EP3034428B1 - Dosing cap for a dosing bottle - Google Patents

Description

The invention relates to a dosing for placing on a dosing with a extending in a longitudinal direction dosing with end-side outlet for a liquid to be dosed.

Such a dosing is for example from the DE 41 17 220 C1 refer to.

Out DE 10 2004 040 099 A is a dosing with the features of the preamble of claim 1 is known. Also US 5,246,145 discloses such a dosing cap.

Dosing bottles for dosing liquids of different viscosities are used in a wide variety of areas, such as in hygiene articles, in the food sector or in the medical-pharmaceutical sector. Sometimes the most accurate possible, even dropwise metering or even the most dense closing is desired.

For example, in the food industry, elastic, compressible metering bottles with a metering cap are known, wherein a slotted metering membrane is introduced into the metering cap as an additional element through which the metered, often viscous liquid is pressed at a pressure on the metering bottle. However, this additional membrane leads to an increased effort in the production and thus to increased costs. A dosing bottle with a membrane integrated in a dosing cap can be removed, for example WO 2011/031985 A2 ,

Dosiereinsätze with projecting into their interior dosing are in EP 594 490 A and WO2012 / 063798 A described.

In the field of personal care products nowadays caps are used, which are usually formed from a base body, which has an outlet opening, for example, for a personal care product. The main body can be closed by means of a lid, for which purpose a closure sleeve or a closure pin is regularly introduced into the outlet opening. The entire cap is often designed as a one-piece plastic injection molded part, in which therefore the lid during injection molding, for example is integrally formed on the base body via a film hinge. In addition, the lid can also be designed as a separate part, for example as a screw cap. Such caps are often formed as so-called bounce seals, which are aufprellt on a corresponding bottleneck.

The outlet opening is regularly formed by a cylindrical outlet, which usually has a diameter of, for example, three or more millimeters. At the cylindrical outlet is often followed by a conical extension, which usually has a comparatively large cone angle of for example 45 °.

Proceeding from this, the object of the invention is to provide a dosing cap which is inexpensive to produce, by means of which dropwise dosing is also possible.

The object is achieved according to the invention by a dosing with the features of claim 1.

The dosing cap serves for placing on a dosing bottle and has a dosing channel extending in the longitudinal direction as far as an end-side outlet opening. For this purpose, the metering channel has a first and a second metering section, which adjoin one another in the longitudinal direction. The first metering section is reduced to a metering diameter which is in the range of 0.2 mm to 1.2 mm. At the same time, the metering diameter forms the smallest diameter of the entire metering channel. At the first metering section with the metering diameter, the second metering section connects to the first metering section to form a step. By this configuration, therefore, first the area of the dosing with the smallest Dosierdurchmesser, ie a metering, spaced from the end-side outlet portion and the outlet opening. The choice of the small metering diameter basically allows the possibility of only dropwise metering. Of particular importance is the adjoining the metering diameter second metering with the enlarged Diameter. By this namely, an unwanted escape of liquid residues from the outlet opening, for example. After a dosing avoided, even if the metering bottle provided with such a dosing is stored upside down. Essential for this is in addition to the small dosing diameter and the widespread second dosing. Investigations have shown that any drops unintentionally emerging from the first metering section through the metering opening are collected and retained in the second metering section.

Of particular importance here is that the function of the particular droplet-wise dosage of aqueous liquids and continue to ensure the function of tight closure when not in use solely by the design of the metering. Other additional closure elements, such as a membrane, are not arranged. The dosing cap is therefore free of such further closure elements, in particular it is membrane-free.

Due to the step-like configuration between the two metering sections, a process-reliable and simple production of such a metering cap as an injection-molded part is also made possible. The step-like transition defines a tool parting plane between two punches forming the two metering sections. This embodiment is based on the consideration that for a simple cost-effective production of the dosing with the dosing an injection molding process is suitable. However, in injection molding, metering orifices can only be realized by means of corresponding punches in the injection molding tool. For reasons of sufficient stability, in particular for process-reliable continuous production, these punches usually have a minimum diameter of 1.5 mm, which is too large for the desired metering opening.

