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WO1998010910A1 - Extrudeuse pour la production de granules de matiere plastique - Google Patents

Extrudeuse pour la production de granules de matiere plastique Download PDF

Info

Publication number
WO1998010910A1
WO1998010910A1 PCT/EP1997/004916 EP9704916W WO9810910A1 WO 1998010910 A1 WO1998010910 A1 WO 1998010910A1 EP 9704916 W EP9704916 W EP 9704916W WO 9810910 A1 WO9810910 A1 WO 9810910A1
Authority
WO
WIPO (PCT)
Prior art keywords
extruder
mixing elements
static mixing
plastic granules
granulating
Prior art date
Application number
PCT/EP1997/004916
Other languages
German (de)
English (en)
Inventor
Jürgen Bartl
Peter Heidemeyer
Original Assignee
Krupp Werner & Pfleiderer Gmbh
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 Krupp Werner & Pfleiderer Gmbh filed Critical Krupp Werner & Pfleiderer Gmbh
Priority to JP10513239A priority Critical patent/JP2001500439A/ja
Priority to CA002265771A priority patent/CA2265771A1/fr
Priority to AU45543/97A priority patent/AU4554397A/en
Priority to DE19780935T priority patent/DE19780935D2/de
Publication of WO1998010910A1 publication Critical patent/WO1998010910A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/32—Mixing; Kneading continuous, with mechanical mixing or kneading devices with non-movable mixing or kneading devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
    • 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
    • B29C48/25—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
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders

Definitions

  • the invention relates to an extruder for the production of plastic granules, in particular a screw extruder with a granulating device, consisting of a granulating head housing and a perforated plate.
  • a screw extruder with a granulating device consisting of a granulating head housing and a perforated plate.
  • Such an extruder is particularly suitable for cutting thermoplastic materials under water.
  • Static mixing elements of the aforementioned type are known. It is also known to use such static mixing elements in continuous processes, for example for the homogenization of plastic melts, in particular for mixing in additives and / or to compensate for differences in color and temperature.
  • the energy required for mixing is supplied exclusively by the pumps or extruders required to convey the components to be mixed.
  • the static mixing elements used in an extruder in front of the granulating device produce a mixing effect during the granulation by continuously splitting, expanding and rearranging the components. Homogenization without moving parts is thus brought about.
  • the invention aims at eliminating the disadvantages that occur in the known extruders with a granulating device.
  • the configuration of the extruder in accordance with the invention homogenizes the melt flow rate and ensures that the flow in the feed channels to the perforated plate approaches a block flow, the residence time spectrum of the melt in the discharge area being reduced at the same time. No additional housing to be heated is required, so that a longer overall length of the extruder is not necessary. In addition, only the one required due to the static mixing elements is built Pressure on. This creates optimal conditions for the granulation of thermoplastic materials, with hot-cut granulation with special consideration of the uniformity of the granulate. The uniformity of the granules is therefore significantly improved.
  • Another significant advantage of the extruder according to the invention is that there is no additional melt volume in the discharge area - as is the case with the known extruders because of the additional housing to be heated - but quite the contrary, the melt volume in the discharge area is still there due to the static mixing elements present is reduced.
  • the static mixing elements are arranged only a short distance in front of the perforated plate. As a result, the effect of the static mixing elements is used to the maximum and it is avoided that flow irregularities occur again behind the static mixing elements.
  • Fig. 2 shows a partial section of an extruder according to the invention.
  • a heatable housing 4 is provided between the extruder 1 and the pelletizing head housing 2, in which static mixing elements 5 are inserted.
  • the extruder 1 shown in FIG. 2 is also provided with a granulating head housing 2 and a perforated plate 3. However, no additional heatable housing is required here, because the static mixing elements 5 are inserted into the melt channels 6 of the pelletizing head housing 2.
  • the direction of flow of the melt is indicated by arrows.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

