EP0265429A1 - Appareil de melange modulaire pour materiau extrude - Google Patents

Appareil de melange modulaire pour materiau extrude

Info

Publication number
EP0265429A1
EP0265429A1 EP86903030A EP86903030A EP0265429A1 EP 0265429 A1 EP0265429 A1 EP 0265429A1 EP 86903030 A EP86903030 A EP 86903030A EP 86903030 A EP86903030 A EP 86903030A EP 0265429 A1 EP0265429 A1 EP 0265429A1
Authority
EP
European Patent Office
Prior art keywords
extruder
sleeve
barrel
extruded material
mixing apparatus
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.)
Withdrawn
Application number
EP86903030A
Other languages
German (de)
English (en)
Inventor
Desider G. Csongor
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.)
NORTHERN LIGHTS TRUST OF FEBR 14 1978
Northern Lights Trust of February 14 1978
Original Assignee
NORTHERN LIGHTS TRUST OF FEBR 14 1978
Northern Lights Trust of February 14 1978
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 NORTHERN LIGHTS TRUST OF FEBR 14 1978, Northern Lights Trust of February 14 1978 filed Critical NORTHERN LIGHTS TRUST OF FEBR 14 1978
Publication of EP0265429A1 publication Critical patent/EP0265429A1/fr
Withdrawn legal-status Critical Current

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
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • 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
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/422—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with screw sections co-operating, e.g. intermeshing, with elements on the wall of the surrounding casing
    • 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
    • B29C48/256—Exchangeable extruder parts
    • B29C48/2564—Screw parts
    • 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
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/84—Venting or degassing ; Removing liquids, e.g. by evaporating components
    • B29B7/845—Venting, degassing or removing evaporated components in devices with rotary stirrers
    • 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

