CLOSURE CAP FOR CLOSING A CONTAINER

Abstract

A closure cap for closing the pouring opening of a container has a cylindrical threaded part with an open rim and an inner thread which can co-operate with an outer thread of a container neck of the container, a security ring which is designed to be held on a projection formed on the container neck, a plurality of security webs which releasably connect the security ring with the open rim, and a first retaining strip having a first and a second end, the first end being securely connected to the open rim of the threaded part and the second end being securely connected to the security ring. The closure cap comprises a second retaining strip having a third and a fourth end, the third end being securely connected to the open rim of the threaded part and the fourth end being securely connected to the security ring

Claims

1. Closure cap for closing the pouring opening of a container, comprising: a cylindrical threaded part having an open rim and an inner thread configured to coordinate with an outer thread of a container neck of the container, a security ring configured to be held on a projection formed on the container neck, a plurality of security webs releasably connecting the security ring to the open rim, and a first retaining strip having a first and a second end and a first and a second rim, wherein the first end is securely connected to the open rim of the threaded part, the second end is securely connected to the security ring, the first rim is releasably connected to the open rim of the threaded part by at least one, first, predetermined breaking web, and the second rim is releasably connected to the security ring by at least one, second, predetermined breaking web, and a second retaining strip having a third and a fourth end and a third and fourth rim, wherein the third end is securely connected to the open rim of the threaded part, the fourth end is securely connected to the security ring, the third rim is releasably connected to the open rim of the threaded part by at least one, third, predetermined breaking web, and the fourth rim is releasably connected to the security ring by at least one, fourth, predetermined breaking web, wherein the first and the third ends enclose a first opening angle of at least 110 degrees and at most 140 degrees, with respect to the center point of the closure cap as apex, and the second and the fourth ends enclose a second opening angle of at least 110 degrees and at most 135 degrees with respect to a center point of the closure cap as apex.

2. Closure cap according to claim 1, wherein the first and second ends enclose a third opening angle of at least 40 degrees and at most 70 degrees with respect to the center point of the closure cap as apex.

3. Closure cap according to claim 1, wherein the third and the fourth ends enclose a fourth opening angle of at least 40 degrees and at most 70 degrees with respect to the center point of the closure cap as apex.

4. Closure cap according to claim 3, wherein the third and the fourth opening angles are of equal size, as a result of which the first and the second retaining strips are of equal length.

5. Closure cap according to claim 1, wherein a cross-section of the first and second retaining strips is constant along a length of the first or second retaining strip.

6. Closure cap according to claim 1, wherein a first or a second narrowing of thc a cross-section of the first or the second retaining strip is provided at the second or the fourth end, as a result of which the second or the fourth end can act as an articulation.

7. Closure cap according to claim 1, wherein the plurality of security webs arranged at uniform intervals along the open rim.

8. Closure cap according to claim 1, wherein the first, second, third, and fourth predetermined breaking webs are arranged at uniform intervals along the first and second or the third and fourth rims.

9. Closure cap according to claim 1, wherein a position of the security ring in relation to the projection of the container neck can be varied in an axial direction and in a circumferential direction.

10. Closure cap according to claim 1, wherein a rim of the security ring defines a first recess and a second recess each facing and configured to accommodate a respective one of the first and second retaining strips.

11. Closure cap according to claim 1, wherein the first and/or the second ends of the first retaining strip and the third and/or the fourth ends of the second retaining strip are configured to be bendable along predefined bending lines.

12. Closure cap according to claim 1, further comprising an inward-protruding inner cone, e.g., in the form of a sealing cylinder or a sealing ring, is formed on a bottom of the threaded part and is configured to coordinate in a sealing manner with an inner wall of the container neck in a closed position.

13. Closure cap according to claim 1, wherein the first and second retaining strips each have a width between 3 mm and 7 mm.

14. Closure cap according to claim 1, wherein the closure cap is designed configured to coordinate with a standardized container neck having an outer thread and an annular projection.

15. Closure cap according to claim 1, wherein the closure cap is made of a plastic material.

16. Closure cap according to claim 1, wherein the threaded part, the security ring, the first and second retaining strips, the plurality of security webs, and the at least first, second, third, and fourth predetermined breaking webs are formed in one piece.

