Resource-saving closure device

Abstract

The invention relates to a closure device (1) for selectively closing or releasing a pouring opening of a container. The closure device comprises a closure cap (2), and the closure cap has a cap cover plate (4) and a cap casing (3) which adjoins the cap cover plate circumferentially. The cap casing extends cylindrically or conically about the closure cap axis (50) at least in some sections, and the closure cap has first guide means (5), said first guide means being formed and arranged such that the first guide means can be brought into engagement with a guide means of a container in order to close the opening of the container. The cap casing has an outer surface which faces away from the closure cap axis and an inner surface which faces the closure cap axis, and the first guide means is arranged on the inner surface of the cap casing. The inner surface (7) of the cap casing (3) has a plurality of depressions (8), and / or the cap casing (3) has a reinforcement section (17).

Description

[0001] Resource-saving locking device

[0002] The present invention relates to a closure device for selectively closing or uncovering a pouring opening of a container, wherein the closure device comprises a closure cap, wherein the closure cap has a cap cover plate and a cap skirt adjoining the cap cover plate on the circumference, wherein the cap skirt extends at least partially cylindrically or conically around a closure cap axis, wherein the closure cap has a first guide means, wherein the first guide means is designed and arranged such that it can be brought into engagement with a guide means of a container in order to close a container opening of the container, wherein the cap skirt has an outer surface directed away from the closure cap axis and an inner surface directed towards the closure cap axis, wherein the first guide means is arranged on the inner surface of the cap skirt.In addition, the present invention also relates to a combination of a container with a corresponding closure device.

[0003] From the document DE 20 2022 103 032 U1 a closure element for a liquid container with a closure cap is known, which excludes or at least reduces the risk of liquid residues escaping from an open, attached closure cap.

[0004] Container closure devices are produced in large quantities. Therefore, it is desirable to use only the resources absolutely necessary to produce a closure device. This not only reduces production costs but also the closure device's ecological footprint. For example, the document DE 102025 111 245 A1 deals with an easy-to-manufacture closure cap made from a minimum of plastic, which ensures a better grip on a bottle neck even under increased internal pressure. A further challenge is that material-saving container closure devices must be sufficiently strong, especially if they are intended for containers in which hazardous substances are stored or transported.Against this background, it is an object of the present invention to provide a closure device which can be produced in a resource-saving manner and at the same time has a high strength.

[0005] This object is achieved by a closure device for selectively closing or uncovering a pouring opening of a container, wherein the closure device comprises a closure cap, wherein the closure cap has a cap cover plate and a cap skirt adjoining the cap cover plate on the circumference, wherein the cap skirt extends at least in sections cylindrically or conically around a closure cap axis, wherein the closure cap has a first guide means, wherein the first guide means is designed and arranged such that it can be brought into engagement with a guide means of a container in order to close a container opening of the container, wherein the cap skirt has an outer surface directed away from the closure cap axis and an inner surface directed towards the closure cap axis, wherein the first guide means is arranged on the inner surface of the cap skirt.

[0006] According to a first possibility, the inner surface of the cap skirt can have a plurality of depressions, wherein each of the depressions extends flatly over a respective circumferential angle section and a respective axial section, wherein the radial distance of the inner surface to the closure cap axis within a depression is greater than in sections of the inner surface which directly adjoin the respective depression on both sides in the circumferential direction.

[0007] According to a second possibility, the cap skirt can have a reinforcement section, wherein the wall thickness of the cap skirt in at least one sectional plane comprising the closure cap axis and the reinforcement section is greater in the reinforcement section than the wall thickness of the cap skirt in at least one wall section of the cap skirt arranged axially between the reinforcement section and the cap cover plate, wherein the reinforcement section is arranged axially on the side of the guide means facing away from the cap cover plate and / or at least partially at an axial height of the guide means, i.e. is arranged at an axial height with the guide means in the region of the guide means, for example axially at the lower end section of the guide means, wherein the lower end section represents a section of the cap skirt facing axially away from the cap cover plate, which section forms the guide means region.For example, the wall thickness of the cap shell in the reinforcement section is at least 2 mm greater than in the wall section located between the reinforcement section and the cap cover plate.

[0008] According to one embodiment of the present invention, the first option exists alone. According to one embodiment of the present invention, the second option exists alone. According to one embodiment of the present invention, the first and second options exist in combination.

[0009] Both the first and second options result in a high degree of strength for the closure device. In particular, the combination of the recesses in the inner surface of the cap skirt and the at least one reinforcement section of the cap skirt results in an extraordinarily high degree of strength for the closure device over a large axial length of the cap skirt. The first and second options, as well as their combination, simultaneously enable resource-efficient production of the closure device. This is because recesses on the inner surface of the cap skirt increase the fracture resistance of the cap skirt. The cap skirt can compensate for external forces better through elastic deformation than with an inner surface extending planarly in the circumferential direction without recesses.It has also been shown that the strength of a closure device with a reinforcement section is approximately equivalent to that of a closure device with a greater wall thickness throughout. Thus, the reinforcement section enables a closure device with comparable strength, but requiring fewer resources.

[0010] For the purposes of the present invention, guide means such as internal threads or bayonet elements are not to be considered as part of the cap skirt, even if they can be formed integrally with the cap skirt in embodiments of the present invention. In particular, when considering the inner surface of the cap skirt and its distance from the closure cap axis, the first guide means or any further guide means arranged on the inner surface are excluded from consideration. Consequently, the first guide means or any further guide means, with their profile thicknesses, do not create a depression in the inner surface of the cap skirt within the meaning of the present invention. A first guide means can, for example, be an internal thread.

[0011] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein the first guide means has a radially measured profile depth greater than zero, wherein the radial distance of the inner surface from the closure cap axis within a recess is greater than the sum of the radial distance of the first guide means from the closure cap axis and the profile depth of the first guide means. In other words, a base of a recess is radially further spaced from the closure cap axis than the base of a guide means profile, the guide means profile base. According to one embodiment of the present invention, a region of the inner surface of the cap skirt without a recess represents, among other things, a guide means profile base.For example, the base of a recess is radially spaced at least 1 mm further from the closure cap axis than the guide center profile base.

