DE102016224222B4 - Dosing and closing device for bottles and cap closure - Google Patents

Abstract

A dispensing closure device for bottles, in particular for storage and dispensing of liquid pharmaceuticals, comprises a bottle neck (7) of the bottle (1), a multi-part cap closure (2, 2 ') mounted on the bottle neck (7), - a Inner cap (3) with a mounting element (5) for attachment to the bottle neck (7), an outlet opening (9) for the bottle contents, and a sealing membrane (10, 10 ') for closing the outlet opening (9), and an outer cap (4) with a metering device, a lid (23) for the metering device and a separating device (28) for the sealing membrane (10, 10 '), wherein the outer cap (4) longitudinal axial relative to the inner cap (3) between a storage position and a dispensing position for the bottle contents displaced is mounted thereon and in the transfer of the outer cap (4) between the storage position and the dispensing position, the separating device (28) the sealing membrane (10, 10 ') severed to open the outlet opening and wobe i the outer cap (4) about a limited angle of rotation (D) about the rotation axis (R) rotatably mounted on the inner cap (3), wherein for the initial opening of the cap closure (2, 2 ') in the transfer from the storage position to the dispensing position the outer cap (4) relative to the inner cap (3) against the closing direction (S) over the limited angle of rotation (D) to a second rotation stop (35) is rotatable, in which stop position, the locking of the outer cap (4) in the longitudinal direction of displacement (V ) and the outer cap (4) longitudinally displaceable while destroying the sealing membrane (10, 10 ') by means of the separating device (28) and opening the outlet opening (9) relative to the inner cap (3) displaceable and in this discharge position in the longitudinal axial direction by an axial locking device (42).

Description

The invention relates to a metering-closure device for bottles, in particular for storage and dispensing of liquid pharmaceuticals, according to the preamble of claim 1 and a cap closure which can be used for this purpose according to the preamble of claim 14.

A corresponding metering-closure device comprises on the one hand for reference as belonging to the subject of the protection a bottle neck of the bottle in which a corresponding liquid, such as a liquid pharmaceutical, is stored and dispensed therefrom. On the bottleneck, on the other hand, a multi-part cap closure is mounted.

Such metering-closure devices are known in many different embodiments. Thus, child-resistant cap closures are typically provided in several parts with an inner cap and an outer cap, the latter being able to be engaged by pressing against a spring force with the inner cap and then unscrewing the cap closure.

Other metering-sealing devices, for example, provide metering devices, especially in the form of a dropper pipette, to enable the dropwise delivery of, for example, a liquid pharmaceutical.

In the context of the present invention, the focus is on dosing-closure devices having a dosing device. Very common in this context, for example, dropper inserts or dropper pipettes, which are used in the bottle neck of the bottle. Such a bottle is then closed with a screw-on cap.

The problem with such metering-Verschlusseinrichtungen is the fact that in the storage of such a bottle, for example in a lying position, the bottle contents with the metering device in the bottle neck is constantly in contact. Over time, this can lead to migration effects, so that isolated or even more active ingredients of the pharmaceutical migrate into the matrix of the usually consisting of plastic material metering device. This effect is detrimental to the quality of the bottle contents.

From the printed prior art, namely the JP 2015 - 034 011 A or the WO 2008/029585 A1 Locking devices are known in which the inner cap of the closure device with a mounting element for attachment to the bottle neck, an outlet opening for the bottle contents and - provided as a migration barrier - a sealing membrane for closing the outlet opening. Furthermore, an outer cap is provided with a metering device, in particular a dropping pipette, a cover for the metering device and a separating device for the sealing membrane. The outer cap is slidably mounted thereon by a screw thread longitudinally and forcibly coupled in the direction of rotation relative to the inner cap between a storage position and a dispensing position for the bottle contents. During the transfer of the outer cap between the storage position and the dispensing position, the separating device cuts through the sealing membrane and thus opens the outlet opening. This can be dispensed from the bottle via the metering device with the lid open, for example, dropwise liquid pharmaceutical from the bottle.

