Cap and its use

Abstract

The invention relates to a closure cap for beverage bottles. In particular, the invention relates to a closure cap with a chamber that can be opened immediately before consumption. The closure cap comprises a capsule (1) with a closed upper side (2), a circumferential wall (3) and a downwardly open lower side (4) which can be closed or closed with a film (5). The upper side (2) of the capsule (1) has, on an outer side, a pressure surface (6) intended for actuation with a finger. Adjoining said pressure surface is a substantially planar membrane (7) which can be deformed in the axial direction by pressure on this pressure surface and which, in turn, adjoins an upper edge of the wall (3). The upper side (2) has, on an inner side, a stamp (8) which extends in the direction of the lower side (4) as far as the film (5) and has a plurality of flanks (9). The stamp (8) further comprises at least two styli (10) which are each arranged between the flanks (9) and spaced apart from them. The invention also relates to a method for using this closure cap.

Description

Introduction

[0001] The invention relates to a closure cap for beverage bottles and its use. In particular, the invention relates to a closure cap with a chamber that can be opened immediately before consumption. State of the art and disadvantages

[0002] Caps for bottles and other containers are well known. They serve to seal the container after it has been filled and can be opened manually without the need for tools before removing the contents. Such caps are most commonly designed as screw caps, but snap-on or push-on caps are also known.

[0003] Also known are closure caps that have a fillable cavity, hereinafter referred to as a chamber. This cavity can accommodate substances that are to be stored separately from the liquid in the container and added to the liquid only shortly before consumption. The prior art includes various designs that allow the chamber to be opened without the use of tools. For example, by turning the closure cap, which is then designed as a screw cap, a mechanism can be activated that cuts or shears open a separating membrane that separates the chamber from the bottle contents. One such design is disclosed, for example, in document DE 10 2008 019 222 A1.In other designs, opening is achieved by manually pressing a push button located on the outside of the cap, which has a plunger that pierces the membrane located on the opposite inside of the chamber.

[0004] Such a construction is known from patent application WO 2020 / 064893 A1. The closure cap shown therein comprises a capsule sealed with a rigid closure disc, a circumferential capsule wall, and a depressible push button that deforms a capsule lid. It further comprises a plunger arranged on the inside of the capsule lid with expanding legs, which taper into elastically flexible feet at their ends.The profile of the capsule lid is designed with multiple corrugations in the radial direction so that the pressing down can take place in two phases, whereby in the first phase - after a first pressure force threshold has been exceeded - the punch and feet come into contact with the closure disc and pre-tension it, whereupon in the second phase - after a second, higher pressure force threshold has been exceeded - the punch breaks open the closure disc, while the spreading legs are intended to ensure that the segments of the closure disc formed by the breaking open can be swung open safely.

[0005] The disadvantage of this solution is its relatively high complexity; this particularly applies to the precise manufacturing of the corrugated capsule lid, which provides two pressure phases, as well as the connected expansion legs with elastic feet that enable precise movement. The design of the multi-layer closure disc, which contains precisely shaped notches, also places high demands on the manufacturing technology. Task of the invention and solution

[0006] The invention is therefore based on the object of providing a fillable closure cap of the type mentioned at the outset which avoids the disadvantages of the prior art.

[0007] The object is achieved by a closure cap according to claim 1 and a method for using a closure cap according to independent claim 14. Advantageous embodiments can be found in the respective dependent subclaims, the following description and the figures. Description

[0008] The closure cap according to the invention is first described below. This is followed by a description of the method according to the invention for using the same.

[0009] It should be noted that directions such as "top" or "bottom" and the corresponding sides of the closure cap are arbitrarily chosen and are based solely on the typical position of the closure cap when positioned on or in the opening of a container. "Inside" or "inside" refers to surfaces in or directions into the interior of the capsule; "outside" and "outside" refer to the sides accessible from the capsule's surroundings or directions pointing into this surroundings. The longitudinal axis or longitudinal direction runs in the center of the capsule between its top and bottom.

[0010] The fillable cap is designed to close a container intended to hold a liquid, particularly one suitable for consumption. The container can be a plastic or glass bottle. The contents of the cap can, for example, be a supplementary ingredient of a beverage, which is intended to come into contact with the other ingredients in the container only immediately before consumption.

