CAP

Description

Field of invention

[0001] The invention relates to a closure cap for closing the pouring opening of a container according to the preamble of claim 1 and a container according to the preamble of claim 15. State of the art

[0002] Current technology in the field of plastic closure caps with a tamper-evident band includes caps that are permanently attached to the container and seal its pouring opening. This retention function is also of great importance because legal regulations will be enacted in the coming years requiring that closures of beverage bottles remain permanently attached to the bottle even when open.

[0003] There are also caps known that have two retaining bands connecting a threaded part of the cap to a tamper-evident ring. These two bands can act as a hinge, allowing the threaded part to be folded away from the tamper-evident ring (or the container being sealed) from a closed to an open position. A locking tab is formed on the open edge of the threaded part. This tab allows the threaded part to be locked onto the external thread of the bottle neck in the open position. This secures the threaded part in the open position and does not significantly interfere with the pouring process. However, the tab can only withstand a certain amount of tension on the retaining bands in the open position and tends to bend. As a result, the user receives little feedback when moving the threaded part to the open position.Furthermore, there are many sharp edges in the nose area which can lead to injuries to the user.

[0004] In KR 2009 0005746 A, a closure cap, according to the preamble of claim 1, is disclosed, comprising a threaded portion, a tamper-evident ring, and first and second retaining bands. The retaining bands permanently connect the threaded portion to the tamper-evident ring. Between the ends of the retaining bands, which are fixed to the open edge of the threaded portion, a locking lug projects from the open edge. When the closure cap is placed on a container with an external thread, the locking lug can engage in an open position on the external thread. Object of the invention

[0005] The disadvantages of the described state of the art result in the task of creating an improved captive closure cap that offers improved haptics in terms of operation and safety. Description

[0006] The problem is solved in a cap for closing the pouring opening of a container by the features specified in the characterizing section of claim 1. Further developments and / or advantageous embodiments are the subject of the dependent claims.

[0007] The invention is preferably characterized in that the locking lug has the shape of a first ramp, wherein the height of the first ramp increases radially from the open edge, and in that the groove is flanked by a second and third ramp formed on the guarantor ring, the heights of which decrease circumferentially from the groove. Because the locking lug is a first ramp, it is mechanically reinforced and cannot be bent under load. Under increased load, caused by higher tensile stresses in the retaining straps, the locking lug does not yield. It follows that the threaded part can assume a larger opening angle in the open position, which is not reduced by yielding of the locking lug. A larger opening angle is desirable because it makes the container significantly more user-friendly when pouring contents.The increased tensile stresses also lead to an improved snap-in function of the locking lug in the open position, thus improving the tactile feedback during opening. Furthermore, the sleeve of the threaded part can press more firmly against the support ring of the container, stabilizing the threaded part in the open position and providing the user with audible feedback that the threaded part has snapped into place. The initial ramp also eliminates sharp edges and steps on the locking lug, thereby reducing the risk of injury and improving user safety.

[0008] The second and third ramps protect the first ramp and compensate for the excessive protrusion of the locking lug from the outer contour of the cap. This also minimizes the risk of injury. Additionally, it is conceivable that the threaded part rests against the second and third ramps in the open position, thus stabilizing it and preventing wobble.

[0009] In a particularly preferred embodiment of the invention, the first ramp has a ramp table at its open end. This flattening of the ramp prevents a sharp edge on the first ramp that could cause injury. Additionally, the threaded section with the ramp table can rest against the spout in the open position, thereby stabilizing the open position.

[0010] In a further preferred embodiment of the invention, the first ramp is U-shaped with a first and second leg and a base, wherein the heights of the legs increase from the open edge and the base is the ramp table. The U-shape of the locking lug fulfills all the requirements placed on the first ramp in a material-friendly manner.

[0011] Advantageously, a reinforcing rib is formed on the locking lug between the first and second legs. This increases the mechanical stability of the U-shaped locking lug, enabling it to withstand high bending forces without deforming.

[0012] It has proven advantageous for the legs, base, and optional reinforcing rib to have rounded edges. This minimizes the risk of injury from the first locking lug.

[0013] In another preferred embodiment of the invention, the first ramp is a full-surface thickening. This embodiment enables maximum mechanical stability of the locking lug. Since this embodiment is free of depressions and ribs, or rather, since the entire locking lug is thickened to form the first ramp, the negative impression can be easily created in an injection mold, and demolding the locking lug from the mold is correspondingly simple.