17. Closure cap according to claim 1, wherein the security ring defines a plurality of slots each having an upper edge and a lower edge and arranged to be distributed over a circumference, wherein the upper edge is formed by a circular-arc-shaped section of the security ring, and the lower edge is formed by a wall section inclined inwards in a radial direction, and the lower edges of the plurality of slots forms a plurality of projections configured to engage in a form-fitting manner with the projection.

18. Container, comprising: a container body, a container neck adjoining the container body, an outer thread formed on the container neck, and a closure cap for closing a pouring opening provided within the container neck, the closure cap having a cylindrical threaded part having an open rim and an inner thread configured to coordinate with an outer thread of a container neck of the container, a security ring configured to be held on a projection formed on the container neck, a plurality of security webs releasably connecting the security ring to the open rim, a first retaining strip having a first and a second end and a first and a second rim, wherein the first end is securely connected to the open rim of the threaded part, the second end is securely connected to the security ring, the first rim is releasably connected to the open rim of the threaded part by at least one, first, predetermined breaking web, and the second rim is releasably connected to the security ring by at least one, second, predetermined breaking web, a second retaining strip having a third and a fourth end and a third and fourth rim, wherein the third end is securely connected to the open rim of the threaded part, the fourth end is securely connected to the security ring, the third rim is releasably connected to the open rim of the threaded part by at least one, third, predetermined breaking web, and the fourth rim is releasably connected to the security ring by at least one, fourth, predetermined breaking web, wherein, the first and the third ends enclose a first opening angle of at least 110 degrees and at most 140 degrees, with respect to the center point of the closure cap as apex, and the second and the fourth ends enclose a second opening angle of at least 110 degrees and at most 135 degrees with respect to a center point of the closure cap as apex.

19. Container according to claim 18, further comprising a shoulder on the container neck, the shoulder formed below the security ring or formed by the security ring, and the respective lengths of the first and second retaining strips being such that the threaded part can be lifted out of a closing position after unscrewing from the container neck and can be positioned below the shoulder in an open position, wherein the threaded part is held in the open position on the first and second retaining strips, rests at least partially with the open rim on the container body, and rests against the shoulder.

20. Container according to claim 19, wherein the shoulder is a support ring that is formed at a transition from the container neck to the container body.

21. Container according to claim 20, further comprising at least one, first depression in a radial direction on the support ring, as a result of which a first holding side having a first corner and a second holding side having a second corner are formed on the support ring, wherein the first and second corners are present at the transition from the first and second holding sides to the open rim of the support ring.

22. Container according to claim 21, further comprising a plurality of second depressions on the support ring, the plurality of second depressions together with the first and second retaining strips are arranged symmetrically with respect to a plane of symmetry, wherein the plane of symmetry runs through an axis of rotation of the threaded part.

23. Container according to claim 22, wherein the plurality of second depressions are each hook-shaped.

24. Container according to claim 18, wherein a respective length of the first and second retaining strips is dimensioned in such a way that the threaded part can be lifted out of a closing position after unscrewing from the container neck and can be positioned next to the container neck in an open position, and is held in the open position on the first and second retaining strips.

25. Container according to claim 18, wherein the first and second retaining strips are elastically tensioned in an open position of the threaded part, as a result of which the threaded part is pulled onto the container neck or the shoulder in the open position.

26. Container according to claim 25, wherein an axis of rotation of the threaded part and an axis of rotation of the container neck are substantially parallel in the open position of the threaded part.

27. Container according to claim 24, wherein the length of the first and second retaining strips is dimensioned in such a way that an axial orientation of the threaded part in the open position and in the closing position is substantially identical.

28. Container according to claim 18, wherein the closure cap is configured to be pressed onto the bottle neck.

Description

BRIEF DESCRIPTIONS OF THE DRAWINGS

[0037] Further advantages and features become apparent from the following description of several exemplary embodiments of the invention, with reference to the schematic drawings. Shown, in a representation not true to scale, are:

[0038] FIG. 1: an isometric view of a closure cap obliquely from below in a first embodiment;

[0039] FIG. 2: a side view of the closure cap of FIG. 1;

[0040] FIG. 3: a side view of the closure cap in a second embodiment;

[0041] FIG. 4: a side view of the closure cap, wherein the closure cap is unscrewed from a container neck;

[0042] FIG. 5: a side view of the closure cap, wherein the closure cap is in an open position and is arranged next to the container neck, and the closure cap is designed in accordance with the second embodiment;

[0043] FIG. 6: a plan view of the closure cap of FIG. 5;

[0044] FIG. 7: an isometric view of the closure cap of FIG. 5;

