PORTION CAPSULE FOR PREPARING A DRINK

Description

State of the art

[0001] The present invention is based on a portion capsule for preparing a beverage with the aid of a beverage production machine, wherein the portion capsule has a base element with a cavity for receiving a beverage raw material and a capsule lid closing the cavity, wherein the base element comprises a capsule bottom, a circumferential flange and a capsule wall extending from the capsule bottom to the circumferential flange, wherein the capsule lid is fastened to the flange, wherein the portion capsule has a feature that is optically detectable in particular by a detector of the beverage production machine.

[0002] Such portion capsules are known from the prior art. For example, the publication WO 2016 / 186 488 A1 discloses such a portion capsule. This portion capsule is intended to be inserted into a brewing chamber, in which the portion capsule is perforated to introduce brewing liquid in the form of hot water under pressure into the cavity. The interaction between the introduced water and the beverage raw material, in particular roasted and ground coffee, creates a beverage that leaves the portion capsule through further perforations and enters a container.

[0003] For each portion capsule, there is usually a suitable beverage production machine optimized for preparing beverages based on the corresponding portion capsules. To prevent malfunctions, it has proven effective to equip such portion capsules with machine- and optically readable detectable features. This allows a check to be carried out before the brewing process begins to determine whether the inserted portion capsule is compatible with the machine. In addition, a suitable brewing program can be started for the beverage raw material contained in the portion capsule, if necessary.

[0004] From the publications WO2013 / 072239 A1, EP 3 023 362 B1, WO 2020 / 201 487 A1 and US 10,800,600 B2 it is known to print such optically detectable features in the form of barcodes or binary codes on the flange of the capsule. Disclosure of the invention

[0005] It is an object of the present invention to provide a portion capsule with an optically detectable feature (hereinafter also referred to simply as feature) of the type mentioned above, which represents an improvement over the solutions known from the cited prior art. In particular, the readout reliability when reading the detectable feature by the detector of the beverage production machine is to be increased, and the sensitivity of the detectable feature to damage (scratching) due to external forces during transport or storage of the portion capsules is to be reduced. Furthermore, the aim is to reduce the manufacturing costs, manufacturing time, and / or weight of the portion capsule.

[0006] The object of the present invention is achieved with a portion capsule according to claim 1.

[0007] Advantageous embodiments and further developments of the invention can be found in the dependent claims and the following description with reference to the drawings.

[0008] A portion capsule according to the invention for preparing a beverage with the aid of a beverage production machine is disclosed, wherein the portion capsule has a base element with a cavity for receiving a beverage raw material and a capsule lid closing the cavity, wherein the base element comprises a capsule bottom, a circumferential flange and a capsule wall extending from the capsule bottom to the circumferential flange, wherein the capsule lid is fastened to the flange, wherein the portion capsule has a feature that is optically detectable in particular by a detector of the beverage production machine and is arranged on a side of the flange facing away from the capsule lid, characterized in that the portion capsule has a further base element (12') which at least partially surrounds the base element.Advantageously, the additional base element (also referred to as the outer base element) can be designed as a shape- or structure-giving base part, while the base element (also referred to as the inner base element), which has the flange with the optically detectable feature, can be optimized with a view to a cost-effective manufacturing process. As a result, the optically detectable feature can be printed or implemented particularly cost-effectively. The inner base element can, for example, be designed to be significantly less dimensionally stable (at least in the area of ​​the capsule wall or the capsule base) than the outer base element or can optionally be optimized with a view to an additional function, such as aroma tightness. The fact that the capsule walls overlap enables simple assembly and fastening of the two base elements to one another.The following statements on preferred developments of this portion capsule also optionally apply to all other portion capsules disclosed in this description.

[0009] Preferably, the further base element (12') has a further cavity (20') in which the base element is partially arranged.

[0010] Preferably, the base element is arranged so far within the further cavity (20') that a further capsule wall (14') of the further base element (12') extends, in particular parallel to the capsule wall of the base element, up to the flange.

[0011] Preferably, the further base element (12') is designed without a flange.

[0012] Preferably, the material in the region of the capsule wall of the base element is softer, less stiff or thinner than in the region of the capsule wall (14') of the further base element (12').

[0013] Preferably, the material of the base element is designed to be more gas-impermeable than the material of the further base element (12').

[0014] Preferably, the base element and the further base element (12') are glued or welded to one another in the area of ​​the capsule walls.

[0015] Preferably, the base element and the further base element (12') are made of the same or different materials.

[0016] Preferably, the optically detectable feature is a machine-readable code, preferably a one-dimensional or multi-dimensional bit or barcode.

[0017] A further object of the present invention is the use of the above-mentioned portion capsules according to the invention for preparing a beverage with the aid of a beverage production machine.

[0018] The above statements on different portion capsules are of course also to be understood in combination with each other.

[0019] According to a preferred embodiment of the present invention, the base element is made in one piece from aluminum and / or plastic. The base element is preferably produced by cold or hot forming, in particular deep drawing. The design of the base element with a cavity is preferably created by thermoforming, for example deep drawing using negative pressure, positive pressure and / or a movable stamp. The base element is preferably designed as a deep-drawn aluminum part. Alternatively, it would also be conceivable for the base element to be made from polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) or polyethylene terephthalate (PET). Alternatively, the portion capsule is produced by injection molding, in particular using a single-component, multi-component or in-mold process.

[0020] The base element is preferably truncated cone-shaped, conical, cylindrical, spherical, hemispherical, elliptical, or partially elliptical. The base element is preferably rigid or semi-rigid. The cavity formed by the base element serves to accommodate raw beverage material, for example, roasted coffee granules, instant coffee, chocolate powder, tea blends, milk powder, and / or the like. The lidding film is, in particular, flat or nearly flat, at least immediately after the filled portion capsule has been closed by the lidding film. Any bulging of the lidding film over time due to outgassing of coffee powder does not result in the lidding film being non-flat within the meaning of the present invention, since this bulging typically only occurs some time after the portion capsule has been filled.

[0021] The lidding film preferably comprises an aluminum foil or a plastic-aluminum composite film or a plastic film or a multi-layer plastic film. It is conceivable for the portion capsule to be rotationally symmetrical about its longitudinal axis. The longitudinal axis thus forms a central axis of rotational symmetry, which runs centrally through the portion capsule and in particular substantially perpendicular to a main extension plane of the lidding film. The flange of the base element preferably runs at an angle of between 70 and 110 degrees, particularly preferably 80 to 100 degrees and most preferably substantially 90 degrees to the axis of rotational symmetry. The flange is in particular closed and circumferential. The free, outer end of the flange preferably has a bead, a flange or a so-called rolled edge to prevent injuries to the user from the sharp-edged end.

