - Insulation of windings

Abstract

An insulated wire according to one embodiment of the present invention comprises a linear conductor and one or more insulating layers that are laminated on the outer circumferential surface of the conductor. At least one of the one or more insulating layers contains a plurality of pores; and the closed porosity of the pores is 80% by volume or more.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation

Abstract

This method for manufacturing a copper wire member comprises: a step in which a wire member (1) that comprises copper or a copper alloy is prepared, the wire member (1) having a cross-section (1A) that is perpendicular to the lengthwise direction (L) and a first flat surface (1B) that is parallel to the lengthwise direction (L); and a step in which, as the wire member (1) is advanced in a direction (D2) that follows the lengthwise direction (L), first ultrasonic waves (42a) are transmitted towards the first flat surface (1B), first reflected waves that are first ultrasonic waves (42a) that have been reflected by the wire member (1) are received, and internal defects in the wire member (1) are detected on the basis of the first reflected waves. It is possible, thereby, to adequately detect fine defects inside the copper wire member, thus allowing a copper wire member of consistent quality to be manufactured.

IPC Classes  ?

• G01N 29/04 - Analysing solids
• G01N 29/27 - Arrangements for orientation or scanning by moving the material relative to a stationary sensor
• H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables

Abstract

This insulated electric wire production method comprises: the step of preparing a conductor having a linear shape, the conductor containing a first conductor flat region and a second conductor flat region which are linear regions in the outer peripheral shape of a cross section orthogonal to the length direction, and a first conductor corner region connecting the first conductor flat region to the second conductor flat region; the step of covering the outer peripheral side of the conductor with an insulating material, thereby forming over the conductor an insulation coat comprising the insulating material and having, in the outer peripheral shape of a cross section orthogonal to the direction along the length direction of the conductor, a first coating flat region, a second coating flat region, and a first coating corner region, respectively corresponding to the first conductor flat region, the second conductor flat region, and the first conductor corner region; and the step of inspecting the formed state of the insulation coat. In the step of inspecting the formed state of the insulation coat, a laser light is irradiated onto a first position in the first coating flat region, and a second position separated from the first position in a peripheral direction of the insulation coat, while a laser light is irradiated onto a third position in the second coating flat region, and from these lights, a coating surface reflection light, which is a reflected light from the surface of the insulation coat, and an interface reflection light, which is a reflected light from the interface between the insulation coat and the conductor, serve as the basis for inspecting the formed state of the insulation coat.

IPC Classes  ?

• H01B 13/16 - Insulating conductors or cables by passing through, or dipping in, a liquid bathInsulating conductors or cables by spraying
• G01B 11/06 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness for measuring thickness
• H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables
• H01F 5/06 - Insulation of windings

Abstract

A production method for an insulated electric wire, the production method including: a step for preparing a linearly-shaped conductor; a step for forming an insulating coating film over the outer circumferential surface of the conductor so as to obtain an insulated electric wire that includes the conductor and the insulating coating film that coats the conductor; and a step for measuring, while the insulated electric wire is transported in the long direction of the conductor, a first electrostatic capacity that is between the insulated electric wire and a first electrode that is arranged on the radial-direction outside of the insulated electric wire so as to face the outer circumferential surface of the insulated electric wire and for inspecting the formation state of the insulating coating film, including the formation state of defects in the insulating coating film, on the basis of shifts in the first electrostatic capacity.

IPC Classes  ?

• H01B 13/16 - Insulating conductors or cables by passing through, or dipping in, a liquid bathInsulating conductors or cables by spraying
• H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables

Abstract

A production method for an insulated electric wire, the production method including: a step for preparing a linearly-shaped conductor; a step for forming an insulating coating film that comprises an insulator and has pores on the inside thereof over the outer circumferential surface of the conductor so as to obtain an insulated electric wire that includes the conductor and the insulating coating film that coats the conductor; and a step for detecting the electrostatic capacity of the insulated electric wire and inspecting the formation state of the insulating coating film on the basis of the relationship between said electrostatic capacity and the porosity of the insulating coating film.

IPC Classes  ?