[0014] Advantageously, the first ramp extends beyond the second and third ramps by 1 to 4 mm, and preferably by 1.5 to 2 mm. This ensures that the projection of the locking lug from the outer contour of the cap is small, while still providing sufficient thickness to guarantee reliable engagement with the spout.

[0015] It is advantageous if the first ramp has a length between 4 and 10 mm, and preferably between 5 and 7 mm. This length allows a high tensile stress to build up in the two tension bands in the open position, which leads to the advantages described above, in particular an increased opening angle of the threaded part.

[0016] Advantageously, the first ramp has a height of between 3 and 6 mm at its highest point, and preferably between 4 and 5 mm. The highest point is preferably defined by the ramp table. This height allows for the establishment of a stable open position.

[0017] The invention is also preferably characterized in that the first and third ends are hinged to the open edge by a first and second hinge. The hinges allow the threaded part to pivot around the hinges into the open position relative to the first and second retaining bands, making the process of moving the threaded part into the open position simple and self-explanatory for the user. This also prevents the threaded part from accidentally tearing off the guarantor ring.

[0018] Advantageously, the first edge is detachably connected to the open edge of the threaded part by at least one first predetermined breaking point, and the second edge is detachably connected to the tamper-evident ring by at least one second predetermined breaking point. The third edge can also preferably be detachably connected to the open edge of the threaded part by at least one third predetermined breaking point, and the fourth edge can be detachably connected to the tamper-evident ring by at least one fourth predetermined breaking point. This provides the retaining bands with good axial support, which is necessary so that the cap can be forced onto the spout without the retaining bands being compressed or damaged.

[0019] Preferably, the first and third ends are connected to the guarantor ring by a second and a fourth predetermined breaking point, respectively. The inclusion of these two fourth predetermined breaking points provides sufficient support and retention for the retaining straps, preventing damage when they impact the spout. Therefore, further third and fourth predetermined breaking points are unnecessary, thus saving plastic material.

[0020] It is also advantageous if the first and third ends enclose a first opening angle of at least 4 degrees and at most 10 degrees, and preferably at least 5 degrees and at most 7 degrees, with respect to the center of the closure cap as its apex, and if the second and fourth ends enclose a second opening angle of at least 180 degrees and at most 240 degrees, and preferably at least 200 degrees and at most 220 degrees, with respect to the center of the closure cap as its apex. By choosing these angular dimensions, the first and second retaining bands on the guarantor ring are positioned in such a way that, in the open position of the threaded part, they extend substantially tangentially along the spout. This allows the retaining bands to move with the threaded part without catching on the spout when the threaded part is moved into the open position.

[0021] Advantageously, the opening angle that includes the locking lug with its center point as the apex corresponds essentially to the first opening angle. Preferably, the locking lug is exposed and the groove formed by cutting out the first and second retaining bands from the guarantor ring. It would also be conceivable to provide a larger distance between the first end of the first retaining band and the locking lug, or between the third end of the second retaining band and the locking lug, than if the distance were formed by cutting out the retaining bands.

[0022] Preferably, the first and second ends enclose a third opening angle of at least 50 degrees and at most 80 degrees, and preferably at least 60 degrees and at most 70 degrees, with respect to the center of the closure cap as the vertex.

[0023] It is also preferred if the third and fourth ends enclose a fourth opening angle of at least 50 degrees and at most 80 degrees, and preferably at least 60 degrees and at most 70 degrees, with respect to the center point of the closure cap as the apex. This selection of the third and fourth opening angles ensures that the first and second retaining bands have a length that allows for unscrewing, moving the threaded part into the open position, and holding the threaded part in the open position with high tensile stress (in combination with the dimensioning of the first ramp). In combination with the first and second opening angles, the retaining bands are positioned appropriately on the guarantor ring to allow the protruding movements of the threaded part.

[0024] Advantageously, the third and fourth opening angles are the same, resulting in the first and second retaining straps being of equal length. This ensures that the threaded part is held in the open position with even tension.

[0025] Since the first, second, third and fourth opening angles have a circle center as their vertex, their angle sum must be 360 ​​degrees.

[0026] In a preferred embodiment of the invention, the lengths of the first and second retaining straps are dimensioned such that they are taut in the open position and the threaded part is held in the open position. Preferably, the retaining straps are elastically tensioned, allowing the threaded part to move multiple times between the closed and open positions. The increased tension of the retaining straps, caused by the dimensioning of the retaining straps and the first locking lug, enables the threaded part to be held wobble-free in the open position at a large opening angle.

