AT517145A2 - A capsule, a system for preparing a drinkable beverage from such a capsule and use of such a capsule in a beverage preparation device - Google Patents

Abstract

A capsule containing a substance for the preparation of a drinkable beverage, the capsule comprises an aluminum capsule body having a sidewall and an outwardly extending flange and a sealing member on the outwardly extending flange for fluid-tight contact with an enclosing member of a capsule Beverage preparation device to provide. The beverage preparation device comprises an annular member having a free contact end that may be equipped with a plurality of radially extending open grooves. The sealing member is integrally formed with the outwardly extending flange and includes at least one projection projecting from the outwardly extending flange. The extension thereby comprises an extension top part and is configured such that its extension top part exerts a radial force on the free contact end of the annular element when the capsule is arranged in the enclosing element of the beverage preparation device and the enclosing element is closed by means of a closure element of the beverage preparation device.

Description

A capsule, a system for preparing a drinkable beverage from such a capsule and use of such a capsule in a Getränkezybereitungsvomchtung

The invention relates to a capsule containing a substance for the preparation of an intact beverage by extracting or dissolving the substance by means of the supply of a fluid under pressure into the capsule, wherein the capsule comprises an aspheric capsule body having a central capsule body axis wherein the aluminum capsule core is provided with a bottom, a sidewall, and an outwardly extending flange, the capsule further comprising an aluminum lid secured to the outwardly extending flange, the lid hermetically sealing the capsule, the capsule further a sealing element around the outwardly extending flange to provide fluid-tight contact with an encapsulating member of a beverage preparation device when the capsule is disposed in the enclosing element of the geogrid-contacting device and the enclosing element by means of a screw ements of the beverage preparation device, such as an extraction plate of Gettönkezuöereitungsvornchiung, is closed, so that the outwardly extending flange of the capsule and at least a portion of the sealing element of the capsule between the enclosing element and the closure element of the beverage preparation device in sealing engagement, wherein the enclosing element the beverage preparation apparatus comprises an annular member having a central axis of the annular member and a free contact end, the free contact end of the annular member optionally being provided with a plurality of loosely extending open grooves.

The invention also relates to a system for preparing a drinkable beverage from a capsule using a fluid which is fed under pressure into the capsule, comprising:

GeträHkezubereilungsvdmehtung. comprising a one-shot element for receiving the capsule, the opening element comprising a fluid injection manifold for supplying fluid under pressure into the capsule, the beverage-accessing device further comprising a closure element, such as an excrement plate, for closing the enclosing element of the beverage preparation device; wherein the enclosing member of the beverage preparation device further comprises an annular member that wraps a central axis of the annular member and a free contact end, wäbest! the free contact end of the annular member is optionally provided with a plurality of radially extending open grooves; a capsule containing a substance for the preparation of a drinkable beverage by extracting and / or dissolving the substance by means of the fluid supplied under pressure through the Fiunidspntzmittei the Getränkezubereitungsvörnchtung in the capsule, the capsule having an aluminum capsule body having a central capsule body axis, wherein the aluminum capsule body is provided with a bottom, a side wall and an outwardly extending flange, the capsule further comprising an aluminum cover! which is secured to the outwardly extending flange, the cover hermetically sealing the capsule, the capsule further comprising a sealing member on the outwardly extending flange to provide a flush-tight contact with the enclosing member of the beverage preparation device when the capsule is disposed in the enclosing member of the beverage preparation device and the enclosing member is closed by means of the closure element of the Getränkezubereitungsvörnchtung, so that the outwardly extending manure of the capsule and at least a portion of the sealing element of the capsule between the ennschüeenden element and the closure element of Getränkezubereitungsvörnungung are in sealing engagement ,

The invention further relates to the use of a capsule in a beverage preparation device, comprising an enclosing element for receiving the capsule, the enclosing element comprising a fluid injection means for supplying fluid under pressure into the capsule, wherein the beverage preparation device further comprises a closure element, such as an extra coating plate., for closing the enclosing element

A goatie dressing device, wherein the enclosing member of the beverage preparation apparatus further comprises an annular member having a central axis of the annular member and a free contact end, the free contact end of the annular member optionally being provided with a plurality of diametrically extending open grooves; wherein the capsule contains a substance for the preparation of a drinkable beverage by extracting and / or dissolving the substance by means of the linier pressure by the Fluideinspritzmiitei the Verkränkezuberastungsvörrichtung in the capsule supplied fluid, wherein the capsule comprises an aluminum capsule body having a central capsule body axis, wherein the aluminum capsule body is provided with a bottom, a side wall and an outwardly extending flange. the capsule further comprising an etchant cap attached to the outwardly extending flange, the cap hermetically sealing the capsule, the capsule further comprising a sealing member on the outwardly extending flange for fluid-tight contact with the enclosing member of the beverage preparation apparatus. when the capsule is disposed in the esnschiießenden element of the Getränkezybereitungsvorrichfung and the enclosing element is closed by means of the Verschlusselemenis the Getrinkezubereltungsvorrichtung, so that the outwardly extending flange of the Kapsei and at least a part of the Dächtungselemenis the capsule between the enclosing element and the closure element of Getfänkezubereitungsvorrichtung are in sealing engagement.

Such a capsule, such a system and such use are known from EP-8-1 700 548. In the known system, the capsule is provided with a sealing element which has the shape of a step, i. has a sudden increase in the diameter of the soap wall of the capsule, and the enclosing element of this known system has a sealing surface which acts on the sealing element to provide deflection of the sealing element, the sealing surface being inclined so that the deflection of the sealing element Further, in the known system, the enclosing member comprises a capstan and a manually operated or an automatic mechanism for relatively displacing the enclosing member and the capstan. By manually operated or automatic mechanism, a force is applied to the sealing element of the capsule when the enclosing element closes the capsule holder. This force should slehleieieien a fiulddlehf © sealing between the enclosing element and the capsule. Because the manually operated or automatic mechanism is arranged to be movable relative to the base, the sealing characteristics of the system may depend on the pressure of the fluid injected by the fluid injection mechanism. As the pressure of the fluid increases, so does the force between the sealing element of the capsule and the free end of the inserting element, and also increases the force between the sealing element of the capsule and the free end of the enclosing element. Such a system will be described. The sealing member of the capsule must be arranged so that upon reaching the maximum fluid pressure in the enclosing member, the sealing member will still provide fluid tight contact between the inserting member and the capsule. However, the sealing member must also be arranged so that, before or at the start of brewing, when the pressure of the fluid in the enclosing member outside the capsule is relatively low, the sealing member also provides a smooth contact between the enclosing member and the capsule If there is no fluid-tight contact between the capsule and the injecting element when it is at rest, leakage will occur. However, if leakage does occur, then there is a real possibility that the pressure in the enclosing member and outside the capsule for increasing the force on the sealing member will not be sufficiently increased by the free end of the enclosing member when the manually operated or automatic mechanism includes the enclosing member Element moved towards the cap holder. Only when sufficient initial sealing is achieved does the pressure in the injecting member also increase, whereby the force of the free end of the inserting member acting on the sealing member of the capsule also increases to provide adequate fluid contact even under increased fluid pressure. In addition, this increased fluid pressure outside the capsule also provides for increased fluid pressure within the capsule, which is essential when the capsule is covered with a blanket! equipped to be arranged on protruding elements of the capsule holder (which is also referred to as a fextraction plate) the beverage preparation device under the

Influence of fluid pressure In the capsule rupture.

From the above it follows that the sealing element is an element whose construction is very critical. It should be able to provide a fluid-tight contact between the occluding member and the capsule at a relatively low fluid pressure while using the free emiss of the enclosing member only a relatively small force acts on the support member, but should also provide fluid-tight contact provide much higher fluid pressure in the incising element outside the capsule when a higher force acts on the sealing element of the capsule by means of the free end of the inflowing element. In particular, when the free contact end of the opening member is provided with radially extending open grooves acting as a lift inlet passage after the force between the inserting member and the capsule holder is released, it is easier for a user to take out the capsule also be able to "close" the radially extending open grooves to provide an effective seal.

It is an object of the invention to provide an alternative sealing member which is relatively easy to manufacture, which is environmentally friendly. when the capsule is discarded after use and / or provides a satisfactory seal, as well as a relatively low fluid pressure, when only a relatively small force is applied to the sealing element (sometimes also referred to as the initial seal) by means of the free end of the enclosing element and a much higher fluid pressure, when (eg during brewing) a greater force is applied to the sealing element of the capsule by means of the free end of the enclosing element, even in a case of an enclosing element, the free contact end thereof equipped with radially extending open grooves.

It is also an object of the invention to provide an alternative system for preparing a drinkable beverage from a capsule and to provide an alternative use of a capsule in a beverage entangling device.

According to the invention, in a first aspect, there is provided a capsule containing a substance for preparing a drinkable beverage by extracting and / or dissolving the substance by means of the supply of a fluid under pressure into the capsule, the capsule comprising an ammonium capsule body having a central portion Capsule body axis, wherein the aluminum capsule body is provided with a bottom, a sidewall, and an outwardly extending flange, the capsule further comprising an aluminum lid secured to the outwardly extending flange, said lid hermetically sealing the capsule wherein the capsule further comprises a sealing member on the outwardly extending flange to provide a fluid-tight contact with an enclosing member of a beverage preparation device when the capsule is disposed in the final closure member of the beverage preparation apparatus and the terminal E by means of a closure element of the beverage preparation device, such as an extraction slide of the beverage container, so that the outwardly extending flange of the capsule and at least a portion of the sealing element of the capsule are sealingly engaged between the enclosing element and the closure element of the beverage preparation device wherein the enclosing member of the beverage maker comprises an annular member having a central axis of the annular member and a free contact end, the free contact end of the annular member optionally being provided with a plurality of radially extending open grooves, characterized in that the sealing member comprises the outwardly extending flange is one-piece and comprises at least one extension projecting from the outwardly extending flange, the at least one prolonged salt, an extension top, and wherein the at least one extension is configured to have its extension top exerting a radial force on the free contact end of the annular element when the capsule is disposed in the enclosing element of the beverage preparation device and the enclosing element is closed by a sealing element of the beverage preparation device , Since the sealing element is integrally formed with the outwardly extending flange and has at least one extension, the top of which applies a radial force to the free contact end of the annular element when the capsule in the enclosing element of

Geirankezubereitungsvornchtung angeordnei and the including 'is closed element by means of a closure element of Getränkezubereitungsvorvorchtung, a satisfactory seal can be achieved. Such a sealing element is relatively easy to manufacture. Further, the capsule may provide a satisfactory seal with the free contact end provided with radially extending open grooves. In addition, the seal facilitates positioning of the capsule within the tube feeding device.

