An electrically insulated electric conductor strip (1), in particular for electric motors and transformers, having a strip-like electric conductor (2) which has an upper cover surface (2a) and a lower cover surface (2b), two side edge surfaces (2c) and, at each end, an end edge surface, and having electrical insulation (3), which is arranged on at least one cover surface of the strip (2a, 2b). In order to create a conductor strip (1) of this kind which can be produced with reduced effort but has a high electrical insulation effect, the insulation comprises a paint layer (3a) and an adhesive strip (3b), which is adhered to the lower cover surface (2b) and/or the upper cover surface (2a) of the strip-like electrical conductor (2), more specifically at least in a region (4) in each case which borders a side edge surface (2c), the paint layer (3a) being beneath the adhesive tape (3b) and at least directly on the lower cover surface (2b) and/or on the upper surface (2a).

A manufacturing of wires with optimized insulation properties, providing an insulating wire and the wire drawing process for producing it. The wire enamel has three layers: base layer (2), middle layer (3) and top layer (4), wherein these layers wrap around the conducting wire (1) in this order. The wire drawing process is carried out by a) Primary drawing; b) Final drawing and c) Enameling process carried out in line, wherein the enameling is conducted preferably with a specific number of dies for each layer. The process and composition conditions of the wire allowed to provide a triple layer wire that presents high resistance to partial discharges, high thermal class and high resistance to abrasion, thus, increasing the service lifetime of the wire in demanding motor applications when high thermal, high mechanical and high electrical resistance are required.

Embodiments of a flame retardant composition are provided. The composition includes from 55% to 85% by weight of a blended matrix and from 15% to 45% by weight of a flame retardant package distributed within the blended matrix. The blended matrix includes a polyolefin component and a nitrogen-containing polymer component. In particular, the nitrogen-containing polymer component has a melting temperature of less than 240° C. The flame retardant package includes an acid source, a carbon source, a polyoxometalate ionic liquid, and a synergist. The flame retardant composition can be utilized in cables, such as fiber optic cables.

The invention relates to an electric cable (10) comprising a plurality of electric conductors (1) each having an insulation (2) and a common sheath (3) consisting of a plastic material, characterized in that the sheath (3) is applied directly on and around the insulation (2) of the conductors (1) without an intermediate layer and the sheath (3) is selected from the group of plastic materials which are both thermoplastic and elastic plastics at the same time and preferably have a polypropylene matrix or polyethylene matrix and, furthermore, a thin hard cover layer (4) made of a non-foamed material is formed around the sheath (3).

A film capacitor that includes: a wound body in which a dielectric film and a metal layer are wound, the dielectric film including a cured product of a first organic material having a hydroxy group and a second organic material that is an aromatic compound having an isocyanate group, the dielectric film including a first main surface and a second main surface opposed to each other in a thickness direction, the metal layer being disposed at least on the first main surface of the dielectric film. The first main surface of the dielectric film includes a plurality of protrusions having the second organic material. In an area range of 100 .Math.m by 140 .Math.m of the first main surface of the dielectric film, a skewness of the first main surface of the dielectric film is 0.782 to 14.3.

An electrically insulated cable that is excellent in in adhesion with a resin used for resin sealing is provided. According to the present invention, an electrically insulated cable (10) includes: a plurality of coated electric wires (11) and a sheath (12) covering outer peripheries of the plurality of coated electric wires, wherein an average value of surface roughness Rz of an outer surface of the sheath is 15 μm or more and 75 μm or less.

A conductive coated composite body is disclosed which has both good adhesion of a conductive coating film to a base and excellent electrical conductivity of the conductive coating film at the same time even in cases where a glass base or a base having low heat resistance is used; and a method for producing this conductive coated composite body. A conductive coated composite body includes: a base; a resin layer that is formed on at least a part of the base; and a conductive coating film that is formed on at least a part of the resin layer. The conductive coating film is a sintered body of silver fine particles; the main component of the resin layer is a polyurethane resin having an elongation at break of 600% or more; and the polyurethane resin has one of the functional groups represented by —COO—H, —COOR, —COO.sup.−NH.sup.+R.sub.2 and —COO.sup.−NH.sub.4.sup.+.

A film capacitor that includes a wound body having a dielectric film and a metal layer, the dielectric film including a cured product of a first organic material having a hydroxy group and a second organic material that is an aromatic compound having an isocyanate group, the metal layer being disposed at least on a first main surface of the dielectric film. The first main surface of the dielectric film includes a plurality of protrusions having the second organic material. In an area range of 100 .Math.m by 140 .Math.m of the first main surface of the dielectric film, the plurality of the protrusions have an average diameter of 0.58 .Math.m to 5.98 .Math.m and an average height of 0.11 .Math.m to 2.54 .Math.m, and a number of the plurality of the protrusions ranges from 50 to 450.

A composition contains a thermoplastic polyurethane, a first flame retardant (F1) selected from ammonium phosphate and ammonium polyphosphates, and a phosphorus-containing flame retardant (F2) selected from derivatives of phosphinic acid, derivatives of phosphonic acid, and derivatives of phosphoric acid. The composition according to the present invention is useful for the production of cable sheathings.

Disclosed is a self-extinguishing power cable with microcapsules and a method for manufacturing the same. A method of manufacturing a self-extinguishing power cable with a microcapsule, the method includes applying a mixed solution of water-soluble adhesive, a magnetic powder and a swellable powder on one surface of a first nonwoven fabric; magnetically treating and drying the first nonwoven fabric; pressing one surface of a second nonwoven fabric on the one surface of the first nonwoven fabric to form a single nonwoven fabric; and forming the single nonwoven fabric into a neutral conductor water blocking layer of an electrical power cable to manufacture the electrical power cable, wherein the microcapsule is provided between the first nonwoven fabric and the second nonwoven fabric.