In order to enable the fine structure of the first metering section is provided for producing the metering cap in the context of an injection molding process, that tooling initially for the formation of the metering further initially first punch with sufficient diameter is used for the second metering section. In addition, to form the first metering section with the end-side metering opening with the small metering diameter, a second punch with only a small diameter is used, which defines the diameter of the metering opening. During the injection molding process, the second stamp, which has only a low stability, is supported on the first stamp. The two punches are therefore introduced from opposite sides and define a dividing plane between them. By this measure, therefore, on the one hand sufficient stability of the tool, in particular the stamp achieved, on the other hand, the metering can be formed with a sufficiently small metering diameter. Overall, this creates a possibility to produce a dosing cost, which also reflected in the special design of the dosing.

Overall, a Dosierkappe is provided with the embodiment described here, with which without problems even in aqueous liquids, a dropwise dosage or - when using elastic, squeeze ble bottles - when pressure on the bottle and a Dosierstrahl set. Conveniently, it is provided that the entire dosing is formed as a one-piece plastic injection molded part. It is therefore not necessary to connect several parts.
Preferably, the metering diameter is in a range between 0.2 and 1.2 mm, in particular it is limited to a maximum of 0.8 mm. The choice of the specific metering diameter depends on the field of application, in particular of the liquid to be metered.
Especially for low-viscosity liquids, the dosing diameter is limited to a maximum of 0.4 mm and in particular to 0.25 mm. With these small metering diameters, a passage of the liquid is reliably avoided. In terms of manufacturing technology, however, such small diameters are very sensitive, since correspondingly required punches are very fine. In order to ensure reliable production, it is therefore provided, in particular with these small metering diameters, that the first metering section tapers, starting from a first inlet diameter, in particular conically under a cone angle, the first entry diameter being at least 1.4 mm and preferably at least 1.8 mm. The ratio of the first inlet diameter to the metering diameter is preferably above 5, in particular above 8. The cone angle is preferably above the value for typical Entformungsschrägen and is in particular above 8 ° and for example in the range of 10-15 °. In this way, a frusto-conical first metering section is created, which has at its base a sufficient width, which corresponds to a sufficiently stable punch width. Overall, the dosing is formed elongated.

In a preferred development, the first metering section has at its end a first cylindrical intermediate section. Due to the elongated, conical region of the first metering section, which tapers to the metering diameter, a strong slowing down of the flow of the liquid is initially achieved. Investigations have now shown that the adjoining cylindrical intermediate section, which thus has only the metering diameter, has a favorable effect on an unwanted escape of liquid. In this respect, this cylindrical intermediate section defines a first collecting space for the liquid in order to prevent it from emerging from the outlet opening at the end. The length of the cylindrical intermediate portion is preferably approximately in the range of Dosierdurchmessers.

In order to reliably avoid unwanted leakage of liquid components, the second dosing section has, in an expedient embodiment, an intermediate region with a reduced diameter. This intermediate region is formed in particular in the manner of a constriction, in the region of the intermediate region is therefore, for example, a circumferential web formed, so that the second metering is constricted in total ringnutartig. In the area of this Constriction reduces the diameter of the second Dosierabschnitts for example. By 10% to 20%.

Conveniently, a second, in particular cylindrical, intermediate section adjoins the intermediate region with a reduced diameter. The intermediate region and the intermediate section of the second metering section are in this case formed on the end, in particular in the last quarter of the second metering section.

The intermediate area has a reduced diameter of max. 1.0 mm to 1.5 mm in particular of about 1.2 mm. However, the reduced diameter is above the metering diameter. The second metering section itself is preferably likewise conical, like the first metering section, with the difference that it widens conically in the longitudinal direction, that is to say in the direction of the outlet opening.

Both the first and the second metering section are therefore preferably formed approximately in the shape of a truncated cone. They have a cone angle, which lies in the range between 1.5 ° to 5 °. The term "cone angle" is understood to mean the angle at which-as viewed in a longitudinal section-a respective boundary of the respective metering section is inclined in relation to a central longitudinal axis and thus in relation to the longitudinal direction.

In an expedient embodiment, at least one, in particular the first metering section and preferably both metering sections are formed elongated. So they have a length which is a multiple, in particular more than three or four times the respective minimum diameter of the respective metering section. As a result, a comparatively large path length is created overall, which reliably prevents in particular unwanted leakage of liquid.

The outlet opening itself has an exit diameter, which is usually greater than or equal to 1.5 mm and in particular in the range of 1.5 mm to 2.5 mm.

The outlet opening is part of an outlet section of the metering channel, wherein the outlet section in turn has a larger diameter than the second metering section. In particular, the outlet section adjoins the second dosing section to form a second step.

If in the present case a respective section of the metering channel has a larger diameter than a preceding section, this means that an enlarged diameter is present in the transition region between the two sections. However, due to the conical configuration of the two metering sections, it is not absolutely necessary that the largest diameter, for example, of the first metering section is larger than the smallest diameter of the second metering section.

With regard to the most exact possible droplet-wise dosage of the outlet section ends at the outlet preferably sharp-edged. This is understood to mean, in particular, that no conical enlargement is formed in the region of the outlet opening. As a result, therefore, a kind of spoiler edge is formed. According to the invention, the dosing cap comprises a bottle neck collar designed in the manner of an apron, which surrounds an interior space. In this interior, a dosing, which has the metering channel extends. Furthermore, the metering pin is part of a metering element, which extends in total through a frontal lid base, so that the metering outside of the outside of the lid bottom forms a metering tip in the manner of a dome-like elevation. In particular, the bottle neck collar is an inner apron which is usually additionally surrounded by an outer bottle neck collar and this in turn is surrounded by an outer wall. The bottleneck collar is designed as an annular collar. About this is insofar also a dosing anteroom formed for the liquid to be dosed. If the dosing cap is placed on the dosing bottle, the bottleneck collar usually engages precisely in a bottleneck of the dosing bottle, so it is preferably in a flush and sealing manner against a cylindrical (inner) surface of the bottle neck. This ensures that the liquid to be dispensed exits exclusively via the metering opening. The collar in this case preferably has a conical sealing slope on the end side. The collar extends longitudinally over, for example, 8 mm to 20 mm, and typically over about 10 mm to 15 mm.

With a view to the simplest possible assembly, the dosing cap is formed in a preferred development as a bounce cap. The dosing cap is therefore placed by simply bouncing on the neck of the bottle. A screwing etc. is not required. Alternatively, the principle of the embodiment described here for the dosing element can in principle also be transferred to screw closures of any type.

In an expedient development, the dosing cap additionally has a closure lid, which sealingly seals the outlet opening in the closed state. This additionally ensures that, for example, during transport or even with a tilting of the dosing no liquid escapes from the bottle.

Figur 1

eine Schnittansicht durch eine Dosierkappe einer ersten Ausführungsvariante entlang der Schnittebene A-A gemäß Figur 4

Figur 2

eine Schnittansicht gemäß der Schnittlinie B-B gemäß Figur 4,

Figur 3

eine vergrößerte Detailansicht eines Schnittes durch die Verschlusskappe einer zweiten modifizierten Ausführungsvariante ähnlich der Variante gemäß Fig. 1 sowie

Figur 4

eine Aufsicht auf die Dosierkappe mit Grundkörper und Verschlussdeckel bei geöffnetem Verschlussdeckel.

For the tight closing of the outlet opening, the closure lid has a closure pin according to a first embodiment variant which, in the closed state, ie when the closure lid is closed, rests in the outlet section and seals it. The closure pin extends maximally to the second metering section. In particular, it can also be provided that it is supported at the second stage between the second metering section and the outlet section, thereby forming a sealing surface. Alternatively or additionally, the closure pin seals circumferentially from the peripheral wall of the outlet section. The length of the plug pin expediently has a length corresponding to the length of the outlet section with regard to a seal at the step. With regard to a circumferential seal, the closure pin has a diameter which corresponds to the diameter of the outlet section. Conveniently, the closure pin generally has a certain excess, so that it is so pressed in the closed state and forms a sealing seat. The closure pin is generally adapted to the contour of the outlet section. If necessary, it can also have partial bulges on its peripheral side, for example, slight bulges in order to form quasi a ring seal there.
For sealing sealing, the closure lid has, alternatively or additionally, an integrally formed sealing sleeve, which is sealingly slipped over an end section of the dosing channel. This end portion is designed in particular as a dome-shaped metering tip. In this case, the dosing tip in a preferred embodiment in the region of the outlet opening has a convexly curved sealing surface, over which the sealing sleeve is sealingly pushed over when the closure lid is attached.
The closure lid is formed overall as a preferably hinged via a film hinge hinged closure cap and is thus a portion of the metering cap forming one-piece injection-molded component. The entire cap comprising the dosing cap and cap is therefore a monolithic, one-piece component, which can be produced inexpensively.
An embodiment of the invention will be explained in more detail with reference to FIGS. These show:

FIG. 1

a sectional view through a dosing of a first embodiment along the sectional plane AA according to FIG. 4

FIG. 2

a sectional view according to the section line BB according to FIG. 4 .

FIG. 3

an enlarged detail view of a section through the closure cap of a second modified embodiment similar to the variant according to Fig. 1 such as

FIG. 4

a view of the dosing with body and lid with open cap.

In the figures, equivalent parts are each provided with the same reference numerals.

The in the FIGS. 1 to 4 Dosing cap 2 shown comprises a base body 4 and a closure lid 6, which forms a common, monolithic injection molded part together with the base body 4. The closure lid 6 is connected via a film hinge 8 pivotally connected to the base body 4. The dosing cap 2 is further formed in the embodiment as a bounce cap, which is attached by a simple bouncing on a bottleneck on a dosing bottle not shown here. The metering bottle is, for example, an elastic plastic metering bottle, which is provided, for example, for holding liquid foods, liquid hygiene articles, liquid pharmaceutical products or medicaments. About the dosing 2 while dosing the liquid contained in the bottle is possible. Liquid is understood to mean both an aqueous and a viscous mass.

The base body 4 has to be placed on the bottleneck of the dosing an inner annular Flaschenhalskragen 10 and an outer annular Flaschenhalskragen 12, between which in the mounted state of the bottle neck of the dosing is absorbed as possible sealing. In addition, the main body 4 still has a peripheral outer jacket 14. This goes on the front side in a substantially horizontally extending forehead bottom 16. The forehead bottom 16 is penetrated by a metering element, which internally forms a metering pin 18A and externally a metering tip 18B. The dosing tip 18B rises like a dome from the forehead bottom 16, whereas the dosing pin 18A extends pin-shaped into an interior space 19 formed by the inner bottle neck collar 10. In the metering element, a metering channel 20 extending in a longitudinal direction Z is formed.

The metering channel 20 itself comprises several sections, as can be seen in particular Fig. 3 can be removed. Namely, a first metering section 22, a second metering section 24 and a front outlet section 26, which has a front-side outlet opening 28 of the metering channel 20. Further sections, the metering channel 20 preferably not on.

The individual sections 22,24,26 are arranged concentrically to each other, therefore, extend along a common center axis M. The metering channel 20 has over its entire length in each case a circular cross-sectional area. The first metering section 22 and the second metering section 24 are in the first embodiment of the Fig. 1 each formed as a slightly conical channels with a cone angle γ. This is preferably between 1 ° and less than 5 ° and in the embodiment in particular at 1.5 °. The cone angle γ indicates the inclination of the wall of the metering section 22, 24 with respect to the center axis M.

In the second embodiment according to Fig. 3 In contrast, a significantly larger cone angle γ of about 10 ° is set for the first metering section 22, so that in comparison to the variant according to FIG Fig. 3 significantly steeper truncated cone is formed as metering 22. In contrast, the cone angle of the second metering section 24 is significantly smaller and lies in particular in the region of the first variant of FIG Fig. 1 ,

The first metering section 22 has a first cylindrical intermediate section 30 at the end toward the second metering section 24 in the first embodiment variant. At this or at the end of the conical area ( Fig. 3 ) joins to form a first stage 32 of the second metering 24. In turn, in its end region, this first has an intermediate region 34 and, subsequently, a second, in particular cylindrical, intermediate section 36. In turn, this is followed by the formation of a second stage 38 of the outlet section 26 at.

The narrowest point of the metering channel 20 is formed at the end of the first metering section 22 at the first stage 32. There, the metering channel 20 a Dosing diameter d1 and therefore forms a metering. The metering diameter d1 is preferably in the range between 0.2 mm, in particular between 0.4 mm and 1.2 mm. In the embodiment of Fig. 1 it is preferably 0.6 mm. In the preferred embodiment of Fig. 3 it is in the range between 0.2 mm and 0.4 mm and in particular at 0.25 mm. The first metering section 22 tapers continuously from a first inlet diameter d2 to the metering diameter d1. In the first embodiment of the Fig.1 the first inlet diameter d2 is in the range between 0.7 mm and 1.2 mm, in particular at 0.9 mm. In particular, it tapers approximately by a factor of 1.5 to 0.6 mm of the dosing diameter d1.

In contrast, the first inlet diameter d1 is in the preferred variant of Fig. 3 significantly above and is especially at about 2.0mm. It therefore tapers approximately by a factor of 8 to 0.25 mm of the dosing diameter d1. This second embodiment variant is also suitable for less liquid dosing liquids and at the same time ensures reliable production of the closure flap 2 in an injection molding process.

The second metering section 24 finally widens conically from a second inlet diameter d3 at the first step 32 to a final diameter d4 at the second step 38. The second inlet diameter d3 is significantly larger than the metering diameter d1 and is for example approximately the same. times the dosing diameter d1. In the exemplary embodiment, the second inlet diameter d3 is about 1.2 mm. The second metering section 24 then spreads conically to about 1.3 mm to 1.8 mm and in the exemplary embodiment to 1.5 mm.

In the intermediate region 34, the metering channel 20 has a constriction, which is formed in the embodiment by a concave annular groove in the channel 20. In this area, the second metering section 24 has a reduced diameter d5, which in the exemplary embodiment is in the range between 1.0 mm and 1.3 mm and preferably 1.2 mm.

Finally, the outlet section 26 has at its end the outlet opening 28 with an outlet diameter d6 which lies in the range between 1.5 mm and 2.5 mm and in the exemplary embodiment at approximately 2.0 mm. The outlet portion 26 is formed approximately cylindrical, but may also be slightly conical as the other portions 22, 24.

In principle, in addition to the intermediate region 34, further intermediate regions with reduced diameters may be formed, for example also in the outlet section 26 and / or a further intermediate region 34 in the second dosing section 24.

As in particular from Fig. 3 can be seen, it is in the two metering sections 22, 24 are very elongated channel sections. The first metering section 22 has a first length L1 and the second metering section 24 has a second length L2. These lengths L1, L2 are each a multiple of the smallest diameter of the respective section 22, 24 thus a multiple of the metering diameter d1 and the second inlet diameter d3. In the exemplary embodiment, the lengths L1, L2 are in each case more than 5 times this smallest respective section diameter. For very small diameters, especially for small dosing d1, for example according to Fig. 3 the length L1 is also more than 10 times and in particular more than 15 times the smallest section diameter. The lengths L1, L2 are typically in the range of 3mm to 7mm and in particular in the range of 4mm to 6mm.

The individual subregions of the respective metering sections 22, 24, namely the two intermediate sections 30, 36 (if present) and the intermediate section 34, are not formed as elongated sections, ie their length in the longitudinal direction Z is smaller than their diameter or corresponds to a maximum essentially their diameter.