In the present application, the presence of a fluid-tight contact means that 0 to 6%, preferably 0 to 4%, more preferably 0 to 2.5% of the total fluid delivered to the enclosing element for preparing the beverage due to leakage between the free contact end and can escape the sealing belt of the capsule.

The invention is particularly advantageous when, in a capsule embodiment, the capsule is filled with 5 to 20 grams, preferably 5 to 10 grams, more preferably 5 to 7 grams of an oil-rich product, such as roast and ground coffee, in one embodiment erfinduogsgemäßen capsule, which is particularly easy to produce herzusa. For example, the outer diameter of the outwardly extending flange of the capsule is greater than the diameter of the bottom of the capsule. Preferably, the outside diameter of the outwardly extending flange is about 37.1 mm and the diameter of the bottom of the capsule is about 23.3 mm.

The invention is particularly advantageous when, in one embodiment of a capsule, the thickness of the aluminum capsule body is such that it is easily deformable when the capsule m encloses the element

Bezuzuelteltungsvoiichichtung angeordnei and the enclosing element is closed by means of a closure element 'of the beverage preparation device. Preferably, the thickness of the Alumnniumkapseikörpers is 20 to 200 microns, preferably 100 prn.

The invention is particular. advantageous if, in an outer tube of a capsule, the thickness of the aluminum lid is 15 to 6.5 μm, preferably 30 to 45 μm and more preferably 38 μm,

In an embodiment of a capsule according to the invention, the wall thickness of the aluminum lid is smaller than the wall thickness of the capsule; Äluminiumkapselkörpers,

In another embodiment of a capsule according to the invention, the aluminum lid is arranged on a closure element of the beverage preparation device, such as an extraction plate of the beverage preparation device, in such a way that it is torn open under the influence of fluid pressure in the capsule.

In an embodiment of a capsule according to the invention, which is particularly easy to manufacture, the sidewall of the aluminum capsule body has a free end opposite the sod, the outwardly extending flange extending from the free end of the sidewall in a direction at least substantially transverse to the central one Kapseikorperaehse runs. Preferably, the outwardly extending flange includes a convoluted outer edge that is frustrated. A satisfactory seal with the free contact end provided with radially extending open grooves has a positive effect. The radius around the central capsule body axis of an inner edge of the curled outer edge the outwardly extending flanges are preferably at least 32 mm, so that the distance from the annular end surface of the enclosing element is ensured. It is then preferred, when the sealing member is disposed between the free end of the wall of the aluminum capsule body and an inner edge of the curled outer edge of the outwardly extending flange, to still provide a further satisfactory seal. receive.

Uni make sure that the curled outer edge does not interfere with operation of a large variety; of commercially available and future beverage preparation devices, the outwardly extending flange has a largest radially extending cross-sectional dimension of about 1.2 mm.

The invention is particularly advantageous for capsules whose inside diameter of the free end of the side wall of the aluminum capsule body is approximately 29.5 mm. The distance between the free end of the rare wall of the aluminum capsule body and an outermost edge of the outwardly extending flange may be about 3.8 mm. The preferred height of the aluminum capsule body is about 28.4 mm, in one embodiment of a capsule according to the invention, which is more easily removable from a beverage preparation device after use for a user. is the Aiurniniumkapseikärper frusto-conical, wherein the side wall of the Aiumfniumkapselkörpers with a line transverse to the middle capsule body axis preferably an angle of about 9?, 5 <! opens

In an advantageous embodiment of a capsule according to the invention, the bottom of the capsule body has a maximum inner diameter of about 23.3 mm. It is preferred that the bottom of the capsule body is a truncated cone, preferably having a bottom height of about 4.0 mm, and the bottom also having a generally flat central portion opposite the lid having a diameter of about 8.3 mm.

In virtually all cases, a satisfactory seal can be achieved in an embodiment of a capsule according to the invention in which the height of the sealing element first to be contacted by the free end of the enclosing element when the enclosing element is closed is at least about 0.1 mm is, preferably at least 0.2 mm and more preferably at least 0.8 mm and at most 3 mm, more preferably at most 2 mm and most preferably at most 1.2 mm

In a preferred embodiment of a capsule according to the invention, the capsule comprises an inner surface and an inner coating is provided on the inner surface of at least the soap wall of the capsule, in particular when the capsule is made by deep drawing, the inner coating facilitates the deep-drawing process. In the case where the aluminum lid of the capsule is attached to the outwardly extending flange by means of a sealing varnish, it is particularly advantageous if the inner coating consists of the same

Material like the Diehtungsiack exists. Depending on the inner coating used, it is preferred that the sealing member be free of an inner coating to prevent peeling of the inner coating from the thief.

In a further embodiment of an encapsulation capsule, the capsule comprises an outer surface, wherein a color coat is provided on the outer surface of the capsule. To facilitate deep drawing, it is preferred. to provide an outer coating on an outer surface of the color coat. Depending on the color coat and the outer coating used, it is preferred that the sealing element be free of a colored lacquer (and thus also outer outer coating) to prevent peeling of the paint bag / coating from the sealing fabric.

In yet another embodiment of a capsule according to the invention, the at least one extension comprises an extension side wall inclined relative to the outwardly extending flange of the aluminum capsule body, the extension side wall being configured to be easily deformable when the capsule is arranged in the enclosing element of the Getränkezubereitungsvorvorchung and the enclosing element is closed by means of a Verschuselement the beverage preparation device. This increases the force exerted on the free contact end and thus improves the seal. It is then preferred that the distance between the extension and the serial wall of the Ajuminiumkapselkörpers is such that the free contact end of the annular member is contacted by the extension and the side wall of the aluminum capsule body, when the capsule is arranged in the einbshlendes element of Getränkebeereitngvorungung and the enclosing Element is closed by means of a Verschisseiemenis the beverage preparation device.

In an advantageous embodiment of a capsule according to the invention, the sealing member comprises, in addition to the at least one extension which understands the outwardly extending flange, a plateau between the extension cup and the side wall of the capsule body. Providing a seal is advantageous if a bearing is formed by the extension, the plateau and the set wall of the aqueous capsule body, wherein the distance between the extension and the side wall is such that the free Koniktende of the annular element of the extension and the Side wall of the Aiuminiumkapseikörpers is enclosed, when the capsule is arranged in the einschnßßenden element of the potassävorungsvorrichfung and the enclosing element by means of a Versehlussetemenfs the beverage preparation device is closed.

The extension, the rare wall of the Aiuminiumkapseikörpers and the plateau can be arranged so that the free contact end of the annular element is contacted by the plateau, when the capsule is arranged in the einschiießenden element of the beverage preparation device and the opening element is closed by means of a Verscnfussesements the Getränkevorungsvorrlchtung ,

Alternatively, the sealing member may comprise two spaced extensions respectively projecting from the outwardly extending flange and a pair between the two extensions, the distance between the two extensions being such that the free contact end of the annular element between converging surfaces of the two both appendices is incorporated, when the capsule is arranged in the opening element of the Geifinkezubereitereivornchiung and the opening element is closed by means of a Versehiusselemenfs Beveragezubungsngsvorrichtung. It is then preferred that the distance between the two projections is such that the free contact end of the annular element is contacted by the two projections when the capsule in the inserting element of the

In particular, a satisfactory seal can be obtained if the two spaced apart projections and the plateau are arranged to contact the free contact end of the annular element from the plateau, when the capsule is closed in the enclosing element of the beverage preparation device Disposed and the enclosing element is closed by means of a Verschylsselements the Getränkezubereitungsvoorrtcbfung. The capsule may preferably be a bearing for the enclosing element of

The beverage recycling device comprises, when the capsule in the leaching element of the beverage preparation device. is arranged and the enclosing element is closed by means of a Versehlussefements the beverage preparation device, wherein the bearing includes at least one i eil of the free contact end of the annular element and the bearing is formed by the two extensions and the plateau between them.

The plateau may be substantially flat or may include a curved portion. In particular, the Ausführungsforrh a erfincfüggemäßen capsule is advantageous in which the plateau is V-shaped. In this way, the free contact end of the annular element is squeezed between the two extensions, whereby a satisfactory sealing animal is set.

Another object of embodiments of the invention is to achieve reliable low and high pressure seals against the free contact end of the enclosing member, particularly with low sensitivity to variations in diameter, thickness and shape of the free contact end occurring between different models of brewing systems can, and also with respect to the non-circularity (for example oval shape) of the free contact end and / or fianschs of the capsule, the latter can be done for example by the Zusammendrucken of capsules in a shopping bag or a supermarket market. In one embodiment of the invention, this object is achieved in that a first of the two extensions further from a Basisistei! of the outwardly extending flange, to which the base strap of the cover is attached, projects as a second of the two extensions.

When the enclosing member is closed, when too much of the one of the projections projecting farthest from the base member is located below a position, or axially on the same line as the free contact end, it is pushed radially away, so that the free end of contact along the farthest reaches of the extensions passes. This radial displacement also brings the other of the extensions radially to the free end so that it is accurately positioned for a tight seal with the free contact end. Moreover, the most protruding of the extensions is deformable over a relatively long distance in a radial sense, so that it can adjust to relatively large deviations, while the other of the extensions is relatively stiff, which is advantageous for applying a fixed sealing pressure.

