Resource savings closing unit

Description

1 / 32 RESOURCE SAVINGS CLOSING UNIT

[001] The present invention relates to a closing unit for selectively closing or releasing a pouring opening of a container, wherein the closing unit comprises a closing cap, wherein the closing cap has a cap cover plate and a cap skirt adjacent to the cap cover plate on the circumferential side, wherein the cap skirt extends at least in cylindrical or conical sections around a closing cap axis, wherein the closing cap has a first guide means, wherein the first guide means is configured and arranged so that it can be engaged 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 closing cap axis and an inner surface directed towards the closing cap axis, wherein the first guide means is arranged on the inner surface of the cap skirt.Furthermore, the present invention also relates to a combination of a container with a corresponding closure unit.

[002] Based on document DE 20 2022 103 032 U1, a closing element is known for a liquid container with a closing cap, which excludes or at least reduces the risk of liquid residue escaping from an open captive closing cap.

[003] Closure units for containers are produced in large quantities. Therefore, it is desirable to use only as many resources as absolutely necessary for the production of a closure unit. This not only reduces production costs but also reduces the ecological footprint of the closure unit. For example, document DE 10 2025 111 245 A1 deals with a closure cap that is easy to produce, consists of less plastic, and ensures better retention on a bottle neck, even under increased internal pressure. Another challenge is that closure units for material saving Petition 870250087304, dated 09 / 26 / 2025, page 12 / 58 2 / 32 for containers must have sufficient strength, especially if they are intended for containers in which hazardous substances are stored or transported.

[004] In this context, it is a problem of the present invention to provide a closing unit that can be produced in a way that saves resources and, at the same time, has high strength.

[005] This problem is solved by a closing unit for selectively closing or releasing a pouring opening of a container, wherein the closing unit comprises a closing cap, wherein the closing cap has a cap cover plate and a cap skirt adjacent to the cap cover plate on the circumferential side, wherein the cap skirt extends at least in cylindrical or conical sections around a closing cap axis, wherein the closing cap has a first guide means, wherein the first guide means is configured and arranged in such a way that it can be engaged 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 closing cap axis and an inner surface directed towards the closing cap axis, wherein the first guide means is arranged on the inner surface of the cap skirt.

[006] According to a first possibility, the inner surface of the lid skirt may have a plurality of recesses, wherein each of the recesses extends along a respective circumferential angle section and a respective axial section, wherein the radial distance from the inner surface to the lid axis is greater within a recess than in sections of the inner surface that join directly to the respective recess on both sides in the circumferential direction.

[007] According to a second possibility, the lid skirt may have a reinforcing section, in which the wall thickness of the skirt of Petition 870250087304, dated 09 / 26 / 2025, p. 13 / 58 3 / 32 The thickness of the cover in at least one section plane, comprising the cover axis and the reinforcement section, is greater in the reinforcement section than the wall thickness of the cover skirt in at least one wall section of the cover skirt axially arranged between the reinforcement section and the cover plate, wherein the reinforcement section is axially arranged on the side of the guide means facing away from the cover plate and / or at least partially at an axial height from the guide means. The latter means that the reinforcement section 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. In this case, the lower end section represents a section of the cover skirt facing axially away from the cover plate, which forms the guide means region.For example, the wall thickness of the lid skirt at the reinforcement section is at least 2 mm greater than at the wall section located between the reinforcement section and the lid cover plate.

[008] According to one embodiment of the present invention, the first option is present alone. According to one embodiment of the present invention, the second option is present alone. According to one embodiment of the present invention, the first and second options are present in combination.

[009] Both the first and second possibilities result in high strength of the closure unit. In particular, the combination of recesses on the inner surface of the lid skirt and at least one reinforcing section of the lid skirt results in extraordinarily high strength of the closure unit along a large axial length of the lid skirt. The first and second possibilities, as well as their combination, simultaneously allow for resource-saving production of the closure unit. This is because the recesses on the inner surface of the lid skirt increase the rupture strength of the lid skirt. The lid skirt Petition 870250087304, dated 09 / 26 / 2025, page 14 / 58 4 / 32 is more capable of compensating for external forces through elastic recesses than an internal surface without recesses that is flat in the circumferential direction. It has also been shown that the strength of a closure unit that has a reinforcing section approximately matches the strength of a closure unit that has a continuously greater wall thickness. Thus, the reinforcing section allows for a closure unit with comparable strength, but for which fewer resources must be used.

[010] For the purposes of the present invention, guide means, such as internal threads or bayonet elements, should not be considered as part of the lid skirt, even if they may be configured integrally with the lid skirt in the embodiments of the present invention. In particular, when considering the inner surface of the lid skirt and its distance from the closing lid axis, the first guide means or any additional guide means disposed on the inner surface is excluded from consideration. Consequently, the first guide means or any additional guide means with their profile thicknesses also does not produce a recess in the inner surface of the lid skirt in the sense of the present invention. A first guide means may, for example, be an internal thread.

[011] According to one embodiment of the closing unit according to the invention, the closing unit is configured 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 from the inner surface of the closing cap shaft within a recess is greater than the sum of the radial distance of the first guide means from the closing cap shaft and the profile depth of the first guide means. In other words, a recess base is additionally radially spaced from the closing cap shaft than the base of a guide means profile, the guide means profile base. Petition 870250087304, dated 09 / 26 / 2025, page 15 / 58 5 / 32 According to one embodiment of the present invention, a region of the inner surface of the lid skirt without a recess constitutes, among other things, a guide medium base profile. For example, the base of a recess is radially spaced at least 1 mm further from the closing lid axis than the base of the guide medium profile.

