GB525764A - Improvements in and relating to methods of insulating electric conductors - Google Patents

Improvements in and relating to methods of insulating electric conductors

Info

Publication number
GB525764A
GB525764A GB6567/39A GB656739A GB525764A GB 525764 A GB525764 A GB 525764A GB 6567/39 A GB6567/39 A GB 6567/39A GB 656739 A GB656739 A GB 656739A GB 525764 A GB525764 A GB 525764A
Authority
GB
United Kingdom
Prior art keywords
extrusion
covering
oven
relating
methods
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
GB6567/39A
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 GB525764A publication Critical patent/GB525764A/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
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Insulating Materials (AREA)
  • Insulated Conductors (AREA)

Abstract

525,764. Moulding synthetic resins. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 28, 1939, No. 6567. Convention date, March 1, 1938. [Class 87 (ii)] To prevent the cracking at elevated temperatures of coverings of synthetic resinous compositions that have been extruded on to conductors, the covering is subjected immediately after extrusion for a short time to a temperature higher than that of the extrusion to cause the internal tension in the covering to decay. The covered conductor may pass from the extrusion machine through an oven. In an example, a conductor heated to 200‹F. is coated with hot plasticized polyvinyl chloride composition by extrusion and passes through an oven heated to 700‹F. to 900‹F. for a few seconds and is thus cooled. The invention may also be applied to the annealing of polyvinyl acetate, polyisobutylene, polyethylacrylate, rubber hydrochloride, polystyrene &c. Specification 437,662 is referred to.
GB6567/39A 1938-03-01 1939-02-28 Improvements in and relating to methods of insulating electric conductors Expired GB525764A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US525764XA 1938-03-01 1938-03-01

Publications (1)

Publication Number Publication Date
GB525764A true GB525764A (en) 1940-09-04

Family

ID=21978495

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6567/39A Expired GB525764A (en) 1938-03-01 1939-02-28 Improvements in and relating to methods of insulating electric conductors

Country Status (1)

Country Link
GB (1) GB525764A (en)

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