EP3186163A1

EP3186163A1 - Metering device made of plastics material

Info

Publication number: EP3186163A1
Application number: EP15738613.7A
Authority: EP
Inventors: Rolf MÜHLEMANN
Original assignee: Muehlemann IP GmbH
Current assignee: Muehlemann IP GmbH
Priority date: 2014-08-27
Filing date: 2015-07-13
Publication date: 2017-07-05
Also published as: CH710030A2; AU2015309249A1; WO2016030073A1; CN106794932B; KR20170048392A; US10315830B2; JP2017525630A; CN106794932A; US20170253412A1

Abstract

The metering device (1) according to the invention consists of a metering container (2) which can be fitted with screwing action on a standard bottle neck. Said metering container (2) has a funnel-shaped base (20), which is adjoined by a cylindrical lateral wall (22) having, at the upper end, a cross-sectionally u-shaped collar (25), to which a cover surface (5) can be applied in a form-fitting manner. At the top of the metering device (1) is a pressure-exerting head (4) with an encircling, detachable periphery (42). A puncturing mechanism (3) having a two-part pressure-exerting pin (31, 35) can be actuated by means of the pressure-exerting head (4). The puncturing mechanism is fixed to the cover surface (5), prior to initial use, and is separated out of the cover surface (5) by way of a cylindrical casing wall (33) on the pressure-exerting head (4). The second part (35) of the puncturing mechanism (3) has a punching sleeve (39), which severs membranes (7) which close the metering container (2), whereupon the contents of the metering container (2) can be supplied into the bottle.

Description

Dosing device made of plastic

The present invention relates to a metering device made of plastic, which can be placed on a bottleneck for sealing attachment, with a dosing, which is closed at its exit end before the first opening by means of a, on the opposite, tätigungsseitigem end with a sealingly attached top surface with fullness by the Trinkfülle a pressure pin, which is in operative connection with a piercing, is passed and that the two dosing container concentric annular walls are formed, wherein the outer annular wall is provided with an internal thread, and further wherein the pressure pin is connected to a print head.

For about twenty years, dosing devices have been developed in combination with closures for bottle or plastic containers for dispensing liquid or free-flowing active substances into the bottles or containers on which these dosing devices are mounted. Although, as noted earlier, such dispensers were developed about twenty years ago, they have only been around for a long time

- l - short time in the market. Originally, the idea was to offer medication along with a relatively small bottle, so that a traveler could take it along with a drink to take his medication, without having to think specifically about drinks or go to a restaurant first to obtain an appropriate, suitable drink. From this original idea, one has largely strayed today. Today, such metering devices made of plastic for many, various, liquid, giant-shaped or solid, present in tablet form drugs offered. They allow a specific mixing ratio of the active ingredient and bottle contents to be maintained exactly. For example, plant fertilizers are still offered in relatively large bottles or containers, which are then added in small doses to a liquid. For example, a pesticide or insecticide, pesticide or fungicide must be added in an amount of only 10 milliliters of a watering can with five liters of water. If such an amount is to be dispensed from a two liter plastic bottle, a screw cap is usually used as a measuring cup. Experience has shown that these measuring cups are hardly used and a user dosed by eye, so that almost always overdosed. This is ecologically and economically disadvantageous. Dosing caps that are suitable for dispensing active ingredients in solid form, in their structure usually a bit more complex, since these drugs are usually in blisterart igen packaging so that they are protected from light and moisture to the moment where they are released into a liquid should. In the case of beverages in particular, these active substances are vitamins which are not stable in the liquid phase and also decompose under the influence of light. A typical example of such metering closures is shown in WO2008 / 002160. In such Dosierverschlüssen usually the blister pack is designed and dimensioned so that the welded edge is held non-positively and positively with the screw of the closure between a bottle neck and a jacket wall of the closure member. By means of a piercer, which is held above the blister pack and can be actuated by means of a guided print head, the tablet can be ejected in the blister pack. A protective cap is usually held over the piercer and the print head, which must be removed before the first operation.