[012] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein the outer surface of the lid skirt has a plurality of elevations, wherein each of the elevations extends planarly through a respective circumferential angle section and a respective axial section, wherein the radial distance of the outer surface of the closing lid axis is greater in the region of an elevation than in sections of the outer surface that directly join the respective elevation on both sides in the circumferential direction. For example, the respective elevation of the outer surface projects radially by 1 mm (in other embodiments, for example, by 0.5 mm to 1.5 mm) from the sections of the outer surface that directly join the respective elevation on both sides in the circumferential direction.These elevations on the outer surface also contribute to increased strength of the closing lid. According to one embodiment, at least one of the elevations is configured as a mesh on the outer surface of the lid skirt that extends axially and parallel to the lid axis. According to a further embodiment, the side surfaces of the respective mesh may, for example, run parallel to the lid axis.

[013] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, in which at least one of the recesses of the inner surface is configured as an elongated groove that extends axially parallel to the axis of the closing cover. In other words, those recess limits that delimit the recess in the direction Petition 870250087304, dated 09 / 26 / 2025, page 16 / 58 6 / 32 circumferential recesses extend parallel to the axis of the closing cap. According to one embodiment of the closing unit according to the invention within the meaning of the first possibility, each of the recesses on the inner surface is configured as an elongated groove that extends axially parallel to the axis of the closing cap. Such recesses are associated with simple and economical production. Furthermore, the corresponding injection-molded closing units can be demolded very easily.

[014] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein at least one recess of the inner surface extends at least in sections 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 recesses of the inner surface extend at least in sections 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 a particularly preferred manner, at least half of all recesses on the inner surface extend at least in sections within a respective surface section defined by the circumferential angle section and the axial section of a respective elevation on the outer surface. This makes it possible to achieve high closing cover strength while using less material. The elevations also provide a comfortable contact surface for the fingers to grip and move the closing unit, for example, when opening and closing the closing unit.

[015] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, in which at least one recess of Petition 870250087304, dated 09 / 26 / 2025, page 17 / 58 7 / 32 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 a plurality of recesses 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, wherein particularly preferably at least half of all recesses or all recesses 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 may be arranged in particular within the same circumferential angle section.This results in extremely low material costs for manufacturing the closing unit without having to compromise the strength of the closing lid. In fact, the correspondingly configured elevations of the outer surface and recesses of the inner surface can even increase strength compared to a largely flat lid skirt.

[016] According to one embodiment of the closing unit according to the invention, the first guide means is an internal thread. An internal thread within the meaning of the present invention may have a continuous profile or may also consist of several segments spaced apart from each other. The internal thread or an internal thread segment has a profile depth greater than zero and a thread pitch greater than zero along its length.

[017] According to one embodiment of the closing unit according to the invention, the first guide means is a bayonet element. The bayonet element can be configured as a profile with a profile depth greater than zero, wherein the profile extends planarly in Petition 870250087304, dated 09 / 26 / 2025, page 18 / 58 8 / 32 sections in a plane perpendicular to the closing cap axis. In other words, the profile has a slope equal to zero in such a section. Furthermore, the profile may have a ramp area in which the profile rises with a slope angle greater than zero relative to the surface perpendicular to the cap axis.

[018] According to one embodiment of the closing unit according to the invention, the first guide means is configured so that the closing unit is a flip-top closing unit.

[019] According to one embodiment of the closing unit according to the invention, the closing unit is configured 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 adjacent guide means segments from the first guide means as seen in the circumferential direction. According to one embodiment of the closing unit according to the invention, the closing unit is configured 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 in each case, such that the several recesses separate two adjacent guide means segments from each other when seen in the circumferential direction.This can further reduce the amount of material required to manufacture a closing unit without significantly reducing its strength.

[020] According to one embodiment of the closing unit according to the invention, the first guide means has a profile depth to 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 profile depth value and the second profile depth value are not equal. Particularly, in terms of Petition 870250087304, dated 09 / 26 / 2025, page 19 / 58 9 / 32 first embodiment 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 an area of ​​the inner surface with a recess can also be increased compared to the profile depth of the first guide means in an area of ​​the inner surface without a recess, or be identical to the latter. These embodiments also allow for resource-saving production and maintain the full functionality of the closing unit.

[021] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein the first guide means extends in the circumferential direction through 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 at least one pair from each other when viewed axially, wherein preferably the first guide means extends in the circumferential direction through the regions of a plurality of pairs of axially adjacent recesses of the inner surface, such that the first guide means separates each pair of recesses of the plurality of pairs from each other when viewed axially. This allows for continuous recesses and a thread profile, which is known to many users and is therefore associated with a greater sense of security regarding the tightness of the closing unit.

[022] In particular, combinations of recesses that are bridged by sections of the first guide medium and recesses that separate two guide medium segments from each other may also be present within the meaning of the present invention.

[023] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least Petition 870250087304, dated 09 / 26 / 2025, page 20 / 58 10 / 32 according to the first possibility, where the inner surface of the lid skirt has at least 4 recesses and / or the outer surface of the lid skirt has at least 4 elevations.

[024] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein the inner surface of the lid skirt has at least 7 recesses and / or the outer surface of the lid skirt has at least 7 elevations.

[025] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein the inner surface of the lid skirt has at least 10 recesses and / or the outer surface of the lid skirt has at least 10 elevations.

[026] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein the inner surface of the lid skirt has a maximum of 30 recesses and / or the outer surface of the lid skirt has a maximum of 30 elevations.

[027] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein the inner surface of the lid skirt has a maximum of 20 recesses and / or the outer surface of the lid skirt has a maximum of 20 elevations.

[028] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein the inner surface of the lid skirt has a maximum of 15 recesses and / or the outer surface of the lid skirt has a maximum of 15 elevations.

[029] In tests, it was found that with a number of recesses according to the parameter ranges established by these modalities Petition 870250087304, dated 09 / 26 / 2025, page 21 / 58 11 / 32 both for each modality on its own and in combination with the modalities - the desired strength of the closing lid is achieved with a simultaneously low material cost.

