FR2265524A1 - Extruder screw tip for blending coloured feedstocks - by cross flow mixing without involving high sheer rates - Google Patents

Extruder screw tip for blending coloured feedstocks - by cross flow mixing without involving high sheer rates

Info

Publication number
FR2265524A1
FR2265524A1 FR7411617A FR7411617A FR2265524A1 FR 2265524 A1 FR2265524 A1 FR 2265524A1 FR 7411617 A FR7411617 A FR 7411617A FR 7411617 A FR7411617 A FR 7411617A FR 2265524 A1 FR2265524 A1 FR 2265524A1
Authority
FR
France
Prior art keywords
feedstocks
cross flow
extruder screw
screw tip
flow mixing
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
FR7411617A
Other languages
French (fr)
Other versions
FR2265524B3 (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.)
SCOMAC ETUDE ET CONST MACHINES
Original Assignee
SCOMAC ETUDE ET CONST MACHINES
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 SCOMAC ETUDE ET CONST MACHINES filed Critical SCOMAC ETUDE ET CONST MACHINES
Priority to FR7411617A priority Critical patent/FR2265524A1/en
Publication of FR2265524A1 publication Critical patent/FR2265524A1/en
Application granted granted Critical
Publication of FR2265524B3 publication Critical patent/FR2265524B3/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
    • B29C48/50—Details of extruders
    • B29C48/505—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
    • B29C48/03—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)

Abstract

The tip comprises a cylindrical boby with at least two annular collars of polygonal cross-section with chamfered sides to smooth the change of profile longitudinally. Esp. for extrusion compounding minor proportions of coloured granulated masterbatch with base material. By rotating integrally with the screw, the head provides a mixing/homogenisation action without generating a high back pressure or high shear forces in the passing melt. The collar cross-section should pref. be hexagonal, pref. with mutually offset crests. The end of the tip should be conical.
FR7411617A 1974-03-29 1974-03-29 Extruder screw tip for blending coloured feedstocks - by cross flow mixing without involving high sheer rates Granted FR2265524A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7411617A FR2265524A1 (en) 1974-03-29 1974-03-29 Extruder screw tip for blending coloured feedstocks - by cross flow mixing without involving high sheer rates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7411617A FR2265524A1 (en) 1974-03-29 1974-03-29 Extruder screw tip for blending coloured feedstocks - by cross flow mixing without involving high sheer rates

Publications (2)

Publication Number Publication Date
FR2265524A1 true FR2265524A1 (en) 1975-10-24
FR2265524B3 FR2265524B3 (en) 1977-02-04

Family

ID=9137175

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7411617A Granted FR2265524A1 (en) 1974-03-29 1974-03-29 Extruder screw tip for blending coloured feedstocks - by cross flow mixing without involving high sheer rates

Country Status (1)

Country Link
FR (1) FR2265524A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036024A1 (en) * 1980-02-26 1981-09-23 Detlef Gneuss Screw extruder
US4595546A (en) * 1983-11-14 1986-06-17 Crompton & Knowles Corporation Manufacture of elongated extruded cross-linked products

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036024A1 (en) * 1980-02-26 1981-09-23 Detlef Gneuss Screw extruder
US4595546A (en) * 1983-11-14 1986-06-17 Crompton & Knowles Corporation Manufacture of elongated extruded cross-linked products

Also Published As

Publication number Publication date
FR2265524B3 (en) 1977-02-04

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Legal Events

Date Code Title Description
ST Notification of lapse