FR2263879A1 - Centripetal extruder with interrupted spiral ribs - generating positive pumping pressures for e.g. cable coating - Google Patents

Centripetal extruder with interrupted spiral ribs - generating positive pumping pressures for e.g. cable coating

Info

Publication number
FR2263879A1
FR2263879A1 FR7408579A FR7408579A FR2263879A1 FR 2263879 A1 FR2263879 A1 FR 2263879A1 FR 7408579 A FR7408579 A FR 7408579A FR 7408579 A FR7408579 A FR 7408579A FR 2263879 A1 FR2263879 A1 FR 2263879A1
Authority
FR
France
Prior art keywords
extruder
spiral ribs
generating positive
centripetal
cable coating
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
FR7408579A
Other languages
French (fr)
Other versions
FR2263879B1 (en
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.)
MISSENARD PIERRE FR
Original Assignee
MISSENARD PIERRE FR
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 MISSENARD PIERRE FR filed Critical MISSENARD PIERRE FR
Priority to FR7408579A priority Critical patent/FR2263879A1/en
Publication of FR2263879A1 publication Critical patent/FR2263879A1/en
Application granted granted Critical
Publication of FR2263879B1 publication Critical patent/FR2263879B1/fr
Granted 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
    • B29C48/46—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using vanes
    • 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
    • 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)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

In a centripetal extruder, each of the opposing disc daces features >=1 array of surface ribs defining >1 series of concentric, partially spiral channels which positively pump matl. towards the extrusion axis. Used esp. for coating cables passing as cores through a coaxial passage through the extruder. Reduction of the matl. path area by the interrupted spiral ribs increases the back pressure available at the outlet die. Decompression zones permit devolatilisation if desired. Device is more efficient than a single screw Archimedean extruder.
FR7408579A 1974-03-13 1974-03-13 Centripetal extruder with interrupted spiral ribs - generating positive pumping pressures for e.g. cable coating Granted FR2263879A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7408579A FR2263879A1 (en) 1974-03-13 1974-03-13 Centripetal extruder with interrupted spiral ribs - generating positive pumping pressures for e.g. cable coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7408579A FR2263879A1 (en) 1974-03-13 1974-03-13 Centripetal extruder with interrupted spiral ribs - generating positive pumping pressures for e.g. cable coating

Publications (2)

Publication Number Publication Date
FR2263879A1 true FR2263879A1 (en) 1975-10-10
FR2263879B1 FR2263879B1 (en) 1976-10-08

Family

ID=9136268

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7408579A Granted FR2263879A1 (en) 1974-03-13 1974-03-13 Centripetal extruder with interrupted spiral ribs - generating positive pumping pressures for e.g. cable coating

Country Status (1)

Country Link
FR (1) FR2263879A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989000910A1 (en) * 1987-07-29 1989-02-09 Kari Kirjavainen Extrusion method and a plate extruder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989000910A1 (en) * 1987-07-29 1989-02-09 Kari Kirjavainen Extrusion method and a plate extruder

Also Published As

Publication number Publication date
FR2263879B1 (en) 1976-10-08

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Legal Events

Date Code Title Description
ST Notification of lapse