JPS5513895B2 - - Google Patents

Info

Publication number
JPS5513895B2
JPS5513895B2 JP678973A JP678973A JPS5513895B2 JP S5513895 B2 JPS5513895 B2 JP S5513895B2 JP 678973 A JP678973 A JP 678973A JP 678973 A JP678973 A JP 678973A JP S5513895 B2 JPS5513895 B2 JP S5513895B2
Authority
JP
Japan
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
JP678973A
Other versions
JPS4998875A (ja
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 filed Critical
Priority to JP678973A priority Critical patent/JPS5513895B2/ja
Publication of JPS4998875A publication Critical patent/JPS4998875A/ja
Publication of JPS5513895B2 publication Critical patent/JPS5513895B2/ja
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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/535—Screws with thread pitch varying along the longitudinal axis
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/585—Screws provided with gears interacting with the flow
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/64—Screws with two or more threads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)
JP678973A 1973-01-13 1973-01-13 Expired JPS5513895B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP678973A JPS5513895B2 (ja) 1973-01-13 1973-01-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP678973A JPS5513895B2 (ja) 1973-01-13 1973-01-13

Publications (2)

Publication Number Publication Date
JPS4998875A JPS4998875A (ja) 1974-09-18
JPS5513895B2 true JPS5513895B2 (ja) 1980-04-12

Family

ID=11647931

Family Applications (1)

Application Number Title Priority Date Filing Date
JP678973A Expired JPS5513895B2 (ja) 1973-01-13 1973-01-13

Country Status (1)

Country Link
JP (1) JPS5513895B2 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51121190A (en) * 1975-04-15 1976-10-22 Hitachi Cable Ltd Apparatus for manufacturing linear thermoplastic resin foam
JPS5357478A (en) * 1976-11-04 1978-05-24 Sumitomo Electric Ind Ltd Manufacturing process of highly-foamed insulated cable
JPH03233814A (ja) * 1990-02-09 1991-10-17 Sumitomo Electric Ind Ltd 高発泡絶縁押出機

Also Published As

Publication number Publication date
JPS4998875A (ja) 1974-09-18

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