WO1991017551A1 - Materiau d'isolation electrique - Google Patents

Materiau d'isolation electrique Download PDF

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Publication number
WO1991017551A1
WO1991017551A1 PCT/GB1991/000661 GB9100661W WO9117551A1 WO 1991017551 A1 WO1991017551 A1 WO 1991017551A1 GB 9100661 W GB9100661 W GB 9100661W WO 9117551 A1 WO9117551 A1 WO 9117551A1
Authority
WO
WIPO (PCT)
Prior art keywords
porous
weight percent
ptfe
copolymer
tape
Prior art date
Application number
PCT/GB1991/000661
Other languages
English (en)
Inventor
Andrea Gellan
William Patrick Mortimer, Jr.
Original Assignee
W.L. Gore & Associates, Inc.
W.L. Gore & Associates (Uk) Limited
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
Priority claimed from GB909009407A external-priority patent/GB9009407D0/en
Application filed by W.L. Gore & Associates, Inc., W.L. Gore & Associates (Uk) Limited filed Critical W.L. Gore & Associates, Inc.
Priority to EP91908818A priority Critical patent/EP0526556B1/fr
Priority to DE69130062T priority patent/DE69130062T2/de
Publication of WO1991017551A1 publication Critical patent/WO1991017551A1/fr
Priority to GB9219772A priority patent/GB2261668B/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • 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
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
    • H01B3/445—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds from vinylfluorides or other fluoroethylenic compounds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H01B7/0241—Disposition of insulation comprising one or more helical wrapped layers of insulation