[0022] The single-serve capsule may contain one or more beverage substances. The one or more beverage substances may be a liquid, a syrup, a solid, a powder, coffee or cocoa grounds, tea leaves, or a combination thereof. The one or more beverage substances may be diluted or extracted in a beverage manufacturing machine and / or beverage system to produce a beverage.

[0023] The portion capsule may include any of the optically detectable features and / or elements described and / or depicted herein. Any of the features and / or elements described herein may be combined to produce a portion capsule. Any of the features and / or elements described herein may be duplicated to produce a portion capsule. Any of the features and / or elements described herein may be eliminated or omitted to produce a portion capsule. Any of the features disclosed herein may be rearranged on any of the elements or surfaces listed herein. For example, a feature or element indicated as being located on the flange of the portion capsule may also or instead be located on the lid or the base member.

[0024] The portion capsule may have a body or a base member. The body or base member may be a container or form one or more cavities in which the beverage substance and / or one or more elements are received and / or stored. The body or base member may have a side wall with rounded, curved, or hemispherical surfaces. The body or base member may have a side wall with straight, flat, or tapered surfaces. The body or base member may have a side wall with surfaces forming a hemisphere, a dome, a cone, or a truncated cone. The base member may have a bottom surface. The bottom surface may be rounded or hemispherical. The bottom surface may be generally flat or planar. The bottom surface may have one or more indentations.If the base has more than one recess, the two or more recesses may be concentric or nested within each other. The base surface may be angled or inclined relative to the side wall.

[0025] The portion capsule may have a flange. The flange and the base member may be made of one or more integral materials. The flange and the base member may be formed from one or more separate materials and then joined together by a joining process. For example, the flange and the base member may be joined using an adhesive, a gasket, or other suitable joining method. The flange may be made of the same material as the base member and / or the lid. The flange may be made of a different material than the base member and / or the lid. The flange may have an annular shape that extends at least partially around the entire circumference of the base member. However, in certain embodiments, the flange may extend only around a portion of the circumference of the base member.In some cases, the flange may consist of two or more tabs extending from the base member. The flange may extend or protrude outward from the base member or the sidewall of the base member. The flange may extend at an angle from the base member such that an angle between the top surface of the flange and the sidewall of the capsule is an acute angle (less than 90 degrees). The flange may extend at an angle from the base member such that an angle between the top of the flange and the sidewall of the capsule is an obtuse angle (less than 90 degrees). The flange may extend at an angle from the base member such that an angle between the top of the flange and the sidewall of the capsule is approximately a right angle (approximately 90 degrees).

[0026] The flange can be located on the top of the base element. The flange can be located on the bottom of the base element. The flange can be located in an area between the bottom surface and the bottom surface of the base element. The flange can be closer to the top than to the bottom of the base element, or vice versa.

[0027] The portion capsule may be provided with a lid (also called a capsule cap). The lid may close or seal the cavity or base element after the beverage ingredient has been added or introduced into the cavity. The lid may create an airtight or hermetic seal to preserve the freshness of the beverage ingredient.

[0028] The lid may not create an airtight or hermetic seal. The lid may create a seal such that air and moisture are prevented from entering and / or exiting the cavity or capsule. The lid may be attached to the portion capsule, the base member, the top of the base member, the bottom of the base member, the flange, the top of the flange, the bottom of the flange, or a combination thereof. The lid may be attached by gluing, welding, or any other suitable attachment method or device. The lid may be made of the same material as the base member and / or the flange. The lid may be made of a different material than the base member and / or the flange. The lid, the flange, and / or the base member may be made of one or more integral materials.The cover, flange, and / or base member may be made of one or more separate materials and then joined together using a joining process. For example, the cover, flange, and / or base member may be joined using an adhesive, a gasket, a welding process, or another suitable joining method.

[0029] The portion capsule, body or base member, flange, and / or lid may be made of a material suitable for making a beverage and / or for storing ingredients for making a beverage. The portion capsule, base member, flange, and / or lid may be made of a metal. The portion capsule, base member, flange, and / or lid may be made of a non-metal. The portion capsule, base member, flange, and / or lid may be made of a recycled material. The portion capsule, base member, flange, and / or lid may be made of a recyclable material. The portion capsule, base member, flange, and / or lid may be made of a biodegradable material. The portion capsule, base member, flange, and / or lid may be made of a paper material.The portion capsule, base member, flange, and / or lid may be made from a compostable material. The portion capsule, base member, flange, and / or lid may be made from a cellulosic material. The portion capsule, base member, flange, and / or lid may be made from a material containing polylactic acid. The portion capsule, base member, flange, and / or lid may be made from a material that resists deformation, dissolution, and collapse at temperatures up to at least 120°C or more or less. The portion capsule, base member, flange, and / or lid may be made from a material derived from corn. The portion capsule, base member, flange, and / or lid may be made from a plant-based material.The portion capsule, base member, flange, and / or lid may be made of a material that is free of polystyrene. The portion capsule, base member, flange, and / or lid may be made of a material that is food-safe. The portion capsule, base member, flange, and / or lid may be manufactured by injection molding, thermoforming, drawing, or the like. The base member, flange, and / or lid may be laminated. The portion capsule, base member, flange, and / or lid may be made of an electrically conductive material. The portion capsule, base member, flange, and / or lid may be made of an electrically non-conductive material. The portion capsule, base member, flange, and / or lid may be made of a woven material.The portion capsule, base member, flange, and / or lid may be made of a rubber material. The portion capsule, base member, flange, and / or lid may be made of a plastic material. The portion capsule, base member, flange, and / or lid may be made of aluminum. The portion capsule, base member, flange, and / or lid may be made of a material that is elastic or deformable. The base member, flange, and / or lid may be made of a deformable material that can withstand different liquid temperatures (hot and cold) and pressures without sustaining damage (i.e., without the base member, flange, and / or lid cracking or breaking in undesirable areas). The portion capsule, base member, flange, and / or lid may have a generally uniform wall thickness.The portion capsule, base element, flange, and / or lid may have different wall thicknesses. For example, the portion capsule, base element, flange, and / or lid may have thicker walls in certain areas to prevent destruction of the portion capsule during handling and / or use.