[0012] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein the outer surface of the cap skirt has a plurality of elevations, wherein each of the elevations extends flat over a respective circumferential angular section and a respective axial section, wherein the radial distance of the outer surface to the closure cap axis is greater in the region of an elevation than in sections of the outer surface which directly adjoin the respective elevation on both sides in the circumferential direction. The respective elevation of the outer surface protrudes, for example, radially by 1 mm (in other embodiments, for example by 0.5 mm to 1.5 mm) from the sections of the outer surface which directly adjoin the respective elevation on both sides in the circumferential direction. Such elevations of the outer surface likewise contribute to increased strength of the closure cap.According to one embodiment, at least one of the elevations is formed as a web on the outer surface of the cap skirt, extending axially and parallel to the closure cap axis. According to another embodiment, the side surfaces of the respective web can, for example, run parallel to the closure cap axis.

[0013] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least one of the recesses of the inner surface is designed as an elongated groove extending axially parallel to the closure cap axis. In other words, those boundaries of the recess which delimit the recess in the circumferential direction extend parallel to the closure cap axis. According to one embodiment of the closure device according to the invention in the sense of the first possibility, each of the recesses of the inner surface is designed as an elongated groove extending axially parallel to the closure cap axis. Such recesses are associated with simple and cost-effective production. Furthermore, correspondingly injection-molded closure devices can be demolded very easily.According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least one depression of the inner surface extends at least partially within a surface section of the inner surface defined by the circumferential angle section and the axial section of an elevation of the outer surface, wherein preferably a plurality of depressions of the inner surface each extend at least partially within a respective surface section, wherein the respective surface section is defined by the circumferential angle section and the axial section of a respective elevation of the outer surface, wherein particularly preferably at least half of all depressions of the inner surface each extend at least partially within a respective surface section which is defined by the circumferential angle section and the axial section of a respective elevation of the outer surface.This allows for a high degree of strength in the closure cap while simultaneously reducing material requirements. The raised portions also provide a comfortable surface for the fingers to grip and manipulate the closure mechanism, for example, when opening and closing the closure mechanism.

[0014] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least one depression of the inner surface extends completely within a surface section of the inner surface defined by the circumferential angle section and the axial section of an elevation of the outer surface, wherein preferably several depressions of the inner surface each extend completely within a respective surface section, wherein the respective surface section is defined by the circumferential angle section and the axial section of a respective elevation of the outer surface, wherein particularly preferably at least half of all depressions or all depressions of the inner surface extend completely within a respective surface section,wherein the respective surface section is defined by the circumferential angle section and the axial section of a respective elevation of the outer surface. In other words, a recess and an elevation can be arranged, in particular, within the same circumferential angle range. This results in extremely low material expenditure for the production of the closure device.without having to accept any compromises in the strength of the closure cap. Rather, the correspondingly designed elevations on the outer surface and depressions on the inner surface can even increase the strength compared to a largely planar cap shell. According to one embodiment of the closure device according to the invention, the first guide means is an internal thread. An internal thread within the meaning of the present invention can have a continuous profile or consist of several spaced-apart segments. The internal thread or an internal thread segment has a profile depth greater than zero and a thread pitch greater than zero along its extension.

[0015] According to one embodiment of the closure device according to the invention, the first guide means is a bayonet element. The bayonet element can be designed as a profile with a profile depth greater than zero, wherein the profile extends planar in sections in a plane perpendicular to the closure cap axis. In other words, the profile has a zero gradient in such a section. Additionally, the profile can have a ramp region in which the profile rises at a gradient angle greater than zero relative to the surface perpendicular to the closure cap axis.

[0016] According to one embodiment of the closure device according to the invention, the first guide means is designed such that the closure device is a flip-top closure device.

[0017] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein the first guide means is interrupted in the circumferential direction in the region of at least one recess of the inner surface, such that the at least one recess separates two guide means segments of the first guide means that are adjacent in the circumferential direction from one another. According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein preferably the first guide means is interrupted in the circumferential direction in the regions of several recesses of the inner surface, such that the several recesses each separate two guide means segments that are adjacent in the circumferential direction from one another.This allows the material required to manufacture a locking device to be further reduced without significantly reducing its strength.

[0018] According to one embodiment of the closure device according to the invention, the first guide means has a profile depth that can be measured radially, wherein the profile depth of the first guide means has a first value greater than zero in a first profile section and a second value greater than zero in a second profile section, wherein the first value of the profile depth and the second value of the profile depth are not the same. In particular, within the meaning of the first possibility of the invention, the profile depth of the first guide means in a region of the inner surface with a recess can be reduced compared to the profile depth of the first guide means in a region of the inner surface without a recess. Alternatively, however, the profile depth of the first guide means in a region of the inner surface with a recess can be increased compared to the profile depth of the first guide means in a region of the inner surface without a recess, or can be identical to the profile depth.These designs also enable resource-saving production and maintain the full functionality of the locking device.

[0019] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein the first guide means extends in the circumferential direction over the region of at least one pair of axially adjacent recesses of the inner surface, such that the first guide means separates the recesses of the at least one pair from one another when viewed axially, wherein preferably the first guide means extends in the circumferential direction over the regions of several pairs of axially adjacent recesses of the inner surface, such that the first guide means separates each pair of recesses of the several pairs from one another when viewed axially. This enables recesses and a continuous thread profile, which is familiar to many users and is therefore associated with a greater feeling of security with regard to the tightness of the closure device.

[0020] In particular, combinations of recesses that are bridged by sections of the first guide means and recesses that separate two guide means segments from one another can also be present within the meaning of the present invention.

[0021] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein the inner surface of the cap jacket has at least 4 depressions and / or the outer surface of the cap jacket has at least 4 elevations.

[0022] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein the inner surface of the cap skirt has at least 7 depressions and / or the outer surface of the cap skirt has at least 7 elevations. According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein the inner surface of the cap skirt has at least 10 depressions and / or the outer surface of the cap skirt has at least 10 elevations.