Definitions

  • the present invention relates to an electrical insulating composite material, particularly though not exclusively for insulating wire.
  • the invention also includes a method of forming the insulating material, and insulated conductors.
  • PTFE polytetrafluoroethylene
  • TFE tetrafluoroethylene
  • PPVE perfluoro (propyl vinyl ether)
  • the present invention provides an electrical insulating composite material which comprises an intimate admixture of:
  • thermoplastic copolymer of tetrafluoroethylene and perfluoro (propyl vinyl ether) (a) 5-90 weight percent of a thermoplastic copolymer of tetrafluoroethylene and perfluoro (propyl vinyl ether) ;
  • PTFE polytetrafluoroethylene
  • the composite material itself may be non-porous or may be expanded to produce porous material.
  • the TFE/PPVE copolymer is preferably used in particulate form and preferably has a particle size in the range 1 to 180 microns, especially 20 to 100 microns.
  • the particles may have a wide range of particle sizes and preferably include particles having sizes right across the ranges. However, particles of narrow size range may also be used.
  • the TFE/PPVE copolymer particles preferably have a substantially regular shape, such as oblong or spherical.
  • the polytetrafluoroethylene component is of the coagulated dispersion type.
  • polytetrafluoroethylene PTFE
  • PTFE polytetrafluoroethylene
  • the PTFE resin can be used in powder form; or alternatively, the PTFE resin can be coagulated from an aqueous dispersion in the presence of perfluoroalkoxy TFE/PVE copolymer powder or dispersion. The coagulation of PTFE in the presence of a dispersion of the copolymer results in a co-coagulation of PTFE and copolymer.
  • the flocculated mixture may then be decanted and dried.
  • the electrically insulating material may be used for producing a covering for wire, or other electrically conductive substrate to which bonding is not normally required.
  • One particular aspect of the present invention provides a non-porous electrical insulating material for an electrical conductor comprising an intimate admixture of
  • thermoplastic copolymer of tetrafluoroethylene and perfluoro (propyl vinyl ether) 5 to 40 weight percent of a thermoplastic copolymer of tetrafluoroethylene and perfluoro (propyl vinyl ether) ;
  • the composite material comprises 5 to 40 wt% of copolymer (and 60 to 95 wt% PTFE) ; more particularly 8 to 20 wt% of copolymer (and 80 to 92 wt% of PTFE) .
  • the non-porous material typically has a density of 2.0 to 2.2 g/cc.
  • a method of insulating an electrical conductor comprising; paste extruding an electrically insulating material formed from an intimate mixture of 5 to 40 weight percent of a particulate thermoplastic copolymer of tetrafluoroethylene and perfluoro (propyl vinyl ether) ; and 60 to 95 weight percent of coagulated dispersion type polytetrafluoroethylene; applying said material to an electrically conductive substrate; and sintering the material before or after application to the substrate.
  • the paste extrusion step may be carried out using conventional PTFE extrusion techniques (for example in admixture with a liquid carrier, such as a hydrocarbon) .
  • a liquid carrier such as a hydrocarbon
  • the extruded composition is generally of thin section so as to allow efficient removal of the liquid carrier and formation of a solid material, usually in the form of a sheet, tape or filament. If necessary, the solid material may be mechanically worked, such as by calendering, to modify its shape or thickness prior to application to the substrate.
  • the solid material in the form of a tape is wrapped around the wire in overlapping turns.
  • the overlapping areas of the material may then be fused together, for example at temperatures of 350 to 450"C (for 0.5 to 20 minutes) .
  • the time will be in correspondence with the temperature employed. Temperatures as low as 320°C may be used at long sintering times. Lower temperatures tend to minimise degradation of the material.
  • the time and temperature conditions also depend on the construction of the insulated conductor, such as thickness of the insulation and number of cores in the wire.
  • wire electrical insulation made from wrapped and sintered tape produced from the composition has an unexpectedly better cut-through resistance and abrasion resistance than equivalent wire insulation made from fine powder PTFE alone.
  • a second particular aspect of the invention provides a porous material which is a composite of: a) 5-90 weight percent of a thermoplastic copolymer of tetrafluoroethylene and perfluoro(propyl vinyl ether) , and complementarily, intermingled therewith, b) 90-5 weight percent of a porous expanded structure of polytetrafluoroethylene.
  • thermoplastic copolymer will constitute about 5-50 weight percent of the composite.
  • the composite is useful as insulation on wire or cable, especially as electrical insulation.
  • thermoplastic copolymer will constitute about 50-95 weight percent of the composite.
  • the composite is useful as a reinforced thermoplastic copolymer film.
  • This aspect of the invention also provides a process for preparing the composites which comprises mixing the thermoplastic copolymer with a dispersion of the coagulated fine powder polytetrafluoroethylene resin or with a dispersion of the fine powder and coagulating the solids to obtain a resin blend, preparing pellets of the resin blend, forming a tape of the pellets and stretching the tape until a desired degree of porosity is attained in the resulting composite.
  • a flocculated mixture of the TFE/PPVE copolymer and PTFE, in particulate form is lubricated for paste extrusion with an ordinary lubricant known for use in paste extrusion, and is pelletized.
  • the pellets are preferably aged at 40-60"C and are then paste extruded into a desired shape, usually a film.
  • the extruded shape is then stretched, preferably in a series of at least two stretch steps while heating at between 35-360°C until a desired degree of porosity is attained.
  • the porosity occurs through the formation of a network of interconnected nodes and fibrils in the structure of the stretched PTFE film, as more fully described in U.S. Patent 3,953,566.
  • the density of the porous material will usually be less than 2.0 g/cc.
  • the TFE/PPVE copolymer melts and, depending on the amount present, may become entrapped in the pores or nodes formed, may coat the nodes or fibrils, or may be present on the outer surface of the membrane formed. Most likely a combination of each embodiment occurs, depending on whether the copolymer and the PTFE remain as distinct moieties.
  • the porous composite is useful as an insulation covering for wire and cable, particularly in electrical applications.
  • the composite can simply be wrapped around the wire or cable in overlapping turns. It is believed that the presence of the TFE/PPVE copolymer aids in adhering the layers of tape wrap to one another.
  • the porous composite can be sintered either before or after wrapping if desired to improve cohesiveness and strength of the tape per se. Once the porous composite is prepared, it can be compressed, if desired, to increase the density of the composite. Such compression does not significantly affect the increased matrix strength that is associated with expanded porous PTFE. Compression improves properties such as dielectric strength and cut-through resistance.
