EP2768620A1

EP2768620A1 - Cartridge and multi-component cartridge

Info

Publication number: EP2768620A1
Application number: EP12748479.8A
Authority: EP
Inventors: Josef Ettlin
Original assignee: Sulzer Mixpac AG
Current assignee: Medmix Switzerland AG
Priority date: 2011-10-17
Filing date: 2012-08-20
Publication date: 2014-08-27
Anticipated expiration: 2032-08-20
Also published as: US20140203023A1; EP2768620B1; JP6166729B2; US9555928B2; KR101968608B1; WO2013056874A1; KR20140079411A; CN103998149A; CN103998149B; JP2015501264A

Abstract

The invention relates to a cartridge, comprising at least one receiving chamber (2) extending in the longitudinal direction for a medium to be discharged, a head part (4), a base part (6) and a cartridge wall (3), which delimit the receiving chamber (2), wherein the head part (4) comprises an outlet (5) for the medium. The cartridge wall (3) is designed as a film (3). The head part (4) and the base part (6) are each designed as a dimensionally stable part, and the head part (4) is joined to the cartridge wall (3) in a sealed and non-detachable manner. The invention further relates to a multi-component cartridge.

Description

Cartridge and multi-component cartridge

The invention relates to a cartridge with at least one in

Longitudinally extending receiving chamber for a medium to be discharged, as well as a multi-component cartridge according to the preamble of the respective independent claim.

In the industrial sector, in the construction industry, for example of buildings, and also in the dental field cartridges are often used to store liquid flowable, often pasty or viscous to highly viscous substances and carry out as needed for each application. Examples of such substances are joint sealants, compounds for chemical dowels or chemical anchors, adhesives, pastes or molding compounds

Dentistry. Usually, these cartridges are made of plastic and are produced in an injection molding process.

A distinction is made between one-component system in which the material to be discharged consists of only one component, and two- or multi-component systems in which at least two different components are stored in separate chambers of the same cartridge or in separate cartridges, wherein the components in the

Discharging be intimately mixed by means of a dynamic or a static mixing device. Examples include two-component adhesive or chemical dowels, which only after mixing the two

Harden components. Especially in the industrial sector, two-component systems are also used for paints, which are often used for the production of functional protective coatings, eg for corrosion protection. It is often the case that the cartridges comprise one (or more) axially displaceable delivery pistons, by the movement of which the material is discharged from the chamber or the chambers. It is understood that for this purpose the chambers must have sufficiently thick walls in order to withstand the pressure arising during discharge can. In addition, the cartridges must have sufficiently thick walls to be sufficiently diffusion-tight. This is particularly important in terms of storage, to diffuse in or out diffusing the

chemical substances and thus to prevent a degradation of the cartridge contents as effectively as possible. Since such plastic cartridges are usually designed for single use, resulting from both the volume and the mass of a significant amount of waste, which is particularly disadvantageous from aspects of environmental protection.

A known alternative to the plastic cartridges are hoses in which the respective materials are stored. These hoses are then placed in special support or discharge devices to discharge your content for the particular application. Although such hoses are significantly cheaper, in particular, as regards the volume of waste

Cartridges, but they have other disadvantages. It clearly needs

more complex filling devices to fill and close the hoses. In addition, their storage is more problematic because hoses are not stable, so special measures or packaging must be provided for storage. Also, there may be problems with the tightness of such tubing. In addition, the mass of the

Residual volume in the hose, which can not be discharged, relatively high.

Hoses also have the disadvantage that they are very sensitive to mechanical influences, especially against sharp edges or sharp corners.

In addition to the aspect of environmental protection, the issue of sustainability is also becoming increasingly important. The use of renewable

Starting materials, the minimization of raw material and

Energy consumption and the greatest possible reduction of waste both in terms of the cartridge itself and in the Cartridge remaining volumes of residual mass are becoming increasingly important.

It is therefore an object of the invention to propose a cartridge, which is an improvement in terms of sustainability and environmental protection, in particular also with regard to their waste volume and their amount of waste. In this case, a high reliability and good storage life of the cartridge should be ensured. Furthermore, by the invention, a corresponding multi-component cartridge or

Multi-component application can be enabled. The object of the invention solving this object are characterized by the features of the independent claim of each category.

According to the invention, therefore, a cartridge is proposed with at least one longitudinally extending receiving chamber for a medium to be discharged, with a head part, a bottom part and a cartridge wall, which delimit the receiving chamber, wherein the head part has an outlet for the medium. The cartridge wall is designed as a foil, the head part and the bottom part in each case as a dimensionally stable part, and the head part is sealing and insoluble with the cartridge wall

connected.

