WO2018211147A1

WO2018211147A1 - Portion capsule for preparing a drink in a drinks production machine, and method for producing a portion capsule

Info

Publication number: WO2018211147A1
Application number: PCT/EP2018/063396
Authority: WO
Inventors: Marc KRÜGER; Günter EMPL
Original assignee: K-Fee System Gmbh
Priority date: 2017-05-19
Filing date: 2018-05-22
Publication date: 2018-11-22
Also published as: US20200180858A1; EP3625151A1; CA3064157A1; AU2018268112A1

Abstract

The invention relates to a portion capsule for preparing a drink in a drinks production machine, wherein the portion capsule has a base element with a cavity for receiving a raw drink material and a capsule cover closing the cavity, wherein the capsule cover is secured to a circumferential flange of the base element, wherein a sealing element is provided on an underside of the flange facing away from the capsule cover, characterised in that the sealing element is provided as a circumferential separate ring element. The invention also relates to a method for producing a portion capsule according to the invention.

Description

DESCRIPTION Title Portion capsule for preparing a beverage in a beverage manufacturing machine and method for making a portion capsule

The present invention is based on a portion capsule for the preparation of a beverage in a beverage production machine, the portion capsule having a base element with a cavity for receiving a beverage raw material and a capsule lid closing the cavity, the capsule lid being attached to a circumferential flange of the base element , wherein on a side facing away from the capsule underside of the flange, a sealing element is provided.

Such portion capsules are known in the art. For example, the publications DE 10 2012 223 291 A1, DE 10 2013 215 274 A1, DE 10 2012 109 186 A1 and DE 10 2012 105 282 A1 have portion capsules for portion capsule machines each having a rigid or semi-rigid base element which has a cavity for receiving a beverage raw material, as coffee roast granules, instant coffee, chocolate powder, tea mixture, milk powder or the like encloses, wherein the cavity is closed after filling the portion capsule with a capsule lid. So that the beverage raw material does not lose its aroma during storage and during transport of the portion capsule, the base element is gas and liquid-tight. For the preparation of a coffee beverage, the portion capsule is introduced into a brewing chamber of a preparation device. Before, after or during the introduction of the portion capsule into the brewing chamber, the portion capsule is preferably opened on its bottom side, and after the brewing chamber has been sealed, the filling side of the portion capsule sealed with a closing foil is pierced by piercing means. Subsequently, preparation liquid, preferably hot water, is conveyed under pressure into the portion capsule. The preparation liquid flows through the beverage substrate and extracts and / or dissolves the substances required for the beverage production from the beverage substrate.

The base element must withstand the production of the drink comparatively high mechanical forces, since the extraction liquid under high pressure and high temperature is introduced into the cavity to produce the beverage in interaction with the beverage raw material. A disadvantage of portion capsules known from the prior art in this case is that liquid passes past the base element in the brewing chamber and this contaminated or even damaged.

Disclosure of the invention

It is an object of the present invention to provide a portion capsule of the type mentioned above, which effectively prevents the penetration of extraction liquid from a region below the portion capsule into the brewing chamber.

The object of the present invention is achieved with a portion capsule for the preparation of a beverage in a beverage production machine, wherein the portion capsule comprises a base member having a cavity for receiving a beverage raw material and the hollow space occlusive capsule lid, wherein the capsule lid attached to a peripheral flange of the base member is, wherein on a side facing away from the capsule underside of the flange, a sealing element is provided, characterized in that the sealing element is provided as a revolving separate ring element. The portion capsule according to the invention has the advantage over the prior art that the penetration of extraction liquid into the brewing chamber of the beverage production machine is effectively prevented. The designed as a circumferential separate ring element sealing element seals the portion capsule against the brewing chamber effectively. In particular, when the brewing chamber is closed, the ring element is pressed by the brewing bell in the direction of the capsule edge. This creates a liquid-tight closure of the brewing chamber against a brewing chamber downwardly bounding bottom plate of the brewing chamber.

The portion capsule is preferably frusto-conical or cylindrical. In a preferred embodiment, the portion capsule, in particular the base element, on aluminum on. In an alternative embodiment, the portion capsule, in particular the base element, a plastic. The cavity formed by the base member serves to receive beverage raw material, for example coffee roast granules, instant coffee, chocolate powder, tea mixture, milk powder or the like. The ring element preferably has an inner and an outer radius, wherein the difference between the inner and outer radius is preferably greater than the height of the ring element. In a preferred embodiment form the height of the ring member is less than the wall thickness of the base member. Preferably, this embodiment is applied to a portion capsule whose base element is essentially made of plastic. The inner radius is preferably insignificantly larger than the outer radius of the base element in the region of the flange. The outer radius is preferably insignificantly smaller than the inner radius of the brewing chamber in the area in which the flange is located in the brewing chamber when the portion capsule is arranged. In an alternative embodiment, the outer radius is insignificantly greater than the outer radius of the flange. In particular, the dimensions of the ring element are selected so that the ring element when closing the brewing chamber seals this completely downwards. The ring element preferably works around when closing the brewing chamber. In the folded state, the ring element fulfills its sealing function. The ring element should not go beyond the flange in the folded state. Here, "up" and "down" are defined by the flow direction of the extraction liquid: the extraction liquid flows from top to bottom. The ring element is preferably designed such that the ring element is pressed when closing the brewing unit through the brewing bell in the direction of the flange and thus closes the brewing chamber relative to the bottom plate.