[0027] Advantageously, a first and second recess are provided on the edge of the guarantor ring facing the first and second retaining bands to accommodate them. This allows the first and second retaining bands to be formed from the guarantor ring in a space-saving manner and without additional material. For example, the first and second retaining bands can be cut out of the guarantor ring or formed during the manufacturing process of the closure cap.

[0028] It has proven advantageous to have an inwardly projecting internal cone, e.g., in the form of a sealing cylinder or a sealing ring, molded onto the base of the threaded part. This cone is designed to seal against the inner wall of the spout in the closed position. The cap can therefore act as a so-called "cone sealer" and reliably seals the spout.

[0029] In a further preferred embodiment of the invention, the first and second retaining bands have a width between 3 mm and 7 mm, and preferably a width between 4 mm and 5 mm. This dimension prevents the retaining band from breaking unintentionally, particularly if the predetermined breaking points are torn off. Furthermore, the closure cap is not too tall and can be sealed with standardized container necks with external threads.

[0030] The invention is also characterized in that the cap is designed to interact with a standardized spout with an external thread and annular projection. The cap can therefore be fitted onto standardized container necks, particularly those of PET beverage bottles. Containers assembled with the cap according to the invention therefore do not need to be specially adapted to the cap.

[0031] The cap is preferably made of a plastic material, ideally HDPE (high-density polyethylene) or PP (polypropylene). Therefore, the cap can be manufactured using standard plastic materials, the same materials used for conventional caps with a tamper-evident ring.

[0032] In a further preferred embodiment of the invention, the threaded part, the guarantor ring, the retaining bands, the break-off and retaining tabs, and the locking lug are manufactured in one piece. This allows the closure cap to be produced in a single injection mold without the need for further machining steps to form the first and second retaining bands. Preferably, the inner cone is also manufactured in one piece together with the other parts of the closure cap.

[0033] In a particularly preferred embodiment of the invention, the warranty ring has slots distributed around its circumference, each with an upper edge and a lower edge. The upper edge is formed by a circular arc-shaped section of the warranty ring, and the lower edge is formed by a wall section inclined radially inwards. The lower edge of each slot forms the projections, thereby creating engagement means for a positive-locking engagement with the annular projection. Since the engagement means, in the form of the inwardly inclined wall sections, are not present on the entire circumference of the warranty ring, and since the slots are also present, the shape of which further reduces material usage, the plastic material requirement can be significantly reduced by up to 5%.Furthermore, the inward wall section is immovable in the radial direction, thus holding the guarantor ring against the annular projection and preventing it from being pulled over the projection until it is stretched along its circumference. The wall sections hold the guarantor ring securely against the annular projection, ensuring that the predetermined breaking points tear reliably before the wall sections' retention mechanism is breached. This stable positive fit also prevents the guarantor ring from being pulled off the spout when the threaded part is moved into its second position, even though this movement generates high tensile stress in the retaining bands. However, the wall sections are flexible and movable in the outward radial direction. This allows the wall sections to be demolded from the injection mold with minimal effort.For the same reason, the application force required to snap on the cap is significantly reduced compared to the state of the art. Stretching of the tamper-evident ring, which can lead to permanent damage to the cap, is largely prevented during demolding and snapping on.

[0034] Another aspect of the invention relates to a container comprising a container body, a spout adjoining the container body, an external thread formed on the spout and a cap according to the description above.

[0035] In another embodiment, the locking lug engages with the external thread in the open position, and the first sleeve rests against the second and third ramps. This holds the threaded part firmly and without wobble in the open position.

[0036] In another embodiment, the locking lug engages with the external thread in the open position, and the first sleeve rests against the support ring. A design is conceivable in which the first sleeve rests against the second and third ramps and the support ring, thereby maximizing the stability of the threaded section in the open position in combination with the increased tensile stress in the retaining bands.

[0037] Further advantages and features will become apparent from the following description of two exemplary embodiments of the invention with reference to the schematic diagrams. These are shown in a representation not to scale: Figure 1: a perspective view of a container closure in the closed position on a container in a first embodiment; Figure 2: a front view of the closure made of Figure 1 Figure 3: a bottom view of the closure made of Figure 1 Figure 4: a side view of the closure made of Figure 1 Figure 5: a perspective view of the closure partially unscrewed from the container; Figure 6: a perspective view of the closure from Figure 1 Figure 7 shows the open position: a front view of the closure in a second embodiment and in the closed position; Figure 8 shows a side view of the closure. Figure 7 Figure 9: a detailed view of the locking lug; Figure 10: a perspective view of the closure. Figure 7 partially unscrewed from the container; Figure 11: a perspective view of the closure from Figure 7 in the open position; Figure 12: a detailed view of the guarantee ring and Figure 13: a sectional view of the guarantee ring from Figure 12 with visualized tilt angles.

