EP1086470A1 - Verfahren zur herstellung eines glimmerbandes und erhaltenes produkt - Google Patents

Verfahren zur herstellung eines glimmerbandes und erhaltenes produkt

Info

Publication number
EP1086470A1
EP1086470A1 EP99928915A EP99928915A EP1086470A1 EP 1086470 A1 EP1086470 A1 EP 1086470A1 EP 99928915 A EP99928915 A EP 99928915A EP 99928915 A EP99928915 A EP 99928915A EP 1086470 A1 EP1086470 A1 EP 1086470A1
Authority
EP
European Patent Office
Prior art keywords
resin
mica
support
coating
solvent
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
EP99928915A
Other languages
English (en)
French (fr)
Other versions
EP1086470B1 (de
Inventor
Alain Jacques
No[L Mortier
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.)
COGEBI SA
Original Assignee
Compagnie Royale Asturienne des Mines
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8237058&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1086470(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Compagnie Royale Asturienne des Mines filed Critical Compagnie Royale Asturienne des Mines
Priority to EP99928915A priority Critical patent/EP1086470B1/de
Publication of EP1086470A1 publication Critical patent/EP1086470A1/de
Application granted granted Critical
Publication of EP1086470B1 publication Critical patent/EP1086470B1/de
Anticipated expiration legal-status Critical
Revoked 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
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/04—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances mica
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/251—Mica
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2852—Adhesive compositions
    • Y10T428/287—Adhesive compositions including epoxy group or epoxy polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2911—Mica flake
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2738—Coating or impregnation intended to function as an adhesive to solid surfaces subsequently associated therewith
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2738—Coating or impregnation intended to function as an adhesive to solid surfaces subsequently associated therewith
    • Y10T442/2746—Heat-activatable adhesive
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2926—Coated or impregnated inorganic fiber fabric
    • Y10T442/2951—Coating or impregnation contains epoxy polymer or copolymer or polyether
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2926—Coated or impregnated inorganic fiber fabric
    • Y10T442/2975—Coated or impregnated ceramic fiber fabric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2926—Coated or impregnated inorganic fiber fabric
    • Y10T442/2992—Coated or impregnated glass fiber fabric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3927—Including a paper or wood pulp layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3927—Including a paper or wood pulp layer
    • Y10T442/3935—Mica paper layer