[0023] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein the inner surface of the cap jacket has a maximum of 30 depressions and / or the outer surface of the cap jacket has a maximum of 30 elevations.

[0024] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein the inner surface of the cap jacket has a maximum of 20 depressions and / or the outer surface of the cap jacket has a maximum of 20 elevations.

[0025] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein the inner surface of the cap jacket has a maximum of 15 depressions and / or the outer surface of the cap jacket has a maximum of 15 elevations.

[0026] Tests have shown that with a number of recesses according to the parameter ranges established by these embodiments - both for each embodiment itself and in combination of the embodiments with each other - the desired strength of the closure cap is achieved with a simultaneous low material expenditure.

[0027] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein the distance between two circumferentially adjacent depressions is a periodic function of the circumferential angle. The size of the distance between two adjacent depressions and / or two adjacent elevations therefore follows a recurring regularity. For example, the distances in this sense can have the following regularity, wherein the distances are specified in angular units: 20 degrees, 10 degrees, 20 degrees, 10 degrees, etc. Such regularity enables a closure device whose center of mass lies on the closure cap axis and leaves a valuable haptic impression on the user.According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein the plurality of recesses in the inner surface and / or elevations in the outer surface are arranged equidistantly in the circumferential direction. Accordingly, the distance between two circumferentially adjacent recesses is identical for all pairs of circumferentially adjacent recesses. This ensures that the strength of the closure is largely independent of the circumferential angle range.

[0028] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein several of the recesses of the inner surface and preferably all recesses of the inner surface extend axially in the direction of the cap cover plate exclusively up to an upper axial limit and not beyond, wherein the upper axial limit is a maximum of 5 mm axially away from the cap cover plate. According to a related embodiment, the upper axial limit is a maximum of 2 mm axially away from the cap cover plate. In particular, the upper axial limit can be substantially identical to the axial position of the inner surface of the cap cover plate. Accordingly designed recesses therefore extend over a large axial region of the cap jacket and consequently enable particularly high savings in the resources used to manufacture the closure device.

[0029] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein the cap jacket has at least a first cylinder section and a second cylinder section, wherein the second cylinder section is arranged on the side of the first cylinder section facing away from the cap cover plate, wherein the second cylinder section has, in a region without a recess, an inner radius that is greater than the inner radius of the first cylinder section in a region without a recess, wherein the first cylinder section has the recesses of the inner surface, wherein several of the recesses and preferably all of the recesses of the inner surface extend axially in a direction facing away from the cap cover plate exclusively up to a lower axial limit and not beyond,According to a first alternative, the lower axial limit is directly adjacent to the second cylinder section, or according to a second alternative, the lower axial limit is axially spaced from the second cylinder section and thus closer to the cap cover plate than the second cylinder section. This enables, among other things, the attachment of a tamper-evident ring with a flexible band. The tamper-evident ring can, for example, be attached to the lower end of the closure cap as an imaginary axial continuation of the second cylinder section and be connected to the cap skirt via an easily breakable connection. Due to the larger inner radius of the second cylinder section compared to the first cylinder section, the tamper-evident ring can further comprise an inwardly foldable flexible band, with which the tamper-evident ring can be brought into engagement with a pilfer-proof ring of a container neck.

[0030] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein the depressions of the inner surface extend axially in a direction facing away from the cap cover plate exclusively up to a respective lower axial limit and not beyond, wherein the first guide means is, for example, an internal thread, wherein in the circumferential region of each depression the lower axial limit associated with the respective depression is arranged axially between a lower limit of the guide means lying in the respective circumferential region and the cap cover plate. As a result, an area of ​​the inner surface without depressions can be formed in the lower region of the guide means and / or below the guide means (e.g. thread), extending over the full circumferential angle of 360 degrees.Consequently, in circumferential sections where the outer surface is raised, the wall thickness in the area axially below the thread is significantly greater than in the areas axially above it. These circumferential sections, where the outer surface is raised, form a reinforcement section within the meaning of the present invention. This increases the strength of the closure device in an axial region where increased force is to be expected during use, since closure devices are compressed by the user precisely in this axial region when they are unscrewed from a container.

[0031] In one embodiment, the reinforcement sections are arranged exclusively beneath an associated recess (i.e., in a direction away from the cap cover plate with respect to the respective recess). In one embodiment, the wall thickness of the cap skirt in the respective reinforcement section is at least 0.5 mm greater, preferably at least 0.8 mm greater, than the wall thickness of the cap skirt in a wall section arranged axially between the reinforcement section and the cap cover plate.

[0032] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein the cap skirt has a constant wall thickness in at least one sectional plane perpendicular to the closure cap axis, which also intersects at least some of the recesses of the inner surface. According to one embodiment, the closure device has a substantially constant wall thickness in a sectional plane, wherein any guide means are disregarded when determining the wall thickness, wherein the sectional surface also intersects at least some of the recesses of the inner surface that extend within a surface section defined by the circumferential angle section of an elevation of the outer surface. This enables an efficient manufacturing process using injection molding.A constant wall thickness of the cap shell is associated with a constant distance between the molds in the area of ​​the cap shell to be molded, resulting in consistent flow behavior of the casting material. This also advantageously ensures a homogeneous cooling and curing process, which further increases the strength of the cap shell.

[0033] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the recesses in the inner surface each extend axially over at least 8 mm. According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the elevations in the outer surface each extend axially over at least 9 mm.

[0034] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the recesses in the inner surface each extend axially over at least 12 mm. According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the elevations in the outer surface each extend axially over at least 13 mm.

[0035] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the depressions in the inner surface each extend axially over a maximum of 25 mm. According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the elevations in the outer surface each extend axially over a maximum of 30 mm. According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the depressions in the inner surface each extend axially over a maximum of 18 mm.According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the elevations in the outer surface each extend axially over a maximum of 23 mm.

[0036] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the recesses of the inner surface extend in the circumferential direction over a circumferential angle of at least 5 degrees. According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the elevations in the outer surface extend in the circumferential direction over a circumferential angle of at least 7 degrees.

