Closure cap for a container and associated packaging and / or dispensing device

Abstract

The closure cap (20) is provided for a container intended to contain a cosmetic product, the cap (20) comprising: - an outer covering skirt (24) extending about a central axis (A-A'), defining an outer surface (36), and an inner surface (34), - a closing wall (22) which at least partially closes the outer skirt (24) along the connecting edge (30), - a cylindrical inner skirt (26) extending about the central axis (A-A'), comprising a helical threading (46) projecting radially toward the central axis (A-A') from the inner face (42), and - a connection portion (28), radially joining the inner skirt (26) to the inner surface (34) of the outer skirt (24), the connection portion (28) having a helical shape.

Description

[0001] TITLE: Closure cap for a container and associated packaging and / or dispensing device

[0002] The present invention relates to a closure cap for a container intended to contain a cosmetic product comprising; an outer covering skirt extending about a central axis, defining an outer surface, radially away from the central axis, and an inner surface, radially opposite the outer surface extending between a connecting edge and a free edge, a closing wall which at least partially closes the outer skirt along the connecting edge, a cylindrical inner skirt extending about the central axis, having an inner face oriented toward the central axis and an outer face extending facing the inner surface of the outer covering skirt, the inner skirt comprising a helical threading projecting radially toward the central axis from the inner face, and a connection portion, radially joining the inner skirt to the inner surface of the outer skirt,

[0003] The cosmetic product is for example a hair product, a hygiene product, a facial and / or body care product, a makeup product, or a sun protection product.

[0004] More generally, a cosmetic product is a product as defined in EC Regulation No. 1223 / 2009 of the European Parliament and the Council of November 30, 2009, relating to cosmetic products.

[0005] In order to close a container containing a cosmetic product, it is known to provide the container with an external threading on which an internal threading disposed inside a cap is engaged. Such a cap typically includes an inner skirt receiving the internal threading and an outer covering skirt closed by a closing wall, which the user actuates in rotation in order to engage or disengage the threading of the cap and that of the container.

[0006] The provision of ecologically responsible, environmentally friendly solutions, the design and development of which account for environmental concerns is becoming a major concern to help meet global challenges.

[0007] It is therefore essential to design more sustainable products, thereby reducing the quantity of materials used.

[0008] In order to reduce the material required for manufacturing the caps, a hollow space can be provided between the two skirts, which are connected on the side of the closing wall. It is useful to increase the volume of this hollow space to make the manufacturing method more economical and environmentally friendly.

[0009] Such caps are often manufactured by injection molding of plastic material. In this case, the space between the two skirts is created by protuberances present in the mold. The threading of the inner skirt is particularly produced by a threaded core. The cap must therefore be disengaged from the threaded core after solidification.

[0010] A torque is then applied to the cap or / and to the core of the mold which is applied at the thread of the inner skirt. If the spacing between the two skirts is large or if the connection between the inner skirt and the cap is not rigid enough, this torque may prove to be sufficient to irreversibly deform the threading.

[0011] There is also a risk of irreversible deformation of the threading during use of the cap, when a screwing or unscrewing torque is applied to the cap by the user.

[0012] To remedy this problem, US6783014 discloses a cap comprising an inner skirt and an outer skirt, and also ribs located radially behind the inner skirt, which stiffens it. Thus, the cap can be disengaged without damaging the threading of the inner skirt.

[0013] However, such a solution is not entirely satisfactory, indeed the junction zone between the inner skirt, the rib and the closing wall is massive. Shrink marks are capable of forming when the cap cools, resulting in weakening of the cap. Furthermore, this harms its esthetic appearance.

[0014] Moreover, such a solution is not adapted to conically shaped caps which become thinner at the closing wall. Indeed, the protuberances intended to produce the spacing between the two skirts must then have an overly thin shape to ensure their durability.

[0015] Furthermore, the outer skirt is capable of bending and being deformed when a torque is applied to the cap, it is therefore also desirable to stiffen it.

[0016] Other embodiments of closure caps with reinforcing ribs are described in JP6884476 and JP4729156.

[0017] One aim of the invention is that of providing a closure cap for a container, the manufacture of which by injection is reliable and robust, the cap being economical and more environmentally friendly, while offering reliable operation during screwing or unscrewing and having a satisfactory esthetic appearance.

[0018] For this purpose, the invention relates to a closure cap of the aforementioned type, characterized in that the connection portion extends radially from the outer face of the inner skirt and has a helical shape.