Definitions

  • the present invention relates to the production of a micaceous product preferably in the form of a mica tape comprising a support coated with a solvent-free resin associated with a mica sheet.
  • the present invention relates to a process for producing a mica tape suitable for impregnation subsequent to the production process itself.
  • the present invention also relates to a new micaceous product.
  • micaceous products more specifically micaceous ribbons.
  • These micaceous ribbons are in the form of a support impregnated with a resin, for example epoxy, associated with a sheet of mica.
  • This mica sheet can be mica paper, possibly reinforced with a small amount of resin, for example epoxy.
  • the first family includes the ribbons called "saturated ribbons” or even “prepreg”, which are ribbons made from mica paper heavily impregnated with a resin of the Novolac type and having as support a glass fabric.
  • the resin content is usually between 30 and 40% of the total weight of the tape.
  • the epoxy resin is brought to stage B, that is to say that it has already undergone hardening. Then, this type of product can be wrapped on the part to be insulated and will then undergo a heat treatment of the order of 160 to 180 ° C.
  • Document JP-07149928 describes a product in the form of a conventionally produced saturated mica tape. It seems that a solvent-free epoxy resin is then used in the second phase of the production, that is to say after the tape is wrapped on the machine, in order to obtain adequate electrical insulation.
  • the document EP-A-0735071 describes a solvent-free resin composition optionally intended for the manufacture of a micaceous tape of saturated type, that is to say already completely impregnated and therefore having a relatively high resin content.
  • Document GB-A-2083849 describes a process for producing insulation tapes which consists in impregnating a mica support at room temperature using a solvent-free resin followed by attachment to a support and heating the assembly so as to reduce the viscosity of the resin, which will promote the deep impregnation of the mica paper. This will again give a ribbon of the "prepreg" type and therefore already heavily impregnated.
  • the second family includes the so-called ribbons
  • porous which have a relatively low resin content of the order of 4 and 10% by total weight of the ribbon. These ribbons are suitable for being impregnated later in the process for manufacturing said ribbons and will be subjected, after wrapping, to a "VPI (Vacuum Pressure Impregnation)" treatment, which allows impregnation with a resin usually without solvent, in a second phase.
  • the "VPI” treatment consists in immersing in the impregnation resin the copper parts wrapped with the porous mica tape, applying the vacuum in order to eliminate any inclusion of air; then the vacuum is cut off and a certain pressure is applied for several hours in order to make the post-impregnation resin penetrate into the mica insulation. The course of the entire post-impregnation process and the temperature of the resin are dictated by the nature of this resin, the thickness of the insulation to be impregnated and the porosity of the mica tape used.
  • Another possibility is to impregnate a sheet of mica with a liquid accelerator or a solution of a liquid or solid accelerator in a solvent with low boiling point, then sprinkle with a hardener-free powder varnish on the impregnated mica sheet, and then either impregnate a glass cloth with a liquid accelerator or a solution of a liquid accelerator or solid in a solvent with low boiling point by gluing the support thus obtained by an action of heat and pressure with the side of the sheet of fine mica sprinkled with powder varnish, or by gluing the felt serving as support by a pressure and heat action with the side of the thin mica sheet sprinkled with powder varnish.
  • the dusting of a varnish requires the use of a certain amount of it.
  • the varnish will tend, when it is sprinkled on the support, to pass through the meshes and to be found on both sides of the support.
  • the present invention aims to provide a method of manufacturing micaceous products suitable for impregnation which requires the use of a low level of resin.
  • the present invention aims to propose a technique which makes it possible to avoid the use of solvents for the preparation of micaceous products suitable for impregnation such as mica ribbons of porous type.
  • the present invention also aims to allow the production of such ribbons having increased flexibility while having sufficient or even increased adhesion qualities.
  • the present invention aims to propose, in the particular case of the realization of coiled ribbons, a process which avoids the problem of sticking between successive turns.
  • the present invention relates first of all to a process for producing a micaceous product suitable for impregnation, preferably in the form of a mica tape obtained by combining a support. and a mica sheet, characterized in that: - a resin or an adhesive or a mixture of resins without solvent is coated on the support or on the mica sheet using of coating rolls at a temperature for applying the coating, - the support is associated with the mica sheet, and
  • coating processing temperature it is necessary to understand the temperature to which the resin mixture without solvent is brought in order to be able to coat the support or the mica sheet. This temperature is usually between 40 and 200 ° C. This means that the resin must be in a non-solid form, that is to say in the more or less viscous or liquid state.
  • a pressure and temperature treatment is meant a treatment at a temperature between 40 and 200 ° C for a pressure between 0 and 20 bars in order to allow the support to be secured to the mica sheet.
  • resin intended for coating mention may be made of solvent-free epoxy resins, solvent-free silicone adhesives or any other solvent-free resin having a viscosity suitable for the temperatures at which the coating is used.
  • the support can be either a film or a fabric, or even a felt.
  • the mica sheet is preferably a conventional mica paper produced according to the usual stationery techniques.
  • This mica paper may be a 100% mica paper or optionally a mica paper previously reinforced by means of an impregnation resin, for example epoxy, by a conventional implementation process such as impregnation by coating optionally in a solvent medium.
  • an accelerator either into the resin used for coating, or during a prior step during the preparation of the mica sheet in the so-called impregnation resin, or even directly on the support or on the mica sheet itself.
  • the accelerator is then directly mixed with the resin.
  • an accelerator in the form of a nitrogenous compound such as an amine or an organometallic compound such as zinc naphthenate, or any other compound having the desired catalytic effect.
  • a second object of the present invention relates to a micaceous product suitable for impregnation which is preferably in the form of a strip of so-called porous mica and which comprises on the one hand a support impregnated by solvent-free coating of a resin and a sheet of mica, or else a sheet of mica impregnated by solvent-free coating of a resin and the support itself, these two elements being joined together.
  • the fabric will be a woven glass fiber fabric or silk, having a grammage of 20 to 50 g / m 2 .
  • the mica sheet, and preferably the mica paper, has a grammage of between 100 and
  • FIG. 1 represents a schematic view of the device intended to carry out the coating process according to the present invention.
  • FIG. 2 represents a schematic view of the second step of the process for producing a micaceous ribbon according to the present invention, which consists in securing the support to mica paper.
  • FIG. 3 represents a schematic description of a glass fabric impregnated by the technique described.
  • FIG. 1 represents a schematic view of a device intended to carry out the method according to the invention.
  • This device comprises on the one hand a coating station consisting essentially of several successive cylinders, and preferably four cylinders (1, 2, 3 and 4), which allow the coating of a very small amount of resin on the support .
  • This coating unit is followed by a lamination unit which brings the two elements, that is to say the mica sheet and the support, into contact, and which exerts on the assembly a pressure action and temperature as described in Figure 2.
  • This pressure action is carried out using two cylinders (5 and
  • a mica tape is produced by hot coating a glass fabric support with a solvent-free resin and the coated support is laminated on a mica paper.
  • the following materials are used: 1) An unmodified epoxy resin based on bisphenol A and epichlorohydrin. It is a solid resin at room temperature and free of solvent. This resin has an epoxy equivalent weight of between 350 and 400 g / equiv. and a viscosity at 90 ° C of the order of
  • the epoxy resin is preheated in an oven to 90 ° C.
  • the appropriate quantity is poured between the cylinders 1 and 2 of the coating stand described in FIG. 1.
  • the cylinders 1 and 3 of the coating stand have been preheated to 90 ° C and are maintained at this temperature for the duration of the coating.
  • the speeds of rotation and the spacing between the different cylinders of the coating stand are adjusted in order to obtain the transfer of a thin layer of resin from cylinder 2 to cylinder 3 and from cylinder 3 to cylinder 4.
  • B) The glass fabric is unwound and brought into tangential contact with the cylinder 4 of the coating stand as described in FIG. 1. The glass fabric entrains part of the resin located on the cylinder 4.
  • the characteristics of a mica tape thus produced are shown in Table I and compared to those of a tape manufactured by the conventional technique known as spraying in solvent medium (ribbon B). It is found that the ribbon A manufactured according to the process described above contains a resin content lower than the rate normally necessary for a ribbon B manufactured by the conventional spraying technique in solvent medium. In addition, the tape A has better flexibility, greater porosity and better tensile strength than the tape B. The tape A is also completely dry on the outside of the glass fabric since the resin is located only at the interface between the glass fabric and the mica paper, this characteristic limits the risks of sticking between turns of the wound ribbon.
  • Example 2 A mica tape is produced by hot coating using the same technique as described in Example 1. For this, the following materials are used:
  • An unmodified epoxy resin based on bisphenol A and epichlorohydrin It is a liquid resin of high viscosity at room temperature and free of solvent. This resin has an epoxy equivalent weight of between 235 and 265 g / equiv. and a viscosity at
  • the mica tape thus produced is extremely flexible and the adhesion between the polyester film and the mica paper is very good.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Insulating Bodies (AREA)
  • Laminated Bodies (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Reinforced Plastic Materials (AREA)
  • Inorganic Insulating Materials (AREA)
EP99928915A 1998-06-17 1999-06-17 Verfahren zum herstellen eines glimmerproduktes, das vorzugsweise in der form eines glimmerbandes erscheint, und erhaltenes produkt Revoked EP1086470B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99928915A EP1086470B1 (de) 1998-06-17 1999-06-17 Verfahren zum herstellen eines glimmerproduktes, das vorzugsweise in der form eines glimmerbandes erscheint, und erhaltenes produkt