[030] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein the distance between two adjacent recesses in the circumferential direction is a periodic function of the circumferential angle. Therefore, the size of the distance between two adjacent recesses and / or two adjacent elevations follows a recurring regularity. For example, the distances in this direction may have the following regularity, where the distances are given in angular measure: 20 degrees, 10 degrees, 20 degrees, 10 degrees, etc. A corresponding regularity allows for a closing unit whose center of mass lies on the axis of the closing cap and leaves a valuable haptic impression on the user.

[031] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein the plurality of recesses on the inner surface and / or elevations on the outer surface are arranged equidistantly in the circumferential direction. Consequently, the distance between two adjacent recesses in the circumferential direction is identical for all pairs of adjacent recesses in the circumferential direction. This ensures that the closing strength is largely independent of the circumferential angle range.

[032] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein several of the recesses of the inner surface and preferably all the recesses of the inner surface extend axially in the direction of the cover plate exclusively up to an upper axial limit and not beyond, wherein the axial limit Petition 870250087304, dated 09 / 26 / 2025, page 22 / 58 The upper 12 / 32 section is axially positioned at a maximum distance of 5 mm from the lid cover plate. According to a related embodiment, the upper axial limit is at a maximum distance of 2 mm from the lid cover plate. In particular, the upper axial limit can be essentially identical to the axial position of the inner surface of the lid cover plate. The correspondingly configured recesses consequently extend over a large axial area of ​​the lid skirt and, therefore, allow for particularly high savings in the resources used to manufacture the closing unit.

[033] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein the lid skirt has at least one first cylinder section and has a second cylinder section, wherein the second cylinder section is disposed on the side of the first cylinder section facing away from the lid cover plate, wherein the second cylinder section has an inner radius in a non-recessed area that is greater than the inner radius of the first cylinder section in a non-recessed area, wherein the first cylinder section has recesses on the inner surface, wherein several of the recesses and preferably all of the recesses on the inner surface extend axially in a direction facing away from the lid cover plate exclusively 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 cylinder section and is thus disposed closer to the lid cover plate than the second cylinder section. Among other things, this makes it possible to attach a flexible band retaining ring. The retaining ring can, for example, be attached to the lower end of the closing lid as an imaginary axial continuation of the second cylinder section and be connected to the lid skirt. Petition 870250087304, dated 09 / 26 / 2025, page 23 / 58 13 / 32 for an easily breakable connection. Due to the larger inner radius of the second cylinder section compared to the first cylinder section, the security ring may also have a flexible inward-folding band with which the security ring can be engaged with an anti-theft ring on a container neck.

[034] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein the recesses of the inner surface extend axially in a direction away from the cover plate exclusively 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 recess the lower axial limit associated with the respective recess is axially disposed between a lower limit of the guide means located in the respective circumferential region and the cover plate. In this way, a region of the inner surface without recesses extending along the entire circumferential angle of 360 degrees can be configured in the lower region of the guide means and / or below the guide means (e.g., thread).In circumferential sections where there is, however, an elevation of the outer surface, the wall thickness in the area axially below the thread is consequently significantly greater than in the areas axially above it. These circumferential sections, in which an elevation of the outer surface is present, form a reinforcing section within the meaning of the present invention. As a result, the strength of the closing unit is reinforced in an axial region where a high application of force is expected during use, since it is precisely in this axial region that the closing units are compressed by the user when they are unscrewed from a container.

[035] In one embodiment, the reinforcing sections are arranged exclusively below an associated recess (i.e., in one direction Petition 870250087304, dated 09 / 26 / 2025, page 24 / 58 14 / 32 facing away from the lid cover plate relative to the respective recess). In one embodiment, the wall thickness of the lid 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 lid skirt in a wall section arranged axially between the reinforcement section and the lid cover plate.

[036] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein the lid skirt has a constant wall thickness in at least one sectional plane perpendicular to the closing lid axis, which also intersects at least part of the recesses of the inner surface. According to one embodiment, the closing unit has an essentially constant wall thickness in a cutting plane, wherein any central guide elements are not taken into account when determining the wall thickness, wherein the cutting surface also intersects at least part of the recesses of the inner surface, which extend within a surface section defined by the circumferential angle section of an elevation of the outer surface. This allows for an efficient manufacturing process by means of injection molding.This occurs because a constant wall thickness of the cap skirt is accompanied by a constant distance between the molds in the area of ​​the cap skirt to be injected and, as a result, by a uniform flow behavior of the casting material. This also makes the cooling and curing process homogeneous in an advantageous way, which can further increase the strength of the cap skirt.

[037] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, in which at least half of the recesses of the inner surface extend, each, axially by at least Petition 870250087304, dated 09 / 26 / 2025, page 25 / 58 15 / 32 minus 8 mm. According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, in which at least half of the elevations on the outer surface extend axially by at least 9 mm.

[038] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, in which at least half of the recesses on the inner surface extend axially by at least 12 mm. According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, in which at least half of the elevations on the outer surface extend axially by at least 13 mm.

[039] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, in which at least half of the recesses on the inner surface extend axially by a maximum of 25 mm. According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, in which at least half of the elevations on the outer surface extend axially by a maximum of 30 mm.

[040] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, in which at least half of the recesses on the inner surface extend axially by at most 18 mm. According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, in which at least half of the recesses on the inner surface extend axially by at most 18 mm. Petition 870250087304, dated 09 / 26 / 2025, page 26 / 58 16 / 32 minus half of the elevations on the outer surface extend axially by a maximum of 23 mm.

[041] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein at least half of the recesses on the inner surface each extend by a circumferential angle of at least 5 degrees in the circumferential direction. According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein at least half of the elevations on the outer surface each extend by a circumferential angle of at least 7 degrees in the circumferential direction.

[042] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein at least half of the recesses on the inner surface each extend by a circumferential angle of at least 8 degrees in the circumferential direction. According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein at least half of the elevations on the outer surface each extend by a circumferential angle of at least 10 degrees in the circumferential direction.