When the first of the foil sets is the inside of the two extensions, the capsule is particularly suitable for use in commercially available devices, such as Citiz, Lattisima, U, Maestria, Pixie, Inissia and Essenza, where the free contact end of the annular element is provided with a plurality of radially extending open grooves, wherein the grooves in the inner Öberflächenteil lower than in the outer Öberflächentei! the free contact end or the grooves are absent in the outer surface portion of the free contact end. In such devices, a seal is reliably and accurately achieved between the second of the extensions and the relatively smooth surface portion of the free contact end.

To achieve a reliable seal, it is also advantageous if the first of the two extensions has an extreme upper end which extends around the capsule axis in a diameter of 31.9 to 32.4 mm, and the second of the two extensions has an extreme upper end , which extends around the Kapseiachse in a diameter of 29 ^ 2 to 29.8 mm. Therefore, in one use, in the commercially available coffee prepartions, such as Citiz, Lattisima, U, Maestria, Pixie, inissia, and Essenza, an outer perimeter of the free end of the opening element is pressed firmly against the second perimeter

When the plateau is axially spaced from the lid, this area between the first and second extensions is axially displaced toward the lid, while the enclosing element is closed by means of the beverage preparation door sliding element. This causes the first extension and the second extension to be deformed toward the free contact end of the annular element, due to the tilting and "locking" of the first extension and the second extension, thereby increasing the radial contact pressure against the free contact end of the annular element is exerted, which helps to achieve a satisfactory seal.

According to the invention, in a second aspect there is provided a system for entangling a drinkable beverage from a capsule using a fluid supplied under pressure into the capsule, comprising: a beverage preparation device comprising an enclosing member for receiving the capsule, the enclosing member being a F fluid injection means for delivering fluid under pressure into the capsule, the beverage preparation apparatus further comprising a closure member, such as an extraction plate, for closing the inclining member of the beverage preparation device, the enclosing member of the beverage preparation apparatus further comprising an annular member having a central axis the annular member and a free contact end, wherein the free contact end © of the annular member is optionally configured with a plurality of radially extending open grooves; a capsule containing a substance for the preparation of a drinkable beverage by extracting and / or dissolving the substance by means of the fluid injection! the capsule comprises an aluminum capsule body having a central capsule body axis, the capsule body having a bottom, a sidewall and an outwardly extending flange, the capsule further comprising an aluminum cap which is mounted on the outwardly extending flange, the lid hermetically sealing the capsule, the capsule further comprising a sealing member on the outwardly extending flange to provide a fluid tight contact with the enclosing member of the beverage storage device Capsule is arranged in the enclosing element of the beverage preparation device Is and the einsehlendes element is closed by means of the closure element of the beverage preparation device, so that the outwardly extending flange of the capsule and min in the first place, a part of the sealing element of the capsule between the esnschlieftenden element and the closure element of the Getränkebeerevorituitugsvorrlchtuog in sealing engagement, characterized in that the sealing element is integrally with the outwardly extending flange and at least one projection which extends from the outwardly extending flange stands, with at least one

An extension includes a conveyor mat and wherein the at least one extension is configured to exert a radial force on the free contact end of the annular element when the capsule is disposed in the enclosing element of the beverage preparation device and closes the enclosing element by means of a closure member of the beverage conveyor becomes.

Since the sealing member is integrally formed with the outwardly extending flange and includes at least one extension whose upper portion exerts a radial force on the free contact end of the annular member when the capsule is disposed in the enclosing member of the beverage preparation apparatus and the embossing member Closure element of the Getfinkezubereitungsvornchtung is closed, a satisfactory seal can be achieved. Such a lighting element is relatively easy to produce. Further, the capsule can provide a satisfactory seal with the free contact end equipped with radially extending open grooves.

The extension or the extensions may protrude from at least one Baststell of Fianschs, wherein the lid is attached to this base arrow. The extension or extensions may protrude axially from the saso part in a direction away from the cover. The appendage shell may represent part of the appendage, for example, a half, a third, or a quarter of the appendix of the Bas'lsfel! axially most distant.

With respect to the preferred embodiments of the system as set forth in the dependent claims, which relate to the same features as the features of the dependent claims of the capsule, reference is made to the above.

The invention is particularly suitable in a system according to the invention, in which, in use, the maximum fluid flow in the enclosing element of the frying cycle device is in the range of 6 to 20 bar, preferably 12 to 18 bar. Even at this high pressure, a satisfactory seal between the capsule and Getränkezubereitungsvorriebtung be obtained

Preferably, the system is arranged such that in use during brewing, a free end of the enclosing member of the beverage preparation apparatus exerts a force F2 on the capsule's oiling body to provide buid-proof contact between the outwardly extending flange of the capsule and the injecting member of the capsule Provide beverage preparation device, wherein F2 in the range of 500 to 1500 N, preferably in. Range from 750 to 1250 N is when the fluid pressure P2 in the closing element of the beverage preparation outside the capsule is in the range of 6 to 20 bar, preferably 12 to 18 bar. In particular, the system is arranged such that, in use, before or at the start of brewing, a free end of the encapsulating member of the beverage wrapping device exerts a force F1 on the sealing member of the capsule to provide fluid-tight contact between the outwardly extending flange of the capsule and the enclosing element of the beverage preparation apparatus wherein F1 is in the range of 30..bis. 150 N, preferably in the range of 40 to 150 N, more preferably 50 to 100 N Ist, when the fluid pressure PI in einschileßenden element of the

Getränkezubereitungsvornchtung outside the capsule in the range of 0.1 to 4 bar, preferably between 0.1 and 1 bar.

In an embodiment of a system according to the invention, the plurality of radially extending open grooves in a tangential direction of the free contact end of the annular element of the Geirankezubereitungsvorrichtung equally spaced apart, so that it is easier for a user to take out the capsule, while a satisfactory seal between the Capsule and the Getränkezubereitungsvornchtung can still be provided.

In an advantageous embodiment of a system according to the invention, the longest tangential width of each groove (measured from the uppermost end to the uppermost end, ie equal to the groove-to-groove distance) is 0.9 to 1.1 mm, preferably 0.95 ms to 1.05 mm More preferably, 0.98 to 1.02, wherein a maximum height of each groove in an axial direction of the inserting member of the beverage adding device δ, θ1 to 0.09 mm, preferably 0, (53 to 0.07 mm, more preferably 0.045 mm) 0.05 mm, preferably 0.05 mm, and the number of grooves is 90 to 110, preferably 96. The radial width of the annular earth surface at the location of the grooves may be, for example, 0.05 to 0.9 mm, preferably 0, 2 d; s, 7 mm, and more preferably 0.3 to 0.55 mm,

The invention is particularly applicable when applied to an embodiment of a system according to the invention wherein, during use, when the conveyor of the beverage preparation device closes the opening element of the beverage preparation device, at least the free contact end of the enclosing element of the beverage preparation device is under the effect of pressure of the fluid In. may move the enclosing element of the beverage preparation device relative to the closure element of the container entangling device toward the closure element of the beverage preparation device to apply the maximum force between the flange of the capsule and the free end of the espresso-extinguishing element of the beverage preparation device. The enclosing member may comprise a first part and a second part, the second part comprising the free contact end of the enclosing member, the second part being movable relative to the first part between a first and a second position. The second part may move under the influence of fluid pressure from the first position to the second position in the direction of the sealing element in the enclosing element. The force F1, as discussed above, may be achieved with a fluid pressure PI when the second part is in the first position. As discussed above, the second part may be achieved under the influence of the fluid pressure P2 in the first position einschibendes element is moved to the second position.

According to the invention, in a third aspect there is provided a use of a capsule according to the invention in a beverage preparation package comprising a captive member for receiving the capsule, the enclosing member comprising a fluid spraying means for feeding fluid under pressure into the capsule, the beverage preparation means further comprising a closure member , such as an extraction plate, for closing the inflowing element of the beverage preparation device, wherein the dividing element of the beverage preparation device further comprises an annular element having a central axis of the annular element and a free contact end, the free contact end of the annular element optionally having a ring Variety of radial grooves is equipped; the capsule containing a substance for the preparation of a drinkable beverage by extracting and / or dissolving the substance by means of the fluid supplied under pressure into the capsule by the fluid injection means of the beverage preparation device, the capsule comprising an aluminum capsule body having a central capsule body axis, wherein the aluminum capsule body is provided with a bottom, a sidewall, and an outwardly extending flange, the capsule further comprising an aluminum cover secured to the outwardly extending flange, the lid hermetically sealing the capsule, the capsule further a support member on the outwardly extending flange to provide fluid-tight contact with the sinking member of the beverage delivery device when the capsule is disposed in and enclosing the enclosing member of the beverage supply apparatus The element is closed by the Versehlusselements the beverage preparation device, so that the outwardly extending flange of the capsule and at least a part of the Dlchtungsefements the capsule between the einschileßenden element and the closure element of Getränkezubereitungsvornchiung in sealing engagement. With regard to the advantage of the use according to the invention and the preferred embodiment of the use as stated in the dependent claims, which relate to the same features as the features of the dependent claims of the capsule or the dependent claims of the system, reference is made to the above .

The invention will now be further explained by way of non-limitative example with reference to the drawings, in which:

Figure 1 is a schematic representation of an embodiment of an inventive system;

FIG. 2 shows in a perspective view an embodiment of a beverage preparation device of a system according to the invention, wherein the free contact end of the enclosing element is the

Geiranke preparation method is shown with a plurality of radially extending open grooves:

3A shows in cross section an embodiment of a capsule according to the invention before use;

Fig. 38 is an enlarged fragmentary view of the capsule of Fig. 3A, showing the outwardly extending flange and seal member;

FIG. 30 is an enlarged detail view of the outwardly extending fascia of the capsule of FIGS. 3A and 3B after use: FIG.

