EP4355666A2

EP4355666A2 - Foil cartridge, support sleeve and cartridge system

Info

Publication number: EP4355666A2
Application number: EP22757498.5A
Authority: EP
Inventors: Tobias Bodenmüller; Marcel Richter; Richard LAVELANET
Original assignee: Medmix Switzerland AG
Current assignee: Medmix Switzerland AG
Priority date: 2021-07-22
Filing date: 2022-07-21
Publication date: 2024-04-24
Also published as: CN117715836A

Abstract

The invention relates to a foil cartridge which can be filled with at least one fluid, comprising a foil bag (12) as a cartridge casing and a rigid head part (14), the head part (14) comprising at least one outlet opening (16) for emptying the fluid of the foil cartridge (10) and at least one external thread (18) for fastening the foil cartridge (10) to a supporting sleeve (100), the foil bag (12) being fixed to the head part (14) in the region of the external thread (18).

Description

foil cartridge. Support sleeve and cartridge system

The invention relates to a film cartridge that can be filled with at least one fluid, consisting of a film bag as the cartridge shell and a rigid head part. The invention also relates to a support sleeve for folding or supporting a foil cartridge according to the invention and a cartridge system with at least one foil cartridge according to the invention, a support sleeve according to the invention and a piston.

For example, cartridges are filled with sealants or adhesives and used with a gun-type one or two component mixing or dispensing system to dispense the material contained therein. In some systems, such as the so-called side-by-side cartridge (double cartridge), for each receiving unit of the cartridge filled with sealant or adhesive, the mixing or delivery system has a piston that is designed to release the sealant or the to dispense adhesive from the cartridge. So-called coaxial cartridges can also be used, in which only one piston is used to discharge the material contained therein, with an outer cartridge surrounding an inner cartridge.

In view of the growing demand for more sustainable devices, mixing or dispensing systems are now often designed as reusable systems, so that only the cartridge has to be replaced when it has been completely emptied.

In addition, so-called foil cartridges are increasingly being used for the cartridges that need to be replaced. Unlike conventional Cartridges, which are produced entirely from plastic, foil cartridges can be formed at least partially as a foil or film. In most foil cartridges, the cartridge wall surrounding the cartridge chamber is designed as a film or foil and is connected to a rigid head part made of plastic, for example. This configuration has various advantages. On the one hand, cartridges that are not yet filled can be stored better and transported by the cartridge manufacturers to the fillers of the filling material (i.e. the adhesives, sealants, etc.), since the foil cartridges require significantly less space in the collapsed state. Only when it is filled does the film cartridge expand to its final size, which can be chosen as desired.

On the other hand, film cartridges are also significantly lighter than conventional plastic cartridges. This means that the foil cartridges are significantly smaller and lighter than conventional cartridges before and after use. This means that the disposal costs can also be significantly reduced.

In any case, the ecological footprint of a foil cartridge is significantly better than that of conventional cartridges made of plastic (e.g. by injection molding).

Compared to solid cartridges, foil cartridges have no inherent stability. Thus, foil cartridges, unless further supported, would collapse upon use. Therefore, in known systems (like derusable) support sleeves are provided, which serve as a kind of skeleton for the foil cartridge and give it the required stability.

Such support sleeves are usually made of metal and/or plastic to ensure that they can be used several times. In known systems, the head part of the foil cartridge is usually attached to a nem front end of the support sleeve is clamped so that the piston can press against the flexible cartridge wall from behind in order to empty it.

For this reason, it is an object of the invention to provide a cartridge that simplifies the replacement or attachment of the film cartridge to the support sleeve.

This object is achieved by the foil cartridge, the support sleeve and the cartridge rule system with the features of the independent claims.

In particular, the invention provides a film cartridge that can be filled with at least one fluid, the film cartridge consisting of a film bag as the cartridge case and a rigid head part. The head part comprises at least one outlet opening for emptying the fluid from the film cartridge and at least one external thread for fastening the film cartridge to a support sleeve, the film bag being fixed to the head part in the area of the external thread.

Advantageous developments of the invention can be found in the dependent claims, the description and the drawings.

According to one embodiment, the foil bag is fixed to an outside of the head part. The film bag can overlap the head part in a certain area, so that it can be molded, glued or otherwise fixed to the head part.

According to one embodiment, the film bag is attached to the head part in such a way that the film bag encloses the external thread or is in positive contact with the external thread. This means that the film bag can be tensioned so that the film bag lies over the external thread but sem but snuggles up in such a way that it does not prevent the film cartridge from being screwed onto a support sleeve.

According to an alternative embodiment, the film bag is fixed to an inside of the head part. It is also possible for the head part to be designed in such a way that the film bag is attached to an inside of the head part.

According to one embodiment, the film bag is glued to the head part.

According to one embodiment, the head part is formed onto the film bag. In other words, the film bag can be molded onto the head part, regardless of whether it is to be fixed to the head part on the outside or inside.

In principle, the rigid head part can be connected to the flexible film bag by gluing, shrinking or welding. A mechanical connec tion using a clip or a clamp - with or without a ring - is conceivable.

According to one embodiment, the film bag has at least one coating on an inside and/or on an outside. For example, it can be advantageous if the film bag has a non-stick coating on the inside in order to be able to empty the film bag as best as possible during use. It may also be the case that coatings are necessary to prevent the contents of the foil pouch from reacting with the materials of the foil pouch itself.

According to one embodiment, the film bag is formed from at least two layers, in particular several layers, in particular an inner layer and an outer layer. It should be noted that the inner layer is the innermost layer of the foil bag and the outer layer is the outermost layer of the foil bag. If further layers are arranged in between, these are each intermediate layers. According to one embodiment, the at least two layers are formed from different materials. Thus, the foil bag can be optimally adapted for its later use.

According to one embodiment, the layers each have a thickness of between 4 and 100 μm.

According to one embodiment, the at least two layers have different thicknesses. The exact thickness of each layer can vary depending on the application and can be chosen appropriately.

According to one embodiment, at least one layer of the foil bag contains aluminum.

According to one embodiment, the at least two layers are connected to one another by at least one composite film. In particular, all the existing layers can be connected to one another with a composite film.

According to one embodiment, the film bag has a third layer, which is arranged between the inner layer and the outer layer, and the third layer in particular has aluminum.

In order to minimize the permeation, in particular the oxygen permeation and the water vapor permeation of the film bag, the film bag can have a further layer which is arranged in particular between the inner layer and the outer layer which has ethylene-vinyl alcohol copolymer (EVOFI). This layer, which comprises or consists of the ethylene-vinyl alcohol copolymer, can be arranged between the inner layer and the outer layer. Preferably the layer is with or made of ethylene vinyl alcohol Copolymer placed right next to the outer layer and/or right next to the inner layer.

According to one embodiment, the outer layer of the foil bag is made of the same material as the rigid head part. As a result, the outer layer can be easily connected to the rigid front part by means of injection molding.

According to a further embodiment, the inner layer of the foil bag comprises a plastic, in particular a thermoplastic. This improves the recyclability of the film bag while at the same time simplifying the manufacture of the film bag.

According to one embodiment, the inner layer of the foil bag has the same material as the rigid head part. Preferably, the inner layer and the outer layer of the foil pouch are made of the same material as the rigid head.

According to a further embodiment, the inner layer of the foil bag is made of the same material as a part of the rigid head part which is connected to the foil bag.

As a result, the film bag can be connected to the rigid head part even more easily by means of injection molding.

According to one embodiment, the inner layer has a Shore D hardness between 40 and 99, in particular between 40 and 60.