[043] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, in which at least half of the recesses on the inner surface extend, each, by a circumferential angle of at most 20 degrees in the circumferential direction. According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, in which at least half of the elevations on Petition 870250087304, dated 09 / 26 / 2025, page 27 / 58 17 / 32 outer surfaces each extend by a circumferential angle of at most 25 degrees in the circumferential direction.

[044] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein at least half of the recesses on the inner surface each extend by a circumferential angle of no more than 14 degrees in the circumferential direction. According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein at least half of the elevations on the outer surface each extend by a circumferential angle of no more than 20 degrees in the circumferential direction.

[045] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein at least half of the recesses on the inner surface extend, each in the circumferential direction, by an arc length that is equal to or less than the axial extent of the respective recess. According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein at least half of the elevations on the outer surface extend in the circumferential direction in each case by an arc length that is equal to or less than the axial extent of the respective elevation.

[046] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, in which at least half of the recesses of the inner surface extend in the circumferential direction in each case by an arc length that corresponds at most to half the axial extension of the respective recess. According to one embodiment of the closing unit according to the invention, the unit Petition 870250087304, dated 09 / 26 / 2025, page 28 / 58 The 18 / 32 closure is configured at least according to the first possibility, in which at least half of the elevations on the outer surface extend, each one, in the circumferential direction by an arc length that corresponds to the greater part of the axial extent of the respective elevation.

[047] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the second possibility, in which the reinforcing section extends in the circumferential direction as a complete ring by a circumferential angle of 360 degrees. This allows a high degree of rigidity in an area of ​​the closing unit that is particularly stressed in practice, so that, for example, the risk of deformation of the closing unit due to external forces is reduced.

[048] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the second possibility, wherein the reinforcing section has ring segments, wherein the closing unit has interruption sections, wherein the ring segments extend, each in the circumferential direction, and are separated from each other by interruption sections, wherein the interruption sections have a lower wall thickness than the ring segments. This also increases the stiffness of the closing unit in a vulnerable area of ​​the closing unit. At the same time, however, it is possible to achieve the increase in stiffness with the minimum possible material. According to one embodiment, the annular segments of the reinforcing section have an arc length that is less than or equal to the arc length of the circumferential angle section of the elevation on the outer surface of the cover skirt.

[049] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the second possibility, in which the lid skirt has a Petition 870250087304, dated 09 / 26 / 2025, page 29 / 58 19 / 32 first constant inner radius in at least one first section plane that is perpendicular to the closing cover axis and that intersects the reinforcement section, preferably all reinforcement sections. In other words, the inner radius of the cover skirt is the distance between the inner surface of the cover skirt and the closing cover axis. According to another embodiment, the closing unit can be additionally configured according to the first possibility, wherein the cover 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 section plane perpendicular to the closing cover axis and intersecting the recess, preferably all recesses, wherein the first inner radius is 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 is formed on the inner surface of the lid skirt below the recesses; that is, the inner radius is constant throughout the entire 360-degree circumferential angle. This ring is recessed outward from the overlapping inner surface of the lid skirt (without recesses) or is axially flush with that inner surface.

[050] According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein at least two recesses of the inner surface of the lid skirt are arranged diametrically opposite to each other, wherein preferably each of the recesses of the inner surface of the lid skirt is arranged diametrically opposite to a recess of the inner surface of the lid skirt. According to one embodiment of the closing unit according to the invention, the closing unit is configured at least according to the first possibility, wherein at least two elevations on the outer surface of the lid skirt are arranged diametrically opposite to each other, wherein preferably each of the elevations is arranged diametrically opposite to an elevation on the outer surface of the lid skirt. Petition 870250087304, dated 09 / 26 / 2025, page 30 / 58 20 / 32

[051] According to one embodiment of the closure unit according to the invention, the closure unit comprises a plastic material. In particular, the closure unit may comprise one or more plastic materials. In particular, the closure unit may be manufactured by injection molding.

[052] According to one embodiment of the closing unit according to the invention, the closing unit has a maximum internal diameter of 25 mm to 80 mm, preferably 60 mm to 70 mm.

[053] According to one embodiment of the closing unit according to the invention, the closing unit has a total axial height of 15 mm to 50 mm, preferably 30 mm to 40 mm.

[054] According to one embodiment of the closing unit according to the invention, the closing cover has at least one locking projection to receive a sealing washer, wherein the at least one locking projection is disposed inside and between the cover plate and the first guide means. In particular, such embodiment may also have a retaining ring that is completely detachable or captive to indicate the initial opening of the closing unit. In combination with a sealing washer, a sufficient sealing and safety effect is then provided.

[055] According to one embodiment of the closing unit according to the invention, the closing cap has a support ring that extends circumferentially around the closing cap axis and a cutting tooth, wherein both the support ring and the cutting tooth are disposed on the outer surface of the cap cover plate. In other words, the support ring and the cutting tooth are disposed above the cap cover plate. Particularly, the support ring may be configured as an axial extension of the cap skirt, which extends axially beyond the cap cover plate. The cutting tooth may have a cutting edge extending axially at least partially. Such Petition 870250087304, dated 09 / 26 / 2025, page 31 / 58 21 / 32 closure units are particularly advantageous if the container opening of a container, whose pouring opening is closed by the closure unit, has an additional sealing film with which the pouring opening is closed before first use. In such a case, the closure cap can be unscrewed the first time it is opened, placed upside down on the neck of the container and secured in place relative to the neck of the container by the support ring. If the closure cap is then rotated around the axis of the closure cap, the cutting tooth cuts the sealing film and thus allows the pouring opening of the container to be used.

[056] According to one embodiment of the closing unit according to the invention, the closing unit has a locking band, preferably a locking ring, wherein the locking band is connected to the lid skirt by at least one easily breakable connection, wherein the locking band can be completely detached from the lid skirt according to a first alternative. According to a second alternative, the locking band is captive to the lid skirt by a connecting element. Preferably, the locking band is connected to the lid skirt by a connecting element in such a way that the connecting element can withstand a tensile force of 12.5 newtons without the closing lid detaching from the locking band. The locking band can be configured as a complete locking ring. In particular, the locking band can be arranged on the side of the lid skirt facing away from the lid cover plate.

