FR2307345A1 - Electrical insulator is felt of polyester fibres - having higher density surface skin formed by melting fibres - Google Patents

Electrical insulator is felt of polyester fibres - having higher density surface skin formed by melting fibres

Info

Publication number
FR2307345A1
FR2307345A1 FR7511258A FR7511258A FR2307345A1 FR 2307345 A1 FR2307345 A1 FR 2307345A1 FR 7511258 A FR7511258 A FR 7511258A FR 7511258 A FR7511258 A FR 7511258A FR 2307345 A1 FR2307345 A1 FR 2307345A1
Authority
FR
France
Prior art keywords
fibres
higher density
fabric
electrical insulator
melting
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.)
Granted
Application number
FR7511258A
Other languages
French (fr)
Other versions
FR2307345B1 (en
Inventor
Pierre Porte
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.)
Rhone Poulenc Textile SA
Original Assignee
Rhone Poulenc Textile SA
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 Rhone Poulenc Textile SA filed Critical Rhone Poulenc Textile SA
Priority to FR7511258A priority Critical patent/FR2307345A1/en
Publication of FR2307345A1 publication Critical patent/FR2307345A1/en
Application granted granted Critical
Publication of FR2307345B1 publication Critical patent/FR2307345B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
    • H01B3/485—Other fibrous materials fabric

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Organic Insulating Materials (AREA)

Abstract

An electrical insulator is a non-woven fabric of polyester fibres contg. a chemical binder, the fibres having a denier of 4 (pref. 2). The fabric has on each face a surface skin which is of higher density than the inner region and which is formed by melting the surface fibres. The weight of the fabric is 150 gm/m2 (pref. 60-140 gm/m2) for a specific weight of 1.29-0.6 gm/cm3, and the porosity to air is 0.9%. The dielectric coefft. is >30 Kveff/mm. The fabric is cheap to produce and provides good dielectric insulation. It does not degrade on heating to produce water which increases its conductivity. The insulator is used for condensers, high tension cables, transformers etc.
FR7511258A 1975-04-10 1975-04-10 Electrical insulator is felt of polyester fibres - having higher density surface skin formed by melting fibres Granted FR2307345A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7511258A FR2307345A1 (en) 1975-04-10 1975-04-10 Electrical insulator is felt of polyester fibres - having higher density surface skin formed by melting fibres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7511258A FR2307345A1 (en) 1975-04-10 1975-04-10 Electrical insulator is felt of polyester fibres - having higher density surface skin formed by melting fibres

Publications (2)

Publication Number Publication Date
FR2307345A1 true FR2307345A1 (en) 1976-11-05
FR2307345B1 FR2307345B1 (en) 1977-11-10

Family

ID=9153759

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7511258A Granted FR2307345A1 (en) 1975-04-10 1975-04-10 Electrical insulator is felt of polyester fibres - having higher density surface skin formed by melting fibres

Country Status (1)

Country Link
FR (1) FR2307345A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122967A2 (en) * 1983-04-22 1984-10-31 Firma Carl Freudenberg Flat insulating fabric and method for its production

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610384A (en) * 1948-12-03 1952-09-16 British Celanese Process of producing a textile product
DE2249138A1 (en) * 1972-10-06 1974-04-11 Giulini Gmbh Geb Synthetic matted fibre reinforcing webs - by compaction and melting of outer fibre layers with heated pressure rollers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610384A (en) * 1948-12-03 1952-09-16 British Celanese Process of producing a textile product
DE2249138A1 (en) * 1972-10-06 1974-04-11 Giulini Gmbh Geb Synthetic matted fibre reinforcing webs - by compaction and melting of outer fibre layers with heated pressure rollers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122967A2 (en) * 1983-04-22 1984-10-31 Firma Carl Freudenberg Flat insulating fabric and method for its production
EP0122967A3 (en) * 1983-04-22 1987-02-04 Firma Carl Freudenberg Flat insulating fabric and method for its production

Also Published As

Publication number Publication date
FR2307345B1 (en) 1977-11-10

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Legal Events

Date Code Title Description
ST Notification of lapse