The inner layer of the foil bag can be made, for example, from polyethylene, polypropylene, polyamide, polyethylene terephthalate or polybutylene terephthalate being. The inner layer can, for example, contain polyamide in the form of PA-6 or PA-66. Polyamide has the advantage that it has high mechanical stability and this stability can be further increased by stretching. Polyethylene terephthalate (PET), on the other hand, is inexpensive and has good chemical resistance.

According to a further embodiment, the outer layer of the film bag has a plastic, in particular a thermoplastic.

According to one embodiment, the outer layer has a Shore D flatness between 40 and 99, in particular between 40 and 60.

The outer layer of the film bag is advantageously made of polyethylene, polypropylene, polyamide, polyethylene terephthalate or polybutylene terephthalate. The outer layer can, for example, contain polyamide in the form of PA-6 or PA-66.

According to yet another embodiment, the rigid head part has a plastic, in particular a thermoplastic.

In particular, the rigid head part has a Shore D hardness of between 40 and 99, in particular between 40 and 60.

Advantageously, the rigid head may be made of polyethylene, polypropylene, polyamide, polyethylene terephthalate or polybutylene terephthalate. The rigid front part can, for example, have polyamide in the form of PA-6 or PA-66. Polyamide has the advantage that it has high mechanical stability and is therefore well suited for the rigid front part. Polyethylene terephthalate (PET) could also be used for the rigid front part. PET is easy to process and has high chemical resistance. According to one embodiment, the rigid head is made of high density polyethylene (HDPE), wherein high density polyethylene (HDPE) has a density in the range of 930 kg/m ³ to 970 kg/m ³ .

According to one embodiment, the foil bag is closed by a welded seam at a rear end remote from the rigid head part. The shape of the rear end can be, for example, dome-shaped or conical. In general, the rear end of the foil bag can taper continuously ver. As an alternative to this, the film bag can have a rear side which is designed to be essentially flat.

According to one embodiment, the foil bag is closed by a clip at a rear end remote from the rigid head part. Such a clip can be made of plastic, for example.

According to one embodiment, the foil bag is closed at a rear end remote from the rigid head part by means of an adhesive.

According to one embodiment, the film bag is designed to be rigid in the pulling direction. The foil bag thus has a defined length when filled and can therefore be safely inserted into a cartridge system.

The film bag preferably withstands a tensile load of 50N to 80N in the axial direction. In other words, the film bag has a tensile strength of at least 50N in the axial direction. This prevents the film bag from tearing due to tensile stress.

According to one embodiment, the film bag has a puncture resistance of between 10N and 20N. The puncture resistance can be determined using the DIN standard EN 14477, r=0.4 mm for sharp objects or determined using standard ASTM F 1306 for blunt objects. The puncture resistance can be in the range of 10 N to 20 N for at least one of the two test standards. Preferably, the puncture resistance for both test standards is in the range of 10N to 20N.

The inner layer preferably has a greater thickness than the outer layer. The inner layer can have, for example, more than 1.5 times the thickness of the outer layer. Preferably, the inner layer has a thickness that is more than twice the thickness of the outer layer.

According to one embodiment, the inner layer has a minimum thickness of 50 μm to 90 μm. The inner layer preferably has a minimum thickness of 55 μm to 80 μm. The minimum thickness of the inner layer can be chosen depending on the material used for the inner layer and the volume of the filling material.

According to one embodiment, the foil bag has a total material thickness of between 80 μm and 150 μm. The film thickness can be determined according to DIN EN ISO 4593. The film bag preferably has a total material thickness of between 110 μm and 150 μm.

According to one embodiment, the film bag can have a total area weight of between 100 g/m ² and 170 g/m ² . The total basis weight can be determined according to DIN EN ISO 2286-2. The film bag preferably has a total surface weight of between 120 g/m ² and 150 g/m ² .

According to one embodiment, the film bag has a water vapor permeation of at most 0.3 g/(m ² ×d), in particular at most 0.2 g/(m ² ×d). The water vapor permeation is determined using the ISO 15106-3 standard (38°C / 90% RH) measured. The film bag preferably has a water vapor permeation which, with the ISO 15106-3 standard (38° C./90% RH), is in the no longer measurable lower range, ie close to 0 g/(m ² ×d).

According to a further embodiment, the film bag has an oxygen permeation of at most 0.3 cm ³ /(m ² x bar x d), in particular at most 0.2 cm ³ / (m ² x bar x d). Oxygen permeation is measured using the ASTM D3985 standard (23°C / 90% RH). The film bag preferably has an oxygen permeation which, with the ASTM D3985 standard (23° C./90% RH), is in the lower range that can no longer be measured, ie close to 0 cm ³ /(m ² ×bar×d).

According to one embodiment, the foil bag has a wall thickness or foil thickness of at least 60 μm. The foil bag preferably has a wall thickness or foil thickness of at least 80 μm. Fliering ensures that the film bag has sufficient mechanical properties.

According to one embodiment, each of the layers of the film bag has a thickness of at least 4 μm, in particular at least 5 μm. However, any adhesion promoters that may be present between the layers and that serve to connect the layers to one another are not regarded as a layer. The adhesion promoters that may be present between the layers can have a thickness of less than 5 μm. Adhesion promoters are preferably provided between layers of different materials, which have a thickness of 5 μm or less.

According to one embodiment, an adhesion promoter is arranged at least between two layers of the foil bag and binds the two layers together. If the two layers are made of different materials, An adhesion promoter is advantageous, since it is otherwise more difficult to connect layers made of different materials.

According to one embodiment, the adhesion promoter has a thickness of 1 gm to 5 gm. The thickness of the adhesion promoter layer should not be less than 1 gm, otherwise no or too little adhesion promoter could be applied in some places due to tolerance fluctuations. It has also been found that an adhesion promoter thickness of more than 5 gm does not bring about any additional improvement in the adhesion between the layers of the film bag.

In this connection it should be mentioned that each of the layers of the film bag can have a thickness between 4 gm and 100 gm. In particular, each of the layers of the film bag can have a thickness between 5 gm and 70 gm. According to a special embodiment, all layers of the film bag, except for the inner layer, have a thickness of between 5 gm and 30 gm.

According to one embodiment, the at least one film bag has an essentially cylindrical outer shape. Alternatively or additionally, the at least one film bag has a weld seam in the axial direction. The weld seam can be designed as a fin seam, which is often referred to as "fin seal". Alternatively, the weld seam can also be designed as an overlap seam, which is often referred to as “overlap seal”.

According to one embodiment, the outer layer of the foil bag is connected over a large area to an inner wall of the front part. In other words, the outer layer of the film bag is not only connected to the inner wall of the front part by line contact, but over a width of at least 2 mm. For applications in the field of medical technology or for smaller jobs in the construction sector, it can be advantageous if the film bag has a volume in the range from 50 ml to 750 ml. A film bag preferably has 100 ml, 200 ml or 500 ml.

On the other hand, for larger jobs, especially in the construction sector, it can be advantageous if the film bag has a volume in the range from 750 ml to 5000 ml. For example, the at least one foil bag can have a volume of 1000 ml, 1250 ml, 1500 ml, 2500 ml or 4000 ml.

In order to avoid confusing the cartridges and to find out easily what the foil bag was filled with, a designation for the contents of the foil bag or the cartridge can be applied to the outside of the foil bag. This designation is preferably applied to the foil bag just before the foil bag is filled or after the foil bag has been filled. This minimizes errors when applying the designation.

According to one embodiment, the head part has one or more stiffening ribs on a side facing away from the film bag. The ribs can extend, for example, over the side of the rigid head part that faces away from the film bag. The ribs can thus be used to stabilize the area around the outlet opening, to better absorb forces that are transmitted to the head part during discharge and to prevent the head part from deforming.

