JPS56123833A - Shaping method for hollow wiring materials - Google Patents

Shaping method for hollow wiring materials

Info

Publication number
JPS56123833A
JPS56123833A JP2867680A JP2867680A JPS56123833A JP S56123833 A JPS56123833 A JP S56123833A JP 2867680 A JP2867680 A JP 2867680A JP 2867680 A JP2867680 A JP 2867680A JP S56123833 A JPS56123833 A JP S56123833A
Authority
JP
Japan
Prior art keywords
area
spider
reduced
spider part
hollow 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.)
Pending
Application number
JP2867680A
Other languages
Japanese (ja)
Inventor
Yoshihisa Owada
Minoru Shioda
Yoshinori Yamaguchi
Kenji Matsumoto
Kazuo Saito
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.)
Kanegafuchi Chemical Industry Co Ltd
Original Assignee
Kanegafuchi Chemical Industry 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 Kanegafuchi Chemical Industry Co Ltd filed Critical Kanegafuchi Chemical Industry Co Ltd
Priority to JP2867680A priority Critical patent/JPS56123833A/en
Publication of JPS56123833A publication Critical patent/JPS56123833A/en
Pending 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
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To improve a falling weight strength of hollow wire materials, by making the area of the post-spider part less than 1/2 of the spider part and thereafter enlarging it to more than 2/3 of the spider part and then reducing the area at the rand part. CONSTITUTION:When a thermoplastic resin is extruded into a hollow wire using a die, the area of the post-spider part is reduced to less than 1/2 of the spider part 1, then, it is enlarged to more than 2/3 of the spider part. Then, the area is again reduced at the rand part 4, 5 to form a hollow wire. The length of the reduced zone for one size reduction should not be too short. It should be more than five times longer than the distance between the outer mandrel 2 and the inner mandrel 3 of the reduced part. If the thermoplastic resin contains such inorganic fillers as talc, mica, clay or plate glass, a remakarble effect can be resulted.
JP2867680A 1980-03-06 1980-03-06 Shaping method for hollow wiring materials Pending JPS56123833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2867680A JPS56123833A (en) 1980-03-06 1980-03-06 Shaping method for hollow wiring materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2867680A JPS56123833A (en) 1980-03-06 1980-03-06 Shaping method for hollow wiring materials

Publications (1)

Publication Number Publication Date
JPS56123833A true JPS56123833A (en) 1981-09-29

Family

ID=12255095

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2867680A Pending JPS56123833A (en) 1980-03-06 1980-03-06 Shaping method for hollow wiring materials

Country Status (1)

Country Link
JP (1) JPS56123833A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58104618U (en) * 1981-12-30 1983-07-16 日本軽金属株式会社 die for plastic extrusion
US8096799B2 (en) 2007-12-21 2012-01-17 American Maplan Corporation Swept leg spider for an extrusion apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58104618U (en) * 1981-12-30 1983-07-16 日本軽金属株式会社 die for plastic extrusion
US8096799B2 (en) 2007-12-21 2012-01-17 American Maplan Corporation Swept leg spider for an extrusion apparatus
US8333580B2 (en) 2007-12-21 2012-12-18 American Maplan Corporation Swept leg spider for an extrusion apparatus

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