Advantageous embodiments and modifications of the invention are the dependent claims, as well as the description with reference to the drawings.

According to a preferred embodiment of the present invention, it is provided that the ring element comprises an elastic material. This advantageously provides a ring element which flexibly adapts to the dimensions of the brewing chamber. The ring element is preferably highly flexible and allows a dynamic seal with a connection to the capsule body, i. the base element and / or the flange, which supports the mobility in the direction of the outer edge of the flange. In particular, it is thus advantageously possible that the ring element occupies a sealing position when closing the brewing bell. In particular, the ring element is pressed when closing the brewing bell in the direction of the flange and preferably pressed into an edge of the flange. In a preferred embodiment, the ring element comprises a plastic, in particular a soft plastic. In a further preferred embodiment, the ring element has a rubber. Preferably, the elastic material is water impermeable.

According to a preferred embodiment of the present invention, it is provided that an inner portion of the ring element is connected to the base element and / or the flange. that is. As a result, a dense, in particular liquid-tight, closure between ring element and base element and / or ring element and flange is advantageously produced. In particular, the ring element is positively and non-positively connected to the base element and / or the flange. The connection to the capsule body, ie base element and / or flange takes place in such a way that the mobility in the direction of the capsule edge, ie towards the outside, is supported. As a result, the flexibility of the ring element in an outer portion, in particular a portion in the region of the outer diameter of the ring member is maintained. This advantageously allows a dynamic sealing of the brewing chamber relative to the bottom plate of the brewing chamber by the ring element. For the purposes of the present invention, the inner subregion preferably comprises a circumferential region which comprises at least the inner radius of the ring element. In a preferred embodiment, the connection of the ring element with the base element and / or the flange is achieved by means of frictional engagement. In an alternative preferred embodiment, the ring element is connected directly in the production process with the base member and / or the flange. In particular, the ring element is chemically connected to the base element and / or the flange. Preferably, ring element and base element and / or ring element and flange are designed as a component. This advantageously eliminates a separate manufacturing step in which the base element or the flange would first have to be provided with the ring. By the embodiment of ring element and base element and / or ring element and flange as a component, a firm and reliable connection between the ring element and the base element and / or ring element and flange is achieved. In an alternative embodiment, the ring member is sealed to the base member and / or the flange. In particular, the sealing takes place by means of welding, preferably ultrasonic welding. Additionally or alternatively, the ring element, in particular an inner portion of the ring element, be engaged on the base member. For this purpose, the base element, in particular in a lower region of the base element assigned to the flange, has a fastening device into which the ring element, in particular the inner part region of the ring element, engages. Preferably, the fastening device is formed by a circumferential groove on the outer wall of the base member. It is also conceivable that two parallel projections are arranged on the outer wall of the base member, and the ring member is engaged in the space formed between the two projections.

According to a preferred embodiment of the present invention, it is provided that the flange has a peripheral thickening, in particular a collar, and the annular element is inserted into a space formed by the wall of the base element and the thickening. is legible. The inserted into the space formed ring member so advantageously forms a sealing ring between brewing bell and portion capsule, in particular the flange of the portion capsule, with closed brewing chamber. In particular, when closing the brewing chamber, the ring element is pressed by the brewing bell into the space formed by the wall of the base element and the thickening of the flange.

According to a preferred embodiment of the present invention, it is provided that the flange has a circumferential thickening, in particular a collar, and the ring element can at least partially enclose the thickening. In this way, a ring element is advantageously provided, which can form when closing the brewing chamber by a pressure exerted by the brewing bell pressure around the thickening.

According to a preferred embodiment of the present invention, it is provided that an upper side of the ring element remote from the flange and / or a lower side of the ring element facing the flange have reinforcements. This advantageously ensures that the closing force of the brewing chamber is not overstressed. In particular, the areas formed between the reinforcements can yield to a fluid pressure without compromising the sealing effect of the ring element. In particular, swim skin areas are formed between the reinforcements that can absorb pressure. The reinforcements ensure that the ring element in its entirety

Pressure does not give way. The reinforcements are preferably designed as thickened contours. Preferably, the reinforcements are circumferentially interconnected.

According to a preferred embodiment of the present invention, it is provided that an upper side of the ring element remote from the flange and / or a lower side of the ring element facing the flange has a coating. As a result, the sealing process is additionally advantageously supported. In particular, the upper side and / or the lower side have a soft surface coating, preferably with silicone. According to a preferred embodiment of the present invention it is provided that the ring element is glued to the base member and / or the flange. In particular, the inner portion of the ring member is bonded to the base member and / or the flange. This ensures a secure and stable connection between the ring element, in particular the inner portion of the ring element, and the base element and / or the flange. According to a preferred embodiment of the present invention, it is provided that a silicone layer is arranged between the ring element and the base element and / or between the ring element and the flange. In particular, the inner portion of the ring member is bonded to the base member and / or the flange by means of the silicone layer. As a result, a simple, cost-effective, hygienic and liquid-tight bonding of ring element to the base element and / or the flange is advantageously achieved.