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP98870136A EP0966001A1 (de) 1998-06-17 1998-06-17 Verfahren zur Herstellung eines Glimmerbandes und erhaltenes Produkt
EP98870136 1998-06-17
PCT/BE1999/000077 WO1999066515A1 (fr) 1998-06-17 1999-06-17 Procede de realisation d'un produit micace se presentant de preference sous la forme d'un ruban de mica et produit obtenu
EP99928915A EP1086470B1 (de) 1998-06-17 1999-06-17 Verfahren zum herstellen eines glimmerproduktes, das vorzugsweise in der form eines glimmerbandes erscheint, und erhaltenes produkt

Publications (2)

Publication Number Publication Date
EP1086470A1 true EP1086470A1 (de) 2001-03-28
EP1086470B1 EP1086470B1 (de) 2003-02-12

Family

ID=8237058

Family Applications (2)

Application Number Title Priority Date Filing Date
EP98870136A Withdrawn EP0966001A1 (de) 1998-06-17 1998-06-17 Verfahren zur Herstellung eines Glimmerbandes und erhaltenes Produkt
EP99928915A Revoked EP1086470B1 (de) 1998-06-17 1999-06-17 Verfahren zum herstellen eines glimmerproduktes, das vorzugsweise in der form eines glimmerbandes erscheint, und erhaltenes produkt

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP98870136A Withdrawn EP0966001A1 (de) 1998-06-17 1998-06-17 Verfahren zur Herstellung eines Glimmerbandes und erhaltenes Produkt

Country Status (9)

Country Link
US (1) US6699804B1 (de)
EP (2) EP0966001A1 (de)
JP (1) JP2002518220A (de)
CN (1) CN1145977C (de)
AT (1) ATE232644T1 (de)
AU (1) AU4593399A (de)
BR (1) BR9911853A (de)
DE (1) DE69905362T2 (de)
WO (1) WO1999066515A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10434755B2 (en) 2010-11-19 2019-10-08 Unifrax I, Llc Fire barrier layer and fire barrier film laminate