As is clear from the above features, while the storage condition of the metering-closure device of the bottle neck with the bottle volume through the sealing membrane of the metering device is indeed separated, so that the above-mentioned migration effect of active ingredients in the metering device and its surrounding parts of the cap closure is reliably prevented, however, the prior art locking devices appear in need of improvement in terms of safety and ergonomics.

The solution of this problem is given by the features stated in the characterizing part of claim 1 or14. It is provided with rotatable mounting of outer to inner cap about the axis of rotation for the initial opening of the cap closure rotation opposite to the closing direction over a limited angle of rotation up to a second rotation stop. Upon reaching this second stop position then the locking of the outer cap is removed in the longitudinal axial displacement direction and the outer cap can be moved longitudinal axial destruction of the sealing membrane by means of the separator and opening the outlet opening relative to the inner cap. By axial locking the outer cap is then fixed in this dispensing position relative to the inner cap. The metering-closure device is now ready for use by controlled with the lid open via the metering a liquid pharmaceutical can be dispensed drop by drop, for example.

In the dependent claims preferred developments of the metering closure device are given. Thus, the sealing membrane may be integrally formed from the material of the inner cap, preferably predetermined breaking points between the sealing membrane and the inner cap may be provided. This provides an equally reliable, as well as easy to install Migration barrier, since the sealing membrane formed together with the inner cap, for example, in an injection molding process and then the inner cap must be screwed only on the bottleneck.

An alternative is a sealing membrane in the form of a hermetically applied to the outlet opening of the inner cap film closure. Here, although a separate manufacturing step for attaching the sealing membrane is necessary, on the other hand, the membrane material, regardless of the material of the inner cap can be more specifically adapted to requirements that arise from the bottle contents For example, a particularly high volatility, sensitivity, aggressiveness, etc. of the liquid stored in the bottle.

By a tightly resting on the bottleneck, surrounding the outlet opening sealing lip on the inner cap, the reliable storage and permanent inclusion of the liquid in the bottle is guaranteed as well as a clean delivery through the metering device.

According to a further preferred embodiment, the separating device is formed on the outer cap by a separating crown piercing the sealing membrane during its axial displacement movement, which is arranged around the metering device and whose outer diameter is slightly smaller than the inner diameter of the outlet opening. This separation crown thus ensures a large-area opening of the outlet opening by shearing the sealing membrane, which still sticks at one point of their attachment to the inner cap and thus kept clean outside the separation crown during the remaining useful life of the bottle.

In order to reliably prevent liquid from penetrating between the inner and outer cap when liquid is dispensed from the bottle, a guide ring which surrounds the outlet opening and abuts the separating crown on the outside is provided on the upper side of the inner cap in a preferred development. This has a sealing and leading function for the separation crown, which benefits a defined operability of the outer cap when transferring from the storage position to the dispensing position.

According to a preferred embodiment of the invention, the outer cap and inner cap are locked to each other for Erstschraubmontage of the cap closure in the storage position on the bottleneck outer cap and inner cap by a first rotation stop in the closing direction and in the longitudinal axial displacement direction. This ensures that on the one hand the cap closure can be screwed on the bottleneck with a defined torque, but at the same time the cap closure is also protected against unintentional opening of the sealing membrane by longitudinal axial displacement of the outer cap relative to the inner cap.

In order to make the transition from storage position to dispensing position even more defined and reliable, the outer cap can be drehrehetiert in the stop position at the end of the rotational movement against the closing direction by an additional locking device in the invention. The latter consists in a preferred embodiment by at least one, preferably three to four evenly distributed over the circumference of the cap closure, internally formed on the outer cap locking lamellae, which are provided with a locking edge facing in the closing direction. To cooperate with these locking lamellae on the inner cap against the closing direction outwardly increasing locking ramps are provided, the locking edges are engaged behind in the dreharretierten stop position of the locking edges of the locking lamellae. This preferred embodiment represents a reliable, structurally simple construction method for the latching device.