• H01B 13/16 - Insulating conductors or cables by passing through, or dipping in, a liquid bathInsulating conductors or cables by spraying
• H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables

Abstract

Provided is an insulated wire that comprises a wire-like conductor and one or multiple insulating layers laminated on the outer circumferential surface of the conductor. At least one layer of the one or multiple insulating layers has multiple pores, and has an outer shell at the periphery of the pores. The outer shell has multiple protrusions in the outer surface thereof.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• H01B 13/16 - Insulating conductors or cables by passing through, or dipping in, a liquid bathInsulating conductors or cables by spraying
• H01F 5/06 - Insulation of windings

Abstract

An insulated electric wire includes a linear conductor and one or a plurality of insulating layers formed on an outer peripheral surface of the conductor. At least one of the one or plurality of insulating layers contains a plurality of pores, outer shells are disposed on peripheries of the pores, and the outer shells are derived from shells of hollow-forming particles having a core-shell structure. A varnish for forming an insulating layer contains a resin composition forming a matrix and hollow-forming particles having a core-shell structure and dispersed in the resin composition. In the varnish, cores of the hollow-forming particles contain a thermally decomposable resin as a main component, and shells of the hollow-forming particles contain a main component having a higher thermal decomposition temperature than the thermally decomposable resin.

IPC Classes  ?

• H01B 3/48 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
• H01B 3/44 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes vinyl resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes acrylic resins
• H01B 3/00 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties
• C08J 9/26 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
• H01B 3/46 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes silicones
• H01B 7/02 - Disposition of insulation
• H01B 13/06 - Insulating conductors or cables
• H01B 13/16 - Insulating conductors or cables by passing through, or dipping in, a liquid bathInsulating conductors or cables by spraying
• H01B 5/00 - Non-insulated conductors or conductive bodies characterised by their form

Abstract

A winding device that comprises a bobbin driving mechanism for causing a bobbin having a cylindrical body and a flange portion on both sides thereof to reciprocate in the axial direction of the bobbin and that winds a wire in a multilayer winding on the bobbin, wherein the winding device comprises a camera that captures an image of the bobbin from the tangential direction of the body, and a control unit that sets the timing for reciprocating the bobbin on the basis of the image captured by the camera.

IPC Classes  ?

• B65H 54/28 - Traversing devicesPackage-shaping arrangements

Abstract

An insulated wire which comprises a linear conductor and one or more insulating layers laminated on the outer circumferential surface of the conductor, and wherein the insulating layers contain a silicone.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation

Abstract

An insulating electric wire according to one embodiment of the present invention is provided with a linear conductor and one or more insulating layers layered on the outer circumferential surface of the conductor, wherein at least one of the one or more insulating layers includes a plurality of pores, an outer shell is provided on the circumferential edge portion of the pores, and the outer shell is derived from particles forming the hollow of a core-shell structure. Varnish for forming insulating layers according to one embodiment of the present invention is used for forming an insulating layer included in an insulating electric wire, and contains a resin composition forming a matrix and particles which are dispersed in the resin composition and which form the hollow of a core-shell structure, wherein the core of the hollow-forming particles contains a heat decomposable resin as a main component, and the heat decomposition temperature of the main component of the shell of the hollow-forming particles is higher than the heat decomposition temperature of the heat decomposable resin.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• H01B 13/14 - Insulating conductors or cables by extrusion

Abstract

The present invention addresses the problem of providing a self-bonding insulated wire that makes it easy to fasten wires together and that is unlikely to generate dust. A self-bonding insulated wire according to one embodiment of the present invention is provided with a linear metal conductor, an insulating layer that is layered on the outer circumferential side of the metal conductor, an expansion layer that is layered on the outer circumferential side of the insulating layer and that expands as a result of being heated, and a thermal bonding layer that is layered on the outer circumferential side of the expansion layer. The expansion layer may comprise: a matrix having a synthetic resin as a main component; and thermally expandable microcapsules or a chemical foaming agent that are dispersed in the matrix. The average thickness expansion rate of the expansion layer after heating is preferably 1.1 to 5 times. The porosity of the expansion layer after heating is preferably 10 to 80%. The average thickness of the thermal bonding layer is preferably 5 to 200 µm.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• H01F 5/06 - Insulation of windings

Abstract

An insulating varnish forms an insulating coating film having a shape that corresponds to the shape of an opening of a die, having a uniform thickness. The insulating varnish is applied onto a surface of a conductor, subsequently passes through a die to remove the excess applied insulating varnish, and is then dried or baked to form an insulating coating film on the surface of the conductor. The insulating varnish has a viscosity of 10 Pa·s or more measured by a B-type viscometer at 30° C. The insulating varnish preferably contains no filler, and is preferably a polyimide precursor solution. Since the insulating varnish has a high viscosity, baking and solidification can be performed while maintaining a shape formed when the insulating varnish passes through a die.