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7524557B2 (en) 2002-07-04 2009-04-28 Kabushiki Kaisha Toshiba Highly heat conductive insulating member, method of manufacturing the same and electromagnetic device
EP1530223B1 (de) * 2002-07-04 2009-02-04 Kabushiki Kaisha Toshiba Isolationselement mit hoher thermischer leitfähigkeit, verfahren zu dessen herstellung, elektromagnetische spule und elektromagnetische vorrichtung
JP4996086B2 (ja) * 2005-09-29 2012-08-08 株式会社東芝 マイカテープおよびこのマイカテープを用いた回転電機コイル
US20080026180A1 (en) * 2006-07-26 2008-01-31 Bush Robert L Impregnated inorganic paper and method for manufacturing the impregnated inorganic paper
US9676168B2 (en) 2010-11-19 2017-06-13 Lamart Corporation Fire barrier layer and fire barrier film laminate
US8568855B2 (en) * 2011-06-08 2013-10-29 Siemens Energy, Inc. Insulation materials having apertures formed therein
DE102011079489A1 (de) * 2011-07-20 2013-01-24 Siemens Aktiengesellschaft Verfahren zum Herstellen eines Bandes für ein elektrisches Isolationssystem
DE102011083228A1 (de) * 2011-09-22 2013-03-28 Siemens Aktiengesellschaft Isoliersysteme mit verbesserter Teilentladungsbeständigkeit, Verfahren zur Herstellung dazu
CN103700456B (zh) * 2014-01-02 2016-06-29 株洲时代电气绝缘有限责任公司 一种不使用有机溶剂的云母带生产方法
CN104532685A (zh) * 2014-11-24 2015-04-22 泉州泉港华博化工科技有限公司 一种高绝缘云母纸的制备方法
CN112677619A (zh) * 2020-12-29 2021-04-20 丹阳市沃德立电工材料有限公司 一种一体化云母带生产设备

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1665865B2 (de) * 1967-02-07 1971-11-25 Siemens AG, 1000 Berlin u. 8000 München Hochspannungsfestes isoliermaterial
FR1199942A (fr) * 1970-10-21 1959-12-17 Escher Wyss Soc Dispositif pour rendre étanche une machine où circule un fluide moteur susceptiblede contamination radioactive
GB2083849B (en) * 1980-09-12 1984-05-02 Ass Elect Ind The manufacture of electrical insulating tapes and sheets
US4702948A (en) * 1983-09-12 1987-10-27 Sieber Gadient Paul Self-adhesive tape with two-sided contact adhesive coating and method of producing the same
US4606785A (en) * 1984-11-15 1986-08-19 Westinghouse Electric Corp. Simplified method of making high strength resin bonded mica tape
FR2591793B1 (fr) * 1985-12-13 1988-08-12 Alsthom Ruban micace isolant electrique et anti-feu adhesif, notamment pour cable electrique ou a fibres optiques
US4661397A (en) * 1986-03-07 1987-04-28 Westinghouse Electric Corp. Polybutadiene bonded extremely flexible porous mica tape
US5256288A (en) * 1992-08-28 1993-10-26 Cer-Wat, Inc. Filtration medium including substrate-supported porous membrane and method for the manufacture thereof
DE4244298C2 (de) * 1992-12-28 2003-02-27 Alstom Isolierband und Verfahren zu seiner Herstellung
JP3046905B2 (ja) * 1993-11-26 2000-05-29 三菱電機株式会社 電気絶縁用プリプレグ
US5618891A (en) * 1995-03-29 1997-04-08 General Electric Co. Solventless resin composition having minimal reactivity at room temperature
US5912067A (en) * 1997-03-18 1999-06-15 Astral International S.A. Fabric particularly for mattresses and covers
US5787602A (en) * 1997-03-31 1998-08-04 Wangner Systems Corporation Dryer fabric with adhesive tacky surface for web

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9966515A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10434755B2 (en) 2010-11-19 2019-10-08 Unifrax I, Llc Fire barrier layer and fire barrier film laminate

Also Published As

Publication number Publication date
CN1305632A (zh) 2001-07-25
WO1999066515A1 (fr) 1999-12-23
EP1086470B1 (de) 2003-02-12
EP0966001A1 (de) 1999-12-22
BR9911853A (pt) 2001-03-20
JP2002518220A (ja) 2002-06-25
US6699804B1 (en) 2004-03-02
AU4593399A (en) 2000-01-05
DE69905362T2 (de) 2003-12-11
DE69905362D1 (de) 2003-03-20
CN1145977C (zh) 2004-04-14
ATE232644T1 (de) 2003-02-15

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