  • wire and cable insulation made from the non-porous or porous composites of this invention have unexpectedly better cut-through resistance, strength and abrasion resistance than insulation made from the TFE/PPVE copolymer alone or from non-expanded PTFE.
  • a third particular aspect of the present invention provides an insulated electrical conductor, which comprises a wire having wrapped around it two adjacent layers of the composite material, one layer being formed of non-porous composite material and the second layer being formed of porous composite material.
  • the layers are applied in the form of tapes wrapped (preferably counter-wrapped) around the wire in overlapping turns.
  • the layers may also be applied longitudinally with a longitudinal overlapping seam.
  • sintering takes place after the two tapes have been applied; so that the layers become fused into an integral structure. Sintering may be brought about under the conditions previously described.
  • non-porous non-expanded material has good electrical (particularly dielectric) properties; whilst the porous expanded material (whether compressed after expansion or not) has good mechanical properties (particularly cut-through resistance) . Surprisingly these properties are retained in the two-layer insulated electrical conductor notwithstanding sintering, so that an insulating layer having both good mechanical and electrical properties is obtained.
  • Either the porous or the non-porous layer may be adjacent the wire. Placing the non-porous layer adjacent the wire facilitates stripping of the wire when a connection is to be made. Placing the non-porous layer uppermost allows better overprinting (e.g. for colour coding) .
  • more than two layers of material may be used, for example non-porous/porous/non-porous which provides good stripping and printing characteristics.
  • one or more porous or non-porous layers of the material of the present invention may be wrapped together with one or more layers of conventional expanded or non-expanded PTFE tape prior to sintering.
  • the combination of layers of non-porous composite material with conventional expanded PTFE; and the combination of layers porous composite material with non-expanded PTFE may be used.
  • Figure 1 shows a wire constructio .
  • the extrudate of thickness 0.035 inch (890 microns) was then calendered down to 0.004 inch (101 microns) in three stages, using rollers heated to approximately 50°C.
  • the 0.004" tape was slit and wrapped on to 22 A G (American Wire Gauge) 19 strand silver plated electrical wire conductor, to an insulation wall thickness of 0.008" (200 microns) and sintered in air at 400°C for 0.5 minute.
  • Sample A 22 AWG, 19 strand, silver plated copper conductor with 0.008" wall of PTFE and TFE/PPVE blended insulation material, (according to Example 1) .
  • Sample B 22 AWG, 19 strand, silver plated copper conductor with 0.008" wall of PTFE insulation.
  • the powder/lubricant mixture was then compressed into a 4 inch pellet. Tape of thickness 0.003" (75 microns) was made from the resultant pellet by a similar method to that described in Example 1.
  • the solids, in particulate form, were lubricated with mineral spirits (19% by weight) and pelletized under vacuum.
  • the pellets were aged at 49°C for about 24 hours, and were then extruded into tape.
  • the tape was calendared to a thickness of 16.5 mil. and then dried to remove lubricant.
  • the dried tape was stretched in three steps. In the first stretch step, the tape was expanded longitudinally 93% (1.93 to 1) at 270°C at an output rate of 105 feet per minute. In the second step, the tape was expanded longitudinally at a rate of 20:1 at 290 ⁇ C at an output rate of 3.8 feet per minute. In the third step, the tape was expanded longitudinally at a ratio of 2:1 at 325 ⁇ C at an output of 75 feet per minute.
  • the resulting porous tape was then subjected to heat at 330 ⁇ C for about 6 seconds.
  • the bulk density was 2.0 gm/cc.
  • Example 3 The procedure of Example 3 was followed, except that in the first stretch step the stretch was at 1.9 to 1 instead of 1.93 to 1, and in the second stretch step the temperature was 300°C, and, in the third stretch step, the temperature was 360"C.
  • the tape was not compressed.
  • the resulting density was 0.7 gm/cc.
  • the insulated wire was then heat treated in air at 350 ⁇ C for 15 minutes, to fuse the insulation material.
  • the resultant wire was tested for dynanmic cut-through resistance according to the test method given in BS G 230.
  • BS G 230 (British Standard Group 230) is a test specification for general requirements for aircraft electrical cables. Test results are given in Table 2. Table 2.
  • the expanded tape made by the method given in Example 3 was slit and a 0.15mm thick layer (0.1mm post-sinter) was wrapped (layer A) on to 20 AWG (American Wire Gauge) 19 strand nickel plated copper conductor (C) .
  • Tape made by the method given in Example 2 was slit and then a 0.20mm thick layer (0.15mm post-sinter) was counter-wrapped (layer B) on the above insulated wire (See Figure 1) .
  • Counter-wrapping means that the tapes were wound as spirals of opposite hand.
  • Example 3 The resultant composite wire was then sintered in air at 400*C for 1.5 minutes.
  • the insulation had a final post-sinter thickness of 0.25mm.
  • Similar insulated wires were made with only the tape manufactured as in Example 3 or Example 4.
  • samples of conductor were insulated with standard PTFE or with TFE/PPVE jackets (Samples 1 and 2 respectively) .
  • the overall diameter of all samples was maintained at 1.5mm, resulting in similar wall thicknesses to allow the samples to be compared with one another.
  • Sample 1 20AWG, 19 strand, nickel plated copper conductor with 0.25mm wall of PTFE insulation.
  • Sample 2 20AWG, 19 strand, nickel plated copper conductor with 0.25mm wall of TFE/PPVE insulation.
  • Sample 4 20AWG, 19 strand, nickel plated copper conductor with 0.25mm wall of (expanded and densified) PTFE and TFE/PPVE blended insulation material (according to Example 3).
  • Sample 5 5 KV From these test results it is apparent that Sample 5, containing the dual counter-wrapped tapes manufactured by the methods given in Examples 2 and 3, has improved electrical properties with respect to voltage withstand characteristics over and above that of Sample 4.
  • Example 8 expanded/non-porous dual wrap
  • Expanded tape made by the method given in Example 3 was slit and a 50 microns thick (post-sinter thickness) layer (A) was wrapped onto 20AWG (American Wire Gauge) 19 strand nickel plated copper conductor (C) ..
  • the resultant composite wire was then fused by heat treatment in air at 350°C for 20 minutes.
  • Figures of 113 - 151 cycles to failure (8 Newton load) , and 110 - 130 Newtons were obtained when tested respectively, at room temperature, for scrape abrasion and dynamic cut-through resistance, according to Test Methods 30 and 26 given in BS G 230.
  • Tape made by the method given in Example 2 was slit and a 150 microns thick (post-sinter thickness) layer (A) was wrapped onto 20AWG (American Wire Gauge) 19 strand nickel plated copper conductor (C) .
  • Expanded tape made by the method given in Example 3 was slit and a 50 microns thick (post-sinter thickness) layer (8) was counter-wrapped on the above insulated wire.
  • the resultant composite wire was then fused by heat-treatment in air for 1.5 minutes at 400"C followed by 20 minutes at 350"C.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Organic Insulating Materials (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Insulating Bodies (AREA)