[057] According to one embodiment of the closing unit according to the invention, the closing unit has a retaining ring, wherein the retaining ring is connected to the lid skirt by an easily breakable connection. Such a retaining ring may have a flexible band, wherein the flexible band may be configured as a ring or as a ring section and may be articulated to an upper section of the Petition 870250087304, dated 09 / 26 / 2025, page 32 / 58 22 / 32 security ring, so that the flexible band can be bent towards the closing lid axis in order to be engaged with a tamper-evident ring of a container in this bent position. The flexible band therefore allows the security ring to be connected to the container. The easily breakable connection between the security ring and the lid skirt can then be broken by axial action forces when the closing lid is opened.

[058] According to one embodiment of the closing unit according to the invention, the closing unit has a locking ring, wherein the locking ring is connected to the lid skirt by an easily breakable connection, wherein the locking ring has internal locking elements, wherein the locking elements are configured so that they can be engaged with projections of a container neck in order to prevent co-rotation of the locking ring and the closing lid. This can cause the easily breakable connection to rupture due to shear forces.

[059] The embodiments of the closing unit according to the invention described above may be combined with each other, unless mutually exclusive alternatives are expressly mentioned.

[060] The present invention also relates to a combination of a container with a closure unit according to one of the embodiments described above.

[061] 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 placed in engagement with each other in order to close the pouring opening and thus place it in a closed state, wherein the first guide means and the second guide means can be placed out of engagement in order to release the container opening and thus place it in an open state. Petition 870250087304, dated 09 / 26 / 2025, page 33 / 58 23 / 32

[062] In particular, the container opening may have a circular cross-sectional area. The combination may be configured in such a way that the circular cross-sectional area is completely released in the open state. For the purposes of the present invention, a circular cross-sectional area should be understood as a complete circular area and not, for example, an area merely in the shape of a ring.

[063] 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 closing unit is opened for the first time.

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

[065] The features of the closure unit according to the invention that have been described above in connection with such a closure unit may also be features of a closure unit that is a component of a combination of a container with a closure unit according to the invention. Conversely, a closure unit according to the invention may also have features that are described only in connection with a combination according to the invention.

[066] The terms “below” and “above” should be understood in the context of the present invention in such a way that “below an element” refers to an arrangement on one side of the corresponding element, which is achieved by following an axial direction pointing from the lid cover plate towards the lid skirt. Consequently, “above an element” refers to an arrangement on one side of the corresponding element, which is achieved by following an axial direction pointing from the lid skirt towards the lid cover plate.

[067] Additional features, advantages and embodiments of the present invention can be found in the accompanying figures and description. Petition 870250087304, dated 09 / 26 / 2025, p. 34 / 58 24 / 32 associated. It is shown schematically: Fig. 1A: a perspective view of a first embodiment of the closing unit according to the invention, Fig. 1B: a side view of the arrangement shown in Fig. 1A, Fig. 1C: a first cross-sectional view of the embodiment shown in Fig. 1A according to the cross-sectional plane 101 shown in Fig. 1B, Fig. 1D: a second cross-sectional view of the mode shown in Fig. 1A, Fig. 2A: a perspective view of a second embodiment of the closing unit according to the invention, Fig. 2B: a side view of the arrangement shown in Fig. 2A, Fig. 2C: a first cross-sectional view of the embodiment shown in Fig. 2A according to the cross-sectional plane 101 shown in Fig. 2B, Fig. 2D: a second cross-sectional view of the modality shown in Fig. 2A, Fig. 3A: a perspective view of a third embodiment of the closing unit according to the invention, Fig. 3B: a side view of the arrangement shown in Fig. 3A, Fig. 3C: a first cross-sectional view of the embodiment shown in Fig. 3A according to the cross-sectional plane 103 shown in Fig. 3B and Fig. 3D: a second cross-sectional view of the modality shown in Fig. 3A.

[068] Figure 1A provides an inner and outer view of a first embodiment of the closing unit 1 according to the invention. The outer surface 6 of the lid skirt 3 has a plurality of mesh-shaped elevations 9 that extend axially parallel to the closing lid axis 50, which are equidistantly arranged on the circumference of the lid skirt 3. The distance between two adjacent elevations 9 in the circumferential direction is therefore the same for all adjacent elevations 9. Each elevation 9 projects, for example, by 1 mm. Petition 870250087304, dated 09 / 26 / 2025, page 35 / 58 25 / 32 of sections 6a of the outer surface 6, which join directly to the respective elevation 9 on both sides in the circumferential direction. The inner surface 7 has recesses 8, which are also arranged equidistantly around the circumference of the cover skirt 3. Each of the recesses 8 extends axially parallel to the cover axis 50 and from the boundary between the cover skirt 3 and the cover plate 4 to a lower boundary below these sections of the first guide means 5, each of which joins the recesses 8 in the circumferential direction. The first guide means 5 is configured 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 each other in the circumferential direction.Each recess 8 also runs within and parallel to an elevation 9, so that the wall thickness is approximately constant along the circumferential direction in the recess area.

[069] In the embodiment shown in Fig. 1A, the imaginary thread of the first guide means 5 extends along a circumferential angle of more than 720 degrees in total. In order to completely unscrew or screw the closing unit 1 shown therein into a container neck with a corresponding external thread (not shown), a rotation angle of more than 720 degrees is therefore required, i.e., more than two complete turns. However, internal threads are also conceivable as the first guide means 5 with shorter imaginary threads, particularly in the range of 360 degrees to 720 degrees or even below 360 degrees.