[0038] In the Figures 1 to 6 and 7 to 11A closure cap in a first and second embodiment is shown, which is collectively designated by reference numeral 11. The closure cap 11 is captive and held in place on a container 13, for example, a PET bottle. The container 13 is in the Figure 1 , 5 , 6 , 10 and 11 The closure cap 11 comprises a cylindrical threaded part 15, a tamper-evident ring 17, and a first and a second retaining band 19a, 19b. The first and second retaining bands 19a, 19b are circular and formed from the tamper-evident ring 17.

[0039] The threaded part 15 comprises a base 21 and a first cylindrical shell 23 with an open rim 25. An internal thread 27 is formed on the inside of the shell 23. The container 13 comprises a container body 28 and a spout 29 adjoining the container body 28. The spout 29 is designed as a second cylindrical shell. An external thread 31 is formed on the spout 29, which engages with the internal thread 27. This allows the threaded part 15 to be screwed onto and off the spout 29. The cap 11 closes the spout opening 33, which is located within and bounded by the spout 29.

[0040] The guarantee ring 17 is positively engaged with the spout 13. For this purpose, an annular projection 35 is formed on the outside of the spout 29, which can be engaged by projections 37 formed on the inside of the guarantee ring 17 ( Figure 13 The guarantee ring 17 is rotatable relative to the spout 29.

[0041] The first retaining band 19a has a first end 39 and a second end 41. The first end 39 is permanently connected to the open rim 25. The second end 41 is permanently connected to the tamper-evident ring 17. This ensures that the cap 11 is securely attached to the container 13. Furthermore, the first retaining band 19a 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 breakaway tab 47, and the second rim 45 is detachably connected to the tamper-evident ring 17 by at least one second breakaway tab 49.

[0042] The second retaining band 19b has a third end 51 and a fourth end 53. The third end 51 is permanently connected to the open rim 25. The fourth end 53 is permanently connected to the tamper-evident ring 17. This additionally secures the cap 11 to the container 13. Furthermore, the second retaining band 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 breakaway rib 59, and the fourth rim 57 is detachably connected to the tamper-evident ring 17 by at least one fourth breakaway rib 61.

[0043] Additionally, the guarantee ring 17 is held at the open edge 25 by a plurality of guarantee lugs 63. The guarantee lugs are preferably arranged at regular intervals on the guarantee ring 17. It is understood that the areas occupied by the first and second retaining bands 19a, 19b on the guarantee ring 17 are free of guarantee lugs 63.

[0044] It is preferred that the first and second retaining straps 19a,19b have a width between 4 mm and 5 mm to ensure sufficient stability.

[0045] The threaded part 15 is located according to the Figures 1, 2 , 4 , 7 and 8 in a closed position in which it is bounced or screwed onto the spout 29. When unscrewing it from the spout 29, the first and second retaining bands 19a, 19b are pulled upwards in an axial direction and are also elastically stretchable if necessary, so that the threaded part 15 can be unscrewed from the spout 29 and folded away.

[0046] The guarantee ring 17 has a first and a second recess 65, 67. The first and second retaining bands 19a, 19b are accommodated in the first and second recesses 65 and 67, respectively. This makes it possible to machine the first and second retaining bands 19a, 19b directly out of the guarantee ring 17, for example by cutting them out of the guarantee ring.

[0047] A locking lug 71 projects from the open edge 25 adjacent to the first and third ends 39, 51. In the closed position, the locking lug 71 engages in a groove 73. The locking lug has the shape of a first ramp 71, the height of which increases radially from the open edge 25. This ramp shape reinforces the lug 71, allowing the tensile tension in the retaining bands 19a, 19b to be increased in the open position without the lug 71 yielding. This increased tension results in a larger opening angle of the threaded part 15 in the open position, as it is pulled further open by the retaining bands. The lug also engages more clearly with the spout 29 in the open position, thus improving ease of use. Additionally, the ramp shape conceals any sharp edges on the locking lug, significantly reducing the risk of user injury and increasing the safety of the closure cap 11.