If the content to be dispensed is such a metering device in liquid or giant-shaped form, it usually works with a device in the cap a sealed chamber is present and this chamber is opened by a relative movement between this chamber and a piercer, so that the content of Chamber in the Container passes. From CN201235991Y, for example, a solution is known in which the piercer is fixedly attached to the lower part of this metering closure and, in the robbery movement of the cap in which the sealed chamber is mounted, the membrane which closes the chamber is cut open. A very similar dosing with a receiving chamber in the cap of the closure is known from JP2006176193. The GB2471994A shows a metering device consisting of a closure bottom and an attached cap, here in the lower part of the Dosierverschlusses a chamber is formed and stored therein a Durchstosser which is displaceable after removal of a cap in a lower position while the dosing chamber, at its lower end is closed by a diaphragm, pushes.

All known metering devices with a metering container integrated therein are designed so that the metering container has a diameter which has at most the inner diameter of the bottle neck. If the metering container is attached to the upper part of the metering device, this diameter is again reduced by the wall thickness of the metering container.

For example, if a bottle containing a bottleneck with an inside diameter of 22 millimeters, a quantity of 50 Milliliter be delivered, then the metering chamber, or the metering, would have a height of 13 centimeters. Considering that in addition still a piercer must be present, which is to perform a certain stroke and has a print head, it can be assumed that the height of such a metering device would have to be practically 15 centimeters. However, this is impractical and useless in every way. Considering that, for example, a liter bottle has a height of about 35 centimeters and then a metering device should be mounted with a height of about 15 centimeters, this would require that in a store shelf, the distance between two shelves would be more than half a meter , This would be completely uneconomical and even such a bottle would be impractical to store in the transport as well as in the household.

It is therefore an object of the present invention to provide a

To provide metering device which is adapted to deliver a larger volume in a bottle without significantly increasing the overall height.

If a larger volume ready for metered dispensing, not only the unstable or photosensitive content may be stored in the metering, or in the metering chamber, but it is also available space to additionally concentrated liquids give as fruit concentrates, coffee concentrates, sugar ^¬ or sweeteners.

These objects are met by a metering device made of plastic of the type mentioned, which is characterized in that the dosing has a designed as a funnel bottom, the outlet nozzle is formed by said inner ring wall and the conical region of the funnel on the outer ring wall in the radial and axial Direction extends out and the inner ring wall is formed on the lower side of the conical region, and wherein at the upper edge of the funnel connects to a cylindrical wall which continues downwards as a circumferential skirt and extends below the level of the two annular walls away and the lower edge forms a base, and further wherein the metering container is closed by a top surface of cast spout through which the piercing is passed. Preferably, a print head is formed at the upper end of the piercer.

If you design this printhead dome-shaped and you can see the lower, peripheral edge region separable, so this lower edge before first use on a circumferential collar on the cylindrical wall, which rest as a funnel shaped dosing and so on represent closed and secured structure, the peripheral lower edge area can then serve as a guarantee strip. In order to make the injection molds for the production of the metering device made of plastic as simple as possible, it is useful and advantageous to make the piercer in two parts, as disclosed in claim 4. Further advantageous embodiments will become apparent from the dependent claims. In the drawing, a preferred imple mentation form of the subject invention is shown and explained with reference to the following description. It shows:

Figure 1 is a side view of the metering device

Plastic before the first operation and

Figure 2a shows a diametrical section of the metering device according to

Figure 1, taken along the line C-C.

FIG. 2b shows the circled detail of FIG. 2 on a larger scale

FIG. 3 again shows a side view of FIG

Dosing device according to the figure 1, but after the first operation and shows accordingly

Figure 4a in turn a diametral section of

Dosing device according to Figure 3 along the line DD again showing the detail circled in FIG. 4 on a larger scale. In is an exploded view of the

Dosing device shown before the first opening, while Figure 6 shows again in an exploded view, the metering device after first use as shown in Figures 3 and 4.

