FR2141682A1 - Mixing and extruding thermoplastics - with boundary layer mixing - Google Patents

Mixing and extruding thermoplastics - with boundary layer mixing

Info

Publication number
FR2141682A1
FR2141682A1 FR7217205A FR7217205A FR2141682A1 FR 2141682 A1 FR2141682 A1 FR 2141682A1 FR 7217205 A FR7217205 A FR 7217205A FR 7217205 A FR7217205 A FR 7217205A FR 2141682 A1 FR2141682 A1 FR 2141682A1
Authority
FR
France
Prior art keywords
ducts
mixing
duct
partial
mixing device
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
FR7217205A
Other languages
French (fr)
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of FR2141682A1 publication Critical patent/FR2141682A1/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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates
    • B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
    • 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
    • B29C48/362—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using static mixing devices
    • 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)

Abstract

An extruder for plastic, esp. thermoplastic or non-cross-linked elastomers has a mixing device in its feed duct for mixing at boundary layers of the extruded material. The mixing device is constructed conventionally of superimposed plates in contact on their flat faces and forming oblique part-ducts, the inclination of which relative to the plane of symmetry of the feed duct alternate left and right-handed from one part-duct to the next. In the central region, the inlets and outlets of adjacent part-ducts are alongside one another, separated only be the thin central partition plate of the superimposed plates. At the front and rear ends of the partial-ducts there is a sharp edge between the partial ducts adjacent at this posn. This causes the boundary layers from the upstream part of the main duct to be offset from the upstream portion of the main duct after passing through the oblique part-ducts.
FR7217205A 1971-06-16 1972-05-15 Mixing and extruding thermoplastics - with boundary layer mixing Pending FR2141682A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2129971 1971-06-16

Publications (1)

Publication Number Publication Date
FR2141682A1 true FR2141682A1 (en) 1973-01-26

Family

ID=5810966

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7217205A Pending FR2141682A1 (en) 1971-06-16 1972-05-15 Mixing and extruding thermoplastics - with boundary layer mixing

Country Status (5)

Country Link
BR (1) BR7203934D0 (en)
CH (1) CH531932A (en)
DE (1) DE2129971C2 (en)
FR (1) FR2141682A1 (en)
IT (1) IT955545B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2257593C2 (en) * 1972-11-24 1982-02-18 Bernd Dipl.-Ing. 5376 Nettersheim Zingsheim Device for equalizing temperature differences within the mass strand of thermoplastic and elastomeric masses
CH615113A5 (en) * 1976-04-29 1980-01-15 Sulzer Ag
DE19936922A1 (en) * 1999-08-05 2001-02-15 Ide Werkzeug Masch Tubular internal mixer for a plastics extruder, forms an initial core and annular flows whose positions are interchanged at the outlet
DE102014112713B4 (en) 2014-09-03 2018-11-29 Windmöller & Hölscher Kg Turning device for turning a melt, blowing head and method for performing a flushing process
DE102014112712A1 (en) 2014-09-03 2016-03-03 Windmöller & Hölscher Kg Turning device for turning a melt
DE102014112709B4 (en) * 2014-09-03 2023-02-23 Windmöller & Hölscher Kg Turning device for turning a melt, blow head and method for carrying out a rinsing process
DE102014112715B4 (en) 2014-09-03 2018-11-29 Windmöller & Hölscher Kg Turning device for turning a melt, blowing head and method for performing a rinsing process
DE102014112714A1 (en) 2014-09-03 2016-03-03 Windmöller & Hölscher Kg Turning device for turning a melt

Also Published As

Publication number Publication date
CH531932A (en) 1972-12-31
DE2129971C2 (en) 1974-04-25
DE2129971B1 (en) 1972-05-25
IT955545B (en) 1973-09-29
BR7203934D0 (en) 1973-08-23

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