According to a preferred embodiment of the present invention, it is provided that the portion capsule has a fastening device for receiving the ring element on an underside of the flange facing away from the capsule cover, the ring element being latched into the fastening device. In particular, an inner portion of the ring element is engaged in the fastening device. This advantageously provides a further embodiment for connecting the ring element to the base element or the flange of the base element. In particular, the ring element can be easily and quickly connected non-positively to the flange by means of the fastening device. In a preferred embodiment, the ring element has a base, which engages in the fastening device. The fastening device can be formed, for example, by a space formed between the wall of the base element and a peripheral thickening, for example of the flange.

According to a preferred embodiment of the present invention, it is provided that an inner portion of the ring member is connected to an upper side of the flange facing the capsule lid and / or with an underside of the capsule cover or circumferentially with the flange such that an outer portion of the ring member on the Capsule cover facing away bottom of the flange can be arranged. In particular, the outer portion is formed as a circumferential wing, which lays on closing the brewing chamber around the flange and thus acts as a sealing element. When removing the portion capsule formed as a circumferential wing portion acts due to the restoring forces advantageous as a removal aid. The inner portion is formed as a ring. This is advantageous

Sealing element provided that can be easily and quickly applied from below, ie from the capsule lid side on the base member. In a preferred embodiment, the inner portion of the ring member between capsule cover and flange is arranged. Alternatively, the inner portion is circumferentially arranged on the flange. In a further, alternative embodiment, the inner portion is on the upper side remote from the flange arranged the capsule lid. That is, the cavity of the base member is first closed with the capsule lid and only then applied the ring member.

According to a preferred embodiment of the present invention it is provided that the inner portion of the ring member has a fastening element. According to a preferred embodiment of the present invention it is provided that the flange has a receptacle for the fastening element. As a result, a solid and stable connection between the flange and ring element is advantageously made possible. The ring member is connected to the flange by the fastener is introduced into the receptacle. In a preferred embodiment, the receptacle is arranged on the capsule lid facing the top of the flange. In an alternative embodiment, the receptacle is arranged circumferentially on the outer edge of the flange.

According to a preferred embodiment of the present invention it is provided that the capsule lid has a receptacle for the fastening element. As a result, it is advantageously possible to connect the ring element stably and firmly exclusively or additionally to the capsule cover. In a preferred embodiment, the receptacle is arranged on the upper side of the capsule cover facing away from the flange. Thus, an attachment of the ring member at the top of the capsule lid, ie, when the base element is closed, possible borrowed. In an alternative, preferred embodiment, the receptacle is arranged on the upper side facing the flange of the capsule lid. As a result, an attachment of the ring element in the arrangement of the inner portion between the flange and capsule lid is possible. In particular, this attachment can replace the attachment to the flange or, alternatively, take place in addition to attachment to the flange. It is therefore conceivable for a first receptacle to be arranged on the upper side of the flange facing the capsule lid, and for a second receptacle to be arranged on the underside of the capsule lid facing the flange, so that the fastening element can be partially inserted into both receptacles. Thus, a particularly stable composite is achieved. According to a preferred embodiment of the present invention, it is provided that the fastening element has latching hooks. In particular, the latching hooks can be arranged circumferentially in the inner portion of the ring element. The latching hooks are preferably arranged equidistantly. In particular, the ring hooks are suitable to lock into a receptacle. It is conceivable that the latching hooks be designed in such a way that a first hook region engages in a first receptacle and a second hook region engages in a second receptacle. would take. Preferably, at least four Rasthäkchen, more preferably a larger, depending on the circumference of the portion capsule number of Rasthäkchen provided.

According to a preferred embodiment of the present invention, it is provided that the fastening element has a circumferential ring. As a result, a particularly easy to manufacture and low-wear fastener is provided. In particular, the inner portion of the ring member is formed as a thickened ring, preferably with a round cross-section. This is suitable to be introduced into a receptacle. According to a preferred embodiment of the present invention it is provided that the receptacle has a circumferential groove. The circumferential groove is particularly suitable for receiving a plurality of latching hooks or a ring. The circumferential groove is preferably arranged on the capsule lid facing the top of the flange. In an alternative embodiment, the groove is circumferentially arranged on the outer edge of the flange net. In a further alternative, preferred embodiment, the groove is arranged circumferentially on the underside facing the flange of the capsule lid.

According to a preferred embodiment of the present invention it is provided that the receptacle has a plurality of peripherally arranged recesses. In particular, the recesses are adapted to receive a catch hook. The recesses are preferably arranged equidistantly. The distances between the recesses are determined in particular by the distances between the latching hooks of the fastening element. The recesses are preferably arranged circumferentially on the capsule lid facing the top of the flange. In an alternative embodiment, the recesses are arranged circumferentially on the outer edge of the flange. In a further alternative, preferred embodiment, the recesses are arranged circumferentially on the underside facing the flange of the capsule lid.