[0019] In the closure cap according to the invention, the inner skirt and the outer skirt are robustly connected, minimizing the quantity of material required for this connection and avoiding the formation of massive zones capable of promoting the formation of shrink marks during the cooling of the constituent material of the cap following its manufacture by injection.

[0020] Indeed, the helical connection portion has a shape ensuring that the quantity of material used to connect the two skirts is just present along the thread, while providing a robust support against radial deformation of the thread. Thus, the quantity of material used to form the cap is minimized, reducing its cost and environmental impact, without harming its torsional torque resistance during use and ensuring a satisfactory esthetic appearance.

[0021] According to one variant, the connection portion extends facing the helical thread borne by the inner face of the inner skirt.

[0022] The connection portion thus positioned specifically stiffens the threading, thereby increasing the torque that can be applied to the closure cap, without risking triggering irreversible deformation, or even a fracture of the threading. The increase in rigidity of the threading is achieved by using the connection portion as a buttress between the outer skirt and the inner skirt, which limits the environmental impact and reduces material cost.

[0023] According to one variant, the connection portion has a height, measured along the central axis, less than or equal to the height, measured along the central axis, of the helical thread.

[0024] Thus, the quantity of material required for the embodiment of the connection portion is minimized, which makes it possible to further reduce the cost and environmental impact of the closure cap, without harming the robustness with respect to a torque applied during screwing or unscrewing.

[0025] According to one variant, the helical threading includes several threads.

[0026] The presence of several threads on the helical threading increases the ease for the user in engaging the cap on a corresponding thread by creating a plurality of given angular positions for which the thread can be engaged on the neck of the container.

[0027] This presence also makes it possible to increase, for a given number of revolutions, the travel of the cap compared to a threading with a single thread. Thus, the user can fully close a container by applying a limited rotation of the closure cap.

[0028] According to one variant, each thread has an angular extent about the central axis equal to that of the or each other thread, the threads defining a helical threading extending angularly over an angle of at least 200° and particularly greater than or equal to 360° about the axis.

[0029] In order to close the container, the user must align the start of a thread of the closure cap with the start of the threading of the container. They then rotate the closure cap relative to the container. When all the threads have the same angular extent, the angular distance that the user must cover in order to engage a thread of the closure cap on the container is reduced. This facilitates the use of the closure cap by a user.

[0030] The angular extent of the threading is at least 200° and particularly greater than 360° such that there is threading continuity in any angular position. Thus, the closing cap implements a thread having a sufficient angular extent engaging with the thread of the neck of the container to ensure the tightness of the container when the cap is in its mounted position on the container.

[0031] According to one variant, the connection portion includes, for each thread, a helical connection segment extending facing the thread.

[0032] Each thread thus has a good rigidity thanks to the reinforcement of each connection segment, which is achieved with a small quantity of material.

[0033] According to one variant, the helical threading comprises at least a first and a second thread segment located in angular overlap in an overlap zone about the central axis, the connection portion extending, in the overlap zone, facing the first thread segment without extending facing the second thread segment.

[0034] The absence of an angular overlapping connection portion in the overlap regions between the threads facilitates the manufacture of the part, in particular when it is cast, by avoiding or limiting the presence of undercut parts requiring complex mold movements.

[0035] According to one variant, the cap comprises at least one radial rib connecting the outer face of the inner skirt to the inner surface of the outer skirt, axially away from the connection portion along the central axis.

[0036] The radial rib improves the rigidity of the two skirts. It particularly prevents deformation of the outer skirt when the user applies pressure on it in order to exert a cap engagement or disengagement torque.

[0037] According to one variant, the cap comprises several radial ribs connecting the outer face of the inner skirt to the inner surface of the outer skirt, axially away from the connection portion along the central axis, the radial ribs being distributed angularly about the central axis.

[0038] The plurality of ribs improves the rigidity of the inner skirt and the outer skirt. In particular, the angular distribution prevents geometrical defects from occurring in certain angular positions and ensures optimal force distribution.

[0039] According to one variant, the inner skirt has an edge connected to the outer skirt and a free edge, the connection portion extending between the connected edge and the free edge.

[0040] The presence of a free edge of the inner skirt defines a space between the inner skirt and the outer skirt, this space contributing to the reduction of material used. According to one variant, the connected edge has a helical shape, the free edge extending in a plane perpendicular to the central axis.