The same also applies to the outlet section 26, whose length in the longitudinal direction Z preferably corresponds at most approximately to the outlet diameter d6.

The outlet section 26 is sharp-edged in the region of the outlet opening 28, that is to say it has a kind of trailing edge on the end. This favors a defined drop formation.

The entire metering channel 20 has an overall length L, which in the exemplary embodiment is about 10 mm to 15 mm. The two dosing sections 22, 24 together form about 70 to 90% of the total length L.

In order to ensure a permanently tight closure of the outlet opening 28 with closed closure lid 6 even under adverse conditions, for example during transport, the closure lid 6 in the exemplary embodiment has two sealing elements. On the one hand, this is a sealing sleeve 40 and, on the other hand, a closure pin 42, which is surrounded annularly by the sealing sleeve 40 (cf. Fig. 2 ). Sealing sleeve 40 has an inner diameter which is adapted to an outer diameter of dosing tip 18B. The inner diameter preferably has a slight undersize and sealing sleeve 40 is preferably slightly conical, so that when placed on dosing tip 18B it seals against its peripheral wall clings to a ring.

The locking pin 42 has an outer diameter which is adapted to the outlet diameter d6. Preferably, it has a slight excess to this, so that the closure pin 42 sealingly abuts with its peripheral side on the peripheral wall of the outlet portion 26. The locking pin 42 has an axial length which is less than or equal to the length of the outlet portion 26.

As a result of the configuration of the metering channel 20 described here as a whole, an exact, even dropletwise, metering of liquids is made possible. At the same time an undesirable leakage of the liquid is avoided. In this case, a process-reliable production of the dosing cap 2 is achieved. The dosing cap 2 is formed as a one-piece plastic injection molded part without additional closure elements.

The special form of the dosing channel 20 described here can be reliably ensured despite the small dosing diameter d1 of only 0.6 mm (FIG. Fig. 1 ) or of only 0.25 mm ( Fig. 3 ) using an injection molding tool not shown here.

For producing an injection mold is used which has an upper mold and a lower tool mold, between which a cavity is formed, is injected into the injection molding material for forming the dosing cap 2.

At the one tool mold, a first punch is arranged, which forms the first metering section 22. The other tool mold has a second punch, which is designed to form the second metering section 24 and the exit section 26. The two punches abut each other at a parting plane. The first punch with only a small dosing diameter is supported on the second punch, whereby a sufficiently high stability for the injection molding is achieved. In addition, the punches can be designed such that they engage in one another in a form-fitting manner, so that the first punch is held on the second punch 44 in a form-fitting manner. LIST OF REFERENCE NUMBERS 2 capful L1 first length 4 body L2 second length 6 cap L3 overall length 8th film hinge γ cone angle 10 Inner bottleneck collar 12 Outer neck collar 14 outer sheath 16 cover ground 18A dosing pin 18B Dosierspitze 19 inner space 20 metering 22 first metering section 24 second metering section 26 exit section 28 outlet opening M mid-axis 30 first intermediate section 32 first stage 34 intermediate area 36 second intermediate portion 38 second stage 40 sealing sleeve 42 Verschlusszapfen d1 Dosierdurchmesser d2 first entry diameter d3 second inlet diameter d4 final diameter d5 reduced diameter d6 Outlet diameter

Claims (15)

1. Dosing cap (2) for fitting on a dosing bottle having a dosing channel (20) extending in a longitudinal direction (Z) having an outlet opening (28) at the end side for a liquid that is to be dosed and that has a bottle-neck collar (10) which surrounds an inner space (19) and that has a dosing element, the dosing channel 20 being formed to extend in the longitudinal direction thereof, characterised in that the dosing element has a dosing pin (18A) and a dosing tip (18B), wherein the dosing pin (18A) extends into the inner space (19) and the dosing element extends through a lid base (16) on the end face such that, outside an outer side of the lid base, the dosing element forms the dosing tip in the manner of a dome-like elevation,