  • This invention is a continuation in part of application Serial No. 298,065 filed August 31, 1981. It is a chief object of the invention to provide a rotary modular mixing apparatus which is independently driven to provide for either constant or variable speeds of rotation.
  • Another object of the invention is to devise independently driven modular mixing apparatus having a plurality of rotating shear ring means combined with a stationary sleeve element by means of which laminar displacement of a fluid material is achieved.
  • Another object is to provide for separating laminar displaced material into spaced apart streams of material, each of which streams may be driven at variable or constant speeds of rotation to become cut off and undergo additional laminar displacement.
  • Still another object of the invention is to combine with a main extr ⁇ der screw and barrel a sleeve member for receiving extruded material leaving the barrel and moving the extruded material in a helical path of travel about an axis which extends transversely with respect to the axis of the main extruder screw.
  • Another object is to provide variable speed means for retrofitting an extruder where an appreciable percentage of relatively viscous or unmelted materials resist mixing and blending and require intensive extruder processing.
  • the combined effect of laminar displacement of fluid material at variable or constant speeds followed by travelling the displaced material along undulating linear paths of short axial length to undergo further laminar displacement operates to achieve a high degree of intimate mixing and blending by which substantially all material in the fluid mass which is not in a fluid state is converted into a part of a homogenous product.
  • Figure 1 is an elevational view illustrating a basic component assembly of one desirable form of modular extruder apparatus of the invention combined with an extruder barrel which is shown fragmentarily.
  • Figure 2 is a diagrammatic view of conventional plastic processing apparatus including an extruder screw, an extruder barrel and portions of a die shown in cross section with which a modular mixing apparatus of the invention is combined.
  • Figure 3 is a cross section taken on the line
  • Figure 4 is an exploded view showing in further detail the component parts of the modular extruder apparatus shown in Figures 2 and 3.
  • Figure 5 is a cross section taken on the line 5-5 of Figure 3.
  • Figure 6 is a cross section taken on the line 6-6 of Figure 3.
  • Figure 7 is a cross section taken on the line 7-7 of Figure 3.
  • Figure 8 is a cross section taken on the line 8-8 of Figure 3.
  • Figure 9 is a cross section taken on the line 9-9 of Figure 3.
  • Figure 10 is an end elevational view showing a dispersing tip element in the modular mixing apparatus.
  • Figure 11 is a fragmentary perspective view showing the component parts of the mixing apparatus of Figures 2 and 3 and indicating portions of a barrel member having been broken away to indicate by arrows a changing flow of material along undulating parhs of travel of short axial length.
  • Figure 12 is a fragmentary cross sectional view showing portions of the mixing apparatus and indicating rotational direction of the various modules.
  • Figure 13 is a cross sectional view taken on the line 13-13 of Figure 12 illustrating diagrammatically one path of flow of fluid material.
  • Figures 15, 16, 17, 18, 19 and 20 are additional views similar to Figure 13 but taken on respective cross sectional lines 15-15, 16-16, 17-17, 18-18, 19-19 and 20-20.
  • Figure 21 is a fragmentary cross sectional view of a modified form of mixing apparatus of the invention and particularly showing the com-ination of kneading block apparatus comb ined with the rotating screw driver shaft.
  • Figure 22 is a fragmentary cross sectional view of a barrel member showing mixing apparatus of the invention corresponding to the assemb ly shown in Figure 21.
  • Figure 23 is a cross section taken on the line 23-23 of Fiqure 22.
  • Figure 24 is a cross sectional view illustrating an extruder member having shearing lugs and a sleeve member having annular channels in which the lugs are engageable.
  • Figure 25 is a cross section taken on the line 25-25 of Figure 24.
  • Figure 26 is a side elevational view illustrating improved extruder mixing of the invention provided with independent drive means and connected to an extruder screw barrel.
  • Figure 27 is a plan view of the structure shown in Figure 26.
  • Figure 28 is another view of the structure shown in Figure 27.
  • Figure 29 is a detail end elevational view.
  • Figure 30 is a cross sectional view of the mixing apparatus of the invention provided with a plurality of modules and connected to a separate extruder barrel of the class disclosed in Figures 1-23.
  • Figure 31 is a cross section taken on the line 31-31 of Figure 30.
  • Figure 32 is a cross section taken on the line
  • Figure 33 is a cross section taken on the line 33-33 of Figure 32.
  • Figure 34 is a detail cross sectional view.
  • Figure 35 is another detail cross sectional view taken on the line 35-35 of Figure 30.
  • Figure 36 is a fragmentary cross sectional view of improved mixing apparatus of the invention provided with lower pressure hopper means.
  • Figure 37 is a cross sectional view taken on the line 37-37 of Figure 36.
  • Figure 38 is a detail cross sectional view illustrating a devolatizing port.
  • Figure 39 is a detail cross sectional view of additional modules independently driven.
  • Figure 40 is a detail cross sectional view taken on the line 40-40 of Figure 39.
  • Figure 41 is a plan view illustrating another form of mixing module apparatus with special gear pump.
  • Figure 42 is a schematic view illustrating still another form of mixing apparatus with special gear pump.
  • Figure 23 is a plan view of an extruder screw barrel similar to those shown in Figures 1-23, but clamped to the extruder barrel output end and provided with independent drive means.
  • Figure 44 is a view similar to Figure 43 but having a single connection.
  • the modular mixing apparatus of the invention may be operated at a constant speed of rotation which depends upon the speed of rotation of an extruder screw and operation may also be carried out at variable speeds of rotation where independent power driving means are employed.
  • FIGS. 1-23 illustrate processing modules of the constant speed form and Figrues 24-40 illustrate the processing modules which include independent drive means for employing variable speeds of rotation.