[0041] The helical shape of the connected edge of the inner skirt ensures a reduction in the quantity of material used to produce the inner skirt compared to a connected edge extending in a plane parallel to the free edge.

[0042] According to one variant, the cap comprises at least one relief for locking a seal projecting radially toward the central axis from the inner surface of the outer skirt, axially between the inner skirt and the closing wall.

[0043] The locking relief ensures the positioning of a seal which closes the container hermetically. Thus, the seal prevents leaks of cosmetic product contained in the container and protects the cosmetic product from contamination by external elements, such as moisture contained in the air.

[0044] According to one variant, the outer skirt has a non-cylindrical shape, in particular a truncated cone shape at the closing wall.

[0045] As the outer skirt is a covering skirt, its shape defines the esthetics of the closure cap. A non-cylindrical shape may be preferred, in order to differentiate the product or to adapt to the shape of the container.

[0046] According to one variant, the outer skirt, the inner skirt, the closing wall and the connection portion are made of one piece as they are integral.

[0047] The closure cap is therefore made of one piece, thus avoiding operations for assembling different elements. The closure cap is more economical and quicker to manufacture.

[0048] The invention also relates to a cosmetic product packaging or / and dispensing device comprising:

[0049] - a container defining a cosmetic product storage volume, the container comprising a neck provided with a helical outer threading, the cosmetic product storage volume opening through the neck,

[0050] - a cap as defined above, mounted on the neck by engaging the helical threading of the inner skirt with the external threading of the neck.

[0051] The invention will appear more clearly upon reading the following description, given solely as a non-limiting example, and made with reference to the appended drawings, wherein:

[0052] - [Fig. 1] Figure 1 is a schematic perspective view of a first cosmetic product packaging device according to the invention;

[0053] - [Fig. 2] Figure 2 is a sectional view along a median axial plane of the closure cap of the device shown in Figure 1; - [Fig. 3] Figure 3 is a perspective bottom view of the cap shown in Figure 2;

[0054] - [Fig. 4] Figure 4 is a sectional view, similar to Figure 2, of a closure cap of a second cosmetic product packaging device according to the invention.

[0055] A first cosmetic product packaging device 10 according to the invention is illustrated in Figure 1.

[0056] The cosmetic product intended to be packaged in the device 10 is for example a hair product, a hygiene product, a facial and / or body care product, a makeup product, or a sun protection product.

[0057] The device 10 comprises a container 12, containing the cosmetic product and a cap 20 according to the invention mounted on the container 12 to close it.

[0058] The container 12 is for example be a bottle or a jar. It comprises a bottom 14 and a side wall 16 which extends about a central axis A-A’. It defines a storage volume 18 receiving the cosmetic product.

[0059] The container 12 also defines an access opening to the storage volume 18, opposite the bottom 14 and advantageously located in a plane perpendicular to the central axis A- A’, through which the storage volume 18 opens.

[0060] Hereinafter, the terms “external” and “internal” are generally understood with reference to the geometric center of the storage volume 18. Furthermore, the terms “radial” and “axial” are understood with reference to the central axis A-A’.

[0061] The container 12 comprises a neck (not seen) provided with an external helical threading (not shown) projecting radially outward while being advantageously integral with the neck. The neck defines the access opening internally.

[0062] The cap 20 is intended to selectively close the access opening by engaging on the outer helical threading of the neck of the container 12, in a mounted position on the container 12.

[0063] The cap 20 has a closing wall 22 extending substantially in a plane perpendicular to the central axis A-A’ in the mounted position.

[0064] With reference to Figure 2, the cap 20 comprises an outer skirt 24 which projects from the closing wall 22 toward the bottom 14 when the cap 20 is in its mounted position on the container 12, an inner skirt 26, comprising a helical threading 46, which extends about the central axis A-A’ and a connection portion 28 connecting the inner skirt 26 to the outer skirt 24.

[0065] The cap 20 further comprises at least one radial reinforcement rib 52 connecting the inner skirt 26 to the outer skirt 24 under the connection portion 28, opposite the closing wall 22. The closing wall 22 is intended to axially close the container 12. In its mounted position on the container 12, it extends facing the bottom 14 of the container 12.

[0066] In the example shown in Figure 1, the closing wall 22 comprises, on the side opposite the bottom 14, a planar surface. Advantageously, the closing wall 22 comprises a fillet 23 on its periphery. The fillet 23 is intended to improve comfort of use of the cap 20 by avoiding the formation of a protruding edge which could be unpleasant for a user.

