EP1585683B1 - Air valve for a cap provided with a mouthpiece for drinking - Google Patents

Abstract

An air valve for the cap of a liquid container comprising an annular membrane. The cap has at least one air passage opening. A holding element having an encircling groove that is open toward the inside of the cap is fixed to the inside of the cap. This holding element has at least one air inlet opening connected to the air passage opening of the cap and which leads into the groove. A ring can be placed or is placed inside the groove. Also provided is a mouthpiece for drinking from a liquid container, which is made, in essence, of elastic material and placed on a cap provided with the inventive air valve.

Description

The invention relates to an air valve for a lid of a liquid container with a ring membrane, wherein the lid has at least one air passage opening, and a drinking mouthpiece of a liquid container, which consists of substantially elastic material and is arranged on a lid with an air valve.

Various air valves for covers of a liquid container are already known from the prior art, which either have a relatively complex structure or only ensure a reliable air supply at special pressure conditions.

From the US 5,706,973 A For example, an air valve is known in which an air valve and a drinking valve having insert part is attached to the underside of the lid, wherein the air valve consists of a slot arranged in a ball segment, wherein the ball segment is enclosed by a groove and connects to a cylindrical Aufsteckteil. In order to allow the desired air inlet, a certain ratio of the radius of the ball segment, the length of the enlarged slot, and the diameter of the ball segment surrounding groove is provided. In such a configuration, however, it is often unintentional to stick the slot opening, so that such air valves ensure only an insufficient supply of air.

From the DE 44 40 211 C1 a pressure-actuated container closure is known, in which a pressure-compensating designed as a ring membrane sealing part is provided which seals the lid towards the environment. When a certain pressure difference is exceeded, a gap between the elastic sealing part and a tube piece of an extended container shoulder is released for pressure equalization.

Furthermore, in the US 5 240 149 A discloses a container closure with an air inlet opening, in which an air valve is provided with a ring membrane which sealingly bears against a cylindrical, projecting into the container interior collar.

From the DE 101 09 064 A1 is an opening system with back ventilation mechanism known, in which to provide a pressure equalization between the container interior and the container exterior ventilation openings are provided, which are arranged in the wall between a prechamber and the container exterior. For closing the ventilation openings, a ventilation valve in the form of a lip made of a flexible material is provided. The lip valve thus releases the ventilation opening when a certain pressure difference is exceeded, so that the negative pressure in the container is almost compensated. Accordingly, this lip seals against a wall of the lid or attachment.

From the US 2002/0121525 A1 is known a drinking mouthpiece with an air valve, which includes a ring diaphragm. The annular membrane is in this case formed integrally with a liquid valve and also seals against a vertically projecting lid skirt.

In the DE 90 05 488 U For example, there is shown a closure flap having a flexible drinking valve member formed integrally with a flexible venting valve extending radially outwardly beyond an air vent opening in a disc-shaped manner.

In the US Pat. No. 6,305,570 B1 discloses a closure flap with a drinking and a venting valve, in which a central pin is provided with a vedickten head to which a valve designed as a flap valve of the venting valve is attached.

From the DE 101 09 064 A1 For example, an opening system with a re-venting mechanism is known in which vent holes are provided in the wall between an antechamber and the container exterior to provide pressure equalization between the container interior and the container exterior. For closing the ventilation openings, a ventilation valve in the form of a lip made of a flexible material is provided, which seals against a wall of the lid or attachment part. The lip valve thus releases the ventilation opening when a certain pressure difference is exceeded, so that the negative pressure in the container is almost compensated.

In the DE 594 359 C is shown a tube with a spring-loaded flap. The closure flap has a dispensing valve with a cap which lifts off a valve seat to dispense dry contents.

From the CH 686 244 A is still a drinking closure known in which ventilation channels are provided in a cover. The openings of the channels directed into the bottle interior can be closed by end regions of a diaphragm connected centrally to the cover.

It is an object of the invention to provide an air valve, which is structurally simple and at the same time reliably allows the presence of a negative pressure on the inside of the lid air inlet.

This is achieved according to the invention in the air valve of the type mentioned above, that on the inside of the lid a receiving element is fixed with a circumferential, open to the inside lid groove, which receiving element has at least one air inlet opening in communication with the air passage opening of the lid, which opens into the groove , wherein in the groove, a ring is used or inserted and by the bias of at least one groove wall, which is designed as a ring membrane at equal pressures on both sides of the air inlet opening and at an overpressure on the inside of the cover, the air inlet opening is sealed and at a negative pressure on the inside of the lid the air inlet opening is released.