[0030] The portion capsule may include one or more capsule features. The one or more capsule features may be one or more projections, ridges, bumps, and / or convexities extending from or beyond the outer surface of the base member. The one or more capsule features may be one or more channels, grooves, depressions, valleys, or concavities extending or projecting from the outer surface into the base member. The one or more capsule features may extend around the entire circumference of the body or base member. The one or more capsule features may also extend around only a portion or region of the circumference of the body or base member. The one or more surface capsule features may extend continuously around the body or base member.The one or more encapsulating features may extend intermittently (beginning and ending) around the body or the base member. The one or more encapsulating features may be located only on the base member. The one or more encapsulating features may be located only on the lid. The one or more encapsulating features may be located only on the flange. The one or more encapsulating features may not be located on the body, the flange, the lid, or a combination thereof. The one or more encapsulating features may be located on the inner surface of the base member. The one or more encapsulating features may be located on the outer surface of the base member. The one or more encapsulating features may be located on the top surface of the flange, the bottom surface of the flange, the side surface of the flange, or a combination thereof.The one or more capsule features may be one or more rings that extend around all or part of the circumference of the portion capsule. The one or more features of the portion capsule may be diagonal or extend at a diagonal or angle relative to a central longitudinal axis of the portion capsule. The one or more capsule features may have irregular shapes, such as curls or swirls. The one or more capsule features may be vertically oriented (from the top to the bottom of the base member). The one or more capsule features may extend onto the flange (top, bottom, and / or side surface of the flange). The one or more capsule features may not extend onto the flange. The one or more capsule features may extend from the flange to the bottom surface of the base member.The one or more capsule features may extend from the flange toward the bottom surface of the base member, but may not extend to the bottom surface. The one or more capsule features may extend from the bottom surface of the base member to the top surface of the base member, but may not extend to the top surface. The spacing between adjacent capsule features may be uniform. In other words, the spacing between some or all of the capsule features may be substantially the same. The spacing between adjacent capsule features may be different. In other words, the spacing between some or all of the capsule features may be different. The one or more capsule features may have a zebra shape or a zebra print.

[0031] This may mean that the one or more capsule features extend along at least a portion (or all) of the body or the base member, the lid, and / or the flange. The one or more capsule features may fade or be less visible in certain areas while being more intense or more visible in other areas. For example, the visibility of the one or more capsule features may change. For example, the depth of a depression or groove may become shallower or deeper in certain areas of the base member, the lid, and / or the flange. For example, the height or projection of a rib or ridge may be greater or lesser in certain areas of the base member, the flange, and / or the lid than in other areas of the base member, the flange, and / or the lid.

[0032] The one or more encapsulating features may be located only on the outer surface of the sidewall or body. The one or more encapsulating features may be located only on the inner surface of the sidewall or body. The one or more encapsulating features may be located on both the inner and outer surfaces of the sidewall or body. The one or more encapsulating features located on the outer surface may correspond to the one or more encapsulating features located on the inner surface of the encapsulating body. For example, a groove on the outer surface of the encapsulating body may form a ridge or protrusion on the inner surface of the sidewall, or vice versa. For example, a groove on the top side of the flange or lid may form a ridge or protrusion on the bottom side of the flange or lid, or vice versa.

[0033] The one or more capsule features located on an interior surface of or within the cavity can serve to alter or interrupt the flow of liquid of the beverage into and / or through the base member. The one or more capsule features can serve to cause or create turbulent liquid flow into and / or through the capsule. The one or more capsule features can serve to cause or create laminar liquid flow into and / or through the capsule. The one or more capsule features can serve to create a vortex of liquid in and / or through the capsule. The one or more capsule features can cause liquid flowing into and through the capsule to move upwardly and / or downwardly to extract and / or dissolve the beverage ingredient in the capsule.

[0034] The portion capsule can be coated with an ink, with a material that gives the portion capsule a metallic appearance, which can be made from an ink or metallic flakes or metallic particles or pigments. The particles can be suspended or dispersed in an aqueous medium and then applied to the base member, the lid and / or the flange. It is possible for the particles or pigments to be incorporated into the plastic when the plastic is in a molten or softened state to provide the metallic. For example, an aluminum flake material can be added to the plastic to give it a unique appearance and / or to conceal manufacturing swirls or defects that may have occurred as a result of

[0035] The one or more capsule features may be integrally formed on the capsule body or the base, the lid, and / or the flange. The one or more capsule features may be added to the capsule body or the base, the lid, and / or the flange. The one or more capsule features may be printed or affixed to the capsule body or the base, the lid, and / or the flange. The one or more capsule features may be molded or manufactured from the same material as the capsule body, the flange, and / or the lid. The one or more capsule features may be molded or manufactured from a different material than the capsule body, the flange, and / or the lid. The one or more capsule features may be printed, embossed, etched, glued, or affixed to the capsule body, the flange, and / or the lid.

[0036] The one or more capsule features may be glued, welded, or otherwise attached to the capsule base.

[0037] The one or more capsule features may also be the one or more visually recognizable features. In this regard, the one or more capsule features may serve one or more purposes or functions disclosed herein. Alternatively, the one or more capsule features may only serve the function or purpose of a visually recognizable feature.

[0038] The portion capsule may include one or more optically detectable features. The one or more optically detectable features may be located on the portion capsule, the body or base member, the sidewall, the outer surface of the sidewall, the inner surface of the sidewall, the flange, the top of the flange, the bottom of the flange, the side surface of the flange, the lid, the top of the lid, the bottom of the lid, the side surface of the lid, or a combination thereof.

[0039] The one or more optically detectable features can be read, detected, recognized, and / or identified by one or more detectors of the beverage machine and / or the system. The one or more detectors can be one or more lasers, lights, light curtains, scanners, readers, eyes, cameras, barcode readers, bitcode readers, or a combination thereof. After the portion capsule is inserted into the beverage machine, the one or more detectors can be disposed above the portion capsule, below the portion capsule, adjacent to the portion capsule, or a combination thereof. The one or more detectors can include or be in electronic communication with one or more processors, memories, programs, hard drives, RAM, or other computer hardware and software.The one or more detectors may be operable to read, identify, and / or correlate the one or more optically detectable features with one or more stored references. One or more of the read optically detectable features may be stored on a hard drive, in memory, or in a cloud of the detector, the beverage machine, or both. The one or more detectors may be operable to read, identify, and / or correlate the one or more optically detectable features with one or more stored references to determine the type of portion capsule. For example, the one or more detectors may detect whether the portion capsule contains coffee, espresso, cocoa, alcoholic or non-alcoholic beverage ingredients, or machine cleaning ingredients.For example, the one or more detectors may detect whether the portion capsule requires warm, cold, or ambient water or another liquid (milk, juice, etc.) to produce the desired beverage. For example, the detector(s) may determine the machine parameters for producing the desired or intended beverage, such as the liquid temperature, liquid pressure, liquid quantity, heating or cooling time and / or temperature, whether additional ingredients or liquids need to be mixed with the beverage, or whether they need to pass through the portion capsule. The one or more detectors may be capable of identifying the machine parameters for cleaning the beverage machine if the detector detects that the capsule is intended for machine cleaning.The one or more detectors may be operable to detect an incompatible optically detectable feature when a portion capsule is inserted into the machine that is not intended for use in the machine. This may advantageously prevent an error from occurring, damage to the machine, and / or injury to an operator or bystander.