The latter can be advantageously equipped with a dual function by the latching device is designed so that when transferring the locking edges of the locking plates behind the locking edges of the locking ramps a signal noise, so for example a typical click, is generated for the acoustic display of Verrastens. A user recognizes thereby that the outer cap is spent in the correct position for depressing and opening.

In order to keep the outer cap in the longitudinal axial shifted dispensing position, between the outer cap and inner cap according to a further preferred embodiment an axial locking in the form of formed on the inner wall of the outer cap locking projections which engage in the locked position of the outer cap on the outside of the inner cap integrally formed locking webs.

In a further preferred embodiment, finally, the lid can be hinged to the outer cap as a hinged lid on a film hinge.

The invention further relates to a cap closure for use in a bottle dispensing closure comprising an inner and outer cap having the features of claim 1 for connection to a bottle neck. To avoid repetition, reference is made to the above representation of the features of claim 1.

• 1 einen Rotationsaxialschnitt einer Flasche mit einer Dosier-Verschlusseinrichtung in einer ersten Ausführungsform,
• 2 eine perspektivische Ansicht der Dosier-Verschlusseinrichtung mit weggebrochenem Kappenverschluss,
• 3 einen Querschnitt des Kappenverschlusses gemäß Schnittlinie III-III nach 1,
• 4 eine Draufsicht auf den Kappenverschluss gemäß Pfeilrichtung IV nach 1,
• 5 eine vergrößerte Schnittdarstellung der Einzelheit V nach 3,
• 6 einen Querschnitt analog 3 in einer entgegen der Schließrichtung verdrehten Zwischenstellung der Außenkappe relativ zur Innenkappe des Kappenverschlusses,
• 7 eine vergrößerte Schnittdarstellung der Einzelheit VII gemäß 6,
• 8 eine perspektivische Ansicht des Kappenverschlusses mit teilweise weggebrochener Außenkappe in einer Relativposition von Innen- und Außenkappe während der Erstmontage,
• 9 einen vergrößerten Ausschnitt der weggebrochenen Zone gemäß 8 in einer Zwischenstellung von Außen- und Innenkappe bei der Erstöffnung des Kappenverschlusses,
• 10 einen Rotationsaxialschnitt der Flasche in der verrasteten Abgabeposition der Außenkappe relativ zur Innenkappe des Kappenverschlusses,
• 11 einen Querschnitt des Kappenverschlusses entlang der Schnittlinie XI-XI nach 10,
• 12 einen vergrößerten Axialschnitt gemäß der Einzelheit XII nach 10, sowie
• 13 eine perspektivische Ansicht einer Dosier-Verschlusseinrichtung mit teilweise weggebrochenem Kappenverschluss in einer alternativen Ausführungsform.

Further advantages and details of the invention will become apparent from the following description of embodiments with reference to the accompanying drawings. Show it:

• 1 a rotational axial section of a bottle with a metering closure device in a first embodiment,
• 2 a perspective view of the metering closure device with broken cap closure,
• 3 a cross section of the cap closure according to section line III - III to 1 .
• 4 a plan view of the cap closure according to the arrow IV to 1 .
• 5 an enlarged sectional view of the detail V to 3 .
• 6 a cross section analog 3 in an intermediate position of the outer cap, rotated counter to the closing direction, relative to the inner cap of the cap closure,
• 7 an enlarged sectional view of the detail VII according to 6 .
• 8th a perspective view of the cap closure with partially broken outer cap in a relative position of inner and outer cap during initial assembly,
• 9 an enlarged section of the broken-away zone according to 8th in an intermediate position of the outer and inner cap during the first opening of the cap closure,
• 10 a rotational axial section of the bottle in the latched dispensing position of the outer cap relative to the inner cap of the cap closure,
• 11 a cross section of the cap closure along the section line XI - XI to 10 .
• 12 an enlarged axial section according to the detail XII to 10 , such as
• 13 a perspective view of a metering closure device with partially broken cap closure in an alternative embodiment.