A further subject of the present invention is a process for the preparation of a pod capsule according to any one of claims 1 to 7, wherein the portion capsule is produced in a forming process, in particular a thermoforming process, characterized in that the ring element is introduced by the folding process in the forming process. In an advantageous manner, a portion capsule with sealing element designed as a ring element is thus made available. In particular, the ring element is integrated as part of the portion capsule in the manufacturing process in this. As a result, additional process steps are saved. representation In addition, a safe, stable and dense, in particular liquid-tight, connection between the ring element and base element or flange is made possible by the manufacturing method according to the invention. An entry of extraction liquid into the brewing chamber past the portion capsule is thus effectively prevented. Preferably, the portion capsule is essentially made of aluminum.

Another object of the present invention is a method for producing a portion capsule according to one of claims 1 to 7, wherein the portion capsule is produced in a one-component injection molding process or in a multi-component injection molding process. As a result, the ring element can be designed as an integral part of the portion capsule. In particular, the ring element is integrated in the manufacturing process in the base element. In a preferred embodiment, the plastic portion capsule is produced by injection molding. In this case, ring element and base element are preferably designed as one component. In particular, the portion capsule comprising ring element and base element is produced in an injection molding tool. In an alternative embodiment, the ring element is produced in a first injection molding tool in a first method step, and in at least one second method step, the base element is produced in a second injection molding tool. In this case, the ring element can be introduced into the second injection molding tool and encapsulated and / or injection-molded in the second method step.

According to a preferred embodiment of the present invention, it is provided that the portion capsule is produced in an in-mold process. This advantageously provides a stable and permanent, tight connection between the ring element and the base element or

Flange guaranteed.

Another object of the present invention is a method for producing a portion capsule according to one of claims 1 to 10, wherein in a first step, the base element is provided, wherein in a second step, the ring member on a side facing away from the capsule lid bottom of the flange of the base member is arranged in a third process step, the ring member is connected to the base member and / or the flange. As a result, a method is advantageously provided which allows simple retrofitting of portion capsules with a sealing element. In particular, the ring element is non-positively and / or positively arranged on the underside of the flange. In this case, the ring element and the base element are preferably connected to each other at least by friction. The ring element is preferred in the second method step striped over the base member until an inner portion of the ring member comes into contact with the flange. In particular, in the third method step, an inner subregion of the ring element is connected to the base element and / or the flange. According to a preferred embodiment of the present invention, it is provided that the ring element is glued to the base element and / or the flange in the third method step. In particular, the inner portion of the ring member is glued to the base member and / or the flange. This advantageously improves the connection of the ring element to the base element and / or the flange beyond the frictional engagement. In particular, a chemical connection between ring element and base element or flange is produced. In a preferred embodiment, a silicone layer is arranged between the ring element and the base element and / or ring element and flange, by means of which the ring element is glued to the base element or the flange. According to a preferred embodiment of the present invention, it is provided that in the third method step, the ring element is latched into a fastening device arranged on an underside of the flange facing away from the capsule cover. In particular, the inner portion of the ring element is locked in the fastening device. As a result, in addition to the frictional engagement, the connection between ring element and base element and / or ring element and flange is improved. In particular, the ring element is held by mechanical forces on the flange.

According to a preferred embodiment, it is provided that the ring element is shrunk onto the base element and / or the flange in the third method step. In particular, the ring element is heated before it is applied to the base element and / or the flange. By cooling, the ring element contracts after application to the base member and / or the flange and thus obtains a tight fit on the base member and / or the flange. Another object of the invention is a method for producing a portion capsule according to any one of claims 1 1 to 18, wherein in a first process step, the base member is provided, wherein in a second step, the ring member is disposed on a capsule lid facing the top of the flange , In a third method step, the ring element is connected to the flange and in a fourth method step, the cavity of the base member is closed with the capsule lid. This advantageously provides a production method for a portion capsule, the sealing element of which can be brought from the capsule lid side onto the portion capsule. In particular, the ring element is clipped from the capsule lid side onto the base element, preferably in such a way that the outer portion of the ring element can be placed on the underside of the flange. In particular, the formed as a wing outer portion forms a seal of the brewing chamber, while the inner portion of the attachment of the ring member is used on the base member. Upon removal of the portion capsule from the brewing chamber, the outer portion acts as a removal aid due to the acting the restoring forces. Preferably, the ring element is sealed from the capsule lid side to the base element.

According to a preferred embodiment of the invention, it is provided that in the third method step, a fastening element of the ring element is introduced into a receptacle of the flange. As a result, the ring element is reversibly and stably connected to the flange. According to a preferred embodiment of the invention, it is provided that in the fourth method step, the ring element is connected to the capsule lid. As a result, an additional attachment of the ring element is made possible in particular. According to a preferred embodiment of the invention, it is provided that in the fourth method step, a fastening element of the ring element is introduced into a receptacle of the capsule lid. In this case, the fastening element can be partially introduced into the receptacle of the flange and partially into the receptacle of the capsule lid.

Another object of the invention is a method for producing a portion capsule according to any one of claims 1 1 to 18, wherein in a first process step, the base member is provided, wherein in a second process step, the ring member is circumferentially arranged on the flange, wherein a third step, the ring member is connected to the flange and in a fourth step, the cavity of the base member is closed with the capsule lid. In particular, the inner portion here also fulfills a sealing function. The capsule lid can be applied directly to the flange and connected to it.