[0040] The one or more optically detectable features may be one or more of: colors, patterns, logos, barcodes (2-dimensional and / or 3-dimensional), bit codes, binary code, depressions, indentations, bumps, protrusions, bumps. The one or more optically detectable features may be visible to the human eye. The one or more optically detectable features may be invisible to the human eye. The one or more optically detectable features may include ridges, protrusions, bumps, nubs, spacers, barbs, openings, holes, depressions, grooves, and indentations. The one or more optically detectable features may be one or more of images, patterns, lines, or grooves. The one or more optically detectable features may be flat or one-dimensional. The one or more optically detectable features may be three-dimensional.

[0041] The beverage machine may include one or more detectors. The one or more detectors may be electrically connected (wired or wirelessly) to a system network. The one or more detectors may transmit information about the use of the portion capsule in the machine to the system network. The information may be collected from one or more visually detectable features and / or the machine and then transmitted to a system network. The collected and transmitted information may assist a supplier or manufacturer of the portion capsules and / or machines, or a service technician, in identifying problems with the portion capsule and / or the machine.The information collected and transmitted can help a supplier or manufacturer of the portion control capsules and / or machines predict consumer habits, determine consumption, create orders, manage inventory, create a customer loyalty program, collect information about consumer preferences, generate and analyze data, and predict production, manufacturing, and shipping based on consumer consumption. The system network can be located anywhere in the world, including in the same state or country as the beverage machine and / or user, or in a different state or country.

[0042] The present teaching provides a method for recovering and / or composting a portion capsule, the lid, the filter, or a combination thereof. The method may comprise separating one or more elements (if present) from the portion capsule, separating the lid from the portion capsule, and composting one or more of the base elements and / or the lid. The method may comprise a step of composting the entire portion capsule, including the lid, the filter (if present), and / or the base.

[0043] Further details, features, and advantages of the portion capsule will become apparent from the drawings, as well as from the following description of preferred embodiments based on the drawings. The drawings merely illustrate exemplary embodiments of the portion capsule, which do not limit the essential concept of the invention. Short description of the drawings

[0044] Figure 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. Figure 3 shows a schematic detailed view of the ring element according to an exemplary embodiment of the present invention. Figure 4 shows a schematic view of the ring element according to another exemplary embodiment of the present invention. Figure 5 shows a schematic detailed view of the ring element according to the Figure 4 illustrated exemplary embodiment of the present invention. Figure 6 shows a further schematic detailed view of the ring element according to the Figure 4 illustrated exemplary embodiment of the present invention. Figure 7shows a schematic view of the portion capsule according to another exemplary embodiment of the present invention. Embodiments of the invention

[0045] In Figure 1 a schematic side view of a portion capsule 10 for preparing a beverage is disclosed.

[0046] The portion capsule 10 has a base element 12 (also referred to as the body). The body or base element 12 comprises a side wall 14 (also referred to as the capsule wall). The side wall 12 extends from a bottom region 22 (also referred to as the capsule bottom) to a circumferential flange 26, which projects laterally and is in particular circumferential. The base element 12 defines a cavity 20, which is provided for receiving beverage raw material. On the side facing away from the bottom region 22, the base element has a filling opening through which the cavity 20 can be filled with the beverage raw material.

[0047] The portion capsule 10 comprises, for example, a spherically shaped base element 12, which has the capsule base 22 (which can be curved and need not be flat) on its closed side and a circumferential flange 26 on its open side. The capsule wall 14 extends around the cavity 20 between the capsule base 22 and the flange 26. The portion capsule 10 is rotationally symmetrical about its central longitudinal axis. In the radial direction to the central axis of rotational symmetry, the flange 26, which is circular and thus circumferentially circumferential, protrudes outward beyond the capsule wall 14.

[0048] The flange 26 is firmly connected to a capsule lid 33 (also referred to as a lid), in the form of a particularly circular lid film, which closes the cavity 20 on the open side of the base element 12. For this purpose, the flange 26 preferably has a sealing plane facing the capsule lid 33, which extends approximately perpendicular to the axis of rotational symmetry. The capsule lid 33 is sealed, welded, or glued in its edge region to the flange 26 and, in particular, to the sealing plane.

[0049] The capsule lid 33 is preferably made of aluminum or plastic. Within the base element 12, the cavity 20 is formed, which is filled with the beverage raw material, for example, roasted coffee granules, instant coffee, chocolate powder, tea blend, milk powder, and / or the like (not illustrated for reasons of clarity) and which is closed by the capsule lid 33.

[0050] The spherical configuration of the base element 12 is preferably produced by thermoforming, for example, deep drawing using negative pressure, positive pressure, and / or a movable stamp. The base element 12 is preferably formed as a deep-drawn aluminum part. Alternatively, it would also be conceivable for the base element 12 to be made of plastic, such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), or polyethylene terephthalate (PET). Alternatively, the portion capsule 10 is manufactured by injection molding, in particular using a single-component, multi-component, or in-mold process. As a further alternative, it would be conceivable for the base element 12 to be made entirely or partially from a biodegradable material, in particular from cellulose fibers, which can be embedded in a resin matrix.

[0051] The portion capsule 12 is intended to be inserted into a brewing unit of a beverage production machine 14 to produce a beverage. The brewing unit comprises a first brewing chamber part and a second brewing chamber part, wherein the first or the second brewing chamber part is movable, in particular pivotable or displaceable, relative to the other brewing chamber part between an approximate position in which the first and the second brewing chamber parts form a closed brewing chamber, and an open position in which the first and the second brewing chamber parts are spaced apart from one another for inserting or ejecting the portion capsule 1.

[0052] In the closed position, the capsule lid 33 and / or the capsule base 22 are perforated to create perforation openings for introducing brewing liquid or for discharging the produced beverage. The brewing liquid is introduced into the cavity 20 under pressure. The interaction between the brewing liquid and the beverage raw material creates the desired beverage, which leaves the portion capsule 12 through the perforation openings and is fed into a beverage container. An optional filter medium can filter any particles of the beverage raw material from the beverage and retain them in the portion capsule 10. Preferably, however, the multi-perforated capsule lid 33 functions as the filter element.