4A shows a detailed embodiment of a sealing element on the flange of a capsule according to the invention which extends outwardly;

4B shows a second embodiment of a sealing element on the outwardly extending flange of a capsule according to the invention;

Fig. 40 shows a third embodiment of a sealing element on the outwardly extending flange of a capsule according to the invention;

4D shows a fourth embodiment of a sealing element on the outwardly extending flange of a capsule according to the invention;

Figure 4E shows a fifth embodiment of a dicing brush on the outwardly extending flange of a capsule according to the invention; and

4F shows a sixth embodiment of a sealing element on the outwardly extending flange of a capsule according to the invention;

4G shows a seventh embodiment of a sealing element on the outwardly extending flange of a capsule according to the invention; and Figures 5A and 5B are schematic representations of successive stages of deformation of the seventh embodiment of a sealing member on the outwardly extending flange of a capsule according to the invention when the capsule is placed in the enclosing element of the beverage supply device and while the enclosing element is by means of a closure member of the beverage preparation device is closed by a Verscbfusselemenfs GetränkebeereStyngsvorrichtung; and

Figure 8 is a schematic cross-sectional illustration of a deformable hinge portion of a portion of an opening element, with a bridge between an inner and an outer edge of a free end of the enclosing element.

In the figures and the following description, like reference numbers refer to like features,

Fig. 1 shows a schematic cross-sectional view of an embodiment of a system 1 for preparing a drinkable beverage from a capsule using a fluid supplied under pressure into the capsule. The system 1 comprises a capsule 2 and a Getränkezuhereitungsvornchtung 4. The device 4 comprises an enclosing element 6 for Halfen the Kaosel 2, Die. Vorruthtuna 4 further comprises a flow element, such as an extractor, 8 for supporting the capsule 2.

In Fig. 1, a gap is drawn between the capsule 2, the enclosing elements and the extraction plate 8 for the sake of clarity. It will be understood that in use the capsule 2 may contact the enclosing element fi and the extraction plate 8. Usually, the enclosing element 6 has a shape that is complementary to the shape of the capsule 2. The device 4 further comprises a FMideinspritzmiitel 10 for supplying an amount of fluid, such as water, under pressure in the range of 6 to 20 bar, preferably between 12 and 18 bar, the replaceable capsule. 2

In the example shown in Fig. 1, the exchangeable capsule 2 comprises an aluminum capsule body 12 having a central capsule body t.2A and a

Aluminum ceiling! 14 was wrong. In the present context, the meaning of aluminum should be understood to include an aluminum alloy. In the present example, the Auminiumkapseikprper 12 includes a övelwand 16, a bottom 18 which einschiießt the Sertenwand 16 at a first end, and an outwardly extending flange 20 extending from the peripheral wall 60 at a second end, the bottom of the 18th opposite sst, extends outwards. The side wall 16, the bottom 18 and the lid 14 include an interior space 22 containing a substance for the preparation of a drinkable beverage by extracting and / or dissolving the substance. Preferably, the substance is 5 to 20 grams, preferably 5 to 10 grams, more preferably 5 to 7 grams of roast and ground coffee for the preparation of a single beverage. The capsule is initially sealed, i. it is hermetically sealed before use.

The system 1 of Fig. 1 comprises a bottom piercing means 24 for piercing the bottom 18 of the capsule 2 to provide at least one outlet opening 25 in the bottom 18 for supplying the extractable product to the fluid through the inlet opening 25,

The system 1 of Fig. 1 further comprises a lid piercing means 28, here embodied as extensions of the closure member 8 for piercing the lid 14 of the capsule 2. The lid piercing means 26 may be arranged to rupture the lid 14 after a (fluid) pressure within the interior space 22 exceeds a levitation pressure and pushes the blankets 4 against the lid piercing means 28 with sufficient force. The aluminum lid 14 is thus arranged to rupture under the influence of fluid jerk in the capsule on the Verschisseiement 8 of Getränkezubereitungsvorvorungung.

The capsule 2 further comprises a sealing element 28, indicated in FIGS. 1, 3A and 3B as a general box, but described in more detail with reference to FIGS. 4A to 4E, with the sealing segment 28 disposed on the outwardly extending flange 20 to engage with the same Element 8 to provide a fluid-tight contact. when the capsule 2 is placed in the enclosing element 6 and the enclosing element 6 is closed by means of the extraction plate 8 so that it extends outwardly

Flange 20 of the capsule 2 and at least a part of the sealing element. 28 between the enclosing member 6 and the extraction plate 8 are in sealing engagement. This means that a fbldichter contact between the Däching element and the free contact end is made,

As shown in FIG. 2, the soda-wetting member 6 of the beverage preparation apparatus comprises an annular member 41 having a center axis of the annular member 41A and a free contact end 30. The free contact end 30 of the annular element 41 is provided with a plurality of radially first open grooves 40. The plurality of radially extending open grooves 40 are uniformly spaced relative to each other in a tangential direction of the free contact end 30 of the annular member 41. Pie longest tangential width of each groove 40 is 0.9 to 1.1 mm, preferably 0.95 to 1 , 05 mm, even better 0.98. to 1.02 mm, wherein a maximum height of each groove 40 in an axial direction of the enclosing member 8 is 0.01 to 0.09 mm, preferably 0.03 to 0.0 / mm, more preferably 0.045 to 0.055 mm, and most preferably G. 05 mm. The number of grooves 40 is in the range of 90 to 110, preferably 96. Typically, the radial width of the free end at the location of the grooves Ö.ÖS is up to 0.9 mm, more specifically 0.2 to 0.7 mm, even more specific 0th , 3 to 0.55 mm.

In the illustrated embodiment, the outer diameter ODF of the outwardly extending flange 20 is greater than the diameter DB of the bottom 18 of the capsule 2. In the embodiment shown, the outer diameter is OOP of the outwardly extending flange 20 is approximately 37.1 mm, and the diameter DB of the bottom 16 is approximately 23.3 mm. The thickness of the aluminum capsule body 12 is so. that it is easily deformable. when the capsule is placed in the enclosing element of the beverage preparation device and the enclosing element is closed by means of a closure element of the beverage preparation device, preferably the thickness of the aluminum capsule body is 100 μm, but in other embodiments the thickness may be between 20 and 200 μm.

In the illustrated embodiment, the wall thickness of the Auminiumdekel 14 39 gm, the wall thickness of the Atuminiumdeokels. 14 is preferably smaller than the thickness of the aluminum capsule body 12,

The rare wall 16 of the aluminum capsule body 1.2 has a free end 42 opposite to the bottom 18. The inner diameter IDF of the free end 42 of the rare wall 16 of the aluminum capsule body 12 is about 29.6 mm. The outwardly extending flange 20 extends from the free end 42 in a direction at least substantially transverse to the central capsule body axis 12A. The outwardly extending flange 20 includes a curled outer edge 43 which is advantageous for maintaining a seal between the capsule and the enclosing member. In the illustrated embodiment, the curled outer edge 43 of the outwardly extending flange 20 has a largest dimension of about 1.2 mm, the distance DIF between the free end 42 of the side wall 16 of the aluminum capsule body 12 and an inner edge 43A of the curled outer edge 43 is about 2.7 mm, while the distance DOF between the free end 42 of the Rare wall 18 of the Aiumimumkapselkörpers 1.2 and an outermost edge 438 of the outwardly extending flange «20 is about 3.8 mm The radius around the central capsule body axis of the inner The edge 43A of the curled outer edge 43 is preferably at least 32 mm.

As shown in Figures 3A and 3B, the sealing belt 23 is disposed between the free end of the side wall 18 of the aluminum capsule body 12 and the inner edge 43A of the curled outer edge 42 of the outwardly extending flange. The sealing member 28 is indicated as a generic box however, will be described in more detail below. Regardless of the embodiment of the sealing member 28, the height of the sealing element first contacted by the free end of the enclosing member when the enclosing member is closed is at least about 0.1 mm, more preferably at least 0.2 mm, and most preferably at least 0.8 mm and not more than 3 mm, more preferably not more than 2 mm and most preferably not more than 1,2 mm for the provision of a correct seal,

As can be seen from Fig. 3A, the aluminum bicuspid body 12 is frusto-conical. In the embodiment shown, the sidewall 16 of the alymmer capsule body 12 encloses an angle A with a line transverse to the central capsule body axis 12A of approximately §7.5 °. The bottom 18 of the aluminum capsule body 12 has a largest inner diameter OB of approximately 23.3 mm. Outer bottom 18 of the Aiuminiumkapseikorpers 12 is also frusto-conical and has a bottom height BH of about 4.0 mm in the illustrated embodiment. The bottom 18 also has a generally flat central portion 18A opposite the lid 14. The middle portion 18A has a diameter DEE of approximately 8.3 mm, and in the middle portion 18A, the internal opening is hzw. 25 openings can be made. The inlet openings may also be made in the frusto-conical portion between the central portion 18A and the side wall 16. The overall height TH of the Aiuminiumkapseikorpers 12 of the capsule is approximately 28.4 mm.

The system 1 shown in Figure 1 is operated to cook a cup of a drinkable beverage, in this example coffee, as follows, the substance in the capsule being roast and ground coffee.

The capsule 2 is arranged in the einschiießenden element 6. The extraction plate 8 is brought into contact with the capsule 2. The bottom piercing means 24 pierces the bottom 18 of the capsule 2 to create the inlet openings 25. The fluid, here pressurized hot water, is then supplied to the explosive product in the interior 22 through the inlet ports 25. The water then wets the ground coffee and extracts the water desired substances for the formation of the coffee beverage. While, the supply of water under pressure to the interior 22 then increases the pressure within the capsule 2. Increasing the pressure then causes the ceiling! 14 is deformed and pressed against the lid piercing means 26 of the extraction plate. Once the pressure is on. reached certain level, the tensile strength of the lid 14 is exceeded and then tears the lid 14 against the lid piercing means 26, whereby Äusgangsöffnungen be created. The prepared coffee then runs through the exit openings and

Outlets 32 (see Fig. 1) of the extraction plate 8 and may be supplied to a container such as a cup (not shown).