[0037] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the recesses of the inner surface extend in the circumferential direction over a circumferential angle of at least 8 degrees. According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the elevations in the outer surface extend in the circumferential direction over a circumferential angle of at least 10 degrees.

[0038] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the recesses of the inner surface each extend in the circumferential direction over a circumferential angle of a maximum of 20 degrees. According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the elevations in the outer surface each extend in the circumferential direction over a circumferential angle of a maximum of 25 degrees.

[0039] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the recesses in the inner surface extend in the circumferential direction over a maximum circumferential angle of 14 degrees. According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the elevations in the outer surface extend in the circumferential direction over a maximum circumferential angle of 20 degrees.

[0040] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the recesses of the inner surface extend in the circumferential direction over an arc length that is equal to or less than the axial extent of the respective recess. According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the elevations in the outer surface extend in the circumferential direction over an arc length that is equal to or less than the axial extent of the respective elevation.

[0041] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the recesses of the inner surface extend in the circumferential direction over an arc length that corresponds at most to half the axial extent of the respective recess. According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least half of the elevations in the outer surface extend in the circumferential direction over an arc length that corresponds at most to half the axial extent of the respective elevation.

[0042] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the second possibility, wherein the reinforcing section extends in the circumferential direction as a complete ring over a circumferential angle of 360 degrees. This enables high rigidity in an area of ​​the closure device that is subject to particularly high stress in practice, thus reducing, for example, the risk of deformation of the closure device due to external forces.

[0043] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the second possibility, wherein the reinforcement section has ring segments, wherein the closure device has interrupted sections, wherein the ring segments each extend in the circumferential direction and are separated from one another by interrupted sections, wherein the interrupted sections have a smaller wall thickness than the ring segments. This also increases the rigidity of the closure device in a vulnerable area of ​​the closure device. At the same time, however, it is possible to achieve the increase in rigidity with the lowest possible material expenditure. According to one embodiment, the ring segments of the reinforcement section have an arc length that is less than or equal to the arc length of the circumferential angle section of the elevation in the outer surface of the cap skirt.

[0044] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the second possibility, wherein the cap skirt has a constant first inner radius in at least one first sectional plane perpendicular to the closure cap axis, which intersects the reinforcement section, preferably all reinforcement sections. The inner radius of the cap skirt is—in other words—the distance between the inner surface of the cap skirt and the closure cap axis.According to a further embodiment, the closure device can additionally be designed according to the first possibility, wherein the cap skirt has a second inner radius outside the recess or recesses (and without taking into account the first guide means) in at least one second sectional plane perpendicular to the closure cap axis, which intersects the recess, preferably all recesses, wherein the first inner radius is either equal to the second inner radius or the first inner radius is greater than the second inner radius. Consequently, a ring with a constant inner radius forms on the inner surface of the cap skirt below the recesses, i.e. the inner radius is constant there over the entire circumferential angle of 360 degrees. This ring is either set back outwards relative to the inner surface of the cap skirt above it (without recesses) or is axially flush with this inner surface.

[0045] According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least two depressions in the inner surface of the cap skirt are arranged diametrically opposite one another, wherein preferably each of the depressions in the inner surface of the cap skirt is arranged diametrically opposite one another to a depression in the inner surface of the cap skirt. According to one embodiment of the closure device according to the invention, the closure device is designed at least according to the first possibility, wherein at least two elevations in the outer surface of the cap skirt are arranged diametrically opposite one another, wherein preferably each of the elevations is arranged diametrically opposite one another to a elevation in the outer surface of the cap skirt.

[0046] According to one embodiment of the closure device according to the invention, the closure device comprises a plastic material. In particular, the closure device can consist of one or more plastic materials. The closure device can be manufactured, in particular, by injection molding.

[0047] According to one embodiment of the closure device according to the invention, the closure device has a maximum inner diameter of 25 mm to 80 mm, preferably of 60 mm to 70 mm.

[0048] According to one embodiment of the closure device according to the invention, the closure device has a total axial height of 15 mm to 50 mm, preferably of 30 mm to 40 mm.

[0049] According to one embodiment of the closure device according to the invention, the closure cap has at least one locking projection for receiving a sealing disc, wherein the at least one locking projection is arranged on the inside and between the cap cover plate and the first guide means. In particular, such an embodiment can also have a guarantee ring that is either completely removable or attached to indicate the first opening of the closure device. In combination with a sealing disc, a sufficient sealing and safety effect is then provided.

[0050] According to one embodiment of the closure device according to the invention, the closure cap has a support ring extending circumferentially around the closure cap axis and a cutting tooth, wherein both the support ring and the cutting tooth are arranged on the outer surface of the cap lid plate. In other words, the support ring and cutting tooth are arranged above the cap lid plate. The support ring can be designed in particular as an axial extension of the cap jacket, which extends axially beyond the cap lid plate. The cutting tooth can have an at least partially axially extending cutting edge. Such closure devices are particularly advantageous if the container opening of a container whose pouring opening is closed with the closure device has an additional sealing film with which the pouring opening is closed before first use.In such a case, the cap can be unscrewed during initial opening, placed upside down on the container neck, and secured against the container neck by the support ring. If the cap is then rotated around its axis, the cutting tooth cuts the sealing film, allowing the container's pouring opening to be used.

[0051] According to one embodiment of the closure device according to the invention, the closure device has a tamper-evident band, preferably a tamper-evident ring, wherein the tamper-evident band is connected to the cap skirt via at least one easily tearable connection, wherein the tamper-evident band can be completely detached from the cap skirt according to a first alternative. According to a second alternative, the tamper-evident band is captively connected to the cap skirt via a connecting element. Preferably, the tamper-evident band is connected to the cap skirt via a connecting element in such a way that the connecting element can withstand a tensile force of 12.5 Newtons without the closure cap becoming detached from the tamper-evident band. The tamper-evident band can be designed as a complete tamper-evident ring. The tamper-evident band can be arranged in particular on the side of the cap skirt facing away from the cap cover plate.

