FR2635044A1 - Microextrusion unit particularly for powdered products - Google Patents
Microextrusion unit particularly for powdered products Download PDFInfo
- Publication number
- FR2635044A1 FR2635044A1 FR8810781A FR8810781A FR2635044A1 FR 2635044 A1 FR2635044 A1 FR 2635044A1 FR 8810781 A FR8810781 A FR 8810781A FR 8810781 A FR8810781 A FR 8810781A FR 2635044 A1 FR2635044 A1 FR 2635044A1
- Authority
- FR
- France
- Prior art keywords
- extrusion
- group according
- kneading
- micro
- ejection
- 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
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
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/482—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs
- B29B7/483—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs the other mixing parts being discs perpendicular to the screw axis
-
- 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
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/484—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws with two shafts provided with screws, e.g. one screw being shorter than the other
-
- 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
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/488—Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
- B29B7/489—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
- B29C48/25—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
- B29C48/40—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 using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/405—Intermeshing co-rotating 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
- B29C48/25—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
- B29C48/40—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 using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/42—Non-identical or non-mirrored 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
- B29C48/25—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
- B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
-
- 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
- B30B11/243—Extrusion presses; Dies therefor using screws or worms using two or more screws working in the same chamber
-
- 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
- B30B11/246—Screw constructions
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Formation And Processing Of Food Products (AREA)
Abstract
Description
La présente invention se rapporte à un groupe de micro-extrusion et, plus particulièrement, à une chambre de compression associée i un extrudeur. Cet ensemble est conçu tout spécialement pour réaliser de la micro-extrusion a partir de produits pulvérulents. The present invention relates to a micro-extrusion group and, more particularly, to a compression chamber associated with an extruder. This set is specially designed to carry out micro-extrusion from pulverulent products.
Les difficultés et contraintes de la microextrusion ne se limitent pas simplement a des conditions de travail exceptionnelles en raison de la pression plus élevée et de la miniaturisation des orifices de la filaire d' extrusion mais elles proviennent aussi des caractéristiques physico-chimiques des produits à extruder. The difficulties and constraints of microextrusion are not limited simply to exceptional working conditions due to the higher pressure and the miniaturization of the orifices of the extrusion wireframe but they also come from the physico-chemical characteristics of the products to be extruded .
Il en est ainsi des produits pulvérulents qui n8cessitent des précautions particulières pour l'obtention des résultats visés par 1' invention, c' est--dire la production de filets fins ou fils permettant une granulation industrielle ultérieure rapide et sans difficultés particulières. This is the case with pulverulent products which require special precautions in order to obtain the results targeted by the invention, that is to say the production of fine threads or threads allowing subsequent rapid industrial granulation and without particular difficulties.
La présente invention a pour but de permettre la micro-extrusion a des diamètres d'orifices très petits à partir de produits pulvérulents puis la pratique ultérieure d'une granulation industrielle simple, rapide et aise. The present invention aims to allow micro-extrusion to very small orifice diameters from powdered products and then the subsequent practice of simple, quick and easy industrial granulation.
A cet effet, elle se rapporte à un groupe de micro-extrusion comprenant un bâti gui supporte une trémie d' alimentation, un système de refroidissement et un ensemble mécanique formé d'un corps de presse terminé par une tête d'extrusion caractéris8 en ce que le corps de presse comprend deux vis de compression parallèles actionnant un dispositif rotatif de malaxage-éjection enfermé dans la tête d'extrusion et en ce que la tête d'extrusion est à BJ éjection latérale dont la surface latérale est équipée d'une micro-grille. To this end, it relates to a micro-extrusion group comprising a frame which supports a feed hopper, a cooling system and a mechanical assembly formed by a press body terminated by an extrusion head characterized in that that the press body comprises two parallel compression screws actuating a rotary kneading-ejection device enclosed in the extrusion head and in that the extrusion head is with BJ lateral ejection whose lateral surface is equipped with a micro -wire rack.