[070] The cover skirt 3 has a circumferential ring 14 with an external clamping groove on its outer surface 6 below the axial area in which the first guide means 5 extends. The circumferential ring 14 projects radially from the outer surface areas 6 axially above and below the ring 14. This can be seen particularly clearly in Fig. 1D. A retaining ring 10, which is connected to the cover skirt 3 by a line of Petition 870250087304, dated 09 / 26 / 2025, page 36 / 58 26 / 32 weakening 11, joins the lid skirt 3 further down this ring 14.

[071] Fig. 1B also shows a section plane 101 perpendicular to the cover axis 50. The resulting top sectional view of this section plane 101 – that is, looking from the cover plate – is shown in Fig. 1C. Fig. 1C shows that the elevations 9 of the outer surface 6 and the recesses 8 of the inner surface 7 are configured to correspond to each other. In each case, a pair consisting of a recess 8 and an elevation 9 extends essentially within the same circumferential angle range. The section plane 101 is axially arranged in such a way that it also intersects the first guide means 5. This can be recognized in Fig. 1C by the fact that the radial material thickness varies in the circumferential direction in areas without recess 8.However, the wall thickness of the lid skirt 3 to be measured radially – in the sense of the present invention – is identical in all areas without recess 8, since the lid skirt 3 in the sense of the present invention is considered a separate element from the first guide means 5. Due to the one-piece configuration of the lid skirt 3 and the first guide means 5 in this case, the variation in material thickness occurs in the section plane shown in Fig. 1C, since the first guide means 5 configured as an internal thread with a thread pitch greater than zero naturally exhibits a radial variation in material thickness in the circumferential direction in a section plane perpendicular to the closing lid axis 50.

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

[073] Fig. 1D shows a cross-sectional view for a section plane containing the closing cap axis 50 and intersecting two diametrically opposed recesses 8 and associated elevations 9. It can be clearly seen here that the distance between the inner surface 7 and the cap axis of Petition 870250087304, dated 09 / 26 / 2025, page 37 / 58 27 / 32 closure 50 is greater within a recess 8 than in areas of the inner surface 7 that do not have a recess 8. The imaginary boundary between the inner surface 7 of the cover skirt and the first guide means 5 extends as an imaginary cylindrical extension of an area of ​​the inner surface 7 in which no component of the first guide means is disposed.

[074] The security ring 10 disposed below the cover skirt 3 has a flexible band section 12, which is clearly recognizable in Fig. 1D, which is articulated to an outer section of the security ring 10 at its lower end and is bent inward in the representation shown here. The flexible band section 12 also has weakening sections 18, wherein each weakening section 18 has a wall thickness that is reduced relative to the regions of the flexible band section 12 immediately adjacent to the respective weakening section 18 in the circumferential direction. These weakening sections 18 make it easier to bend the flexible band section 12 inward.

[075] The embodiment shown in Figs. 1A to 1D can also be fitted with a sealing washer, which is fixed and held in position inside the cover plate 4 by the locking projection 13. The embodiments shown in Figs. 2A to 2D and 3A to 3D are also fitted or can be fitted with a corresponding locking projection 13 or corresponding locking projections 13 in order to fix a sealing washer.

[076] The closure units 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 an unfolded position and is located axially below the remaining sections of the retaining ring 10. Before the closure unit 1 is applied to a container neck, the flexible band section 12 is folded inwards so that Petition 870250087304, dated 09 / 26 / 2025, page 38 / 58 28 / 32 can then engage with a tamper-evident ring on a container neck at a later point in time and thus connect the retaining ring 10 to the container neck. Folding is performed mechanically. The weakening sections 18 of the flexible band section 12 facilitate folding and thus reduce the risk of damage to the locking unit 1 during mechanical folding. In the embodiment shown in Figs. 1A to 1D, a total of ten equidistantly arranged weakening sections 18 are provided.

[077] It can also be seen in Fig. 1D that the lower limit of the recesses 8 coincides with an upper limit of the ring 14 that extends outwards. In the embodiment shown in Figs. 1A to 1D, the recesses 8 are elongated axially in such a way that the greatest possible material economy can be achieved in the manufacture of the closing unit 1.

[078] Figs. 2A to 2D show a second embodiment, which is configured identically to the first embodiment in Figs. 1A to 1D with respect to many characteristics. Therefore, only the differences from the first embodiment will be discussed below.

[079] In the embodiment shown in Figs. 2A to 2D, the recesses 8 extend to a lower limit, which is axially arranged above a lower limit of the first guide means 5. The cover skirt 3 thus has an area that extends axially below the first guide means 5 along the entire circumferential extent 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 cover skirt 3 in the circumferential regions defined by a recess 8 of the inner surface and an elevation 9 is greater in a reinforcing section 17 below the first guide means 5 than in an axially overlapping region in which the recess 8 extends. The closing unit 1 shown here thus additionally has a reinforcing section 17 whose wall thickness is, for example, 1 mm greater than in the area that lies above it in the axial direction and has the guide means 5 (internal thread). In Petition 870250087304, dated 09 / 26 / 2025, page 39 / 58 29 / 32 additional embodiments, the wall thickness of the reinforcing section 17 can be, for example, 0.8 mm to 1.5 mm greater than in the area above it in the axial direction. The elevations 9 extend, for example, along an axial length of 15 mm (in other embodiments, along an axial length of 10 mm to 20 mm). The combination of the recesses 8, elevations 9 and the reinforcing section 17 results in the highest possible strength of the closure unit 1 with, simultaneously, a comparatively low material cost and weight of the closure unit.

[080] The reinforcement section 17 shown here consists of segments spaced from each other in the circumferential direction, each of which extends axially below a recess 8 and in the circumferential direction by the circumferential extension of the respective recess 8. In other words, the elevations 9 extend axially further down than the recesses 8 situated inward for this purpose, as a result of which a segment of the reinforcement section 17 is configured below each recess 8.