Due to the dimensionally stable top and bottom part, the cartridge according to the invention offers the advantages of a conventional cartridge with regard to its filling and its storability, so it does not have to be elaborate

Filling devices are filled as required for hoses in the rule and can be stored much easier, for example, standing. The design of the cartridge wall as a film means in comparison to conventional cartridges a very substantial reduction of waste and a reduction of the raw materials required for the production. In addition, the design of the cartridge wall as a film brings a very high degree of flexibility with regard to the choice of material. The film may vary depending on

Use case adapted to the specific cartridge contents. The film also provides a very efficient diffusion barrier, so despite the Compared to today known cartridges greatly reduced wall thickness no concessions to the shelf life and the maximum storage time are necessary. Even with longer storage times, the cartridge contents are effectively protected against the outward or inward diffusion of substances or "outgassing." Preferably, the cartridge according to the invention is inserted into a reusable support cartridge when it discharges its contents, so that the cartridge wall withstands the mechanical loads during discharge.

Preferably, at the end bounded by the head part of the

Receiving chamber provided a protective film, which the

Closing the receiving chamber at this end sealing. As a result of this measure, the contents of the cartridge are also protected against diffusion processes through the front side or the head part.

In practice, it has proven useful if the cartridge wall has a wall thickness of at most 0.3 mm, preferably of about 0.1 mm. The thinner the cartridge wall is designed, the lower the raw material requirement for the production of the cartridge and the amount of waste after emptying the cartridge

A particularly advantageous measure is that the

Cartridge wall forming film is designed as a multilayer system.

As a result, it is possible, the film optimally to the respective

Use case to adapt. The properties of the barrier film can be tailored to make it as efficient as possible with respect to the media in the receiving chamber. Preferably, such a multilayer system is configured as a composite film. The

Multilayer system can also include metallic layers.

In a preferred embodiment, the cartridge

Connection means provided by means of which the cartridge with a second cartridge is connectable. These connecting means can

be configured in particular as a latch or as a click or snap connection. The connecting means are preferably arranged so that the two cartridges are connectable side by side side by side, so that their longitudinal directions or longitudinal axes are parallel to each other. The ability to connect multiple cartridges via the connecting means increases the flexibility with respect to the

Fields of application clearly, because in particular the cartridges can be used very easily for multi-component system.

In a preferred embodiment, the bottom part comprises a piston, which is insertable into the receiving chamber at the end facing away from the head part and can be displaced in a sealing manner along the cartridge wall in the longitudinal direction. The use of a piston in the receiving chamber for discharging the medium has the advantage that as a rule lower residual mass volumes remain in the cartridge, as a result of which the amount of waste is reduced. Furthermore, in chemical media in the

Recording chamber minimizes the risks associated with chemistry. The piston is preferably designed as a valve piston, so that a simple venting during insertion of the piston is possible

A further advantageous measure is that a dimensionally stable support ring is provided, which the cartridge wall on the for

Recording of the piston enclosing certain end of the receiving chamber from the outside. This support ring is particularly advantageous in terms of storage, because it improves the seal between the cartridge wall and the piston.

Preferably, a sealingly closing on the bottom part

End foil is provided. In combination with the in the field of

Head provided protective film and designed as a foil

Cartridge wall is then the medium in the cartridge completely surrounded by foil, i. completely wrapped in foil.

Further, it is advantageous if the bottom part or the support ring is sealingly and permanently connected to the cartridge wall. This is a particularly reliable protection of the medium, in particular during storage feasible. This connection can be realized, for example, by making the bottom part or the support ring in an injection molding process, in which the film forming the cartridge wall partially encapsulated with a liquid plastic. Because of this

Encasing it is possible to easily melt or to the film

plastisieren, so that they then enters into an intimate, permanent connection with the bottom part or with the support ring during cooling and solidification of the plastic. In an analogous manner, the connection between the head part and the cartridge wall can be realized. Of course, it is also possible, the connection between the head part or the bottom part or the support ring and the cartridge wall by a

Welding or gluing or clamping the parts together. In such cases, preferably, the head part and the bottom part and the optional support ring are each made in an injection molding and welded or glued or stuck in a subsequent processing step with the film forming the cartridge wall.

The invention further provides a multi-component cartridge

proposed with at least two cartridges according to the invention, wherein the two cartridges are arranged side by side with respect to the longitudinal direction. Through this multi-component cartridge, the field of application of the inventive cartridge on two- or

Expand multi-component systems. Preferably, the two cartridges are firmly coupled to each other via the connecting means, so that the multi-component cartridge forms a bearing and dischargeable unit.

A particularly advantageous measure is when the outlets of the cartridges form a common connecting piece or are designed for receiving a common connecting piece, wherein the

Connector for interacting with an accessory,

is designed in particular with a closure or with a mixer. In this way it is possible, for example, to use per se known accessories in conjunction with the multi-component cartridge. This compatibility is advantageous for practical and economic reasons

In order to protect the contents of the discharge chambers during storage, it is advantageous according to a preferred embodiment, if the Multi-component cartridge has a closure, the

Interaction with the connector is designed and has two plugs, each of which can engage in an outlet to close this. To increase the flexibility of the multi-component cartridge with respect to

Application areas and applications can be increased

Receiving chambers of the two cartridges have different volumes, so that in particular mixing ratios between the two media contained in the receiving chambers of the cartridges can be realized, which differ from the ratio 1: 1.