De nombreux avantages découlent de la présente invention tels que les plus importants indiqués ci-dessous:
obtention d'un produit extrudé plus facile à doser et
à manipuler facilité de transformer le produit extrudé en granulés
par les techniques classiques du roulage homogXnd4sation garantie du produit pulvérulent consommation peu élevée d'énergie par rapport au
résultat obtenu.Many advantages ensue from the present invention, such as the most important ones indicated below:
obtaining an extruded product which is easier to dose and
easy to transform the extruded product into granules
by conventional rolling techniques homogXnd4sation guarantees the pulverulent product low energy consumption compared to
obtained result.
La présente invention sera bien comprise à la lecture de la description qui suit, effectuée à titre d'exemple non limitatif sur un mode d'exécution en référence aux dessins accompagnants dans lesquels la figure 1 est une vue de profil du groupe de
micro-extrusion selon l'invention ; la figure 2 est une vue en plan du groupe de
micro-extrusion selon l'invention ; la figure 3 est une vue en coupe longitudinale du
corps de presse et de la tête d'extrusion selon une
première variante ; la figure 4 est une vue en coupe longitudinale du
corps de presse et de la tête d'extrusion selon une
deuxième variante ;; la figure 5 est une vue schématique en perspective du
mécanisme de malaxage-djection des deux variantes ci dessous; la figure 6 est une vue en coupe longitudinale du
corps de presse et de la tête d'extrusion selon une
troisième variante dite à haute pression la figure 7 est une vue schématique en perspective du
mécanisme double de malaxage-éjection de la variante
ci-dessue ;; les figures 8 et 9 sont des vues en coupe de section
droite illustrant deux autres variantes de formes
techniques du mécanisme de malaxage-éjection la figure 10 est une vue en coupe transversale de la
chambre de compression montrant la double enveloppe les figures de il et 12 sont des vues en coupe de
section droite des enveloppes d'extrusion respec
tivement simple et double, A sorties circonféren
tielles et latérales.The present invention will be clearly understood on reading the description which follows, carried out by way of nonlimiting example on an embodiment with reference to the accompanying drawings in which FIG. 1 is a profile view of the group of
micro-extrusion according to the invention; Figure 2 is a plan view of the group of
micro-extrusion according to the invention; Figure 3 is a longitudinal sectional view of the
press body and extrusion head according to a
first variant; Figure 4 is a longitudinal sectional view of the
press body and extrusion head according to a
second variant ;; Figure 5 is a schematic perspective view of
kneading-ejection mechanism of the two variants below; Figure 6 is a longitudinal sectional view of the
press body and extrusion head according to a
third variant known as high pressure Figure 7 is a schematic perspective view of
double kneading-ejection mechanism of the variant
above ;; Figures 8 and 9 are sectional section views
right illustrating two other variant shapes
techniques of the kneading-ejection mechanism FIG. 10 is a cross-sectional view of the
compression chamber showing the double envelope the figures of il and 12 are sectional views of
cross section of the extrusion casings respec
single and double, With circumferential outlets
tial and lateral.
Le groupe d'extrusion selon l'invention se compose des organes généraux suivants. The extrusion group according to the invention consists of the following general organs.
Un bâti 1 renferme les organes mécaniques 8' entraînement et supporte d' une part une trémie 2 d1 alimentation en produit pulvérulent et un ensemble de raccordement 3 du système de refroidissement 4 et d' autre part un ensemble mécanique 5 constituant le groupe proprement dit. A frame 1 encloses the mechanical organs 8 'drive and supports on the one hand a hopper 2 for supplying pulverulent product and a connection assembly 3 of the cooling system 4 and on the other hand a mechanical assembly 5 constituting the group proper.
Ce dernier s'étendant latéralement au bâti comprend un corps de presse 6 terminé par une tête d'extrusion 7 à sortie latérale. The latter extending laterally to the frame comprises a press body 6 terminated by an extrusion head 7 with lateral outlet.
