JPS6467832A - Manufacture of foaming plastic-insulated electric wire - Google Patents

Manufacture of foaming plastic-insulated electric wire

Info

Publication number
JPS6467832A
JPS6467832A JP62225480A JP22548087A JPS6467832A JP S6467832 A JPS6467832 A JP S6467832A JP 62225480 A JP62225480 A JP 62225480A JP 22548087 A JP22548087 A JP 22548087A JP S6467832 A JPS6467832 A JP S6467832A
Authority
JP
Japan
Prior art keywords
foaming
plastic
conductor
outer layer
crosshead
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
JP62225480A
Other languages
Japanese (ja)
Other versions
JP2508128B2 (en
Inventor
Masazumi Shimizu
Hideo Otsuki
Masahiro Abe
Koji Horii
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.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable 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 Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP62225480A priority Critical patent/JP2508128B2/en
Publication of JPS6467832A publication Critical patent/JPS6467832A/en
Application granted granted Critical
Publication of JP2508128B2 publication Critical patent/JP2508128B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B29C48/304—Extrusion nozzles or dies specially adapted for bringing together components, e.g. melts within the die
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)

Abstract

PURPOSE:To prevent the foaming gas from concentrating around a conductor from an inner layer and improve the foaming degree and the adhesion with the conductor by extrusion-covering the plastic not containing a foaming agent on the inner layer and the plastic containing a foaming agent on an outer layer simultaneously and foaming the outer layer. CONSTITUTION:Plastic extruding machines (I), (II) are connected to a crosshead 4, and the crosshead 4 is mainly constituted of a nipple (I) 5 and a nipple (II) 6. When a conductor C passes the crosshead 4, the plastic containing a foaming agent from the extruding machine (II) is covered as an outer layer at the same time. The plastic of the outer layer is foamed by the pressure change when it is taken to the outside via a die 7, and a foaming plastic-insulated electric wire is formed when it is subsequently cooled. The concentration of the foaming gas near the conductor is thereby prevented, and the foaming degree and the adhesion between the conductor and a foaming insulator can be improved.
JP62225480A 1987-09-09 1987-09-09 Method for manufacturing foamed plastic insulated wire Expired - Lifetime JP2508128B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62225480A JP2508128B2 (en) 1987-09-09 1987-09-09 Method for manufacturing foamed plastic insulated wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62225480A JP2508128B2 (en) 1987-09-09 1987-09-09 Method for manufacturing foamed plastic insulated wire

Publications (2)

Publication Number Publication Date
JPS6467832A true JPS6467832A (en) 1989-03-14
JP2508128B2 JP2508128B2 (en) 1996-06-19

Family

ID=16829981

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62225480A Expired - Lifetime JP2508128B2 (en) 1987-09-09 1987-09-09 Method for manufacturing foamed plastic insulated wire

Country Status (1)

Country Link
JP (1) JP2508128B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448508A (en) * 1990-06-14 1992-02-18 Hitachi Cable Ltd foam plastic insulated wire
JPH04229903A (en) * 1990-12-27 1992-08-19 Nippon Unicar Co Ltd High foam polyethylene insulation cable and manufacture thereof
WO2011048974A1 (en) * 2009-10-23 2011-04-28 株式会社フジクラ Foamed electric wire and transmission cable comprising same
WO2011048973A1 (en) * 2009-10-23 2011-04-28 株式会社フジクラ Foamed electric wire and transmission cable comprising same
JP2012507832A (en) * 2008-10-31 2012-03-29 ダイキン アメリカ インコーポレイティッド Foam wire
CN103101169A (en) * 2013-01-22 2013-05-15 张琪彬 Process for producing building plastic formwork by co-extrusion method and compound mould
JP2013532766A (en) * 2010-08-02 2013-08-19 スリーエム イノベイティブ プロパティズ カンパニー Peroxide curable fluoroelastomers containing modifiers and iodine or bromine end groups
CN103978621A (en) * 2014-05-20 2014-08-13 杭州乐荣电线电器有限公司 Four-motor physical foaming co-extrusion device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4518552B2 (en) * 2004-03-12 2010-08-04 株式会社フジクラ High frequency coaxial cable
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
JPS56118215A (en) * 1980-02-21 1981-09-17 Fujikura Ltd Method of manufacturing high foamable insulated wire

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56118215A (en) * 1980-02-21 1981-09-17 Fujikura Ltd Method of manufacturing high foamable insulated wire

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448508A (en) * 1990-06-14 1992-02-18 Hitachi Cable Ltd foam plastic insulated wire
JPH04229903A (en) * 1990-12-27 1992-08-19 Nippon Unicar Co Ltd High foam polyethylene insulation cable and manufacture thereof
JP2012507832A (en) * 2008-10-31 2012-03-29 ダイキン アメリカ インコーポレイティッド Foam wire
WO2011048974A1 (en) * 2009-10-23 2011-04-28 株式会社フジクラ Foamed electric wire and transmission cable comprising same
WO2011048973A1 (en) * 2009-10-23 2011-04-28 株式会社フジクラ Foamed electric wire and transmission cable comprising same
JP2011090920A (en) * 2009-10-23 2011-05-06 Fujikura Ltd Foamed electric wire and transmission cable having the same
JPWO2011048974A1 (en) * 2009-10-23 2013-03-07 株式会社フジクラ Foamed electric wire and transmission cable having the same
JP2013532766A (en) * 2010-08-02 2013-08-19 スリーエム イノベイティブ プロパティズ カンパニー Peroxide curable fluoroelastomers containing modifiers and iodine or bromine end groups
CN103101169A (en) * 2013-01-22 2013-05-15 张琪彬 Process for producing building plastic formwork by co-extrusion method and compound mould
CN103101169B (en) * 2013-01-22 2016-02-24 张琪彬 Coextruding method produces building plastic formwork technique and composite die
CN103978621A (en) * 2014-05-20 2014-08-13 杭州乐荣电线电器有限公司 Four-motor physical foaming co-extrusion device

Also Published As

Publication number Publication date
JP2508128B2 (en) 1996-06-19

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