[0045] FIG. 8: a side view of the closure cap, wherein the closure cap is in an open position and is arranged below the container neck, and the closure cap is designed in accordance with the second embodiment;

[0046] FIG. 9: a plan view of the closure cap of FIG. 8;

[0047] FIG. 10: an isometric view of the closure cap of FIG. 8;

[0048] FIG. 11: an isometric view of a closure cap and of the container in a further embodiment;

[0049] FIG. 12: a plan view of the embodiment of FIG. 11;

[0050] FIG. 13: an isometric view of a closure cap and of the container in a further embodiment;

[0051] FIG. 14: a plan view of the embodiment of FIG. 13;

[0052] FIG. 15: a detailed view of the security ring in a further embodiment; and

[0053] FIG. 16: a sectional view of the security ring of FIG. 15 with visualized inclination angles.

DETAILED DESCRIPTION OF THE INVENTION

[0054] FIGS. 1 through 10 show a closure cap, which is denoted as a whole by reference sign 11. The closure cap 11 is captively held on a container 13—in particular, on a bottle 13. The container 13 is indicated in FIGS. 4 through 10. The closure cap 11 comprises a cylindrical threaded part 15, a security ring 17, and a first and a second retaining strip 19a, 19b.

[0055] The threaded part 15 comprises a bottom 21 and a first cylindrical shell 23 having an open rim 25. An inner thread 27 is formed on the inside of the shell 23. The container 13 comprises a container body 28 and a container neck 29 adjoining the container body 28. The container neck 29 is designed as a second cylindrical shell. An outer thread 31 is formed on the container neck 29 and coordinates with the inner thread 27. As a result, the threaded part 15 can be screwed onto and off the container neck 29. The closure cap 11 closes the pouring opening 33, which is provided within the container neck 29.

[0056] The security ring 17 is held in a form fit on the container neck 13. For this purpose, an annular projection 35 is formed on the outside of the container neck 29 and can be engaged from below by projections 37 formed on the inside of the security ring 17. The security ring 17 is rotatable in relation to the container neck 29.

[0057] The first retaining strip 19a has a first end 39 and a second end 41. The first end 39 is securely connected to the open rim 25. The second end 41 is securely connected to the security ring 17. As a result, the closure cap 11 is captively held on the container 13. Furthermore, the first retaining strip 19 has a first rim 43 and a second rim 45. The first rim 43 is connected to the open rim 25 by at least one, first, predetermined breaking web 47, and the second rim 45 is releasably connected to the security ring 17 by at least one, second, predetermined breaking web 49.

[0058] The second retaining strip 19b has a third end 51 and a fourth end 53. The third end 51 is securely connected to the open rim 25. The fourth end 53 is securely connected to the security ring 17. As a result, the closure cap 11 is additionally captively held on the container 13. Furthermore, the second retaining strip 19b has a third rim 55 and a fourth rim 57. The third rim 55 is connected to the open rim 25 by at least one, third, predetermined breaking web 59, and the second rim 45 is releasably connected to the security ring 17 by at least one, fourth, predetermined breaking web 61.

[0059] In addition, the security ring 17 is held at the open rim 25 by a plurality of security webs 63. The security webs are arranged at uniform intervals on the security ring 17. It goes without saying that the regions occupied by the first and second retaining strips 19a, 19b on the security ring 17 are free of security webs 63.

[0060] The first and second retaining strips 19a, 19b have a width between 4 mm and 5 mm so that they are sufficiently stable.

[0061] Since the closure cap 11 is rotationally symmetrical, it has a center point 65. The center point 65 lies in the imaginary plane between the open rim 25 and the security ring 17. The first end 39 and the third end 51 enclose a first opening angle 67 of at least 110 degrees and at most 170 degrees, or at least 117 and at most 135 degrees, with respect to the center point 65 as apex. The second end 41 and the fourth end 53 enclose a second opening angle 69 of at least 110 degrees and at most 170 degrees, or at least 117 and at most 135 degrees, with respect to the center point 65 as apex.

[0062] The first end 39 and the second end 43 enclose a third opening angle 71 of at least 40 degrees and at most 70 degrees, or at least 45 and at most 63 degrees, with respect to the center point of the closure cap as apex. The third end 51 and the fourth end 53 enclose a fourth opening angle 73 of at least 40 degrees and at most 70 degrees, or at least 45 and at most 63 degrees, with respect to the center point 65 as apex. It goes without saying that the sum of the first, second, third, and fourth opening angles 67, 69, 71, 73 must be 360 degrees. By selecting the first, second, third, and fourth opening angles, it is possible for the first and second retaining strips 19a, 19b to have a specific length, which enables the functions of the closure cap described below.