With the help of usable in a groove of a receiving part or ring used a structurally simple air valve is provided, which reliably ensures the desired air inlet in the presence of a negative pressure on the inside of the lid. In addition, due to the bias of the annular membrane no perfect pressure equalization on both sides of the air valve, so that in the mounted position of the lid on a liquid container in the non-used state, a certain residual vacuum in the liquid container is present, which advantageously counteracts unwanted leakage of liquid from the liquid container.

For a good sealing effect of the ring membrane in the unused condition on the ring, it is advantageous if the in the inserted position of the ring of the air inlet opening of the receiving element facing end portion of the ring is formed in cross-section substantially conical.

If the in the inserted position of the ring of the air inlet opening of the receiving element facing end portion of the ring has at least one recess which is arranged in the inserted position of the ring in alignment with the air passage or air inlet opening, an unhindered air inlet is advantageously ensured.

If the ring in the receiving element can be fastened or fastened by means of a snap connection, the result is a structurally particularly simple, cost-effective connection between the ring and the receiving element.

In order to form the inner groove wall as a ring membrane, it is advantageous if the ring has on its outer side a circumferential bead for snapping into the groove of the receiving element. This is particularly advantageous, since thus the inner groove wall can be formed as a ring membrane, and consequently the air entering through the air valve is passed directly into the interior of the liquid container.

If the annular membrane for fixing the bias of the annular membrane has at least one thin spot, the size, the number and the wall thickness of the thin areas can be set in a simple manner the residual vacuum remaining in the liquid container in the unused position.

If the ring is connected via an inwardly extending connecting flange with a fastening ring extending in the direction of a preferably central lid opening, a valve element of a drinking valve attached to the fastening ring can be fixed simultaneously with the insertion of the ring into the groove of the receiving element.

If at least one ventilation opening is provided in the connecting flange, air which has entered the receiving element through the air passage opening in the cover and through the air inlet opening can freely enter the interior of a liquid container on which the cover is placed.

In order to allow an air inlet as freely as possible, it is advantageous if the ventilation opening of the connecting flange is arranged in the inserted position of the ring adjacent to the inner groove wall designed as a ring membrane.

As mentioned above, the invention also relates to a drinking mouthpiece for a liquid container, wherein an air valve is provided according to the invention.

The drinking mouthpiece according to the invention can be produced in a particularly simple manner if the preferably made of a thermoplastic elastomer (TPE), soft drinking mouthpiece with the preferably made of polypropylene (PP), hard cover made in one piece in a multi-component injection molding process is. Of course, the membrane and the drinking Münstsück can also be designed in several parts to allow easy replacement of the membrane.

In a drinking mouthpiece, further comprising a valve arrangement for the passage of liquid from the liquid container with a flexible membrane which is provided with at least one valve opening, and a substantially rigid membrane support member having at least one valve opening, wherein in a closed position the valve assembly, the membrane rests on the membrane support member and the valve opening of the membrane from the membrane support member and the valve opening of the membrane support member are sealingly covered by the membrane, and the membrane is curved inwardly in the closed position, it is advantageous when pressure application from the outside to the drinking mouthpiece or by applying a negative pressure on the side facing away from the membrane support member of the membrane, the membrane is in a umgeschnappten, outwardly curved open position, in which the valve openings of the membrane and the membrane support element are released.

Due to the inward curvature of the membrane in its closed position or by snapping the membrane in an outwardly curved open position when applying a negative pressure or pressure application from the outside to the drinking mouthpiece, the membrane is in its open position in a relatively stable position, in which the Valve opening of the membrane and the membrane support member are reliably released, so that even by slight unwanted pressure application to the membrane immediately the valve opening of the membrane is not closed again. Consequently, results in a particularly easy-to-use and in particular a reliable fluid removal enabling valve assembly which is not yet practiced by children dealing with an elastic drinking mouthpiece are, can be used easily, and by the interaction with the air valve and reliable sufficient air supply is guaranteed.