[0053] The portion capsule 10 now has a feature 34 that is optically detectable, in particular by a detector of the beverage production machine. This feature 34 preferably serves to identify the portion capsule 10 in the beverage production machine. Thus, the beverage production machine can, for example, verify whether the portion capsule 10 located in the brewing chamber is a system-compatible portion capsule 10, and / or automatically select and start a suitable brewing program for the beverage raw material located in the portion capsule 10. It is also conceivable that specific brewing parameters to be used are embedded in the optically detectable feature 34 and read out by the detector.

[0054] The optically detectable feature 34 is in particular a machine-readable code, preferably a one-dimensional or multi-dimensional bit or barcode.

[0055] The flange 26 may have an upper surface 28 and an opposite lower surface 30. The upper surface 28 may face away from the base member 12. The lower surface 30 may face the base member 12. The flange 26 may have a side surface 32. The side surface 32 may extend between and connect the upper and lower surfaces 28, 30.

[0056] The cover 33 may be attached or mounted to the base member 12, the side wall 14, the flange 26, the top surface 28 of the flange 26, the side surface 32 of the flange 26, the bottom surface of the flange 26, or a combination thereof.

[0057] The portion capsule 10 may include one or more optically detectable features 34. The one or more optically detectable features 34 (schematically represented by dashed boxes) may be located on the body or base member 12, the sidewall 14, the outer surface 16, the flange 26, the top surface 28 of the flange 26, the bottom surface 30 of the flange, the side surface 34 of the flange 26, the lid 33, or a combination thereof. The one or more optically detectable features 34 may be one or more of the optically detectable features disclosed herein. The one or more optically detectable features 34 may be the same as the one or more capsule features 36 disclosed herein. The one or more optically detectable features 34 may be different from the one or more capsule features 36 disclosed herein.

[0058] The above to Figure 1 The explanations given apply in particular to all variants of the portion capsule 10 described below and are only used for reasons of clarity in the more detailed description of the Figures 2 to 16 not repeated again each time.

[0059] In Figure 2 a schematic side view of a portion capsule 10 for preparing a beverage according to a first variant is disclosed.

[0060] In the first variant, the optically detectable feature 34 extends across the capsule wall 14 of the base element 12. The optically detectable feature 34 comprises a machine-readable code consisting of a plurality of lines, with all or at least several lines extending across the capsule wall 14. It is conceivable that the lines run at least partially parallel to one another and, in particular, have different thicknesses.

[0061] The lines are printed on the capsule wall 14 or formed as groove-shaped depressions in the capsule wall 14 (or protruding webs on the capsule wall 14).

[0062] The lines are partially curved in the area of ​​the capsule wall 14 and in particular are wave-shaped.

[0063] The body or base member 12 includes one or more capsule features 36. The one or more capsule features 36 may be one or more waves or have a wave shape. The one or more capsule features 36 may extend generally horizontally relative to a central longitudinal axis 38 of the portion capsule 10.

[0064] In Figure 3 a schematic side view of a portion capsule 10 for preparing a beverage according to a second variant is disclosed.

[0065] The second variant is essentially similar to the first variant, with the optically detectable feature 34 extending both over the capsule wall 14 and over the flange 26. The optically detectable feature 34 is again a machine-readable code composed of a plurality of lines, with all or at least several lines extending both over the capsule wall 14 and over the flange 26. It is conceivable that the lines run at least partially parallel to one another and, in particular, have different thicknesses.

[0066] The lines are partially curved and in particular wave-shaped in the region of the capsule wall 14 and, in the region of the flange 26, open into lines running straight and, in particular, radially to the central axis of rotational symmetry of the portion capsule 10 on a side (bottom side 30) of the flange 26 facing away from the capsule lid 33.

[0067] In the flange area 26, the lines thus form a one-dimensional bit or barcode.

[0068] The lines are printed on the capsule wall 14 and / or the flange 26 or are formed as groove-shaped depressions in the capsule wall 14 and / or the flange 26 (or protruding webs on the capsule wall 14 and / or the flange 26).

[0069] The body or base member 12 includes one or more capsule features 36. The one or more capsule features 36 may be one or more waves or have a wave shape. The one or more capsule features 36 may extend at an angle (i.e., diagonally) relative to a central longitudinal axis 38 of the portion capsule 10. These features may also, or instead, be disposed on the lid 33 and / or the flange 26.

[0070] In Figure 4a schematic side view of a portion capsule 10 for preparing a beverage according to a third variant is disclosed.

[0071] The third variant is particularly similar to the one in Figure 3 The only difference is that the lines in the area of ​​the capsule wall 14 are not wavy but straight. In particular, the lines run at an angle to the main extension plane of the capsule lid 33.

[0072] The body or base member 12 includes one or more capsule features 36. The one or more capsule features 36 may extend at an angle (i.e., diagonally) relative to a central longitudinal axis 38 of the portion capsule 10. The spacing between adjacent capsule features 36 may be generally the same. The spacing between adjacent capsule features 36 may vary. For example, the spacing 40 between certain capsule features 36 may be greater or more pronounced than the spacing 42 between certain other capsule features 36. These features may also, or instead, be located on the lid 33 and / or the flange 26.

[0073] In Figure 5 a schematic side view of a portion capsule 10 for preparing a beverage according to a fourth variant is disclosed.

[0074] The fourth variant is particularly similar to the one in Figure 2The only difference is that the lines in the area of ​​the capsule wall 14 are not wavy but straight. In particular, the lines run parallel to the main extension plane of the capsule lid 33 and thus perpendicular to the central axis of rotational symmetry of the portion capsule 10.

[0075] The body or base member 12 includes one or more capsule features 36. The one or more capsule features 36 may extend at an angle (i.e., horizontally, generally perpendicularly) relative to a central longitudinal axis 38 of the portion capsule 10. The spacing between adjacent capsule features 36 may be generally the same. The spacing between adjacent capsule features 36 may be different. For example, the spacing 40 between certain capsule features 36 may be greater or greater than the spacing 42 between certain other capsule features 36. These features may also, or instead, be located on the lid 33 and / or the flange 26.

[0076] In Figure 6C a schematic view (view of the side of the portion capsule 10 facing away from the lid film 33) of a portion capsule 10 for preparing a beverage according to a fifth variant is disclosed.