In this connection it should be mentioned that the one or more stiffening ribs can be arranged in the circumferential direction. Alternatively or additionally, the plurality of stiffening ribs can also extend in the radial direction, starting from a central axis of the foil cartridge.

In any case, the stiffening ribs can increase the stability of the head part, so that the head part withstands the pressures that arise when the fluid is pressed out of the head part.

According to one embodiment, the head part is essentially dome-shaped. Advantageously, the stiffening ribs can be arranged on the dome. A dome-shaped configuration has proven to be particularly advantageous both for optical and haptic reasons. In addition, the film cartridge can be emptied in the best possible way with such a configuration.

According to one embodiment, the head part has at least one wing, which is arranged in particular on the dome. Such a wing can act as a handle for the foil cartridge, allowing a user to easily screw the foil pouch on and off the support sleeve.

The wing may be larger than at least one of the one or more stiffening ribs. This ensures that the user can operate the wings without the stiffening ribs being in the way.

According to another embodiment, the wing has a flea larger than a flea of at least one of the one or more stiffening ribs. That is, the wing can be higher than the stiffening ribs so that the user can easily grab it.

According to one embodiment, the wing has at least essentially the same thickness, in particular exactly the same thickness, as the one or more re stiffening ribs. In this context, the term "substantially the same" is to be understood in such a way that the thickness of the wing does not differ by more than +1-5% from the thickness of the stiffening ribs.

In particular, an embodiment with exactly the same thicknesses of wings and stiffening ribs has proven to be particularly simple and cost-effective in the first position.

According to one embodiment, the head part has a circumferentially arranged web area which extends over a front end of the film bag facing the head part. Such a web can beispielswei se serve as a stop for a support sleeve when these two parts are connected.

According to a further embodiment, the head part has at least one alignment element which is designed to align the head part with respect to a support sleeve. The alignment element can take a variety of forms as long as it is capable of aligning the header with a support sleeve. For example, it can represent a marking, a projection or a recess or the like, which must be brought to a specific position on the support sleeve in order to properly align the head part. In principle, other configurations for the alignment element are also possible.

Furthermore, the alignment element can be provided radially on the outside of the head part. With such a position of the alignment element on the head part, the alignment element is arranged in such a way that it is provided as close as possible to the support sleeve when the film cartridge is inserted into a support sleeve in order to facilitate the alignment of the head part. In this context, it can also be provided that the alignment element is arranged on the web area.

In particular, it is also possible for the alignment element to be arranged on the front side, i.e. in the direction of the outlet on the head part. Such an alignment can facilitate handling for a user since he can easily see the alignment element for aligning the head part on a support sleeve.

According to a further embodiment, the alignment element is arranged in the area of at least one radial stiffening rib.

According to an alternative embodiment, the alignment element is arranged in the area of at least one wing, preferably between two wings.

According to a further embodiment, the head part has at least one alignment projection, which is designed to align the head part at a predetermined angle with respect to a support sleeve.

For this purpose, the alignment projection can be arranged on a side of the head part facing the film bag, so that it is also aligned in the direction of the support sleeve when the film cartridge is connected to a support sleeve.

In addition, it would also be conceivable for the alignment projection to be arranged on the web area. Accordingly, the alignment projection would be located at the radially outer portion of the head portion, where the support sleeve often comes into contact with the head portion.

According to one embodiment, the outlet opening of the head part has a substantially constant cross section. According to a further embodiment, the outlet opening has an internal thread to which an outlet nozzle can be attached.

According to an alternative embodiment, the outlet opening has an external thread to which an outlet nozzle can be attached.

In principle, outlet nozzles can be used for better and more precise dosing of the fluid that is in the cartridge.

According to a further embodiment, when the film bag is in the filled state, the outlet opening is closed with a membrane which can be pierced in particular through the outlet nozzle. Closing the outlet opening is primarily used to ensure that the foil cartridge can be stored and transported without leaking. In particular, it can also be the case that the fluid in the cartridge reacts with oxygen, so that it must be stored under a protective atmosphere. By closing the outlet opening, a reaction with oxygen can be avoided until use.

According to one embodiment, the outlet opening is arranged on a side of the dome of the head part that faces away from the foil bag.

According to a further embodiment, the head part has an outlet area in which the outlet opening is formed and which extends along a central axis of the film cartridge. In other words, the outlet opening can be configured in a region of the head part that protrudes along the central axis. Flowing through the dosing of the fluid can be optimized. In addition, this can also make it easier to attach an additional outlet nozzle to the head part. The outlet area can be essentially tubular and have a wall thickness of between 0.5 and 1.5 mm, at least in some areas. A good compromise between sufficient stability and material costs is achieved here.

The outlet area can also have a length of between 5 mm and 40 mm, in particular between 20 and 30 mm. The outlet area should be as short as possible in order to be able to completely empty the foil bag, but still be long enough to be able to attach an outlet nozzle to it, for example.

The invention also provides a support sleeve for holding or supporting a foil cartridge according to the invention, wherein the support sleeve can also have an internal thread that corresponds to the external thread of the foil cartridge.

According to one embodiment, the support sleeve is made of metal, in particular aluminum, and/or plastic. Such materials enable relatively quick and inexpensive production, while at the same time the desired rigidity of the support sleeve can be achieved.

According to one embodiment, the support sleeve is designed in one piece.

According to an alternative embodiment, the support sleeve is designed in several parts. For example, a front and a rear part can be produced independently of one another and only joined together at a later point in time to form the support sleeve. It is possible here for the support sleeve to have at least one, in particular several, connection points in order to connect the various parts of the support sleeve to one another.

The at least one connection point can be designed as a thread, as a bayonet connection or as a click lock. In this way, the various parts of the support sleeve can be detachably connected to one another.

According to one embodiment, the support sleeve comprises an inner inner sleeve and an outer sleeve. The inner sleeve can be used, for example, to hold the outer sleeve. In addition, the film cartridge can be better protected by such a configuration.

According to one embodiment, the inner sleeve is movable, in particular sliding tend, arranged in the outer sleeve. For example, it may be possible for the outer sleeve to be connected to the head part, while the inner sleeve is only used to protect the foil cartridge.

According to a further embodiment, the internal thread is a multi-start, in particular a double-start, thread.

According to yet another embodiment, the support sleeve further includes at least one alignment member configured to align the support sleeve at a predetermined angle with respect to the head portion.

The alignment member may also be configured to cooperate with an alignment element. This means that the alignment member can be designed, for example, in such a way that it corresponds to the alignment element of the foil cartridge or interacts with it in order to align the head part and the support sleeve with one another.

According to a further embodiment, the support sleeve comprises an alignment recess which is designed to align the support sleeve at a predetermined angle to the head part. The alignment recess can act as a support to the alignment member. However, the alignment recess can also be designed in such a way that it fixes the support sleeve relative to the head part when they are aligned accordingly.

According to yet another embodiment, the alignment recess is configured to cooperate with the alignment projection of the header. This means that the alignment recess can be designed in such a way that the alignment projection of the head part can engage or penetrate into the alignment recess of the support sleeve in order to align the support sleeve relative to the head part or, if necessary, also to fix it.

Furthermore, it can also be provided that the alignment recess comprises a folding projection, which is designed in such a way that the head part is fixed to the support sleeve in the circumferential direction. This flange projection can be designed and positioned, for example, such that when the head part is aligned as desired relative to the support sleeve, the alignment projection of the head part is held radially by the flange projection and is thus fixed.