[0011] The closure cap comprises a liquid-tight capsule intended for filling with said supplementary component, which is typically liquid or granular. The capsule has a closed top, a circumferential wall, and a bottom that is open at the bottom and can be sealed or closed with a film. Thus, when the film is peripherally connected to the bottom, a liquid-tight container is provided. The container has a filling volume of 0.2 ml to 10 ml, preferably 0.5 ml to 5 ml, and particularly preferably 1 ± 0.2 ml.

[0012] The top of the capsule has a pressure surface on its outside, designed for finger activation and appropriately dimensioned. This pressure surface is surrounded by a substantially flat (more precisely: comprising flat surfaces or composed of flat surfaces) membrane, which can be deformed in the axial direction by applying pressure to this pressure surface.

[0013] The term "membrane" indicates that this component is actually deformable with the forces typically exerted by a finger (e.g., 1 N to 150 N, preferably 10 N to 80 N, and particularly preferably 47.5 N ± 7.5 N); dimensioning the thickness of this membrane poses no difficulties for the person skilled in the art. Preferably, the membrane is as thin as possible to keep the actuation forces low. At the same time, the thickness should be selected to prevent cracking upon actuation. A thickness of, for example, 0.15 to 0.5 mm has proven advantageous.

[0014] The term "flat" here means that the profile of the diaphragm, from its outer edge to a point closer to the center (namely, the edge of the pressure surface), or even to the center (if the pressure surface is part of the diaphragm), essentially has no undulating or other non-straight geometry. It is important to note that this characteristic refers only to a section from the edge to a point closer to the center. Depending on the design, this second point can also be located in the center, i.e., at the intersection point between the diaphragm and the capsule's longitudinal axis. Since the diaphragm is essentially rotationally symmetrical to the longitudinal axis, it is clear that on the side of the diaphragm opposite said longitudinal axis, the described section of its profile is precisely mirror-symmetrical. For example, if the profile rises in a straight line from the edge to the center, it falls again in an equally straight line on the opposite side."Flat" therefore does not mean that the membrane lies essentially in one "plane." Rather, it can have a conical or truncated cone shape; these bodies therefore have lateral surfaces that are "flat" within the meaning of this definition.

[0015] The membrane, in turn, is connected circumferentially to the upper edge of the wall. Thus, the membrane connects the upper edge of the wall to the pressure surface in an elastically or plastically deformable manner.

[0016] The top of the capsule also features a multi-flanked plunger on its (inward-facing) inner side. It extends toward the bottom to the foil (or to the level where the inward-facing side of the foil is located). The vertical length of the plunger is dimensioned such that, in a resting position (with the membrane undeflected), it extends approximately to the foil, allowing the foil to rest on it if excess pressure builds up inside the container, which then also exerts pressure on the foil and could cause undesirable damage. The plunger also protects the foil from damage during transport and further processing of the closure cap.

[0017] Furthermore, the top of the capsule comprises at least two styli, each arranged between the flanks and spaced apart from them. As will be explained below, the styli serve to assist in the secure opening of the pierced film and, in particular, to ensure that it remains open. The capsule preferably has four styli.

[0018] The invention thus avoids the disadvantages known from the prior art.

[0019] The closure cap of the type according to the invention is relatively simple in construction and is therefore easy to manufacture; complex shapes such as a multi-corrugated capsule lid, precisely manufactured elastic feet on the spreading legs, or a multi-layer closure disc with precisely formed notches are eliminated.

[0020] Various embodiments of the invention are described in more detail below.

[0021] According to one embodiment, the ends of the flanks facing the film are tapered. This means that they do not have a flat end substantially parallel to the plane of the film, but are designed like a cutting edge. This can be formed by a first wall running perpendicular to the plane of the film and thus parallel to the longitudinal axis, and a second wall at a very acute angle to the longitudinal axis, or both walls can have a very acute angle (e.g., 0.1, 0.5, 1, 2, 3, 5, or 10°) to the longitudinal axis.

[0022] Tapered flanks offer the advantage that when the pressure between the flank and the foil increases, the foil is easier to pierce. This reduces the pressure required to pierce the foil, making it easier to open the capsule.

[0023] According to a further embodiment, the stamp has a raised portion in the central region of its lower end projecting beyond the ends of the flanks. This raised portion serves as a support surface running essentially parallel to the plane of the film. If the film is pressed toward the capsule—for example, due to excess pressure in the vessel—and deforms slightly in the process, it initially rests exclusively on the raised portion, so that the film is not damaged. Only when additional (deliberate) pressure is applied by the user does the stamp press against the film from the inside, so that the film is initially prestressed and finally severed by the flanks of the stamp. The raised portion has a width of 1 mm to 6 mm (depending on the geometry of the stamp), preferably 2 mm to 5 mm (2 mm to 5 mm), and particularly preferably 3 to 4 mm (3 mm to 4 mm). It can be rectangular / square, but preferably round.