[0067] Alternatively (not shown), the closing wall 22 includes a decorative element, for example a logo or a distinguishing sign, particularly produced by material removal.

[0068] The outer skirt 24 extends about the central axis A-A’ between a connecting edge 30 to the closing wall 22 and a free edge 32. It projects here from the periphery of the closing wall 22 toward the container 12, when the cap 20 is in its mounted position on the container 12.

[0069] The connecting edge 30 is closed tightly by the closing wall 22, as seen in Figure 2. Alternatively, the connecting edge 30 of the outer skirt 24 is partially closed by the closing wall 22.

[0070] The outer skirt 24 has an inner surface 34 and an outer surface 36. Its thickness is defined as the radial distance between the inner surface 34 and the outer surface 36.

[0071] Preferably, the thickness of the outer skirt 24 and the thickness of the closing wall 22 are substantially equal. This prevents the formation of defects, such as shrink marks, due to substantial thickness variations when manufacturing the part and ensures a uniform visual rendering.

[0072] In this example, the outer skirt 24 has a truncated cone shape at the closing wall 22. The diameter of the outer skirt 24 at the free edge 32 is greater than the diameter of the outer skirt 24 at the connecting edge 30.

[0073] With reference to Figure 2, the outer skirt 24 here comprises, on its inner surface 34, an annular relief 38 and spacers 40 for stiffening the relief 38.

[0074] The relief 38 extends radially toward the central axis A-A’ while being substantially within a radial plane relative to the central axis A-A’. The relief 38 is located between the closing wall 22 and the inner skirt 26. It forms a stop for locking a substantially planar seal (not shown), adapted to be housed between the closing wall 22 and the relief 38.

[0075] The presence of a seal in the cap 20 hermetically closes the container 12, in particular when the latter receives a cosmetic product with a low viscosity.

[0076] The spacers 40 extend radially from the inner surface 34 of the outer skirt 24. They extend axially over the entire height between the closing wall 22 and the relief 38. The spacers 40 are uniformly distributed about the central axis A-A’, so as to stiffen the relief 38. Advantageously, the outer surface 36 of the outer skirt 24 is a textured surface, for example a surface which has grooves intended to improve grip by a user during engagement or disengagement of the cap 20 on the container 12.

[0077] The inner skirt 26 extends inside the outer skirt 24 about the central axis A-A’. It has a substantially cylindrical shape and comprises an inner face 42, provided with the helical threading 46, and also an outer face 44 facing the outer skirt 24.

[0078] As illustrated in Figure 2, the inner skirt 26 has a free edge 27, which extends in a plane perpendicular to the central axis A-A’ and a connected edge 29 to the outer skirt 24, having a helical shape of central axis A-A’ and pitch P. The connected edge 29 is here connected to the inner surface 34 of the outer skirt 24 via the connection portion 28.

[0079] The helical threading 46 projects radially toward the central axis A-A’ from the inner face 42 of the inner skirt 26. It has a complementary shape with the external helical threading (not shown) present on the neck of the container 12.

[0080] The helical threading 46 includes at least one thread 48A, 48B, preferably several separate threads 48A, 48B and here, two separate threads 48A and 48B. Each thread 48A, 48B, has a helical shape of central axis A-A’ and pitch P.

[0081] The threads 48A, 48B both have, in cross-section in a median axial plane, a trapezoidal profile. Alternatively, each thread 48A, 48B of the helical threading 46 has a different profile from a trapezoidal profile, for example a round profile.

[0082] The threads 48A, 48B have the same angular extent and the same height, measured along the central axis A-A’. The sum of the angular extents of each thread 48A, 48B is greater than 360°, as seen in Figure 3.

[0083] This ensures that there is no angular discontinuity in the helical threading 46. There is therefore at least one overlap zone 50 wherein two thread segments belonging to the threads 48A and 48B overlap angularly.

[0084] The outer face 44 of the inner skirt 26 is radially connected to the inner surface 34 of the outer skirt 24 by the helical-shaped connection portion 28 of central axis A-A’ and pitch P identical to that of the thread 48A, 48B.

[0085] This connection portion 28 extends between the connected edge 29 and the free edge 27 of the inner skirt 26. The connection portion 28 extends here from the connected edge 29.

[0086] As shown in Figure 2, the connection portion 28 has a helical shape which extends radially from the outer face 44 of the inner skirt 26 facing the helical threading 46.

