FR2582251A1 - Turbomixer-extruder machine - Google Patents

Turbomixer-extruder machine Download PDF

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Publication number
FR2582251A1
FR2582251A1 FR8606110A FR8606110A FR2582251A1 FR 2582251 A1 FR2582251 A1 FR 2582251A1 FR 8606110 A FR8606110 A FR 8606110A FR 8606110 A FR8606110 A FR 8606110A FR 2582251 A1 FR2582251 A1 FR 2582251A1
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FR
France
Prior art keywords
action
blades
zones
extrusion chamber
turbomixer
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
FR8606110A
Other languages
French (fr)
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FR2582251B1 (en
Inventor
Martin Ferre Bolea
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.)
GUMIX SA
Original Assignee
GUMIX SA
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 GUMIX SA filed Critical GUMIX SA
Publication of FR2582251A1 publication Critical patent/FR2582251A1/en
Application granted granted Critical
Publication of FR2582251B1 publication Critical patent/FR2582251B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/24—Extrusion presses; Dies therefor using screws or worms
    • B30B11/248—Means preventing the material from turning with the screw or returning towards the feed hopper
    • 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
    • B29C48/25—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
    • B29C48/56—Screws having grooves or cavities other than the thread or the channel
    • 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
    • B29C48/59—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw
    • B29C48/60—Thread tops
    • 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
    • B29C48/68—Barrels or cylinders
    • B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
    • B29C48/687—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having projections with a short length in the barrel direction, e.g. pins
    • 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
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92571—Position, e.g. linear or angular
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing
    • 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)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

The invention relates to a turbomixer-extruder machine, with a single rotating screw 1 of helical flights, characterised in that the fixed barrel 2 of the extrusion chamber is provided with a plurality of zones with sets of hydrodynamically profiled directing blades 3, extending beyond the internal surface of the extrusion chamber, it being possible for their angle of action to be varied by driving from the outside and for them to be substituted by others, so as to give the profile suitable for the viscosity of a substance (mass) being worked, and in that, in the zones 4 where the directing blades are located, the flights of the screw have a lower height and act as radial- and axial-action blades.

Description

Cette invention concerne une extrudeuse-turbomélangeuse ayant une seule vis rotative de filets hélicoldaux.  This invention relates to an extruder-turbomixer having a single rotary screw of helical threads.

L'extrusion est le procédé principal utilisé pour obtenir des produits de caoutchouc, plastique et d'autres résines, naturels ou synthétiques, avec la forme ou le profil de tubes. Extrusion is the main process used to obtain rubber, plastic and other resins, natural or synthetic, with the shape or profile of tubes.

La méthode de fabrication par extrusion avec vis héli cotidale a pour base de plastifier le matdriau en le transformant en une substance visqueuse; celle-ci est transportée vers la tête de sortie, par une augmentation croissante et graduelle de la pression exercée, et de la température dans la masse transportée, et en la faisant passer à travers la - matrice placée dans ladite tête de sortie, pour obtenir le profil désiré. The method of manufacture by extrusion with heli cotidal screw is based on plasticizing the material by transforming it into a viscous substance; this is transported to the outlet head, by an increasing and gradual increase in the pressure exerted, and the temperature in the mass transported, and by passing it through the - matrix placed in said outlet head, to obtain the desired profile.

La présehte invention a pour objet le perfectionnement résultant de l'application, dans la chambre de l'extrudeuse, d'éléments connus sous la dénomination d'aubes dans d'autres machines rotatives destinées à la circulation de fluides, surtout les turbines. Ces éléments sont capables de provoquer des courants turbulents ou désordonnés et un véritable mélange de la masse transportée ; il en résulte une parfaite homogénéisation de la même masse. The object of the present invention is the improvement resulting from the application, in the extruder chamber, of elements known under the name of blades in other rotary machines intended for the circulation of fluids, especially turbines. These elements are capable of causing turbulent or disordered currents and a true mixture of the mass transported; this results in perfect homogenization of the same mass.