In a further embodiment, the support sleeve also comprises at least one ventilation hole, which is arranged in an area adjacent to the internal thread. Through the at least no ventilation hole, air that is located within the support sleeve can escape, for example, when a piston is moved in the direction of the head part of the film cartridge. In addition, in some embodiments, the support sleeve can also include a stop collar in the area of the internal thread, which is designed to provide a stop surface for a piston.

It is also conceivable that the stop collar extends around the circumference around an inner surface of the support sleeve (100).

The invention also provides a cartridge system with at least one foil cartridge according to the invention, a support sleeve according to the invention and a piston, the piston and the foil cartridge being arranged in a receiving area of the support sleeve and the foil cartridge being screwed to the internal thread of the support sleeve via its external thread. so that part of the support sleeve covers part of the head part of the foil cartridge. The support sleeve also includes at least one radial pin, which is arranged on an end of the support sleeve facing away from the head part of the film cartridge, in order to attach the support sleeve, in particular detachably, to a discharge system.

According to one embodiment, the at least one radial pin is mushroom-shaped. In particular, the radial pin can be mushroom-shaped in a side view. Radial pins with a head part and a cylindrical part can be advantageous, for example, if the support sleeve is to be fixed to a discharge system, since the guidance of the radial pin in a corresponding recess is optimized by the special mushroom-like design.

In this context, it is also possible for the radial pin to be designed to cooperate with corresponding counter-elements, in particular recesses, on the discharge system, so that the support sleeve is firmly attached to the discharge system. According to a further embodiment, the cartridge system further comprises a protective ring which is designed to be attached to the support sleeve. The protective ring protects against accidental triggering of a release button or lever of a dispensing device. For this purpose, the protective ring can be moved under a trigger of a dispenser, ie a discharge device, so that the release button or lever cannot be moved in the direction of the discharge device.

Alternatively, however, it can also be possible for the trigger to be brought under the protective ring in order to be able to generate a constant triggering of the trigger and thus a constant discharge of material. For this purpose, the protective ring can have one or more bulges, for example, under which the trigger can be moved.

In the case of several bulges, these can have different heights, which correspond to different trigger positions. Different trigger positions can, for example, correspond to different discharge speeds or pressures.

It is also possible for the protective ring to be arranged on the support sleeve in an axially displaceable manner, in order thus to make it possible to bring the protective ring over or under the trigger or to move it away from it.

In addition, it can also be provided that the protective ring is arranged on the support sleeve such that it can be rotated radially, in order to be able to rotate it in the circumferential direction and thus bring it into different positions. This can be of advantage, for example, if the protective ring has various bulges. Because it can be rotated radially, the protective ring can simply be rotated into the desired position relative to the trigger. The protective ring can also include at least one support by means of which the support sleeve can be held. This has the advantage, for example, that the support sleeve can be held in an at least essentially horizontal position by the support of the protective ring, so that an unintentional escape of material from the outlet opening can be avoided.

According to a further embodiment, as already mentioned above, the guard ring can have at least one bulge which is designed to cooperate with a trigger.

In addition, it can also be provided that the protective ring has a plurality of bulges, which in particular have different heights, the bulges being designed to cooperate with the trigger.

According to yet another embodiment, the piston may have a peripheral annular projection adapted to receive the compressed foil bag. The annular projection can be used, for example, to accommodate those parts of the film bag that have already been emptied, so that the film bag can ideally be emptied completely, or at least almost completely.

In addition, it can also be provided that the piston also has a substantially dome-shaped middle part, which is designed to compress the foil bag in the direction of the head part. In this case, the head part can have a shape that is complementary to the piston. It has been shown that foil cartridges with dome-shaped pistons or head parts can be emptied better, so that less residual material remains inside the foil bag. Accordingly, a dome-shaped design can contribute to better emptying of the foil cartridge. The invention also relates to a discharge device with a cartridge system according to the invention, further comprising a trigger for triggering an axial movement of the piston and a protective ring, which is designed to prevent the trigger from being triggered and/or to ensure that the trigger is triggered constantly and/or or maintaining the discharge device in an at least substantially horizontal position to avoid spillage of material when the trigger is not actuated.

The invention is described below using purely exemplary embodiments with reference to the accompanying drawings. Show it:

1 : a perspective view of a device according to the invention

foil cartridge;

FIG. 2: a bottom view of the film cartridge from FIG. 1;

FIG. 3: a plan view of the film cartridge from FIG. 1;

figs 4 and 5: side views of the head part;

6: a perspective view of the head part;

7: a sectional illustration of the head part;

figs 8 and 9: side views of the film cartridge according to the invention;

10: perspective views of a further embodiment of the head part; 11: detailed views of the connection between the head part and the film cartridge;

Fig. 12: a sectional view of a piston within the support sleeve;

13: a perspective view of a support sleeve according to the invention;

figs 14 and 15: side views of the support sleeve from FIG. 13;

FIG. 16: a bottom view of the support sleeve from FIG. 13;

FIG. 17: a plan view of the support sleeve from FIG. 13;

18: perspective views of the protective ring; and

Fig. 19: Sectional views of the piston and the piston within a support sleeve in the area of the head part of the foil cartridge.

Fig. 1 shows a foil cartridge 10 according to the invention, which can be filled with at least one fluid. The film cartridge 10 comprises a film bag 12 as a cartridge shell and also a rigid head part 14, which is shown in the figure above. The head part 14 has an outlet opening 16 through which the fluid can flow when the film cartridge 10 is emptied. In addition, the head part 14 includes an external thread 18 which is designed to interact with a corresponding internal thread 102 of a support sleeve 100 in order to thereby attach the foil cartridge 10 to the support sleeve 100 . The foil bag 12 can be fastened to the head part 14 in two different ways. On the one hand, it is possible for the film bag 12 to enclose the head part 14 from the outside, so that part of the film bag 12 is in positive contact with the external thread 18 and envelops it, so to speak (see FIG. 1). On the other hand, it is basically also possible for the film bag 12 to rest against an inner surface (not shown) of the head part 14 from the inside and for example to be glued or molded there to the head part 14 .

Regardless of whether the foil bag 12 is fastened outside or inside the head part 14 be, various methods of attachment are conceivable. The film bag 12 can therefore be glued equally to the head part 14 or also be formed. Other fastening methods are also conceivable.

In FIGS. 1 and 4 to 7 it can also be seen in particular that the film bag 12 has creases 20 in the area where it is attached to the head part 14 . This is often a sign that the foil bag 12 is tensioned in this area in order to achieve a good seal between the foil bag 12 and the head part 14, particularly in the case of a foil bag 12 which is attached externally via the external thread 18 .

As can be seen in FIGS. 1, 8 and 9, the film bag 12 has an essentially cylindrical shape. In this context, it should be mentioned that the figures show the film bag in the expanded state—that is, in the filled state. Due to its flexibility, the film bag 12 can be folded or compressed in the emptied state and thus made significantly smaller. This has proven to be particularly advantageous for the storage and transport of empty film cartridges 10.

The foil bag 12 can either be designed in one piece on its lower side (as seen from FIG. 1) (see in particular the view from below in FIG. 2) or but can also be closed by a seam, adhesive point, clip or the like. This can be freely selected depending on the area of application and preferences.

In this context, it should also be mentioned that the film bag 12 can also have at least one seam along its longitudinal axis M, along which it is closed.

It is also possible for the foil bag 12 to be formed from two or more layers, in particular an outer layer and an inner layer, which are connected to one another by a composite film or an adhesion promoter. However, this is not further illustrated in the figures since it is already known how multi-layer film bags 12 can be produced.