Further advantageous measures and embodiments of the invention will become apparent from the dependent claims.

In the following the invention will be explained in more detail by means of embodiments and with reference to the drawing. In the schematic drawing show partly in section:

Fig. 1: a first embodiment of an inventive

Cartridge in a longitudinal section

Fig. 2 shows a second embodiment of an inventive

Cartridge in a longitudinal section,

Fig. 3 is an exploded perspective view of a first

Embodiment of an inventive

Multi-component cartridge

Fig. 4 is an exploded perspective view of a second

Embodiment of an inventive

Multi-component cartridge

Fig. 5, the second embodiment of the inventive

Multi-component cartridge in a longitudinal section, 6 shows an illustration of the outlets of the first embodiment

7 shows an illustration of the outlets of the first embodiment with an attached mixer (only partially shown),

8 shows an illustration of the outlets of the second exemplary embodiment with an inserted connecting piece and an inserted closure,

9 shows an illustration of the outlets of the second exemplary embodiment with an inserted connecting piece and an attached mixer (only partially shown), FIG. 10 shows a view of a third exemplary embodiment of FIG

inventive multi-component cartridge,

Fig. 1 1 -12: representations of a discharge device, which for the

Cartridge according to the invention or the multicomponent cartridge according to the invention is suitable, and FIG. 13: the second embodiment of the invention

Multi-component cartridge in emptied state.

1 shows in a longitudinal section a first embodiment of a cartridge according to the invention, which is designated overall by the reference numeral 1. The cartridge 1 comprises a longitudinal direction

extending receiving chamber 2 for a medium to be discharged. The longitudinal direction is defined by the longitudinal axis A of the cartridge 1. The receiving chamber 2 is bounded by a cartridge wall 3, a head part 4, and a bottom part 6. The bottom part 6 comprises in this embodiment, a piston 8, which is not yet used in Fig. 1 in the receiving chamber 2, but outside of this is shown.

The receiving chamber 2 of the cartridge 1 is cylindrical, that is, the cartridge wall 3 is the lateral surface of a cylinder. The Head part 4 of the cartridge 1 has an outlet 5 with an outlet channel 51 for the medium, through which the medium can be discharged from the receiving chamber 2. The outlet 5 is formed here as a projecting tube to the head part 4. The head part 4 with the outlet 5 is injection molded in one piece, that is, it is in total in a single,

Usually manufactured one-step injection molding process.

According to the invention, the cartridge wall 3 is designed as a film 3 and the head part 4 and the bottom part 6 are each designed as a dimensionally stable part. By the term foil is meant a very thin sheet, the

especially made of plastic, metal or a combination of plastic and metal. Most films are not dimensionally stable, which means they can be bent, crumpled, folded or similar without much effort. In contrast, the head part 4 and the bottom part 6 are each designed as dimensionally stable parts, preferably plastic parts. By this is meant that these parts do not change their shape during normal use and are at most elastically deformable without considerable expenditure of force. Films are generally much thinner compared to the rigid parts. For the inventive cartridge

In particular, such films 3 are preferred as the cartridge wall 3, which are at most 0.3 mm, in particular at most 0.2 mm and preferably about 0.1 mm thick. That is, the wall thickness D of the cartridge wall 3 is

preferably at most 0.3 mm and in particular about 0.1 mm. For comparison, it should be mentioned that today known injection-molded plastic cartridges usually have a wall thickness of at least 1 .5 to 3 mm

The design of the bottom part 6 as a dimensionally stable part also has the advantage that the cartridge 1 is stable, that is, it can be stored upright on the bottom part 6 standing.

According to the invention, the head part 4 is sealing and insoluble with the

Cartridge wall forming film 3 is connected. This connection can, for example - as will be explained later - in

Injection molding process for the head part 4 can be realized by the film 3 is partially encapsulated with the liquid plastic, after its solidification the head part 4 forms. Alternatively, it is of course also possible to first produce the head part 4 as a separate component, which is then welded or glued to the film 3 or otherwise sealingly connected.

In the first embodiment, at the end of the cartridge wall 3, which adjoins the head part 4, a protective film 7 is provided which seals the receiving chamber 2 at this end. Because the

Receiving chamber 2 is cylindrical, the protective film 7 is circular and closes or seals the

Receiving chamber 2 at its the head part 4 facing end face.

In particular, the protective film 7 also prevents the medium from getting out of the receiving chamber 2 into the outlet channel 51.

The cartridge 1 may further comprise connecting means 10, by means of which the cartridge 1 with a second cartridge 1 is connectable. In the embodiment described here, the connecting means 10 are provided adjacent to the outlet 5 on the head part 4 of the cartridge 1. The

Connecting means 10 are preferably designed in a manner known per se as a click or as a snap or as a latching connection and arranged so that two cartridges 1 side by side so with parallel

Longitudinal axes A are arranged side by side (see, for example, Fig. 3). Alternatively or additionally, of course, connecting means along the

Cartridge wall 3 or be arranged on the bottom part 6.