FIG. 7 shows an alternative embodiment of the invention

Dosing device on a sealed

Bottleneck can be applied, in the position before the first opening in the cut and

FIG. 8 shows the same embodiment in the same view after the first opening

Figure 9, the metering container by itself also in a diametric section. The metering device is designated overall by 1. The

Term dosing was chosen here, instead of the

Term Dosierverschlussvorrichtung. at Dosierverschlussvorrichtungen this is always brought mounted on the appropriate bottle in the trade. This is not the case here. Here, the metering device is marketed as such and can then be mounted on a bottle with standard bottleneck. The metering device according to the invention is thus provided with the bottle neck adapted means, which will be discussed later. The metering device according to the invention essentially consists of three or four parts, as can be seen from FIGS. 5 and 6. These parts are the metering 2, the piercer 3, the print head 4 and the top surface 5 of the dosing 2. The piercer 3 and the top surface 5, as can be seen from the figure 5, be made in one piece and their separation then takes place only at First use of the dosing device. Below, these individual parts will now be described in detail. The metering container 2 has a funnel-shaped bottom 20. This funnel-shaped bottom 20 has an upper edge 21. The terms above and below are always understood to mean always above towards the print head 4 and down towards the connection means for attachment to a bottleneck to be described. At this mentioned upper edge 21 of the funnel-shaped bottom 20, integrally closes a circumferential jacket wall 22 at. This jacket wall 22 is extended downwardly over the upper edge of the funnel-shaped bottom 21 as a skirt 23. This skirt 23 defines a flat surface which forms the base 24 of the metering device. As already mentioned, these metering devices are preferably sold separately from the bottles on which they are suitable. In principle, it would also be quite possible that these metering devices already mounted on the bottle get into the trade.

At the upper end of the jacket wall 22, a cross-sectionally U-shaped collar 25 is formed. This U-shaped collar 25 forms a circumferential groove 26, which serves for the sealing and positive connection of the top surface 5 with the metering container 2.

On the underside of the funnel-shaped bottom 20, two concentric annular walls are formed. The inner annular wall 27 forms a spout 27 of the dosing 2. An outer, concentric with the inner annular wall 27 extending annular wall 28 is formed on the underside of the funnel-shaped bottom 20. Both annular walls 27, 28 terminate at the same height, but above the base 24. The outer ring wall 28 has an internal thread 29. This internal thread is of course adapted to the external thread of the bottle neck, to which the metering device. 1 should be screwed. It should be briefly mentioned that a large number of liter and one and a half liter bottles have standardized thread. This applies to both PET bottles and glass bottles.

Placed on the dosing 2, the printhead 4. This printhead 4 has a substantially dome-shaped or dome-shaped pressure surface 40. This pressure surface 40 has at the top a flattening 41 on. At the spherically curved pressure surface 40, a peripheral, cylindrical edge 42 adjoins downward, which can be separated from the actual pressure surface 40. For this purpose, a separating seam 43 extends between the pressure surface 40 and the peripheral edge 42, which is formed either by a circumferential thin point or by a plurality of predetermined breaking point bridges. On the side averted in FIG. 1, the peripheral edge 42 is severed and a pull tab is formed. The circulating, separable edge 42 thus serves as a guarantee strip before the first use, which ensures and recognizes that the metering device is unused. After the separation of the peripheral edge 42, only the first actuation can take place. The term Erstbetätigung here is somewhat misleading, but quite common in such dosing, although the metering device is only for single use and thus only a first operation is done and not a repeated use.

- ll - Before the first use, the lower edge of the separable, peripheral edge 42 rests on extremely on the U-shaped collar 25. After the separation of the peripheral edge 42 then rests the lower edge of the dome-shaped pressure surface 40 also to extremely on the U-shaped collar 25.

