[go: up one dir, main page]

WO1998039152A1 - Dispositif d'extrusion - Google Patents

Dispositif d'extrusion Download PDF

Info

Publication number
WO1998039152A1
WO1998039152A1 PCT/EP1998/001255 EP9801255W WO9839152A1 WO 1998039152 A1 WO1998039152 A1 WO 1998039152A1 EP 9801255 W EP9801255 W EP 9801255W WO 9839152 A1 WO9839152 A1 WO 9839152A1
Authority
WO
WIPO (PCT)
Prior art keywords
extrusion
extrusion device
mixing
sub
extruder
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.)
Ceased
Application number
PCT/EP1998/001255
Other languages
German (de)
English (en)
Inventor
Torsten Herrmann
Erich SCHÜRMANN
Jürgen Herrmann
Norbert Thiele
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP98913651A priority Critical patent/EP0898507A1/fr
Publication of WO1998039152A1 publication Critical patent/WO1998039152A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3442—Mixing, kneading or conveying the foamable material
    • 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
    • B29C48/365—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pumps, e.g. piston pumps
    • B29C48/37—Gear pumps
    • 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
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/387—Plasticisers, homogenisers or feeders comprising two or more stages using a screw extruder and a gear pump
    • 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
    • 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

Definitions

  • the invention relates to an extrusion device, in particular for producing a foamed polymer, with at least one extruder screw for transporting at least one polymer added by a feed device, a feed device for a blowing agent after the polymer has melted, a mixing device for mixing polymer melt and blowing agent, and a throttle for production a pressure drop in the polymer / blowing agent mixture supplied and an extrusion tool.
  • extrusion device is known from DE 19 521 520.
  • all of the above-mentioned units of the extrusion device are combined in one extruder and arranged one behind the other in the transport direction.
  • At least one polymer is fed to the extruder screw through the feed device and then melted.
  • a blowing agent such as CO 2 , N 2 or the like, is fed to the polymer melt via the feed device and then the polymer melt and blowing agent are mixed with one another in the mixing device in order to produce a mixture or solution which is as single-phase as possible.
  • DE 19 521 520 describes in particular how, by controlling a throttle at the outlet end of the mixing device, a sudden pressure drop in the polymer / blowing agent mixture is achieved independently of a set flow rate.
  • This special control of the throttle decouples the pressure drop and flow rate from one another, which in particular enables the nucleation rate to be kept constant. Due to the constant pressure drop rate and nucleation rate, nucleation takes place homogeneously over the entire cross section of the throttle discharge opening. This gives the foamed polymer a higher and more uniform lower cell density, the foamed polymer having a microcellular or submicrocellular structure of good quality and without restriction in the shape.
  • the advantages of the throttle and its control also apply to the present application.
  • a disadvantage of DE 19 521 520 is that the extrusion device as a whole is structurally relatively complex and expensive, since the extrusion device or the extruder as a whole can only be used to produce foamed polymer with a microcellular or submicrocellular structure. Furthermore, due to the entire structure of the extrusion device, an individual adaptation or adjustment to different process conditions and an expandability or convertibility of the extrusion device is not possible at all or only to a small extent.
  • the object of the application is therefore based on the object of improving the extrusion device mentioned at the outset in such a way that the device as a whole is structurally simpler and less expensive, with increased adaptability to different process conditions and / or construction and conversion requirements being possible at the same time.
  • extrusion device according to the invention in that the extruder screw and feed device are combined in one extruder and the feed device, mixing device, throttle and extrusion tool are designed as individual modules which can be connected to the feed end of the extruder.
  • any existing extruder for thermoplastic or thermoelastic plastics such as a screw extruder with or without a grooved feed zone, a twin screw extruder or a screw press, can be used. to be converted by additional attachment of all or at least some of the individual modules for the production of foamed polymer with a microcellular or submicrocellular structure.
  • the extrusion device can be easily adapted to different process conditions by appropriate arrangement of more or fewer individual modules and can be converted quickly and easily by exchanging or additionally arranging individual modules.
  • the actual extrusion screw and feed device for at least one polymer-containing extruder is used in this context only for melting the polymer in a manner known per se.
  • a first pressure increasing device can advantageously be arranged downstream at the exit end of the extruder in the direction of transport downstream as the first connected individual module.