On a obtenu, grâce à l'application des aubes directrices dans les extrudeuses, une haute capacité de mélange de la masse en question, une plus grande production a une température inférieure et un meilleur rendement énergétique de ces machines. Thanks to the application of guide vanes in the extruders, a high mixing capacity of the mass in question has been obtained, greater production at a lower temperature and better energy efficiency of these machines.

L'application réelle des aubes directrices dans une extrudeuse a été étudiée et essayée en profondeur et, en considérant les particulatités techniques des aubes, on obtient une machine dont les avantages par rapport aux extrudeuses conventionnelles, sont les suivants
a) Haute capacité de mélange et homogénéisation de la masse travaillée, grâce à l'intervention d'une ou plusieurs roues a aubes directrices, avec un groupage d'aubes fixés au cylindre d'extrusion.The actual application of the guide vanes in an extruder has been studied and tested in depth and, considering the technical characteristics of the vanes, a machine is obtained whose advantages compared to conventional extruders are as follows
a) High mixing capacity and homogenization of the worked mass, thanks to the intervention of one or more wheels with guide vanes, with a grouping of vanes fixed to the extrusion cylinder.

b) Une meilleure qualité du produit obtenu, compacte et de czmctéristiques uniformes, due à la grande homogénéité du mélange. b) Better quality of the product obtained, compact and of uniform characteristics, due to the great homogeneity of the mixture.

c) Haute capacité de production grâce à l'augmentation du débit correspondant au flux de friction, du à l'action de cisaillement des aubes. Dans cette zone il n'y a pas de glissement ou friction de la masse contre le cylindre d'extrusion et l'entrainement est amélioré. c) High production capacity thanks to the increase in flow corresponding to the friction flow, due to the shearing action of the blades. In this area there is no sliding or friction of the mass against the extrusion cylinder and the drive is improved.

d) diminution de la température relative de la masse extrudée, grâce à une diminution de la friction pour les raisons indiquées dans le point antérieur. Ceci est un phénomène important pour le travail des mélanges de caoutchouc, car normalement la température ne doit pas dépasser cent degrés celcius. d) decrease in the relative temperature of the extruded mass, thanks to a decrease in friction for the reasons indicated in the previous point. This is an important phenomenon for the working of rubber mixtures, because normally the temperature should not exceed one hundred degrees celcius.

e) Un plus grand rendement énergétique de la machine, en obtenant une plus grande production sous la même puissance, tant grace à la croissance du flux, que grâce à l'incidence mineure du facteur négatif du flux de pression tout au long de la vis à extrusion, puisque les aubes atténuent la tendance au retour que la pression depuis la matrice placée dans la tête de sortie entraine. e) Greater energy efficiency of the machine, obtaining greater production under the same power, both thanks to the growth of the flow, and thanks to the minor incidence of the negative factor of the pressure flow throughout the screw extrusion, since the vanes attenuate the tendency to return that the pressure from the die placed in the outlet head causes.

Après plusieurs essais du type mécanique et de fonctionnement, avec une même machine extrudeuse-turbomélangeuse et avec divers mélanges, on a constaté que, pour obtenir les meilleures production et qualité de mélange, les aubes devront pouvoir changer leur inclinaison dans la chambre d'extrusion, et pour cela on devra pouvoir les diriger depuis l'extérieur en agissant sur leurs axesde rotation. After several tests of the mechanical and operating type, with the same extruder-turbomixer machine and with various mixtures, it has been found that, to obtain the best production and quality of mixture, the blades must be able to change their inclination in the extrusion chamber , and for this we must be able to direct them from the outside by acting on their axes of rotation.

Dans les dessins ci-joint, on illustre a titre d'exemple non limitatif, uns mode de réalisation de l'invention. In the accompanying drawings, an embodiment of the invention is illustrated by way of nonlimiting example.

La figure 1 est une vue en section transversale d'une machine extrudeuse-turbomélangeuse selon la présente invention. Figure 1 is a cross-sectional view of an extruder-turbomixer machine according to the present invention.

