GB1260520A - Improvements in or relating to electrical capacitors - Google Patents

Improvements in or relating to electrical capacitors

Info

Publication number
GB1260520A
GB1260520A GB6104369A GB6104369A GB1260520A GB 1260520 A GB1260520 A GB 1260520A GB 6104369 A GB6104369 A GB 6104369A GB 6104369 A GB6104369 A GB 6104369A GB 1260520 A GB1260520 A GB 1260520A
Authority
GB
United Kingdom
Prior art keywords
films
stretched
rollers
film
dec
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB6104369A
Inventor
Brian Frederick Street
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Cellophane Ltd
Original Assignee
British Cellophane Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by British Cellophane Ltd filed Critical British Cellophane Ltd
Priority to GB6104369A priority Critical patent/GB1260520A/en
Priority to FR7044955A priority patent/FR2073713A5/fr
Priority to DE19702061728 priority patent/DE2061728A1/en
Publication of GB1260520A publication Critical patent/GB1260520A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/018—Dielectrics
    • H01G4/20—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06
    • H01G4/22—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 impregnated
    • H01G4/221—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 impregnated characterised by the composition of the impregnant
    • H01G4/222—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 impregnated characterised by the composition of the impregnant halogenated
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/018—Dielectrics
    • H01G4/06—Solid dielectrics
    • H01G4/14—Organic dielectrics
    • H01G4/18—Organic dielectrics of synthetic material, e.g. derivatives of cellulose
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/018—Dielectrics
    • H01G4/20—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06
    • H01G4/22—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 impregnated

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

1,260,520. Pin-hole free films. BRITISH CELLOPHANE Ltd. 8 Dec., 1970 [15 Dec., 1969], No. 61043/69. Heading B5B. [Also in Division H1] A pin-hole free plastics film suitable for a capacitor dielectric is manufactured by superimposing two films of stretch orientatable plastics material, heating the combination to a stretch orientatable state and stretching in at least one direction thus bonding the two films together. The material may be polyethylene, polypropylene, polystyrene, a polyester, a polycarbonate, a polysulphonate, polyphenylene oxide or unplasticized polyvinyl chloride. Preferably the films are stretched longitudinally and transversely, simultaneously or sequentially. A film may be stretched in one direction by drawing it over heated rollers, the forward rollers being driven at a greater peripheral speed than the rear rollers. The stretched film is slit down the middle, the portions superimposed and stretched at right angles in a tenter frame in a heated oven.
GB6104369A 1969-12-15 1969-12-15 Improvements in or relating to electrical capacitors Expired GB1260520A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB6104369A GB1260520A (en) 1969-12-15 1969-12-15 Improvements in or relating to electrical capacitors
FR7044955A FR2073713A5 (en) 1969-12-15 1970-12-14
DE19702061728 DE2061728A1 (en) 1969-12-15 1970-12-15 Electric capacitor and process for its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6104369A GB1260520A (en) 1969-12-15 1969-12-15 Improvements in or relating to electrical capacitors

Publications (1)

Publication Number Publication Date
GB1260520A true GB1260520A (en) 1972-01-19

Family

ID=10486525

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6104369A Expired GB1260520A (en) 1969-12-15 1969-12-15 Improvements in or relating to electrical capacitors

Country Status (3)

Country Link
DE (1) DE2061728A1 (en)
FR (1) FR2073713A5 (en)
GB (1) GB1260520A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806775A (en) * 1971-10-19 1974-04-23 Du Pont Polyolefin capacitor construction
FR2283534A1 (en) * 1974-07-15 1976-03-26 Radiotechnique Compelec Microcondensers for miniature low voltage circuits - with dielectric cores of super imposed monomolecular layer coatings
DE3312076A1 (en) * 1983-04-02 1984-10-04 O.D.A.M. - Office de Distribution d'Appareils Médicaux, Wissembourg HIGH ENERGY DENSITY CAPACITOR AND METHOD FOR PRODUCING THE SAME
CN111261404B (en) * 2020-01-14 2021-08-03 泉州嘉德利电子材料有限公司 Preparation method of synchronous-stretching polypropylene high-temperature-resistant film for wireless charging

Also Published As

Publication number Publication date
FR2073713A5 (en) 1971-10-01
DE2061728A1 (en) 1971-06-24

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees