FR2299456A1 - Mica paper of improved strength - comprises scrap mica mixed with cellulose and impregnated with resin - Google Patents

Mica paper of improved strength - comprises scrap mica mixed with cellulose and impregnated with resin

Info

Publication number
FR2299456A1
FR2299456A1 FR7602096A FR7602096A FR2299456A1 FR 2299456 A1 FR2299456 A1 FR 2299456A1 FR 7602096 A FR7602096 A FR 7602096A FR 7602096 A FR7602096 A FR 7602096A FR 2299456 A1 FR2299456 A1 FR 2299456A1
Authority
FR
France
Prior art keywords
mica
impregnated
resin
cellulose
paper
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
FR7602096A
Other languages
French (fr)
Other versions
FR2299456B1 (en
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.)
Von Roll Schweiz AG
Original Assignee
Schweizerische Isola Werke AG
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=4199932&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FR2299456(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Schweizerische Isola Werke AG filed Critical Schweizerische Isola Werke AG
Publication of FR2299456A1 publication Critical patent/FR2299456A1/en
Application granted granted Critical
Publication of FR2299456B1 publication Critical patent/FR2299456B1/fr
Granted legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/36—Inorganic fibres or flakes
    • D21H13/38—Inorganic fibres or flakes siliceous
    • D21H13/44—Flakes, e.g. mica, vermiculite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Inorganic Insulating Materials (AREA)
  • Organic Insulating Materials (AREA)

Abstract

Mica paper having a resistance to tearing sufficiently high to allow its use without support, and with an improved porosity and ability to impregnated, compared with ordinary mica paper, contains apart from mica 10-50 wt. % cellulose fibres. By mixing the mica with cellulose fibres, a paper sheet is obtd. having sufficient strength for its subsequent transformation, permeability to air and impregnability to resin without solvent to a high level. The tear strength is so high that it is sufficient for the coiling and it is superfluous to add any support.
FR7602096A 1975-01-28 1976-01-27 Mica paper of improved strength - comprises scrap mica mixed with cellulose and impregnated with resin Granted FR2299456A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH99275A CH589174A5 (en) 1975-01-28 1975-01-28

Publications (2)

Publication Number Publication Date
FR2299456A1 true FR2299456A1 (en) 1976-08-27
FR2299456B1 FR2299456B1 (en) 1979-08-24

Family

ID=4199932

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7602096A Granted FR2299456A1 (en) 1975-01-28 1976-01-27 Mica paper of improved strength - comprises scrap mica mixed with cellulose and impregnated with resin

Country Status (8)

Country Link
JP (1) JPS51100300A (en)
BE (1) BE837929A (en)
CH (1) CH589174A5 (en)
CS (1) CS183835B2 (en)
FR (1) FR2299456A1 (en)
IN (1) IN142410B (en)
PL (1) PL112572B1 (en)
RO (1) RO84974B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR829889A (en) * 1936-11-26 1938-07-08 Siemens Ag Process for manufacturing a paper intended in particular for the insulation of electric cables
SU108343A1 (en) * 1954-04-17 1956-11-30 К.А. Андрианов The method of obtaining electrically insulating mlyudinitovyh papers
DE2151753A1 (en) * 1970-10-21 1972-04-27 Asea Ab Coil for insertion in the slots of a stator or rotor of an electrical machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR829889A (en) * 1936-11-26 1938-07-08 Siemens Ag Process for manufacturing a paper intended in particular for the insulation of electric cables
SU108343A1 (en) * 1954-04-17 1956-11-30 К.А. Андрианов The method of obtaining electrically insulating mlyudinitovyh papers
DE2151753A1 (en) * 1970-10-21 1972-04-27 Asea Ab Coil for insertion in the slots of a stator or rotor of an electrical machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, VOLUME 52, NO. 8, AVRIL 25, 1958, COLUMBUS, OHIO, USA. A.D. SHAPIRO ET AL: "ELECTRIC-INSULATING MICACEOUS PAPER", ABREGE NO. 6794B, CITE SU-A1- 108 343 *

Also Published As

Publication number Publication date
CH589174A5 (en) 1977-06-30
FR2299456B1 (en) 1979-08-24
BE837929A (en) 1976-07-27
RO84974A (en) 1984-08-17
JPS51100300A (en) 1976-09-04
IN142410B (en) 1977-07-02
PL112572B1 (en) 1980-10-31
CS183835B2 (en) 1978-07-31
RO84974B (en) 1984-09-30

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Legal Events

Date Code Title Description
ST Notification of lapse