According to a preferred embodiment of the invention, it is provided that in the third method step, a fastening element of the ring element is introduced into a receptacle of the flange. The fastening element is preferably introduced into a receptacle arranged on the outer edge of the flange, for example a groove or recesses arranged equidistantly. Another object of the invention is a method for producing a portion capsule according to one of claims 1 1 to 18, wherein in a first method step, the base member is provided and the cavity of the base member with the capsule lid is closed, wherein in a second process step the ring element on a the

Flange facing away from the top of the capsule lid is arranged and in a third process step, the ring member is connected to the capsule lid. This advantageously provides a production method for a portion capsule, the sealing element of which is brought onto the closed capsule. In particular, the cavity of the base element is first closed by means of the capsule cover and then the sealing element is clipped on.

This advantageously allows a direct connection between capsule cover and flange.

According to a preferred embodiment of the invention, it is provided that in the third method step, a fastening element of the ring element is introduced into a receptacle of the capsule cover. In particular, the receptacle of the capsule lid is arranged on the upper side of the capsule lid facing away from the flange. As a result, an attachment of the ring element on the capsule lid is made possible. Another object of the invention is a method according to any one of claims 26 to 33, wherein the ring member is shrunk onto the flange or flange and capsule lid. In particular, the ring element is heated before it is applied to the flange and / or the capsule lid. By cooling, the ring element contracts and thus receives a tight fit on the flange or flange and capsule lid. This can be done additionally or alternatively to the attachment by means of fastening element and recording.

Further details, features and advantages of the invention will become apparent from the drawings, as well as from the following description of preferred embodiments with reference to the drawings. The drawings illustrate only exemplary embodiments of the invention, which do not limit the essential inventive idea.

Brief description of the drawings

FIG. 1 shows a schematic sectional view of a portion capsule according to an exemplary embodiment of the present invention. Figure 2 shows a schematic view of the portion capsule according to another exemplary embodiment of the present invention.

FIG. 3 shows a schematic detail view of the ring element according to an exemplary embodiment of the present invention.

FIG. 4 shows a schematic view of the ring element according to another exemplary embodiment of the present invention.

FIG. 5 shows a schematic detail view of the ring element according to FIG. 4

illustrated exemplary embodiment of the present invention.

FIG. 6 shows a further schematic detail view of the ring element according to FIG

Figure 4 illustrated exemplary embodiment of the present invention.

FIG. 7 shows a schematic view of the portion capsule according to another exemplary embodiment of the present invention.

Embodiments of the invention

1 shows a schematic sectional view of a portion capsule 1 for preparing a beverage in a non-illustrated beverage production machine according to an exemplary embodiment of the present invention.

The portion capsule 1 has a cup-shaped base element 2 and a capsule cover 4 attached to a peripheral flange 7 of the base element 2. The capsule cover 4 is in particular welded to the flange 7. The capsule lid 4 is preferably designed as a lid foil, particularly preferably made of aluminum or plastic. Within the base element 2, a cavity 3 is formed, which is filled with beverage raw material (not illustrated for reasons of clarity) and which is closed by the capsule cover 4.

The cup-shaped configuration of the base element 2 is preferably by thermoforming, for example deep drawing by means of negative pressure, overpressure and / or a movable stamp, generated. The base element 2 is preferably formed as a deep-drawn plastic part of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) or polyethylene terephthalate (PET). In an alternative embodiment, the base element 2 is preferably formed as an aluminum part. Alternatively, the portion capsule 1 is produced by injection molding, in particular in the one-component, multi-component or in-mold process.

The portion capsule 1 is inserted into a brewing chamber in use in a beverage manufacturing machine. Subsequently, the capsule lid 4 and the bottom area are perforated successively or simultaneously and 4 introduced under the perforation openings in the capsule lid extraction traction fluid under pressure into the cavity 3. The interaction between the extraction liquid and the beverage raw material produces the desired beverage which leaves the portion capsule 1 through the perforation openings in the bottom region and is fed to a beverage container. By means of an optional filter medium, any particles of the beverage raw material can be filtered out of the beverage and retained in the portion capsule 1.

The portion capsule 1 according to the invention has a designed as a circumferential separate ring member 6 sealing element. This advantageously provides a portion capsule which protects a brewing chamber of the beverage production machine from penetration of an extraction liquid, for example during the beverage preparation process. In particular, the ring element 6 seals the brewing chamber with respect to a bottom plate of the brewing chamber downwards. The seal is preferably liquid-tight.

In a preferred embodiment, the portion capsule 1, in particular the base element 2 of the portion capsule 1, is provided with the ring element 6 directly in the production process. As a result, a stable and permanent connection between ring element 6 and base element 2 is advantageously produced. Additional process steps in which the ring element 6 is connected to the base element, advantageously eliminated. For example, in the molding process, in particular in the thermoforming process, of the base element 2, the ring element 6 is introduced by folding technology. Preferably, the base element 2 in this embodiment has aluminum, the portion capsule 1 is thus designed as an aluminum capsule. In an alternative embodiment, the portion capsule 1 is designed as an injection-molded capsule, is thus produced by injection molding. The ring element 6 can be advantageously carried out in one piece with the base part 2 either in the one-component method. Alternatively, the ring element 6 can be firmly and consistently connected to the base part in a multi-component or in-mold process. INS In particular, the ring element 6 is manufactured in a first method step and overmoulded or molded on in the second method step.