  • a pressure increasing device can be designed as an active device, for example as a pump. This increases or, if necessary, decreases the pressure prevailing in the polymer melt output by the extruder to a pressure required for further processing by the subsequent individual modules.
  • connecting flanges are arranged on these or can be arranged between them during assembly.
  • a connection of the individual modules to one another and also to the discharge end of the extruder can be established in the usual way, for example by screwing or the like, via the connecting flanges.
  • the connecting flanges can also be designed as separate components, in particular the connecting flange between the extruder and the Most can be designed as an adapter connection flange on this individual module to be fastened. This can be selected appropriately for each extruder and create a transition to the individual modules.
  • connecting flanges can be combined as individual components and connecting flanges at the ends of extruders and / or individual modules.
  • the individual module forming the mixing device can be composed of sub-modules, for example.
  • the mixing device for example, can be designed for more or less length with more or less different mixing elements or the like.
  • At least one second pressure increasing device in particular a pump, can be arranged as a further individual module between the sub-modules of the mixing device and / or at the end of the mixing device downstream in the transport direction. This allows the pressure in the homogeneously mixed polymer melt to be optimally adapted for further processing.
  • At least one diffuser designed as a single module can be arranged between the first mixing device or the second pressure increasing device and the throttle . This can be connected accordingly to the other individual modules by means of the connection flanges mentioned above.
  • the individual module forming the diffuser can also be composed of various sub-modules, which are selected and assembled in a corresponding number depending on requirements.
  • a second mixing device can additionally be arranged in the individual module forming the diffuser. A further homogenization of the melt / blowing agent mixture is thereby achieved.
  • the second mixing device is arranged in at least one submodule of the diffuser.
  • the second mixing device and the diffuser can also be formed by separate sub-modules, as a result of which the mixing and diffusion zone can be exactly separated from one another and individually adjusted.
  • At least one third pressure increasing device in particular a pump, can be arranged as a further individual module between the sub-modules for the second mixing device and / or the diffuser.
  • the throttle has at least two rotatably driven, intermeshing gear wheels.
  • a throttle constructed similarly to a gear pump, reference is once again expressly made to DE 19 521 520, which was mentioned at the beginning as a genus.
  • the gears can be driven mechanically, electrically or in some other way.
  • pressure sensors can be assigned at least to the input and output sides of the pressure increasing devices and / or the throttle.
  • a simple assignment of a pressure sensor is provided if one is arranged in a corresponding connection flange. This can be done, for example, in the separate connecting flanges mentioned at the beginning.
  • a pressure sensor can also be arranged in a connection flange formed on the corresponding individual module. The latter is advantageous, for example, in the case of the pressure booster devices, since their inlet and outlet pressure are generally measured.
  • a heating device can be arranged in at least one individual and / or sub-module.
  • the temperature of the mixture can assume unfavorably high values for further processing, so that in at least one individual and / or sub-module a cooling device can be arranged.
  • At least one temperature sensor can be assigned to an individual and / or sub-module.
  • connection flanges separate from the various modules and the arrangement of pressure sensors or temperature sensors in them, such connection flanges in principle form separate modules which can be arranged between the other individual and / or sub-modules of the extrusion device as required.
  • a first regulating device can be connected to the pressure and temperature sensors for determining the respective values.
  • the first control device can also be connectable to the pressure increase devices designed as gear pumps and / or the speed pickups assigned to the extruder and / or the throttle.
  • the corresponding speed values can not only be determined, but can also be used by the control device to control or regulate the extrusion device.
  • the first regulating device for metering the blowing agent with the blowing agent supply device can be used.
  • a second regulating device can be connected to the propellant supply device in accordance with the first regulating device with speed sensors, temperature sensors and / or pressure sensors or at least for metering the propellant.
  • the second control device can continue to be connectable to the speed pickups and / or the first control device.
  • the location of the feeding of the propellant can be varied in the simplest manner in that an injection opening connected to the propellant supply device is formed in a connecting flange, this injection opening preferably being formed in a connecting flange at an upstream inlet end of the mixing device in the transport direction.