IPC Classes  ?

• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• H01B 7/08 - Flat or ribbon cables
• H01B 13/06 - Insulating conductors or cables
• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C09D 201/00 - Coating compositions based on unspecified macromolecular compounds
• C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors

Abstract

This insulating cable is provided with a conductor having a metal as a main component, and an insulating layer, which directly covers the circumferential surface of the conductor, and which has a resin as a main component. The insulating layer contains inorganic particles formed of the same metal as the metal of the main component of the conductor, or a compound containing the metal, and the content rate of the inorganic particles in the inner layer of the insulating layer, said inner layer having a thickness of 800 nm from the conductor circumferential surface, is 0.005-1 vol %.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• H01B 3/40 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes epoxy resins
• H01F 5/06 - Insulation of windings

Abstract

A die (10) with bearings has a die (1) and a bearing member (2). The die (1) has one end surface (3) and another end surface (4) that face each other and has a through hole (5) that passes through between the one end surface (3) and other end surface (4). The bearing member (2) is disposed on the one end surface (3) side of the die (1). The bearing member (2) includes a rolling element (7) and is constituted such that, on the basis of the rolling of the rolling element (7), the die (1) can either rotate around the passage direction in which the through hole (5) passes through or move within a plane orthogonal to the passage direction or do both. Thus, a die (10) with bearings, a device for manufacturing insulated wire, and a method for manufacturing insulated wire that can reduce variations in the thickness of insulating material applied to a conductor can be provided.

IPC Classes  ?

• H01B 13/16 - Insulating conductors or cables by passing through, or dipping in, a liquid bathInsulating conductors or cables by spraying
• B05C 3/15 - Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length not supported on conveying means
• H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables

Abstract

This insulated electric wire is provided with a conductor having aluminum or aluminum alloy as a primary component thereof, and an insulation layer for covering the peripheral surface of the conductor, and is characterized in that the average number of torsions until delamination of the insulation layer in a delamination test is 50 or more. In the present invention, the average value of the dielectric breakdown voltage per unit thickness of the insulation layer in a glycerin solution is preferably at least 0.15 kV/µm. The carbon concentration on the peripheral surface of the conductor is preferably 10 mass% or less. The peripheral surface of the conductor may be processed to reduce carbon. This carbon reduction process may be a washing process using a liquid. The insulation layer may have a primer layer containing a phenoxy resin as a primary component thereof, and a biphenyl-containing polyamide imide layer containing a biphenyl-containing polyamide imide resin as a primary component thereof layered on the peripheral surface of the conductor.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• H01B 7/00 - Insulated conductors or cables characterised by their form
• H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables

Abstract

Provided is an insulating varnish that easily forms an insulating coating film having a shape that is in accordance with the shape of the opening of dies, namely an insulating coating having a uniform thickness. The insulating varnish forms an insulating coating film at a conductor surface by means of being applied to the conductor surface, then excess applied insulating varnish is removed by means of the passage through dies, and next drying and baking, wherein the viscosity at 30°C as measured by a type-B viscometer is at least 10 Pa·s. Preferably, a filler is not contained, and preferably, the present invention is a polyimide precursor solution. Due to being highly viscous, baking and hardening is possible while holding the shape from the time of passage through dies, and it is possible to form an insulating coating film having a shape that is in accordance with the shape of the opening of the dies.

IPC Classes  ?

• C09D 201/00 - Coating compositions based on unspecified macromolecular compounds
• C09D 5/25 - Electrically-insulating paints or lacquers
• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• H01B 7/02 - Disposition of insulation

Abstract

Provided is a polyimide resin varnish capable of forming an insulating layer having high inter-layer adhesion, high adhesion to a conductor, and excellent processing resistance. Also provided is an insulated electric wire having excellent processing resistance, heat resistance, and mechanical properties. The polyimide resin varnish has as the main component thereof a polyimide precursor resin obtained by reacting an aromatic diamine and an aromatic tetracarboxylic dianhydride. The imide group concentration of the polyimide precursor resin after imidization is 28.0%-33.0%.

IPC Classes  ?