  • Desirable mixing results are obtained with either dependent drive or independent drive.
  • laminar displacement of materials is carried out employing a basic component assembly of modules including a shaft, spaced apart shear rings rotable with the shaft and a stationary sleeve located between the shear ring elements in abutting relation therewith.
  • a basic component assembly of modules including a shaft, spaced apart shear rings rotable with the shaft and a stationary sleeve located between the shear ring elements in abutting relation therewith.
  • variable speeds of rotation of the processing module may be a function of a specific product mix.
  • Figures 2-23 illustrate other modular mixing apparatus having various processing modules combined in one form or another with the basic component assembly noted above.
  • the apparatus of Figure 2 may, for example, be supported on a bed plate P and may include a feed section having a hopper H into which plastic material is furnished in the usual manner to an extruder screw S received within a barrel B and power driven through a reduction gearing R by a motor M.
  • T denotes thermal control means in communication with the extruder barrel.
  • screw S may have a length which is twenty times the the diameter of the screw S including a feed section of five diameters, a transition section of seven diameters, a metering section of six diameters and a mixing section of two diameters.
  • this mixing section of two diameters is located the modular mixing apparatus of the invention and it should be understood that this modular mixing apparatus, as hereinafter described in detail, may be combined with an extruder screw having a length of 18 diameters or other lengths as an original construction.
  • the screw may be cut to a length of 18 diameters, for example, and then retrofitted with the modular mixing apparatus of the invention by internally threading the cut off end of the screw S and attaching a reduced threaded end of the invention mixer apparatus therein.
  • numeral 1 denotes a main shaft having a reduced threaded extremity IA which is securely engaged in an internally threaded end of screw S.
  • An opposite end of main shaft 1 has integrally formed therewith a shear ring portion IB.
  • Sleeve 2 is also positioned with one end in abutting relation to the shear ring portion IB.
  • a separately formed shear ring element 3 which is solidly secured between the extruder screw S and an annular shoulder portion 1C of shaft 1 and is rotatable therewith.
  • This basic component assembly including the main shaft 1, sleeve 2 and shear ring means 1 and IB is also shown in Figures 2, 3 and 4 com-ined with other modular components for another processing mode and is still further shown in Figures 21-23 combined with different component means and still other processing modes.
  • opposite ends of the stationary sleeve 2 will be subjected to wear when the shear ring portions IB and separately formed shear ring 3 are beingrotated by main shaft 1.
  • the sleeve 2 in one preferred embodiment, may have opposite ends thereof provided with hardened bearing portions as 2A and 2B. Extending inwardly of sleeve 2 and downwardly from the hardened bearing portions 2B is a conical surface 2C.
  • conical surface 2D extending inwardly and downwardly from bearing 2A is another conical surface 2D.
  • These conical surfaces are formed to provide for controlling the thickness of laminar displacement carried out by movement of the shear ring 3 and shear ring portion 1B. Increasing or decreasing the depth of these conical surfaces varies the thickness of each laminar cut off by a blade and provides a desirable range of thickness controlled.
  • the sleeve 2 has an inner peripheral surface occurring in spaced relation to the main shaft 1 and this inner peripheral surface is further constructed with spaced apart axially extending grooves as 2G more clearly shown in Figures 4 and 9. These grooves function to receive sheared portions of fluid material cut off by the shearing blades and to provide for a plurality of streams of material being diverted and guided along a plurality of linear paths of travel between the sleeve and the shaft 1.
  • the shear ring 3 is formed with radially extending shearing blades as 3A, 3B, 3C, etc. These shearing blades are spaced apart to provide passageways through which extruded material may pass. Extending between the blades 3A, 3B, 3C, etc. are inwardly inclined sloping surfaces as 3D, 3E, 3F, etc. Similarly, the shear ring portion 1B is formed with radially extending shearing blades as 1D, 1E, 1F, etc.
  • FIG. 13 illustrates the portions of material in diagra-matic form.
  • each of the laminae displaced is regulated by the depth of the conical surface 2D of sleeve 2.
  • FIG. 14 shows diagrammatically these separated streams of material denoted by reference characters M1, M2, M3, M4, M5 and M6.
  • FIG 15 indicates diagrammatically flow of displaced material M8. Portions of material thus subdivided are merged together in a helically moving mass MO as suggested diagrammatically in Figure 16 and quickly undergoes another step of laminar displacement by shear ring 7, as indicated diagrammatically by portions of material MP in Figure 17.
  • the metering module 4 discharges the finally mixed and blended product described which is shown for example at the end of the apparatus illustrated in Figure 2.
  • Figure 4 there is illustrated a processing mode by means of which increased shearing and mixing may be carried out depending upon the material being dealt with.
  • this modular mixing apparatus the same component assembly is employed including the main shaft 1, sleeve 2 and shear ring means 3 and IB.
  • shear ring member 7 having a threaded end 7' which is threaded into the internally formed threads of ring portion 1A to become rotatable therewith.
  • the member 7 is formed with internally constructed threads as 7H and have outwardly projecting shearing blades as 12A, 12B, 12C, etc. These blades, unlike the blades of ring portion 1A, are not parallel to the central axis of the extruder screw but are skewed and extend angularly with respect to the central longitudinal axis of the ring 7.
  • the member 5 is formed with a threaded end 5E which is detachably secured in threaded relationship with member 7.
  • the member 5 is also shaped with a conical end face and material passing through the openings denoted by arrow 5 in the extruder tip end to be forced along converging paths of travel for desirable communication with the die member. Material passing through the blades of shear ring