The system 1 is designed so that, prior to or at the start of brewing, the free end 30 of the enclosing member 6 exerts a force F1 on the damper 28 of the capsule 2 to provide a fluid tight contact between the outwardly extending flange 20 of the capsule 2 and to provide the enclosing element 6 of the beverage preparation device, wherein F1 is in the range of 30 to 160 H, preferably 40 to 15.0 N, more preferably 50 to 100 N, when the fluid pressure P1 in the containing element of the beverage supply outside the capsule is in the range of 0.1 to 4 bar, preferably 0.1 to 1 bar. During cranking, the free end 30 of the enclosing member 6 exerts a force F 2 on the sealing member 28 of the capsule 2 to provide a fluid tight contact between the outwardly extending flange 20 of the capsule 2 and the enclosing member 6 , F2 is in the range of 500 to 1500 N, preferably in the range of 750 to 1250 N, when the fluid pressure P2 in the nipping element 6 of the beverage preparation device outside the capsule 2 is in the range of 6 to 20 bar, preferably 12 to 18 bar , In the illustrated embodiment, the free contact end of the enclosing member 6 relative to the exfraction plate 8 can move toward the expectoration plate 8 under the effect of the pressure of the fluid in the enclosing member 6, to reach the maximum force F2 between the outwardly extending flange 20 and the outermost flange exercise free end 30 of the enclosing element 6. This movement may occur during use, i. Especially at the beginning of brewing and during brewing. The enclosing element 6 has a first part 6A and a second part 8B, the second part comprising the free contact end 30. The second part OB may move relative to the first part 6A between a first and a second position. The second part 8B can move from the first position to the second position in the direction of the closure element 8 under the influence of fluid pressure in the enclosing element 6. The force F1, as discussed above, can be achieved with a fluid pressure PI when the second part 6B is in the first position. As discussed above, the force F2 can be achieved when the second part 6B under the influence of the fluid pressure P2> .n the enclosing element 6 is moved to the second position ',

As a result of the applied force, the sealing element 28 of the capsule according to the invention is plastically deformed and fits snugly against the grooves 4 O of the free contact end 30 and in this way stiffens a fluid ring. Contact between the incising member 6 and the capsule 3 is at a relatively low fluid pressure during initiation of flowering, but also provides fluid-tight contact at a much higher fluid pressure in the containment element outside the capsule during flowering. This close contact with the grooves 40 of the enclosing element is shown in FIG. Specified 3 €, showing the capsule 2 of the invention after use and In the clearly visible. the outwardly extending flange 20 has deformations 40 ', mating with the grooves 40 of the enclosing element.

The following is a description of exemplary embodiments of a sealing element 20 on the outwardly extending flange 20 of the capsule 2 according to the invention in more detail with reference to FIG.

4A shows a first embodiment of a sealing element 28 which forms an additional bearing on the outwardly extending flange 20 of a capsule 2 according to the invention. The nozzle element and the rest of the capsule body are made of the same Biechmatenai. The sealing element 28 comprises two: spaced appendices 50 and 51 which are of a base! the outwardly extending flange 20, with the lid 14 secured to the base member, each projecting axially in a direction away from the lid 14. A plateau 52 is present between the two extensions 50 and 51. The distance between the two extensions 50 and 51 is such that the free contact end of the annular element 6 is wedged between converging surfaces of the two extensions 50 and 51 when the capsule is disposed in the enclosing element of the beverage preparation device and the enclosing element by means of a closure element the drink preparation device is closed. In the embodiment shown in Fig. 4A, the plateau is located at a distance above the portion of the outwardly extending flange 20 between the seal member 28 and the curled edge 43, and is substantially flat. The distance between the two extensions 50 and 51 is further such that the free contact end of the annular element is contacted by the two extensions 50 and 52 when the capsule is disposed in the enclosing element of the device and the enclosing element by means of a connecting element the Getränkezubereitungsvörnchtiing is closed. Further, each of the two projected extensions 50, 51 and the plateau 52 are arranged so that when the capsule is placed in the embedding member of the beverage preparation device, the contact end of the annular member is contacted by the plateau, and the enclosing member is disposed by means of a closure member the beverage preparation device is closed. As seen in Figure 4A, each extension 50, 51 includes an extension side wall which is inclined relative to the outwardly extending flange 20 of the aluminum capsule body. The extension sidewall is configured to be readily deformable when the capsule is disposed in the enclosing member of the beverage preparation apparatus and the enclosing member is closed by means of a closure element of the skinside compaction chamber.

4B shows a second embodiment of a sealing element 28 on the outwardly extending flange 20 of a capsule according to the invention, in comparison with FIG. 4A reference is made to the following differences. Each extension 50, 51 now includes an extension sidewall transverse to the outwardly extending flange 20 of the aiumium capsule body. Furthermore, in this second embodiment, the plateau 52 is curved, preferably matching the shape of the free contact end of the annular element 6.

Fig. 4C shows a third embodiment of a sealing element 28 on the outwardly extending flange 20 of a capsule according to the invention, which together with the frame wall 18 of the aluminum capsule body forms an additional bearing for the injecting element. The illustrated seal member 28 includes an appendage 53 projecting from the outwardly extending flange 20, and a sloped, substantially flat plateau 52 between a rounded topmost end of the appendage 53 and the sidewall 18 of the alumina shell body. In the present embodiment, the bearing is formed by the extension 53, the plateau 52 and the sidewall 18 of the aluminum capsule body. The distance between the top of the

Projection 53 and the side wall 18 is such that the free contact end of the annular member 6 is enclosed by the extension 53 and the side wall 16 of the Alumimumkapseikorpers when the capsule is arranged in the Einschbenenden element of the container preparation device and the enclosing element by means of a Verschlusseements the beverage preparation device is closed. In particular, the distance zw.sehen the extension 53 and the side wall. 16 of the aluminum capsule body so that the free contact end of the annular member 6 is contacted by the extension 53 and the soap wall 16 and in the embodiment shown also the plateau 52 of the aluminum capsule body when the capsule is disposed in the enclosing member of the beverage preparation apparatus and the enclosing member is closed by means of a closure element of the beverage preparation device.

Fig. 4D shows a fourth embodiment of a serving element 28 on the outwardly extending flange 20 of a capsule according to the invention, which together with the side wall 1o of the capsule body of the Aiuminium capsule ausbelffef an additional bearing for the emschlleßende element. In comparison with FIG. 4C, the following differences are noted, in this fourth embodiment the plateau 52 is curved and comprises a curved part and also a flat part which is at the same height as the part of the outwardly extending noise 20 between the Extension 63 and the curved edge 43 is arranged. The curved part preferably adapts to the shape of the free contact end of the annular element 8. Fig. 4E shows a fifth embodiment of a sealing member 28 on the outwardly extending flange 20 of a capsule according to the invention, which together with the side wall 16 of the Aium: niumkapseikörpers forms a bearing for the enclosing element in comparison with Flg. 40, reference is made to the following difference. In this fifth embodiment, the flat part of the plateau 52 is disposed at a distance above the part of the outwardly extending flange 20 between the projection 53 and the curved edge 43. The distance between the extension 53 is preferably 0.9 to 1.25 mm, which allows the free end of the closure element of widely used and commercially available beverage preparation devices (such as, for example, Citiz.

Laftisima, U, Maesfrta, Psxse, Inissta and Essenza) is reliably squeezed against the extensions 53, the side wall 16 being close thereto. In the embodiments shown in Figs. 40-4E, the extension 53 comprises an outer longitudinal side wall 54. The part of the outwardly extending flange between the extension 53 and the curled edge 43 is perpendicular, in other embodiments Side wall 54, however, may also be inclined relative to that part of the outwardly extending flange 20. in all of the embodiments shown in Figures 4A to 4E, the appendages each comprise an appendage top portion, which is a portion of the appendage, for example a half, a third or a quarter of the appendage, which is axsai most distal to the base portion of the pennant 28 the lid 14 is attached. In preferred embodiments, at least one extension, but preferably all extensions forming the bearing, are configured such that their extension tops exert a radial force on the free contact end of the annular element 6 when the capsule is placed in the enclosing element of the beverage brewing device Is and the enclosing element is closed by means of a closure element of the beverage preparation device.

Fig. 4F shows a sixth embodiment of a seal member 28 on the outwardly extending flange 20 of a capsule according to the invention. Compared to the example of Figs. 48, the following differences are noted, in this sixth embodiment, the plateau 52 is V-shaped with the bottom of the V-shape at the same height as the base portion of the outwardly extending flange 20 between the outer extension 51 and the curled edge 53 is. In this way, no bearing is formed for the free contact end of the annular member 6, but the upper extension part of the inner extension 50 exerts a radial force directly outside on the free contact end of the annular element and the upper extension part of the outer extension of 51 exerts a radial force Force directly inside the free contact end of the annular member 6 when the capsule is disposed in the enclosing member of the beverage preparation device and the inserting member is closed by means of a Verschlusseiemen the Geiränkezuhereitungsvdrnhing. In this way, the free contact end is stitched by the support member 28, whereby a satisfactory seal is achieved.

For capsules where the seal structure 28 has protrusions §.0, oil and a plateau or trough 52 therebetween, as shown for example in Figs. 4A, 4B and 4F, the center of the plateau or trough 52 has circumferentially about the central axis of the capsule extends, preferably a diameter of 29 to 33 mm, better 30.0 to 31.4 mm and most preferably 30.3 to 31.0 mm. so that (as seen in radial cross section) the free end of the closure element of widely used and commercially available teaspoon preparation dishes (such as Citiz, Latusima, u. Maestria, Pixie, Inissia and Essenza) ends up exactly midway between the extensions 50, 51 and the squeezing effect is evenly distributed over the inner and outer extensions 50, 51. For performing squeezing in such devices, the distance between the extensions 50, 51 is preferably 0.8 to 1.25 mm.

Fig. 4G shows a seventh embodiment of a sealing member 28 on the outwardly extending flange 20 of a capsule according to the invention. As also shown in Fig. 2, the enclosing member 8 of the beverage delivering apparatus has an annular member 41 having a free contact end 30 of a plurality radially extending open grooves 40 aufessi. some of which are shown in Fig. 4G.

As in Figures 4A. 48 and 4F, the support member 28 has two spaced extensions 50 and 51, each of which is axially fixed by a bass section 2: 1, 23 of the outwardly extending flange 20, with the covers 14 attached to the base members 21, 23 a direction away from the lid 14 protrudes. In the example shown in FIG. 4F, a generally V-shaped plateau 52 having a round bottom is disposed between the two extensions 50 and 51.