The length and the diameter of the foil bag 12 (and thus indirectly also of the head part 14) can be selected appropriately depending on the application. In principle, there are no limits here.

The head part 14, which is shown in detail in FIGS. 3 to 7, will be discussed in more detail below.

The head portion 14 is made of a rigid material such as plastic and/or metal.

As already mentioned above, the head part 14 has an external thread 18 in the area where it is connected to the film bag 12 , which serves to fix the film cartridge 10 to an internal thread of a support sleeve 100 . The support sleeve 100 will be discussed in more detail below. The external thread 18 can be designed as a multi-start thread, in particular as a double-start thread. Above the external thread 18, the head part 14 also has a rich Stegbe 22, which extends once around the entire head part 14 in the circumferential direction. The web area 22 increases the diameter of the head part 14 to such an extent that it protrudes beyond the external thread 18 and thus serves as a stop 24 when the foil cartridge 10 is fastened to the support sleeve 100 . This can be clearly seen in FIG.

Furthermore, the head part 14 has a dome-shaped bulge 26 which is formed on a side of the head part 14 facing away from the film bag 12 . Since comparatively high pressures can act on the head part 14 when the foil cartridge 10 is emptied, a dome-shaped configuration has proven to be advantageous in order to be able to distribute the resulting pressure evenly over the surface of the head part 14 . In addition, the film bag 12 can be better emptied overall by such a configuration, since the fluid in it always flows in the direction of the outlet opening 16 when pressure is exerted on the film cartridge 10 from behind.

To further reinforce the head part 14, in particular in the area of the dome 26, several stiffening ribs 28 are formed. The stiffening ribs 28 can be arranged both in the circumferential direction and also radially, as can be seen in particular in FIGS. In any case, the stiffening ribs 28 serve to intercept and better distribute the pressure acting on the head part 14 .

Also arranged in the radial direction, starting from the outlet opening 16 , are two wings 30 which are designed to be actuated by a user in order to screw the film cartridge 10 onto the support sleeve 100 or to remove the latter from the support sleeve 100 . The wings 30 usually have a larger fleas, in particular a larger area, than, for example, the radially arranged stiffening ribs 28. As a result, the wings 30 protrude farther away from the head portion 14 and dome 26, respectively, so that a user can easily grasp and manipulate the wings 30.

However, in some embodiments, the wings 30 have the same or substantially the same thickness as the stiffening ribs 28 . That is, the thicknesses of the wings 30 and stiffening ribs 28 do not differ by more than 5% from each other. Such an embodiment has proven to be particularly advantageous in particular with regard to an efficient and cost-effective release position.

The exact number of wings 30 and the stiffening ribs 28 can be freely selected as required. It is thus possible, for example, for foil cartridges 10 with a larger total volume that the head part 14 has more stiffening ribs 28 than a foil cartridge 10 with a smaller volume.

Also formed in the head part 14 is an outlet region 32 which extends along a central axis M of the film cartridge 10 . This outlet area 32 has an internal thread 34 (see FIG. 7) to which, for example, an outlet nozzle (not shown) can be fastened in order to ensure precise dosing of the fluid. It would also be possible for the outlet area 32 to have an external thread to which such a connection piece can be attached.

The size or fleas of the outlet area 32 can be chosen arbitrarily and accordingly configured appropriately depending on the area of application. Here, too, it can be possible that larger outlet nozzles are to be attached to larger foil cartridges 10, for which a longer thread may be necessary than with smaller versions. In the embodiment shown, the outlet area 32 extends parallel to the central axis M. In principle, however, it is also possible that the outlet area 32 and thus also the outlet opening 16 are not arranged centrally on the head part 14, but at an angle to the central axis M. This can in particular be advantageous if the foil cartridge 10 is to be used in discharge systems which are suitable, for example, for getting into nooks and crannies.

The wall thickness of the outlet area 32 can also vary or be freely selected. In most embodiments, however, this is in a range between 0.5 and 1.5 mm.

In addition, it is also possible that the outlet area 32 or the outlet opening 16 for the storage or transport of the foil cartridges 10 is sealed with a membrane (not shown) which can then be pierced and pierced if required, for example by attaching an outlet nozzle so that it opens.

10 also shows that the head part 14 can have at least one alignment element 36 which, in the embodiment shown, is an arrow formed on the web area 22 . Fittingly, the support sleeve 100 also has an alignment member 110, which in this case is also a molded arrow. Thus, a user can clearly see how the head portion 14 is to be oriented with respect to the support sleeve 100 by aligning the alignment element 36 with the alignment member 110 .

In principle, it is also possible for both the alignment element 36 and the alignment member 110 to be designed in some other way, as long as they allow the head part 14 to be easily adjusted relative to the support sleeve. In addition, it may also be possible that both the head part 14 and the support sleeve 100 have more than one alignment element 36 or alignment member 110 and/or that they are each arranged at a different location on the head part 14 or on the support sleeve.

The appropriate number or position of the alignment element 36 or of the direction member 110 can therefore vary as required.

Sections are shown in FIG. 11 which show the connection of the head part 14 to the support sleeve 100 . In the embodiment shown, the head part 14 or the support sleeve 100 not only has an alignment element 36 or an alignment member 110 for this purpose, but also an alignment projection 38 or an alignment recess 112, which are designed to ensure correct alignment of the head part 14 relative to it to the support sleeve or to act in addition to the alignment element 36 or the alignment member 110 .

That is, to align head portion 14 relative to support sleeve 100 , alignment projection 38 and alignment recess 112 may be positioned such that alignment projection 38 may engage alignment recess 112 .

It is therefore fundamentally also possible that only alignment projection 38 and alignment recess 112 are provided, ie without alignment element 36 and alignment member 110. Equally, however, all four components for aligning head part 14 relative to the support sleeve can also be provided.

In addition, it can also be provided that--as shown in FIG. 11--the alignment recess 112 additionally has a folding projection 114 which is arranged such that the head part 14 is fixed in the circumferential direction relative to the support sleeve 100 with correct alignment.

In Fig. 11 it can be clearly seen that the alignment projection 38 must slip over the retaining projection 114 when the head part 14 is connected to the support sleeve 100 in order to finally come to rest behind the retaining projection 114, so that the retaining projection 114 serves as a fixation. which prevents the head part 14 from being easily unscrewed from the support sleeve 100 again. This is then only possible with the exertion of a greater force, so that the provision of the retaining projection 114 can ensure a certain form of fixation.

12 and 19 also shows a piston 200 which is designed to discharge the contents of the film bag 12 from the outlet opening 16 of the head part 14 by pressing against the film bag 12 from behind along the longitudinal axis M. This is usually done by a discharge device 300 as shown, for example, in part in FIG.

The piston 200 can have a dome-shaped central part 202 and an annular projection 204 on the circumference.

The dome-shaped configuration of the piston 200 can ensure, for example, that almost the entire content of the film bag 12 can be emptied. For this purpose, the head part 14 can also be designed to fit complementarily, so that the middle part 202 of the piston 200 can engage in a matching dome-shaped head part 14, with the outlet opening 16 then being located in the region of the dome of the head part 14.

The annular projection 204 can be used to catch those parts of the foil bag 12 that have already been emptied, so that they do not get caught between the pistons 200 and support sleeve 100 can get caught or alternatively wrinkle in such a way that the entire contents of the foil bag cannot be emptied.

In addition, the annular projection 204 may also be that part of the piston 200 which abuts against a stop collar 118 of the support sleeve 100 when the foremost end of the support sleeve 100 is reached (see Figure 12 and description below).

