GB260210A - Improvements in and relating to insulating compositions - Google Patents

Improvements in and relating to insulating compositions

Info

Publication number
GB260210A
GB260210A GB12579/26A GB1257926A GB260210A GB 260210 A GB260210 A GB 260210A GB 12579/26 A GB12579/26 A GB 12579/26A GB 1257926 A GB1257926 A GB 1257926A GB 260210 A GB260210 A GB 260210A
Authority
GB
United Kingdom
Prior art keywords
paper
roll
impregnating
shellac
pool
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.)
Expired
Application number
GB12579/26A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB260210A publication Critical patent/GB260210A/en
Expired 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
    • H01B3/06—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances asbestos

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

260,210. British Thomson-Houston Co., Ltd., (Assignees of Weldon, J. J.). Oct. 23, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Compound paper; paper, treating with special materials.- Laminated material, particularly for electric insulation, is made by first impregnating sheets of absorbent fibrous material such as paper with a substance of high insulating properties such as wood pitch, asphaltum, copal, or a suitable gum, and then uniting the sheets with a binder such as shellac or a synthetic resin. The material to be impregnated, for example kraft paper, is unwound from a roll 1, passes over a heated plate 2, and is wound on a second roll 3. Powdered or molten impregnating material is supplied from a hopper 4, which may be provided with feed mechanism 6. Pressure rollers 7, 8, 9 bear against the roll 3, the rollers 7, 8 being preferably heated. The impregnating material forms a pool 10 where the roller 7 presses against the roll 3. Means such as air jets may be used to confine the pool within the limits of the paper. The roll of impregnated paper may be rolled to form tubes in the same machine, or bv the combined coating and rolling machine described in Specification 190,838, [Class 140, Waterproof &c. fabrics], a binder of shellac. synthetic resin, or the like being interposed between the layers.
GB12579/26A 1925-10-23 1926-05-17 Improvements in and relating to insulating compositions Expired GB260210A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US260210XA 1925-10-23 1925-10-23

Publications (1)

Publication Number Publication Date
GB260210A true GB260210A (en) 1927-02-10

Family

ID=21829395

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12579/26A Expired GB260210A (en) 1925-10-23 1926-05-17 Improvements in and relating to insulating compositions

Country Status (1)

Country Link
GB (1) GB260210A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478181A (en) * 1943-07-28 1949-08-09 Sonoco Products Co Fibrous conduit and method and composition for same
US2489170A (en) * 1944-03-07 1949-11-22 Stancal Asphalt & Bitumuls Com Adhesive composition for paper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478181A (en) * 1943-07-28 1949-08-09 Sonoco Products Co Fibrous conduit and method and composition for same
US2489170A (en) * 1944-03-07 1949-11-22 Stancal Asphalt & Bitumuls Com Adhesive composition for paper

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