[0063] Expediently, the third and fourth opening angles 71, 73 are of equal size, which is equivalent to the first and second retaining strips 19a, 19b being of equal length. The first and second retaining strips 19a, 19b are carved out of the security ring 17 at an offset of 180 degrees.

[0064] According to the embodiment of FIGS. 1 and 2, a first or a second narrowing 75, 77 of the cross-section of the first or the second retaining strip 19a, 19b is provided at the second or the fourth end 41, 53. The second or the fourth end 41, 53 can act as an articulation as a result of the first and second narrowings 75, 77.

[0065] In the embodiment according to FIGS. 3 and 5 through 7, the cross-section of the first and second retaining strips (19a, 19b) is constant along the length of the first or second retaining strip (19a, 19b). As a result, the first and second retaining strips (19a, 19b) can be constantly stretched.

[0066] A first and a second recess 79, 81 are provided on the security ring 17. The first and the second retaining strips 19a, 19b are accommodated in the first or the second recess 79, 81. This makes it possible to machine the first and second retaining strips 19a, 19b directly out of the security ring 17—for example, by cutting out of the security ring.

[0067] If the closure cap 11 is pressed onto the container neck 29, the pouring opening 33 is closed by the closure cap 11, and the closure cap 11 is in a closing position. When the threaded part 15 is unscrewed from the container neck 29, the first, second, third, and fourth predetermined breaking webs 47, 49, 59, 61 and the security webs 63 break. The security ring 17 rotates along with the threaded part 15. During unscrewing, the first and second retaining strips 19a, 19b can straighten. The second and fourth ends 41, 53 act as an articulation as a result of the first and second narrowings 75, 77. The first and third ends 39, 51 can also be bent, e.g., bent outwards, because the translational movement of the threaded part 15 is thereby simplified and can take place in a more defined manner.

[0068] By selecting the third and fourth opening angles 71, 73, the first and second retaining strips 19a, 19b have a length which enables the threaded part 15 to be moved further after unscrewing from the container neck 29. If the container 13 is perpendicular, the threaded part 15 can first be moved linearly in the horizontal direction in the direction of the first and third ends 41, 53. When the pouring opening 33 is completely released from the threaded part 15, the threaded part 15 can be moved linearly along the container neck 29 in parallel to the axis of rotation 83 of the container neck 29. The length of the first and second retaining strips 19a, 19b and the optional articulation function of the first and third ends 41, 53 are adapted in such a way that the threaded part 15 is held on the container neck 29 in an open position (FIGS. 5 through 7). The axis of rotation 83 of the container neck and the axis of rotation 85 of the threaded part 15 are oriented to be substantially in parallel in the open position. In the open position, the threaded part 15 is captively held on the container 13 and is affixed to the container neck 29 in such a way that it does not protrude into the pouring opening 33 when liquid is poured out of the container 13. The first and second retaining strips 19a, 19b enable the threaded part 15 to be transferred, after being unscrewed from the container neck 29, in a forcibly-guided translational movement into the open position. Due to the forced guidance, only one open position exists, and not several. The length and cross-section of the first or the second retaining strip 19a, 19b are dimensioned in such a way that the first and second retaining strips 19a, 19b are elastically tensioned in the open position of the threaded part 15. As a result, the threaded part 15 in the open position is pulled onto the container neck 29 and is held thereon in a wobble-free manner. The elastic pretensioning of the first and second retaining strips 19a, 19b also enables the threaded part to be transferred several times from the open position into the closing position, and vice versa. As a result, the container neck 29 can be opened and closed several times, and after opening, the threaded part 15 is held in the open position in a stable and wobble-free manner each time.