Selon l'invention, dans une extrudeuse (1) utilisée pour produire des granulés de matière plastique, en particulier une extrudeuse à vis pourvue d'un dispositif de granulation constitué d'un carter de tête de granulation (2) et d'une plaque perforée (3), des éléments de mélange (5) statiques connus en soi sont placés dans les canaux à matière en fusion (6) du carter de tête de granulation (2).
PCT/EP1997/004916 1996-09-12 1997-09-09 Extrudeuse pour la production de granules de matiere plastique WO1998010910A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP10513239A JP2001500439A (ja) 1996-09-12 1997-09-09 プラスチック粒状物を製造するための押し出し機
CA002265771A CA2265771A1 (fr) 1996-09-12 1997-09-09 Extrudeuse pour la production de granules de matiere plastique
AU45543/97A AU4554397A (en) 1996-09-12 1997-09-09 Extruder to produce plastic granules
DE19780935T DE19780935D2 (de) 1996-09-12 1997-09-09 Extruder für die Herstellung von Kunststoffgranulat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19637063A DE19637063A1 (de) 1996-09-12 1996-09-12 Extruder für die Herstellung von Kunststoffgranulat
DE19637063.9 1996-09-12

Publications (1)

Publication Number Publication Date
WO1998010910A1 true WO1998010910A1 (fr) 1998-03-19

Family

ID=7805360

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/004916 WO1998010910A1 (fr) 1996-09-12 1997-09-09 Extrudeuse pour la production de granules de matiere plastique

Country Status (5)

Country Link
JP (1) JP2001500439A (fr)
AU (1) AU4554397A (fr)
CA (1) CA2265771A1 (fr)
DE (2) DE19637063A1 (fr)
WO (1) WO1998010910A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006027216A1 (de) * 2006-06-12 2007-12-13 Pro-Tech Beratungs- Und Entwicklungs Gmbh Kunststoff-Regranuliermaschine
DE202012004600U1 (de) 2012-05-08 2012-06-01 Automatik Plastics Machinery Gmbh Düseneinrichtung
CA2843392C (fr) * 2014-02-19 2020-08-25 Redetec Inc. Appareil servant a extruder des matieres plastiques

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1901013A1 (de) * 1969-01-10 1970-07-16 Reifenhaeuser Kg Spritzkopf fuer Kunststoffstrangpressen
GB1553459A (en) * 1976-05-15 1979-09-26 Demag Kunststofftech Extruder diehead
US4931237A (en) * 1989-01-23 1990-06-05 Amoco Corporation Extrusion die apparatus and process for producing tubular film from thermoplastic molten material
JPH0542578A (ja) * 1991-08-12 1993-02-23 Noritake Co Ltd 押出成形用ダイ
EP0646408A1 (fr) * 1993-10-05 1995-04-05 Sulzer Chemtech AG Dispositif pour homogéniser des liquides très visqueux
EP0668139A1 (fr) * 1994-02-21 1995-08-23 Sulzer Chemtech AG Procédé pour la préparation de granules plastiques expansibles

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971219A (en) * 1956-08-14 1961-02-14 Du Pont Mixer distribution plate
JPS5584528A (en) * 1978-12-21 1980-06-25 Showa Yuka Kk Mixer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1901013A1 (de) * 1969-01-10 1970-07-16 Reifenhaeuser Kg Spritzkopf fuer Kunststoffstrangpressen
GB1553459A (en) * 1976-05-15 1979-09-26 Demag Kunststofftech Extruder diehead
US4931237A (en) * 1989-01-23 1990-06-05 Amoco Corporation Extrusion die apparatus and process for producing tubular film from thermoplastic molten material
JPH0542578A (ja) * 1991-08-12 1993-02-23 Noritake Co Ltd 押出成形用ダイ
EP0646408A1 (fr) * 1993-10-05 1995-04-05 Sulzer Chemtech AG Dispositif pour homogéniser des liquides très visqueux
EP0668139A1 (fr) * 1994-02-21 1995-08-23 Sulzer Chemtech AG Procédé pour la préparation de granules plastiques expansibles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 336 (M - 1435) 25 June 1993 (1993-06-25) *

Also Published As

Publication number Publication date
DE19637063A1 (de) 1998-03-19
AU4554397A (en) 1998-04-02
JP2001500439A (ja) 2001-01-16
DE19780935D2 (de) 1999-08-05
CA2265771A1 (fr) 1998-03-19

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