DE2065841A1 - Mixer for two or more pref. chemically reactive plastics components - has a transversely displaceable barrier or baffle between inlets and outlet - Google Patents
Mixer for two or more pref. chemically reactive plastics components - has a transversely displaceable barrier or baffle between inlets and outletInfo
- Publication number
- DE2065841A1 DE2065841A1 DE2065841*A DE2065841A DE2065841A1 DE 2065841 A1 DE2065841 A1 DE 2065841A1 DE 2065841 A DE2065841 A DE 2065841A DE 2065841 A1 DE2065841 A1 DE 2065841A1
- Authority
- DE
- Germany
- Prior art keywords
- mixing chamber
- mixing
- outlet
- baffle
- components
- 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
- 239000004033 plastic Substances 0.000 title claims abstract description 9
- 229920003023 plastic Polymers 0.000 title claims abstract description 9
- 230000004888 barrier function Effects 0.000 title abstract 2
- 239000000203 mixture Substances 0.000 claims description 12
- 239000004604 Blowing Agent Substances 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 4
- 210000000056 organ Anatomy 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/76—Mixers with stream-impingement mixing head
- B29B7/7663—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube
- B29B7/7673—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube having additional mixing arrangements
-
- 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
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/72—Measuring, controlling or regulating
- B29B7/728—Measuring data of the driving system, e.g. torque, speed, power, vibration
-
- 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
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/76—Mixers with stream-impingement mixing head
- B29B7/7631—Parts; Accessories
- B29B7/7636—Construction of the feed orifices, bores, ports
- B29B7/7642—Adjustable feed orifices, e.g. for controlling the rate of feeding
-
- 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
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/76—Mixers with stream-impingement mixing head
- B29B7/7663—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube
- B29B7/7684—Parts; Accessories
- B29B7/7689—Plunger constructions
- B29B7/7694—Plunger constructions comprising recirculation channels; ducts formed in the plunger
-
- 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
- B29B7/802—Constructions or methods for cleaning the mixing or kneading device
- B29B7/803—Cleaning of mixers of the gun type, stream-impigement type, mixing heads
- B29B7/805—Cleaning of the mixing conduit, module or chamber part
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
Ausscheidung aus Anlage zum Schreiben vom 15.12.1975Eliminated from the annex to the letter dated December 15, 1975
P 20 65 057.1-16 TK 100/A III P 20 65 057.1-16 TK 100 / A III
Vorrichtung zum Erzeugen eines vorzugsweise chemisch reaktionsfähigen Gemisches aus KunststoffkomponentenDevice for generating a preferably chemically reactive mixture of plastic components
Die Erfindung bezieht sich auf eine Vorrichtung zum Erzeugen eines vorzugsweise chemisch reaktionsfähigen Gemisches aus Kunststoffkomponenten nach dem Oberbegriff des Anspruchs 1 (vgl. DT-PS 12 82 522).The invention relates to a device for generating a preferably chemically reactive mixture made of plastic components according to the preamble of claim 1 (see. DT-PS 12 82 522).
Vorrichtungen dieser Art Öffnen und schließen gleichzeitig die Eintrittsöffnungen für die einzelnen Kunststoffkomponenten zur Mischkammer in jeweils einem die Gemischbildung in der Mischkammer und den Gemischausstoß aus der Mischkammer umfassenden und bewirkenden Bewegungszyklus des Steuerorgans. Mit dem Gemischausstoß verbunden ist die Reinigung der Mischkammerwand von Gemischresten mit Hilfe des Steuerorgans.Devices of this type open and close at the same time the inlet openings for the individual plastic components to the mixing chamber in one each Mixture formation in the mixing chamber and the mixture ejection from the mixing chamber comprising and causing movement cycle of the control member. Associated with the mixture output is the cleaning of the mixing chamber wall of mixture residues with the help of the control device.
Das gegenseitige Vermischen der einzelnen Komponenten erfolgt zunächst dadurch, daß die Komponenten in entsprechender Weise in die Mischkammer strömen und dabei aufeinanderprallen. Eine Bedeutung für den Grad der Ver-The mutual mixing of the individual components initially takes place in that the components flow in a corresponding manner into the mixing chamber and thereby collide. A meaning for the degree of
609821/036?609821/036?