If the membrane is in each case essentially conical in its closed position and open position, a comparatively stable position of the membrane is obtained, wherein a snap-on of the conical membrane into its open position is achieved in a simple manner by applying pressure to the drinking mouthpiece and applying a negative pressure ,

In order to reliably achieve a sealing between the valve openings in the membrane and on the membrane support element in the closed position of the valve arrangement, it is advantageous if the membrane support element has a substantially inwardly curved shape of the membrane in its closed position corresponding valve seat surface.

If the drinking mouthpiece has a latching groove for receiving the membrane support element designed as a latching body, the position of the membrane support element in the drinking mouthpiece is reliably fixed and unwanted displacements relative to the membrane, which could possibly lead to leaks in the closed position , be avoided.

Furthermore, it is favorable if, for positioning the membrane support element in the drinking mouthpiece, the membrane support element is connected via a web to a fastening ring.

For a high level of user comfort when using the drinking mouthpiece and also to achieve a certain orientation of the drinking mouthpiece in the mouth in use, it is advantageous if the drinking mouthpiece is formed in plan view substantially oval. Of course, however, the drinking mouthpiece may also have any other desired contour shape, in particular those forms are favorable, which cause a certain orientation of the drinking mouthpiece in use.

When the bridge for attachment of the membrane support member is plate-shaped, wherein the plane defined by the plate-shaped web extends in plan view in the direction of the longer axis of the drinking mouthpiece, a clenching of the soft drinking mouthpiece is made possible, which in turn facilitates drinking , In addition, the user's teeth come in the case of a fall only with the soft Drinking mouthpiece in connection, which can be avoided injuries. In addition, the plate-shaped web in the direction of the shorter axis of the drinking mouthpiece by its plate-like configuration also has a certain flexibility, which further reduces the risk of injury, especially in the event of a fall.

In order to reliably ensure the passage of liquid or liquid food through the membrane in its open position, it is advantageous if the membrane has a plurality of valve openings arranged along a circular line. In connection with this, it is also advantageous if the membrane support element has a substantially central valve opening.

In order to prevent the membrane from being damaged accidentally or to avoid contact of the user's tongue with the membrane in its umgeschnappten open position, it is advantageous if the mouthpiece extends as a drinking spike over the membrane beyond, with an elevated drinking spout Edge is formed as a membrane protection and spacer element.

Furthermore, it is advantageous if the membrane support element made of polypropylene (PP), since thus reliably closing the valve assembly in the inwardly curved closed position of the membrane can be achieved.

• Fig.1 eine auseinandergezogene Ansicht eines Trink-Mundstücks mit einem Trink- und einem Luftventil;
• Fig.2 einen Querschnitt des Trink-Mundstücks gemäß Fig. 1 in seiner zusammengesetzten Stellung;
• Fig.3 eine perspektivische Ansicht des Trink-Mundstücks gemäß Fig.2;
• Fig.4 im Detail einen Schnitt des Endabschnitts des Trink-Mundstücks mit einer Membran in ihrer Schließstellung;
• Fig.5 im Detail einen Schnitt des Endabschnitts des Trink-mundstücks gemäß Fig.4, jedoch mit der Membran in ihrer Offenstellung;
• Fig.6 im Detail einen Schnitt des Luftventils, mit einer Ringmembran in einer Schließstellung;
• Fig.7 einen Schnitt gemäß Fig. 6, jedoch mit der Ringmembran in einer Offenstellung;
• Fig.8 eine Draufsicht auf den Deckel mit dem im Querschnitt ovalen Trink-Mundstück; und
• Fig. 9 eine Draufsicht auf den Deckel gemäß Fig. 8 mit einem Schnitt gemäß der Linie IX-IX in Fig. 2.

The invention will be explained below with reference to a preferred embodiment shown in the drawing, to which, however, it should not be limited. In detail show:

• Fig.1 an exploded view of a drinking mouthpiece with a drinking and an air valve;
• Fig.2 a cross-section of the drinking mouthpiece according to Fig. 1 in its assembled position;
• Figure 3 a perspective view of the drinking mouthpiece according to Fig.2 ;
• Figure 4 in detail, a section of the end portion of the drinking mouthpiece with a membrane in its closed position;
• Figure 5 in detail a section of the end portion of the drinking mouthpiece according to Figure 4 but with the diaphragm in its open position;
• Figure 6 in detail a section of the air valve, with a Ring membrane in a closed position;
• Figure 7 a section according to Fig. 6 but with the ring membrane in an open position;
• Figure 8 a plan view of the lid with the oval in cross-section drinking mouthpiece; and
• Fig. 9 a plan view of the lid according to Fig. 8 with a section along the line IX-IX in Fig. 2 ,