[081] The embodiment shown in Figs. 2A to 2D also has a retaining ring 10 with a greater axial extension than the embodiment shown in Figs. 1A to 1D. Although the embodiment shown in Figs. 1A to 1D has a retaining ring 10 whose outer section extends over an axial height of 2 to 3 mm, the outer section of the retaining ring 10 shown in Figs. 2A to 2D extends over an axial height of 4 to 6 mm. Furthermore, compared with the embodiment shown in Figs. 1A to 1D, the embodiment shown in Figs. 2A to 2D has a clamping corrugation of the outer surface 6 of the cover skirt 3 in the regions of the outer surface situated between two elevations 9.

[082] Furthermore, the flexible band portion 12 of the guarantee ring of the modality shown in Figs. 2A to 2D has fewer weakening portions 18, five in total, than the modality shown in Figs. 1A to 1D.

[083] In the embodiment shown in Figs. 2A to 2D, the lid skirt 3 Petition 870250087304, dated 09 / 26 / 2025, pp. 40 / 58 30 / 32 also has a circumferential ring 14 with a clamping groove on its outer surface 6 below the axial region in which the first guide means 5 extends. The circumferential ring 14 projects radially just in opposition to the areas of the outer surface 6 of the cover skirt 3 that join the ring 14 axially above.

[084] The closing unit 1 also has a support ring 16, which extends circumferentially to the outer surface of the lid cover plate 4 and defines an upward-opening cylindrical cavity above the lid cover plate 4. With this support ring 16, the closing cap 1 can be fixed relative to the container neck after it has been lifted from a container for the first time – and a subsequent turning and placement of the closing cap 1 on the container neck. The closing unit 1 shown in Figs. 2A to 2D also has a cutting tooth within the cavity formed by the support ring, which is not visible in Figs. 2A to 2D. If the closing cap 1 is now fixed relative to the container neck as described above and the closing cap 1 is rotated about the closing 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 closes the pouring opening of a container neck in a liquid-tight manner.

[085] Figs. 3A to 3D show a third embodiment, which is configured identically to the first embodiment in Figs. 2A to 2D with respect to many characteristics. Therefore, only the differences from the second embodiment will be discussed below.

[086] In the closing unit shown in Figs. 3A to 3D, the first guide means 5 configured as an internal thread extends uninterruptedly along the inner surface 6 of the cover skirt 3. Particularly in Fig. 3D, it can be clearly observed that in each circumferential angle region comprising recesses, two recesses Petition 870250087304, dated 09 / 26 / 2025, pp. 41 / 58 31 / 32 axially surround an internal thread profile.

[087] Although the invention has been illustrated and described in detail in the drawings and description above, this illustration and description are for illustrative purposes only and are not intended to limit the scope of protection as defined by the claims. The invention is not limited to the embodiments disclosed.

[088] Variations of the disclosed embodiments will be evident to those skilled in the art from the attached drawings, description and claims. In the claims, the word “comprising” does not exclude other elements or steps, and the indefinite article “a” does not exclude a plurality. The mere fact that certain features are claimed in different claims does not preclude their combination. Reference signs in the claims are not intended to limit the scope of protection. List of Reference Symbols Closing unit Closing lid Lid skirt Lid cover plate First means of guide External surface a External surface section 6 Inner surface Recess Elevation Warranty ring Weakening lines / easily breakable webs Flexible strip section Locking projection Circumferential ring with clamping grooves Section with clamping grooves Petition 870250087304, dated 09 / 26 / 2025, pp. 42 / 58 32 / 32 101 102 103 Support ring Reinforcement section Weakening section Cover shaft Cutting plan Cutting plan Cutting plan Petition 870250087304, dated 09 / 26 / 2025, pp. 43 / 58

Claims

1 / 8 CLAIMS 1. Closing unit (1) for selectively closing or opening a pouring opening of a container, characterized in that the closing unit (1) comprises a closing cap (2), wherein the closing cap (2) has a cap cover plate (4) and a cap skirt (3) joining the cap cover plate (4) on the circumferential side, wherein the cap skirt (3) extends at least in cylindrical or conical sections around a cap axis (50), wherein the closing cap has a first guide means (5), wherein the first guide means (5) is configured and arranged so that it can be placed in 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 closing cap axis (50) and an inner surface (7) directed towards the closing cap axis (50),wherein the first guide means (5) is disposed on the inner surface (7) of the lid skirt (3), wherein according to a first possibility, the inner surface (7) of the lid skirt (3) has a plurality of recesses (8), wherein each of the recesses (8) extends planarly along a respective circumferential angle section and a respective axial section, wherein the radial distance from the inner surface (7) to the closing lid axis (50) is greater within a recess (8) than in those sections of the inner surface (6) that join directly to the respective recess (8) on both sides in the circumferential direction and / or according to a second possibility, the lid skirt (3) has a reinforcing section (17), Petition 870250087304, dated 26 / 09 / 2025, p. 44 / 58 2 / 8 wherein the wall thickness of the lid skirt (3) in at least one section plane, comprising the closing lid axis (50) and the reinforcement section (17),is greater in the reinforcing section (17) than the wall thickness of the lid skirt (3) in at least one wall section of the lid skirt (3) axially disposed between the reinforcing section (17) and the lid cover plate (4), wherein the reinforcing section (17) is axially disposed on the side of the first guide means (5) facing away from the lid cover plate (4) and / or at least partially at an axial height from the first guide means (5).

2. Closing unit (1), according to any of the preceding claims, characterized in that the closing unit (1) is configured at least according to the first possibility, wherein the outer surface (6) of the cover skirt (3) has a plurality of elevations (9), wherein each of the elevations (9) extends planarly along a respective circumferential angle section and a respective axial section, wherein the radial distance from the outer surface of the closing cover axis (50) is greater in the region of an elevation (9) than in the sections of the outer surface (6) that join directly to the respective elevation (9) on both sides in the circumferential direction.