Preferably, the ring element 6 is designed as a flat ring. In particular, the height of the ring element 6 is less than the width of the ring element 6, ie the difference between the inner and outer radius of the ring element 6. In one embodiment of the portion capsule 1 as a plastic capsule, the ring member 6 has a height which is less than the wall thickness of the base element 2 is. Preferably, the ring element 6 is made of a flexible, in particular elastic, material. For example, the ring element 6 on plastic and / or rubber. The ring member 6 is connected in the manufacturing process of the portion capsule 1 with the base member 2, that the mobility of the ring member 2 in an outer portion of the ring member, in particular to the outer edge of the flange 7 is supported. In this way, a sealing element for a portion capsule is advantageously provided, which allows a dynamic sealing of the brewing chamber. The ring element 6 preferably has an inner subregion 5, for example an annular zone in the region of the inner radius of the ring element 6. The inner subregion 5 is formed, for example, by a ring which extends from the inner radius of the ring element 6 to a middle radius of the ring element 6 Ring element 6 is sufficient, wherein the average radius is greater than the inner and smaller than the outer radius of the ring member 6. But it is also conceivable that the inner portion 5 includes only corresponding ring segments. In a preferred embodiment, the ring element 6 is connected to the base member 2 at the inner portion 5. As a result, an outer portion of the ring member 6 remains flexible. In particular, the ring element 6, in particular its outer portion, can create on closing the brewing chamber to the flange 7 of the base element 2 and / or an inner wall of the brewing chamber. As a result, an efficient sealing of the brewing chamber is achieved. The connection of the ring element 6 with the base element 2 preferably takes place in a region of the base element 2 adjoining the flange 7. In particular, the ring element 6 is connected to a lower region of the base element 2 and / or to the flange 7, in particular in its region of abutment against the base element 2, connected. In this case, the ring element is preferably designed so that when closing the brewing chamber is pressed by a brewing bell of the brewing chamber on the flange 7 and the brewing chamber so completely seals against the bottom plate of the brewing chamber. In a preferred embodiment, the flange 7 has a circumferential thickening, in particular a collar. Preferably, the ring member 6 is designed so that it is pressed by the brewing bell in the space formed between the thickening and outer wall of the base member 2 when closing the brewing chamber. In an alternative embodiment, the ring element 6 is designed so that it at least partially reshapes the thickening when closing. The ring element 6 preferably has a, in particular soft, surface coating. The surface coating advantageously improves the sealing properties of the ring element 6. The ring element 6 is provided with a coating on an underside facing the flange 7 and / or on an upper side facing away from the flange 7. The coating preferably comprises silicone.

FIG. 2 shows a schematic view of the portion capsule 1 according to a further exemplary embodiment of the present invention. The portion capsule 1 shown in FIG. 2 differs from the portion capsule 1 of FIG. 1 in that the ring member 6 is applied only later and connected to the base element 2. In particular, in this embodiment, the portion capsule 1, for example, in a forming or injection molding process, manufactured and then provided with the ring member 6. As a result, a portion capsule 1 is advantageously provided, which can be retrofitted with a sealing element. In particular, the portion capsule 1 can be produced by known production methods and provided with the ring element 6 in a subsequent method step. The ring element 6 can have all the properties described in FIG. Preferably, the ring element 6, in particular an inner subregion 5 of the ring element 6, is glued to the base element 2. The bonding can take place by means of a silicone layer arranged between ring element 6 and base element 2 in the connection region. However, other adhesive methods are conceivable. Alternatively or additionally, the base element 2 has a fastening device into which the ring element 6 engages. As a result, a particularly simple and fast to reach connection between the base element 2 and ring element 6 is possible. In particular, the ring element 6 is connected directly to the base element 2 during attachment. Additional process steps, for example the application of an adhesive, are advantageously eliminated. But it is also conceivable that in addition a bonding of the ring member 6 takes place with the base member 2. The fastening device is preferably arranged on an underside of the flange 7 facing away from the capsule cover 4. In particular, the underside of the flange 7 facing away from the capsule lid 4 has a thickening which forms a space with the outer wall of the base element 2, into which the ring element 6, in particular its inner portion 5, can engage.

FIG. 3 shows a schematic detail view of the ring element 6 according to the embodiment of the present invention shown in FIG. The ring element 6 preferably has a base 10 which, together with the fastening device, produces a frictional connection between ring element 6 and base element 2. The base 10 is preferred designed to lock into the fastening device. For example, the fastening device is formed by the circumferential thickening of the flange 7. In particular, this thickening is arranged on an outer edge of the capsule lid 4 opposite underside of the flanges 7 and forms a collar there. The base 10 of the ring element 6 is preferably designed such that it engages in the space formed between the thickening and the outer wall of the base element. As a result, a simple, stable and fast connection between ring element 6 and base element 2 is advantageously made possible.