At the end facing away from the head part 4, the cartridge 1 or the receiving chamber 2 is open. As the bottom part 6 is at the first

Embodiment, a piston 8 is provided, preferably as

Valve piston is designed, and which on the head part. 4

facing away from the open end of the cartridge 1 in the receiving chamber 2 is inserted. The piston 8 is designed and dimensioned such that it can be displaced sealingly in the longitudinal direction along the cartridge wall 3. For this purpose, the piston 8 may be configured in a conventional manner with sealing lips or sealing edges, not shown, which on the

Cartridge wall 3 abut when the piston 8 is inserted into the receiving chamber 2. The piston 8 is produced separately from the cartridge 1, for example, in an injection molding and usually used only after filling the receiving chamber 2.

An advantageous measure is that the piston on its surface facing away from the receiving chamber 2, ie that area which after insertion of the piston 8, the outside of the bottom of the

Cartridge 1 forms, a sealingly closing closure film. 9

provided.

At the end of the cartridge wall 3, on which the bottom part 6 is arranged, a dimensionally stable support ring 1 1 is further provided, which the

Cartridge wall 3 completely enclosed from the outside. In the direction of the longitudinal axis A, the support ring 1 1 has an axial height H in the

Substantially corresponds to the axial height of the piston 8. After the piston 8 is inserted into the receiving chamber 2, the support ring 1 1 supports the cartridge wall 3 in the region in which the piston 8 is located.

This results in a high sealing effect between the cartridge wall 3 and the piston 8, in particular during storage of the filled

Cartridge 1 guaranteed.

The support ring 1 1 is sealingly and permanently connected to the cartridge wall 3. This can be done in a similar manner as described above for the head part 4, namely by partial encapsulation of the cartridge wall 3 forming film 3 in an injection molding process, or by a separate bonding or welding of the support ring 1 1 and the film 3. The as a film 3 configured cartridge wall 3 also serves as a barrier or as a diffusion barrier, which diffuse in the or

Diffusion of substances prevented. These substances may be, for example, chemical constituents of the medium contained in the receiving chamber 2 or atmospheric moisture or oxygen. The film 3 thus enables a particularly long shelf life of the cartridge 1 filled with a medium. Because the film 3 acts as a barrier layer or diffusion barrier, it is possible to use the cartridge wall 3 only as a film 3 to design and thus with a thickness D, which is significantly lower than in known cartridges.

The greatly reduced thickness D of the cartridge wall 3 compared to known cartridges has the advantageous effect of significantly less

Raw material for the production of the cartridge 1 is needed and that the amount of waste usually designed for single use

Cartridge 1 significantly reduced both in terms of volume and on the weight.

The second advantageous effect of the designed as a foil cartridge wall 3 is that the film 3, the friction between the piston 8 and the

Cartridge wall 3 reduced compared to known cartridges. During use, for discharging the medium from the receiving chamber 2, the piston 8 is moved in the direction of the longitudinal axis A in order to convey the medium through the outlet channel 51. Here, the film 3 allows easier sliding of the piston. 8

The protective film 7 and the cover film 9 have the advantage that with them the entire receiving space 2 of the cartridge 1 is surrounded by a barrier layer or a diffusion barrier, that is, the medium in the

The receiving chamber 2 is completely surrounded by the foils 3, 7, 9 or enclosed by them, which is advantageous in view of a particularly good

Shelf life is advantageous. The foils 3, 7, 9 may - but need not - be configured identically in terms of their thickness D and their composition. For practical reasons, it is preferred if the films 3, 7, 9 each have a thickness of at most 0.2 mm, and preferably of approximately 0.1 mm.

Each of the foils 3, 7, 9 can be optimally adapted to the respective application. Depending on the composition and nature of the medium in the receiving chamber 2, the films 3,7,9 can be designed so that they have an optimal shelf life and optimum protection of

Cartridge contents and the head part 4 ensure. A particularly preferred measure is when, in particular, the film 3 forming the cartridge wall 3 is designed as a multilayer system, that is, for example, from a plurality of films laid on top of one another or

Layers is shaped. These different layers of the film 3 can have different functions. On the receiving chamber 2

For example, the facing side may be a protective layer which consists of a plastic which is insensitive to the medium to be discharged, for example polyamide (PA) or polybutylene terephthalate (PBT). This can optionally be followed by a barrier layer, which prevents the escape or entry of substances such as water, oxygen or VOC (volatile organic compounds). Then, for example, follow a filling layer, the z. B. consists of recyclate. Also, layers of a polyolefin such as PE or PP may be provided or metallic layers.

In addition or as an alternative, it is also possible to provide foamed films as a layer.