  • the injection opening can also be formed in a sub-module forming the individual module of the mixing device or in a corresponding connecting flange of this sub-module.
  • these can have, for example, static or mechanically driven mixers or mixing elements.
  • static and mechanically driven mixers can also be arranged in combination in a single or sub-module.
  • the modular structure of the extrusion device can continue in the extrusion tool in such a way that it has a forming die and / or a fine drawing die and / or a cooling device as a sub-module.
  • first and / or second control devices can also be designed as control modules, and in the case of the second control device it can in particular be part of the individual module forming the propellant supply device.
  • Known cable connections or other connection devices - also wireless - can be used to connect the control devices to the corresponding sensors and sensors.
  • Fig. 1 shows a basic structure of an extrusion device according to the invention.
  • Fig. 1 an embodiment of the extrusion device according to the invention is shown in principle.
  • a number of individual modules 10 are arranged one behind the other.
  • a gear pump as a pressure increasing device 12 is arranged as a single module 10 via a connecting flange 13. This connects in the transport direction 11 as a further individual module 10 to a mixing device 5.
  • a connecting flange 13 is also provided between the mixing device 5 and the first pressure increasing device 12.
  • connection flanges 13 between further individual modules 10 or sub-modules 14 forming an individual module are only shown in principle and can be designed both as connection flanges formed at the respective ends of the modules or as connection flanges 13 separately formed between the modules and arranged between them. These are attached to the corresponding modules for their connection by conventional measures, such as screwing or the like.
  • the first mixing device 5 is composed of three sub-modules 14. Mixing elements 32 are arranged in each of the sub-modules 14, which may comprise static, mechanically driven or a combination of static and mechanically driven mixing elements.
  • a blowing agent can be added to the polymer melt fed from the extruder 8 and the first pressure increasing device 12 to the first mixing device 5.
  • the feed device 4 can also be arranged directly on the mixing device 5.
  • a heating device 23 is embodied in the middle sub-module 14 of the first mixing device 5 as an example. Such a heating device can also be present in other individual or sub-modules.
  • a second pressure-increasing device 16 designed as a gear pump is connected to the last sub-module 14 of the first mixing device 5 in the transport direction 11 at the downstream end 15. This is also designed as a single module 10 with corresponding connection flanges 13 only indicated in principle.
  • a diffuser 17 is arranged between the second pressure increasing device 16 and a throttle 6 as a further individual module.
  • This forms an individual module 10 composed of four sub-modules 14. Again, the corresponding connecting flanges 13 between the sub-modules and between them and the second pressure increasing device or throttle 6 are only indicated in principle.
  • the diffuser 17 is formed with an additional mixing device 18.
  • Such an additional or second mixing device 18 can also be designed as a separate module unit, see the third submodule 14 in the transport direction of the diffuser 17.
  • the mixing device has corresponding mixing elements 32, which in turn are used as static see, mechanically driven or can be formed by a combination of static and mechanically driven mixing elements.
  • a cooling device 24 is also arranged, which continues in the third and fourth sub-modules.
  • a heating device can also be arranged in one or more of the sub-modules 14 of the diffuser 17 if required.
  • third pressure increasing device 19 can be arranged as a single module 10 between the first and second submodule 14 of the diffuser 17, as is only shown in principle in FIG. 1.
  • pressure booster devices can be arranged between the various individual or sub-modules if required.
  • the throttle 6 connects to the diffuser 17 as a further individual module 10.
  • the throttle 6 has two rotatably driven, meshing gears 20 and 21.
  • the throttle 6 is connected as a further individual module 10 to the extrusion tool 7, which can be constructed from further sub-modules, not shown.
  • the extrusion device 1 also has a number of pressure sensors 22, speed sensors 27 and at least one temperature sensor 27.
  • the pressure sensors 22 are arranged, in particular, on the respective inlet and outlet sides of the pressure booster devices 12, 16 and the throttle 6 either directly in these or in the connecting flanges arranged between them and the respectively preceding or following modules.
  • the various pressure sensors 22 are specified in more detail as p1 to p6.
  • the arrows shown indicate the signal flow from the pressure sensors 22 to a first control device 36 as a control module 31.
  • the speed sensors 27 are specified in more detail by vl to v4.
  • the speed sensor 27 (v4) is assigned to the extrusion screw 2 of the extruder 8 and measures its speed.