[0077] The optical detectable feature 34, 36 is arranged on a separate ring 44 (shown in Figure 6B ), which is connected to the base element 12 (shown in Figure 6A ). The ring 44 is applied in particular to the side of the flange 26 facing away from the capsule lid 33 (underside 30).

[0078] Fig. 6A shows a part of the capsule 10, more precisely the bottom surface 30 of the base element. Fig. 6Bshows a capsule feature 36 that may include one or more visually detectable features 34. The capsule feature 36 may be a ring 44. The ring 44 may be an O-ring or other element that serves the additional function of forming a seal between the single-serve capsule 10 and the beverage machine to prevent water or liquid from leaking between the capsule 10 and the machine. The ring 44 may be made of the same or a different material as the bottom, flange, and / or lid. The ring 44 may have an opening sized to slide over the bottom surface 22 of the body or base member 12. However, the opening of the ring 44 may be smaller than the flange 26 so that the ring 44 can be placed against the bottom surface 30 of the flange 26.

[0079] As in Fig. 6CAs shown, after the ring 44 is placed on the capsule 10, the one or more visually detectable features 34 of the ring 44 are visible from a bottom and / or side of the capsule 10 or the flange. The ring 44 may be attached (glued, bonded, welded, etc.) to the capsule 10 or the flange 26. Alternatively, the ring 44 may be free of any fastening elements between the ring 44 and the capsule 10 and / or the flange 26.

[0080] In Figure 7C a schematic view (view of the side of the portion capsule 10 facing away from the lid film 33) of a portion capsule 10 for preparing a beverage according to a sixth variant is disclosed.

[0081] The flange 26 is provided with recesses 37 (also referred to as cutouts), which serve to form the optically detectable feature 34, 36. The recesses 37 form webs 38 (or web-like, flat projections) on the flange 26, which extend in the radial direction relative to the central axis of rotational symmetry of the portion capsule 10.

[0082] The recesses 37 extend parallel to the axis of rotational symmetry, preferably completely through the flange 26, and are covered by the circular capsule lid 33. The capsule lid 33, on its side facing the flange 26, has, in particular, a different color than the flange 26 on its side facing away from the capsule lid 33. A view of the underside 30 of the flange 26 thus produces a contrasting image of webs and recesses through which the capsule lid 33 shines through.

[0083] The capsule lid 33, together with the recesses 37, thus forms a relief-like, machine-readable code, preferably a one-dimensional bit or barcode. Alternatively, it is conceivable that the recesses 37, parallel to the axis of rotational symmetry, do not extend through the entire flange 26 and are only introduced into the side facing away from the capsule lid 33 (underside 30). The optically detectable feature 34, 36 thus comprises a relief introduced into the underside 30, which represents the machine-readable code, preferably a one-dimensional bit or barcode. The optically detectable feature 34, 36 is thus formed as a three-dimensional structure in the flange 26. It therefore preferably comprises a plurality of depressions 37 and elevations 38, which are designed in particular in the form of grooves 37 and projections 38 that run radially to the central axis of rotational symmetry of the portion capsule.

[0084] It is conceivable that the three-dimensional structure is formed during the manufacture of the base element 12, in particular during a deep-drawing process for producing the base element 12. Furthermore, the three-dimensional structure could be embossed, punched, or engraved into the flange 26. Alternatively, it would also be conceivable for the three-dimensional structure to be formed in the form of a conductor structure made up of recesses 37 and non-recesses 38, which is incorporated into the flange 26.

[0085] A further alternative is that the optically detectable features 34, 36 in the form of the recesses 37 are not introduced into the flange 26 of the base element 12 but into a ring 44. The ring is in Figure 7B and is mounted on the flange 26 of the base element 12 (shown in Figure 7A), for example, by adhesive bonding. The ring 44 has a conductor structure consisting of recesses 37 and non-recesses 38, which represent the code as described above. It is conceivable that the non-recesses 38 are connected to one another in a ring shape only on their radially inner side.

[0086] After the connection of the ring 44 with the base element 12, the Figure 7B The ring 44 shown can be referred to as the second flange area, while the one shown in Figure 7A The flange 26 shown, which has no recesses 37, is to be referred to as the first flange region. The first flange region preferably has a different color on its side facing the second flange region than the second flange region on its side facing away from the first flange region.

[0087] Figure 7Ashows a part of the capsule 10, more specifically the underside 30 of the base element. The underside 30 of the flange 26 can have a color (e.g., black, white, blue, red, green, etc.). Figure 7B shows a capsule feature 36, which may be a ring 44. The ring 44 may have open areas like rungs of a ladder. The ring 44 may have a color that is different from the color of the underside 30 of the flange 26. As can be seen from Fig. 7C As can be seen, after mounting the ring 44 on the capsule 10, the one or more optically detectable features 34 of the ring 44 cooperate with the colored bottom surface 30 of the flange to produce an optically detectable feature 34 that can be read or identified by a detector.

[0088] In Figure 8 a schematic side view of a portion capsule 10 for preparing a beverage according to a seventh variant is disclosed.

[0089] In Figure 8A sectional view (section in the radial direction relative to the central axis of rotational symmetry of the portion capsule 10) of the flange 26 is shown in detail. The optically detectable feature 34, 36 is formed by projections 46 and recesses 48, which - as described above - can be introduced into the flange 26 by deep drawing, punching, pressing, injection molding, or other methods.

[0090] Fig. 8 shows a capsule feature 36 and / or optically recognizable features 34. The features 36, 34 are a series of projections 46 and depressions 48 or peaks and valleys extending from the bottom surface 30 of the flange 26. The projections 46 and depressions 48 may be mounted on a ring, as described above in the Fig. 6A-7Cdescribed. The projections 46 and recesses 48 can be glued to the flange 26. The projections 46 and recesses 48 can be formed integrally with the flange 26. The optically detectable features 34, and in particular the projections 46 and recesses 48, or peaks and valleys, form an optically detectable feature 34 that can be read or identified by a detector.

[0091] In Figure 9A a schematic sectional view (section in the radial direction relative to the central rotational symmetry axis of the portion capsule 10) of a portion capsule 10 for preparing a beverage according to an eighth variant is disclosed.

[0092] The eighth variant is characterized in that the portion capsule again has a feature 34 that is optically detectable, in particular by a detector of the beverage production machine. However, the portion capsule 10 has a circumferential lip 50 (also referred to as a wing) protruding from the base element 12, and the optically detectable feature 34 is arranged on the lip 50. The optically detectable feature 34, 36 is arranged in particular on a side of the lip 50 facing away from the flange 26.