[0087] More specifically, the connection portion 28 extends facing each of the threads 48A, 48B of the helical threading 46. It therefore includes for each thread 48A, 48B, a helical connection segment 31 A, 31 B extending respectively facing the thread 48A, 48B opposite the thread 48A, 48B, relative to the inner skirt 26.

[0088] This arrangement of the connection portion 28 ensures radial reinforcement of the helical threading 46 which increases the torque that can be applied to it, while minimizing the quantity of material required for its manufacture and preventing the formation of defects, such as shrink marks during the manufacture of the cap.

[0089] In the overlap zones 50, the connection portion 28 only extends facing either of the segments of the threads 48A and 48B which overlap angularly, in order to prevent the formation of undercut parts. This facilitates the manufacture of the cap 20 by molding, particularly by plastic injection.

[0090] The inner skirt 26 has, in each overlap zone 50, an inner slope 51A connecting one of the threads 48A, 48B to the other thread.

[0091] The connection portion 28 also has, in each overlap zone 50, an outer slope 51 B which connects the helical connection segments 31 A, 31 B to each other, which ensures the continuity of the connection portion 28.

[0092] The height of the connection portion 28, measured along the central axis A-A’ is less than or equal to the height of the helical threading 46, preferably less than or equal to the height of each thread 48A, 48B, measured along the central axis A-A’.

[0093] As illustrated in Figure 2, the height of each segment 31 A, 31 B facing a thread 48A, 48B is equal to the height of the thread 48A, 48B.

[0094] In this example, the cap 20 includes several radial ribs 52. The radial ribs 52 connect the outer face 44 of the inner skirt 26 to the inner surface 34 of the outer skirt 24 and are located axially away from the connection portion 28.

[0095] The radial ribs 52 extend axially from the free edge 27 to the connected edge 29 integral with the inner skirt 24 and / or with the outer skirt 26.

[0096] As can be seen in Figure 3, the radial ribs 52 are distributed angularly about the central axis A-A’, in order to ensure a homogeneous distribution of the forces between the outer skirt 26 and the inner skirt 24 during engagement or disengagement of the cap 20 on the container 12.

[0097] In operation, during the first mounting of the cap 20 on the neck, or during a subsequent disassembly / reassembly, a user or a robot engages each thread 48A, 48B of the helical threading 46 on the outer helical threading of the neck.

[0098] A rotational drive torque of the cap 20 about the central axis A-A’ is then applied, to screw / unscrew the cap 20 on the neck by cooperation between each thread 48A, 48B of the helical threading 46 and the outer helical threading of the neck. A segment 31 A, 31 B of the connection portion 50 being located just facing each thread 48A, 48B, the inner skirt 28 is held firmly in radial position thanks to the reinforcement provided by the connection portion 28 acting as a buttress between the inner skirt 26 and the outer skirt 24.

[0099] The cap 20 nevertheless remains light because the connection portion 50 only extends facing each thread 48A, 48B. There are empty spaces between the inner skirt 26 and the outer skirt 28 away from the connection portion 50.

[0100] Advantageously, the outer skirt 24, the inner skirt 26, the closing wall 22 and the connection portion 28 are made of one piece and integral. For example, the cap 20 is produced by plastic injection. The cost of manufacturing a cap 20 is therefore minimized because its manufacture does not require an assembly step.

[0101] Figure 4 illustrates a cap 20 including a helical threading 46 comprising a single thread 48 and a helical connection portion 28 extending facing the thread 48.

[0102] The angular extent of the thread 48 is greater than 360° and defines an angular overlap zone 50 of successive segments of the thread 48. As above, in the overlap zone 50, the inner skirt 26 comprises an inner slope 51A connecting the successive segments of the thread 48. The connection portion 28 only extends facing either of the segments of the thread 48 which overlap angularly. The connection portion 28 also has, in each overlap zone 50, an outer slope 51 B which connects the segments of the connection portion 28 to each other without overlapping.

[0103] In one embodiment (not shown), the device 10 is a cosmetic product packaging and dispensing device.

[0104] The cap 20 is then provided with a dispensing system, for example a pump or a service cap for conveying a cosmetic product contained in the storage volume 18 of the container out of the device 10. For this purpose, the cap 20 has an opening, provided in the closing wall 22 to accommodate or delimit the dispensing system.