Based on 1 to 12 Now a metering-closure device for a bottle 1 described in more detail. So is one as a whole with 2 designated, multi-part cap closure with a rotation axis R ( 1 ), which consists of an inner cap 3 and an outer cap 4 is composed. The inner cap 3 has an internal thread as a mounting element 5 on, with which the cap closure 2 as a whole on the external thread 6 at the bottleneck 7 the bottle 1 is screwed on. The inner cap 3 also has a through a round opening in its top wall 8th formed outlet opening 9 on, in this embodiment by a sealing membrane 10 is closed. The latter is made in one piece from the plastic material of the inner cap 3 formed in the plastic injection molding process for the production, with - as from 2 clearly - predetermined breaking points 11 in the form of at the edge of the outlet opening 9 circumferential grooves are created. A jetty 12 it remains with unchanged thickness of the sealing membrane 10 , which - as will be explained later - for holding the sealing membrane 10 after opening the cap lock 2 on the inner cap 3 serves.

At the bottom of the inner cap 3 is also a common, well-known tamper-evident closure 13 by appropriate training of the bottle neck 7 with a sloping shoulder 14 and the known, over narrow tear-offs on the inner cap 3 Tailored originality ring 15 intended.

Finally, the inner cap points 3 another integrally formed sealing lip 16 at the bottom of its top wall 8th on, around the spout 9 runs around and in use close up on the bottleneck 7 rests.

The height in its height about twice as high as the inner cap 3 designed outer cap 4 has a lateral jacket wall 17 with an outside ribbing 18 for better Schraubbetätigung on. In addition, a top wall 19 provided at the center of a metering device in the form of a known dropper pipette 20 is formed. This points beside in 2 cut shown dosing 21 a common, central, roationskoaxial ventilation tube 22 on, about half the height of the outer cap 4 conically tapering inwards.

The outer cap 4 is finally with a hinged lid 23 provided that has a movie hinge 24 on the outer cap 4 is articulated. On the opposite side of the hinged lid 23 is again a through a breaker 25 provided originality assurance provided. On the inside of the hinged lid 23 is a ring collar 26 formed downwardly projecting, in the in 2 shown, closed position the mouth 27 of the ventilation tube 22 encompasses and during the closing movement a click-sound as a signal for a proper closing of the hinged lid 23 generated.

Coaxial around the ventilation tube 22 and the metering holes 21 around is the outer cap 4 with a separating device in the form of a substantially rotational coaxial, hollow cylindrical separating crown 28 provided in one piece from the material of the outer cap 4 with molded on. These separating crown 28 sticking out in the 1 to 5 shown first mounting position of the cap closure 2 almost as far as the ventilation tube 22 inside towards the top wall 8th the inner cap 3 , The separation crown 28 28 engages in one of the inner cap 3 on the top wall 8th molded, circumferential guide ring 29 a, which is designed to fit against the separation crown. The outer diameter D28 the separation crown 28 is slightly smaller than the inner diameter d9 the outlet opening 9 designed. Furthermore, the wall thickness of the separation crown tapers 28 to its free end, so that this is formed like a blade.

The connection between inner cap 3 and outer cap 4 is through one at the bottom of the outer cap 4 circumferential, inwardly projecting locking projection 30 scored, with which the outer cap 4 via a circumferential, outwardly projecting abutment web 31 is locked. The outer cap 4 Can not use the inner cap anymore 3 be deducted to the top. Referred to below 1 and 2 is still a movement possible, as will be explained in more detail later in detail.

The mode of operation of the metering closure device is now based on the 3 to 7 and in particular 8 and 9 explain in more detail. In principle, it should be noted that indoor 3 and outer cap 4 over limited paths relative to each other both in the axial direction parallel to the axis of rotation R displaceable as well as around the axis of rotation R are rotatable. For the initial installation of the cap closure 1 is the outer cap 4 on the inner cap 3 plugged, so that backup projection 30 and abutment bar 31 interlock. Here is the separation crown 28 with the ventilation tube 22 the dropper pipette 20 still above the inner cap 3 with the sealing membrane 10 , This position is against axial displacement of the outer cap 4 against the inner cap 3 through the particularly good in 8th recognizable construction protected, evenly over the circumference of the cap closure 2 distributed four times. The outer cap 4 points on the inside of its shell wall 17 a securing web extending parallel to the axis of rotation 32 on, in front of the abutment dock 31 ends and gets up on this. This can be done in the in 3 . 5 and 8th shown relative rotational position of outer and inner cap 4 . 3 to each other the outer cap 4 not axially against the inner cap 3 be moved. For the initial installation of the cap closure 2 on the bottleneck 7 is at the usual orientation of the thread 5 . 6 the outer cap 4 screwed in the closing direction S in a clockwise direction, so that a torque acts, which ensures that the securing web 32 relative to the inner cap 3 based on 8th to the left or clockwise relative to 3 emotional. For torque transmission is on the inner cap 3 outside a first rotation stop 33 molded to the securing web 32 strikes. The inner cap 3 is so in the closing direction S taken along and the cap closure 2 can on the bottleneck 7 be screwed on until the in 1 and 2 shown bearing position of the cap closure 2 on the bottleneck 7 is taken. In this position is the tamper-evident closure 13 active, the contents of the bottle are through the sealing membrane 10 and the sealing lip 16 hermetically enclosed and, in particular, can not reach the area of the dripping pipette. The outer cap 4 itself can not in the axial direction of displacement V Press down as the securing bar 32 on the abutment bar 31 rests.

For the first opening of the cap closure 2 is now - like a curved arrow symbol 34 on the hinged lid 23 signals - the outer cap 4 against the closing direction S , so to turn counterclockwise. This rotation (counterclockwise with respect to the 3 to 7 or to the right according to 8th ) is for example about a rotation angle D (please refer 3 ) of 36 °, until then the securing bar 32 the outer cap 4 on a second rotation stop 35 on the outside of the inner cap 3 strikes. To the outer cap 4 in this relative rotational position to the inner cap 3 to lock, is also a locking device 36 four times over the circumference of the cap closure 2 provided distributed, each above the second rotary stop 35 is arranged. This locking device 36 is on the one hand by an inside in the upper half of the jacket wall 17 the outer cap 4 molded locking lamella 37 formed with its trailing edge 38 in the closing direction S the cap lock 1 pointing slightly inwards. On the other hand, on the inner cap 3 outside one with the barrier plate 37 cooperating barrier ramp 39 formed, which increases against the closing direction S to the outside and in a radially extending locking edge 40 ends. During the first opening movement of the outer cap 4 against the closing direction S So runs the locking plate 37 the barrier ramp 39 up, until the blocking edge 38 the blocking edge 40 snapping behind, like this in 9 is shown particularly clearly. This blocking position cooperates with the stop position of the securing web 32 on the second rotation stop 35 , With it are inner cap 3 and outer cap 4 set to each other in this relative rotational position.

Now to a relative axial displacement in the direction of displacement V from outer cap 4 to inner cap 3 to enable is the abutment bar 31 the inner cap 3 before the second rotation stop 35 through a window 41 Cut out, so now the securing bar 32 the outer cap 4 in longitudinal direction of displacement V no stop finds and thus the outer cap 4 relative to the inner cap 3 down to the 1 . 2 . 8th and 9 can be pressed. Thus, the in 10 illustrated opening position of the cap closure 2 reached. In this transfer of the in 1 and 8th shown storage position of outer cap 4 to inner cap 3 in the in 10 shown dispensing position has the separation crown 28 the sealing membrane 10 pierced, the latter in the area of the predetermined breaking points 11 breaks up and over the jetty 12 held on the inside of the bottle neck 7 folded away practically folded away to the side. The dropper pipette 20 now stands in the bottleneck 7 into it. Due to the sealing lip 16 and the guide ring 29 can when dosing a liquid pharmaceutical from the bottle 1 no liquid in the area between inner cap 3 and outer cap 4 reach. The guide ring 29 also ensures a clean guidance of the separation crown 28 when piercing the sealing membrane 10 ,