FIGS. 4 to 6 show a schematic view of the ring element 6 according to a further exemplary embodiment of the present invention. The ring element 6 preferably has a plurality of reinforcements 8. The reinforcements are arranged on an underside facing the flange 7 and / or on an upper side of the ring element 6 facing away from the flange 7. Areas formed between the reinforcements 8 form flotation skin regions 9, which can advantageously yield to a pressure of the extraction liquid, see FIG. 5. The flesh skin regions 9 advantageously absorb the pressure of the extraction liquid. The reinforcements 8 ensure that the ring element 6 as a whole does not yield to the pressure and remains in position despite the pressure absorbed by the skin regions 9. In particular, the reinforcements 8 ensure the sealing function of the ring element 6. It is ensured so advantageous that the closing force of the Brühkam- mer is not overstressed, but at the same time there is an effective seal of the brewing chamber against the bottom plate of the brewing chamber. Preferably, the reinforcements 8 are designed as circulating interconnected contours. These can be designed, for example, as cross-shaped reinforcements 8. The reinforcements themselves can have a substructure, see FIG. 6. In this way, the stability and bending properties of the ring element 6 can be optimally adapted to the parameters of the beverage production machine, for example maximum pressure in the brewing chamber and maximum volume of the extraction liquid.

FIG. 7 shows a schematic view of the portion capsule 1 according to a further exemplary embodiment of the present invention. The portion capsule 1 shown in FIG. 7 differs from the portion capsule 1 of FIG. 2 in that the ring element 6 is applied from the capsule lid side. The ring element 6 has, in particular, an outer portion 12, which is designed as a wing and, when the brewing chamber is closed, lies on the underside of the flange facing away from the capsule cover 4. The outer portion 12 thus acts as a sealing element during the brewing process. In the If the portion capsule 1 were removed from the brewing chamber, the outer portion 12 functions as a removal aid due to the acting restoring forces. The ring element 6 can be applied to the base element 2 before or after the closure of the cavity 3 of the base element 2. That is, either the cavity 3 is first closed by means of the capsule lid 4 and subsequently the ring element 6 is clipped onto the flange 7 and capsule cover 4 by means of the outer portion 12 or the ring element is clipped onto the flange 7 by means of the outer portion 12 and the cavity 3 subsequently closed by the capsule cover 4. The ring element 6 is preferably sealed to the flange 7 or flange 7 and the capsule lid 4. The ring element 6 is particularly preferably shrunk onto the flange 7 or flange 7 and the capsule lid 4. That is, the ring member 6 is prior to application to flange 7 and on

Flange 7 and capsule cover 4 heated. As a result of the following cooling, the ring element 6 contracts and thus receives a firm seat on flange 7 or flange 7 and capsule cover 4. In a preferred embodiment, the inner subregion 5 has a fastening element 11. The fastening element 1 1 is designed for example as a ring. The fastening element 1 1 cooperates with a receptacle 13. In particular, the fastening element 1 1 in a receptacle 13 can be introduced. The receptacle 13 is preferably arranged on the capsule cover 4 facing top of the flanges 7. Alternatively or additionally, the receptacle 13 is arranged on the underside of the capsule cover 4 facing the flange 7. It is also alternatively conceivable that the receptacle 13 is arranged circumferentially on the outer edge of the flanges 7. The receptacle 13 is designed for example as a circumferential groove into which the fastening element 1 1 can be introduced. Hereby, the ring member 6 is firmly and reversibly attached to the flange 7 and / or the capsule cover 4.

LIST OF REFERENCE NUMBERS

1 portion capsule

2 base element

3 cavity

4 capsule lid

5 Inner section

6 ring element

7 flange

8 reinforcement

9 swim skin area

10 basis

1 1 fastener

12 Outer section

13 recording

Claims

A portion capsule (1) for preparing a beverage in a beverage manufacturing machine, the portion capsule (1) comprising a base member (2) having a cavity (3) for receiving a beverage raw material and a capsule lid (4) closing the cavity (3) the capsule cover (4) is fastened to a circumferential flange (7) of the base element (2), wherein a sealing element is provided on an underside of the flange (7) remote from the capsule cover (4), characterized in that the sealing element is designed as a circulating separate ring element (6) is provided.

Second portion capsule (1) according to claim 1, wherein the ring element (6) comprises an elastic material.

3. portion capsule (1) according to claim 1 or 2, wherein an inner portion (5) of the ring element (6) with the base element (2) and / or the flange (7) is connected.

4. portion capsule (1) according to any one of the preceding claims, wherein the flange (7) has a circumferential thickening, in particular a collar, and insert the ring element (6) in a space formed by the wall of the base element (2) and the thickening bar is.

5. portion capsule (1) according to one of claims 1 to 3, wherein the flange (7) has a circumferential thickening, in particular a collar, and the ring element (6) can at least partially enclose the thickening.

6. portion capsule (1) according to any one of the preceding claims, wherein the flange (7) facing away from the top of the ring member (6) and / or the flange (7) facing bottom of the ring member (6) have reinforcements.