[0105] For example, the dispensing system is a pump which, by pressing a push button, conveys the cosmetic product from the container 10 to an outlet nozzle by means of a tube integral with the dispensing system, the tube passing through the opening provided in the cap 20. The outlet nozzle is located outside the closing wall 22 in order to allow the use of the cosmetic product by a user.

[0106] In any case, the cap 20 according to the invention makes it possible to close a container 12 effectively, thanks to its robust structure, while minimizing manufacturing costs and its environmental impact and ensuring satisfactory comfort, esthetic appearance and ease of use.

Claims

CLAIMS1. A closure cap (20) for a container (12) intended to contain a cosmetic product comprising: an outer covering skirt (24) extending about a central axis (A-A’), defining an outer surface (36), radially away from the central axis (A-A’), and an inner surface (34), radially opposite the outer surface extending between a connecting edge (30) and a free edge (32), a closing wall (22) which at least partially closes the outer skirt (24) along the connecting edge (30), a cylindrical inner skirt (26) extending about the central axis (A-A’), having an inner face (42) oriented toward the central axis (A-A’) and an outer face (44) extending facing the inner surface (34) of the outer covering skirt (24), the inner skirt (26) comprising a helical threading (46) projecting radially toward the central axis (A-A’) from the inner face (42), and a connection portion (28), radially joining the inner skirt (26) to the inner surface (34) of the outer skirt (24), characterized in that the connection portion (28) extends radially from the outer face (44) of the inner skirt (26) and has a helical shape.

2. The cap (20) according to claim 1, wherein the connection portion (28) extends facing the helical threading (46) borne by the inner face (42) of the inner skirt (26).

3. The cap (20) according to one of claims 1 or 2, wherein the connection portion (28) has a height, measured along the central axis (A-A’), less than or equal to the height, measured along the central axis (A-A’), of the helical threading (46).

4. The cap (20) according to any one of the preceding claims, wherein the helical threading (46) includes several threads (48).

5. The cap (20) according to claim 4, wherein each thread (48) has an angular extent about the central axis (A-A’) equal to that of the or each other thread (48), the threads (48) defining a helical threading (46) extending angularly over an angle of at least 200° and particularly greater than or equal to 360° about the axis (A-A’).

6. The cap (20) according to claim 4 or 5, wherein the connection portion (28) includes for each thread (48), a helical connection segment (31) extending facing the thread (48).

7. The cap (20) according to any one of claims 4 to 6, wherein the helical threading (46) comprises at least a first and a second thread segment located in angular overlap in an overlap zone (50) about the central axis (A-A’), the connection portion (28) extending, in the overlap zone (50), facing the first thread segment without extending facing the second thread segment.

8. The cap (20) according to any one of the preceding claims, comprising at least one radial rib (52) connecting the outer face (44) of the inner skirt (26) to the inner surface (34) of the outer skirt (24), axially away from the connection portion (28) along the central axis (A-A’).

9. The cap (20) according to claim 8, comprising several radial ribs (52) connecting the outer face (44) of the inner skirt (26) to the inner surface (34) of the outer skirt (24), axially away from the connection portion (28) along the central axis (A-A’), the radial ribs (52) being distributed angularly about the central axis (A-A’).

10. The cap (20) according to one of the preceding claims, wherein the inner skirt (26) has a connected edge (29) connected to the outer skirt and a free edge (27), the connection portion (28) extending between the connected edge (29) and the free edge (27).

11. The cap (20) according to claim 10, wherein the connected edge (29) has a helical shape, the free edge (27) extending in a plane perpendicular to the central axis (A- A’).

12. The cap (20) according to any one of the preceding claims, comprising at least one relief (38) for locking a seal projecting radially toward the central axis (A-A’) from the inner surface (34) of the outer skirt (24), axially between the inner skirt (26) and the closing wall (22).

13. The cap (20) according to any one of the preceding claims, wherein the outer skirt (24) has a non-cylindrical shape, in particular a truncated cone shape at the closing wall (22).

14. The cap (20) according to any one of the preceding claims, wherein the outer skirt (24), the inner skirt (26), the closing wall (22) and the connection portion (28) are made of one piece as they are integral.

15. A cosmetic product packaging or / and dispensing device (10), comprising: - a container (12) defining a cosmetic product storage volume (18), the container (12) comprising a neck provided with a helical outer threading, the cosmetic product storage volume (18) opening through the neck,- a cap (20) according to any one of the preceding claims, mounted on the neck by engaging the helical threading (46) of the inner skirt (26) with the helical outer threading of the neck.

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