• C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C09D 5/25 - Electrically-insulating paints or lacquers
• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• H01B 7/02 - Disposition of insulation
• H01F 5/00 - Coils
• H01F 5/06 - Insulation of windings
• H02K 1/04 - Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
• H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation

Abstract

Provided is an insulated electrical wire allowing for a high corona inception voltage and also able to satisfy such required properties as heat resistance and mechanical strength. A polyimide resin varnish having as a main ingredient a polyimide precursor resin obtained by reacting an aromatic diamine and an aromatic tetracarboxylic dianhydride, wherein the aromatic diamine is composed of a first aromatic diamine having an aromatic ether bond and having at least three benzene rings, and a second aromatic diamine represented by formula (2), and wherein the post-imidization imide group concentration of the polyimide precursor resin is 25% to 35%, inclusive. (In the formula, R is CH2 or O.)

IPC Classes  ?

• C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• H01B 7/02 - Disposition of insulation
• H01F 5/06 - Insulation of windings
• H01F 7/06 - ElectromagnetsActuators including electromagnets

Abstract

Provided are: a varnish capable of forming a low-permittivity insulating layer which comprises a polyester imide as the main component; and an insulated wire in which a low permittivity is attained using the varnish. The varnish comprises, as the main component, a polyester imide resin obtained by reacting a carboxylic component that consists of a carboxylic acid component containing a dicarboxylic acid, or an anhydride or alkyl ester thereof with an alcohol component and a diamine compound. In the polyester imide resin, the monomer composition is regulated so as to give a molar ratio (OH/COOH) of the hydroxyl of the alcohol component to the carboxyl of the carboxylic component of 1.9 or less, or the content of imido (which exhibits high polarizability) per unit polyester imide molecular chain is reduced by increasing the molecular weights of the starting monomers. It is preferable to use, as the starting monomers, a carboxylic acid component containing a dicarboxylic acid having a molecular weight of 167 or more and/or a diamine compound having a molecular weight of 250 or more.

IPC Classes  ?

• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• C08G 18/34 - Carboxylic acidsEsters thereof with monohydroxyl compounds
• C08G 73/16 - Polyester-imides
• C08L 61/06 - Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
• C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C09D 5/25 - Electrically-insulating paints or lacquers
• C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• H01B 7/02 - Disposition of insulation

Abstract

An insulated wire includes a conductor, a foundation layer covering the conductor, and an insulated layer formed on the foundation layer. The foundation layer is configured with a hardening body of a resin composition including a heat curing resin having an epoxy resin, and a reactive functional group. The heat curing resin includes 1 to 10 parts by mass with respect to 100 parts by mass of the epoxy resin. Further, the heat curing resin preferably includes 5 to 30 parts by moss of blocked isocyanate with respect to 100 parts by mass of the epoxy resin.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• C08G 59/62 - Alcohols or phenols
• H02K 3/30 - Windings characterised by the insulating material

Abstract

Disclosed is a lubricating insulated electric wire comprising a lubricating agent coated onto an insulated electric wire comprising a conductor and an insulating layer covering the conductor. The lubricating insulated electric wire is characterized in that the lubricating agent is formed of an aliphatic acid ester which has an ester group in its molecule and is liquid at room temperature. The lubricating insulated electric wire is excellent in surface slipperiness and fixation to varnish. There is also provided a motor comprising a coil and the lubricating insulated electric wire wound around the coil. The motor can simultaneously realize excellent reliability of insulating properties and excellent fixation between the insulated electric wire and varnish.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• H01B 3/20 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils
• H02K 3/30 - Windings characterised by the insulating material

Abstract

Disclosed is an insulated wire comprising a conductor, a primer layer covering the conductor, and an insulating layer covering the primer layer. The primer layer is formed by curing an epoxy resin.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• H01F 5/00 - Coils
• H01F 5/06 - Insulation of windings

Abstract

Disclosed is an insulated electrical wire which is relatively inexpensive, is excellent in mechanical strength including hardness and thermal softening resistance, and has an insulating coating having a high corona discharge inception voltage. Specifically, the insulated electrical wire comprises a conductor and an insulating coating which covers the conductor, wherein the insulating coating has an insulating layer formed by applying and baking a mixed resin of a polyether imide and a polyester imide. More specifically, in the insulated electrical wire, the mixing ratio of the polyester imide to the polyether imide is 75:25 to 10:90 by weight. Also disclosed is an electrical coil produced by winding the insulated electrical wire. Further disclosed is a motor utilizing the electrical coil.

IPC Classes  ?

• H01B 7/02 - Disposition of insulation
• H01B 7/00 - Insulated conductors or cables characterised by their form
• H01F 27/32 - Insulating of coils, windings, or parts thereof
• H02K 3/30 - Windings characterised by the insulating material