JPS5235978Y2 - - Google Patents

Info

Publication number
JPS5235978Y2
JPS5235978Y2 JP1973040411U JP4041173U JPS5235978Y2 JP S5235978 Y2 JPS5235978 Y2 JP S5235978Y2 JP 1973040411 U JP1973040411 U JP 1973040411U JP 4041173 U JP4041173 U JP 4041173U JP S5235978 Y2 JPS5235978 Y2 JP S5235978Y2
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
JP1973040411U
Other languages
Japanese (ja)
Other versions
JPS49139369U (OSRAM
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 JP1973040411U priority Critical patent/JPS5235978Y2/ja
Publication of JPS49139369U publication Critical patent/JPS49139369U/ja
Application granted granted Critical
Publication of JPS5235978Y2 publication Critical patent/JPS5235978Y2/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
    • B29C48/52—Screws with an outer diameter varying along the longitudinal axis, e.g. for obtaining different thread clearance
    • B29C48/525—Conical screws
    • 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
    • B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
JP1973040411U 1973-04-02 1973-04-02 Expired JPS5235978Y2 (OSRAM)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1973040411U JPS5235978Y2 (OSRAM) 1973-04-02 1973-04-02

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1973040411U JPS5235978Y2 (OSRAM) 1973-04-02 1973-04-02

Publications (2)

Publication Number Publication Date
JPS49139369U JPS49139369U (OSRAM) 1974-11-30
JPS5235978Y2 true JPS5235978Y2 (OSRAM) 1977-08-16

Family

ID=28165994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1973040411U Expired JPS5235978Y2 (OSRAM) 1973-04-02 1973-04-02

Country Status (1)

Country Link
JP (1) JPS5235978Y2 (OSRAM)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3143767A (en) * 1961-07-06 1964-08-11 Krauss Maffei Ag Multiple screw mixing and extrusion apparatus
GB1132898A (en) * 1965-08-13 1968-11-06 Werner & Pfleiderer Multi-stage screw treatment device

Also Published As

Publication number Publication date
JPS49139369U (OSRAM) 1974-11-30

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