In Fig.1 is shown consisting of a thermoplastic elastomer soft drinking mouthpiece 1, which on a cover 2, which consists of a hard plastic material, such as polypropylene, is applied, said to a central lid opening 2 'subsequent drinking mouthpiece 1 and the Cover 2 are made in one piece by means of a 2-component injection molding process. In the upper end portion 1 'of the drinking mouthpiece 1 is a valve assembly 3 (s. FIGS. 2 and 3 ) provided with a flexible membrane 4, which is formed integrally with the drinking mouthpiece 1.

The membrane 4 has in the in Fig.1 shown relaxed closed position on an inwardly curved cone shape, wherein in the lateral surface four along a circular line arranged valve openings 5 (see also Figure 4 and 8th ) are provided. Subsequent to the membrane 5, a latching groove 6 for receiving a membrane support element 7 is provided inside the drinking mouthpiece 1. The membrane support element 7 is substantially plate-shaped and provided with an upper corresponding to the cone shape of the membrane 4 inwardly curved valve seat surface 8.

For fixing the membrane support element 7 with the cover 2, the membrane support element 7 is connected via a plate-shaped web 9 with a fastening ring 10.

As in particular from the FIGS. 2 and 3 It can be seen in which the membrane-receiving element 7 is shown in the locking groove 6 of the drinking mouthpiece 1 position taken place by the insertion of a ring 11 which is connected via a connecting flange 12 with the mounting ring 10 of the plate-shaped web 9, at the same time the formation an air valve 13 and the attachment of the membrane receiving element 7 in the drinking mouthpiece 1 to form the drinking valve. 3

The operation of the designed as a drinking valve valve assembly 3 with the membrane 4 and the membrane support element 8 goes in particular from the in the FIGS. 4 and 5 shown detail views, wherein the membrane 4 in Figure 4 in its inwardly curved closed position and in Figure 5 shown in its outwardly arched open position.

As in Figure 4 can be seen, the valve openings 5 of the membrane 4 are in its closed position on the full-surface valve seat surface 8 of the membrane support member 7 and a central valve opening 15 of the support member 7 is covered by the end face of the conical membrane 4, so that a liquid passage in the closed position of the membrane 4 is prevented.

Furthermore, in Figure 4 in detail the locking groove 6 of the elastic drinking mouthpiece 1 can be seen, in which the membrane support element 7 is received by means of a snap connection. At the locking groove 6 directly adjoins the membrane 4, wherein by an annular latching tongue 16 of the membrane support member 7, a kind of tilting surface for snapping the membrane 4 from its inwardly curved closed position into its outwardly curved in Figure 5 shown open position is formed.

Furthermore, in Figure 4 It can also be seen that the drinking mouthpiece 1 has a raised edge 17 which extends beyond the membrane 4 and serves as a membrane protection and at the same time is also designed as a spacer element, so that the membrane 4 does not project above the membrane in its outwardly curved open position Edge 17 extends (see. Figure 5 ). Thus, access to the membrane 4 can be achieved only with difficulty, so that unintentional snap back of the membrane is made more difficult.

In Figure 5 is the membrane 4 under a force applied from the outside perpendicular to the longitudinal extension of the drinking mouthpiece 1 in the direction of arrow 18 compressive force, which automatically results from the contact pressure of the lips when drinking or sucking, or under an applied during a drinking or suction vacuum to the drinking mouthpiece 1 shown. The membrane 4 in this case snaps into its outwardly curved open position, in which the valve opening 15 in the membrane support element 7 and along a circular line in the lateral surface of the conical membrane 4 distributed valve openings 5 of the membrane 4 are released and thus liquid or liquid food on the Drinking mouthpiece 1 can be removed. As soon as the negative pressure on the outside of the membrane 4 is no longer applied or acting in the direction of arrow 18 force when discontinuing the drinking mouthpiece 1 of the lips no longer works, the membrane automatically snaps back into their in Figure 4 shown closed position, so that liquid or liquid food, such as milk food, can be removed from a liquid container in a simple manner and at the same time given a drip-free, good sealing valve assembly in a non-use position.

