JPS5450891A - Plastic insulated wire manufactring process - Google Patents

Plastic insulated wire manufactring process

Info

Publication number
JPS5450891A
JPS5450891A JP11715677A JP11715677A JPS5450891A JP S5450891 A JPS5450891 A JP S5450891A JP 11715677 A JP11715677 A JP 11715677A JP 11715677 A JP11715677 A JP 11715677A JP S5450891 A JPS5450891 A JP S5450891A
Authority
JP
Japan
Prior art keywords
die
inside diameter
manufactring
plastic
insulated wire
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
JP11715677A
Other languages
Japanese (ja)
Other versions
JPS6040647B2 (en
Inventor
Tsuyoshi Togawa
Setsuya Isshiki
Mitsusachi Nakamoto
Toshio Niwa
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.)
Fujikura Ltd
Original Assignee
Fujikura 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 Fujikura Ltd filed Critical Fujikura Ltd
Priority to JP52117156A priority Critical patent/JPS6040647B2/en
Publication of JPS5450891A publication Critical patent/JPS5450891A/en
Publication of JPS6040647B2 publication Critical patent/JPS6040647B2/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
    • 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
    • B29C48/06—Rod-shaped
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)

Abstract

PURPOSE:To uniformalize the distortion and density of sheathe and sharply improve the breakdown voltage of an insulator by reducing the inside diameter of an extruder die and then enlarging it. CONSTITUTION:A plastic passageway 5' consisting of a nipple 2' and a die 3' is made narrower as it goes near the outlet end and enlarged near the end. For example, the value of the enlarged section is set to (a<2>-d<2>)/(b<2>-c<2>). Where, Inside diameter of the die at the outlet end 6 of a plastic passageway: a, Minimum inside diameter section of the die: b, Outside diameter of the tip section of the nipple 2': c, Outside diameter of the conductors 1 of wires and cables: d, This permits aquisition of the minimum value of the inner distortion and density variation and deviation in extruded plastic insulators and wires of which breakdown voltage of the insulator is sharply improved.
JP52117156A 1977-09-29 1977-09-29 Manufacturing method of plastic insulated wire Expired JPS6040647B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52117156A JPS6040647B2 (en) 1977-09-29 1977-09-29 Manufacturing method of plastic insulated wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52117156A JPS6040647B2 (en) 1977-09-29 1977-09-29 Manufacturing method of plastic insulated wire

Publications (2)

Publication Number Publication Date
JPS5450891A true JPS5450891A (en) 1979-04-21
JPS6040647B2 JPS6040647B2 (en) 1985-09-12

Family

ID=14704834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52117156A Expired JPS6040647B2 (en) 1977-09-29 1977-09-29 Manufacturing method of plastic insulated wire

Country Status (1)

Country Link
JP (1) JPS6040647B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3030367U (en) * 1996-04-18 1996-10-22 崇 足立 Horizontal material scaffolding for building

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5282965A (en) * 1975-12-30 1977-07-11 Fujikura Ltd Extruding crosshead

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5282965A (en) * 1975-12-30 1977-07-11 Fujikura Ltd Extruding crosshead

Also Published As

Publication number Publication date
JPS6040647B2 (en) 1985-09-12

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