Le corps de presse 6 est formé de deux vis de compression parallèles 8 et 9 logées dans une chambre dite de compression 10 dont une vis se prolonge vers 1' extension de cette chambre que constitue la tête d'extrusion 7 à sortie latérale. The press body 6 is formed by two parallel compression screws 8 and 9 housed in a so-called compression chamber 10, one screw of which extends towards the extension of this chamber which constitutes the extrusion head 7 with lateral outlet.
Les profis des vis sont ceux d'une vis classique à pas long ou d'une forme hélicoidale a large surfaces de portée permettant l'imbrication et un certain travail d' écrasement-étalement de la matière. The profes of the screws are those of a conventional screw with a long pitch or of a helical shape with large bearing surfaces allowing nesting and a certain work of crushing-spreading of the material.
La chambre de compression est du type à double enveloppe 11 et 12 permettant de faire circuler un fluide caloporteur dans le but d' évacuer une partie de la chaleur diffusée par le produit en mouvement de compression mécanique et de le maintenir ainsi dans les conditions de températue voulues. The compression chamber is of the double jacket type 11 and 12 making it possible to circulate a heat-transfer fluid with the aim of removing a part of the heat diffused by the product in movement of mechanical compression and thus maintaining it under the conditions of temperature. wanted.
La tête d' extrusion est conformée en chambre 13 délimitée par une micro-grille d'extrusion 14, simple ou double, constituée par une.tôle micro-perforie. The extrusion head is shaped as a chamber 13 delimited by an extrusion micro-grid 14, single or double, constituted by a micro-perforated sheet.
La diamètre des orifices est faible. il se situe autour d'une valeur indicative de imm. The diameter of the orifices is small. it is around an indicative value of imm.
La chambre de la tête d'extrusion renferme un mécanisme rotatif de malaxage-éjection 15 chargé d'amener le produit uniformément vers et de l'appliquer et de 1' étendre uniformément contre toute la surface passante de la paroi de la micro-grille. The chamber of the extrusion head contains a rotary kneading-ejection mechanism 15 responsible for bringing the product uniformly towards and applying it and spreading it uniformly against the entire passable surface of the wall of the micro-grid.
La version représentée sur la figure 6 est dite à haute pression, car la pression de fonctionnement se situe dans la gamme de 20-30 bars. The version shown in Figure 6 is said to be high pressure, since the operating pressure is in the range of 20-30 bars.
Dans cette version, les vis du corps de presse sont interpénétrantes, actionnant chacune un dispositif distinct de malaxage-éjection, par exemple du même type que celui de la version simple comme décrit ci-après. In this version, the screws of the press body are interpenetrating, each actuating a separate kneading-ejection device, for example of the same type as that of the simple version as described below.
Cette version plus performante comporte deux vis identiques 18 et 19 interpénétrantes, actionnant chacune un dispositif de malaxage distinct 20 et 21. This more efficient version comprises two identical screws 18 and 19 interpenetrating, each actuating a separate mixing device 20 and 21.
Le profil de ces vis est hélicoïdal à large surface de portée de manière à améliorer le travail de la matière. The profile of these screws is helical with a large bearing surface so as to improve the work of the material.
Les mécanismes de malaxage stinterpénètrent pour assurer un meilleur brassage et une meilleure application du produit contre les grilles. The kneading mechanisms interpenetrate to ensure better mixing and better application of the product against the grids.
Chaque mécanisme de malaxage-éjection comprend un rotor 22 constitué par exemple par la juxtaposition sur un méme axe 23 ou 24 de cames telles que 25 de forme générale ovoïde présentant chacune à chacune de leurs extrémités 26 et 27 un méplat 28 et 29 chargés de concentrer et d'appliquer le produit sous pression contre la portion adjacente de grille. Each kneading-ejection mechanism comprises a rotor 22 constituted for example by the juxtaposition on the same axis 23 or 24 of cams such as 25 of general ovoid shape each having at each of their ends 26 and 27 a flat 28 and 29 responsible for concentrating and applying the product under pressure against the adjacent portion of the grid.
Les cames sont décalées angulairement par exemple de 45" d'angle. Ce décalage assure le brassage suffisant du produit à extruder, mais aussi son application homogène contre la micro-grille d'extrusion. The cams are angularly offset, for example by 45 "angle. This offset ensures sufficient mixing of the product to be extruded, but also its homogeneous application against the extrusion micro-grid.