[0048] The guarantee ring 17 has a second and third ramp formed on it, flanking the groove 73. The heights of the second and third ramps 75a, 75b decrease circumferentially from the groove 73. The ramps 75a, 75b protect the locking lug 71 in the closed position, as it only slightly protrudes beyond the ramps 75a, 75b. A large change in wall thickness between the guarantee ring 17 and the locking lug 71 is therefore prevented. Because the ramps 75a, 75b partially cover the locking lug 71, the risk of injury is further reduced. In the open position, the threaded part 15 can rest against the ramps 75a, 75b, thus improving the feel when opening and locking the threaded part. Additionally, the jacket 23 can rest against the support ring 72, which is usually present at the transition between the spout 29 and the container body 28 in a container 13, especially a PET bottle. A ramp table 77 is formed at the open end of the first ramp 71.The ramp table extends in a vertical plane in the closed position of the threaded part 15. The ramp table 76 further stabilizes the threaded part in the open position, thus preventing unwanted wobbling of the threaded part in addition to the increased tensile stress of the retaining straps 19a, 19b.

[0049] In the Figures 1 to 6 A first embodiment of the locking lug 71 is shown. As can be seen in the figures, the first ramp 71 is a full-surface thickening. It therefore has no depressions, ribs, or protrusions. This makes it extremely stable, but it requires more plastic material for its formation than the second embodiment described in the next paragraph.

[0050] In the second embodiment, as in the Figures 7 to 11As shown, the first ramp 71 is U-shaped with two legs 77a, 77b. The legs 77a, 77b increase in height from the open edge 25. The base of the "U" forms the ramp table 76. Additionally, a reinforcing rib can be formed between the two legs 77a, 77b. Preferably, all edges of the first ramp 71 are rounded to minimize the risk of injury.

[0051] The first ramp extends 1 to 4 mm, and preferably 1.5 to 2 mm, beyond the second and third ramps. This gives the ramp table 76 an optimal height for locking in the open position. The length of the first ramp, between 4 and 10 mm, and preferably between 5 and 7 mm, also contributes to improved locking.

[0052] The first and third ends 39, 51 are hinged to the open edge 25 by a first and second hinge 79a, 79b. The hinges allow the threaded part 15 to be moved precisely yet smoothly into the open position by pivoting it relative to the first and second retaining bands 19a, 19b.

[0053] The first and third ends 39, 51 are connected to the guarantor ring 17 by a second and a fourth predetermined breaking point 49, 61, respectively. The closure cap 11 can therefore be forced onto the spout 29 without damaging any part of the closure cap 11. To increase stability, further first, second, third, and fourth predetermined breaking points can be provided on the retaining bands 19a, 19b.

[0054] Since the closure cap 11 is rotationally symmetrical, it has a center point 83. The center point 83 lies in the imaginary plane between the open edge 25 and the tamper-evident ring 17. The first end 39 and the third end 51 enclose a first opening angle 85 of at least 4 degrees and at most 10 degrees, and preferably at least 5 degrees and at most 7 degrees, with respect to the center point 83 as its apex. The second end 41 and the fourth end 53 enclose a second opening angle 87 of at least 180 degrees and at most 240 degrees, and preferably at least 200 degrees and at most 220 degrees, with respect to the center point 83 as its apex.

[0055] The first end 39 and the second end 41 enclose a third opening angle 89 of at least 50 degrees and at most 80 degrees, and preferably at least 60 degrees and at most 70 degrees, with respect to the center of the closure cap as its vertex. The third end 51 and the fourth end 53 enclose a fourth opening angle 91 of at least 50 degrees and at most 80 degrees, and preferably at least 60 degrees and at most 70 degrees, with respect to the center 83 as its vertex. It is understood that the sum of the first, second, third, and fourth opening angles 85, 87, 89, 91 must be 360 ​​degrees, since the first, second, third, and fourth opening angles have the center of the circle 83 as their vertex.By selecting the first, second, third and fourth opening angle, it is possible for the first and second retaining bands 19a,19b to have a specific length, which enables the functions of the closure cap 11 described above in combination with the locking lugs.

[0056] Advantageously, the third and fourth opening angles 89, 91 are of equal size, which is equivalent to the first and second retaining bands 19a, 19b being of equal length. The first and second retaining bands 19a, 19b are preferably machined from the guarantor ring 17. The sealing cap 11 can therefore act as a so-called "cone sealer" and reliably seals the spout 29.

