JPS5496789A - Preparation of high foaming polyolefine insulated wire - Google Patents

Preparation of high foaming polyolefine insulated wire

Info

Publication number
JPS5496789A
JPS5496789A JP270378A JP270378A JPS5496789A JP S5496789 A JPS5496789 A JP S5496789A JP 270378 A JP270378 A JP 270378A JP 270378 A JP270378 A JP 270378A JP S5496789 A JPS5496789 A JP S5496789A
Authority
JP
Japan
Prior art keywords
foaming
polyolefine
insulated wire
die
layer
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
JP270378A
Other languages
Japanese (ja)
Other versions
JPS5811047B2 (en
Inventor
Yoichi Suzuki
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP53002703A priority Critical patent/JPS5811047B2/en
Priority to AU42334/78A priority patent/AU531473B2/en
Priority to DE2853626A priority patent/DE2853626C2/en
Priority to CA318,075A priority patent/CA1124950A/en
Priority to GB7848778A priority patent/GB2013960B/en
Priority to FR7835374A priority patent/FR2412149A1/en
Publication of JPS5496789A publication Critical patent/JPS5496789A/en
Publication of JPS5811047B2 publication Critical patent/JPS5811047B2/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
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
    • B29C44/322—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables
    • 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
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
    • 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
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
    • H01B7/2855—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable using foamed plastic
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)
  • Insulated Conductors (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)

Abstract

PURPOSE:To better electric characteristics while improving mechanical strength, by producting an insulated wire by foaming after simultaneously covering a conductor by extruding a foaming insulating layer and a non-foaming layer. CONSTITUTION:A conductor 1 going out from a nipple 2 is penetrated to a double die manufactured by combining a die 5 for a foaming insulating layer and a die 7 foa a non-foaming layer on a die holder 6, and covered with a polyolefine material 3 for foaming and a polyolefine material 4 for non-foaming by simultaneously extruding the material 3 and the material 4. And a high foaming polyolefine insulated wire is obtained by foaming polyolefine for foaming. Polyolefine materials for foaming and for non-foaming are completely unified because both are under melted conditions, thus improving mechanical strength. Polyethylene and polypropylene with not les than 55% swelling ratio are used as high foaming polyolefine. Polyethylene and polypropylene are utilized as the non-foaming layer.
JP53002703A 1977-12-16 1978-01-17 Manufacturing method of highly foamed polyolefin insulated wire Expired JPS5811047B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP53002703A JPS5811047B2 (en) 1978-01-17 1978-01-17 Manufacturing method of highly foamed polyolefin insulated wire
AU42334/78A AU531473B2 (en) 1977-12-16 1978-12-08 Foamed plastic insulated wire
DE2853626A DE2853626C2 (en) 1977-12-16 1978-12-12 Wire insulated with a foamed plastic and process for its manufacture
CA318,075A CA1124950A (en) 1977-12-16 1978-12-15 Foamed plastic insulated wire and method for producing the same
GB7848778A GB2013960B (en) 1977-12-16 1978-12-15 Foamed plastics insulated wire and method for producing the same
FR7835374A FR2412149A1 (en) 1977-12-16 1978-12-15 METAL WIRE INSULATED BY EXPANDED PLASTIC AND ITS MANUFACTURING

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53002703A JPS5811047B2 (en) 1978-01-17 1978-01-17 Manufacturing method of highly foamed polyolefin insulated wire

Publications (2)

Publication Number Publication Date
JPS5496789A true JPS5496789A (en) 1979-07-31
JPS5811047B2 JPS5811047B2 (en) 1983-03-01

Family

ID=11536639

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53002703A Expired JPS5811047B2 (en) 1977-12-16 1978-01-17 Manufacturing method of highly foamed polyolefin insulated wire

Country Status (1)

Country Link
JP (1) JPS5811047B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6210804A (en) * 1985-07-08 1987-01-19 三菱電線工業株式会社 Highly foaming crosslinked polyolefin covered cable
JPS647715U (en) * 1987-07-03 1989-01-17

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4644497B2 (en) * 2005-01-25 2011-03-02 株式会社フジクラ coaxial cable

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50149758A (en) * 1974-05-23 1975-12-01

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50149758A (en) * 1974-05-23 1975-12-01

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6210804A (en) * 1985-07-08 1987-01-19 三菱電線工業株式会社 Highly foaming crosslinked polyolefin covered cable
JPS647715U (en) * 1987-07-03 1989-01-17

Also Published As

Publication number Publication date
JPS5811047B2 (en) 1983-03-01

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