[0093] The lip 50 itself and / or the connection of the lip 50 to the base element 12 is preferably designed to be flexible or movable in such a way that the side of the lip 50 (facing the flange 26) can be placed against the underside 30 of the flange 26 in the brewing chamber of the beverage production machine (this situation is shown in Figure 9B illustrated). The underside 30 is the side of the flange 26 facing away from the capsule lid 33.

[0094] It is conceivable that the lip 50 is a sealing element which is made in particular of an elastically or plastically deformable material and thus improves the seal between the brewing chamber element and the flange 26.

[0095] The lip 50 is particularly annular and is attached circumferentially to the capsule wall 14. Alternatively, the lip 50 is attached to the underside 30 of the flange 26. It would also be conceivable for the lip 50 to be attached to the outer edge of the flange 26 or the underside 30, which is located radially outward.

[0096] Optionally, the lip 50 is attached to the base element 12 in a transition area from the capsule wall 14 to the flange 26. It is conceivable that the attachment of the lip 50 to the base element 12 functions as a hinge.

[0097] In the Figure 9AIn the illustrated initial position, the lip 50 is oriented at an angle of 25 to 65 degrees, preferably 35 to 55 degrees and particularly preferably substantially 45 degrees to a main extension direction of the flange 26.

[0098] The optically detectable feature 34 located on the lip 50 is, for example, a machine-readable code, preferably a one-dimensional or multi-dimensional bit or barcode.

[0099] In Fig. 9Athe portion capsule 10 is shown. The portion capsule 10 includes one or more capsule features 36. The capsule feature 36 may be a lip or wing 50 or a separate element on the body or base member 12. The lip or wing 50 may be attached to the capsule body 12 or formed integrally with the base member 12. The lip or wing 50 may be a ring that fits over the body or base member. The lip or wing may extend around the entire circumference of the base member or only a portion of the circumference. The lip or wing 50 may be or include a visually detectable feature 34, 36. The visually detectable feature 34, 36 may face the sidewall 14 or the bottom surface 30 of the base member 12 and face away from the bottom surface 30 of the flange 26.However, in some configurations, the optically detectable feature 34, 36 may also or instead be directed away from the sidewall 14 or the bottom surface 30 of the base member 12 and toward the bottom surface 30 of the flange 26. As shown in FIG. Fig. 9B As can be seen, after the capsule 10 is inserted into a beverage machine 10, the lip or wing 50 may deform or fold up against the flange 26 and become wedged between the flange 26 and the capsule holder of the beverage machine 100. The optically detectable feature 34, 36 can be read or identified by a detector. The detector can be arranged above, below, or to the side of the capsule.

[0100] In Figure 10 a schematic top view (view of the side of the portion capsule 10 facing away from the lid film 33) of a portion capsule 10 for preparing a beverage according to a ninth variant is disclosed.

[0101] In the ninth variant, the optically detectable feature 34, 36, i.e. in particular the machine-readable code, extends only over a partial segment of the underside 30 of the circular flange 26 and thus in particular not over the entire circumference of the flange 26.

[0102] Fig. 10shows a portion capsule 10 comprising a base element 12 and a flange 26. The bottom surface 30 of the flange 26 includes one or more encapsulating features 36 and / or optically detectable features 34. The one or more encapsulating features 36 and / or optically detectable features 34 do not extend around the entire circumference of the flange 26 or the base member 12. Instead, the one or more encapsulating features 36 and / or optically detectable features 34 are arranged only along a portion thereof, e.g., along an arc of 10 degrees or less, an arc of 20 degrees or less, an arc of 30 degrees or less, an arc of 45 degrees or less, an arc of 60 degrees or less, an arc of 90 degrees or less, an arc of 120 degrees or less, an arc of 180 degrees or less, an arc of 270 degrees or less, or an arc of less than 360 degrees.

[0103] In Figure 11a schematic top view (view of the side of the portion capsule 10 facing away from the lid film 33) of a portion capsule 10 for preparing a beverage according to a tenth variant is disclosed.

[0104] Similar to the ninth variant, in the tenth variant the optically detectable feature 34, 36, i.e. in particular the machine-readable code, also extends only over a partial segment of the underside 30 of the circular flange 26 and thus in particular not over the entire circumference of the flange 26.

[0105] Fig. 11 is similar to Fig. 10. The portion capsule 10 has two discrete sections with capsule features 36 and / or optically detectable features 34. The area between the capsule features 36 and / or optically detectable features 34 may be free of any capsule features 36 and / or optically detectable features 34. There may be any number of these discrete or partial sections of capsule features 36 and / or optically detectable features 34 (two or more, three or more, four or more, etc.). These partial sections may be formed directly on the underside 30 of the flange 26 or applied thereto in a subsequent printing or application process, or even like a ring, as above in the Fig. 6B, 7B described.

[0106] In Figure 12Ca schematic top view (view of the lower side (capsule base 22) of the portion capsule 10 facing away from the lid film 33) of a portion capsule 10 for preparing a beverage according to an eleventh variant is disclosed.

[0107] The eleventh variant is characterized in that the flange 26 is at least partially optically transparent and the optically detectable feature 34 is arranged in the region of the optically transparent flange 26.

[0108] The optically detectable feature 34, 36 is arranged in particular on a side of the flange 26 facing the capsule lid 33 or on a side of the capsule lid 33 facing the flange 26 or on an additional element (in particular a ring 44) arranged between the capsule lid 33 and the flange 33.

[0109] In all three cases, the optically detectable feature 34 is detectable through the optically transparent flange 26. At the same time, the optically detectable feature 34, 36 is protected from external environmental influences. The base element 12 can, in particular, be designed to be almost completely optically transparent.

[0110] Alternatively, it would also be conceivable for the base element 12 to be constructed in two parts, comprising a base part and a flange part, with only the flange part being optically transparent, with the base part and the flange part being connected to one another.

[0111] In Figure 12B The capsule lid 33 is depicted, with the underside 52 of the capsule lid 33 facing the base element 12 being visible. In this variant, the optically detectable feature 34, 36 is arranged in the edge region of this underside 52, preferably printed.

[0112] The optically detectable feature 34, 36 here comprises a machine-readable code, preferably a one-dimensional or multi-dimensional bit or barcode.

[0113] In Figure 12A The base element 12 is illustrated, which is either completely transparent or merely has a transparent flange 26. To form the transparent base element 12, the base element 12 is made in particular from a transparent plastic, for example a transparent film.