[0024] The elevation thus serves to protect the film from unwanted opening.

[0025] According to another embodiment, the styli are designed to taper to a point. The styli's primary function is to keep the foil open once it has been pierced by the flanks. Accordingly, it must be ensured that the styli do not slip on the inside of the foil. This is supported by the aforementioned shape. "Pointed" means that the cutting angle is between 0.5° and 30°, preferably between 1° and 20°, and particularly preferably between 5° and 10°.

[0026] According to a preferred embodiment of the closure cap, at least one inner radius is arranged at the transition between the membrane and the wall. Optionally, an outer radius is also present, which is then preferably larger by the thickness of the membrane. This radius has the advantage that the deflection of the rather delicate membrane is easier and better controlled, and cracking of the membrane is also prevented. The inner radius has a value of 0.1 mm to 2 mm, preferably 0.2 mm to 1.5 mm, and particularly preferably 0.5 mm ± 0.05 mm.

[0027] According to a particularly preferred embodiment, the radius reduces the thickness of the wall on its inner side and merges tangentially into the inner side of the membrane. In other words, the radius causes the inner side of the wall to have a recess, thereby reducing its thickness, measured from the inner side. The radius is dimensioned such that, just as the membrane thickness is reached, it also merges into the membrane and thus runs tangentially to its inner side. This leads to a particularly gentle force transfer between the thinner membrane and the thicker wall, thus preventing overloading.

[0028] According to one embodiment, in the unactuated state of the closure cap, the angle between the longitudinal axis of the capsule on the one hand and the section of the inside of the membrane running from the upper edge of the wall to the center on the other hand is an acute angle, i.e. less than 90°.

[0029] This angle is therefore determined between the longitudinal axis (first leg) and the diaphragm, with the second leg running from the point where the longitudinal axis intersects the diaphragm (actually or imaginarily) to the outer edge of the diaphragm. If the angle is 90°, the entire diaphragm lies in one plane. If the angle is smaller, which is preferred, the diaphragm forms a cone (lateral surface ends in a point, pressure surface is part of the diaphragm) or a truncated cone (lateral surface ends in a surface that can, in particular, provide the pressure surface). The angle with the diaphragm unactuated is between 0° and 90°, preferably between 20° and 70°, and particularly preferably between 45° ± 10°. In the actuated position, the angle is significantly larger and increases by a value between 5° and 120°, preferably between 20° and 100°, and particularly preferably between 75° ± 10°, corresponding to a total value of 120° ± 10°.

[0030] The advantage of a conical or tapered diaphragm is that it provides a spring with one stable and one metastable state, or even two stable states. At rest, the diaphragm is in the first stable state. When pressed, the metastable state is reached or passed through; the foil is opened by means of the flanks. Depending on the design, the now flat or even reversely curved diaphragm (angle greater than 90°) can remain independently in this activated position (second stable state, the foil is held permanently open), or it springs back to its original position (rest state) when the pressure force is removed. The latter can be desirable if the possibly sharp-edged flanks and styli are to be retracted into the capsule after the contents of the capsule have been emptied, for example, to prevent injuries. A design with two stable states is preferred.

[0031] According to one embodiment, the central region of the upper side, which carries the pressure surface on the outside and the plunger on the inside, is axially offset outward relative to the diaphragm. This means that there is an outwardly projecting protrusion in the center of the upper side that projects beyond the rest of the diaphragm.

[0032] The advantage lies in providing a clearly visible actuation surface, which is preferably thicker than the membrane. Furthermore, the membrane is offset slightly toward the inside of the capsule, thus protecting it from accidental contact and damage.

[0033] According to one embodiment, the pressure surface, unlike the membrane, retains its shape when pressure is applied by a finger. This is achieved by making the pressure surface essentially rigid, meaning it does not deform upon actuation. This can be achieved by choosing a stiffer material and / or by using structural measures (ribs or similar), and / or by increasing the material thickness.

[0034] This measure also serves to protect the membrane; it does not preclude the design of the membrane as a stable / metastable spring as described above.