Abstract

Matériau composite d'isolation électrique comportant un mélange intime de (a) de 5 à 90 % en poids d'un copolymère thermoplastique de tétrafluoroéthylène et de perfluoro (propyle vinyle éther); et (b) de 90 à 5 % en poids de polytétrafluoroéthylène (PTFE) de type dispersion coagulée, ou de PTFE expansé poreux. Un ruban constitué du matériau composite peut être non poreux ou expansé et poreux. On enroule le ruban autour d'un conducteur (C) et on le fritte à une température comprise entre 320 et 450 °C. Une configuration à deux rubans enroulés possédant des couches (A, B) à la fois de ruban expansé poreux et de ruban non poreux assure d'excellentes caractéristiques de résistance dynamique aux coupures et aux éraflures.
PCT/GB1991/000661 1990-04-27 1991-04-26 Materiau d'isolation electrique WO1991017551A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP91908818A EP0526556B1 (fr) 1990-04-27 1991-04-26 Materiau d'isolation electrique
DE69130062T DE69130062T2 (de) 1990-04-27 1991-04-26 Elektrisches isolationsmaterial
GB9219772A GB2261668B (en) 1990-04-27 1992-09-18 Electrical insulating material

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US51530290A 1990-04-27 1990-04-27
GB909009407A GB9009407D0 (en) 1990-04-27 1990-04-27 Electrical insulating material
US515,302 1990-04-27
GB9009407.9 1990-04-27

Publications (1)

Publication Number Publication Date
WO1991017551A1 true WO1991017551A1 (fr) 1991-11-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/000661 WO1991017551A1 (fr) 1990-04-27 1991-04-26 Materiau d'isolation electrique