A difference in comparison with the examples shown in Figs. 4A, 4B and 4F is that in the example shown in Fig. 4G, a first of the two extensions 51 is wider than the base parts 21, 23 of the outwardly extending flanges 20 second of the two extensions 50 imagines.

Another difference is that a bottom 58 of an annular trough o5 between the inner extension 51 and the side wall 16 of the Sasisteii 23, wherein attached to this base part, the lid is axially spaced. Preferably, the axial distance from the bottom 56 to the lid is less than the axial distance from the plateau 52 to the lid.

When the enclosing element 0 and / or the closure element 8 are moved towards each other with the sealing element 28 in between the capsule, the free contact end 30 of the annular element 41 can first come into contact with one of the two extensions S1 'and subsequently with the second one Both extensions come into contact (Fig, SA).

But then when the free contact end 38 of the annular member 41 comes into contact with the inner of the two extensions 51, the capsule is centered relative to enclosing element 8. Moreover, if the interior of the two extensions 51 is too far outward, for example, local due to non-circularity or non-centered position of the capsule, or generally due to the free contact area having a relatively small diameter, the free contact end will push that inner of the two extensions 51 radially inward. The outer of the two extensions is thereby entrained inwardly, so that a reliable solid sealing pressure is exerted on the outer of the two extensions 50, despite the relatively small deformability of this outer extension 51 due to its smaller height. The relatively high rigidity of the outer of the two extensions 50 allows a large contact force to be exerted while it is being deformed (Figure 58), where the relatively high conical pitch provides a particularly reliable seal with high pressure resistance. In addition, then the outer of the two extensions 50 is pressed outward, this load is counteracted by a hoop stress in the outer of the two extensions, which is equally distributed in the vicinity, so that a uniformly distributed sealing pressure is achieved.

As also shown in FIG. 5A, the free contact end 30 of the annular member 41 has an inner peripheral surface portion 71 which contacts the inner extension 51 and an outer peripheral surface portion 70 which contacts the outer extension 50. The radially extending open grooves 40 are irr? inner surface portion 71 lower than in the outer surface portion 70, or the grooves may be absent also on the outer surface portion 70. In this catfish, the smaller, relatively stiff outer extension 50 is pressed firmly against the relatively smooth outer surface portion 70 of the free contact end 30.

The distance between the two extensions 50 and 51 is such that ultimately (FIGS. 5A and 58) the free contact end 30 of the annular element 41 is squeezed between together-laying surfaces of the two extensions 50 and 51 when the inserting element is completely closed by means of the closure element ,

The plateau 52 is axially spaced from the lid 14. As shown by FIG. 58, it thereby allows the plateau 52 between the extensions 50, 51 to be displaced in the direction of travel of the free end 30 of the annular member 41 while the closing member 6 is closed, whereby the projections SO, 51 are pressed so that they are tilted and are rolled inwardly against the free end 30 of the annular member 41, while the enclosing element δ is closed. This increases the radial pressure which is exerted (in addition to the axial closing pressure) so that increased sealing pressure is available to provide a satisfactory seal.

More specifically, three stages can be distinguished when the trim member of the rim of FIGS. 4Θ, 5A, 58 and 8 is clamped between the annular member 41 of the disposable member 6 and the closure member 8.

In the first stage, contact between the annular member 41 and the support member 28, where necessary under the guidance of the inner extension 51 as described above, and an initial seal between a generally inwardly facing upper portion of the outer extension 50 and an outer surface portion 70 the free end 30 of the annular member 41 is made.

The radial location of this inward-pointing surface file of the outer appendage 50 and the local radius of curvature of the outer appendage 50 are arranged so that the contacting surfaces are nearly perpendicular to each other. This makes it possible for a very strong pinching effect to be achieved, so that a very small vertical force results in very large horizontal contact pressures. These large horizontal forces are exerted with little deformation of the outer extension 50 because the reaction forces generated by the surface artifact are retained primarily by hoop stress in the outer extension 50. In addition, such hoop stresses are generally independent of the remainder of the seal member 28, so that high rigidity for subjecting a large brace to flexibility can be combined to accommodate tolerances and misalignments of the capsule.

Because the bottom 56 of the annular trough, and hence the inner leg of the inner extension, protrude from the lid, friction and rigidity in the lateral directions are reduced, and the sealing member 28 has a high degree of flexibility to accommodate misalignment and tolerant effects without excessive distortion Dichtungstlichen. This also helps to maintain the nearly vertical orientations of the features, even when adaptation to failures and tolerances occurs through lateral displacement of the contact surface of the seal member 28.

In the second stage, a closure and further compression of the brewing chamber on the sealing ring is assisted by the build-up of hydraulic pressure. As the pressure force increases, the bottom 58 of the annular pressure 55 is forced downwardly by the mechanical and hydraulic loading and the entire sealing element is pivoted about an outer lower end 57 of the outer extension 50 until the bottom 58 of the annular trough 55 seals the lid touched (Fig, SB). This pivotal movement results in both a "stiff body" type movement of the guide element 28 and a deformation of the seal element shape. Both factors cause additional contact pressure to be transferred to the primary seal surface the contact area effectively adjoins the domain and allows adaptation to certain field locations and manufacturing tolerances.

In the third stage, further increasing the axial (here vertical) force causes further deformation of the seal member 28 (Figure 58). In the present embodiment, a reliable, highly leak-tight seal is achieved at a high pressure drop at a high contact pressure by the deformation of an inclined portion 58 which forms a transition from the outer extension 50 to the plateau, the portion 58 having a relatively straight section between more curved ones Such deformation results in a particularly high contact pressure along a narrow surface between the sealing element 28 and the outer surface portion 7o of the free end 30 of the annular element 41.

In order to achieve an effective seal, it is further advantageous that the outer extension 50 is squeezed between the outer and inner ridges 59, 80 of the annular element 41 and thereby deformed.

As shown in FIG. 5B, the inner projection 41 is bent open while the sealing element 8 is deformed so as to counteract withdrawal of the sealing element core to the bottom 58 of the annular element 55 and a corresponding contact pressure release.

In particular, in the context of the eventual mutual displacement of the annular member 41 and the support member 28, a particular problem is that most of the annular members have one or more bridges 61 (Fig, 6) between the outer and inner ridges 59, 68 of the annular member 41 have. Such bridges 81 constitute an interruption of an annular head space 62 into which the outer extension 50 is pinched during the third stage. Leakage, particularly at the transitions where the bridge begins and ends in the circumferential direction, is reduced: because the outer extension is shaped to roll radially outwardly and collapse, such that excess thief material is locally displaced away from the seal between the outer extension 50 and the annular element 41, thereby reducing interference with that seal and substantially continuous sealing along one seal Line that passes under the bridge 61. In the above description, the invention has been described by way of specific examples of embodiments of the invention. It ss! however, it will be apparent that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention as set forth in the appended claims.

Claims (81)