[0035] According to a preferred embodiment, the styluses are arranged on the inside of the diaphragm in such a way that they can be pivoted radially outwards away from the stamp when the pressure surface is pressed due to the increase in the angle between the diaphragm and the longitudinal axis. As described, the angle increases increasingly when the pressure surface is pressed. The inside of the diaphragm, which is initially tilted towards the longitudinal axis or runs perpendicular to it, thus tilts increasingly away from the longitudinal axis. The normal to the inside of the diaphragm therefore also points further and further in front of the longitudinal axis. An elongated component attached to the underside of the diaphragm therefore not only moves slightly downwards with the diaphragm, but also tilts away from the longitudinal axis together with the inside of the diaphragm. The longer the component, the greater the radial movement of its downward-pointing tip.

[0036] In this case, this movement leads to the burst or punctured film spreading and stopping, so that the contents of the capsule can be emptied more easily into the vessel.

[0037] According to another preferred embodiment, the flanks of the plunger extend beyond the stylus toward the underside of the capsule. This means that the distance between the foil and the plunger is smaller than the distance between the foil and the stylus.

[0038] This ensures that if the foil is subjected to pressure due to excess pressure in the container or due to inadvertently pressing down the pressure surface (for example, when carelessly grasping the container for transport), the foil is not accidentally damaged by the stylus. The central protrusion described above is particularly preferred on the punch to further minimize the risk of accidental bursting (particularly due to inadvertent contact with the pointed flanks).

[0039] According to one embodiment, the closure cap comprises a screw cap of conventional design surrounding the capsule, for example, according to standard DIN 55406:2015-12, which provides a gap towards the wall of the capsule in which a screw thread of the container can be accommodated. This means that the gap is dimensioned such that the capsule does not hinder screwing the closure cap into the opening of the container, which accordingly limits the maximum diameter. A larger internal volume of the capsule can therefore only be achieved by extending it, possibly beyond the lower edge of the screw cap. A typical maximum outer diameter of the capsule is 40 mm, and the maximum height of the entire screw cap is preferably 25 mm.

[0040] Preferably, when the cap is in the unactuated state, the membrane with its pressure surface is arranged within the envelope of the screw cap. In other words, the membrane and, in particular, the pressure surface are "recessed" into the screw cap.

[0041] This prevents accidental activation, for example when the container is turned upside down or when objects are placed on the screw cap.

[0042] The following explains the use of a closure cap as described above. Accordingly, the following steps are performed to empty the closure cap into the interior of a container located below it and detachably connected to it: - Applying a pressure force to the pressure surface; this is usually done by the finger of a person using the cap. - Essentially stepless, increasing axial lowering of the pressure surface toward the underside with the foil, with a likewise increasing deformation of the membrane; the lowering therefore results from the application of the pressure force. Due to the flat shape of the membrane, the lowering also occurs essentially stepless. - Contact of the stamp with the foil; by further lowering the stamp finally reaches the foil. - simultaneous or delayed contact of the flanks with the foil; depending on whether the stamp extends beyond the flanks or not, these components touch the foil one after the other or simultaneously. - simultaneous or delayed contact of the stylus with the foil; depending on whether the flanks protrude beyond the stylus or not, these components also touch the foil one after the other or simultaneously.

[0043] As a result, the foil is pre-tensioned by the plunger and severed simultaneously or with a delay by the flanks and / or the styluses, allowing the contents of the capsule to empty into the vessel. To avoid repetition, please refer to the explanations above.

[0044] According to a preferred embodiment, in which the pressure surface is preferably designed to be substantially rigid, the angle between the inside of the membrane and the longitudinal axis increases as the upper side is increasingly lowered, whereby the stylus pivots radially outward away from the plunger when pressing the pressure surface due to the increasing increase in the angle of the membrane to the longitudinal axis, while contacting the film. This assists in tearing and, in particular, also keeps the film open, which improves emptying of the capsule's contents.

[0045] According to another embodiment, the diaphragm returns to a resting position after the pressure force is removed. This is achieved by a design with a stable and a metastable state of the spring provided by the diaphragm (see above).

[0046] This ensures that any sharp edges of the flanks and burins are retracted into the interior of the capsule to prevent injury when the cap is unscrewed from the container. This can be particularly advantageous in the increasingly popular cases of so-called "tethered caps" according to Directive (EU) 2019 / 904, where the design requires that the screw cap remains attached to the container by means of a hinge and ring to prevent loss. This can be advantageous if the container is a bottle whose opening is used for drinking directly from the container. Character description

[0047] The invention is explained below by way of example with reference to figures. Fig. 1 a sectional view through the closure cap in the resting state; Fig. 2 a perspective view of the closure cap without foil in the resting state according to Fig. 1; Fig. 3 a sectional view through the closure cap according to Fig. 1 in the triggered state; Fig. 4 a perspective view of the closure cap according to Fig. 3.