  • the further speed sensors 27 are used to measure the speed of the pressure booster devices 12, 16, which are each designed as gear pumps, or the throttle 6, which is constructed analogously to a gear pump 12 measured from the extruder 8 polymer melt.
  • analog temperature sensors can, depending on requirements, be assigned to various other individual or sub-modules 10, 14 following in the transport direction 11.
  • the further arrows running between the different speed sensors 27 (vl to v4) and the temperature sensor 25 (Tl) identify the respective signal flow.
  • the speed of the extrusion screw 2 and the respective gear wheels of the pressure increasing device 12, 16 and the throttle 6 can be controlled or regulated according to a predetermined program by the first control device 26.
  • this is connected to a second control device 28, as is characterized by the signal case arranged between the two.
  • the second control device 28 is part of the extrusion device 1 according to the invention as a further control module 31. As shown by further signal arrows running in the direction of the second control device 28, the second control device 28 also receives signals from the speed sensors 27 (vl to v3).
  • the device 1 comprises in particular a number of individual modules 10 and control modules 31, which each extruder 8 known per se for thermoplastic or thermoelastic plastics, such as Screw extruders with or without a grooved entry zone, twin screw extruders, screw presses or the like are connected downstream in the transport direction 11.
  • each extruder 8 known per se for thermoplastic or thermoelastic plastics, such as Screw extruders with or without a grooved entry zone, twin screw extruders, screw presses or the like are connected downstream in the transport direction 11.
  • the polymer melted by the extruder 8 and fed to it via the feed device 3 is fed to the first pressure increasing device 12 at a certain temperature T1 and a certain pressure P6.
  • the pressure P6 of the polymer melt is raised to the pressure P5.
  • a corresponding blowing agent is then metered into the polymer melt by the blowing agent supply device 4.
  • This can be any mixture of gaseous substances at room temperature as well as a chemical blowing agent.
  • this and the polymer melt are mixed in the first mixing device 5 by the corresponding mixing elements 32 and an essentially multiphase polymer / blowing agent mixture is formed.
  • the pressure in the polymer / blowing agent mixture changes from p5 to p4.
  • the pressure in the mixture is increased from p4 to p3 by the second pressure increasing device 16.
  • the generally still multi-phase polymer / blowing agent mixture is given sufficient time under the relatively very high pressure p3 to p2 to form a single-phase polymer / blowing agent solution.
  • a second mixing device 18 with corresponding mixing elements 32 can be arranged within the diffuser 17 in order to further homogenize the polymer / blowing agent mixture or solution.
  • the polymer / blowing agent solution is passed through the throttle 6 and by means of which the pressure is suddenly reduced from p2 to pl.
  • the pressure is suddenly reduced from p2 to pl.
  • cell nuclei are generated in the polymer / blowing agent solution, see also DE 19 521 520, and phase separation is initiated.
  • the polymer / blowing agent solution is then fed to the extrusion die 7, in which the cell nuclei now expand to larger cells due to a further drop in pressure.
  • the first control device 26 regulates or controls the speeds vl to v4 of the throttle 6, the pressure increasing devices 13, 16 and the extruder screw 2 of the extruder 8.
  • the speed is regulated or controlled as a function of the pressures p1 to p6 and the other speeds from left to v4.
  • the aim of the regulation or control is to keep each of the pressures pl to p6 at an individually desired level.
  • the second regulating device 28 regulates or controls the metering of the propellant from the feed device 4 as a function of the speeds vl to v3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un dispositif d'extrusion destiné notamment à la production d'un polymère. Ce dispositif présente au moins une vis d'extrudeuse (2) assurant le transport d'au moins un polymère fourni par un dispositif d'alimentation (3), un dispositif d'amenée (4) assurant l'apport d'un agent propulseur après fusion du polymère, un dispositif de mélange assurant le mélange de la matière polymère fondue et de l'agent propulseur, une buse (6) assurant la production d'une chute de pression dans le mélange polymère/agent propulseur apporté et enfin un outil d'extrusion. Pour simplifier globalement la conception du dispositif et réduire son coût de fabrication, tout en assurant une meilleure adaptabilité aux différentes conditions de fabrication et/ou exigences de construction et de transformation, la vis d'extrudeuse (2) et le dispositif d'alimentation (3) sont placés dans un extrudeur et le dispositif d'amenée (4), le dispositif de mélange (5), la buse (6) et l'outil d'extrusion (7) sont conçus sous forme de modules individuels reliés à l'extrémité d'évacuation de l'extrudeur.
PCT/EP1998/001255 1997-03-05 1998-03-05 Dispositif d'extrusion Ceased WO1998039152A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98913651A EP0898507A1 (fr) 1997-03-05 1998-03-05 Dispositif d'extrusion