[0069] FIGS. 8 through 10 show a further embodiment of how the threaded part 15 can be arranged on the container body 28 in the open position. A shoulder 91, which is formed below the security ring 17 or is formed by the security ring 17 itself, is formed on the container neck 29. The shoulder is formed by a support ring 91 that is located at the transition from the container neck 29 to the container body 28. The threaded part 15 is held in the open position on the first and second retaining strips 19a, 19b. FIGS. 8 through 10 show the container body 28 with a container shoulder 93. The container shoulder 93 represents the transition from the container neck 29 to the cylindrical part of the container body 28. The retaining strips 19a, 19b are dimensioned in such a way that the open rim 25 can be pulled over the support ring 91 into the open position. In the open position, the threaded part 15 rests with the open rim 25 on the surface of the container shoulder 93. The first cylindrical shell 23 rests on the support ring 91. The retaining strips 19a, 19b are slightly tensioned in the open position. As a result, the threaded part 15 is pulled to the support ring 91 and is clamped below the support ring 91. The support ring 91 prevents the threaded part 15 from tilting upwards due to the pulling of the retaining strips 19a, 19b. Rather, the support ring 91 causes the open rim 25 to be pressed against the container shoulder 93. As a result, the threaded part 15 is held particularly stably in the open position according to FIGS. 8 through 10. It is also conceivable for the first cylindrical shell 23 to rest against the security ring 17 if there is no support ring. In this case, the security ring 17 acts as a shoulder for the threaded part 15.

[0070] As FIG. 8 shows, the axis of rotation of the container neck 83 and the axis of rotation 85 of the threaded part enclose an acute angle due to the container shoulder 93. The greater the angle, which may be at most 90 degrees, between the two axes of rotation 83, 85, the greater the tensile force on the container shoulder 93. The smaller the angle between the two axes of rotation 83, 85, the greater the tensile force on the support ring 91.

[0071] FIGS. 11 and 12 show the support ring 91 with a plurality of first depressions 95 arranged next to one another. The first depression 95 is V-shaped or U-shaped. As a result, a first and a second holding side 97, 99 are present at the rims of the depression. A first corner 101 is formed at the transition from the first holding side 97 to the open rim 105 of the support ring 91. A second corner 103 is formed at the transition from the second holding side 99 to the open rim 105 of the support ring 91.

[0072] The depression 95 enables the threaded part 15 to be held particularly stably on the support ring 91 in the embodiment shown in FIGS. 8 through 10. The shell 23 of the threaded part 15 rests not only with one point on the support ring 91 (see FIG. 8), but is pulled by the retaining strips 19a, 19b at one point each on the first and second holding sides 97, 99. These points are formed by the first and second corners 101, 103. This “2-point support” additionally stabilizes the threaded part 15 in the open position. The first depressions 95 can additionally be used for the first and second retaining strips 19a, 19b to be accommodated therein, if the threaded part 15 is in the open position. The retaining strips 19a, 19b are thereby held or guided. The first depressions 95 contribute to the retaining strips 19a, 19b being in a unique position in the open position and not being able to slip. As a result, the threaded part 15 is held in its open position even more stably.

[0073] The first depressions 95 may be formed circumferentially at equal intervals on the support ring 91. As FIG. 12 shows, the first depressions 95 can also be provided in two, symmetrically-arranged subregions separated from one another by two separating webs 107. As a result, a first and a second region in which the threaded part 15 can assume its open position are predetermined.

[0074] FIGS. 13 and 14 show an embodiment in which second depressions 109 are provided on the support ring 91. The second depressions are hook-shaped, so that the first and second retaining strips 19a, 19b can hook into the second depressions 109. The hook-shaped depressions 109 enable improved guidance of the retaining strips 19a, 19b on the support ring 91. The second depressions 109 may be arranged in two subregions on the support ring 91. As already described above, the two subregions can be separated from one another by separating webs 107 in order to predetermine two unique regions for the open position of the threaded part 15. The second depressions 109 can be arranged symmetrically with respect to a plane of symmetry 111. The first and second retaining strips 19a, 19b are also, expediently, arranged symmetrically with respect to the plane of symmetry 111. The plane of symmetry 11 runs through the axis of rotation 85 of the threaded part 15. Indentations 113, which serve to reduce weight, can also be provided on the support ring 91.

[0075] In FIGS. 13 and 14, no first depressions 95 are shown, and the first cylindrical shell 23 rests on the open rim 105 as a result. It is of course possible to provide first depressions 95 for more stably holding the threaded part 15 in the open position, in addition to the second depressions 109.

[0076] An inward-protruding inner cone 87 (FIG. 6), e.g., in the form of a sealing cylinder or a sealing ring, is formed on the bottom 21 of the threaded part 15. The inner cone 87 is designed to coordinate in a sealing manner with the inner wall 89 of the container neck 29 in the closing position. The closure cap 11 can therefore act as a so-called cone sealer and reliably seals the container neck 29.