Below the pressure surface 40, in the example shown here, below the flattening 41 of the print head 4, a first part 30 of the piercer 3 is formed. This first part 30 of the penetrator 3 is formed by a first part 31 of a pressure pin, which is designed in two parts. Only this first part 31 of the pressure pin is integrally formed on the printhead. The pressure pin consists here of three star-shaped, radially outwardly directed guide walls 32 which are integrally formed integrally on a cylindrical envelope wall 33. This cylindrical envelope wall 33 is cut at the bottom inclined and has at its lower edge a cutting edge 34. The meaning of this separating blade 34 will be described below. The guide walls 32 are shortened at the lower end in the radial direction and engage there in a second part 35 of the penetrator 3 a. This second part 35 of the piercer 3, has a pipe section 36. This pipe section 36 has a lower, closed end 37. At the upper end of the pipe section 36, a circumferential collar 38 is formed. At the lower, closed end 37 of the pipe section 36, a punching sleeve 39 is formed. This punching sleeve is cylindrical and slidably guided in the inner annular wall 27, which forms the spout 27 ¹ . The punching sleeve 39 is in turn cut obliquely to its center axis and has at the lower edge of a cutting edge 39 ¹ . The punching sleeve 39 is connected to the tube sleeve 36, or with its lower, closed end 37, via at least one radially outwardly directed connecting wall 39 ¹¹ , with the punching sleeve 39. The metering container 2 is closed at its upper end by means of a cover surface 5. This top surface 5 has a pot-shaped configuration. The bottom 50 of this cup-shaped top surface 5, as shown here and preferably realized, be integrally connected to the peripheral collar 38 and the pipe section 36. Since the tube section 36 is also closed at the bottom, the bottom 50, together with the circumferential collar 38 and the tube section 36, forms a closed end of the dosing container 2. The circumferential collar 38 is connected to the bottom 50 of the cup-shaped cover surface 5 via a predetermined separating skin 51 sealingly connected. Adjacent to the outer edge of the predetermined cutting skin 51, adheres to an upward annular wall, which forms a drinking spout 6. In this drinking spout 6 is the cylindrical envelope wall 33, which forms together with the guide walls 32, the first part 31 of a pressure pin. At the bottom 50 of the top surface 5, which is cup-shaped, adjacent to an outer, circumferential pot wall 52 at. This is bent hairpin-shaped in cross-section above. This bent portion 53 engages in the circumferential groove 26, the cross-sectionally U-shaped collar 25, a. The channel 26 has in its outer or inner wall corresponding positive locking means and the bent portion 53 of the pot wall, has corresponding counter-equal molding means, so that the top surface 5 is irreversibly fixed to the dosing 2. Also, the printhead 4 has both on the peripheral, separable edge 42, as well as above the separating seam 43 in the curved region of the pressure surface 40, corresponding positive locking means which is releasably connected with the same form-fitting means at the upper, outer edge of the bent portion 43, with opposite positive locking means ,

Finally, the dosing container 2 is closed by means of a membrane 7 before the first opening. This membrane is welded or glued on the inner annular wall 27.

According to the preferred embodiment described herein, the second part 35 of the penetrator 3 is made integral with the top surface 5 as previously described in detail. However, it is quite possible to manufacture the second part 35 of the penetrator 3 separately from the top surface 5. In this case, an annular film is under the top surface 5 glued or welded, which is also welded or glued to the peripheral collar 38 and so also forms a sealing and retaining connection between these two parts. In such a solution, it is then advantageously the tube section 36 and the punching sleeve 39 as zusammensteckbare, separate parts finished, so as to attach the annular film can. Finally, 5 stiffening ribs 54 may be integrally formed on the bottom 50 of the top surface, which are connected to the drinking spout 6.