The support sleeve 100, which is shown by way of example in FIGS. 13 to 17, will now be discussed further. The support sleeve 100 is formed in one piece in the embodiment shown, which enables a particularly simple and cost-effective loosening position.

In principle, however, it is also possible for the support sleeve 100 to consist of an inner sleeve and an outer sleeve, for example.

In addition, it would also be conceivable for the support sleeve 100 to be composed of several parts along the central axis M, which can be detachably connected to one another via connection points, for example in the form of screw, click or snap-in connections.

In an upper region of the support sleeve 100 there is an internal thread 102 which is complementary to the external thread 18 of the foil cartridge 10 . This therefore means that the internal thread 102 of the support sleeve 100 is designed as a multi-start, in particular double-start, thread.

Accordingly, the foil cartridge 10 can be accommodated in a receiving area 101 of the support sleeve 100 and screwed tightly to the internal thread 102 be so that the support sleeve 102 surrounds at least the entire film bag 12 as well as parts of the head part 14 protectively.

The head part 14 of the foil cartridge protrudes at least partially from the support sleeve, as can be seen clearly in the sectional view of FIG.

The front area 106 of the support sleeve can also have a larger diameter than the rest of the support sleeve 100, so that the head part 14 of the foil cartridge 10 has better space therein.

Overall, the film cartridge 100 is of essentially cylindrical design, so that its diameter along the central axis M hardly changes or does not change at all.

In principle, however, it would also be possible for the shape of the support sleeve 100 to be adapted to the shape of the film bag 12 and for the diameter to taper slightly downwards, for example accordingly.

At least one, in particular several, radial pins 108 are provided at a lower end of the support sleeve 100 . These are designed to work together with corresponding recesses of a discharge system (not shown) in order to fasten the support sleeve 100 together with the film cartridge 10 to the discharge system.

As shown in the figures, the radial pins 108 can, for example, be of cylindrical design. In other advantageous embodiments, they can also have a mushroom-shaped or round cross-section. The exact shape can be chosen to suit the application or fixation method. The support sleeve 100 can also have at least one ventilation hole 116, as can be seen for example in FIG. 12, where the support sleeve 100 even has two ventilation holes 116. The ventilation holes 116 are used to allow air that is between the film bag 12 and the support sleeve 100 to escape when the piston 200 presses the film bag 12 forward in the direction of the head part 14 .

In addition, the support sleeve 100 can have a stop collar 118 which is arranged in the area of the internal thread 102 and serves as a stop surface for the piston 200 . Such a stop collar 118 is shown in FIG. 12, for example.

To use the film cartridge 10, it is screwed onto the support sleeve 100 via its head part 14, so that the film bag 12 is received in the receiving area 101 of the support sleeve 100. This system is then fixed to a discharge system (not shown) via the radial pins 108 . Known te discharge systems usually include a piston 200 (see Fig. 12 and 19) which, when in use, presses against the foil bag 12 from behind in order to thereby compress the bag and subsequently empty it.

For this emptying process, a thread 34 can additionally be provided at the front of the outlet opening 16 or on the receiving area 32 of the head part 14, to which thread an outlet nozzle (not shown) can be fastened.

By providing a thread (external thread 18 or internal thread 102) for fastening the film cartridge 10 to the support sleeve 100, a simple and quick exchange of an empty film cartridge 10 can be guaranteed. In addition, it is also possible to exchange the film cartridge 10 without removing the support sleeve 100 from the discharge system, since the film cartridge 10 can be introduced into the receiving area 101 of the support sleeve from the front. In addition, a protective ring 206 can be provided, which can be attached to the support sleeve 100 in order to prevent accidental triggering of a trigger 302 of a discharge device 300 or in order to produce a constant triggering of the trigger 302 . For the latter function, the guard ring 206 may have one or more bulges 208, as will be described in more detail below.

This can be advantageous, for example, in the case of pneumatic discharge devices 300, as is shown schematically in FIG. Such Austragvorrich lines 300 usually include a trigger 302 to trigger a movement of the piston along the longitudinal axis M in the direction of the outlet opening 16 of the foil cartridge 10. The pressure that is built up in the pneumatic discharge device can thereby the piston 200, which is arranged in the support sleeve 100 net, press against the rear end of the film cartridge 10 so that the material in the film cartridge 10 is discharged from the outlet opening.

The movement of the piston 200 can be effected, for example, by pneumatic loading by attaching a compressed air hose (not shown) to the rear end of the discharge device 300, as a result of which the piston 200 can be loaded with compressed air. For this purpose, the compressed air hose is connected to an external pneumatic device (also not shown).

In order to prevent the trigger 302 from unintentionally triggering the material to be discharged, the protective ring 206 can be pushed under a lever 304 of the trigger 302 . Thus, the guard ring 206 can be placed between the lever 306 and the support sleeve 100 to thereby prevent the trigger 302 from firing the pneumatic device. On the other hand, in order to ensure a constant discharge of material by continuously releasing the trigger 302, the protective ring 206--as already mentioned above--can have one or more bulges 208, which are designed in such a way that the lever 306 of the trigger 302 is clamped underneath can be, in order to be held permanently in a triggering position.

For this purpose, the bulges 208 can also have different heights, which can correspond to different lever positions. In the pneumatic discharge devices 300 described above, different lever positions can correspond to different pressures, for example, which result in more or less material being discharged from the film cartridge 10 .

In addition, the protective ring 206 can also have a stabilizing projection 210, i.e. a support, with one or more legs 212, which is designed in such a way that it can hold the foil cartridge 10 in an at least horizontal, in particular slightly inclined, position relative to a storage surface when the Foil cartridge 10 is placed on the storage surface so that outlet opening 16 is aligned at least horizontally, in particular pointing slightly upwards, in order to prevent material from running out of foil cartridge 10 when discharge device 300 or foil cartridge 10 is straight is not in use.

The protective ring 206 can therefore have up to three different functions: stabilization of the foil cartridge 10 when not in use, constant triggering of the trigger 302 of a discharge device 300 and/or prevention of triggering of the trigger 302 of a discharge device 300. reference sign

Foil cartridge 10 middle part 202

Foil bag 12 ring projection 204

Head part 14 protective ring 206

Outlet port 16 bulge 208

External thread 18 support 210

Fold 20 leg 212

Bar area 22 longitudinal axis M

stop 24

bulge 26

stiffening ribs 28

wings 30

outlet area 32

Internal thread 34

Alignment element 36

alignment tab 38 support sleeve 100

Recording area 101

Internal thread 102

End surface 104 front area 106

Radial pins 108

Alignment member 110

Alignment notch 112 retaining tab 114

ventilation hole 116

Stop collar 118

Piston 200

Claims

Expectations

1. Foil cartridge that can be filled with at least one fluid, consisting of a foil bag (12) as the cartridge casing and a rigid head part (14), the head part (14) having at least one outlet opening (16) for emptying the fluid of the foil cartridge (10) and at least one External thread (18) for fastening the film cartridge (10) to a support sleeve (100), the film bag (12) being fixed to the head part (14) in the region of the external thread (18).

2. Foil cartridge according to claim 1, wherein the foil bag (12) is fixed on an outer side of the head part (14).

3. Foil cartridge according to claim 2, wherein the foil bag (12) is attached to the head part (14) in such a way that the foil bag (12) encloses the external thread (18) or rests in a form-fitting manner on the external thread (18).

4. Foil cartridge according to claim 1, wherein the foil bag (12) is fixed to an inside of the head part (14).

5. Foil cartridge according to one of the preceding claims, wherein the foil bag (12) is glued to the head part (14).

6. Foil cartridge according to one of the preceding claims 1 to 4, wherein the head part (14) is integrally formed on the foil bag (12).