Also, the protective film 7 and the end foil 9 can be configured in the same way.

The inventive cartridge can in particular in a

Injection molding can be produced. As is common practice in injection molding, a tool is used which comprises cores and cavities into which the liquid plastic is injected. When closing the tool, the core moves into a correspondingly shaped

Counterpart. After closing the tool then exists between the core and the counterpart a cavity which is a negative image of the part to be produced. In this cavity, the liquid plastic is injected and solidifies there. Then the tool is opened, the molded part demolded and ejected.

For sealingly connecting the film forming the cartridge wall 3 and the head part 4 and / or the support ring 1 1, the film 3 on the

Mantle surface of that core can be applied, which is the

Receiving chamber facing side of the head part 4 and the inner surface of the support ring 1 1 forms. After closing the tool, the film 3 is partially encapsulated with the liquid plastic. In this case, the film 3 melts slightly due to the contact with the liquid plastic or is plasticized. This results in a particularly intimate and permanent connection between the cartridge wall 3 and the head part 4 b zw. The support ring 1 first

To produce the protective film 7, a circular disk-shaped film is placed on the end face of the core, which forms the side of the head part 4 facing the receiving chamber 2, before the injection molding, which then forms the protective film 7 in the finished cartridge. The circular disk-shaped film is preferably dimensioned so that it projects beyond the edge of the end face of the core. If then after closing the

Tool, the liquid plastic is injected, so this bends the part of the circular disc-shaped film, which protrudes beyond the edge of the end face of the core. As a result, the circular disk-shaped film 7 is intimately connected to the film 3, so that in the finished cartridge 1 a tight and firm connection between the cartridge wall 3 and the protective film 7 is made.

It is of course important that the films 3 and 7 adhere to the core until they are overmoulded with plastic. This adhesion can be realized in various ways, for example electrostatically or by generating a negative pressure through corresponding suction openings in the core

For the production of the head part 4, the bottom part 6 and the support ring 1 1 of the cartridge 1 are all known per se, for cartridges

used plastics such as polyamides (PA), polypropylene (PP), polyethylene (PE), polybutylene terephthalate (PBT), or polyolefins in general.

The cartridge 1 is first produced without the piston 8 by injection molding and is then closed by the protective film 7 - and optionally other closure means at its outlet 5. From the still open according to the illustration lower end of the receiving chamber 2, the medium is then filled into the receiving chamber 2. Subsequently, the piston

8, which is optionally provided with the cover sheet 9, inserted into the receiving chamber 2, and then forms the bottom of the chamber, the receiving chamber. 2 closes tightly. Frequently, the piston 8 is designed as a valve piston, so that when inserting the piston 8, the possibly present between the medium and the piston air is easily dissipated.

2 shows a longitudinal section of a second embodiment of a cartridge 1 according to the invention. The following is only on the

Differences to the first embodiment received. The im

Connection made with the first embodiment

Explanations apply mutatis mutandis to the same manner for the second embodiment. In particular, identical or functionally equivalent parts are provided with the same reference numerals.

A major difference is that at the second

Embodiment of the inventive cartridge 1 no piston is provided, but the dimensionally stable bottom part 6 is inextricably and sealingly connected to the cartridge wall 3. The one-piece bottom part 6 has two of the outer shape respectively substantially cylindrical portions, namely an upper portion 62 which engages in the receiving chamber 2 and thus represents the bottom boundary of the receiving chamber 2, and a base portion 61 which no longer than the film

embraced cartridge wall 3 is embraced. Consequently, the cartridge wall 3 extends with respect to the longitudinal direction to an edge 612, at which the upper region 62 and the base region 61 adjoin one another. Of course, this cartridge 1 is also capable of standing on the base area 61 of the fixed base part 6. The bottom part 6 is also here preferably an injection-molded plastic part, wherein for the materials

relevant explanations of the first embodiment apply.

Of course, it is also possible for the base region 61 to protrude beyond the cartridge wall 3 on the outside. As a result, serving as a cartridge wall film 3 is enclosed by both Seitzen.

In contrast to the piston 8 provided with the first

Embodiment, the second embodiment is collapsible

Cartridge 1 formed, that is, when discharging the medium from the Aufnahmekannnner the cartridge 1 is collapsed or collapsed with respect to the longitudinal direction. This will be explained later.

The dimensionally stable head part 4 is arranged in this second embodiment partly inwardly with respect to the cylindrical cartridge wall 3, that is, the film forming the cartridge wall 3 lies outside on the head part 4 and is sealingly and permanently connected to the head part.

Of course, here are possible embodiments in which the

Cartridge wall 3 on both sides, that is enclosed from the inside and the outside of the head part 4. At its upper end according to the illustration, the head part 4 has a collar 41, up to which the cartridge wall 3 extends. The outlet 5 is designed as a substantially cylindrical opening in the head part 4. As will be explained later (see, for example, Fig. 4), the outlet 5 in the second embodiment serves to receive an adapter 501 or 502 (Fig 4), which cooperates with an accessory, such as a closure or a mixer is designed.