The punching sleeve 39 may have on its outer wall, for example, a circumferential retaining bead and on the inside of the inner annular wall 27 have a gegengleiche retaining groove, which engage in reaching the lowest position of the punching sleeve and thus secure the punching sleeve in this position to a drop of the second Part 35 of the piercer 3 in a bottle to prevent. However, this is usually not necessary, since the first part 31 of the pressure pin is held non-positively in the pipe section 36. An alternative embodiment of the dosing device 1 according to the invention is shown in FIGS. 7-9. Here remain the printhead 4, the top surface 5 and the Drinking spout 6 unchanged. On the other hand, the metering container 2 and the piercer 3 as well as the membrane 7 are slightly modified. This will now be discussed in detail below. Unchanged in this case remain the jacket wall 22 with the adjoining skirt 23, which is designed as a lower extension of the jacket wall 22. A slight change is only the inclination of the funnel-shaped bottom 20, which is designed here only slightly inclined with a tightening angle of about 5 to 10 °. It is particularly noticeable, however, that the inner annular wall 27, which is now designated 270, is no longer directed from the edge of the outlet of the bottom 20 down to the standing surface 24 but up into the interior of the dosing 2. So the contents of the dosing 2 can escape, this inner ring wall 270 is segmented. Correspondingly, the inner annular wall 270 is made of Reilringwandelemente 271 between which recesses 272 are pulled down to the edge of the spout in the bottom 20. Accordingly, this solution is particularly suitable for dispensing liquid active substances. Thanks to this solution, the membrane, which is designated here as 70, can now be injected in one piece with the base 20. This membrane 70 is designed so thin-walled that the piercing 3 can be punched out by means of its punching sleeve 39, which is referred to here as 390, upon actuation of the piercing member 3. This solution is specially designed for mounting on one Bottle neck, which in turn is hermetically sealed by means of a mounted on the bottle neck membrane. The metering device is in turn screwed onto a now sealed bottle neck. So that the inner ring wall 27 does not already destroy the membrane on the bottleneck when it is screwed on, this inner annular wall, which is now designated 270, is directed upwards, as described above. A downwardly directed annular wall is now no longer necessary because a seal to the neck of the bottle during transport and storage is no longer required, since the bottle, as mentioned, already hermetically sealing sealed remains.

For this solution, it is now necessary that the punching sleeve 30 must be shortened in its axial alignment. This shortened punching sleeve 39 is therefore designated 390. Prior to the first actuation, as shown in FIG. 7, the shortened punching sleeve 390 now lies completely within the upwardly displaced inner annular wall 270. As already mentioned, this allows the membrane 70, which is manufactured integrally with the base 20, can be displaced up to ene level, which binds the outlet of the dosing container 2, after the membrane 70 is separated out. Since, as already mentioned, the inner annular wall 270 through recesses 272, which extend down to the floor 20 in Teilringwandelemente 271st is divided, the content of the dosing 2 can empty completely.

After the membrane 70 has penetrated the membrane 70 through the cutting edge 392 at the lower edge of the shortened punching sleeve 390, it subsequently pierces the membrane (not shown in the drawing) on the bottle neck on which the metering device 1 is screwed. The internal thread 29 on the outer annular wall 28 and the inclined bottom 20, are now sufficient sealing on the bottleneck that no additional seals are required.

Since the punching sleeve 390, compared to the previously written solution is shortened, the connecting walls 391 extend substantially outside the punching sleeve 390 and extend from this up to the closed end 37 of the pipe section 36 and the wall of this pipe section 36th