[0052] According to one embodiment of the closure device according to the invention, the closure device comprises a tamper-evident ring, wherein the tamper-evident ring is connected to the cap skirt via an easily tearable connection. Such a tamper-evident ring can comprise a flexible band, wherein the flexible band can be designed as a ring or as a ring section and can be hingedly connected to an upper section of the tamper-evident ring, such that the flexible band can be folded toward the closure cap axis in order to be brought into engagement with a pilfer-proof ring of a container in this folded position. The flexible band thus enables the tamper-evident ring to be connected to the container. The easily tearable connection between the tamper-evident ring and the cap skirt can then tear due to axially acting forces when the closure cap is opened.

[0053] According to one embodiment of the closure device according to the invention, the closure device comprises a tamper-evident ring, wherein the tamper-evident ring is connected to the cap skirt via an easily tearable connection, wherein the tamper-evident ring has internal blocking elements, wherein the blocking elements are designed such that they can be brought into engagement with projections of a container neck in order to prevent co-rotation of the tamper-evident ring and closure cap. This can cause the easily tearable connection to tear due to shear forces. The previously described embodiments of the closure device according to the invention can be combined with one another, unless mutually exclusive alternatives are expressly stated.

[0054] The present invention also relates to a combination of a container with a closure device according to one of the previously described embodiments.

[0055] According to one embodiment of the combination according to the invention, the container has a container opening, wherein the container has a second guide means, wherein the first guide means and the second guide means can be brought into engagement with one another in order to close the pouring opening and thus bring it into a closed state, wherein the first guide means and the second guide means can be brought out of engagement in order to release the container opening and thus bring it into an open state.

[0056] The container opening can, in particular, have a circular cross-sectional area. The combination can be designed such that the circular cross-sectional area is completely exposed in the open state. For the purposes of the present invention, a circular cross-sectional area is understood to mean a completely circular area and not, for example, a merely annular area.

[0057] According to one embodiment of the combination according to the invention, the container has a sealing film or sealing plate, wherein the sealing film or sealing plate closes the pouring opening before the closure device is opened for the first time.

[0058] According to one embodiment of the combination according to the invention, the container has only a single container opening.

[0059] Those features of the closure device according to the invention that have been previously described in connection with such a device can also be features of a closure device that is part of an inventive combination of a container with a closure device. Conversely, a closure device according to the invention can also have features that are only described in connection with an inventive combination.

[0060] Within the scope of the present invention, the terms "below" and "above" or "bottom" and "top" are to be understood such that "below an element" refers to an arrangement on one side of the corresponding element, which can be reached by following an axial direction pointing from the cap cover plate toward the cap skirt. Consequently, "above an element" refers to an arrangement on one side of the corresponding element, which can be reached by following an axial direction pointing from the cap skirt toward the cap cover plate.

[0061] Further features, advantages, and embodiments of the present invention can be found in the accompanying figures and the associated description. They show schematically:

[0062] Fig. 1A: a perspective view of a first embodiment of the closure device according to the invention,

[0063] Fig. 1 B: a side view of the embodiment shown in Fig. 1A,

[0064] Fig. 1C: a first sectional view of the embodiment shown in Fig. 1A according to the sectional plane 101 shown in Fig. 1B,

[0065] Fig. 1 D: a second sectional view of the embodiment shown in Fig. 1A,

[0066] Fig. 2A: a perspective view of a second embodiment of the closure device according to the invention,

[0067] Fig. 2B: a side view of the embodiment shown in Fig. 2A,

[0068] Fig. 2C: a first sectional view of the embodiment shown in Fig. 2A according to the sectional plane 102 shown in Fig. 2B,

[0069] Fig. 2D: a second sectional view of the embodiment shown in Fig. 2A,

[0070] Fig. 3A: a perspective view of a third embodiment of the closure device according to the invention,

[0071] Fig. 3B: a side view of the embodiment shown in Fig. 3A,

[0072] Fig. 3C: a first sectional view of the embodiment shown in Fig. 3A according to the sectional plane 103 shown in Fig. 3B and

[0073] Fig. 3D: a second sectional view of the embodiment shown in Fig. 3A.

[0074] Fig. 1A provides a view of the inside and outside of a first embodiment of the closure device 1 according to the invention. The outer surface 6 of the cap skirt 3 has a plurality of web-shaped elevations 9 running axially parallel to the closure cap axis 50, which are arranged equidistantly around the circumference of the cap skirt 3. The distance between two elevations 9 adjacent in the circumferential direction is therefore the same for all adjacent elevations 9. Each elevation 9 protrudes, for example, by 1 mm from the sections 6a of the outer surface 6, which directly adjoin the respective elevation 9 on both sides in the circumferential direction. The inner surface 7 has depressions 8, which are also arranged equidistantly around the circumference of the cap skirt 3.Each of the recesses 8 extends axially parallel to the closure cap axis 50 and from the boundary between the cap skirt 3 and the cap cover plate 4 to a lower boundary below those sections of the first guide means 5 which adjoin the recesses 8 in the circumferential direction. The first guide means 5 is designed as an internal thread which, in the embodiment shown here, is interrupted by the recesses 8. A recess 8 thus separates two adjacent thread segments, which form an imaginary continuous thread, from one another in the circumferential direction. Each recess 8 also runs within and parallel to a raised portion 9, so that the wall thickness along the circumferential direction in the region of the recess is approximately constant.

[0075] In the embodiment shown in Fig. 1A, the imaginary thread of the first guide means 5 extends over a total circumferential angle of more than 720 degrees. To completely unscrew or unscrew the closure device 1 shown therein on a container neck with a corresponding external thread (not shown), a rotation angle of more than 720 degrees is necessary, i.e., more than two full revolutions. However, internal threads as the first guide means 5 with shorter imaginary threads are also conceivable, in particular in the range from 360 degrees to 720 degrees or even below 360 degrees.

[0076] The cap skirt 3 has, on its outer surface 6 below the axial region in which the first guide means 5 extends, a circumferential ring 14 with external gripping serrations. The circumferential ring 14 protrudes radially from the regions of the outer surface 6 that adjoin the ring 14 axially above and below. This is particularly clearly visible in Fig. 1D. Further below this ring 14, a guarantee ring 10 is attached to the cap skirt 3 and is connected to the cap skirt 3 via a weakening line 11.