[0057] The closure cap 11 is made of plastic. PP and HDPE are among the preferred plastics.

[0058] A sealing cone 93 is formed on the bottom 21 of the threaded part 25 in a known manner, which in the closed position seals against the spout 29 (Figure 3).

[0059] Once the cap 11 has been pressed onto the spout 29, the spout opening 33 is closed by the cap 11 and the cap 11 is in the closed position. When the threaded part 15 is unscrewed from the spout 29, the first, second, third and fourth predetermined breaking points 47, 49, 59, 61 and the guarantee points 63 break.

[0060] In the Figures 5 and 10Each figure shows a position of the threaded part 15 in which the threaded part 15 has been rotated on the spout 29 and the predetermined breaking points and guarantee ridges begin to break. Once the threaded part 15 is completely unscrewed from the spout 29, all predetermined breaking points and guarantee ridges are broken and the threaded part 15 can be pivoted into the open position.

[0061] After unscrewing, the threaded part 15 can be pivoted into the open position around the hinges 79a, 79b. The locking lug 71 is in a position where it is self-explanatory that it engages with the spout or the external thread 31. In the open position, the threaded part is permanently attached to the spout 29 and does not obstruct the pouring process. The locking mechanism fixes the tamper-evident ring 17 to the spout in the direction of rotation, preventing it from twisting. This prevents the cap 11 from rotating into the flow of liquid during pouring. The robust locking lug 71 allows for a large opening angle because it does not bend under the tensile stress of the retaining straps 19a, 19b. The preferred bearing of the mantle 23 on the first and second ramp 75a,75b and the support ring 72 stabilizes the threaded part 15 in the open position in combination with the bearing of the ramp table 76 on the spout 29.

[0062] The projections 37 can be described according to the following figure description of the Figures 12 and 13The guarantee ring 17 is formed by slots 97 distributed around its circumference. Each slot 97 has an upper edge 99 and a lower edge 101. The upper edge 99 is formed by a circular arc section of the guarantee ring 17. The lower edge 101 corresponds to the free edge of an inwardly inclined, radially inclined wall section 103. Due to the inward inclination of the wall section 103, the lower edge 101 has a smaller radius than the guarantee ring 17 and can therefore abut a support (annular projection 35) of the spout 29 when the threaded part 15 is unscrewed from the spout 29. The support is formed by the annular projection 35, which is located below the external thread 31 on the spout 29.When the threaded part 15 is unscrewed, the lower edge 99 engages the projection 35 in a form-fitting manner, thereby reliably holding the guarantor ring 17 against the annular projection 35 even under high axial forces. This increased holding force of the guarantor ring 17 is also significant in this case due to the increased tensile stress in the retaining bands in the open position.

[0063] Each wall section 101 has a first subsection 105 and two second subsections 107. The first subsection 105 represents an inwardly folded shell section and is preferably flat. The second subsections 107 adjoin the inwardly facing sides of the first subsection 105 and connect it to the guarantor ring 17. The second subsections 107 can be curved or flat and are inclined inwards towards each other. The lower edge 101 of the slot 97 corresponds to the free edges of the first subsection 105 and the second subsections 107 and lies in a plane 109, which is Figure 13The plane 109 is preferably oriented perpendicular to the axis of rotation 110 of the spout 29. These described design features of the wall section 103 have the advantage that the entire lower edge 101 of the wall section 103 can rest against the annular projection 35 and does not yield under an upward axial tensile force, acting like a barb. This ensures that the guarantor ring 17 is permanently held against the projection 35 or can only be removed from the projection 35 by destroying it. The provision of the second sections 107 prevents inward movement of the first section 105 in a radial direction. However, outward movement of the first section 105 in a radial direction is possible. This movement is flexible, and the wall section 103 returns to its inwardly inclined initial position after being pushed radially outward.This has the further advantage that the guarantor ring 17 can be easily demolded and, with minimal force, bounced onto the spout 29 together with the threaded part 15. The demolding from an injection mold and the bouncing onto the spout 29 can be achieved through the flexibility of the wall section 103 without any risk of damaging it.

[0064] It is preferred that the inclined wall sections 103 have a reduced wall thickness compared to the rest of the guarantee ring 17. In the Figure 13 It has been shown that the area of ​​the lower edge 101 has the smallest wall thickness. This further improves the radial outward flexibility of the wall section 103 described above. The wall thickness of the wall section 103 increases linearly downwards from the lower edge 101.