Country Status (6)

Country Link
EP (2) EP0526556B1 (fr)
JP (1) JP3263071B2 (fr)
DE (1) DE69130062T2 (fr)
ES (1) ES2122972T3 (fr)
GB (1) GB2261668B (fr)
WO (1) WO1991017551A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492186A2 (fr) * 1990-12-21 1992-07-01 Kabelwerke Reinshagen GmbH Procédé et dispositif de fabrication d'une ligne électrique isolée d'un fluorocarbone
WO1993020563A1 (fr) * 1992-04-03 1993-10-14 W.L. Gore & Associates (Uk) Ltd. Cable-ruban
US5500038A (en) * 1994-08-30 1996-03-19 W. L. Gore & Associates, Inc. Non-particulating compact adsorbent filter
AU688404B2 (en) * 1994-09-02 1998-03-12 W.L. Gore & Associates, Inc. Porous polytetrafluoroethylene compositions
US6436533B1 (en) 2000-07-27 2002-08-20 E. I. Du Pont De Nemours And Company Melt spun fibers from blends of poly(tetrafluoroethylene) and poly(tetrafluoroethylene-co-perfluoro-alkylvinyl ether)
CN1294197C (zh) * 1996-09-19 2007-01-10 W·L·戈尔有限公司 包含含氟聚合物和热塑性塑料的共连续共混物的制品
WO2017132500A1 (fr) 2016-01-28 2017-08-03 Rogers Corporation Câbles et fils enroulés solides composites à base de fluoropolymère
US10066033B2 (en) 2013-11-08 2018-09-04 Saint-Gobain Performance Plastics Corporation Articles containing PTFE having improved dimensional stability particularly over long lengths, methods for making such articles, and cable/wire assemblies containing such articles
US11009669B2 (en) 2017-06-15 2021-05-18 Corning Research & Development Corporation Distribution cabling system

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5560986A (en) * 1990-04-27 1996-10-01 W. L. Gore & Associates, Inc. Porous polytetrafluoroethylene sheet composition
GB9606818D0 (en) * 1996-03-30 1996-06-05 Gore W L & Ass Uk Granular-type modified polytetrafluoroethlyene dispersions and fused articles prepared therefrom (Case A)
DE10201833B4 (de) * 2002-01-18 2012-06-21 Hew-Kabel Gmbh Verfahren zur Herstellung eines Wickelbandes aus ungesintertem Polytetrafluorethylen
US20030211264A1 (en) * 2002-05-09 2003-11-13 Farnsworth Ted Ray Expanded polytetrafluoroethylene (ePTFE)-reinforced perfluoroelastomers (FFKM)
US7732531B2 (en) 2003-08-25 2010-06-08 Daikin Industries, Ltd. Molded object process for producing the same product for high-frequency signal transmission and high-frequency transmission cable
JP7044802B2 (ja) 2017-04-04 2022-03-30 ダブリュ．エル．ゴア アンド アソシエーツ，ゲゼルシャフト ミット ベシュレンクテル ハフツング 強化されたエラストマー及び統合電極を含む誘電複合体
JP2020064801A (ja) * 2018-10-18 2020-04-23 本田技研工業株式会社 ステータ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3484503A (en) * 1967-06-19 1969-12-16 Du Pont Blends of fluorinated polymers
US4128693A (en) * 1975-09-09 1978-12-05 International Telephone And Telegraph Corporation Wire coated with fluorocarbon blend
EP0010152A1 (fr) * 1978-09-16 1980-04-30 Hoechst Aktiengesellschaft Dispersion aqueuse de polymères fluorés ayant des propriétés filmogènes améliorées
US4454249A (en) * 1981-08-28 1984-06-12 Junkosha Co., Ltd. Reinforced plastics with porous resin fragments
EP0138524A1 (fr) * 1983-10-07 1985-04-24 RAYCHEM CORPORATION (a Delaware corporation) Compositions de fluoropolymères permettant leur travail à l'état fondu