  • a final step of laminar displacement to subdivide these streams of material is carried out by movement of the dispersing tip 5 against the stationary sleeve 6 and this provides portions as MJ indicated diagrammatically in Figure 19.
  • a resulting mixture MK is then led through the dispersing tip and leaves the tip as a converging stream indicated by the arrows in Figure 20.
  • Figure 21 another mode of mixing has been illustrated in which there is employed the same basic component assembly including parts 1, 2, 3, and 1B; however, in place of the second shear ring 1B a kneading rotor denoted by numeral 8 which is rotatable against the stationary sleeve 6, as shown in Figures 21, 22 and 23.
  • the kneading rotor component 8 is formed with a threaded end 8A and is provided with internal threads 8B. It will be noted that the kneading rotor is constructed with oblong shaped bars or arms which extend radially outward and occur in angularly disposed relationship with respect to one another, as shown in Figures 4, 21, 22 and 23. It has been found that a kneading and streatching of some fluid masses at this point in the processing can be carried out to provide further desirable attenuation and mixing of certain fluid materials.
  • Figures 26 through 44 illustrate modular mixing apparatus including a plurality of modules, all of which are also provided with independent drive means.
  • a further desirable blending of material is realized by converting a mass of materials moving in a helical path about the central axis of the main extruder screw into a mass of materials moving in a helical path about an axis extending transversely to the axis of the main extruder screw. In thus diverting the flow of material, minute portions of the extruded material are stripped off and then recombined in an improved and highly desirable manner.
  • the basic component assembly includes an extruder member 100 mounted for rotation in a stationary sleeve 102 fixed inside the barrel 104.
  • the stationary sleeve 102 is formed with internally grooved surfaces or flutes denoted by numeral 106. Portions of the stationary sleeve 102 is further recessed to form annular channels 108 in which channels are rotatably engaged, shearing lugs as 110 on the extruder member. It will be noted that the annular channels intersect internally grooved surfaces 106 and as a result rotative movement of the shearing lugs operate to cut off small sections of streams of material being forced through the internally grooved surfaces of the stationary member and further laminar displacement may take place. It is intended that the extruder 100 be independently driven by an arrangement of parts such as is illustrated in Figure 26 and it may be also desired to have member 100 attached to a main extruder screw, as shown in Figures 1-23.
  • FIG. 26 there is illustrated a basic component assembly in which an extruder member 110 is received in a barrel 112 and drives a shaft 114 and affixed thereto are shear rings 116 and 113 arranged in abutting relation to opposite ends of a stationary sleeve 120.
  • the stationary sleeve 120 has internally grooved surfaces similar to those illustrated in Figure 4 and the shear rings also correspond to the shear rings as shown at the right hand side of Figure 4.
  • the extruder member 110 is provided with variable speed drive means including a motor M and reduction gears as 122 and 124.
  • the barrel 112 is formed with an inlet port 126 which is clamped to extruder barrel 130. The extruded material introduced through the inlet port onto the extruder member 110 is advanced through the stationary sleeve and shear ring assembly in the manner earlier described.
  • FIGs 27-29 there is illustrated a typical extruder screw and barrel assembly including a feed section 134, a transition control section 136 and a metering section 138. These sections are of the customary form in detailing with many extruded materials.
  • a hopper 140 provides for feeding materials to be mixed into an extruder screw 142 in a barrel 144 which is activated by power driving means 146.
  • the mixing apparatus of the invention is clamped to the extremity of barrel 144 as viewed in Figures 27 and 28 and includes a barrel 150 having an extruder member 152 arranged to receive extruded material from screw 142.
  • extruder member 152 extends sub- stantially at right angles to the extruder screw 142 and barrel 144 and includes independent drive means 154 which is operable to drive a pluarlity of modules denoted by numerals 156, 158, 160 and 162, also shown on a larger scale in Figure 30.
  • Figure 30 is the provision of low pressure feed inlets 164 and 166 which may be employed to introduce materials into any one of the mixing modules 156, 158, 160 and 162 and these materials may be efficiently mixed together by using
  • a reduced diameter means lower pressure which means low infeed pressure, instead of high pressure infeed which requires gear pumps.
  • an independently driven extruder 176 is mounted in a barrel 172 having a stationary sleeve 174 therein.
  • Numeral 170 denotes a hopper which is arranged to introduce relatively large particles of a material which is difficult to introduce in a standard extruder screw. The material is applied to the extruder prior to entering the sleeve 174, which may be advantageous with some additives.
  • Figure 38 there is illustrated production in an independently driven extruder of a devolitizing post 182 located through a barrel 182 at a point where gases may form.
  • Figures 39 and 40 illustrate a kneading module combined with a barrel 190 having an independently driven extruder 198.
  • An inlet post 200 receives extruded materials from a barrel 204 of a conventional extruder screw assembly.
  • Figure 41 illustrates the combination of feed means as 216 for low-pressure additives with a gear pump 220. Also illustrated are temperature probes as 218 219. The hopper provides for adding solid additives directly in front of the gear pump 220.
  • Figure 42 illustrates another gear pump 236 for use with an extruder 214 which is independently driven to receive material from an extruder 234.
  • Figures 43 and 44 illustrate an extruder screw for receiving additives in a hopper 248 and advancing extruded material through an angularly exposed conduit 244 clamped to the end of 246 in a position to drive extruded material into a barrel 240 in which are received independently driven modules as suggested in broken lines.