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19708986.0 1997-03-05
DE19708986A DE19708986A1 (de) 1997-03-05 1997-03-05 Extrusionsvorrichtung

Publications (1)

Publication Number Publication Date
WO1998039152A1 true WO1998039152A1 (fr) 1998-09-11

Family

ID=7822329

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/001255 Ceased WO1998039152A1 (fr) 1997-03-05 1998-03-05 Dispositif d'extrusion

Country Status (3)

Country Link
EP (1) EP0898507A1 (fr)
DE (1) DE19708986A1 (fr)
WO (1) WO1998039152A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100389949C (zh) * 2002-07-11 2008-05-28 倍耐力轮胎公司 用于连续生产弹性体组合物的方法和装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19853021B4 (de) * 1998-11-18 2006-02-23 Vereinigung zur Förderung des Instituts für Kunststoffverarbeitung in Industrie und Handwerk an der Rhein.-Westf. Technischen Hochschule Aachen eV Vorrichtung zur Herstellung geschäumter Kunststoff-Formteile durch Einbringen eines physikalischen Treibmittels in den Schmelzestrom einer konventionellen Spritzgießmaschine
DE10055022A1 (de) * 2000-11-07 2002-05-16 Atecs Mannesmann Ag Verfahren zur Herstellung eines Formteils aus mikrozellularem Schaum und entsprechende Vorrichtung
FR2843331B1 (fr) * 2002-08-09 2005-12-30 Hutchinson Procede de fabrication d'articles en materiau elastomere cellulaire
DE102005020794A1 (de) 2005-05-04 2006-11-09 Coperion Werner & Pfleiderer Gmbh & Co. Kg Anlage zur Erzeugung einer Schaumkunststoff-Folie
TW201008749A (en) * 2008-06-25 2010-03-01 Sulzer Chemtech Ag An apparatus and method for the introduction of a foaming agent
EP2918388A1 (fr) * 2014-03-10 2015-09-16 Sulzer Chemtech AG Procédé pour recycler des matériaux en plastique expansible et matière plastique expansée ou expansible pouvant être obtenue par ce procédé
DE102014112268A1 (de) * 2014-08-27 2016-03-03 List Holding Ag Vorrichtung zum Transport von kompakten Polymermassen
AT517972B1 (de) * 2015-11-24 2017-09-15 Next Generation Recyclingmaschinen Gmbh Vorrichtung und Verfahren zur Verarbeitung von thermoplastischem Kunststoff mit einer Temperiereinrichtung für eine Transportschnecke

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5863431A (ja) * 1981-10-12 1983-04-15 Sekisui Plastics Co Ltd 樹脂押出成形装置
DE3600041A1 (de) * 1986-01-03 1987-07-09 Reifenhaeuser Masch Anlage fuer die herstellung von kunststoffhalbzeug aus geschaeumtem kunststoff
JPH01301318A (ja) * 1988-05-31 1989-12-05 Mitsubishi Yuka Badische Co Ltd 熱可塑性樹脂の押出発泡成形法
EP0445847A2 (fr) * 1987-04-15 1991-09-11 The Dow Chemical Company Préparation de mousses en polymère et produits obtenus
EP0574051A1 (fr) * 1992-05-08 1993-12-15 Mondomix Holland B.V. Dispositif pour la fabrication de produits écumeux
DE19521520A1 (de) * 1995-06-13 1996-12-19 Torsten Herrmann Verfahren und Vorrichtung zur Herstellung eines aufgeschäumten Polymer
WO1997006935A1 (fr) * 1995-08-14 1997-02-27 Massachusetts Institute Of Technology Dispositif d'etranglement a engrenage en tant que dispositif de nuceation dans un systeme d'extrusion en continu d'un materiau microcellulaire