[0077] Fig. 1B also shows a sectional plane 101 perpendicular to the closure cap axis 50. The sectional view from above resulting from this sectional plane 101 - i.e. looking from the cap cover plate - is shown in Fig. 1C. Fig. 1C shows that the elevations 9 of the outer surface 6 and the depressions 8 of the inner surface 7 are designed to correspond to one another. Each pair consisting of a depression 8 and an elevation 9 extends essentially within the same circumferential angular range. The sectional plane 101 is arranged axially such that it also intersects the first guide means 5. This can be seen in Fig. 1C in that the radial material thickness varies in the circumferential direction in regions without a depression 8.However, the radially measured wall thickness of the cap skirt 3 - within the meaning of the present invention - is identical in all areas without the recess 8, since the cap skirt 3, within the meaning of the present invention, is considered a separate element from the first guide means 5. Due to the one-piece design of the cap skirt 3 and the first guide means 5, the material thickness varies in the sectional plane shown in Fig. 1C, since the first guide means 5, designed as an internal thread with a thread pitch greater than zero, naturally exhibits a variation in the radial material thickness in the circumferential direction in a sectional plane perpendicular to the closure cap axis 50.

[0078] Fig. 1C also shows that, in the embodiment shown there, two recesses 8 of the inner surface 7 are always arranged diametrically opposite one another. Two elevations 9 of the outer surface 6 are also always arranged diametrically opposite one another.

[0079] Fig. 1D shows a sectional view for a sectional plane containing the closure cap axis 50 and intersecting two diametrically opposed recesses 8 and associated elevations 9. Here, it can be clearly seen that the distance between the inner surface 7 and the closure cap axis 50 is greater within a recess 8 than in regions of the inner surface 7 that do not have a recess 8. The imaginary boundary between the inner surface 7 of the cap skirt and the first guide means 5 runs as an imaginary cylindrical extension of a region of the inner surface 7 on which no component of the first guide means is arranged.

[0080] The guarantee ring 10 arranged beneath the cap skirt 3 has a flexible band section 12, clearly visible in Fig. 1D, which is hingedly connected to an outer section of the guarantee ring 10 at its lower end and, in the illustration shown here, is bent inward. The flexible band section 12 also has weakened sections 18, each weakened section 18 having a wall thickness that is reduced compared to the regions of the flexible band section 12 immediately adjacent to the respective weakened section 18 in the circumferential direction. These weakened sections 18 facilitate folding the flexible band section 12 inward.

[0081] The embodiment shown in Figs. 1A to 1D can also be equipped with a sealing disc, which is fixed and held in position on the inside of the cap cover plate 4 by the locking projection 13. The embodiments shown in Figs. 2A to 2D and 3A to 3D are also equipped with a corresponding locking projection 13 or corresponding locking projections 13, or can be equipped with them, to fix a sealing disc.

[0082] The closure devices 1 shown in Figs. 1A to 3D are generally made of plastic and are manufactured by injection molding and, if necessary, subsequent cutting processes. After injection molding, the flexible band section 12 is still in a non-folded position and is located axially below the remaining sections of the tamper-evident ring 10. Before the closure device 1 is applied to a container neck, the flexible band section 12 is folded inwards so that at a later time it can engage with a pilfer-proof ring of a container neck and thereby bond the tamper-evident ring 10 to the container neck. The folding is done mechanically. The weakened sections 18 of the flexible band section 12 facilitate folding and thus reduce the risk of damage to the closure device 1 during mechanical folding. In the case of the method shown in Figs.In the embodiment shown in Figures 1A to 1D, a total of ten weakening sections 18 arranged equidistant from one another are provided.

[0083] In Fig. 1D, it is also evident that the lower boundary of the recesses 8 coincides with an upper boundary of the outwardly extending ring 14. In the embodiment shown in Figs. 1A to 1D, the recesses 8 are axially elongated to such an extent that the greatest possible material savings can be achieved during the manufacture of the closure device 1.

[0084] Figs. 2A to 2D show a second embodiment which, with regard to many features, is identical to the first embodiment of Figs. 1A to 1D. Therefore, the following will focus exclusively on the differences from the first embodiment.

[0085] In the embodiment shown in Figs. 2A to 2D, the recesses 8 extend to a lower limit, which is arranged axially above a lower limit of the first guide means 5. The cap skirt 3 thus has, axially below the first guide means 5, a region extending over the full circumference of 360 degrees without a recess 8 of the inner surface 6. As can be clearly seen in Fig. 2D, the wall thickness of the cap skirt 3 in the circumferential regions defined by a recess 8 of the inner surface and an elevation 9 is greater in a reinforcement section 17 below the first guide means 5 than in an axially above region in which the recess 8 extends. The closure device 1 shown here thus additionally has a reinforcement section 17, the wall thickness of which is, for example, 1 mm greater than in the region lying above it in the axial direction and having the guide means 5 (internal thread).In further embodiments, the wall thickness of the reinforcement section 17 can be, for example, 0.8 mm to 1.5 mm greater than in the area lying above it in the axial direction. The elevations 9 extend, for example, over an axial length of 15 mm (in other embodiments, over an axial length of 10 mm to 20 mm). The combination of the recesses 8, elevations 9, and the reinforcement section 17 results in the greatest possible strength of the closure device 1 while simultaneously maintaining a comparatively low material requirement and weight of the closure device.

[0086] The reinforcement section 17 shown here consists of segments spaced apart from one another in the circumferential direction, each extending axially below a recess 8 and in the circumferential direction over the circumferential extent of the respective recess 8. In other words, the elevations 9 extend axially further downward than the recesses 8 lying inward therefrom, whereby a segment of the reinforcement section 17 is formed below each recess 8.