Only as a further possibility is also shown here that the apron 23 may be configured with an internal thread 290. This also allows the attachment of the inventive dosing device 1 on a bottle with a particularly wide neck. Thus, the inventive metering device can be connected to bottles with different bottleneck diameter. The use of the metering device according to the invention will now be described briefly below. If you want to apply the contents of the inventive dosing device 1 in a standard liter bottle, you first unscrew the screw cap located thereon. Now you screw the dosing on the bottle. Here comes the bottleneck between the inner ring wall 27 and the outer ring wall 28 to lie. The thread 29 fits on the thread of the standard liter bottle. If the metering device 1 is screwed on, then the removable, circumferential edge 42 of the print head 4 is removed. This print head with the separated edge 42 can be clearly seen in FIG. If one now presses on the print head 4, the cylindrical enveloping wall 33 now strikes the predetermined cutting skin 51, as can be seen in FIG. 2a. Thus, the circumferential collar 38 and the part of the pipe section 36 is pressed by severing the predetermined separation skin 51 from the bottom 50 of the top surface 5. The cylindrical envelope wall 33, which presses on the aforementioned Solltrennhaut, does not necessarily need a cutting edge. However, if it is a connection by means of a glued or welded film, it makes sense if the cylindrical envelope wall is designed as a cutting edge 34 at the lower edge. It can additionally be configured with a perforating tooth, not shown here. When pushing down the print head 4, of course, also moves, within the cylindrical Hüllwand 33 arranged only part 31 of the pressure pin, downwards and thus also pushes the second part of the pressure pin 35, which is designed as a pipe section 36, with the punching sleeve 39 downwards. In this case, this punching sleeve separates the glued or welded diaphragm 7. Since the punching sleeve 39 is open on both sides, now creates a communicating connection between the metering 2 and the interior of the bottle. The contents of the dosing 2 thus enters the bottle.

As already mentioned, the inner diameter of the dosing container 2 must in no way coincide with the neck of the bottle, but, thanks to the funnel-shaped bottom 20 of the dosing container 2, is much larger in diameter than the inner diameter of the bottle neck. This means that you can easily deliver much larger quantities despite lower height. In addition, since after initial opening the interior of the dosing container is in communicating connection with the bottle, this content may be greater than the still-to-be-filled cavity in the bottle when it is in its original filling state. The two communicating spaces of the dosing tank 2 and the bottle are now sealed together by the top surface 5 and the cylindrical envelope wall 33, which is integrally formed on the print head 44, sealed. Only when the top surface 44 of the print head 4 is opened, the user can now on the drinking spout 6, the content directly from it drink or pour through the drinking spout. In contrast to the known metering devices, which are able to deliver only a content of about 10 milliliters maximum, it is now possible to also add a content of 50 to even 100 milliliters to the contents of the bottle. This results in completely new applications. Thus, fruit concentrates can be added in high dosage to a mineral water or an isotonic beverage, the light-protected portion remains in the dosing tank 2 until its admixture, while the light-insensitive beverage can be delivered in the bottle.

Reference sign list

1 dosing device

2 dosing tanks

3 piercers

4 printhead

5 top surface of the dosing tank

6 drinking spout

7 membrane

20 funnel-shaped bottom

21 upper edge of the funnel-shaped bottom

22 shell wall

23 apron as lower extension of the shell wall

24 floor space

25 U-shaped collar

26 circumferential gutter

27 inner ring wall

27 ¹ Trim the spout

28 outer ring wall

29 internal thread

30 first part of the puncture 3

31 first part of a pressure pin

32 guide walls

33 cylindrical shell wall

34 cutting edge

35 second part of the piercer 3

36 pipe section as second part of the pressure pin 37 lower closed end of the pipe section 36