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5863431A (ja) * 1981-10-12 1983-04-15 Sekisui Plastics Co Ltd 樹脂押出成形装置
DE3600041A1 (de) * 1986-01-03 1987-07-09 Reifenhaeuser Masch Anlage fuer die herstellung von kunststoffhalbzeug aus geschaeumtem kunststoff
EP0445847A2 (fr) * 1987-04-15 1991-09-11 The Dow Chemical Company Préparation de mousses en polymère et produits obtenus
JPH01301318A (ja) * 1988-05-31 1989-12-05 Mitsubishi Yuka Badische Co Ltd 熱可塑性樹脂の押出発泡成形法
EP0574051A1 (fr) * 1992-05-08 1993-12-15 Mondomix Holland B.V. Dispositif pour la fabrication de produits écumeux
DE19521520A1 (de) * 1995-06-13 1996-12-19 Torsten Herrmann Verfahren und Vorrichtung zur Herstellung eines aufgeschäumten Polymer
WO1997006935A1 (fr) * 1995-08-14 1997-02-27 Massachusetts Institute Of Technology Dispositif d'etranglement a engrenage en tant que dispositif de nuceation dans un systeme d'extrusion en continu d'un materiau microcellulaire

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 157 (M - 227) 9 July 1983 (1983-07-09) *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 091 (M - 0938) 20 February 1990 (1990-02-20) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100389949C (zh) * 2002-07-11 2008-05-28 倍耐力轮胎公司 用于连续生产弹性体组合物的方法和装置

Also Published As

Publication number Publication date
EP0898507A1 (fr) 1999-03-03
DE19708986A1 (de) 1998-09-10

Similar Documents

Publication Publication Date Title
DE3206325C2 (de) Mehrwellige, kontinuierlich arbeitende Misch- und Knetmaschine für plastifizierbare Massen
EP2957412B1 (fr) Mélange de matière synthétique et particules de bois
EP0143894B1 (fr) Procédé pour la réalisation de réactions chimiques notamment pour la fabrication de matières plastiques à l'aide de machines à extruder et installation à cet effet
DE2108936C3 (de) Verfahren und Vorrichtung zum Herstellen von Kunststoffhalbzeug mit Schaumstoffkern und ungeschäumtem Mantel
DE69505999T3 (de) Verfahren und vorrichtung zur herstellung von geschlossen-zelligen schaumprodukten
DE2834043C2 (fr)
DE2417865C2 (de) Vorrichtung zum Extrudieren von Kunststoff
DE2700003A1 (de) Anlage zur herstellung von strangpressprofilen
EP2039492A1 (fr) Machine de mélange de composants
DD231029A1 (de) Verfahren und einrichtung zum compoundieren von thermoplasten, insbesondere thermoplastabfaellen
EP0988955A2 (fr) Procédé pour introduire des additifs dans un courant de polymère fondu
EP0898507A1 (fr) Dispositif d'extrusion
DE3610159C2 (fr)
DE2415896A1 (de) Schneckenpresse
EP0676270A1 (fr) Méthode et appareil pour la production de matériau plastique moussant
DE19521520A1 (de) Verfahren und Vorrichtung zur Herstellung eines aufgeschäumten Polymer
DE3600041C2 (fr)
DE3038580A1 (de) Verfahren und jvorrichtung zum einbringen von zusaetzen in ein kunststoffmaterial
DE19539203A1 (de) Extruder für Kunststoffe
DE3316838C2 (de) Tandem-Extruderanlage zur Herstellung einer geschäumten Materialbahn aus thermoplastischem Material, insbesondere aus Polystyrol
EP1719600A2 (fr) Installation pour la production de feuilles de mousse plastique
DE102006054204A1 (de) Mischung von Kunststoff und Holzpartikeln
DE2907074A1 (de) Schneckenextruder fuer polyvinylidenfluoridmonofile
EP1542853B1 (fr) Vis de plastification pour une extrudeuse ou une boudineuse, presentant une plus faible largeur de filet dans la zone de transition
EP1379372B1 (fr) Dispositif de production d'un profile extrude

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CN JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

WWE Wipo information: entry into national phase

Ref document number: 1998913651

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWP Wipo information: published in national office

Ref document number: 1998913651

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 1998538164

Format of ref document f/p: F

WWW Wipo information: withdrawn in national office

Ref document number: 1998913651

Country of ref document: EP