KRAUSS-MAFFEI -AKTIENGESELLSCHAFT · 800 0 MÜNCHEN 5KRAUSS-MAFFEI -AKTIENGESELLSCHAFT 800 0 MUNICH 5
206584Ί206584Ί
mischung hat jedoch auch der Mischungsdruck, d.h. der Druck, der während der Vermischung herrscht. Es ist bekannt, das vordere Ende der Mischkammer mit einer Verengung (Düse) zu versehen (GB-PS 863 843). Bei dieser Ausführungsform ist jedoch die Reinigung der Mischkammer durch das Steuerorgan nicht sichergestellt. Eine diesbezügliche Verbesserung wurde gemäß der DT-PS 12 82 522 erzielt. Dort mußte jedoch auf einen Mischungsvordruck verzichtet werden.mixture, however, also has the mixing pressure, i.e. the Pressure that prevails during mixing. It is known to have the front end of the mixing chamber with a constriction (Nozzle) to be provided (GB-PS 863 843). In this embodiment, however, is the cleaning of the mixing chamber not ensured by the control organ. An improvement in this regard was achieved in accordance with DT-PS 12 82 522. There, however, a mixture form had to be dispensed with.
Der Erfindung liegt die Aufgabe zugrunde, bei einer durch ein Steuerorgan vollständig reinigungsfähigen Mischkammer einen Mischungsvordruck zu erzielen.The invention is based on the object of a mixing chamber that can be completely cleaned by a control element to achieve a mixing pre-pressure.
Diese Aufgabe wird erfindungsgemäß durch die Maßnahme nach dem Kennzeichen des Anspruchs 1 gelöst. Dadurch kann bei einer am Austrittsende eine Verengung nicht aufweisenden Mischkammer nicht nur ein Mischungsdruck auf einfache Weise erreicht, sondern dieser auch gesteuert werden, ohne daß die Möglichkeit der Reinigung der Mischkammer beeinträchtigt wird, über den Mischungsdruck kann in einfacher Weise auch die in die Mischkammer zuströmende Menge der Komponenten beeinflußt werden.According to the invention, this object is achieved by the measure solved according to the characterizing part of claim 1. As a result, there is no constriction in one at the outlet end Mixing chamber not only achieves a mixing pressure in a simple manner, but this can also be controlled without that the possibility of cleaning the mixing chamber is impaired, over the mixing pressure can be in easier Way, the amount of the components flowing into the mixing chamber can also be influenced.
609821/0367609821/0367
- 3 KRAUSS-MAFFEI · AKTIENGESELLSCHAFT · 8000 MÜNCHEN 5- 3 KRAUSS-MAFFEI · AKTIENGESELLSCHAFT · 8000 MUNICH 5
10658411065841
Bei Verarbeitung von mit Blähmitteln versetzten Komponenten besteht durch Veränderung des Mischungsdrucks die vorteilhafte Möglichkeit, die Porenstruktur und das Äußere des Formkörpers zu beeinflussen.When processing components mixed with blowing agents, there is a change in the mixing pressure the advantageous possibility of influencing the pore structure and the exterior of the molded body.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt, das nachstehend näher erläutert wird. Dabei zeigen:In the drawing, an embodiment of the invention is shown, which is explained in more detail below will. Show:
Fig. 1 den Längsmittelschnitt einer Mischkammervorrichtung1 shows the longitudinal center section of a mixing chamber device
und
Fig. 2 einen quer zum Längsmittelschnitt nach Fig. 1 und dieser gegenüber in vergrößertem Maßstab durch
einen Teil der Mischkammervorrichtung gelegten Schnitt.and
FIG. 2 shows a cross-section to the longitudinal center section according to FIG. 1 and this opposite section, on an enlarged scale, through part of the mixing chamber device.
Zum Herstellen von spezifisch verhältnismäßig leichten
Kunststoff-Formlingen werden im Beispielsfall zwei Polyurethan-Komponenten,
von denen eine mit einem Blähmittel versetzt " ist, über gesonderte Speiseleitungen 1 einer Mischkammer 2
zugeführt, in dieser im Gegenstrom innig miteinander vermischt und anschließend in einen nicht gezeigten Formhohlraum
eingebracht. Das Gemisch schäumt in dieser unter der Wirkung des Blähmittels auf und härtet durch die einsetzende
Reaktion unter Ausbildung einer die Formfläche konturgetreu nachbildenden massiven Randzone und eines porösen Inneren
\ aus.
\ 609821/03S7For the production of specifically relatively light plastic moldings, two polyurethane components, one of which is "mixed with a blowing agent", are fed via separate feed lines 1 to a mixing chamber 2, intimately mixed in this in countercurrent and then into a mold cavity, not shown The mixture foams in this under the action of the blowing agent and hardens due to the reaction that sets in, forming a massive edge zone that faithfully reproduces the shape of the mold surface and a porous interior.
\ 609821 / 03S7
- 4 KRAUSS-MAFFEI · AKTIENGESELLSCHAFT · 8000 MÜNCHEN 5- 4 KRAUSS-MAFFEI · AKTIENGESELLSCHAFT · 8000 MUNICH 5
20658Λ120658-1
Die Mischkammer 2 ist als ein zylindrischer oder prismatischer Raum mit einer offenen Stirnseite ausgebildet. Diese als Austrittsöffnung 6 für das Gemisch vorgesehene Stirnseite leitet unmittelbar in den Formhohlraum über. Das die Mischkammer umgebende Kammergehäuse 7 greift in den Formhohlraum ein und endet stirnseitig an der Formhohlfläche. Die beiden für die Komponentenzufuhr vorgesehenen Eintrittsöffnungen 25 der Mischkammer 2 liegen diametral einander gegenüber. An die Eintrittsöffnungen 25 sind die Speiseleitungen 1 über je ein in einer Gehäuseöffnung am Kammergehäuse 7 angeflanschtes Zerstäuberorgan 10 angeschlossen. Im Inneren der Mischkammer 2 ist ein längs verschiebbarer äußerer Kolben 11 angeordnet. Dieser wird von einer hydraulischen Kolben-Zylinder-Anordnung 12 betätigt, die an der der Austrittsöffnung 6 gegenüberliegenden Seite mit dem Kammergehäuse 7 verbunden ist. Der äußere Kolben 11 unterbricht beim Beenden der Formfüllung das Zusammentreffen der aus den Eintrittsöffnungen 25 in die Mischkammer 2 eingespritzten Kunststoffkomponenten und sperrt deren Zulauf zur Austrittsöffnung 6.The mixing chamber 2 is designed as a cylindrical or prismatic space with an open end face. This end face, which is provided as an outlet opening 6 for the mixture, leads directly into the mold cavity. The chamber housing 7 surrounding the mixing chamber engages in the mold cavity and ends at the end of the mold cavity surface. The two inlet openings 25 of the mixing chamber 2 provided for the supply of components are diametrically opposed opposite each other. The feed lines 1 are connected to the inlet openings 25 via one each in a housing opening connected to the chamber housing 7 flanged atomizer 10. A longitudinally displaceable outer piston 11 is arranged in the interior of the mixing chamber 2. This one will actuated by a hydraulic piston-cylinder arrangement 12, which is located opposite the outlet opening 6 Side is connected to the chamber housing 7. The outer piston 11 interrupts this when the mold filling is finished Meeting of the from the inlet openings 25 in the Mixing chamber 2 injected plastic components and blocks their inflow to the outlet opening 6.
Die Zerstäuberorgane 10 umfassen Büchsen 20 und 21, Einsätze 22 und 23, Ringspalte 24, Verstellantriebe 26 und Schraubennuten 27 oder 28, sind in Zylindern 29 geführt und werden über ein hydraulisches Druckkissen 30 gegen die Dichtflächen «ies äußeren Kolbens 11The atomizing elements 10 comprise cans 20 and 21, Inserts 22 and 23, annular gaps 24, adjusting drives 26 and screw grooves 27 or 28 are guided in cylinders 29 and are pressed against the sealing surfaces of the outer piston 11 via a hydraulic pressure cushion 30
gepreßt, wobei sie die Gehäuseöffnungen 9 609821/0367pressed, with the housing openings 9 609821/0367
'.■■■■ ■■'■■■■'.- -" 5■"-■■ - -■■ ■■ ■ ■ ■■ ■■' ■ " ■.-■"■''. ■■■■ ■■' ■■■■ '.- - " 5 ■" - ■■ - - ■■ ■■ ■ ■ ■■ ■■' ■ "■ .- ■" ■ '
KRAUSS-MAFFEI · AKTIENGESELLSCHAFT · 8000 MÜNCHEN 5KRAUSS-MAFFEI · AKTIENGESELLSCHAFT · 8000 MUNICH 5
10658411065841
durchsetzen und die aneinander anliegenden Flächen als Planflächen 31 ausgebildet sind.enforce and the adjacent surfaces as Planar surfaces 31 are formed.
Der äußere Kolben 11 weist eine Längsbohrung 33 auf und nimmt einen inneren Kolben 32 auf. Beide Kolben 11 und 32 bilden zusammen das Steuerorgan für die Misch- und für die Nichtmischphase. Die Längsbohrung 33 ist über Querkanäle 34 in der Füllstellung mit den Zerstäuberorganen 10 und in der Unterbrechungsstellung mit Ausblas- ' leitungen 35 verbunden. Zum Betätigen des inneren Kolbens 32 ist eine weitere Kolben-Zylinderanordnung 36 vorgesehen, die konzentrisch zur ersten, zum Betätigen des äußeren Kolbens 11 dienenden Kolben-Zylinderanordnung 12 angeordnet ist.The outer piston 11 has a longitudinal bore 33 and receives an inner piston 32. Both pistons 11 and 32 together form the control element for the mixing and non-mixing phases. The longitudinal bore 33 is over Transverse channels 34 in the filling position with the atomizing elements 10 and in the interruption position with blow-out ' lines 35 connected. To actuate the inner piston 32, a further piston-cylinder arrangement 36 is provided, which are arranged concentrically to the first piston-cylinder arrangement 12 which is used to actuate the outer piston 11 is.
Beim Beenden des Mischvorgangs wird der äußere Kolben betätigt. Dabei treffen die EintrittsöffnungenWhen the mixing process is finished, the outer piston is actuated. The entry openings meet
auf überStrömkanäle 37 zum überleiten der einzelnen i on over flow channels 37 to transfer the individual i
Komponenten in Rückführleitungen 16 und die Querkanäle 34 auf die Ausblasleitungen 35. Dadurch werden die einzelnen Komponenten voneinander getrennt und können im Kreislauf gefördert werden. Eine der Ausblasleitungen 35 ist an einen Drucklufterzeuger angeschlossen, wogegen die andere ins Freie führt. Die in den Querkanälen 34 stehenden geringen Komponenten- oder Gemischreste werden von der zuströmenden Druckluft ins Freie gefördert. Anschließend wird der innere Kolben 32 zur Austrittsöffnung 6 bewegt undComponents in return lines 16 and the cross channels 34 onto the blow-out lines 35. This separates the individual components from one another and allows them to circulate be promoted. One of the blow-out lines 35 is connected to a compressed air generator, while the other leads into the open. The small component or mixture residues standing in the transverse channels 34 are removed from the inflowing Compressed air conveyed to the outside. Then the inner piston 32 is moved to the outlet opening 6 and
60 9 8 21/036760 9 8 21/0367
— 6 —- 6 -
- 6 KRAUSS-MAFFEI · AKTIENGESELLSCHAFT · 800 0 MÜNCHEN- 6 KRAUSS-MAFFEI · AKTIENGESELLSCHAFT · 800 0 MUNICH
schließt dabei zunächst die Querkanäle 34 ab.initially closes the transverse channels 34.
Zum Mischen und Formfüllen laufen die beschriebenen Bewegungsvorgänge in umgekehrter Reihenfolge ab.For mixing and filling the mold, the movements described are carried out in reverse order.
Auf den beim Mischen entstehenden Mischungsdruck kann durch verschieden tiefes Einbringen eines Staukörpers 38 in die Längsbohrung 33 Einfluß genommen werden. Dieser ist als Bolzen ausgebildet, der mittels eines in Fig. 2 dargestellten hydraulischen Stellmotors 39 verschiebbar ist. Fig. 2 zeigt weiterhin bereits bei Fig. 1 erwähnte Teile: das Kammergehäuse 7, die Gehäuseöffnung 9, den äußeren Kolben 11, die Büchsen 20 und 21, den Zylinder 29, die Planfläche 31 und die Längsbohrung 33.The mixing pressure that arises during mixing can be increased by introducing a damming body 38 at different depths can be taken into the longitudinal bore 33 influence. This is designed as a bolt, which is shown by means of a bolt shown in FIG hydraulic servomotor 39 is displaceable. Fig. 2 also shows parts already mentioned in Fig. 1: the chamber housing 7, the housing opening 9, the outer Piston 11, bushings 20 and 21, cylinder 29, flat surface 31 and longitudinal bore 33.
Sha/Z - 7 -Sha / Z - 7 -
609821/0367609821/0367
Claims (2)
Sha/Z60982 1/0367
Sha / Z
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702065841 DE2065841C3 (en) | 1970-02-20 | Device for generating a preferably chemically reactive mixture from at least two plastic components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702065841 DE2065841C3 (en) | 1970-02-20 | Device for generating a preferably chemically reactive mixture from at least two plastic components |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2065841A1 true DE2065841A1 (en) | 1976-05-20 |
| DE2065841B2 DE2065841B2 (en) | 1977-03-31 |
| DE2065841C3 DE2065841C3 (en) | 1977-11-17 |
Family
ID=
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4497579A (en) * | 1981-05-22 | 1985-02-05 | Krauss-Maffei Aktiengesellschaft | Mixing head for reactive materials |
| US4592657A (en) * | 1983-09-02 | 1986-06-03 | Elastogran Maschinenbau Gmbh | Mixing head for producing a preferably chemically reactive mixture of two or more plastics components |
| US4702890A (en) * | 1984-12-21 | 1987-10-27 | Elastogran Maschinenbau Gmbh | Mixing head for mixing two or more plastics components which react to form foam, in particular polyurethane |
| US4707339A (en) * | 1980-10-30 | 1987-11-17 | The Dow Chemical Company | High-pressure mixing head |
| US4773564A (en) * | 1982-03-11 | 1988-09-27 | Elastogran Maschinenbau Gmbh | Mixing head for producing a preferably chemically reactive mixture from two or more plastic components |
| US4805803A (en) * | 1986-08-27 | 1989-02-21 | Klockner Ferromatik Desma Gmbh | Device for preparing and ejecting a chemically reacting mixture |
| US4883645A (en) * | 1986-08-27 | 1989-11-28 | Klockner Ferromatik Desma Gmbh | Device for preparing and ejecting a chemically reacting mixture |
| US4899912A (en) * | 1986-08-27 | 1990-02-13 | Klockner Ferromatik Desma Gmbh | Device for preparing and ejecting a chemically reacting mixture |
| EP0879685A3 (en) * | 1997-05-22 | 1998-12-02 | Afros S.P.A. | Self-cleaning, mixing apparatus and method for the production of polyurethane mixtures |
| WO2006069849A1 (en) * | 2004-12-23 | 2006-07-06 | Krauss-Maffei Kunststofftechnik Gmbh | Mixing head provided with a sealing collar |
| DE202024101948U1 (en) | 2024-04-18 | 2024-05-06 | Kraussmaffei Technologies Gmbh | Device for mixing plastic components with a cleaning device |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4707339A (en) * | 1980-10-30 | 1987-11-17 | The Dow Chemical Company | High-pressure mixing head |
| US4497579A (en) * | 1981-05-22 | 1985-02-05 | Krauss-Maffei Aktiengesellschaft | Mixing head for reactive materials |
| US4773564A (en) * | 1982-03-11 | 1988-09-27 | Elastogran Maschinenbau Gmbh | Mixing head for producing a preferably chemically reactive mixture from two or more plastic components |
| US4592657A (en) * | 1983-09-02 | 1986-06-03 | Elastogran Maschinenbau Gmbh | Mixing head for producing a preferably chemically reactive mixture of two or more plastics components |
| US4702890A (en) * | 1984-12-21 | 1987-10-27 | Elastogran Maschinenbau Gmbh | Mixing head for mixing two or more plastics components which react to form foam, in particular polyurethane |
| US4805803A (en) * | 1986-08-27 | 1989-02-21 | Klockner Ferromatik Desma Gmbh | Device for preparing and ejecting a chemically reacting mixture |
| US4883645A (en) * | 1986-08-27 | 1989-11-28 | Klockner Ferromatik Desma Gmbh | Device for preparing and ejecting a chemically reacting mixture |
| US4899912A (en) * | 1986-08-27 | 1990-02-13 | Klockner Ferromatik Desma Gmbh | Device for preparing and ejecting a chemically reacting mixture |
| EP0879685A3 (en) * | 1997-05-22 | 1998-12-02 | Afros S.P.A. | Self-cleaning, mixing apparatus and method for the production of polyurethane mixtures |
| US6079867A (en) * | 1997-05-22 | 2000-06-27 | Afros S.P.A. | Self-cleaning, mixing apparatus and method for the production of polyurethane formulations |
| WO2006069849A1 (en) * | 2004-12-23 | 2006-07-06 | Krauss-Maffei Kunststofftechnik Gmbh | Mixing head provided with a sealing collar |
| DE202024101948U1 (en) | 2024-04-18 | 2024-05-06 | Kraussmaffei Technologies Gmbh | Device for mixing plastic components with a cleaning device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2065841B2 (en) | 1977-03-31 |
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