La figure 2 illustre une vue en élévation semi-sectionnée de la machine de la figure l, et
La figure 3 nous montre une vue détaillée, à échelle agrandie et en section, d'un ensemble d'aubes directrices accouplé à la machine.FIG. 2 illustrates a semi-sectioned elevation view of the machine of FIG. 1, and
Figure 3 shows a detailed view, on an enlarged scale and in section, of a set of guide vanes coupled to the machine.

Sur ces figures, on peut remarquer que la machine extrudeuse-turbomélangeuse en question, possède une seule vis rotative 1 de filets hélicoidaux, et dans le cylindre fixe 2 de la chambre d'extrusion, on a disposé des zones avec des ensembles d'aubes directrices de profil hydrodynamique 3, qui dépassent la surface interne de la chambre d'extrusion. In these figures, it can be noted that the extruder-turbomixer machine in question has a single rotary screw 1 of helical threads, and in the fixed cylinder 2 of the extrusion chamber, zones have been arranged with sets of blades hydrodynamic profile guidelines 3, which extend beyond the internal surface of the extrusion chamber.

Les aubes directrices 3 peuvent changer leur angle d'action, par entrainement depuis l'extérieur, et peuvent être substituées par d'autres, afin de donner le profil approprié en accord avec la viscosité de la masse travaillée. The guide vanes 3 can change their angle of action, by driving from the outside, and can be replaced by others, in order to give the appropriate profile in accordance with the viscosity of the mass worked.

Dans les zones 4 des filets, où se trouvent les aubes directrices 3, les filets de la vis 1 ont moins de hauteur, et agissent comme des aubes d'action radiale et axiale. Chacune des aubes directrices 3 est unie à une tige cylindrique introduite dans une chemise 9, dont la rda- tion y est libre, et pouvant être vissée dans un des orifices radiaux passants faits dans les cylindres fixes 2, cette tige cylindrique étant pourvue d'une extrémité externe 6 en protubérance, adaptée pour pouvoir être actionnée rotativement depuis l'extérieur, de façon que, au moyen d'une rotation de la tige cylindrique sur son axe, on peut faire varier l'angle d'action de l'aube 3. In the zones 4 of the threads, where the guide vanes 3 are located, the threads of the screw 1 have less height, and act as radial and axial action vanes. Each of the guide vanes 3 is joined to a cylindrical rod introduced into a jacket 9, the dimension of which is free therein, and which can be screwed into one of the passing radial orifices made in the fixed cylinders 2, this cylindrical rod being provided with an outer end 6 protruding, adapted to be able to be actuated rotatably from the outside, so that, by means of a rotation of the cylindrical rod on its axis, the angle of action of the blade can be varied 3.

Ce changement de l'angle d'action des aubes directrices 3 peut être effectué depuis l'extérieur de la chambre d'extrusion en relâchant la vis 5 et en agissant sur l'extrémité 6 de la tige, sans que l'aube 3 puisse glisser vers la vis 1 grâce à l'action de l'anneau de sécurité 7. L'angle d'action des aubes 3 ne peut pas être modifié par l'action du flux de la matière visqueuse extrudée, grâce au cône 8 de la tige, qui exerce un ancrage irréversible. il faut souligner qu'il peut y avoir en variante des moyens d'actionner ensemble et simultané ment les extrémités 6 des tiges cylindriques des aubes 3, afin de pouvoir changer leurs angles d'action en même temps.  This change in the angle of action of the guide vanes 3 can be made from outside the extrusion chamber by loosening the screw 5 and acting on the end 6 of the rod, without the vane 3 being able to slide towards screw 1 thanks to the action of the safety ring 7. The action angle of the blades 3 cannot be modified by the action of the flow of the extruded viscous material, thanks to the cone 8 of the stem, which exerts an irreversible anchoring. it should be emphasized that there may alternatively be means for actuating together and simultaneously the ends 6 of the cylindrical rods of the blades 3, in order to be able to change their angles of action at the same time.