Regarding the sealing, indissoluble connection between the

Cartridge wall 3 and the head part 4 and the bottom part 6 apply mutatis mutandis, the same explanations with respect to the first

Embodiment. Thus, for example, in the injection molding of the head part 4 and or of the bottom part 6, the foil forming the cartridge wall 3 can be partially back-injected with the liquid plastic. Alternatively, it is also possible, first the head part 4 and the bottom part 6 by means

To produce injection molding and then the cooled plastic parts, namely the head part 4 and the bottom part 6 in each case with the cartridge wall forming film 3 to be welded or glued or otherwise sealed to connect with each other.

It is understood that individual features which have been explained in connection with the second embodiment can be realized in a manner similar to the same in the first embodiment, and

vice versa. For example, in the first embodiment as well the head part 4 may be designed partly inwardly with respect to the cartridge wall 3.

Fig. 3 shows a perspective view of a first

Embodiment of an inventive

Multi-component cartridge, which is designated overall by the reference numeral 100. The multi-component cartridge comprises at least two cartridges 1, each of which is designed according to the invention. 4 shows a perspective view of a second exemplary embodiment of a multi-component cartridge according to the invention, which is also designated overall by the reference numeral 100. In Fig. 5, the second

Embodiment of the inventive multi-component cartridge 100 shown in a longitudinal section.

The first embodiment of the inventive

Multi-component cartridge 100 comprises two cartridges 1, each of which according to the first embodiment shown in FIG

according to the invention cartridge 1 is designed. The second

Embodiment of the multi-component cartridge 100 according to the invention comprises two cartridges 1, each of which is designed according to the second exemplary embodiment of the cartridge 1 according to the invention shown in FIG.

In the following, by way of example, reference is made to the case, which is particularly important in practice, in that the

Multi-component cartridge 100 is a two-component cartridge comprising exactly two cartridges 1. It is understood, however, that the

Invention is not limited to such cases, but that the

Mehrkomponentnkartusche may also include three or more cartridges.

The two cartridges 1 of the multicomponent cartridge 100 are arranged side by side side by side so that their longitudinal axes A (see FIGS. 1 and 2) run parallel to one another. The two cartridges 1 of the first exemplary embodiment (FIG. 3) are preferably firmly connected to one another via the connecting means 10. It But it is also possible that the two head parts 4 and / or the two support rings 1 1 of the cartridges 1 are manufactured in a common injection molding and are then connected non-destructively releasable elements firmly together so that the two-component cartridge with respect to the head parts 4 and / or the Floor parts 6 is one piece.

For each of the two cartridges 1, a piston 8 is provided in each case, which is introduced after filling the respective receiving chamber 2 in this. The two outlets 5 of the cartridges 1 are arranged and configured so that they form a common connecting piece 50, which comprises the two separate outlets 5, and the

Interaction with an accessory is designed.

Fig. 6 shows the connector 50 with the two outlets 5 in a larger view. In principle, it is not necessary to provide the two outlets 5 in the common connecting piece 50 with a closure, because the respective medium in the receiving chambers 2 is protected by the protective films 7 against diffusion processes and against leakage. However, it is understood that additional closure means may be provided, for example, in a similar manner as in the

In connection with FIG. 8 will be described. Fig. 7 shows the connector 50 and the outlets 5 with a

Accessory, namely with a mixer 70. This is a static mixer 70 for mixing the two media, which are present in the respective receiving chambers 2 of the two cartridges 1. The static mixer 70 comprises, in a manner known per se, a mixer pipe 72, only indicated in FIG. 7, with mixing elements (not shown) arranged therein. The mixer 70 further comprises two inlets 71 and a coupling 73. When the mixer 70 is placed on the multi-component cartridge 100, each of the separate inlets 71 engages in or via one of the outlet channels 51, so that the inlets 71 in each case with one of the outlets 5 a flow connection form and the respective medium from the respective receiving chamber 2 passes through the respective outlet 5 in the mixer 70. Here, the two media meet and are intimately mixed with each other as they pass through the mixer 70. For the connection of the mixer 70 with the connector 50 via the coupling piece 73 are all known types of

Connections, in particular screw, snap or bayonet connections.

If the cartridges 1 are provided with the protective film 7, as shown in FIG. 7, they must be pierced or pierced before the media is discharged. For this purpose, many possibilities are known to the expert. A

Variant is that the inlets 71 of the mixer - or

corresponding parts of another accessory - are designed at their ends cooperating with the outlets 5 ends, for example, with a bevelled edge 74 or a mandrel that the inlets 71 pierce the film 7 when placing the mixer 70 or otherwise open.