   - the dosing channel (20) has a first dosing section (22) that tapers in the longitudinal direction (Z) up to a dosing diameter (d1), wherein the dosing diameter (d1) ranges from 0.2mm to 1.2mm,

   - the dosing channel (20) further has a second dosing section (24) that connects to the first dosing section (22) in the longitudinal direction (Z) by forming a first step (32) and has a larger diameter (d3, d4) in comparison to the dosing diameter (d1).
2. Dosing cap (2) according to claim 1,
   characterised in that
   the dosing diameter (d1) is a maximum of 0.8mm and, in particular, a maximum of 0.4mm or a maximum of 0.25mm.
3. Dosing cap (2) according to one of the preceding claims,
   characterised in that
   the first dosing section (22) tapers in particular conically at a taper angle (γ) in the direction towards the dosing diameter (d1) starting from a first inlet diameter (d2), wherein the first inlet diameter (d2) is a minimum of 1.4mm and, in particular, a minimum of 1.8mm.
4. Dosing cap (2) according to one of the preceding claims,
   characterised in that
   the first dosing section (22) has a first cylindrical intermediate section (30) on the end side.
5. Dosing cap (2) according to one of the preceding claims,
   characterised in that
   the second dosing section (24) has an intermediate region (34) with a reduced diameter (d5).
6. Dosing cap (2) according to the preceding claim,
   characterised in that
   the second dosing section (24) further has a second intermediate section (36) on the end side which is arranged subsequently to the intermediate region (34).
7. Dosing cap (2) according to one of the two preceding claims,
   characterised in that
   the intermediate region (34) has a reduced diameter of a maximum of 1.0mm to 1.5mm, and in particular of 1.2mm.
8. Dosing cap (2) according to one of the preceding claims,
   characterised in that
   the two dosing sections (22, 24) are formed to be elongated and each have a length (L1, L2) that is a multiple of, in particular more than three or four times, a minimum diameter (d1, d3) of the respective dosing section (22, 24).
9. Dosing cap (2) according to one of the preceding claims,
   characterised in that
   the outlet opening (28) has an outlet diameter (d6) ranging from greater than or equal to 1.5mm and, in particular, to 2.5mm.
10. Dosing cap (2) according to one of the preceding claims,
    characterised in that
    the dosing channel (20) has an outlet section (26) which is arranged subsequently to the second dosing section (24) in the longitudinal direction (Z), has the outlet opening (28) and a larger diameter (d6) in comparison to the second dosing section (24).
11. Dosing cap (2) according to the preceding claim,
    characterised in that
    the outlet section (26) is connected to the second dosing section (24) by forming a second step (38).
12. Dosing cap (2) according to one of the two preceding claims,
    characterised in that
    the outlet section (26) ends with a sharp edge on the outlet opening (28).
13. Dosing cap (2) according to claim 1,
    characterised in that

    - the second dosing section (24) has an intermediate region (34) with a reduced diameter (d5),

    - the second dosing section (24) further has a second intermediate section (36) on the end side, which is arranged subsequently to the intermediate region (34),

    - the dosing channel (20) has an outlet section (26) which is arranged subsequently to the second dosing section (24) in the longitudinal direction (Z), has the outlet opening (28) and has a larger diameter (d6) in comparison to the second dosing section (24),

    - the outlet section (26) connects to the second dosing section (24) by forming a second step (38).
14. Dosing cap (2) according to one of the preceding claims,
    characterised in that
    it is formed as a bounce closure cap.
15. Dosing cap (2) according to one of the preceding claims,
    characterised in that
    it has a closure lid (6) that sealingly closes the outlet opening (28) in the closed state and, to do so, at least one of the elements has a closing pin (42) or sealing sleeve (40), wherein, in the closed state, the closing pin (42) is inlaid in the outlet opening (26) in a sealing manner and the sealing sleeve (40) sealingly surrounds a dosing tip (18B) having the dosing channel (20) in the closed state.

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