[0065] In the Figures 12 and 13 The guarantee ring 17 is shown without the threaded part 15. In the Figures 12 and 13It is clearly visible that above the slots 97 on the guarantee ring 17 a ring ridge 111 is formed, on which the upper edges 99 lie.

[0066] In the Figure 13 A first and second inclination angle 113, 115 are shown. The first inclination angle 113 indicates the inclination of the first section 105 relative to the plane of the lower edge 101. The first inclination angle 113 has a magnitude between 60 and 80 degrees, and preferably between 65 and 75 degrees. The larger the first inclination angle 113, the better the stability of the wall sections 103 against vertical forces or axial tensile forces caused by unscrewing the threaded part 15. However, the first inclination angle 113 must not be too large, otherwise the annular projection 35 cannot be sufficiently engaged.

[0067] The second angle of inclination 115 specifies the inclination of the slot 97 relative to the plane of the lower edge 111. The connecting line 117, which represents the inclination of the slot 97, is a line connecting the upper edge 99 with the lower edge 101 in a plane spanned by the axis of rotation 110 and the connecting line 117. The second angle of inclination 115 is enclosed by the connecting line 117 and the plane 109. The second angle of inclination 115 has a magnitude between 30 and 50 degrees, and preferably between 35 and 45 degrees. The larger the second angle of inclination 115, the easier it is to demold the guarantor ring 17. Legend:

[0068] 11 Cap 13 Container 15 Threaded part 17 Guarantee ring 19 First retaining band, second retaining band 21 Bottom of threaded part 23 First cylindrical sleeve 25 Open rim 27 Internal thread 28 Container body 29 Spout, second cylindrical sleeve 31 External thread 33 Pouring opening 35 Annular projection 37 Projections 39 First end of first retaining band 41 Second end of first retaining band 43 First edge of first retaining band 45 Second edge of first retaining band 47 First breakaway ridge 49 Second breakaway ridge 51 Third end of second retaining band 53 Fourth end of second retaining band 55 Third edge of second retaining band 57 Fourth edge of second retaining band 59 Third breakaway ridge 61 Fourth breakaway ridge 63 Warranty tabs 65 First recess 67 Second recess 71 Locking lug, first ramp 72 Support ring 73 Groove 75a, 75b Second ramp, third ramp 76 Ramp table, base of the U-shaped ramp 77a, 77b First leg, second leg 79a, 79b First hinge,second hinge 81 Reinforcing rib 83 Center of the end cap 85 First opening angle 87 Second opening angle 89 Third opening angle 91 Fourth opening angle 93 Sealing cone 97 Slots 99 Top edge 101 Bottom edge 103 Wall section

Claims

1. Closure cap (11) for closing the pouring opening (33) of a container (13), having - a cylindrical threaded part (15) having an open rim (25), a first cylindrical shell (23), and an internal thread (27), formed on the inside of the shell (23), which can interact with an external thread (31) of a container neck (29) delimiting the pouring opening (33), - a security ring (17) designed to be held on a projection (35) formed on the container neck, - a plurality of security webs (63) which releasably connect the security ring (17) to the open rim (25), - a first retaining strip (19a) having a first and a second end (39, 41) and a first and second rim (43, 45), wherein the first end (39) is fixedly connected to the open rim (25) of the threaded part (15), the second end (41) is fixedly connected to the security ring (17), - a second retaining strip (19b) having a third and a fourth end (51, 53) and a third and fourth rim (55, 57), wherein the third end (51) is rigidly connected to the open rim (25) of the threaded part (15), the fourth end (53) is rigidly connected to the security ring (17), - a engaging lug (71) which protrudes from the open rim (25) adjacently to the first or third end (39, 51), and - a groove (73), provided in the security ring (17), into which the engaging lug (71) projects, wherein it is possible to fold the threaded part (15) from a closure position, in which it closes the pouring opening (33), into an open position, in which it fully opens the pouring opening (33), and vice versa, characterized in that the engaging lug has the shape of a first ramp (71), wherein the height of the first ramp (71) increases in the radial direction starting from the open rim (25), and the groove (73) is flanked by a second and third ramp (75a, 75b), formed on the security ring (17), the heights of which decrease from the groove (73) in the circumferential direction of the security ring (17).