[0087] The embodiment shown in Figs. 2A to 2D also has a guarantee ring 10 with a greater axial extent than the embodiment shown in Figs. 1A to 1D. While the embodiment shown in Figs. 1A to 1D has a guarantee ring 10 whose outer section extends over an axial height of 2 to 3 mm, the outer section of the guarantee ring 10 shown in Figs. 2A to 2D extends over an axial height of 4 to 6 mm. Furthermore, the embodiment shown in Figs. 2A to 2D has, compared to the embodiment shown in Figs. 1A to 1D, a gripping serration on the outer surface 6 of the cap skirt 3 in the areas of the outer surface lying between two elevations 9.

[0088] Also, the flexible band section 12 of the guarantee ring of the embodiment shown in Figs. 2A to 2D has fewer weakened sections 18, namely a total of five, than the embodiment shown in Figs. 1A to 1D.

[0089] 2A to 2D, the cap skirt 3 also has a circumferential ring 14 with a grip on its outer surface 6 below the axial region in which the first guide means 5 extends. The circumferential ring 14 protrudes radially only relative to the regions of the outer surface 6 of the cap skirt 3 that adjoin the ring 14 axially above. The closure device 1 also has a support ring 16 that extends circumferentially to the outer surface of the cap cover plate 4 and defines a cylindrical and upwardly open cavity above the cap cover plate 4. With this support ring 16, the closure cap 1 can be fixed relative to the container neck after it has been lifted off a container for the first time - and after the closure cap 1 has been turned over and placed on the container neck. The closure device 1 shown in Figs. 2A to 2D also has a2A to 2D within the cavity formed by the support ring. If the closure cap 1 is now fixed relative to the container neck as described above and rotated about the closure cap axis 50, the cutting tooth performs a circular cutting motion. This cutting motion can be used, for example, to cut a sealing film that initially seals the pouring opening of the container neck in a liquid-tight manner.

[0090] Figures 3A to 3D show a third embodiment, which is identical to the first embodiment of Figures 2A to 2D in many features. Therefore, the following will focus exclusively on the differences from the second embodiment.

[0091] In the closure device shown in Figs. 3A to 3D, the first guide means 5 designed as an internal thread extends continuously over the inner surface 6 of the cap skirt 3. In particular, it can be clearly seen in Fig. 3D that in each circumferential angular range comprising recesses, two recesses axially surround an internal thread profile.

[0092] While the invention has been illustrated and described in detail in the drawings and the foregoing description, this illustration and description are given by way of example only and are not intended to limit the scope of the invention as defined by the claims. The invention is not limited to the disclosed embodiments.

[0093] Modifications of the disclosed embodiments will be apparent to those skilled in the art from the drawings, the description, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. The mere fact that certain features are claimed in different claims does not exclude their combination. Reference signs in the claims are not intended to limit the scope of protection. List of Reference Signs

[0094] 1 locking device

[0095] 2 caps

[0096] 3 cap coat

[0097] 4 cap cover plate

[0098] 5 first leadership tool

[0099] 6 Exterior surface

[0100] 6a Section of the outer surface 6

[0101] 7 inner surface

[0102] 8 Deepening

[0103] 9 Increase

[0104] 10 Guarantee ring

[0105] 11 Weakening line / easily tearable webs

[0106] 12 Flexband section

[0107] 13 locking projection

[0108] 14 circumferential ring with grip

[0109] 15 Section with handle ribbing

[0110] 16 Support ring

[0111] 17 Reinforcement section

[0112] 18 weakened section

[0113] 50 cap axis

[0114] 101 Cutting plane

[0115] 102 cutting plane

[0116] 103 Cutting plane

Claims

P a t e n t a n s p r ü c h e 1. A closure device (1) for selectively closing or uncovering a pouring opening of a container, wherein the closure device (1) comprises a closure cap (2), wherein the closure cap (2) has a cap cover plate (4) and a cap skirt (3) peripherally adjoining the cap cover plate (4), wherein the cap skirt (3) extends at least partially cylindrically or conically around a closure cap axis (50), wherein the closure cap has a first guide means (5), wherein the first guide means (5) is designed and arranged such that it can be brought into engagement with a guide means of a container in order to close a container opening of the container, wherein the cap skirt (3) has an outer surface (6) directed away from the closure cap axis (50) and an inner surface (7) directed towards the closure cap axis (50),wherein the first guide means (5) is arranged on the inner surface (7) of the cap skirt (3), wherein according to a first possibility, the inner surface (7) of the cap skirt (3) has a plurality of recesses (8), wherein each of the recesses (8) extends planarly over a respective circumferential angle section and a respective axial section, wherein the radial distance of the inner surface (7) to the closure cap axis (50) within a recess (8) is greater than in those sections of the inner surface (6) which directly adjoin the respective recess (8) on both sides in the circumferential direction, and / or according to a second possibility, the cap skirt (3) has a reinforcing section (17), wherein the wall thickness of the cap skirt (3) in at least one sectional plane which includes the closure cap axis (50) and the reinforcing section (17),in the reinforcement section (17) is greater than the wall thickness of the cap jacket (3) in at least one wall section of the cap jacket (3) arranged axially between the reinforcement section (17) and the cap cover plate (4), wherein the reinforcing section (17) is arranged axially on the side of the first guide means (5) facing away from the cap cover plate (4) and / or at least partially at an axial height of the first guide means (5).

2. Closure device (1) according to the preceding claim, wherein the closure device (1) is designed at least according to the first possibility, wherein the outer surface (6) of the cap skirt (3) has a plurality of elevations (9), wherein each of the elevations (9) extends flatly over a respective circumferential angle section and a respective axial section, wherein the radial distance of the outer surface to the closure cap axis (50) is greater in the region of an elevation (9) than in those sections of the outer surface (6 which directly adjoin the respective elevation (9) on both sides in the circumferential direction.

3. Closure device (1) according to one of the preceding claims, wherein the closure device (1) is designed at least according to the first possibility, wherein at least one depression (8) of the inner surface (7) extends at least partially within a surface section of the inner surface (7) defined by the circumferential angle section and the axial section of a protrusion (9) of the outer surface (6), wherein preferably a plurality of depressions (8) of the inner surface (7) each extend at least partially within a respective surface section, wherein the respective surface section is defined by the circumferential angle section and the axial section of a respective protrusion (9) of the outer surface (6), wherein particularly preferably at least half of all depressions (8) of the inner surface (7) each extend at least partially within a respective surface section,which is defined by the circumferential angle section and the axial section of a respective elevation (9) of the outer surface (6).