Cet effet est encore augmenté lorsque les cames des deux rotors s'interpénètrent. This effect is further increased when the cams of the two rotors interpenetrate.
En effet, dans ce cas, les parois de la chambre d'extrusion sont juxtaposées, légèrement décalées entre elles, comme représentées sur la figure Il. Indeed, in this case, the walls of the extrusion chamber are juxtaposed, slightly offset from each other, as shown in Figure II.
Les sorties sont périphériques, c'est-à-dire sur toute la surface latérale des grilles, ou latérales, version représentée sur la figure 12, dans laquelle seule une demi-surface latérale 30 et 31 de chaque cylindre est utilisée laissant des zones obscures 32 e- cylindre est utilisée laissant des zones obscures 32 et 33 de part et d'autre du plan de jonction 34 au niveau des lignes de raccordement. The outlets are peripheral, that is to say over the entire lateral surface of the grids, or lateral, version shown in FIG. 12, in which only a lateral half-surface 30 and 31 of each cylinder is used leaving obscure zones 32 e-cylinder is used leaving obscure areas 32 and 33 on either side of the junction plane 34 at the connection lines.
On peut également envisager de remplacer le rotor à cames du dispositif de malaxage-éjection par un rotor comprenant un axe 35 et au moins deux ailettes de brassage 36 et 37 légèrement cintrées et dont les extrémités libres sont en contact avec la surface latérale intérieure de la micro-grille pour étaler le produit et le racler contre ladite grille comme représenté sur la figure 8. It is also conceivable to replace the cam rotor of the kneading-ejection device with a rotor comprising an axis 35 and at least two stirring fins 36 and 37 slightly bent and whose free ends are in contact with the inner lateral surface of the micro-grid for spreading the product and scraping it against said grid as shown in FIG. 8.
L' effet de malaxage-éjection se trouve amélioré par l'emploi sur le meme axe de plusieurs rotors à ailettes décalées angulairement. The kneading-ejection effect is improved by the use on the same axis of several rotors with angularly offset fins.
Bien entendu, d' autres formes techniques conviennent également, par exemple une variante à excentriques représentée en coupe transversale sur la figure 9. Of course, other technical forms are also suitable, for example an eccentric variant shown in cross section in FIG. 9.
Selon cette variante, le rotor est formé d'une succession de tronçons cylindriques tels que 38, 39 et 40 montés de façon excentrée sur un axe 41. According to this variant, the rotor is formed of a succession of cylindrical sections such as 38, 39 and 40 mounted eccentrically on an axis 41.
Cette variante assure une application plus douce du produit contre la micro-grille tout en gardant 1' efficacité de brassage des mécanismes précédents. This variant ensures a smoother application of the product against the micro-grid while retaining the mixing efficiency of the previous mechanisms.
L'invention a été décrite ci-dessus en détail. The invention has been described above in detail.