7. portion capsule (1) according to any one of the preceding claims, wherein the flange (7) facing away from the top of the ring member (6) and / or the flange (7) facing bottom of the ring member (6) has a coating.

8. portion capsule (1) according to any one of the preceding claims, wherein the ring element (6) with the base element (2) and / or the flange (7) is glued.

9. portion capsule (1) according to any one of the preceding claims, wherein between the ring member (6) and the base member (2) and / or between the ring member (6) and the flange (7) is arranged a silicone layer.

10. portion capsule (1) according to any one of the preceding claims, wherein the portion capsule (1) on a side facing away from the capsule cover (4) underside of the flange (7) has a fastening device for receiving the ring element (6), wherein the ring element (6) in the fastening device is locked.

1 1. Portion capsule (1) according to one of claims 1 to 2, wherein an inner portion (5) of the ring element (6) with the capsule cover (4) facing the top of the flange (7) and / or with an underside of the capsule cover (4) or circumferentially with the flange (7) is connected such that an outer portion (12) of the ring member (6) on the capsule cover (4) facing away from the underside of the flange (7) can be arranged.

12. portion capsule (1) according to claim 1 1, wherein the inner portion (5) of the ring member (6) has a fastening element (1 1).

13. portion capsule (1) according to claim 12, wherein the flange (7) has a receptacle (13) for the fastening element (1 1).

14. portion capsule (1) according to any one of claims 12 to 13, wherein the capsule cover (4) has a receptacle (13) for the fastening element (1 1).

15. portion capsule (1) according to any one of claims 12 to 14, wherein the fastening element (1 1) has a catch hook.

16. portion capsule (1) according to any one of claims 12 to 14, wherein the fastening element (1 1) has a circumferential ring.

17. portion capsule (1) according to any one of claims 13 to 16, wherein the receptacle (13) has a circumferential groove.

18. portion capsule (1) according to any one of claims 13 to 15, wherein the receptacle (13) has a plurality of circumferentially arranged recesses.

A process for producing a portion capsule (1) according to one of claims 1 to 7, wherein the portion capsule (1) is produced in a forming process, in particular a thermoforming process, characterized in that the ring element (6) is introduced by means of folding technology in the forming process becomes.

A process for producing a portion capsule (1) according to any one of the preceding claims 1 to 7, wherein the portion capsule (1) is produced in a one-component injection molding process or in a multi-component injection molding process

, Process for producing a portion capsule (1) according to one of the preceding claims 1 to 7, wherein the portion capsule (1) is produced in an in-mold process.

, Method for producing a portion capsule (1) according to one of claims 1 to 10, wherein in a first method step, the base element (2) is provided, wherein in a second method step, the ring element (6) on a capsule cover (4) facing away from underside the flange (7) of the base element (2) is arranged and in a third method step, the ring element (6) with the base element (2) and / or the flange (7) is connected.

23. The method according to claim 22, wherein the ring element (6) in the third method step with the base element (2) and / or the flange (7) is glued.

24. The method according to claim 22, wherein the ring element (6) in the third method step in a on one of the capsule cover (4) facing away from the bottom of the flange (7) arranged fastening device is engaged.

25. The method according to claim 22, wherein the ring element (6) in the third step on the base element (2) and / or the flange (7) is shrunk.

26. A method for producing a portion capsule (1) according to any one of claims 1 1 to 18, wherein in a first method step, the base element (2) is provided, wherein in a second method step the ring element (6) is arranged on an upper side of the flange (7) facing the capsule cover (4), wherein in a third method step the ring element (6) is connected to the flange (7) and in a fourth method step the cavity (3) of the base element (2) is closed with the capsule cover (4).

27. The method according to claim 26, wherein in the third method step, a fastening element (1 1) of the ring element (6) is introduced into a receptacle of the flange (7).

Method according to one of claims 26 to 27, wherein in the fourth method step, the Rin gelement (6) with the capsule cover (4) is connected.

A method according to claim 28, wherein in the fourth method step, a fastening element (1 1) of the ring element (6) is introduced into a receptacle of the capsule cover (4).

Method for producing a portion capsule (1) according to one of Claims 1 1 to 18, wherein in a first method step the base element (2) is made available, wherein in a second method step the ring element (6) is arranged circumferentially on the flange (7) , In a third method step, the ring element (6) is connected to the flange (7) and in a fourth method step, the cavity (3) of the base element (2) with the capsule cover (4) is closed.

The method of claim 30, wherein in the third method step, a fastening element (1 1) of the ring element (6) is introduced into a receptacle of the flange (7).

Method for producing a portion capsule (1) according to one of Claims 1 1 to 18, wherein in a first method step the base element (2) is made available and the cavity (3) of the base element (2) is closed with the capsule cover (4) In a second method step, the ring element (6) is arranged on an upper side of the capsule cover (4) facing away from the flange (7) and in a third method step the ring element (6) is connected to the capsule cover (4).

33. The method of claim 32, wherein in the third method step, a fastening element (1 1) of the ring element (6) in a receptacle (13) of the capsule cover (4) is introduced. Method according to one of claims 26 to 33, wherein the ring element (6) on the flange (7) or on the flange (7) and capsule cover (4) is shrunk.