# US 10,483,042 B2 · Method of manufacturing a capacitive electrical device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,483,042 B2 - Document ID: US10483042B2 - Status: Granted - Kind: B2 - Application number: 15/740,241 - Filed: 2016-06-22 - Published: 2018-07-12 - Granted: 2019-11-19 - Earliest claimed: 2015-06-30 - Assignees: ABB Schweiz AG - Applicants: ABB Schweiz AG - Inventors: Peter Sjöberg; Roger Hedlund; Ylva Granbom - Web page: https://patentgrep.com/patent/US10483042B2 ## CPC - H01G 4/32: Wound capacitors - B29C 53/56: Winding and joining, e.g. winding spirally {(winding in general B65H)} - B29C 65/52: {characterised by the way of} applying the adhesive {(B29C65/50 takes precedence; apparatus for applying liquids in general B05C; processes for applying liquids in general B05D)} - B29C 66/43: {Joining a relatively small portion of the surface of said articles (B29C66/45 takes precedence)} - B32B 37/16: with all layers existing as coherent layers before laminating - H01B 17/28: Capacitor type - H01G 4/005: Electrodes - H01G 13/02: Machines for winding capacitors - B29K 2995/0005: Conductive - B29K 2995/0007: Insulating - B29L 2031/3406: {Components, e.g. resistors} - B32B 2307/202: Conductive - B32B 2307/206: Insulating - B32B 2457/16: Capacitors - H01G 4/18: of synthetic material, e.g. derivatives of cellulose (H01G4/16 takes precedence) - H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10) - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) - B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract A method of manufacturing a capacitive electrical device is disclosed. The method includes a) bonding a first electrical insulation film with a second electrical insulation film to obtain a single electrical insulation film that has a larger surface area than any of the first electrical insulation film and the second electrical insulation film has alone, b) providing a conductive layer onto the single electrical insulation film, and c) winding the single electrical insulation film and the conductive layer around a shaft to obtain a layer of the single electrical insulation film and a layer of the conductive layer wound onto the shaft, thereby forming the capacitive electrical device. ## Claims ### Claim 1 A method of manufacturing a capacitive electrical device, wherein the method comprises: a) bonding a first electrical insulation film with a second electrical insulation film to obtain a single electrical insulation film that has a larger surface area than any of the first electrical insulation film and the second electrical insulation film has alone, b) providing a conductive layer onto the single electrical insulation film, and c) winding the single electrical insulation film and the conductive layer around a shaft concurrently to obtain a layer of the single electrical insulation film and a layer of the conductive layer wound onto the shaft for forming the capacitive electrical device, the first electrical insulation film and the second electrical insulation film being bonded to form the single electrical insulation film prior to them being wound around the shaft. ### Claim 2 (depends on 1) The method according to claim 1, including prior to step a), placing a first edge of the first electrical insulation film and a second edge of the second electrical insulation film towards each other to obtain a slot between the first electrical insulation film and the second electrical insulation film, wherein step a) involves applying a bonding agent into the slot and onto the first edge and the second edge to thereby bond the first electrical insulation film to the second electrical insulation film. ### Claim 3 (depends on 2) The method according to claim 2, including prior to step b), removing excessive bonding agent material from surfaces of the single electrical insulation film. ### Claim 4 (depends on 3) The method according to claim 3, wherein step a) involves moving an injection tool parallel with the slot along the entire first edge and the entire second edge, wherein the bonding agent is provided into the slot by the injection tool as the injection tool moves relative to the first electrical insulation film and the second electrical insulation film, along the entire first edge and the entire second edge. ### Claim 5 (depends on 2) The method according to claim 2, wherein step a) involves moving an injection tool parallel with the slot along the entire first edge and the entire second edge, wherein the bonding agent is provided into the slot by the injection tool as the injection tool moves relative to the first electrical insulation film and the second electrical insulation film, along the entire first edge and the entire second edge. ### Claim 6 (depends on 2) The method according to claim 2, wherein the placing involves placing the first electrical insulation film and the second electrical insulation film on a first roll, and feeding the first electrical insulation film and the second electrical insulation film towards a nozzle by rotating the first roll, wherein step a) involves applying the bonding agent into the slot by the nozzle, and a′) shaping the bonding agent in the slot by rolling the single electrical insulation film between the first roll and a second roll. ### Claim 7 (depends on 2) The method according to claim 2, wherein the bonding agent is glue or a thermoplastic material. ### Claim 8 (depends on 1) The method according to claim 1, including prior to step a), placing a first end portion of the first electrical insulation film to overlap a second end portion of the second electrical insulation film to obtain an overlapping portion, wherein step a) involves heating the overlapping portion to bond the first electrical insulation film with the second electrical insulation film. ### Claim 9 (depends on 8) The method according to claim 8, wherein the first end portion includes a first edge of the first electrical insulation film and the second end portion includes a second edge of the second electrical insulation film, wherein step a) involves moving a heating tool along the overlapping portion, parallel with and along the entire extension of the first edge and the second edge. ### Claim 10 (depends on 9) The method according to claim 9, including a step a″) of removing excessive material from surface of the single electrical insulation film created in step a), prior to step b). ### Claim 11 (depends on 9) The method according to claim 9 including, after step a), rolling the overlapping portion between a first roll and a second roll to smoothen the single electrical insulation film. ### Claim 12 (depends on 8) The method according to claim 8, including a step a″) of removing excessive material from surface of the single electrical insulation film created in step a), prior to step b). ### Claim 13 (depends on 8) The method according to claim 8, including, after step a), rolling the overlapping portion between a first roll and a second roll to smoothen the single electrical insulation film. ### Claim 14 (depends on 13) The method according to claim 13, wherein the first roll and the second roll are heated such that the highest temperature of each of the first roll and the second roll is a respective section contacting the overlapping portion. ### Claim 15 (depends on 1) The method according to claim 1, wherein step a) involves bonding the first electrical insulation film with the second electrical insulation film such that the single electrical insulation film obtains a longer axial extension than any of the first electrical insulation film and the second electrical insulation film alone, with the axial extension being defined in the axial direction of the shaft. ### Claim 16 (depends on 1) The method according to claim 1, wherein the capacitive electrical device is a capacitive electrical device for a medium voltage electrical device or a high voltage electrical device. ### Claim 17 (depends on 1) The method according to claim 1, wherein the conductive layer is a conductive foil.