[0048] In the Fig. 1 and Fig. 2 shows the cap in its resting position. In Fig. 2 the slide is omitted for reasons of illustration.

[0049] The closure cap shown comprises a liquid-tight capsule 1, which is intended for filling with a liquid or granular component (not shown). The capsule 1 has a closed upper side 2, to which a circumferential wall 3 is connected, and a downwardly open upper side sealed with a film 5 ( Fig. 1) or lockable ( Fig. 2) Bottom side 4. If the film 5 is connected all the way around to the bottom side 4, as shown, the capsule 1 forms a liquid-tight container.

[0050] A pressure surface 6, intended for finger activation, is arranged on the outside of the top side 2 of the capsule 1. A membrane 7 is circumferentially connected to this pressure surface 6. By applying pressure to the pressure surface 6, the membrane 7 can be deformed in the axial direction (longitudinal axis L), see Fig. Fig. 3. The membrane 7 has a flat surface; in this case, it is the outer surface of a truncated cone. As can be seen, the membrane 7 is essentially rotationally symmetrical to the longitudinal axis L. The angle W between the longitudinal axis L of the capsule 1 on the one hand and the section of the inner side of the membrane 7 running from the upper edge of the wall 3 to the center on the other hand is an acute angle; in this case, it is approximately 45°. When pressed down (cf. Fig. 3) the angle W increases accordingly.

[0051] The outer edge of the membrane 7 adjoins the upper edge of the wall 3. This is where an inner radius R (in this case also with a corresponding outer radius) is located. The radius R reduces the thickness of the wall 3 on its inner side and merges tangentially into the inner side of the membrane 7.

[0052] On the inside of the top side 2 of the capsule 1 there is a groove extending towards the bottom side 4 up to the foil 5 ( Fig. 1) extending plunger 8 with several flanks 9 is arranged. In the resting position shown (with the membrane 7 undeflected), the plunger 8 extends approximately to the film 5. The ends of the flanks 9 facing the film 5 are tapered. In the central region of its lower end, the plunger 8 has a raised portion 11 projecting beyond the ends of the flanks 9, which serves as a support surface for the film 5, thus preventing inadvertent damage to the film 5 in the event of excess pressure in the vessel (not shown).

[0053] In this case, four burins 10 are positioned on the top side of the capsule 1, each spaced apart between the flanks 9. The burins 10 are also tapered. To protect the film 7, the flanks 9 of the punch 8 extend beyond the burins 10 toward the underside of the capsule 1.

[0054] The central area of ​​the upper side 2, which carries the pressure surface 6 on the outside and the stamp 8 on the inside, is arranged axially offset outwards in relation to the membrane 7, so that in the centre of the upper side 2 there is an outwardly projecting projection for the pressure surface 6 (see Fig. 1). In addition, this area is also thicker than the surrounding membrane 7. At the same time, the recessed membrane 7 is better protected against accidental contact and damage. When pressure is applied, the pressure surface 6 retains its shape, unlike the membrane 7 (see Fig. Fig. 3 and Fig. 4).

[0055] As can be seen, the closure cap comprises a screw cap 12 of conventional design surrounding the capsule 1. This provides a gap 13 toward the wall 3 of the capsule 1, in which a screw thread of the container (not shown) can be received. The membrane 7 with pressure surface 6 is arranged within the envelope of the screw cap 12 to protect the capsule 1.

[0056] In Fig. 3 and Fig. 4 is a sectional view through the closure cap according to Fig. 1 is shown in the triggered state. Some reference symbols not required for comprehension have been omitted for clarity.

[0057] The pressure surface 6 is subjected to a compressive force F, causing the membrane 7 to deform. Since the membrane 7 is flat and not corrugated, the lowering occurs essentially seamlessly. The angle W has increased from the previous value (approximately 45°) to over 90°, in this case approximately 120°. The punch 8 has first pre-tensioned the film 5 and then severed it using the sharp-edged flanks 9.