To the outer cap 4 in the in 10 Arresting shown dispensing position in the axial direction, is a locking device 42 provided, on the one hand, from the abutment web 31 on the outside of the inner cap 3 and on the other hand by integrally formed on the inner wall of the outer cap locking projections 43 is formed. The latter engage behind the abutment bar 31 which is in the above the locking projections 43 formed groove 44 so that the in 10 shown position from outer to inner cap 4 . 3 is secured, as this is particularly clear 12 evident.

13 Finally, shows a second embodiment of the cap closure 2 ' in which the sealing membrane 10 ' through one on top of the inner cap 3 and its outlet opening 9 hermetically applied aluminum foil to form a foil closure 45 is provided. As a sealing surface a smooth ring surface for the film closure 45 to provide, in this embodiment, the guide ring 29 for the separation crown 28 omitted.

Incidentally, the structure and function of the cap closure are the same 2 ' according to 13 with the embodiment according to the 1 to 12 match, so that a repeated description is unnecessary. It can be made in this regard to the comments on this drawing.

Claims (14)

Dispensing closure device for bottles, in particular for storage and dispensing of liquid pharmaceuticals, comprising - a bottle neck (7) of the bottle (1), - a multi-part, on the bottle neck (7) mounted cap closure (2, 2 ') with = an inner cap (3) with a mounting element (5) for attachment to the bottle neck (7), an outlet opening (9) for the bottle contents, and a sealing membrane (10, 10 ') for closing the outlet opening (9), and = an outer cap (4) with a metering device, a cover (23) for the metering device and a separating device (28) for the sealing membrane (10, 10 '), wherein the outer cap (4) longitudinal axial relative to the inner cap (3) between a storage position and a dispensing position for the bottle contents slidably mounted thereon and in the transfer of the outer cap (4) between the storage position and the dispensing position, the separating device (28) the sealing membrane (10, 10 ') severed to open the outlet opening , characterized in that the outer cap (4) about a limited angle of rotation (D) about the rotation axis (R) rotatably mounted on the inner cap (3), wherein for the initial opening of the cap closure (2, 2 ') in the transfer of the Bearing position in the dispensing position, the outer cap (4) relative to the inner cap (3) against the closing direction (S) over the limited angle of rotation (D) to a second rotation stop (35) is rotatable, in which stop position, the locking of the outer cap (4) in lifted longitudinal axial displacement direction (V) and the outer cap (4) longitudinal axial while destroying the sealing membrane (10, 10 ') by means of the separating device (28) and opening the outlet opening (9) relative to the inner cap (3) displaceable and in this dispensing position in the longitudinal axial direction is determined by an axial locking device (42). Dosing-closing device after Claim 1 , characterized in that the sealing membrane (10) is formed integrally from the material of the inner cap (3), preferably predetermined breaking points (11) between the sealing membrane (10) and the inner cap (3) are provided. Dosing-closing device after Claim 1 , characterized in that the sealing membrane (10 ') as hermetically on the outlet opening (9) of the inner cap (3) applied film closure (45) is formed. Dosing-closing device according to one of the preceding claims, characterized in that the inner cap (3) has a sealing lip (16) which lies tightly on the bottle neck (7) and surrounds the outlet opening (9). Metering-closure device according to one of the preceding claims, characterized in that the separating device is formed on the outer cap (4) by a separating crown (28) piercing through the sealing membrane (10, 10 ') during its axial displacement movement. The separating crown (28) extends around the metering device (20). arranged around and their Outer diameter (D28) is slightly smaller than the inner diameter (d9) of the outlet opening (9). Dosing-closing device after Claim 5 , characterized in that on the upper side of the inner cap (3) surrounding the outlet opening (9), on the