Claims (3)

REVENDICATIONS 1 - Une machine extrudeuse-turbomélangeuse, avec une seule vis rotative (1) de filets hélicordaux, caractérisée en ce que le cylindre fixe (2) de la chambre d'extrusion est pourvu d'une pluralité de zones avec des ensembles d'aubes directrices de profil hydrodynamique (3), dépassant la surface interne de la chambre d'extrusion, pouvant varier leur angle d'action par entraînement depuis l'extérieur et pouvant être substitués par d'autres, afin de donner le profil approprié à la viscosité de la masse travaillée, et en ce que, dans les zones (4) où se trouvent les aubes directrices, les filets de la vis ont moins de hauteur, et agissent comme des aubes d'action radiale et axiale. 1 - An extruder-turbomixer machine, with a single rotary screw (1) of helical threads, characterized in that the fixed cylinder (2) of the extrusion chamber is provided with a plurality of zones with sets of blades hydrodynamic profile guidelines (3), extending beyond the internal surface of the extrusion chamber, being able to vary their angle of action by driving from the outside and being able to be replaced by others, in order to give the profile appropriate to the viscosity of the mass worked, and in that, in the zones (4) where the guide vanes are located, the threads of the screw have less height, and act as blades of radial and axial action. 2 - Une machine selon la revendication 1, caractérisée en ce que chaque aube directrice (3) est unie à une tige cylindrique introduite et librement rotative dans une chemise (9) pouvant être vissée dans un des orifices radiaux passants réalisés dans les cylindres fixes (2), cette tige cylindrique étant pourvue d'une extrémité externe (6) en protubérance, adaptée pour pouvoir être actionnée rotativement depuis l'extérieur de façon que, au moyen d'une rotation de la tige cylindrique sur son axe, on puisse faire varier l'angle d'action de l'aube (3) et qu'on puisse de même changer l'ensemble des aubes directrices par un simple dévissage de la chemise et le vissage postérieur de la chemise d'un autre ensemble. 2 - A machine according to claim 1, characterized in that each guide vane (3) is united to a cylindrical rod inserted and freely rotatable in a jacket (9) which can be screwed into one of the pass-through radial holes made in the fixed cylinders ( 2), this cylindrical rod being provided with an external end (6) in protuberance, adapted to be able to be rotated from the outside so that, by means of a rotation of the cylindrical rod on its axis, it is possible to make vary the angle of action of the blade (3) and that the set of guide vanes can also be changed by simply unscrewing the sleeve and the posterior screwing of the sleeve from another assembly. 3 - Une machine selon les revendications 1 et 2, caractérisée en ce qu'elle comporte des moyens d'entraîner ensemble et simultanément des extrémités des tiges cylindriques des aubes (3), afin de pouvoir changer ses angles d'action en même temps.  3 - A machine according to claims 1 and 2, characterized in that it comprises means for driving together and simultaneously the ends of the cylindrical rods of the blades (3), in order to be able to change its angles of action at the same time.
FR8606110A 1985-04-30 1986-04-28 EXTRUDER-TURBOMELANGEING MACHINE Expired FR2582251B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES543322A ES8607810A1 (en) 1985-04-30 1985-04-30 Turbomixer-extruder machine

Publications (2)

Publication Number Publication Date
FR2582251A1 true FR2582251A1 (en) 1986-11-28
FR2582251B1 FR2582251B1 (en) 1989-06-02

Family

ID=8489231

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8606110A Expired FR2582251B1 (en) 1985-04-30 1986-04-28 EXTRUDER-TURBOMELANGEING MACHINE

Country Status (4)

Country Link
DE (1) DE3613612A1 (en)
ES (1) ES8607810A1 (en)
FR (1) FR2582251B1 (en)
IT (1) IT1204325B (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
FR2815288A1 (en) * 2000-10-16 2002-04-19 Euratec Screw press comprises permeable sleeve housing two coaxial screws separated by with screw thread, blade projects from sleeve internal surface in zone occupied by bush