7. film cartridge according to any one of the preceding claims, wherein the film bag (12) has at least one coating on an inside and/or on an outside.

8. Foil cartridge according to one of the preceding claims, wherein the foil bag (12) is formed from at least two, in particular several, layers, in particular an inner layer and an outer layer.

9. Foil cartridge according to claim 8, wherein the at least two layers are formed from different materials.

10. Foil cartridge according to claim 8 or 9, wherein the layers each have a thickness between 4 and 100 μm.

11. Foil cartridge according to one of claims 8 to 10, wherein the at least two layers have different thicknesses.

12. foil cartridge according to any one of claims 8 to 11, wherein at least one layer of the foil bag (12) contains aluminum.

13. Foil cartridge according to one of claims 8 to 12, wherein the at least two layers are connected to one another by at least one composite film.

14. Foil cartridge according to one of claims 8 to 13, wherein the foil bag (12) has a third layer which is arranged between the inner layer and the outer layer, and in particular the third layer has aluminum.

15. Foil cartridge according to one of claims 8 to 14, wherein the foil bag (12) has a further layer which is arranged in particular between the inner layer and the outer layer, which has ethylene-vinyl alcohol copolymer (EVOFI).

16. foil cartridge according to one of claims 8 to 15, wherein the outer layer of the foil bag (12) is made of the same material as the rigid head part (14).

17. Foil cartridge according to one of claims 8 to 16, wherein the inner layer of the foil bag (12) comprises a plastic, in particular a thermoplastic.

18. Foil cartridge according to one of claims 8 to 17, wherein the inner layer of the foil bag (12) has the same material as the rigid head part (14) and in particular wherein the inner layer and the outer layer of the foil bag (12) have the same material as the rigid head part (14) have.

19. A foil cartridge according to any one of claims 8 to 18, wherein the inner layer of the foil pouch (12) is made of the same material as a portion of the rigid head portion (14) associated with the foil pouch.

20. Foil cartridge according to one of claims 8 to 19, wherein the inner layer has a Shore D hardness between 40 and 99, in particular between 40 and 60.

21. Foil cartridge according to one of claims 8 to 20, wherein the inner layer of the foil bag (12) is made of polyethylene, polypropylene, polyamide, polyethylene terephthalate or polybutylene terephthalate.

22. Foil cartridge according to one of claims 8 to 21, wherein the outer layer of the foil bag (12) comprises a plastic, in particular a thermoplastic.

23. Foil cartridge according to one of claims 8 to 22, wherein the outer layer has a Shore D hardness between 40 and 99, in particular between 40 and 60.

24. Foil cartridge according to one of claims 8 to 23, wherein the outer layer of the foil bag (12) is made of polyethylene, polypropylene, polyamide, polyethylene terephthalate or polybutylene terephthalate.

25. Foil cartridge according to one of the preceding claims, wherein the rigid head part (14) comprises a plastic, in particular a thermoplastic.

26. Foil cartridge according to one of the preceding claims, wherein the rigid head part has a Shore D hardness between 40 and 99, in particular between 40 and 60.

27. Foil cartridge according to one of the preceding claims, wherein the rigid head part (14) is made of polyethylene, polypropylene, polyamide, polyethylene terephthalate or polybutylene terephthalate.

28. Foil cartridge according to one of the preceding claims, wherein the rigid head (14) is made of high density polyethylene (HDPE), high density polyethylene (HDPE) having a density in the range of 930 kg/m ³ to 970 kg/m ³ .

29. Foil cartridge according to one of the preceding claims, wherein the foil bag (12) is closed at a rear end removed from the rigid head part (14) by a welded seam.

30. Foil cartridge according to one of the preceding claims, wherein the foil bag (12) is closed by a clip at one of the rigid head part (14) remotely th rear end.

31. Foil cartridge according to one of the preceding claims, wherein the foil bag (12) is closed at a rear end remote from the rigid head part (14) by means of an adhesive.

32. Foil cartridge according to one of the preceding claims, wherein the foil bag (12) is rigid in the pulling direction.

33. Foil cartridge according to one of the preceding claims, wherein the foil bag (12) withstands a tensile load of 50N to 80N in the axial direction.

34. Foil cartridge according to one of the preceding claims, wherein the foil bag (12) has a puncture resistance of 10 N to 20 N.

35. Foil cartridge according to one of claims 8 to 34, wherein the inner layer has a greater thickness than the outer layer.

36. Foil cartridge according to one of claims 8 to 35, wherein the inner layer has a minimum thickness of 50 μm to 90 μm, in particular from 55 μm to 80 μm.

37. Foil cartridge according to one of the preceding claims, wherein the foil bag (12) has a total material thickness of between 80 μm and 150 μm and/or a total basis weight of between 100 g/m ² and 170 g/m ² .

38. Foil cartridge according to one of the preceding claims, wherein the foil bag (12) has a water vapor permeation of at most 0.3 g/(m ² xd), in particular at most 0.2 g/(m ² xd).

39. Foil cartridge according to one of the preceding claims, wherein the foil bag (12) has an oxygen permeation of at most 0.3 cm ³ /(m ² x bar xd), in particular at most 0.2 cm ³ /(m ² x bar xd). points.

40. Foil cartridge according to one of the preceding claims, wherein the foil bag (12) has a wall thickness of at least 60 μm

41. Foil cartridge according to one of claims 8 to 40, wherein each of the layers of the foil bag (12) has a thickness of at least 4 μm, in particular at least 5 μm.

42. Foil cartridge according to one of claims 8 to 41, wherein at least between two layers of the foil bag (12) an adhesion promoter is arranged, which connects the two layers to each other, in particular special where the two layers are made of different materials.

43. Foil cartridge according to claim 42, wherein the adhesion promoter has a layer thickness of 1 μm to 5 μm.

44. Foil cartridge according to one of the preceding claims, wherein the foil bag (12) has a substantially cylindrical outer shape and/or has a weld seam in the axial direction, in particular the weld seam is designed as a sealed edge seam or overlap seam.

45. Foil cartridge according to one of claims 8 to 44, wherein the outer layer of the foil bag (12) is connected over an area to an inner wall of the head part (14).

46. Foil cartridge according to one of the preceding claims, wherein the foil bag (12) has a volume in the range from 50 ml to 750 ml.

47. Foil cartridge according to one of the preceding claims, wherein the foil bag (12) has a volume in the range from 750 ml to 5000 ml, in particular 1000 ml, 1250 ml, 1500 ml, 2500 ml or 4000 ml.

48. Foil cartridge according to one of the preceding claims, wherein the head part (14) has one or more stiffening ribs (28) on a side facing away from the foil bag (12).

49. Foil cartridge according to claim 48, wherein the one or more stiffening ribs (28) are arranged in a circumferential direction.

50. Foil cartridge according to claim 48 or 49, wherein the plurality of stiffening ribs (28) starting from a central axis (M) of the foil cartridge (10) extend in the radial direction.

51. Foil cartridge according to one of the preceding claims, wherein the head part (14) is substantially dome-shaped, wherein in particular the stiffening ribs (28) are arranged on the dome (26).

52. Foil cartridge according to one of the preceding claims, wherein the head part (14) has at least one wing (30) which is arranged in particular on the dome (26).

53. Foil cartridge according to claim 52, wherein the wing (30) is larger than at least one of the one or more stiffening ribs (28).

The foil cartridge of claim 52 or 53, wherein the wing (30) has a flea that is larger than a flea of at least one of the one or more stiffening ribs (28).