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA962021A (en) * 1970-05-21 1975-02-04 Robert W. Gore Porous products and process therefor
JPS601891B2 (ja) * 1981-08-28 1985-01-18 株式会社 潤工社 発泡プラスチックの製造方法
JPS62260849A (ja) * 1986-04-11 1987-11-13 Daikin Ind Ltd 熱溶融性フツ素樹脂の顆粒状粉末およびその製造法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3484503A (en) * 1967-06-19 1969-12-16 Du Pont Blends of fluorinated polymers
US4128693A (en) * 1975-09-09 1978-12-05 International Telephone And Telegraph Corporation Wire coated with fluorocarbon blend
EP0010152A1 (fr) * 1978-09-16 1980-04-30 Hoechst Aktiengesellschaft Dispersion aqueuse de polymères fluorés ayant des propriétés filmogènes améliorées
US4454249A (en) * 1981-08-28 1984-06-12 Junkosha Co., Ltd. Reinforced plastics with porous resin fragments
EP0138524A1 (fr) * 1983-10-07 1985-04-24 RAYCHEM CORPORATION (a Delaware corporation) Compositions de fluoropolymères permettant leur travail à l'état fondu

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492186A3 (en) * 1990-12-21 1992-11-25 Kabelwerke Reinshagen Gmbh Process and device for manufacturing a fluorocarbon insulated electrical line
EP0492186A2 (fr) * 1990-12-21 1992-07-01 Kabelwerke Reinshagen GmbH Procédé et dispositif de fabrication d'une ligne électrique isolée d'un fluorocarbone
WO1993020563A1 (fr) * 1992-04-03 1993-10-14 W.L. Gore & Associates (Uk) Ltd. Cable-ruban
US5635677A (en) * 1992-04-03 1997-06-03 W. L. Gore & Associates, Inc. Series of parallel electrical conductors held together by interwoven braiding
US5500038A (en) * 1994-08-30 1996-03-19 W. L. Gore & Associates, Inc. Non-particulating compact adsorbent filter
AU688404B2 (en) * 1994-09-02 1998-03-12 W.L. Gore & Associates, Inc. Porous polytetrafluoroethylene compositions
CN1294197C (zh) * 1996-09-19 2007-01-10 W·L·戈尔有限公司 包含含氟聚合物和热塑性塑料的共连续共混物的制品
US6436533B1 (en) 2000-07-27 2002-08-20 E. I. Du Pont De Nemours And Company Melt spun fibers from blends of poly(tetrafluoroethylene) and poly(tetrafluoroethylene-co-perfluoro-alkylvinyl ether)
US10066033B2 (en) 2013-11-08 2018-09-04 Saint-Gobain Performance Plastics Corporation Articles containing PTFE having improved dimensional stability particularly over long lengths, methods for making such articles, and cable/wire assemblies containing such articles
US10472432B2 (en) 2013-11-08 2019-11-12 Saint-Gobain Performance Plastics Corporation Articles containing PTFE having improved dimensional stability particularly over long lengths, methods for making such articles, and cable/wire assemblies containing such articles
WO2017132500A1 (fr) 2016-01-28 2017-08-03 Rogers Corporation Câbles et fils enroulés solides composites à base de fluoropolymère
KR20180109077A (ko) * 2016-01-28 2018-10-05 로저스코포레이션 플루오로폴리머 복합 필름 래핑된 와이어들 및 케이블들
EP3408093A4 (fr) * 2016-01-28 2019-08-28 Rogers Corporation Câbles et fils enroulés solides composites à base de fluoropolymère
KR102212356B1 (ko) 2016-01-28 2021-02-03 로저스코포레이션 플루오로폴리머 복합 필름 래핑된 와이어들 및 케이블들
US11009669B2 (en) 2017-06-15 2021-05-18 Corning Research & Development Corporation Distribution cabling system

Also Published As

Publication number Publication date
EP0526556A1 (fr) 1993-02-10
GB2261668B (en) 1995-01-11
GB2261668A (en) 1993-05-26
GB9219772D0 (en) 1992-11-11
DE69130062T2 (de) 1999-04-08
JP3263071B2 (ja) 2002-03-04
EP0526556B1 (fr) 1998-08-26
EP0521588A3 (en) 1993-09-08
JPH05509433A (ja) 1993-12-22
ES2122972T3 (es) 1999-01-01
EP0521588A2 (fr) 1993-01-07
DE69130062D1 (de) 1998-10-01

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