In the second embodiment of the inventive

Multi-component cartridge 100 (FIG. 4 and FIG. 5), the outlets 5 of the cartridges 1 for receiving a common connector 50 (not shown in Fig. 5) configured. The common connector 50 comprises - as shown in detail in Fig. 4 - two adapters 501 and 502, each of which is designed to engage in one of the outlets 5 and this outlet 5 quasi extended. The two adapters 501, 502 can be fixedly connected to one another via the connecting means 10 and then form the common connecting piece 50. As shown in detail in FIG. 4, the connecting means 10 are configured as latches, wherein in each case a rod-shaped locking element is attached to each of the adapters 501, 502

is provided, which in a recess at the other

Adapter 502, 501 engages, as indicated by the two arrows without reference numerals. Of course, it is also possible to produce the connector 50 in one piece, so that the two adapters 501, 502 are not separable from each other without destroying each other.

On the outlets 5 of the cartridge 1 side facing away from the

Connector 50 for cooperation with an accessory

designed. This accessory is shown in FIG. 4 as a closure 60 (not shown in FIG. 5). Fig. 8 shows the connecting piece 50 with the two outlets 5 in a larger view. In Fig. 8, the shutter 60 is in operative connection with the connector 50, which comprises the two adapters 501 and 502, which engage in the outlets 5 of the cartridge 1. It can be seen that the closure 60 has two plugs 61, each of which engages in one of the adapters 501, 502 and thus seals the outlets 5 in a sealing manner. The shutter 60 may be configured to be connected to the connector 50 only by inserting the plugs 61 into the adapters 501, 502. It may be provided securing means (not

shown), in order to prevent inadvertent removal of the closure 60, for example, predetermined breaking points, which are opened or broken before removal of the closure by kinking, turning or similar measures. The securing means can also be designed as latching or snap connections. It is also possible that the closure 60 can be coupled to the connector 50 via a threaded or bayonet connection.

Furthermore, it is possible that the two adapters 501, 502 have a directly molded closure element, which are opened or removed before use by means of peeling, cutting, breaking, rotating or similar measures

FIG. 9 shows the connecting piece 50 or the adapters 501, 502 with another accessory, namely with a mixer 70. This is a static mixer 70 for mixing the two media which are in the respective receiving chambers 2 of the two cartridges 1 available. The static mixer 70 comprises, in a manner known per se, a mixer pipe 72, only indicated in FIG. 9, with mixing elements (not shown) arranged therein. The mixer 70 further includes two inlets 71 and a

Coupling piece 73. When the mixer 70 is placed on the multi-component cartridge 100, each of the separate inlets 71 engages in or via one of the adapters 501, 502 so that the inlets 71 are each connected to one of the outlets

5 form a flow connection and the respective medium from the respective receiving chamber 2 passes through the respective outlet 5 in the mixer 70. Here, the two media meet and are intimately mixed with each other as they pass through the mixer 70. For the connection of the mixer 70 with the connector 50 via the coupling piece 73 are all known types of

Compounds, in particular screw, snap or

Bayonet connections. Fig. 10 shows the view of a third embodiment of a

In the following, only the differences from the first or second embodiment will be discussed in more detail. The explanations that have been made with respect to the first and second embodiments apply mutatis mutandis to the same manner for the third embodiment.

In the third embodiment, the

Multi-component cartridge two cartridges 1, wherein the

Recording chambers 2 of the two cartridges 1 have different volumes. Such multicomponent cartridges 100 are intended for those two-component systems in which the two components are to be mixed with one another in a ratio of 1: 1 by volume. In the multicomponent cartridge 100 shown in FIG. 10, the left-hand cartridge 1 according to the illustration has ten times the volume of the right-hand cartridge 1 according to the illustration. Of course, other ratios are feasible, for example, 2: 1 or 4: 1.

10, further connection means (not shown) may be provided between the two cartridges 1, for example between the two support rings 11.

It is understood that the multi-component cartridge according to the second embodiment in a similar manner to others

Mixing ratios can be designed as 1: 1.

As already mentioned, the two-component or multi-component cartridge 100 is preferably composed of two individual cartridges 1. Before filling the cartridges 1, the outlets 5 are - if necessary - closed with the shutter 60 or the protective films 7 close the

Outlets 5. From the still open the headboards 4 opposite ends of the Aufnahmekannnnern then the respective media or components are filled into the receiving chambers 2. Subsequently, in each case a piston 8, optionally provided in each case with the third film 9, inserted into the receiving chambers 2, which then forms the respective chamber bottom and the

Closing chambers 2 sealing. Often, the piston 8 are designed as a valve piston or self-venting piston, so that when

Insertion of the piston 8, the air present between the piston 8 and the medium can be removed. after the

Multi-cartridge 100 is filled, it can be stored with the cartridge wall 3 and the optionally provided protection or

Cover foil 7 or 9 protect the cartridge contents from outgassing or other diffusion-related influences.

In the embodiment according to FIG. 2 or FIG. 4, the filling is preferably carried out from the head part 4 through the outlet 5 or the outlets 5, which are then subsequently closed, for example, by means of the adapters 501, 502. The collapsible cartridges will be so

preferably filled from the headboard 4 from.