2. Closure cap according to claim 1, characterized in that the first ramp (71) has a ramp table (76) at its open end.

3. Closure cap according to claim 2, characterized in that the first ramp (71) is U-shaped with a first and second leg (77a, 77b) and a base (76), wherein the heights of the legs (75a, 75b) increase starting from the open rim (25), and the base is the ramp table (76) and that a reinforcing rib (81) is formed on the engaging lug (71) between the first and second legs (77a, 77b).

4. Closure cap according to claim 1 or 2, characterized in that the first ramp (71) is an all-over thicker portion.

5. Closure cap according to any one of the preceding claims, characterized in that the first ramp (71) projects beyond the second and third ramps (75a, 75b) by 1 to 4 mm, and preferably by 1.5 to 2 mm.

6. Closure cap according to any one of the preceding claims, characterized in that the first ramp (71) has a length of between 4 and 10 mm, and preferably between 5 and 7 mm.

7. Closure cap according to any one of the preceding claims, characterized in that the first ramp (71) has a height of between 3 and 6 mm, and preferably between 4 and 5 mm, at its highest point.

8. Closure cap according to any one of the preceding claims, characterized in that the first and third ends (39, 51) are articulated to the open rim (25) by a first and second hinge (79a, 79b).

9. Closure cap according to any one of the preceding claims, characterized in that the first rim (43) is releasably connected to the open rim (25) of the threaded part (15) 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).

10. Closure cap according to any one of the preceding claims, characterized in that the first and third ends (39, 51) form a first opening angle (75) of at least 4 degrees and at most 10 degrees, and preferably of at least 5 and at most 7 degrees, with respect to the center point (73) of the closure cap (11) as the apex, and the second and the fourth ends (41, 53) form a second opening angle (87) of at least 180 degrees and at most 240 degrees, and preferably of at least 200 and at most 220 degrees, with respect to the center point (73) of the closure cap (11) as the apex.

11. Closure cap according to any one of the preceding claims, characterized in that the opening angle which encloses the engaging lug with the center point (73) as the apex substantially corresponds to the first opening angle (75).

12. Closure cap according to any one of the preceding claims, characterized in that the first and the second retaining strips (19a, 19b) are the same length.

13. Closure cap according to any one of the preceding claims, characterized in that the length of the first and second retaining strips (19a, 19b) is dimensioned in such a way that they are tensioned in the open position, and the threaded part (15) is held in the open position.

14. Closure cap according to any one of the preceding claims, characterized in that the security ring (17) has slots (95), arranged distributed over the circumference, with an upper edge (97) and a lower edge (99), wherein the upper edge (97) is formed by a circular-arc-shaped section of the security ring (17), and the lower edge (99) is formed by a wall section (101) inclined inwardly in the radial direction, and in that the lower edge (99) of each slot (95) forms projections (37), whereby engagement means are formed for a form-fitting engagement with the annular projection (35).

15. Container (13) having - a container body (28), - a container neck (29) adjoining the container body (28), - an outer thread (31) formed on the container neck (29), and - a support ring formed at the transition from the container body to the container neck, and - a closure cap (11) for closing a pouring opening (32) provided within the container neck (29), the closure cap (11) having - a cylindrical threaded part (15) having an open rim (25) and an inner thread (27), which can interact with the outer thread (31) of a container neck (29) of the container (13), - a security ring (17) designed to be held on a projection (35) formed on the container neck (29), - a plurality of security webs (64), which releasably connect the security ring (17) to the open rim (25), and - a first retaining strip (19a) having a first and a second end (39, 41) and a first and second rim (43, 45), wherein the first end (39) is rigidly connected to the open rim (25) of the threaded part (15), the second end (41) is rigidly connected to the security ring (17), and - a second retaining strip (19b) having a third and a fourth end (51, 53) and a third and fourth rim (55, 57), wherein the third end (51) is rigidly connected to the open rim (25) of the threaded part (15), the fourth end (53) is rigidly connected to the security ring (17), wherein a circular web section (69) of the security ring (17) is formed between the first and the second ends (39, 51), and the threaded part (15) can be folded from a closure position, in which it closes the pouring opening (33), into an open position, in which it fully opens the pouring opening (33), and vice versa, characterized in that the closure cap is a closure cap (11) according to any one of claims 1 to 14.

16. Container according to claim 15, characterized in that, in the open position, the engaging lug (71) latches into the external thread (31), and the first shell (23) rests against the second and third ramps (75a, 75b).

17. Container according to claim 15 or 16, characterized in that, in the open position, the engaging lug (71) latches into the external thread (31), and the first shell (23) rests against the support ring (17).