55. Foil cartridge according to one of claims 52 to 54, wherein the wing (30) has at least essentially the same thickness, in particular exactly the same thickness as the one or more stiffening ribs (28).

56. Foil cartridge according to one of the preceding claims, wherein the head part (14) has a circumferentially arranged Stegbe region (22) which extends over a front end of the film bag (12) facing the head part (14).

57. Foil cartridge according to one of the preceding claims, wherein the head part (14) has at least one alignment element (36) which is designed to align the head part (14) with respect to a support sleeve (100).

58. Foil cartridge according to claim 57, wherein the alignment element (36) is provided radially on the outside of the head part (14).

59. Foil cartridge according to claim 57 or 58, wherein the alignment element (36) is arranged on the web area (22).

60. Foil cartridge according to one of claims 57 to 59, wherein the alignment element (36) is arranged in the region of at least one radial len stiffening rib (28).

61. Foil cartridge according to one of claims 57 to 59, wherein the alignment element (36) is arranged in the region of at least one wing gel (30), preferably between two wings (30).

62. Foil cartridge according to one of the preceding claims, wherein the head part (14) has at least one alignment projection (38) which is designed to align the head part (14) at a predetermined angle with respect to a support sleeve (100).

63. Foil cartridge according to claim 62, wherein the alignment projection (38) is arranged on a foil bag (12) to facing side of the head part (14).

64. Foil cartridge according to claim 62 or 63, wherein the alignment projection (38) is arranged on the land area (22).

65. Foil cartridge according to one of the preceding claims, wherein the outlet opening (16) of the head part (14) has a substantially constant cross section.

66. Foil cartridge according to one of the preceding claims, wherein the outlet opening (16) has an internal thread (34) to which an outlet nozzle can be attached.

67. Foil cartridge according to one of the preceding claims, wherein the outlet opening (16) has an external thread (34) to which an outlet nozzle can be attached.

68. Foil cartridge according to one of the preceding claims, wherein the outlet opening (16) in the filled state of the foil bag (12) is closed with a membrane which can be pierced in particular through the outlet clip.

69. Foil cartridge according to one of claims 51 to 68, wherein the outlet opening (16) is arranged on a side of the dome (26) of the head part (14) facing away from the foil bag (12).

70. Foil cartridge according to one of the preceding claims, wherein the head part (14) has an outlet area (32) in which the outlet opening (16) is formed and which extends along a central axis (M) of the foil cartridge (10).

71. Foil cartridge according to claim 70, wherein the outlet region (32) is essentially tubular and has a wall thickness of between 0.5 and 1.5 mm at least in regions.

72. Foil cartridge according to one of claims 70 or 71, wherein the outlet area (32) has a length between 5 mm and 40 mm, in particular between 20 and 30 mm.

73. Support sleeve for holding or supporting a foil cartridge according to one of the preceding claims, wherein the support sleeve (100) has an internal thread (102) which corresponds to the external thread (18) of the foil cartridge (10).

74. Support sleeve according to claim 73, wherein the support sleeve (100) is made of metal, in particular aluminum, and/or plastic.

75. Support sleeve according to claim 73 or 74, wherein the support sleeve (100) is formed in one piece.

76. Support sleeve according to claim 73 or 74, wherein the support sleeve (100) is constructed in several parts.

77. Support sleeve according to claim 76, wherein the support sleeve (100) has at least one, in particular several, connection points in order to connect the different parts of the support sleeve to one another.

78. Support sleeve according to claim 77, wherein the at least one connection point is designed as a thread, as a bayonet connection or as a click lock.

79. Support sleeve according to one of claims 73 to 78, wherein the support sleeve (100) comprises an inner inner sleeve and an outer sleeve.

80. Support sleeve according to claim 79, wherein the inner sleeve is arranged in a movable, in particular sliding, manner in the outer sleeve.

81. Support sleeve according to one of claims 73 to 80, wherein the internal thread (102) is a multi-start thread, in particular a two-start thread.

82. Support sleeve according to one of claims 73 to 81, further comprising at least one alignment member (110) which is adapted to align the support sleeve (100) with respect to the head part (14) at a predetermined angle.

83. Support sleeve according to claim 82, wherein the alignment member (110) is adapted to cooperate with an alignment element (36).

84. Support sleeve according to one of claims 73 to 83, further comprising an alignment recess (112) configured to align the support sleeve (100) at a predetermined angle to the head portion (14).

The support sleeve of claim 84, wherein the alignment recess (112) is configured to cooperate with the alignment projection (38) of the head portion (14).

The support sleeve of claim 84 or 85, wherein the alignment recess (112) further includes a retaining projection (114) configured to circumferentially fix the head portion (14) to the support sleeve (100).

87. Support sleeve according to one of claims 73 to 86, further comprising at least one ventilation hole (116) which is arranged in an area adjacent to the internal thread (102).

88. Support sleeve according to one of claims 73 to 87, wherein the support sleeve (100) comprises a stop collar (118) in the area of the internal thread (103), which is designed to provide a stop surface for a piston (200).

89. Support sleeve according to claim 88, wherein the stop collar (118) extends circumferentially around an inner surface of the support sleeve (100).

90. A cartridge system with at least one foil cartridge (10) according to one of the preceding claims 1 to 72, a support sleeve (100) according to one of claims 73 to 89 and a piston, wherein the piston (200) and the foil cartridge (10) in a receiving area (101) of the support sleeve se (100) are arranged and the film cartridge (10) is screwed to the internal thread (102) of the support sleeve (100) via its external thread (18), so that part of the support sleeve (100) forms part of the head part (14) of the Covers the foil cartridge (10), the support sleeve (100) comprising at least one radial pin (108) which is arranged on an end of the support sleeve (100) facing away from the head part (104) of the foil cartridge (10) in order to hold the support sleeve (100) to be attached to a discharge system.

91. The cartridge system according to claim 90, wherein the at least one radial pin (108) is mushroom-shaped.

92. The cartridge system according to claim 90 or 91, wherein the radial pin (108) is designed to cooperate with corresponding counter elements, in particular recesses, on the discharge system, so that the support sleeve (100) is attached, in particular detachably, to the discharge system.

93. A cartridge system according to any one of claims 90 to 92 further comprising a protective ring (206) which is adapted to be attached to the support sleeve (10).

94. The cartridge system according to claim 93, wherein the protective ring (206) is arranged to be axially movable on the support sleeve (10).

95. The cartridge system according to claim 93 or claim 94, wherein the protective ring (206) is arranged on the support sleeve (10) such that it can be rotated radially.

96. The cartridge system according to claim 93, wherein the protective ring (206) comprises at least one support (210) by means of which the support sleeve (10) can be held.

97. The cartridge system of claim 93, wherein the guard ring (206) has at least one bulge configured to cooperate with a trigger (302).

98. A cartridge system according to claim 97, wherein the guard ring (206) has a plurality of bulges, which in particular have different heights, the bulges (208) being adapted to cooperate with the trigger (302).

99. A cartridge system according to any one of claims 90 to 98, wherein the piston (200) has a peripheral annular projection (204) which is designed to take the compressed film bag (12) auf.

100. The cartridge system according to any one of claims 90 to 99, wherein the piston (200) further has a substantially dome-shaped middle part (202) which is designed to compress the film bag (12) in the direction of the head part (14).

101. Discharge device with a cartridge system according to one of Claims 90 to 101, further comprising a trigger (302) for triggering an axial movement of the piston (200) and a protective ring (206) which is designed to prevent the trigger (302 ) and/or to ensure a constant triggering of the trigger (302) and/or the discharge device (300) in an at least substantially horizontal position position to avoid spilling material when the trigger (302) is not engaged.