4. Closure device according to one of the preceding claims, wherein the closure device (1) is designed at least according to the first possibility, wherein the first guide means (5) is interrupted in the circumferential direction in the region of at least one recess (8) of the inner surface (7), so that the at least one recess (8) separates two guide means segments of the first guide means (5) that are adjacent when viewed in the circumferential direction, wherein preferably the first guide means (5) is interrupted in the circumferential direction in the regions of a plurality of recesses (8) of the inner surface (7) in each case, so that the plurality of recesses (8) each separate two guide means segments that are adjacent when viewed in the circumferential direction.

5. Closure device (1) according to one of the preceding claims, wherein the closure device (1) is designed at least according to the first possibility, wherein the first guide means (5) extends in the circumferential direction over the region of at least one pair of axially adjacent recesses (8) of the inner surface (7), so that the first guide means (5) separates the recesses (8) of the at least one pair from one another when viewed axially, wherein preferably the first guide means (5) extends in the circumferential direction over the regions of several pairs of axially adjacent recesses (8) of the inner surface (7), so that the first guide means (5) separates each pair of recesses (8) of the several pairs from one another when viewed axially.

6. Closure device (1) according to one of the preceding claims, wherein the closure device (1) is designed at least according to the first possibility, wherein the inner surface (7) of the cap jacket (3) has at least 4 recesses (8), wherein the inner surface (7) of the cap jacket (3) preferably has at least 7 recesses (8), wherein the inner surface (7) of the cap jacket (3) particularly preferably has at least 10 recesses (8).

7. Closure device (1) according to one of the preceding claims, wherein the closure device (1) is designed at least according to the first possibility, wherein the distance between two circumferentially adjacent recesses (8) of the inner surface (7) is a periodic function of the circumferential angle, wherein preferably the plurality of recesses (8) of the inner surface (7) are arranged equidistantly in the circumferential direction.

8. Closure device (1) according to one of the preceding claims, wherein the closure device (1) is designed at least according to the first possibility, wherein several of the recesses (8) of the inner surface (7) and preferably all of the recesses (8) of the inner surface (7) extend axially in the direction of the cap cover plate (4) exclusively up to an upper axial limit and not beyond, wherein the upper axial limit is axially a maximum of 5 mm away from the cap cover plate (4), wherein preferably the upper axial limit is a maximum of 2 mm away from the cap cover plate (4), wherein the upper axial limit is particularly preferably substantially identical to the axial position of the inner surface of the cap cover plate (4).

9. Closure device (1) according to one of the preceding claims, wherein the closure device (1) is designed at least according to the first possibility, wherein the cap skirt (3) has at least a first cylinder section and a second cylinder section, wherein the second cylinder section is arranged on the side of the first cylinder section facing away from the cap cover plate (4), wherein the second cylinder section has an inner radius in a region without a recess that is larger than the inner radius of the first cylinder section in a region without a recess, wherein the first cylinder section has the recesses (8) of the inner surface (7), wherein several of the recesses (8) and preferably all of the recesses (8) of the inner surface (6) extend axially away from the cap cover plate (4) to a lower axial limit and not beyond,wherein, according to a first alternative, the lower axial limit is directly adjacent to the second cylinder section or, according to a second alternative, the lower axial limit is axially spaced from the second distance and is thus arranged closer to the cap cover plate (4) than the second cylinder section.

10. Closure device (1) according to one of the preceding claims, wherein the closure device (1) is designed at least according to the first possibility, wherein at least half of the recesses (8) of the inner surface (7) extend axially over at least 8 mm and a maximum of 25 mm, preferably over at least 12 mm and a maximum of 18 mm and / or extend in the circumferential direction over a circumferential angle of at least 5 degrees and a maximum of 20 degrees, preferably at least 8 degrees and a maximum of 14 degrees.

11. Closure device (1) according to one of the preceding claims, wherein the closure device (1) is designed at least according to the second possibility, wherein the reinforcing section (17) extends in the circumferential direction as a complete ring over a circumferential angle of 360 degrees.

12. Closure device (1) according to one of the preceding claims, wherein the closure device (1) is designed at least according to the second possibility, wherein the reinforcing section (17) has ring segments, wherein the closure device (1) has interruption sections, wherein the ring segments each extend in the circumferential direction and are separated from one another by the interruption sections, wherein the interruption sections have a smaller wall thickness than the ring segments.

13. Closure device (1) according to one of the preceding claims, wherein the closure device (1) is designed according to the first and second possibility, wherein the cap jacket (3) has a constant first inner radius in at least one first sectional plane which is perpendicular to the closure cap axis (50) and which intersects the reinforcement section (17), preferably all reinforcement sections (17), wherein the cap jacket (3) has a second inner radius outside the recesses (8) in at least one second sectional plane which is perpendicular to the closure cap axis and which intersects a recess (8), preferably all recesses (8), wherein the first inner radius is either equal to the second inner radius or the first inner radius is greater than the second inner radius.

14. Closure device (1) according to one of the preceding claims, wherein the closure device (1) has a guarantee band, preferably a guarantee ring (10), wherein the guarantee band is connected to the cap jacket (3) via at least one easily tearable connection (11), wherein the guarantee band is completely detachable from the cap jacket (3) according to a first alternative or the guarantee band is connected to the cap jacket (3) via a connecting element according to a second alternative in such a way that the connecting element can withstand a tensile force of 12.5 Newtons without the closure cap (2) becoming detached from the guarantee band.

15. Combination of a container with a closure device (1) according to one of the preceding claims, wherein the container has a container opening, wherein the container has a second guide means, wherein the first guide means (5) and the second guide means are engageable with each other to close the pouring opening, wherein the first guide means (5) and the second guide means are disengageable to completely release the container opening.

Images