In the FIGS. 6 and 7 is in detail that too in the FIGS. 2 and 3 shown air valve 13, the air passage openings 19 in the cover 2 and related air inlet openings 20 in a receiving element 21 (see also Fig.1 ), which is made in one piece via a flange 22 with the cover 2 in a two-component injection molding process. The flange 22 is also characterized by a sealing ring 23 (see. Fig.1 ) which is provided for a tight closure of the apron-like lid 2 with the bottleneck of a liquid container, wherein the lid 2 is fastened either by means of a screw or snap connection on the bottle neck.

The annular receiving element 21 has a groove 24 (see. Fig.1 ), in which the ring 11 is inserted. The ring 11 has on its outer periphery a bead 25 through which the ring 11 can be secured in the groove 24 of the receiving element 21 by means of a snap connection.

In the in Fig. 6 shown closed position of the air valve 13 is formed as a ring diaphragm inner groove wall 26 of the receiving element 21 by their bias on the inserted ring 24 in the groove 11 sealingly, wherein the inner groove wall 26 to determine their bias and thus in order to determine the in the non -Use of a drinking bottle present residual vacuum thin spots 27 (see. Fig.1 ) having.

If, however, a negative pressure is applied to the drinking mouthpiece 1 by a drinking or suction movement of a user, the annular membrane 26 lifts slightly from a sealing cone 28 formed as end portion of the ring 11, so that air from the outside through the air passage openings 19 in the lid 2, the air inlet openings 20 in the receiving element 21 and with the air passage openings 19 and the air inlet openings 20 aligned recesses 29 may occur in the sealing cone 28 (see. Fig. 7 ).

Furthermore, in the connecting flange 12, via which the ring 11 with the fastening ring 10 of the web 9 for attachment of the membrane support element 8 (s. Fig.1 Ventilation openings 30 are provided, which are arranged in the inserted position of the ring 11 in alignment with air passage openings 19 and the air inlet openings 20, so that an unhindered air inlet in the direction of an arrow 31 is made possible in a liquid container.

Since the insertion of the ring 11 in the groove 24 at the same time the membrane support member 7 is mounted in the drinking mouthpiece 1, when using the cover 2 by the combination of the air valve 13 and the drinking valve 3, a largely drip-free liquid container can be achieved especially suitable as a nutritional aid for the administration of milk food.

In the FIGS. 8 and 9 is particularly apparent that the drinking mouthpiece 1 is oval in plan view, so that the drinking mouthpiece 1 can be taken in use only in a particular orientation, namely in its transverse-oval orientation in the mouth.

In particular Fig. 9 can be seen, is in the position recorded in the mouth of the web 9 of the membrane support member 7 between the teeth oriented flat, so that a clenching or pressing the soft drinking mouthpiece 1 in the direction of arrow 18 is possible, whereby the snapping the membrane 4 in their in Figure 5 shown open position is favored. Furthermore, the teeth are largely protected by children even in the event of a fall largely by the soft drinking mouthpiece 1, since no direct contact with the much stiffer web 9 occurs. In addition, the entire drinking mouthpiece 1 including the web 9 is also flexible in the direction of its smaller axis, so that a yielding in case of unwanted jerky movements is possible. Furthermore, the stiffer membrane support member 7 together with web 9, mounting ring 10 and ring 11 are pressed in a fall also inward, as this only by the snap connection in the locking groove 6 of the drinking mouthpiece 1 and the snap connection in the groove 24 of Receiving element 21 is inserted, so that the risk of injury further reduces in a fall.

Claims (23)