outside of the separation crown (28) in sealing and guiding function fitting guide ring (29) is arranged. Dosing-closing device according to one of the preceding claims, characterized in that for the Erstschraubmontage the cap closure (2, 2 ') in the storage position on the bottle neck (7) outer cap (4) and inner cap (3) by a first rotation stop (33) in Closing direction (S) and a Axialarretierung preferably in the form of cooperating abutment and securing webs (31, 32) in the longitudinal axial direction of displacement (V) are locked to each other. Dosing-closing device according to one of the preceding claims, characterized in that the outer cap (4) in the stop position at the end of the rotational movement against the closing direction (S) by a latching device (36) is dreharretiert. Dosing-closing device after Claim 8 Characterized in that the latching means (36) at least one, preferably distributed three to four uniformly over the circumference of the cap closure (2, 2 '), the inside of the outer cap (4) integrally formed with a locking edge (38) (in the closing direction S ) facing locking slats (37) and in each case cooperating with these, contrary to the closing direction (S) outwardly rising locking ramps (39), wherein the locking edges (40) in the rotationally locked stop position of the locking edges (38) of the locking plates (37) are engaged behind , Dosing-closing device after Claim 9 , characterized in that the latching device (36) is designed so that when transferring the blocking edge (s) (38) of the locking plate (s) (37) behind the locking edge (s) (40) of the locking ramp (s) (39) a signal noise for locking can be generated. Metering-closure device according to one of the preceding claims, characterized in that the axial locking device (42) between the outer cap (4) and inner cap (3) by inside the outer cap (4) integrally formed locking projections (43) is formed in the locked position of Outer cap (4) on the outside of the inner cap (3) integrally formed locking webs, preferably formed by the abutment web (31), engage behind. Dosing-closing device according to one of the preceding claims, characterized in that the lid is hinged as a hinged lid (23) on the outer cap (4) via a film hinge (24). Dosing-closing device according to one of the preceding claims, characterized in that the locking of the outer cap (4) in the longitudinal direction of displacement (V) through a window (41) in an abutment web (31) of the inner cap (3) can be canceled. Cap closure (2, 2 ') for use in a metering closure device according to one or more of the preceding claims, having an inner cap (3) with a mounting element (5) for attachment to the bottle neck (7), an outlet opening (9) for the bottle contents, and a sealing membrane (10, 10 ') for closing the outlet opening (9), and an outer cap (4) with a metering device, a lid (23) for the metering device (20) and a separating device (28) for the sealing membrane (10, 10 '), wherein the outer cap (4) is slidably mounted longitudinally relative to the inner cap (3) between a storage position and a dispensing position for the bottle contents, and when the outer cap (4) is transferred between the storage position and the dispensing position, the separating device (28) the sealing membrane (10, 10 ') for opening the outlet opening (9) severed, characterized in that the outer cap (4) over a limited angle of rotation (D) about the axis of rotation (R) is rotatably mounted on the inner cap (3), wherein for the initial opening of the cap closure (2, 2 ') in the transfer from the storage position to the dispensing position, the outer cap (4) relative to the inner cap (3) against the closing direction (S ) about the limited angle of rotation (D) to a second rotation stop (35) is rotatable, in which stop position, the locking of the outer cap (4) in the longitudinal direction of displacement (V) repealed and the outer cap (4) longitudinal axial while destroying the sealing membrane (10, 10 ') by means of the separating device (28) and opening the outlet opening (9) relative to the inner cap (3) displaceable and in this dispensing position in the longitudinal axial direction by an axial locking device (42) is fixed.

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