Referring to Figs. 1 1 and 12, the use of the two Zwzw. Multi-component cartridge 100 explained, the explanations in mutatis mutandis the same way applies to all embodiments. to

Use of the multi-component cartridge 100 is usually inserted into the holder of a dispensing device (dispenser) 200. Since the multi-component cartridge 100 due to the film 3 with thin

Cartridge walls 3 is designed, preferably a support cartridge 90 is used for the discharge, so that the multi-component cartridge 100 can withstand the mechanical stress during discharge. Alternatively, the support function can also be integrated in the holder of the discharge device. The support cartridge 90 is designed for multiple use, it can be reused as often as desired. As indicated by the arrow without reference numeral in Fig. 1 1, the multi-component cartridge 100 is first inserted into the support cartridge 90 and then inserted together with this in the holder of the discharge device 200. The closure 60, if any, is removed and, in its place, a mixer 70 is attached to the connector 50 by means of its coupler 73 (Fig. 12), here with a bayonet connection. The discharge device 200 comprises a double plug 210, which can be advanced by means of an activator 220. The double whip 210 then exercises in the case of the first

Embodiment, a force on the two pistons 8 in the

Receiving chambers 2, whereby they move along the longitudinal axes A of the cartridges 1 and promote the respective medium through the respective outlet 5 in the static mixer 70. Here, the two media (components) meet and are intimately mixed as they pass through the mixer. If the multi-component cartridge 100 according to the second embodiment is collapsible

Multicomponent cartridge designed so the double thrust 210 exerts a force on the two pistons dimensionally stable bottom parts 6, whereby they move along the longitudinal axes A of the cartridges 1, thereby collapsing the cartridges 1 and the receiving chambers 2 by pushing together. By pushing together, the respective medium is conveyed through the respective outlet 5 into the static mixer 70.

This collapse of the cartridges 1 for the second exemplary embodiment of the multicomponent cartridge 100 according to the invention is illustrated in FIG. 13, where a multicomponent cartridge according to the second exemplary embodiment is shown in the deflated state. It can be clearly seen how the cartridge walls 3 are each pushed together like an accordion between or above the dimensionally stable bottom part 6 and the fixed head part 4.

Claims

Cartridge with at least one receiving chamber extending in the longitudinal direction

(2) for a medium to be discharged, with a

Head part (4), a base part (6) and a cartridge wall

(3), which delimit the receiving chamber (2), the head part

(4) an outlet

(5) for the medium, characterized in that the cartridge wall (3) is designed as a film (3), the head part (4) and the base part (6) each as a dimensionally stable part, and that the head part (4) is sealing and is inextricably connected to the cartridge wall (3).

Cartridge according to claim 1, in which a protective film (7) is provided at the end of the receiving chamber (2) delimited by the head part (4), which sealingly closes the receiving chamber (2) at this end.

Cartridge according to one of the preceding claims, in which the cartridge wall (3) has a wall thickness (D) of at most 0.3 mm, preferably about 0.1 mm.

Cartridge according to one of the preceding claims, wherein the film (3) forming the cartridge wall is designed as a multi-layer system.

Cartridge according to one of the preceding claims, in which connecting means (10) are provided by means of which the cartridge can be connected to a second cartridge.

Cartridge according to one of the preceding claims, in which the base part

(6) comprises a piston (8) which can be inserted into the receiving chamber (2) at the end facing away from the head part (4) and can be moved sealingly along the cartridge wall (3) in the longitudinal direction.

7. Cartridge according to claim 6, in which a dimensionally stable support ring (1 1) is provided, which holds the cartridge wall (3) on the for

Recording of the piston (8) encloses certain end of the receiving chamber (2) from the outside.

8. Cartridge according to one of the preceding claims, in which a sealing closing film (9) is provided on the base part (6).

9. Cartridge according to one of the preceding claims, in which the base part (6) or the support ring (1 1) is sealingly and permanently connected to the cartridge wall (3).

10. Multi-component cartridge with at least two cartridges, characterized in that each cartridge (1) is designed according to one of claims 1 -10, wherein the two cartridges (1) are arranged next to one another with respect to the longitudinal direction.

1 1 . Multi-component cartridge according to claim 10, in which the two cartridges (1) are firmly coupled to one another via the connecting means (10).

12. Multi-component cartridge according to one of claims 10 or 1 1, in which the outlets (5) of the cartridges (1) have a common one

Form a connecting piece (50) or for receiving one

common connecting piece (50), the connecting piece being designed to cooperate with an accessory, in particular with a closure (60) or with a mixer (70).

13. Multi-component cartridge according to claim 12 with a closure (60) which is designed to cooperate with the connecting piece (50) and has two plugs (61), each of which can engage in an outlet in order to close it.

14. Multi-component cartridge according to one of claims 10-13, wherein the receiving chambers (2) of the two cartridges (1) have different volumes.