3. Closing unit (1), according to any of the preceding claims, characterized in that the closing unit (1) is configured at least according to the first possibility, wherein at least one recess (8) of the inner surface (7) extends at least in sections within a surface section of the inner surface (7) defined by the circumferential angle section and the axial section of an elevation (9) of the outer surface (6), Petition 870250087304, dated 09 / 26 / 2025, p.45 / 58 3 / 8 wherein preferably several recesses (8) of the inner surface (7) extend, each at least in sections 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 (9) of the outer surface (6), wherein, in a particularly preferred manner, at least half of all recesses (8) of the inner surface (7) extend, each at least in sections within a respective surface section defined by the circumferential angle section and the axial section of a respective elevation (9) of the outer surface (6).

4. Closing unit, according to any of the preceding claims, characterized in that the closing unit (1) is configured 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), such that the at least one recess (8) separates two adjacent guide means segments of the first guide means (5) from each other as seen in the circumferential direction, wherein preferably the first guide means (5) is interrupted in the circumferential direction in the regions of several recesses (8) of the inner surface (7) in each case, such that the several recesses (8) separate two adjacent guide means segments from each other when seen in the circumferential direction.

5. Closing unit (1), according to any of the preceding claims, characterized in that the closing unit (1) is configured at least according to the first possibility, wherein the first guide means (5) extends in the circumferential direction through the region of at least one pair of axially adjacent recesses (8) of the inner surface (7), such that the first guide means (5) separates the recesses (8) of at least one pair from each other when viewed axially, wherein preferably the first guide means (5) extends circumferentially through the regions of a plurality of pairs of axially adjacent recesses (8) of the inner surface (7), such that the first guide means (5) separates each pair of recesses (8) of the plurality of pairs from each other when viewed axially.

6. Closing unit (1), according to any of the preceding claims, characterized in that the closing unit (1) is configured at least according to the first possibility, wherein the inner surface (7) of the lid skirt (3) has at least 4 recesses (8), wherein the inner surface (7) of the lid skirt (3) preferably has at least 7 recesses (8), wherein the inner surface (7) of the lid skirt (3) has, in a particularly preferred manner, at least 10 recesses (8).

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

8. Closing unit (1), according to any of the preceding claims, characterized in that the closing unit (1) is configured at least according to the first possibility, wherein several of the recesses (8) of the inner surface (7) and preferably all the recesses (8) of the inner surface (7) extend axially in the direction of the lid cover plate (4) exclusively up to an upper axial limit and not beyond, wherein the upper axial limit is axially at a maximum distance of 5 mm from the lid cover plate (4), wherein preferably the upper axial limit is at a maximum distance of 2 mm from the lid cover plate (4), wherein the upper axial limit is, in a particularly preferred manner, substantially identical to the axial position of the inner surface of the lid cover plate (4).

9. Closing unit (1), according to any of the preceding claims, characterized in that the closing unit (1) is configured at least according to the first possibility, wherein the lid skirt (3) comprises at least a first cylinder section and comprises a second cylinder section, wherein the second cylinder section is disposed on the side of the first cylinder section facing away from the lid cover plate (4), wherein the second cylinder section has an inner radius in a non-recessed area that is greater than the inner radius of the first cylinder section in a non-recessed area, wherein the first cylinder section has recesses (8) of the inner surface (7), wherein several of the recesses (8) and preferably all the recesses (8) of the inner surface (6) extend axially away from the lid 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, Petition 870250087304, dated 09 / 26 / 2025, page 48 / 58 6 / 8 according to a second alternative, the lower axial limit is axially spaced from the second distance and is thus disposed closer to the cover plate (4) than the second cylinder section., 10. Closing unit (1), according to any of the preceding claims, characterized in that the closing unit (1) is configured at least according to the first possibility, wherein at least half of the recesses (8) of the inner surface (7) extend, each, axially by at least 8 mm and at most 25 mm, preferably by at least 12 mm and at most 18 mm and / or extend in the circumferential direction in each case by a circumferential angle of at least 5 degrees and at most 20 degrees, preferably at least 8 degrees and at most 14 degrees.

11. Closing unit (1), according to any of the preceding claims, characterized in that the closing unit (1) is configured at least according to the second possibility, wherein the reinforcing section (17) extends in the circumferential direction as a complete ring by a circumferential angle of 360 degrees.

12. Closing unit (1), according to any of the preceding claims, characterized in that the closing unit (1) is configured at least according to the second possibility, wherein the reinforcing section (17) comprises ring segments, wherein the closing unit (1) has interruption sections, wherein the ring segments extend, each one, in the circumferential direction and are separated from each other by the interruption sections, wherein the interruption sections have a thinner wall thickness than the ring segments.

13. Closing unit (1), according to any of the preceding claims, characterized in that the closing unit (1) is configured according to the first and second possibility, wherein the cover skirt (3) has a first constant inner radius in at least one first section plane perpendicular to the closing cover axis (50), which intersects the reinforcement section (17), preferably all reinforcement sections (17), wherein the cover skirt (3) has a second inner radius outside the recesses (8) in at least one second section plane that is perpendicular to the closing cover axis and that intersects a recess (8), preferably all recesses (8), wherein the first inner radius is equal to the second inner radius or the first inner radius is greater than the second inner radius.

14. Closing unit (1), according to any of the preceding claims, characterized in that the closing unit (1) comprises a security band, preferably a security ring (10), wherein the security band is connected to the cover skirt (3) by at least one easily breakable connection (11), wherein the security band can be completely detached from the cover skirt (3) according to a first alternative or the security band according to a second alternative is connected to the cover skirt (3) by a connecting element such that the connecting element can withstand a tensile force of 12.5 newtons without the closing cover (2) detaching from the security band.

15. Combination of a container with a closing unit (1) as defined in any of the preceding claims characterized in that the container has a container opening, wherein the container comprises a second guide means, Petition 870250087304, dated 09 / 26 / 2025, pp. 50 / 58 8 / 8 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 fully expose the container opening. Petition 870250087304, dated 09 / 26 / 2025, pp. 51 / 58

Images