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JPS62231719A (en) * 1986-04-01 1987-10-12 Kobe Kikai Kk Extruder of rubber material
EP0303728B1 (en) * 1987-08-21 1991-09-11 Schumacher, Walter Dr. Ing. Apparatus for extruding, expanding and/or thermally processing materials or material blends
DE3805849A1 (en) * 1988-02-25 1989-09-07 Krupp Gmbh Pin extruder
DE3816422C2 (en) * 1988-05-13 1996-08-14 Krupp Ag Pen extruder
DE4006846A1 (en) * 1990-03-05 1991-09-12 Klein Alb Gmbh Co Kg DEVICE FOR MIXING FOUNDRY MOLDING MATERIALS
DE4010540C1 (en) * 1990-04-02 1991-11-07 Wilfried Dipl.-Ing. 3017 Pattensen De Baumgarten
DE4017558C2 (en) * 1990-05-31 1999-11-04 Battenfeld Extrusionstech Use of rotating bodies to vary the average cross section for the plastic material in planetary roller extruders
DE4244312C1 (en) * 1992-12-28 1994-01-20 Baumgarten Wilfried Screw extruder
ES2880393T3 (en) * 2017-10-17 2021-11-24 Buss Ag Asymmetric double wing worm shaft for a mixing and kneading machine

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FR2197635A1 (en) * 1972-09-01 1974-03-29 Werner & Pfleiderer
DE2405693A1 (en) * 1973-12-05 1975-06-12 Alberto Benadi Screw extruder back-pressure adjustment blades - adjacent to spherical portion of shaft between threaded regions
DE3150757A1 (en) * 1980-12-27 1982-07-22 Ishikawajima-Harima Jukogyo K.K., Tokyo Mixing apparatus for an extruder for plastic materials
US4408887A (en) * 1981-12-07 1983-10-11 Kishihiro Yamaoka Continuous kneader

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CH535117A (en) * 1970-12-22 1973-03-31 Sig Schweiz Industrieges Extruder
DE2235784C3 (en) * 1972-07-21 1986-01-09 Uniroyal Englebert Reifen GmbH, 5100 Aachen Single-screw extruder for mixing and homogenizing high-viscosity rubber compounds and high-viscosity thermoplastics
DE2435807C3 (en) * 1974-07-25 1978-03-09 Dynamit Nobel Ag, 5210 Troisdorf Device for controlling the pressure and the flow rate of plastic materials in a screw extruder
DE2634024B2 (en) * 1976-07-29 1980-05-08 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Screw extruder
DE2931387A1 (en) * 1979-08-02 1981-02-05 Continental Gummi Werke Ag Extrusion press for plastomers and elastomers - has radial kneading pins inserted in solid bridges across cooling jacket

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Publication number Priority date Publication date Assignee Title
US3169752A (en) * 1960-08-22 1965-02-16 Plastus S A Sa Homogenizing device for extruding or injecting machines in the treatment of thermoplastics
FR2197635A1 (en) * 1972-09-01 1974-03-29 Werner & Pfleiderer
DE2405693A1 (en) * 1973-12-05 1975-06-12 Alberto Benadi Screw extruder back-pressure adjustment blades - adjacent to spherical portion of shaft between threaded regions
DE3150757A1 (en) * 1980-12-27 1982-07-22 Ishikawajima-Harima Jukogyo K.K., Tokyo Mixing apparatus for an extruder for plastic materials
US4408887A (en) * 1981-12-07 1983-10-11 Kishihiro Yamaoka Continuous kneader

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2815288A1 (en) * 2000-10-16 2002-04-19 Euratec Screw press comprises permeable sleeve housing two coaxial screws separated by with screw thread, blade projects from sleeve internal surface in zone occupied by bush

Also Published As

Publication number Publication date
ES8607810A1 (en) 1986-06-01
DE3613612A1 (en) 1986-11-06
DE3613612C2 (en) 1992-02-20
IT8620247A0 (en) 1986-04-29
IT1204325B (en) 1989-03-01
FR2582251B1 (en) 1989-06-02
ES543322A0 (en) 1986-06-01

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