claims A capsule containing a substance for preparing a drinkable beverage by extracting and / or dissolving the substance by means of the supply of a fluid under pressure into the capsule, the capsule comprising an aluminum capsule body having a central capsule body axis, the aluminum capsule body having a bottom , a side wall and an outwardly extending flange, the capsule further comprising an aluminum lid secured to the outwardly extending flange, the lid hermetically sealing the capsule, the capsule further having a sealing member thereacross Extending flange comprises, to provide a fluid-tight contact with an enclosing element of a beverage preparation device, when the capsule is arranged in the enclosing element of the beverage preparation device and the enclosing element by means of a closure element of the beverage preparation Vorri such as an extraction plate of the beverage preparation device, so that the outwardly extending flange of the capsule and at least a portion of the sealing element of the capsule are sealingly engaged between the enclosing element and the closure element of the beverage preparation device, the enclosing element of the beverage preparation device an annular member having a central axis of the annular member and a free contact end, the free contact end of the annular member optionally being provided with a plurality of radially extending open grooves, characterized in that the sealing member is integral with the outwardly extending flange and at least one extension extending from the outwardly extending flange, wherein the at least one extension comprises an extension top and wherein the at least one Fortsat z is configured so that its extension top part exerts a radial force on the free contact end of the annular element when the capsule is arranged in the enclosing element of the beverage preparation device and the enclosing element is closed by means of the closure element of the beverage preparation device. 2. Capsule according to claim 1, wherein the sealing element has a further projection which projects from the outwardly extending flange, and a plateau between the two extensions, wherein the distance between the two extensions is such that the free contact end of the annular element is arranged between the two extensions, when the capsule is arranged in the enclosing element and while the enclosing element is closed by means of the closure element. 3. A capsule according to claim 2, wherein a first of the two projections of a base portion of the outwardly extending flange projects further than a second of the two extensions, wherein the lid is attached to the base part. 4. Capsule according to claim 3, wherein the first of the two extensions is a radially further inward lying of the two extensions. 5. A capsule according to any one of claims 2 to 4, wherein the sealing member has an annular trough between an inner of the projections and the side wall, wherein the annular trough has a bottom which axially from the base part, wherein attached to this base part of the lid, axially is. 6. Capsule according to one of claims 2 to 5, wherein the plateau is axially spaced from the lid. 7. Capsule according to claim 5 and 6, wherein the bottom of the annular trough is at a first axial distance from the lid and the plateau is at a second axial distance from the lid, wherein the second axial distance is greater than the first axial distance. 8. A capsule according to claim 7, wherein the sealing member is deformable such that, in use, the closure of the enclosing member deforms the side wall to cause the trough to be substantially brought into contact with the lid. 9. A capsule according to claim 7 or 8, wherein the inner of the two extensions is shaped so that it is bent when the sealing element is deformed, so that the plateau contacts the lid. 10. Capsule according to one of claims 2 to 9, wherein a radially outer of the two extensions has a greater rigidity against a radially outward deformation than the inner of the two extensions. 11. A capsule according to any one of claims 2 to 10, wherein a first of the two extensions has an extreme upper end which extends around the capsule axis in a diameter of 29.2 to 29.8 mm, and wherein a second of the two extensions a has extreme upper end, which extends around the capsule axis in a diameter of 31.9 to 32.4 mm. A capsule according to any one of claims 2 to 11, wherein an outer one of the two extensions has a generally inwardly facing surface portion which extends at an included angle of less than 8 ° and preferably less than 6 ° or less than 4 ° to the capsule body axis , A capsule according to any one of claims 2 to 12, wherein the distance between the two projections is such that the free contact end of the annular member is contacted by the two projections when the capsule is disposed in the enclosing member and the enclosing member by means of Closing element is closed. A capsule according to any one of claims 2 to 13, wherein the two spaced extensions and the plateau are arranged so that the free contact end of the annular element is contacted by the plateau when the capsule is disposed in the enclosing element and the enclosing element the closure element is closed. A capsule according to any one of claims 2 to 14, wherein the capsule comprises a bearing for the enclosing member when the capsule is disposed in the enclosing member and the enclosing member is closed by the closure member, the bearing forming at least part of the free contact end enclosing the annular member and the bearing is formed by the two projections and the plateau therebetween. 16. A capsule according to any one of claims 2 to 15, wherein seen in cross-section along a plane through the capsule body axis, the plateau has an inclined portion which forms a transition to the outer of the two extensions, wherein the inclined portion has a relatively straight portion between curved portions represents. A capsule according to claim 16, wherein the inclined portion is oriented at an included angle of at least 10 °, and more preferably at least 20 ° and at most 60 °, and more preferably at most 50 °, relative to the lid. 18. A capsule according to any one of claims 2 to 15, wherein the plateau is substantially flat. 19. Capsule according to one of claims 2 to 15, wherein the plateau comprises a curved part. 20. Capsule according to claim 19, wherein the plateau is V-shaped. 21. A capsule according to any one of claims 2 to 20, wherein an outer one of the two extensions is shaped to be rolled radially outwards and to collapse when compressed in the axial direction, while having an outwardly facing surface of a free end the annular element is in contact, which is arranged between the two extensions. 22. A capsule according to any one of claims 2 to 21, wherein a transition from the outer of the two extensions to a radially outwardly extending flange of a base member to which the lid is attached, an inner radius of less than 0.15 mm and preferably of less than 0.12 mm, with a radially outer wall of the outer of the two extensions being oriented at an included angle relative to the capsule body axis of less than 8 ° and more preferably less than 6 °. A capsule according to any one of the preceding claims wherein the capsule contains an extractable product as a substance for the preparation of a drinkable beverage, the extractable product preferably being from 5 to 20 grams, preferably from 5 to 10 grams, more preferably from 5 to 7 grams of roast and ground Coffee is. 24. Capsule according to one of the preceding claims, wherein the outer diameter of the outwardly extending flange of the capsule is greater than the diameter of the bottom of the capsule. The capsule of claim 24, wherein the outside diameter of the outwardly extending flange is about 37.1 mm and the diameter of the bottom of the capsule is about 23.3 mm. A capsule according to any one of the preceding claims, wherein the thickness of the aluminum capsule body 12 is such that it is easily deformable when the capsule is disposed in the enclosing member of the beverage preparation device and the enclosing member is closed by means of the closure member of the beverage preparation device, preferably the thickness of the aluminum capsule body is between 20 and 200 pm, preferably 100 pm. 27. Capsule according to one of the preceding claims, wherein the thickness of the aluminum lid 15 to 65 pm, preferably 30 to 45 pm, and more preferably 39 pm. 28. Capsule according to one of the preceding claims, wherein the wall thickness of the aluminum cover is smaller than the wall thickness of the aluminum capsule body. A capsule according to any one of the preceding claims, wherein the aluminum lid is arranged on a closure member of the beverage preparation device, such as an extraction plate of the beverage preparation device, so as to be ruptured under the influence of fluid pressure in the capsule. A capsule according to any one of the preceding claims, wherein the sidewall of the aluminum capsule body has a free end opposite the bottom, the outwardly extending flange extending from the free end of the sidewall in a direction at least substantially transverse to the central capsule body axis. 31. A capsule according to claim 30, wherein the outwardly extending flange comprises a curled outer edge. The capsule of claim 31, wherein an inner edge of the curled outer edge of the outwardly extending flange has a radius about the central capsule body axis of at least 32 mm. A capsule according to claim 31 or 32, wherein the sealing member is disposed between the free end of the side wall of the aluminum capsule body and an inner edge of the curled outer edge of the outwardly extending flange. A capsule according to claim 31, 32 or 33, wherein the curled outer edge of the outwardly extending flange has a largest dimension of about 1.2 mm. A capsule according to any one of claims 33 to 34, wherein the inner diameter of the free end of the side wall of the aluminum capsule body is about 29.5 mm. A capsule according to any one of claims 33 to 35, wherein the distance between the free end of the side wall of the aluminum capsule body and an outermost edge of the outwardly extending flange is about 3.8 mm. A capsule according to any one of the preceding claims, wherein a height of the aluminum capsule body is about 28.4 mm. A capsule according to any one of the preceding claims, wherein the aluminum capsule body is frusto-conical, the sidewall of the aluminum capsule body having a line transverse to the central capsule body axis preferably including an angle of approximately 97.5 °. A capsule according to any one of the preceding claims, wherein the bottom of the aluminum capsule body has a largest inner diameter of about 23.3 mm. A capsule according to claim 39, wherein the bottom of the aluminum capsule body is frusto-conical, preferably having a bottom height of about 4.0 mm, and when the bottom further has a generally flat central portion opposite the lid, which has a diameter of about 8, 3 mm. A capsule according to any one of the preceding claims, wherein the height of the sealing member which is first to be contacted by the free end of the enclosing member when the enclosing member is closed is at least about 0.1 mm, preferably at least 0.2 mm and more preferably at least 0.8 mm and at most 3 mm, more preferably at most 2 mm, and most preferably at most 1.2 mm. 42. Capsule according to one of the preceding claims, wherein the capsule comprises an inner surface and on the inner surface of at least the side wall of the capsule, an inner coating is provided. A capsule according to claim 42, wherein the capsule aluminum lid is secured to the outwardly extending flange by means of a sealing varnish, the inner coating being of the same material as the sealing varnish. 44. Capsule according to claim 42 or 43, wherein the sealing element is free of an inner coating. 45. Capsule according to one of the preceding claims, wherein the capsule has an outer surface, wherein on the outer surface of the capsule, a color coat is provided. 46. Capsule according to claim 45, wherein an outer coating is provided on the outer surface of the paint. 47. The capsule according to claim 45 or 46, wherein the sealing element is free of a colored lacquer. 48. Capsule according to one of the preceding claims, wherein the at least one extension comprises a projection side wall, which is inclined relative to the outwardly extending flange of the aluminum capsule body, wherein the extension side wall is configured so that it is easily deformed, if the capsule is arranged in the enclosing element of the beverage preparation device and the enclosing element is closed by means of the closure element of the beverage preparation device. The capsule of claim 48, wherein the distance between the projection and the side wall of the aluminum capsule body is such that the free contact end of the annular member is contacted by the extension and side wall of the aluminum capsule body when the capsule is disposed in the enclosing member of the beverage preparation device and the enclosing element is closed by means of the closure element of the beverage preparation device. A capsule according to any one of the preceding claims, wherein the sealing member comprises, in addition to the at least one projection projecting from the outwardly extending flange, a plateau between the upper end of the extension and the side wall of the aluminum capsule body. 51. A capsule according to claim 50, wherein a bearing is formed by the extension, the plateau and the side wall of the aluminum capsule body, wherein the distance between the extension and the side wall is such that the free contact end of the annular element of the extension and the side wall of the Enclosed aluminum capsule body when the capsule is arranged in the enclosing element of the beverage preparation device and the enclosing element is closed by means of the closure element of the beverage preparation device. 52. A capsule according to claim 49 or 50, wherein the extension, the side wall of the aluminum capsule body and the plateau can be arranged so that the free contact end of the annular element is contacted by the plateau when the capsule is disposed in the enclosing element of the beverage preparation device and the enclosing element is closed by means of the closure element of the beverage preparation device. 