I1 est bien entendu cependant que diverses modifications simples, adjonctions, variantes directes, substitutions par des moyens équivalents entrent dans le cadre de la prés ente protection. It is understood, however, that various simple modifications, additions, direct variants, substitutions by equivalent means fall within the scope of this protection.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR888810781A FR2635044B1 (en) | 1988-08-05 | 1988-08-05 | MICRO EXTRUSION GROUP, IN PARTICULAR FOR POWDER PRODUCTS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR888810781A FR2635044B1 (en) | 1988-08-05 | 1988-08-05 | MICRO EXTRUSION GROUP, IN PARTICULAR FOR POWDER PRODUCTS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2635044A1 true FR2635044A1 (en) | 1990-02-09 |
| FR2635044B1 FR2635044B1 (en) | 1994-09-16 |
Family
ID=9369268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR888810781A Expired - Fee Related FR2635044B1 (en) | 1988-08-05 | 1988-08-05 | MICRO EXTRUSION GROUP, IN PARTICULAR FOR POWDER PRODUCTS |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2635044B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0522390A1 (en) * | 1991-07-11 | 1993-01-13 | FRIEDRICH THEYSOHN GmbH | Twin screw extruder |
| WO1998041390A1 (en) * | 1997-03-20 | 1998-09-24 | Koch Feed Technologies Company | Extrusion apparatus |
| EP2093037A2 (en) | 2008-02-25 | 2009-08-26 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Kneading disc segment and twin-screw extruder |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2485854A (en) * | 1948-04-10 | 1949-10-25 | Pirelli | Mixer for plastic materials |
| FR954689A (en) * | 1950-01-04 | |||
| CH347637A (en) * | 1955-07-18 | 1960-07-15 | Wacker Chemie Gmbh | Device for granulating plastic masses |
| US3122356A (en) * | 1958-08-23 | 1964-02-25 | Bayer Ag | Worm arrangement |
| US3240169A (en) * | 1961-02-20 | 1966-03-15 | Thomas W Cunningham | Pelleting machine |
| GB1110881A (en) * | 1965-04-28 | 1968-04-24 | Baker Perkins Chem Mach | Continuous mixer |
| FR1554035A (en) * | 1967-01-12 | 1969-01-17 | ||
| US3446485A (en) * | 1966-09-22 | 1969-05-27 | Colgate Palmolive Co | Mixing apparatus |
| US3618902A (en) * | 1969-11-14 | 1971-11-09 | Teledyne Inc | Continuous mixer |
| FR2347169A1 (en) * | 1976-04-06 | 1977-11-04 | Pallmann Kg Maschf | AGGLOMERATION DEVICE FOR SHEETS OF PLASTIC MATERIAL |
-
1988
- 1988-08-05 FR FR888810781A patent/FR2635044B1/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR954689A (en) * | 1950-01-04 | |||
| US2485854A (en) * | 1948-04-10 | 1949-10-25 | Pirelli | Mixer for plastic materials |
| CH347637A (en) * | 1955-07-18 | 1960-07-15 | Wacker Chemie Gmbh | Device for granulating plastic masses |
| US3122356A (en) * | 1958-08-23 | 1964-02-25 | Bayer Ag | Worm arrangement |
| US3240169A (en) * | 1961-02-20 | 1966-03-15 | Thomas W Cunningham | Pelleting machine |
| GB1110881A (en) * | 1965-04-28 | 1968-04-24 | Baker Perkins Chem Mach | Continuous mixer |
| US3446485A (en) * | 1966-09-22 | 1969-05-27 | Colgate Palmolive Co | Mixing apparatus |
| FR1554035A (en) * | 1967-01-12 | 1969-01-17 | ||
| US3618902A (en) * | 1969-11-14 | 1971-11-09 | Teledyne Inc | Continuous mixer |
| FR2347169A1 (en) * | 1976-04-06 | 1977-11-04 | Pallmann Kg Maschf | AGGLOMERATION DEVICE FOR SHEETS OF PLASTIC MATERIAL |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0522390A1 (en) * | 1991-07-11 | 1993-01-13 | FRIEDRICH THEYSOHN GmbH | Twin screw extruder |
| US5302106A (en) * | 1991-07-11 | 1994-04-12 | Friedrich Theysohn Gmbh | Double-worm extruder with polygonal-disk kneader |
| WO1998041390A1 (en) * | 1997-03-20 | 1998-09-24 | Koch Feed Technologies Company | Extrusion apparatus |
| US6099288A (en) * | 1997-03-20 | 2000-08-08 | Mp6, L.L.C. | Pellet forming extrusion apparatus |
| EP2093037A2 (en) | 2008-02-25 | 2009-08-26 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Kneading disc segment and twin-screw extruder |
| EP2093037A3 (en) * | 2008-02-25 | 2009-09-02 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Kneading disc segment and twin-screw extruder |
| US8132957B2 (en) | 2008-02-25 | 2012-03-13 | Kobe Steel, Ltd. | Kneading disc segment and twin-screw extruder |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2635044B1 (en) | 1994-09-16 |
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