GB754079A - Improvements in or relating to electric cables - Google Patents

Improvements in or relating to electric cables

Info

Publication number
GB754079A
GB754079A GB31917/54A GB3191754A GB754079A GB 754079 A GB754079 A GB 754079A GB 31917/54 A GB31917/54 A GB 31917/54A GB 3191754 A GB3191754 A GB 3191754A GB 754079 A GB754079 A GB 754079A
Authority
GB
United Kingdom
Prior art keywords
conductor
thermoplastic
coating
heated
thermoplastic material
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
GB31917/54A
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.)
Pirelli and C SpA
Original Assignee
Pirelli SpA
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 Pirelli SpA filed Critical Pirelli SpA
Publication of GB754079A publication Critical patent/GB754079A/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
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/14—Submarine cables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • 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

Abstract

754,079. Coating electric conductors with thermoplastic insulation. PIRELLI-SOC. PER AZIONI. Nov. 4, 1954 [Jan. 13, 1954], No. 31917/54. Class 87(2) In making submarine telegraph or submarine telephone cable, before the main coating of thermoplastic insulation is applied to the conductor 5 the later is heated and passed rightwards through a chamber 1, through which thermoplastic material flows leftwards under pressure and emerges at 7. The thermoplastic material " washes" the conductor and applies a preliminary thin coating of material thereto. The conductor may be a single solid wire. Alternatively the conductor may be a stranded conductor (swaged or not swaged), in which case 'air bubbles are washed off the conductor and thermoplastic material is forced into the interstices between the strands. The conductor 5 may be 45 mm. in diameter and the bores of the dies 3 and 4 4.7 and 4.6 mm. respectively. The conductor may be heated to a temperature 50-100‹C. greater than that of the thermoplastic material. The device shown in the drawing (which may be modified in that the screw may be replaced by another impeller, e.g. a gear pump) may be separate from, in series with or part of an extruder or other machine for applying the insulation proper. If the device shown is separate from the second machine the initially-coated conductor is heated a second time before 'passage through the second machine. The material for the " washed' coating may be guttapercha or polyethylene, and the material for the insulator proper may be the same or slightly different.
GB31917/54A 1954-01-13 1954-11-04 Improvements in or relating to electric cables Expired GB754079A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT754079X 1954-01-13

Publications (1)

Publication Number Publication Date
GB754079A true GB754079A (en) 1956-08-01

Family

ID=11315746

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31917/54A Expired GB754079A (en) 1954-01-13 1954-11-04 Improvements in or relating to electric cables

Country Status (3)

Country Link
DE (1) DE1028190B (en)
FR (1) FR1131440A (en)
GB (1) GB754079A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1728620A3 (en) * 2005-05-30 2007-12-12 Gramm Mogensen Holding A/S Arrangement for manufacturing a mult-pipe element

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE426536C (en) * 1924-07-23 1926-03-12 Norddeutsche Seekabelwerke Ag Method and device for compounding conductors for submarine cables
DE519228C (en) * 1927-11-06 1931-02-25 Electrical Res Prod Inc Method and apparatus for coating a core, e.g. B. the conductor, an electrical cable with a tough (viscous) material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1728620A3 (en) * 2005-05-30 2007-12-12 Gramm Mogensen Holding A/S Arrangement for manufacturing a mult-pipe element

Also Published As

Publication number Publication date
FR1131440A (en) 1957-02-21
DE1028190B (en) 1958-04-17

Similar Documents

Publication Publication Date Title
US3229012A (en) Method and apparatus for extruding laminar wall
GB1133603A (en) Shielded electrical cable
US3227786A (en) Method of jacketing telephone cables
GB811703A (en) Electric cables and method of and means for manufacturing same
GB725624A (en) Improvements in insulated electric wires and cables
GB570380A (en) Improvements in high voltage electric cables
GB754079A (en) Improvements in or relating to electric cables
GB943151A (en) Improvements in or relating to a method of insulating electric cables and conductingwires
GB977450A (en) Method and arrangement for baring electric ribbon cables and electric ribbon cable obtained with said method
GB711460A (en) Improvements in or relating to electric cables
SE8104399L (en) ELECTRICAL ELECTRICAL CABLE OF MULTIPLE CONDUCTOR AND SET FOR ITS MANUFACTURING
GB349105A (en) Improvements in or relating to submarine electric signalling cables
GB887029A (en) Internally fluted plastic cable sheaths
GB838580A (en) Methods and apparatus for colour coding electric conductors
GB835348A (en) Improvements in or relating to electric cables and methods of making them
GB766862A (en) Improvements in or relating to stranded conductors for electric cables
GB632022A (en) Improvements in the manufacture of electric cables
GB809868A (en) An improved electric conductor
GB719030A (en) An improved device for filling stranded electric conductors with compound
GB742091A (en) Method of and means for the impregnation of stranded electric conductors and cables or the like
GB1146659A (en) Improvements in electric cable
GB1283610A (en) A stranded electrical conductor
GB824657A (en) Improvements in electric cables and a method and apparatus for extruding core for electric cables
GB1006897A (en) Improvements in or relating to telecommunications cables
GB923906A (en) Improvements in or relating to insulated electrical conductors