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

Appareil de mélange modulaire amélioré conçu de manière à fonctionner avec des moyens d'entraînement indépendants pour la rotation dans un manchon fixe séparé, le matériau extrudé qui quitte la vis extrudeuse principale et le cylindre étant introduit dans le module de mélange. L'appareil de mélange peut sous cette forme être entraîné à des vitesses variables indépendantes de la vitesse de la vis extrudeuse principale. Ledit appareil de mélange modulaire comprend également un module de cisaillement à ergots de conception nouvelle. Ledit module de cisaillement à ergots permet une subdivision considérablement atténuée du matériau grâce à l'utilisation d'ergots de cisaillement (110) fonctionnant en combinaison avec des canaux de cisaillement annulaires (108) formés dans le manchon fixe. Le module de cisaillement à ergots combiné avec un assemblage à composants de base décrit dans la présente invention peut faire l'objet d'une application, lors du traitement de certains matériaux, comme module de traitement unique en particulier lorsqu'il est entraîné à des vitesses de rotation dont l'accroissement est approprié. Il est également clair que le module de cisaillement à ergots peut également dans certaines circonstances désirées être entraîné par une vis extrudeuse conventionnelle.
EP86903030A 1986-04-24 1986-04-24 Appareil de melange modulaire pour materiau extrude Withdrawn EP0265429A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1986/000872 WO1987006523A1 (fr) 1986-04-24 1986-04-24 Appareil de melange modulaire pour materiau extrude

Publications (1)

Publication Number Publication Date
EP0265429A1 true EP0265429A1 (fr) 1988-05-04

Family

ID=22195468

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86903030A Withdrawn EP0265429A1 (fr) 1986-04-24 1986-04-24 Appareil de melange modulaire pour materiau extrude

Country Status (2)

Country Link
EP (1) EP0265429A1 (fr)
WO (1) WO1987006523A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9210720D0 (en) * 1992-05-20 1992-07-08 Holyroyd Associates Limited Production of feedstock for compounding of polymeric materials
GB2278118A (en) * 1993-05-20 1994-11-23 Holroyd Associates Ltd Carbon black incorporation in polymeric material
DE102004052055B4 (de) * 2004-10-26 2014-11-20 Blach Verwaltung Gmbh & Co.Kg Extruder

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Publication number Priority date Publication date Assignee Title
US1487208A (en) * 1922-12-13 1924-03-18 Turbinator Company Inc Agitating and mixing device
DE1224468B (de) * 1957-11-22 1966-09-08 Ici Ltd Mischapparatur zum Mischen von thermoplastischem polymerem Material
GB841743A (en) * 1958-03-21 1960-07-20 Ici Ltd Improvements in or relating to mixing apparatus
GB930339A (en) * 1961-05-01 1963-07-03 Metal Box Co Ltd Improvements in or relating to the extrusion of molten thermoplastic material
DE2162709C3 (de) * 1971-12-17 1974-12-05 Vereinigung Zur Foerderung Des Instituts Fuer Kunststoffverarbeitung In Industrie Und Handwerk An Der Rhein.-Westf. Techn.Hochschule Aachen E.V., 5100 Aachen Mischvorrichtung für eine drehbare und axial verschiebbare Plastifizierschnecke
US3936038A (en) * 1974-08-14 1976-02-03 Package Machinery Company Mixer for plastic injection molding machine
US3942774A (en) * 1975-02-28 1976-03-09 Beloit Corporation Method of and means for effecting redistributive mixing in an extruder
US4447156A (en) * 1981-08-31 1984-05-08 Northern Lights Trust Modular mixing apparatus including interchangeable fluid processing means
US4408887A (en) * 1981-12-07 1983-10-11 Kishihiro Yamaoka Continuous kneader

Non-Patent Citations (1)

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Title
See references of WO8706523A1 *

Also Published As

Publication number Publication date
WO1987006523A1 (fr) 1987-11-05

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