[0077] In accordance with the following description of FIGS. 15 and 16, the projections 37 may, in a further embodiment, be formed. This embodiment of the projections 37 is the content of the Swiss patent applications with application numbers 01467/19 and 01695/19, the priorities of which were claimed, and the disclosure contents of which are hereby incorporated into the present patent application. Slots 115 are provided on the security ring in a manner distributed over the circumference of the security ring 17. The slots 115 each have an upper edge 117 and a lower edge 119. The upper edge 117 is formed by a circular-arc-shaped section of the security ring 17. The lower edge 119 corresponds to the free rim of a wall section 121 inclined inwards in the radial direction. Due to the inner inclination of the wall section 121, the lower edge 119 has a smaller radius than the security ring 17 and as a result can bear against an abutment (annular projection 35) of the container neck 29 when the threaded part 15 is unscrewed from the container neck 29. The abutment is realized by the annular projection 35, which is formed below the outer thread 31 on the container neck 29. When the threaded part 15 is unscrewed, the lower edge 119 engages in a form fit on the projection 35, as a result of which the security ring 17 is reliably held on the annular projection 35 even under high axial forces.

[0078] Each wall section 121 has a first subsection 123 and two second subsections 125. The first subsection 123 represents an inward-folded shell section and is designed to be flat. The second subsections 125 adjoin the inward-facing sides of the first subsection 123 and connect the latter to the security ring 17. The second subsections 125 can be curved or flat and face one another obliquely inwards. The lower edge 119 of the slot 115 corresponds to the free rims of the first subsection 123 and of the second subsections 125, and lies in a plane 127, which is shown in FIG. 16. The plane 127 is oriented to be perpendicular to the axis of rotation 85 of the container neck 29. These described design features of the wall section 121 have the advantage that the wall section 121 can rest with the entire lower edge 119 on the annular projection 35 and does not yield upwards in the event of an axial tensile force. As a result, the security ring 17 is held non-releasably on the projection 35 or can be removed from the projection 35 only by being destroyed. A movement of the first subsection 123 inwards in the radial direction is prevented by providing the second subsections 125. However, a movement of the first subsection 123 outwards in the radial direction is possible. This movement is flexible and, after being pressed radially outwards, the wall section 121 returns to its inward-inclined base position. This has the further advantage that the security ring 17 can be easily demolded and can be pressed together with the threaded part 15 with little force onto the container neck 29. As a result of the flexibility of the wall section 121, the demolding from an injection mold and the pressing onto the container neck 29 can take place without the risk of damaging the wall section 121.

[0079] The inclined wall sections 121 have a wall thickness that, in comparison to the remaining security ring 17, is reduced. FIG. 16 shows that the region of the lower edge 119 has the smallest wall thickness. As a result, the above-described flexibility of the wall section 121 radially outwards is further improved. The wall thickness of the wall section 121 increases linearly downwards, starting from the lower edge 119.

[0080] FIGS. 15 and 16 show the security ring 17 without the threaded part 15. FIGS. 15 and 16 clearly show that an annular bead 119 on which the upper edges 117 rest is formed above the slots 115 on the security ring 17.

[0081] FIG. 16 shows a first and second inclination angle 131, 133. The first inclination angle 131 indicates the inclination of the first subsection 123 with respect to the plane of the lower edge 119. The first inclination angle 131 has a size of between 60 and 80 degrees, or between 65 and 75 degrees. The greater the first inclination angle 131, the better the stability of the wall sections 121 with respect to vertical force effects or axial tensile forces caused by the unscrewing of the threaded part 15. However, the first inclination angle 131 may not become too large, since the projection 35 can otherwise not be sufficiently engaged from below.

[0082] The second inclination angle 133 indicates the inclination of the slot 115 with respect to the plane of the lower edge 119. The connecting line 135, which represents the inclination of the slot 115, is a connection of the upper edge 117 to the lower edge 119 in a plane spanned by the axis of rotation 85 and the connecting line 135. The second inclination angle 133 is enclosed by the connecting line 135 and the plane 127. The second inclination angle 133 has a size of between 30 and 50 degrees, or between 35 and 45 degrees. The greater the second inclination angle 133, the more easily the security ring 17 can be demolded.

[0083] The closure cap 11 is made of a plastic. PP and HDPE, among others, can be considered suitable plastics.