1. An air valve (13) for a lid (2) of a liquid container, which includes an annular membrane, wherein said lid (2) contains at least one air passage opening (19), characterised in that a reception element (21) including a peripheral groove (24) that is open towards the inner side of the lid is fastened to the inner side of the lid and comprises at least one air entry opening (20) communicating with the air passage opening (19) of the lid (2) and leading into the groove (24), wherein a ring (11) is insertable or inserted in the groove (24) and the air entry opening (20) is sealed at equal pressures on either side of the air entry opening (20) and at an overpressure at the inner side of the lid, due to the bias of at least one groove wall (26) designed as an annular membrane, and the air entry opening (20) is released at an underpressure at the inner side of the lid.
2. An air valve according to claim 1, characterised in that the end region (28) of the ring (11) facing the air entry opening (20) of the reception element (21) in the inserted position of the ring (11) is designed to be substantially conical in cross section.
3. An air valve according to claim 2, characterised in that the end region (28) of the ring (11) facing the air entry opening (20) of the reception element (21) in the inserted position of the ring (11) comprises at least one recess (29).
4. An air valve according to any one of claims 1 to 3, characterised in that the ring (11) is fixable or fixed in the reception element (21) by the aid of a snap connection.
5. An air valve according to claim 4, characterised in that the ring (11) comprises on its outer side a circumferential bead (25) for snapping into the groove (24) of the reception element (21).
6. An air valve according to any one of claims 1 to 5, characterised in that the inner groove wall (26) is designed as an annular membrane.
7. An air valve according to any one of claims 1 to 6, characterised in that the annular membrane (26) comprises at least one thin spot (27) to fix the bias of the annular membrane.
8. An air valve according to any one of claims 1 to 7, characterised in that the ring (11) is connected with a fastening ring (10) extending in the direction of a preferably central lid opening, via an inwardly extending connection flange (12).
9. An air valve according to claim 8, characterised in that at least one ventilation opening (30) is provided in the connection flange (12).
10. An air valve according to claim 9, characterised in that the ventilation opening (30) of the connection flange (12), in the inserted position of the ring (11), is located adjacent to the inner groove wall (26) designed as an annular membrane.
11. A drinking mouthpiece (1) of a liquid container, which is made of a substantially elastic material and arranged on a lid (2) including an air valve (13) according to any one of claims 1 to 10.
12. A drinking mouthpiece according to claim 11, characterised in that the soft drinking mouthpiece (1), which is preferably made of a thermoplastic elastomer (TPE), is produced by a multicomponent injection molding process in one piece with the hard lid (2), which is preferably made of polypropylene (PP).
13. A drinking mouthpiece according to claim 12, further comprising a valve assembly (3) for the passage of liquid from a liquid container, which includes a flexible membrane (4) having at least one valve opening (5) and a substantially rigid membrane supporting element (7) having at least one valve opening (15), wherein, with the valve assembly (3) being in a closed position, the membrane (4) rests on the membrane supporting element (7) and the valve opening (5) of the membrane is sealingly covered by the membrane supporting element (7) and the valve opening (15) of the membrane supporting element (7) is sealingly covered by the membrane (4), the membrane (4) being inwardly curved in said closed position, characterised in that, during the external application of pressure to the drinking mouthpiece (1) and/or the application of an underpressure at the membrane side facing away from the membrane supporting element (7), the membrane (4) is in a resnapped, outwardly curved open position in which the valve openings (5, 15) of the membrane (4) and membrane supporting element (7), respectively, are released.
14. A drinking mouthpiece according to claim 13, characterised in that the membrane (4) is each substantially conical in its closed and open positions.
15. A drinking mouthpiece according to claim 13 or 14, characterised in that the membrane supporting element (7) comprises a valve seat surface (8) substantially corresponding with the inwardly curved shape of the membrane (4) in its closed position.
16. A drinking mouthpiece according to any one of claims 13 to 15, characterised in that the drinking mouthpiece (1) comprises a latch groove (6) intended to receive the membrane supporting element (7) configured as a latch body.
17. A drinking mouthpiece according to any one of claims 13 to 16, characterised in that the membrane supporting element (7) is connected with a fastening ring (10) via a web (9).
18. A drinking mouthpiece according to any one of claims 13 to 17, characterised in that the drinking mouthpiece (1) is designed to be substantially oval in top view.
19. A drinking mouthpiece according to claims 18 and 17, characterised in that the web (9) used to fasten the membrane supporting element (7) is designed in a plate-shaped manner, with the plane defined by the plate-shaped web (9) extending in the direction of the longer axis of the drinking mouthpiece (1) in top view.
20. A drinking mouthpiece according to any one of claims 13 to 19, characterised in that the membrane (4) comprises several valve openings (5) arranged along a circular line.
21. A drinking mouthpiece according to any one of claims 13 to 20, characterised in that the membrane supporting element (7) comprises a substantially central valve opening (15).
22. A drinking mouthpiece according to any one of claims 13 to 21, characterised in that the mouthpiece (1), formed as a drinking spout, extends beyond the membrane (4), whereby an elevated drinking spout edge (17) is formed as a membrane protection and spacer element.
23. A drinking mouthpiece according to any one of claims 13 to 22, characterised in that the membrane supporting element (7) is made of polypropylene (PP).

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