[0114] Fig. 12A shows a body or base element 12 and a flange 26 of the portion capsule. The base element 12 and / or the flange 26 may be at least partially transparent, translucent, see-through, or a combination thereof. Fig. 12BA lid 33 is shown. The lid comprises a top surface and an opposite bottom surface 52. The lid 33, and in particular the bottom surface 52 of the lid 33, has one or more encapsulating features 36 and / or optically recognizable features 34. Fig. 12Bshows the assembled portion capsule 10 viewed from the underside of the body or base member 12. The underside 52 of the lid 33 is positioned to face the top surface 28 of the flange 26 such that, when the portion capsule 10 is viewed from below, the one or more capsule features 36 and / or optically detectable features 34 are visible through the at least partially transparent, translucent, or see-through flange 26 or the underside 30 of the flange 26. Accordingly, the one or more capsule features 36 and / or optically detectable features 34 would be protected from liquid splashes or splashes and / or damage during manufacturing, shipping, and / or handling.

[0115] In Figure 13 a schematic sectional view of a portion capsule 10 for preparing a beverage according to a twelfth variant is disclosed.

[0116] The twelfth variant is distinguished from the other variants in particular in that the portion capsule 12 has a further base element 12' (also referred to as outer base element 12'), which at least partially surrounds the base element 12 (also referred to as inner base element 12). The further base element 12' has, in particular, a further cavity 20', in which the base element 12 is partially arranged. The base element (12) is preferably arranged so far within the further cavity 20' that a further capsule wall 14' of the further base element 12' extends, in particular parallel to the capsule wall 14 of the base element 12, up to the flange (26).

[0117] The further base element 12' is preferably designed without a flange so that the flange 26 of the inner base element 12 is not covered and thus the optically detectable feature 34, 36 arranged on the underside 30 of the flange 26 can be read and the field of view is not obscured.

[0118] Advantageously, the further base element 12' can be designed as a shaping or structuring base part, while only the inner base element 12, which has the flange 26 with the optically detectable feature 34, 36, can be optimized with a view to a favorable manufacturing process.

[0119] Preferably, the material in the region of the capsule wall 14 of the inner base element 12 is softer, less stiff or thinner than in the region of the capsule wall 14' of the outer base element 12'.

[0120] It is also conceivable that the material of the inner base element 12 is more gas-impermeable than the material of the outer base element 12'.

[0121] The inner base element 12 and the outer base element 12' are preferably glued, pressed or welded together in the area of ​​the capsule walls 14.

[0122] The inner base element 12 and the outer base element 12' can be made of the same or different materials.

[0123] In Fig. 13A portion capsule 10 is shown. The portion capsule 10 has a body or base member 12 and an outer body or base member 12'. The outer body or base member 12' may be substantially the same as the body or base member 12, so that all comments regarding the base member 12 also apply to the outer base member 12'. The base member 12 is sized to fit within the outer base member 12'. The base member 12 has a flange 26, and the outer base member 12' is free of a flange. The two base members 12, 12' may be joined together by an interference fit or by a fastener or attachment method (welding, gluing, etc.). Each of the surfaces of the base member 12 and / or the base member 12' may include one or more of the capsule features 36 and / or visually detectable features 34 disclosed herein.

[0124] In Figures 14, 15 and 16schematic side views of portion capsules 10 for preparing a beverage according to a thirteenth, fourteenth and fifteenth variant are disclosed.

[0125] In these three variants, the optically detectable features 34, 36 are designed in the form of three-dimensional structures of the capsule wall 14. In the thirteenth variant, the structure comprises spherical shapes, in the fourteenth variant, diamond shapes, and in the fifteenth variant, circumferential projections.

[0126] Figures 14, 15 and 16 show a single-dose capsule 10. The single-dose capsule 10 comprises a body or base member 12, a flange 26 and a lid 33. The body or base member 12, the sidewall 14 (inner and / or outer surfaces), the flange 26, the lid 33 or a combination thereof have one or more capsule features 36 and / or optically detectable features 34. In Fig. 14The one or more capsule features 36 and / or optically detectable features 34 may be dimples, elevations, depressions, or notches. The one or more capsule features 36 and / or optically detectable features 34 may resemble the dimples of a golf ball. Fig. 15 the one or more capsule features 36 and / or optically detectable features 34 may consist of a plurality of diamonds, rhombuses, triangular or square flat surfaces. In Fig. 16 the one or more capsule features 36 and / or the optically detectable features 34 may be one or more grooves, steps, ribs, or rings. In Fig. 16 the one or more capsule features 36 and / or the optically detectable features 34 may be one or more spirals, arcs, or curved features.

Claims

1. Portion capsule (10) for preparing a beverage with the aid of a beverage production machine, wherein the portion capsule (10) has a base element (12) with a cavity (20) for receiving a raw beverage material and a capsule lid (33) closing the cavity (20), wherein the base element (12) comprises a capsule base (22), a circumferential flange (26) and a capsule wall (14) extending from the capsule base (22) to the circumferential flange (26), wherein the capsule lid (33) is attached to the flange (26), wherein the portion capsule (10) has a feature (34) which can be optically detected, in particular by a detector of the beverage production machine, and which is arranged on a side of the flange (26) facing away from the capsule lid (33), characterised in that the portion capsule (10) has a further base element (12') which at least partially surrounds the base element (12).

2. portion capsule (10) according to claim 1, wherein the further base element (12') has a further cavity (20') in which the base element (12) is partially arranged.

3. portion capsule (10) according to claim 2, wherein the base element (12) is arranged so far inside the further cavity (20') that a further capsule wall (14') of the further base element (12') extends in particular parallel to the capsule wall (14) of the base element (12) as far as the flange (26).

4. portion capsule (10) according to one of the preceding claims, wherein the further base element (12') is formed without a flange.

5. portion capsule (10) according to one of the preceding claims, wherein the material in the region of the capsule wall (14) of the base element (12) is softer, less rigid or thinner than in the region of the capsule wall (14') of the further base element (12').

6. portion capsule (10) according to one of the preceding claims, wherein the material of the base element (12) is designed to be more impermeable to gas than the material of the further base element (12').

7. portion capsule (10) according to one of the preceding claims, wherein the base element (12) and the further base element (12') are glued or welded together over a large area in the region of the capsule walls (14).

8. portion capsule (10) according to one of the preceding claims, wherein the base element (12) and the further base element (12') are made of the same or different materials.

9. portion capsule (10) according to one of the preceding claims, wherein the optically detectable feature (34) is a machine-readable code, preferably a one-dimensional or multidimensional bit or bar code.

10. use of a portion capsule (10) according to one of the preceding claims for the preparation of a beverage by means of a beverage making machine.