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 fibresInfo
- 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
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.
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)
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)
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 |
-
1975
- 1975-04-10 FR FR7511258A patent/FR2307345A1/en active Granted
Patent Citations (2)
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)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SE7909680L (en) | ELECTRIC INDUCTIVE DEVICE | |
JPS56100104A (en) | Method of drying wet gaseous hydrogen current | |
FR2348559A1 (en) | Electrical contact breaker with chicane blow-out chamber - has panels forming chicane with some insulated panels | |
FR2307345A1 (en) | Electrical insulator is felt of polyester fibres - having higher density surface skin formed by melting fibres | |
SE7809798L (en) | PROCEDURE FOR THE PRODUCTION OF ELECTRIC INSULATING, HIGH FLEXIBLE AND / OR PLADABLE COVERINGS | |
EP0456554A3 (en) | Electrical conducting element and producing method | |
JPS52102678A (en) | Heat conductive electric insulation sheet and method of manufacture thereof | |
FR2517460B1 (en) | ||
JPS5386401A (en) | Electrical insulation coil | |
JPS5482026A (en) | Preparing molded coil | |
JPS54136441A (en) | Heat-generating body | |
JPS5466405A (en) | Insulation processing winding for machine | |
SU456870A1 (en) | Fibrous pulp for making electrically insulating paper | |
JPS5389992A (en) | Foaming polyolefine insulated wire | |
GB2064579B (en) | Electrical structure having an oil impregnated paper insulation | |
GB1493227A (en) | Electrical cable | |
GB1544044A (en) | Electrical insulating paper and method of making same | |
JPS53142442A (en) | Manufacturing of insulated conductor | |
JPS5376400A (en) | Oil-filled | |
JPS5450903A (en) | Manufacture of electric winding | |
GB882615A (en) | Electric power cable | |
JPS5610042A (en) | Slot liner for winding wire of electric machine | |
JPS6412843A (en) | Manufacture of electrically insulating coil | |
JPS57172713A (en) | Manufacture of insulated coil | |
JPS5372105A (en) | Hydroextractor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |