EP2730341A1 - Cartridge for at least two flowable components - Google Patents

Cartridge for at least two flowable components Download PDF

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Publication number
EP2730341A1
EP2730341A1 EP13191230.5A EP13191230A EP2730341A1 EP 2730341 A1 EP2730341 A1 EP 2730341A1 EP 13191230 A EP13191230 A EP 13191230A EP 2730341 A1 EP2730341 A1 EP 2730341A1
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EP
European Patent Office
Prior art keywords
wall
storage chamber
filling
cartridge
bead
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
EP13191230.5A
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German (de)
French (fr)
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EP2730341B1 (en
Inventor
Ralf Seifer
Manfred Obrist
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Medmix Switzerland AG
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Sulzer Mixpac AG
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Publication date
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Priority to EP13191230.5A priority Critical patent/EP2730341B1/en
Publication of EP2730341A1 publication Critical patent/EP2730341A1/en
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Publication of EP2730341B1 publication Critical patent/EP2730341B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/02—Internal fittings
    • B65D25/04—Partitions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture

Abstract

The cartridge (10) has a first storage chamber (11) comprising a first inner wall (13) and a first filling opening (12). A second storage chamber (21) comprises a second inner wall (23) and a second filling opening (22), where the inner walls comprise peripheral bead (18, 28) in a region of the filling openings. First and second cylindrical pistons (17, 27) are held captively after insertion into the chambers by the bead. The inner walls respectively comprise first and second connection sections. A connection web is arranged between the connection sections.

Description

Die Erfindung betrifft eine Kartusche für mindestens zwei fliessfähige Komponenten gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a cartridge for at least two flowable components according to the preamble of claim 1.

Von der Anmelderin werden bereits seit einiger Zeit Kartuschen für mindestens zwei fliessfähige Komponenten mit einem Füllende und einem Austrittsende vertrieben, wobei am Austrittsende ein Komponentenauslass angeordnet ist. Diese Kartuschen verfügen über eine erste Vorratskammer für eine erste Komponente mit einer sich zwischen dem Füllende und dem Austrittsende erstreckenden ersten Innenwand und einer am Füllende angeordneten ersten Füllöffnung, sowie über eine zweite Vorratskammer für eine zweite Komponente mit einer sich zwischen dem Füllende und dem Austrittsende erstreckenden zweiten Innenwand und einer am Füllende angeordneten zweiten Füllöffnung. Die erste und die zweite Vorratskammer sind mittels eines Verbindungsstegs miteinander verbunden. Die erste Füllöffnung und die erste Innenwand sind so ausgeführt, dass ein erster Kolben so in die erste Vorratskammer eingesetzt werden kann, dass er die erste Vorratskammer dichtend abschliesst. Die zweite Füllöffnung und die zweite Innenwand sind so ausgeführt, dass ein zweiter Kolben so in die zweite Vorratskammer eingesetzt werden kann, dass er die zweite Vorratskammer dichtend abschliesst. Die erste und zweite Innenwand weisen im Bereich der ersten und zweiten Füllöffnung jeweils einen vollständig umlaufenden Wulst auf, mittels welchen der erste und zweite Kolben nach dem Einsetzen in die erste und zweite Vorratskammer verliersicher haltbar sind. Die Wulste verhindern also, dass die Kolben nach dem Einsetzen über die Füllöffnungen aus den Vorratskammern herausrutschen können.Cartridges for at least two flowable components with a filling end and an outlet end have already been marketed by the applicant for some time, wherein a component outlet is arranged at the outlet end. These cartridges have a first supply chamber for a first component having a first inner wall extending between the filling end and the discharge end and a first filling opening arranged at the filling end, and a second storage chamber for a second component having a filling element between the filling end and the discharge end second inner wall and a second filling opening arranged at the filling end. The first and the second storage chamber are connected to each other by means of a connecting web. The first filling opening and the first inner wall are designed such that a first piston can be inserted into the first storage chamber in such a way that it seals off the first storage chamber. The second filling opening and the second inner wall are designed so that a second piston can be inserted into the second storage chamber so that it seals the second storage chamber. The first and second inner wall have in the region of the first and second filling opening in each case a completely encircling bead, by means of which the first and second pistons are captively preserved after insertion into the first and second storage chamber. The beads thus prevent the pistons from slipping out of the storage chambers via the filling openings after insertion.

Diese Kartuschen werden mittels eines Spritzgussverfahrens hergestellt, wobei ein für die Ausbildung der Vorratskammern und der Wulste notwendiger Kern nach dem Öffnen des Spritzwerkzeugs ohne Einsatz von Schiebern oder Auswerferstiften durch die Füllöffnungen herausgezogen bzw. die Kartusche von dem Kern abgezogen wird. Es findet also eine so genannte Zwangsentformung statt, womit eine kostengünstige Herstellung der Kartuschen möglich ist. Bei der Zwangsentformung der Kartuschen nach dem Stand der Technik kann es zu bleibenden Verformungen der Wulste kommen, wobei sich Grate bilden können, die beim Einsetzen der Kolben in die Vorratskammern zu Beschädigungen der Kolben führen können. Derart beschädigte Kolben können die Vorratskammern nicht mehr sicher verschliessen, so dass zum einen die Komponenten an den Kolben vorbei über die Füllöffnungen austreten können und zum anderen die Komponenten mit Luft in Berührung kommen können, was zum Austrocknen oder zu unerwünschten chemischen Veränderungen der Komponenten führen kann.These cartridges are manufactured by means of an injection molding process, wherein a necessary for the formation of the storage chambers and the bead core after opening the injection mold without the use of slides or ejector pins pulled out through the filling openings or the cartridge is withdrawn from the core. So there is a so-called compulsory removal instead, whereby a cost-effective production of the cartridges is possible. In the case of the compulsory removal of the prior art cartridges, permanent deformation of the beads can occur, whereby burrs can form, which can lead to damage of the pistons when the pistons are inserted into the reservoir chambers. Such damaged pistons can no longer reliably close the storage chambers so that, on the one hand, the components can escape past the pistons via the filling openings and, on the other hand, the components can come into contact with air, which can lead to dehydration or undesirable chemical changes in the components ,

Demgegenüber ist es die Aufgabe der Erfindung, eine Kartusche für mindestens zwei fliessfähige Komponenten vorzuschlagen, welche kostengünstig herstellbar ist und trotzdem eine sichere Abdichtung der Vorratskammern ermöglicht. Erfindungsgemäß wird diese Aufgabe mit einer Austragvorrichtung mit den Merkmalen des Anspruchs 1 gelöst.In contrast, it is the object of the invention to provide a cartridge for at least two flowable components, which is inexpensive to produce and still allows a secure seal of the pantries. According to the invention this object is achieved with a discharge device having the features of claim 1.

Erfindungsgemäss verfügt die erste Innenwand über einen ersten Verbindungsabschnitt und die zweite Innenwand über einen zweiten Verbindungsabschnitt, in dem sie keinen Wulst aufweisen, wobei der Verbindungssteg zwischen dem ersten und dem zweiten Abschnitt angeordnet ist. Die Wulste sind also nicht in Umfangsrichtung vollständig umlaufend ausgeführt. Der genannte Verbindungsabschnitt ohne Wulst einer Innenwand ist damit bezüglich einer Austragrichtung an derselben Position wie der Wulst der Innenwand angeordnet. Die genannten Verbindungsabschnitte sind also ebenfalls im Bereich der Füllöffnungen angeordnet.According to the invention, the first inner wall has a first connecting portion and the second inner wall has a second connecting portion, in which they have no bead, wherein the connecting web between the first and the second portion is arranged. The beads are therefore not designed to be completely circumferential in the circumferential direction. Said connecting portion without bead of an inner wall is thus arranged with respect to a discharge at the same position as the bead of the inner wall. The said connection sections are thus also arranged in the region of the filling openings.

Der Erfindung liegt die Erkenntnis zu Grunde, dass es bei der oben beschriebenen Zwangsentformung notwendig ist, dass die Kartusche bzw. die Vorratskammern beim Herausziehen des Kerns insbesondere im Bereich der Wulste leicht elastisch aufgeweitet werden müssen. Dies ist an sich auch problemlos möglich, da die Kartusche nach dem Spritzgiessen eine ausreichende Elastizität aufweist. Im Bereich des Verbindungsstegs, über den die Vorratskammern verbunden sind, kann diese Aufweitung unter Umständen aber nicht ausreichend stattfinden, da sich die Vorratskammern in entgegengesetzte Richtungen aufweiten müssten, was aber bedingt durch eine nur sehr geringe Dicke des Verbindungsstegs nur sehr bedingt möglich ist. Bei vollständig umlaufenden Wulsten kann es deshalb bei der Zwangsentformung insbesondere im Bereich des Verbindungsstegs zur Bildung von Graten kommen, die die Kolben beim Einsetzen beschädigen können. Durch das erfindungsgemässe Vorsehen der beschriebenen Verbindungsabschnitte ohne Wulst kann einerseits die Entstehung dieser Grate wirkungsvoll verhindert werden und dennoch können die teilweise umlaufenden Wulste ihre Funktion der Kolbensicherung weiterhin erfüllen. Durch die erfindungsgemässe Ausgestaltung der Kartusche kann diese weiterhin mittels eines Spritzgussverfahrens mit Zwangsentformung hergestellt werden, womit eine kostengünstige Herstellung der Kartusche ermöglicht wird.The invention is based on the finding that it is necessary in the above-described forced removal that the cartridge or the storage chambers must be slightly elastically expanded when pulling out the core, in particular in the region of the beads. This is also true problem-free, since the cartridge has sufficient elasticity after injection molding. In the region of the connecting web over which the storage chambers are connected, this expansion may not take place sufficiently, however, since the storage chambers would have to expand in opposite directions, but this is only possible to a very limited extent due to a very small thickness of the connecting web. In the case of completely circumferential beads, it is therefore possible during the forced removal, in particular in the region of the connecting web, to form burrs which can damage the pistons during insertion. By providing the invention described connecting sections without bead on the one hand, the formation of these burrs can be effectively prevented, yet the partially encircling beads can continue to fulfill their function of the piston backup. By virtue of the embodiment of the cartridge according to the invention, the latter can furthermore be produced by means of an injection molding process with forced removal, thus enabling a cost-effective production of the cartridge.

Unter einem Wulst soll eine Erhebung der Innenwände der Vorratskammern nach innen verstanden werden, die zusammenhängend in Umfangsrichtung der Innenwand verläuft. Der Wulst verläuft insbesondere parallel zur Füllöffnung und damit senkrecht zu einer Austragrichtung, welche zwischen Füllende und Austrittsende orientiert ist und parallel zu der die Kolben beim Austragen der Komponenten verschoben werden. Die Wulste weisen insbesondere eine in Austragrichtung orientiere Breite zwischen 0.2 und 0.5 mm und eine nach innen orientierte Höhe zwischen 0.2 und 0.5 mm auf. Die Wulste verfügen insbesondere nur über abgerundete oder so genannte weiche Übergänge und damit nicht über scharfe Ecken oder Kanten. Damit wird zum einen die Zwangsentformung und zum anderen das Einsetzen der Kolben erleichtert.Under a bead to a survey of the inner walls of the storage chambers to be understood inwardly, which runs continuously in the circumferential direction of the inner wall. The bead runs in particular parallel to the filling opening and thus perpendicular to a discharge direction, which is oriented between the filling end and the outlet end and parallel to the piston are displaced during the discharge of the components. The beads have, in particular, a width oriented in the discharge direction between 0.2 and 0.5 mm and an inwardly oriented height between 0.2 and 0.5 mm. In particular, the beads have only rounded or so-called soft transitions and therefore no sharp corners or edges. Thus, on the one hand, the forced demolition and on the other the insertion of the piston is facilitated.

Unter dem Merkmal, dass die Kolben verliersicher in den Vorratskammern haltbar sind, soll verstanden werden, dass die Kolben nach dem Einsetzen und damit nach dem Überwinden der Wulste nur nach Überwinden einer Widerstandskraft wieder aus der Vorratskammer herausgeschoben werden können. Die Höhe der Widerstandskraft ist insbesondere von der Beschaffenheit des Wulstes, aber auch von der Beschaffenheit des Kolbens abhängig. Ist der Kolben an seinem Umfang sehr steif, so ist die Widerstandskraft höher als bei einem weichen Kolben. Die Kartusche und die zugehörigen Kolben sind insbesondere so ausgeführt, dass die Widerstandskraft ausreicht, dass der Kolben bei einem Druck von ca. 1 bis 2 bar innerhalb der Vorratskammer nicht über den Wulst geschoben wird.Under the feature that the pistons are captively stored in the storage chambers, it should be understood that the piston after insertion and thus after overcoming the beads can only be pushed out of the pantry after overcoming a resistance force. The height of the resistance is in particular of the Texture of the bead, but also dependent on the nature of the piston. If the piston is very stiff on its circumference, the resistance force is higher than that of a soft piston. The cartridge and the associated pistons are in particular designed so that the resistance is sufficient that the piston is not pushed over the bead at a pressure of about 1 to 2 bar inside the storage chamber.

Die Vorratskammern weisen insbesondere einen runden Querschnitt und damit eine hauptsächlich hohlzylinderförmige Grundform auf. Es ist aber beispielsweise auch möglich, dass sie einen quadratischen oder rechteckigen Querschnitt aufweisen. Die Kartusche kann auch mehr als zwei Vorratskammern, also beispielsweise drei oder vier Vorratskammern aufweisen. Jede Vorratskammer weist insbesondere einen separaten Komponentenauslass auf, so dass die Kartusche mindestens zwei Komponentenauslässe aufweist. Auf die Kartusche kann beispielsweise ein Mischer, insbesondere ein statischer Mischer aufgesteckt werden, welcher die Komponenten nach dem Austragen aus den Komponentenauslässen mischt.The storage chambers have in particular a round cross section and thus a mainly hollow cylindrical basic shape. But it is also possible, for example, that they have a square or rectangular cross-section. The cartridge may also have more than two storage chambers, so for example three or four storage chambers. In particular, each storage chamber has a separate component outlet, so that the cartridge has at least two component outlets. For example, a mixer, in particular a static mixer, which mixes the components after discharge from the component outlets, can be plugged onto the cartridge.

Die Kartuschen können insbesondere aus Polyamid oder Polybutylenterephthalat bestehen, aber auch beispielsweise aus Polypropylen oder Polyethylen. Die Kartuschen können beispielsweise für eine Füllmenge der Komponenten bis ungefähr 400 ml, insbesondere bis 200 ml ausgelegt sein, wobei die beiden Vorratskammern gleich gross oder unterschiedlich gross sein können. Die Vorratskammern weisen dann beispielsweise eine Wandstärke von ca. 1.0 bis 2.5 mm auf. Die erfindungsgemässe Ausgestaltung der Wulste ist insbesondere bei kleinen Kartuschen mit einer Füllmenge bis ca. 200 ml aus wenig flexiblen Material wie beispielsweise Polyamid vorteilhaft, da insbesondere bei dieser Konstellation Grate beim Zwangsentformen entstehen können.The cartridges may consist in particular of polyamide or polybutylene terephthalate, but also for example of polypropylene or polyethylene. The cartridges can be designed, for example, for a filling amount of the components up to about 400 ml, in particular up to 200 ml, wherein the two pantries can be the same size or different sizes. The pantries then have, for example, a wall thickness of about 1.0 to 2.5 mm. The inventive design of the beads is particularly advantageous for small cartridges with a capacity of about 200 ml of less flexible material such as polyamide, since in this constellation burrs may arise during compulsory removal.

In Ausgestaltung der Erfindung umfasst der erste und/oder zweite Verbindungsabschnitt 10 - 40 %, bevorzugt 20 - 30 %, besonders bevorzugt 25 % eines Umfangs der ersten bzw. zweiten Innenwand. Der erste und zweite Verbindungsabschnitt können dabei gleich gross oder auch unterschiedlich sein. Der prozentuale Anteil der Verbindungsabschnitte am gesamten Umfang ist insbesondere bei Vorratskammern mit kleinen Durchmessern grösser als bei Vorratskammern mit grösseren Durchmessern. Die genannte Wahl der Grösse des Verbindungsabschnitts bietet einen guten Kompromiss zwischen der Herstellbarkeit der Kartusche ohne Grate und der von den Wulsten aufbringbaren Widerstandskraft.In an embodiment of the invention, the first and / or second connecting portion 10 - 40%, preferably 20 - 30%, more preferably 25% of a circumference of the first and second inner wall. The first and second connecting portion can be the same size or different. The percentage of the connecting sections on the entire circumference is greater, especially in the case of storage chambers with small diameters, than in the case of storage chambers with larger diameters. Said choice of the size of the connecting portion offers a good compromise between the manufacturability of the cartridge without burrs and the resistance force that can be applied by the beads.

In Ausgestaltung der Erfindung weist die erste und zweite Innenwand eine jeweils eine runden Querschnitt mit einem ersten und zweiten Mittelpunkt auf. Die Vorratskammern weisen damit eine hauptsächlich hohlzylinderförmige Grundform auf. Der erste und zweite Verbindungsabschnitt sind in einer Draufsicht in Austragrichtung gesehen symmetrisch zu einer Verbindungslinie zwischen dem ersten und zweiten Mittelpunkt angeordnet. Damit kann erreicht werden, dass die Verbindungsabschnitte möglichst klein gehalten und damit die genannte Widerstandskraft möglichst gross ist.In an embodiment of the invention, the first and second inner wall each have a round cross section with a first and second center. The storage chambers thus have a mainly hollow cylindrical basic shape. The first and second connecting portions are arranged in a plan view in discharge as seen symmetrically to a connecting line between the first and second center. This can be achieved that the connecting portions kept as small as possible and thus the said resistance is as large as possible.

Die erfindungsgemässe Kartusche kann beispielsweise für medizinische Anwendungen, insbesondere im Dentalbereich eingesetzt werden. Anwendungen sind aber auch in vielen anderen Bereichen möglich, in denen zwei oder mehr Komponenten erst unmittelbar vor der Verwendung gemischt werden müssen.The cartridge according to the invention can be used, for example, for medical applications, in particular in the dental field. However, applications are also possible in many other areas where two or more components need to be mixed just prior to use.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich anhand der nachfolgenden Beschreibung von Ausführungsbeispielen sowie anhand der Zeichnungen, in welchen gleiche oder funktionsgleiche Elemente mit identischen Bezugszeichen versehen sind.Further advantages, features and details of the invention will become apparent from the following description of exemplary embodiments and with reference to the drawings, in which the same or functionally identical elements are provided with identical reference numerals.

Dabei zeigen:

Fig. 1
eine schematische Darstellung einer Kartusche in einem Querschnitt,
Fig. 2
die Kartusche aus Fig. 1 in einer Draufsicht auf ihr Füllende,
Fig. 3
einen Ausschnitt einer Kartusche mit vollständig aufgenommenen Kern und
Fig. 4
die Kartusche aus Fig. 3 mit teilweise herausgezogenem Kern.
Showing:
Fig. 1
a schematic representation of a cartridge in a cross section,
Fig. 2
the cartridge off Fig. 1 in a plan view of her filling,
Fig. 3
a section of a cartridge with fully absorbed core and
Fig. 4
the cartridge off Fig. 3 with partially pulled out core.

Gemäss Fig. 1 weist eine Kartusche 10 eine erste Vorratskammer 11 mit einer hauptsächlich hohlzylindrischen Grundform auf. An einem Füllende 14 der Kartusche 10 weist die erste Vorratskammer 11 eine erste Füllöffnung 12 auf, über die eine erste Komponente in die erste Vorratskammer 11 eingefüllt werden kann. Vom Füllende 14 der Kartusche 10 verläuft eine erste Innenwand 13 der ersten Vorratskammer 11 bis zu einem Austrittsende 15 der Kartusche 10. Am Austrittsende 15 weist die erste Vorratskammer 11 einen ersten Komponentenauslass 16 auf, über den die erste Komponente aus der ersten Vorratskammer 11 ausgetragen werden kann.According to Fig. 1 For example, a cartridge 10 has a first storage chamber 11 with a mainly hollow-cylindrical basic shape. At a filling end 14 of the cartridge 10, the first storage chamber 11 has a first filling opening 12, via which a first component can be filled into the first storage chamber 11. From the filling end 14 of the cartridge 10, a first inner wall 13 of the first storage chamber 11 extends to an outlet end 15 of the cartridge 10. At the outlet end 15, the first storage chamber 11 has a first component outlet 16, via which the first component from the first storage chamber 11 are discharged can.

Über die erste Füllöffnung 12 kann ein erster, hauptsächlich zylindrischer Kolben 17 in die erste Vorratskammer 11 eingesetzt werden. Der erste Kolben 17 ist so ausgeführt, dass er nach dem Einsetzen die erste Vorratskammer 11 in Richtung erster Füllöffnung 12 dicht verschliesst. Der erste Kolben 17 ist sehr schematisch dargestellt. Er kann insbesondere am Umfang umlaufende, weiche Dichtlippen aufweisen. Durch Verschieben des ersten Kolbens 17 in Richtung erstem Komponentenauslass 16 und damit in Richtung einer Austragrichtung 9 kann die erste Komponente aus dem ersten Vorratsbehälter 11 ausgeschoben werden. Der erste Kolben 17 kann mittels eines nicht dargestellten Austraggeräts in Richtung erstem Komponentenauslass 16 verschoben werden.Via the first filling opening 12, a first, mainly cylindrical piston 17 can be inserted into the first storage chamber 11. The first piston 17 is designed so that it closes tightly after insertion, the first storage chamber 11 in the direction of the first filling opening 12. The first piston 17 is shown very schematically. In particular, it can have peripheral, soft sealing lips on the circumference. By moving the first piston 17 in the direction of the first component outlet 16 and thus in the direction of a discharge 9, the first component can be pushed out of the first storage container 11. The first piston 17 can be moved in the direction of the first component outlet 16 by means of a dispensing device, not shown.

Parallel zur ersten Vorratskammer 11 ist eine identisch ausgeführte zweite Vorratskammer 21, mit einer zweiten Füllöffnung 22, einer zweiten Innenwand 23 und einem zweiten Komponentenauslass 26 angeordnet. In die zweite Vorratskammer 21 kann analog zum ersten Kolben 17 ein zweiter Kolben 27 eingesetzt werden. Die beiden Vorratskammern 11 und 21 sind mittels eines Verbindungsstegs 30 miteinander verbunden.Parallel to the first storage chamber 11, an identically designed second storage chamber 21, with a second filling opening 22, a second inner wall 23 and a second component outlet 26 is arranged. In the second storage chamber 21, a second piston 27 can be used analogously to the first piston 17. The two storage chambers 11 and 21 are connected to each other by means of a connecting web 30.

Im Bereich der ersten bzw. zweiten Füllöffnung 12, 22 weisen die Innenwände 13, 23 jeweils einen teilweise umlaufenden Wulst 18, 28 auf. Die Wulste 18, 28 dienen dazu, sicher zu stellen, dass die Kolben 17, 27 nach dem Einsetzen in die Vorratskammern 11, 21 nicht wieder über die Füllöffnungen 12, 22 herausrutschen. Da die Wulste 18, 28 wie in Fig. 2 zu sehen, nicht vollständig umlaufen, sind sie in der Schnittdarstellung in Fig. 1 nur jeweils an der dem Verbindungssteg 30 entgegen liegenden Seite der Innenwände 13, 23 zu sehen. Die Wulste 18, 28 sind ebenfalls nur sehr schematisch und ausserdem etwas überzeichnet dargestellt. Die Wulste 18, 28 weisen eine in Austragrichtung 9 orientiere Breite zwischen 0.2 und 0.5 mm und eine nach innen, also in Richtung Verbindungssteg 30 orientierte Höhe zwischen 0.2 und 0.5 mm auf.In the region of the first or second filling opening 12, 22, the inner walls 13, 23 each have a partially encircling bead 18, 28. The beads 18, 28 serve to ensure that the pistons 17, 27 do not slip over the filling openings 12, 22 again after insertion into the storage chambers 11, 21. Since the beads 18, 28 as in Fig. 2 to see, do not completely orbit, they are in the sectional view in Fig. 1 only in each case on the connecting web 30 opposite side of the inner walls 13, 23 to see. The beads 18, 28 are also shown only very schematically and also somewhat overdrawn. The beads 18, 28 have an orientation in the discharge direction 9 width between 0.2 and 0.5 mm and an inward, so oriented in the direction of connecting web 30 height between 0.2 and 0.5 mm.

Zur sicheren Verbindung mit dem nicht dargestellten Austraggerät weist die Kartusche 10 am Füllende 14 einen Anschlussflansch 31 auf. Am Austrittsende 15 ist um die Komponentenauslässe 16 und 26 ein Teil 37 eines Bajonettverschlusses angeordnet, über den ein nicht dargestellter statischer Mischer mit der Kartusche 10 verbunden werden kann. Damit werden die aus den Komponentenauslässen 16 uns 26 ausgetragenen Komponenten dem Mischer zugeführt und von diesem vermischt.For safe connection with the discharge device, not shown, the cartridge 10 at the filling end 14 on a connecting flange 31. At the outlet end 15, a portion 37 of a bayonet closure is arranged around the component outlets 16 and 26, via which a static mixer, not shown, can be connected to the cartridge 10. Thus, the components discharged from the component outlets 16 and 26 are supplied to the mixer and mixed by the mixer.

Wie in Fig. 2 zu sehen, in der eine Draufsicht auf das Füllende 14 der Kartusche 10 dargestellt ist, sind die Wulste 18, 28 der ersten und zweiten Vorratskammern 11, 21 nicht vollständig umlaufend ausgeführt.As in Fig. 2 can be seen, in which a plan view of the filling end 14 of the cartridge 10 is shown, the beads 18, 28 of the first and second storage chambers 11, 21 are not carried out completely circulating.

Die erste Innenwand 13 verfügt über einen ersten Verbindungsabschnitt 19, der keinen Wulst aufweist. Analog dazu verfügt die zweite Innenwand 23 über einen zweiten Verbindungsabschnitt 29, der ebenfalls keinen Wulst aufweist. Zwischen den beiden Verbindungsabschnitten 19, 29 ist der Verbindungssteg 30 angeordnet.The first inner wall 13 has a first connecting portion 19 which has no bead. Similarly, the second inner wall 23 has a second connecting portion 29, which also has no bead. Between the two connecting portions 19, 29 of the connecting web 30 is arranged.

Der erste Verbindungsabschnitt 19 erstreckt sich über einen Winkelbereich α von 90 °, also über 25% des gesamten Umfangs der ersten Innenwand 13. Der erste Verbindungsabschnitt 19 ist dabei symmetrisch zu einer Verbindungslinie 34 angeordnet, die einen ersten Mittelpunkt 32 der ersten Innenwand 13 und einen zweiten Mittelpunkt 33 der zweiten Innenwand 23 miteinander verbindet.The first connecting portion 19 extends over an angular range α of 90 °, ie over 25% of the entire circumference of the first inner wall 13. The first connecting portion 19 is arranged symmetrically to a connecting line 34, which has a first center 32 of the first Inner wall 13 and a second center 33 of the second inner wall 23 connects to each other.

Der zweite Verbindungsabschnitt 29 ist analog zum ersten Verbindungsabschnitt 19 ausgeführt. Er erstreckt sich über einen Winkelbereich β ebenfalls von 90 °, also über 25% des gesamten Umfangs der zweiten Innenwand 23. Der zweite Verbindungsabschnitt 29 ist dabei ebenfalls symmetrisch zur Verbindungslinie 34 angeordnet.The second connection section 29 is designed analogously to the first connection section 19. It also extends over an angular range β of 90 °, ie over 25% of the entire circumference of the second inner wall 23. The second connecting portion 29 is likewise arranged symmetrically to the connecting line 34.

Die Wulste 18 und 28 sind in der Fig. 2 ebenfalls sehr schematisch dargestellt. Die Wulste 18 und 28 weisen auch insbesondere an ihren zu den Verbindungsabschnitten 19 und 29 orientierten Ende keine scharfen Ecken und Kanten auf.The beads 18 and 28 are in the Fig. 2 also shown very schematically. The beads 18 and 28 also have no sharp corners and edges, in particular at their end oriented to the connecting sections 19 and 29.

Der Umfang der ersten Innenwand 13 setzt sich zusammen aus dem ersten Verbindungsabschnitt 19 und einem ersten Wulstabschnitt 35, der den ersten Wulst 18 aufweist. Analog dazu setzt sich der Umfang der zweiten Innenwand 23 aus dem zweiten Verbindungsabschnitt 29 und einem zweiten Wulstabschnitt 36 zusammen, der den zweiten Wulst 28 aufweist.The circumference of the first inner wall 13 is composed of the first connecting portion 19 and a first bead portion 35 having the first bead 18. Similarly, the periphery of the second inner wall 23 is composed of the second connecting portion 29 and a second bead portion 36 having the second bead 28.

In den dargestellten Ausführungsformen der erfindungsgemässen Kartusche weisen die Wulste abgesehen von den Verbindungsbereichen keine Unterberechungen auf. Es ist aber durchaus möglich, dass weitere, kleine Unterbrechungen vorgesehen sind.In the illustrated embodiments of the cartridge according to the invention, the beads, apart from the connecting regions, have no undercuts. But it is quite possible that further, small interruptions are provided.

Die Kartusche 10 wird mittels eines Spritzgussverfahrens hergestellt. Zur Ausbildung der Vorratskammern 11, 21 und auch der Wulste 18, 28 sind so genannte Kerne notwendig. Nach dem eigentlichen Spritzgiessen, bei der die Kartusche 10 entsteht, wird ein für die Bildung der Aussenkontur notwendiges Spritzwerkzeug geöffnet und anschliessend werden die Kerne entfernt. Bei der Herstellung der erfindungsgemässen Kartuschen 10 werden keine Schieber oder Auswerfstifte beim Entfernen der Kerne verwendet, sondern die Kerne werden mittels einer so genannten Zwangsentformung aus den Vorratsbehältern entfernt.The cartridge 10 is manufactured by means of an injection molding process. To form the storage chambers 11, 21 and also the beads 18, 28 so-called cores are necessary. After the actual injection molding, in which the cartridge 10 is formed, a necessary for the formation of the outer contour injection mold is opened and then the cores are removed. In the production of the cartridges 10 according to the invention, no slides or ejection pins are used when the cores are removed, but instead The cores are removed by means of a so-called compulsory removal from the storage containers.

In Fig. 3 ist ein Ausschnitt einer Kartusche 10 mit einem zweiteiligen Kern 40 vor dem Beginn der Zwangsentformung dargestellt. Die Fig. 4 zeigt dieselbe Anordnung mit teilweise entferntem Kern 40, wobei der Kern 40 entgegen der Austragrichtung 9 abgezogen wird.In Fig. 3 a section of a cartridge 10 is shown with a two-part core 40 before the beginning of compulsory removal. The Fig. 4 shows the same arrangement with partially removed core 40, wherein the core 40 is withdrawn against the discharge 9.

Der Kern 40 weist einen ersten Teil-Kern 41 zur Ausbildung der ersten Vorratskammer 11 und einen zweiten Teil-Kern 42 zur Bildung der zweiten Vorratskammer 21 auf. Die erste Teil-Kern 41 verfügt über eine nur in Fig. 4 zu sehende, erste Nut 43 zur Bildung des ersten Wulstes 18 der ersten Vorratskammer 11. Analog dazu verfügt der zweite Teil-Kern 42 über eine nur in Fig. 4 zu sehende, zweite Nut 44 zur Bildung des zweiten Wulstes 28 der zweiten Vorratskammer 21.The core 40 has a first part core 41 for forming the first storage chamber 11 and a second part core 42 for forming the second storage chamber 21. The first part-core 41 has an only in Fig. 4 to see first groove 43 to form the first bead 18 of the first pantry 11. Similarly, the second part-core 42 has a only in Fig. 4 to see, second groove 44 for forming the second bead 28 of the second storage chamber 21st

Beim Abziehen des Kerns 40 weiten sich die Vorratskammern 11, 21 leicht auf, was in der Fig. 4 allerdings nicht dargestellt ist.When removing the core 40, the storage chambers 11, 21 widen slightly, resulting in the Fig. 4 but not shown.

Claims (5)

Kartusche für mindestens zwei fliessfähige Komponenten mit - einem Füllende (14) und einem Austrittsende (15), - einer ersten Vorratskammer (11) für eine erste Komponente mit einer sich zwischen dem Füllende (14) und dem Austrittsende (15) erstreckenden ersten Innenwand (13) und einer am Füllende (14) angeordneten ersten Füllöffnung (12), - einer zweiten Vorratskammer (21) für eine zweite Komponente mit einer sich zwischen dem Füllende (14) und dem Austrittsende (15) erstreckenden zweiten Innenwand (23) und einer am Füllende (14) angeordneten zweiten Füllöffnung (22) und - einem am Austrittsende (15) angeordneten Komponentenauslass (16, 26),
wobei - die erste und die zweite Vorratskammer (11, 21) mittels eines Verbindungsstegs (30) miteinander verbunden sind, - die erste Füllöffnung (12) und die erste Innenwand (13) so ausgeführt sind, dass ein erster Kolben (17) so in die erste Vorratskammer (11) eingesetzt werden kann, dass er die erste Vorratskammer (11) dichtend abschliesst, - die zweite Füllöffnung (22) und die zweite Innenwand (23) so ausgeführt sind, dass ein zweiter Kolben (27) so in die zweite Vorratskammer (21) eingesetzt werden kann, dass er die zweite Vorratskammer (21) dichtend abschliesst und - die erste und zweite Innenwand (13, 23) im Bereich der ersten und zweiten Füllöffnung (12, 22) jeweils einen umlaufenden Wulst (18, 28) aufweisen, mittels welchen der erste und zweite Kolben (17, 27) nach dem Einsetzen in die erste und zweite Vorratskammer (11, 21) verliersicher haltbar sind,
dadurch gekennzeichnet, dass - die erste Innenwand (13) über einen ersten Verbindungsabschnitt (19) und die zweite Innenwand (23) über einen zweiten Verbindungsabschnitt (29) verfügen, in dem sie keinen Wulst (18, 28) aufweisen und - der Verbindungssteg (30) zwischen dem ersten und dem zweiten Abschnitt (19, 29) angeordnet ist. Cartridge for at least two flowable components with a filling end (14) and an outlet end (15), - A first storage chamber (11) for a first component with a between the filling end (14) and the outlet end (15) extending first inner wall (13) and a filling at the end (14) arranged first filling opening (12), - A second storage chamber (21) for a second component with a between the filling end (14) and the outlet end (15) extending second inner wall (23) and at the filling end (14) arranged second filling opening (22) and a component outlet (16, 26) arranged at the outlet end (15),
in which - The first and the second storage chamber (11, 21) by means of a connecting web (30) are interconnected, - The first filling opening (12) and the first inner wall (13) are designed so that a first piston (17) can be inserted into the first storage chamber (11) in such a way that it seals the first storage chamber (11), - The second filling opening (22) and the second inner wall (23) are designed so that a second piston (27) in the second storage chamber (21) can be used, that it closes the second storage chamber (21) sealing and - The first and second inner wall (13, 23) in the region of the first and second filling opening (12, 22) each having a circumferential bead (18, 28), by means of which the first and second pistons (17, 27) after insertion in the first and second storage chambers (11, 21) are captive,
characterized in that - The first inner wall (13) via a first connecting portion (19) and the second inner wall (23) via a second connecting portion (29) have, in which they have no bead (18, 28) and - The connecting web (30) between the first and the second portion (19, 29) is arranged. Kartusche nach Anspruch 1,
dadurch gekennzeichnet, dass
der erste und/oder zweite Verbindungsabschnitt (19, 29) 10 - 40 %, bevorzugt 20 - 30 %, besonders bevorzugt 25 % eines Umfangs der ersten bzw. zweiten Innenwand (13, 23) umfasst.Cartridge according to claim 1,
characterized in that
the first and / or second connecting portion (19, 29) comprises 10 - 40%, preferably 20 - 30%, particularly preferably 25% of a circumference of the first and second inner wall (13, 23). Kartusche nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass
die erste und zweite Innenwand (13, 23) eine jeweils eine runden Querschnitt mit einem ersten und zweiten Mittelpunkt (32, 33) aufweist und der erste und zweite Verbindungsabschnitt (19, 29) symmetrisch zu einer Verbindungslinie (34) zwischen dem ersten und zweiten Mittelpunkt (32, 33) angeordnet sind.Cartridge according to claim 1 or 2,
characterized in that
the first and second inner walls (13, 23) each have a circular cross section with first and second midpoints (32, 33) and the first and second connecting portions (19, 29) symmetrical to a connecting line (34) between the first and second Center (32, 33) are arranged. Kartusche nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet, dass
die Wulste (18, 28) eine Höhe zwischen 0.2 und 0.5 mm aufweisen.A cartridge according to claim 1, 2 or 3,
characterized in that
the beads (18, 28) have a height between 0.2 and 0.5 mm. Kartusche nach Anspruch 4,
dadurch gekennzeichnet, dass
die Wulste (18, 28) eine Breite zwischen 0.2 und 0.5 mm aufweisen.Cartridge according to claim 4,
characterized in that
the beads (18, 28) have a width between 0.2 and 0.5 mm.
EP13191230.5A 2012-11-08 2013-11-01 Cartridge for at least two flowable components Active EP2730341B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13191230.5A EP2730341B1 (en) 2012-11-08 2013-11-01 Cartridge for at least two flowable components

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12191712 2012-11-08
EP13191230.5A EP2730341B1 (en) 2012-11-08 2013-11-01 Cartridge for at least two flowable components

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EP2730341A1 true EP2730341A1 (en) 2014-05-14
EP2730341B1 EP2730341B1 (en) 2018-07-11

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EP (1) EP2730341B1 (en)
JP (1) JP6275448B2 (en)
KR (1) KR102023143B1 (en)
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CN103803179B (en) 2017-10-13
BR102013026221A2 (en) 2014-09-30
US20170158413A1 (en) 2017-06-08
BR102013026221B8 (en) 2023-03-21
US9611074B2 (en) 2017-04-04
BR102013026221B1 (en) 2020-12-08
US20140124508A1 (en) 2014-05-08
CA2830725A1 (en) 2014-05-08
JP2014095698A (en) 2014-05-22
KR102023143B1 (en) 2019-09-19
CN103803179A (en) 2014-05-21
JP6275448B2 (en) 2018-02-07
ES2690857T3 (en) 2018-11-22
EP2730341B1 (en) 2018-07-11
KR20140059709A (en) 2014-05-16

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