[0058] Since the styluses 10 are arranged on the inside of the membrane 7 in such a way that they can be pivoted radially outwards by pressing the pressure surface 6 due to the increase in the angle W from the punch 8, they tear the separated film 5 further open (due to their axial offset somewhat delayed after the separation by the flanks 9) and also hold it in the open position, so that the capsule 1 does not undesirably close again as long as the membrane 7 is in the triggered position. List of reference symbols 1 capsule 2 Top 3 wall 4 Bottom 5 Slide 6 printing area 7 Membran 8 stamps 9 flank 10 burins 11 Survey 12 screw caps 13 gap L Longitudinal axis W angle F compressive force R Radius

Claims

[1] A fillable closure cap for a vessel intended to hold a liquid, the closure cap comprising a capsule (1) with a closed upper side (2), a circumferential wall (3) and a downwardly open lower side (4) which can be closed or closed with a film (5), wherein the upper side (2) of the capsule (1) has on an outer side a pressure surface (6) intended for actuation with a finger, to which a flat membrane (7) which can be deformed in the axial direction by pressure on this pressure surface is connected circumferentially and which in turn is connected circumferentially to an upper edge of the wall (3), wherein the upper side (2) has on an inner side a stamp (8) which extends in the direction of the lower side (4) as far as the film (5) and has a plurality of flanks (9), and further comprises at least two styli (10) which are each arranged between the flanks (9) and spaced apart from them. [2] Closure cap according to claim 1, wherein the ends of the flanks (9) facing the film (5) are tapered. [3] Closure cap according to claim 1 or 2, wherein the plunger (8) has in the central region of its lower end a protrusion (11) projecting beyond the ends of the flanks (9). [4] Closure cap according to one of the preceding claims, wherein the styluses (10) are tapered. [5] Closure cap according to one of the preceding claims, wherein at least one inner radius (R) is arranged at a transition of the membrane (7) to the wall (3). [6] Closure cap according to claim 5, wherein the radius (R) reduces the thickness of the wall on its inner side and merges tangentially into the inner side of the membrane (7). [7] Closure cap according to one of the preceding claims, wherein in the unactuated state of the closure cap the angle (W) between a longitudinal axis (L) and the section of the inside of the membrane (7) extending from the upper edge of the wall (3) to the center is an acute angle. [8] Closure cap according to one of the preceding claims, wherein the region of the upper side (2) carrying the pressure surface (6) on the outside and the stamp (8) on the inside is arranged axially offset outwards in relation to the membrane (7). [9] Closure cap according to one of the preceding claims, wherein the pressure surface (6), in contrast to the membrane (7), retains its shape when pressure is applied by means of a finger. [10] Closure cap according to one of the preceding claims, wherein the styluses (10) are arranged on the inside of the membrane (7) in such a way that they can be pivoted radially outwards away from the punch (8) by pressing the pressure surface (6) due to the increase in the angle (W) between the membrane (7) and the longitudinal axis (L). [11] Closure cap according to one of the preceding claims, wherein the flanks (9) of the punch (8) project beyond the stylus (10) in the direction of the underside (4) of the capsule (1). [12] Closure cap according to one of the preceding claims, wherein the same comprises a screw closure (12) surrounding the capsule (1), which provides a gap (13) towards its wall (3) in which a screw thread of the vessel can be received. [13] Closure cap according to claim 12, wherein in the unactuated state of the closure cap the membrane (7) with pressure surface (6) is arranged within the envelope of the screw cap (12). [14] Method for using a closure cap according to one of the preceding claims, wherein the following steps are carried out to empty the closure cap into the interior of a vessel arranged below the closure cap and detachably connected to the closure cap: - applying a compressive force to the pressure surface (6); - Resulting in a continuously increasing axial lowering of the pressure surface (6) in the direction of the underside (4) with film (5), with likewise increasing deformation of the membrane (7); - contacting the stamp (8) with the foil (5); - simultaneous or delayed contact of the flanks (9) with the foil (5); - simultaneous or delayed contact of the stylus (10) with the film (5); so that the film (5) is pre-tensioned by the punch (8) and simultaneously or delayed severed by the flanks (9) and / or the styluses (10), whereupon the contents of the capsule (1) can be emptied into the vessel. [15] Method according to claim 14, wherein with increasing lowering of the upper side (2) the angle (W) between the inside of the membrane (7) and the longitudinal axis (L) increases, whereby the styluses (10) pivot radially outwards away from the stamp (8) when pressing the pressure surface (6) due to the increasing increase in the angle (W) of the membrane (7) to the longitudinal axis (L) while contacting the film (5). [16] Method according to one of claims 14 or 15, wherein the membrane (7) returns to a rest position after the pressure force has been removed.

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