38 circumferential collar at the top of the

Pipe section 36

39 punching sleeve

39 ¹ Cutting edge of the punching sleeve

39 ¹¹ Connecting wall

40 printing area

41 flattening

42 peripheral edge, separable

43 cutting seam

50 bottom of the top surface

51 target cuticle

52 Pot wall of the top surface 5

53 bent part of the pot wall

54 stiffening ribs

70 membrane

270 inner ring wall offset upwards

271 partial ring wall elements

272 recesses

291 sealing elements between 23 and 28

390 shortened punching sleeve

391 connecting walls

392 Cutting edge of the punching sleeve 390

Claims

claims

1. Dosing device (1) made of plastic, which is designed for sealing attachment to a bottle neck, comprising a dosing (2) at its exit end before the first opening by means of a, on the opposite, tätigungsseitigem end with a sealingly attached top surface (5) with a filling (6), whereby a pressure pin (31, 35), which is in operative connection with a piercer (3), is passed through the filling (6) and that on the metering container (2) two concentric ring walls (27, 28 are formed, wherein the outer annular wall (28) is provided with an internal thread (29), wherein further the pressure pin (31,35) is connected to a printhead (4), characterized in that the metering container (2) of a cylindrical Mantle wall (22) is formed, the inner surface of which is larger in diameter than the outer surface of the outer annular wall (28) and in that further the bottom (20) of the dosing (2) as Tricht it is designed and the jacket wall (22) at the upper edge 21 of the funnel formed as a bottom (20) adjoins, while below the edge of the shell wall (22) continues as a circumferential skirt (23) and below the level of the two annular walls (27 , 28) and the lower edge of the skirt (23) extends prior to attachment on a bottleneck a base (24) the

Dosing device (1) forms.

2. Metering device according to claim 1, characterized in that the print head (4) is designed dome-shaped and its lower peripheral edge (42) prior to first use on a circumferential U-shaped collar (25) on the jacket wall (22) of the dosing

(2) rests, and wherein this lower edge running

(42) of the print head (4) is separable.

3. Metering device according to claim 1, characterized in that the piercer (3) is in two parts, wherein the first part of the piercer (3) formed on the, directed to the dosing towards the surface of the print head (4), a first part (31) of Pressure pin is and the second part (35) of the piercer (3), designed as a pipe section (36) second part (35) of the pressure pin (3), in which the first part (31) of the pressure pin positively and / or non-positively engages and that at the bottom of the pipe section (36) engages a punching sleeve (39) open on both sides.

4. dosing closure according to claim 3, characterized in that the pipe section (36) has a, at the upper end, circumferential collar (38), in front of the First use with the top surface (5) is separably connected.

5. dosing closure according to claim 4, characterized in that the peripheral collar (38) of the pipe section (36) in one piece, by means of a destructible Solltrennhaut (51), with the top surface (5) is connected.

6. Metering device according to claim 4, characterized in that the peripheral collar (38) of the pipe section (36) is connected by means of a glued or welded film with the top surface (5).

7. Metering device according to claims 3 and 4, characterized in that in the drinking spout (6) is provided a sliding cylindrical enveloping wall (33) with a separating blade (34).

8. Metering device according to claim 7, characterized in that the separating blade (34) by an inclined, to the central axis of the enveloping wall (33), extending cutting plane is formed.

9. Metering device according to claim 7, characterized in that the separating blade extending in a direction perpendicular to the central axis of the enveloping wall (33) Sectional plane runs and at the cutting edge thus formed at least one perforating tooth is formed.

10. Metering device according to claim 3, characterized in that in the inner surface of the drinking spout (6) positive locking means are formed and on the

Outer surface of the envelope wall (33) gegengleiche

Forming means are formed by means of which the envelope wall (33) in an upper and / or lower layer is durable.

11. Dosing device according to claim 3, characterized in that the first part (31) of the pressure pin has a cantilever stop which defines the maximum penetration depth of the first part of the pressure pin in the pipe section (36) of the second part (35) of the pressure pin.

12. dosing closure according to claim 3, characterized in that the pipe section (36) is closed at the lower end.

13. dosing closure according to claim 3, characterized in that at the lower end portion of the pipe section (36) by means of at least one radially outwardly directed connecting wall (39 ¹¹ ), the both sides open cylindrical punching sleeve (39) is integrally formed by means of the membrane closing off the dosing container can be punctured.

14. Metering device according to claim 1, characterized in that the metering container (2) closing diaphragm (7) at the bottom of the inner annular wall (27) is mounted.

15. Metering device according to claim 4, characterized in that the membrane (7) is integrally formed on the lower edge of the inner annular wall (27).

Dosing device according to claim 1, characterized in that the inner annular wall (270) extends from the bottom (20) of the dosing (2) upwards into the dosing and is divided by recesses (272) in partial ring wall elements (721), wherein the punching sleeve (390) lies completely within the annular wall (279) prior to first use, in which it is guided during first use.