53. The capsule according to claim 1, wherein the sealing structure is deformable such that the bearing fluid-tightly contacts at least part of the free contact end of the annular element when in use the maximum fluid pressure in the enclosing element of the beverage preparation device is in the range from 6 to 20 bar. preferably between 12 and 18 bar. 54. The capsule according to claim 1, wherein the sealing structure is deformable such that the bearing fluid-tightly contacts at least a portion of the free contact end of the annular element when, during brewing, the free contact end of the annular element exerts a force F2 on the sealing structure of the capsule. when F2 is in the range of 500 to 1500 N, preferably in the range of 750 to 1250 N, when the fluid pressure P2 in the enclosing element outside the capsule is in the range of 6 to 20 bar, preferably 12 to 18 bar. A capsule according to any one of the preceding claims, wherein the sealing structure is deformable so that the bearing fluidly contacts at least a portion of the free contact end of the annular member when, in use, before or at the beginning of brewing, the free contact end of the annular member has a force F1 on the sealing structure of the capsule, wherein the force F1 in the range of 30 to 150 N, preferably in the range of 40 to 150 N, more preferably 50 to 100 N, when the fluid pressure P1 in the enclosing element of the beverage preparation device outside the capsule in Range of 0.1 to 4 bar, preferably between 0.1 and 1 bar. 56. The capsule of claim 1, wherein the seal structure is deformable so that the bearing fluid-tightly contacts at least a portion of the free contact end of the annular member when the free contact end of the annular member urged against the seal structure has a plurality of radially extending ones has open grooves which are equally spaced in a circumferential sense of the free contact end of the annular member relative to each other. 57. Capsule according to one of the preceding claims, wherein the sealing structure is deformable, so that the bearing fluid-tightly contacted at least a portion of the free contact end of the annular element, when the maximum width of the grooves each 0.9 to 1.1 mm, preferably 0.95 is more preferably 0.98 to 1.02 mm, wherein a maximum height of each groove in an axial direction of the enclosing member of the beverage preparation device is 0.01 to 0.09 mm, preferably 0.03 to 0, 07 mm, more preferably 0.045 to 0.055 mm, most preferably 0.05 mm, and wherein the number of grooves is 90 to 110, preferably 96. 58. Capsule according to one of the preceding claims, wherein the sealing structure and the rest of the capsule body are made of the same sheet metal material. A system for preparing a drinkable beverage from a capsule using a fluid supplied under pressure into the capsule, comprising: a beverage preparation device comprising an enclosing member for receiving the capsule, the enclosing member being a fluid injection means for supplying fluid pressurized in the capsule, the beverage preparation device further comprising a closure member, such as an extraction plate, for closing the enclosing member of the beverage preparation device, the enclosing member of the beverage preparation apparatus further comprising an annular member having a central axis of the annular member and a free contact end, wherein the free contact end of the annular member is optionally provided with a plurality of radially extending open grooves; and a capsule according to any one of the preceding claims. 60. The system of claim 59, wherein the free contact end of the annular member has a first circumferential surface portion contacting the first extension when the capsule is disposed in the enclosing member and while the enclosing member is closed by the closure member and a second circumferential one Surface portion, the second extension contacted when the capsule is disposed in the enclosing member and while the enclosing member is closed by the closure member, wherein the radially extending open grooves in the first surface part are deeper than in the second surface part or the grooves in the second surface part absent are. The system of claim 59 or 60, wherein the capsule is a capsule according to any one of claims 2 to 22, and wherein the enclosing member and the extensions are arranged so that when the enclosing member and / or the closure member are moved toward each other with the sealing member in between, the free contact end of the annular element may first come into contact with the first of the two extensions and subsequently contact the second of the two extensions. 62. The system of claim 59 to 61, wherein the capsule is a capsule according to claim 16 or 17, and wherein the annular member is arranged for deformation of the inclined portion. 63. The system of claim 59, wherein the annular member has outer and inner ridges, and wherein the outer of the two extensions is arranged to deform between the outer and inner ridges when the sealing member intervenes between the enclosing member and is clamped the closure element. The system of any one of claims 59 to 63, wherein the capsule is a capsule according to claim 21 or 22, and wherein the annular member has one or more bridges between the outer and inner ridges, the or each bridge interrupting an annular space between the outer and the inner ridge. 65. A system according to any one of claims 59 to 64, wherein in use the maximum fluid pressure in the enclosing element of the beverage preparation device is in the range of 6 to 20 bar, preferably 12 to 18 bar. 66. The system of claim 59, wherein the system is arranged such that in use during brewing, a free end of the enclosing member of the beverage preparation device exerts a force F2 on the sealing member of the capsule to provide a fluid tight contact between itself to provide outwardly extending flange of the capsule and the enclosing element of the beverage preparation device, wherein F2 is in the range of 500 to 1500 N, preferably in the range of 750 to 1250 N, when the fluid pressure P2 in the enclosing element of the beverage preparation device outside the capsule is in the range of 6 to 20 bar, preferably between 12 and 18 bar. 67. A system according to any of claims 59 to 66, wherein the system is arranged such that in use prior to or at the start of brewing, a free end of the enclosing member of the beverage preparation device exerts a force F1 on the sealing member of the capsule to make a fluid tight contact between the outwardly extending flange of the capsule and the enclosing member of the beverage preparation device, wherein F1 is in the range of 30 to 150 N, preferably in the range of 40 to 150 N, more preferably 50 to 100 N, when the fluid pressure P1 in enclosing element of the beverage preparation device outside the capsule in the range of 0.1 to 4 bar, preferably between 0.1 and 1 bar. 68. The system of claim 59, wherein the plurality of radially extending open grooves are uniformly spaced relative to each other in a tangential direction of the free contact end of the annular member of the beverage preparation device. 69. System according to claim 68, wherein the maximum width of the grooves is 0.9 to 1.1 mm, preferably 0.95 to 1.05 mm, more preferably 0.98 to 1.02 mm, wherein a maximum height of a each groove in an axial direction of the enclosing member of the beverage preparation device is 0.01 to 0.09 mm, preferably 0.03 to 0.07 mm, more preferably 0.045 to 0.055 mm, most preferably 0.05 mm, and the number of Grooves 90 to 110, preferably 96 and optionally wherein the radial width of the free contact end at the location of the grooves 0.05 to 0.9 mm, preferably 0.2 to 0.7 mm and more preferably 0.3 to 0.55 mm. 70. The system of claim 59, wherein during use, when the closure element of the beverage preparation device closes the enclosing element of the beverage preparation device, at least the free contact end of the enclosing element of the beverage preparation device relative to the enclosing element under the effect of the pressure of the fluid in the enclosing element of the beverage preparation device can move towards the closure element of the beverage preparation device to apply the maximum force between the flange of the capsule and the free end of the enclosing element of the beverage preparation device, optionally the enclosing element comprises a first part and a second part, wherein the second part comprises the free contact end of the enclosing member, the second part being movable relative to the first part between a first and a second position where wherein the second part is capable of moving from the first position to the second position in the direction of the closure member under the influence of fluid pressure in the enclosing member, optionally obtaining the force F1 according to claim 67 when the second part is in the first position, with a fluid pressure P1 in the enclosing member as recited in claim 67, and optionally the force F2 according to claim 66 is achieved when the second part is moved to the second position under the influence of the fluid pressure P2 in the enclosing member as in Claim 66 specified. 71. The system of claim 59, wherein during use, when the closure element of the beverage preparation device closes the enclosing element of the beverage preparation device, the enclosing element of the beverage preparation device relative to the closure element of the beverage preparation device becomes under the effect of the pressure of the fluid in the enclosure Move element of the beverage preparation device to the closure element of the beverage preparation device to apply the maximum force between the flange of the capsule and the free end of the enclosing element of the beverage preparation device. 72. The use of a capsule according to any one of claims 1 to 58 in a beverage preparation device comprising an enclosing member for receiving the capsule, wherein the enclosing member comprises a fluid injection means for supplying fluid under pressure into the capsule, wherein the beverage preparation device further comprises a closure element, such as for example, an extraction plate for closing the enclosing member of the beverage preparation apparatus, the enclosing member of the beverage preparation apparatus further comprising an annular member having a central axis of the annular member and a free contact end, the free contact end of the annular member optionally having a plurality of radially extending open grooves is equipped; wherein the capsule contains a substance for the preparation of a drinkable beverage by extracting and / or dissolving the substance by means of the fluid supplied under pressure by the fluid injection means of the beverage preparation device into the capsule, wherein the capsule comprises an aluminum capsule body having a central capsule body axis, wherein the An aluminum capsule body is provided with a bottom, a sidewall and an outwardly extending flange, the capsule further comprising an aluminum lid secured to the outwardly extending flange, the lid hermetically sealing the capsule, the capsule further comprising a sealing member which is integral with the outwardly extending flange to provide a fluid tight contact with the enclosing member of the beverage preparation device when the capsule is disposed in the enclosing member of the beverage preparation device, and the like and the enclosing member is closed by means of the closure member of the beverage preparation device such that the outwardly extending flange of the capsule and at least a portion of the sealing member of the capsule are sealingly engaged between the enclosing member and the closure member of the beverage preparation device. Use according to claim 72, wherein in use the maximum fluid pressure in the enclosing element of the beverage preparation device is in the range of 6 to 20 bar, preferably 12 to 18 bar. Use according to claim 72 or 73, wherein, in use during brewing, a free end of the enclosing element of the beverage preparation device exerts a force F2 on the sealing element of the capsule to provide a fluid tight contact between the outwardly extending flange of the capsule and the enclosing flange Provide element of the beverage preparation device, wherein F2 is in the range of 500 to 1500 N, preferably in the range of 750 to 1250 N, when the fluid pressure P2 in the enclosing element of the beverage preparation device outside the capsule in the range of 6 to 20 bar, preferably between 12 and 18 bar and wherein the fluid-tight contact is present. Use according to any one of claims 72 to 74, wherein in use prior to or at the start of brewing, a free end of the enclosing element of the beverage preparation device exerts a force F1 on the sealing element of the capsule to provide a fluid tight contact between the outwardly extending flange the capsule and the enclosing element of the beverage preparation device, wherein F1 in the range of 30 to 150 N, preferably in the range of 40 to 150 N, more preferably 50 to 100 N, when the fluid pressure P1 in the enclosing element of the beverage preparation device outside the capsule in the range of 0.1 to 4 bar, preferably between 0.1 and 1 bar and wherein the fluid-tight contact is present. 76. Use according to any one of claims 72 to 75, wherein the plurality of radially extending open grooves in a tangential direction of the free contact end of the annular member of the beverage preparation device is uniformly spaced relative to each other. 77. Use according to any one of claims 72 to 76, wherein the capsule is a capsule according to any one of claims 2 to 22 and wherein, when the enclosing member and / or the closure member are moved towards each other with the sealing member of the capsule therebetween free contact end of the annular element may first come into contact with a first of the two extensions and subsequently comes into contact with the second of the two extensions. But then when the free contact end of the annular member comes into contact with the inner of the two extensions, the capsule is centered relative to the enclosing element or pressed radially inward, wherein the outer of the two extensions is entrained. 78. Use according to any one of claims 72 to 77, wherein the capsule is a capsule according to any one of claims 2 to 22 and wherein the annular member pushes an outer of the two projections outwards. 79. Use according to any one of claims 72 to 78, wherein the capsule is a capsule according to any one of claims 2 to 22 and wherein the plateau is axially spaced from the lid, and wherein the plateau between the extensions is axially spaced from the lid, and Plateau between the extensions of the annular element is displaced while the enclosing element is closed, whereby the extensions are pressed so that they are tilted and rolled inwards against the free end of the annular element. 80. Use according to any one of claims 72 to 79, wherein the capsule is a capsule according to one of claims 5 to 9 and wherein the bottom of the annular trough is pressed by the annular member against the lid. 81. Use according to any one of claims 72 to 80, wherein the system is a system according to claim 64 and wherein the outer of the two extensions curls radially outward and collapses where it is compressed by the bridge.