Closure for a container

Abstract

The invention relates to a closure (11) for closing a pouring opening of a container, having a cylindrical screw thread (15) with an open edge (25) and an inner thread (27) which can interact with an outer thread of a container neck of the container, a tamper-evident ring (17) which is designed to be held at a protrusion which is shaped at the container neck, a plurality of tamper-evident tabs (63) which releasably connect the tamper-evident ring (17) with the open edge (25), and a first retaining band (19a) with a first end (39) and a second end (41), wherein the first end (39) is fixedly connected with the open edge (25) of the screw thread (15) and the second end (41) is fixedly connected with the tamper-evident ring (17). The closure has a second retaining band (19b) with a third end (51) and a fourth end (53), wherein the third end (51) is fixedly connected with the open edge (25) of the screw thread (15) and the fourth end (53) is fixedly connected with the tamper-evident ring (17).

Description

Technical Field

[0001] The invention relates to a closure for closing a container according to the preamble of claim 1 and a container having such a closure according to the preamble of claim 18 . Background Art

[0002] From the prior art in the field of plastic closures with tamper-evident strips, there are known closures which are inseparably held on the container and close the pouring spout of the container. In this regard, the holding function is also important, since legal requirements are expected to require that bottle caps for beverage bottles remain inseparably connected to the beverage bottle even in the open state.

[0003] DE 24 30 775 A1 discloses such a non-detachable closure. The closure consists of a screwable upper part and a lower collar that grips the raised portion of the container mouth from behind. The upper threaded part of the closure is connected to the lower collar via a cylindrical tongue that can be easily torn off. This tongue extends over the entire circumference and is connected to the upper part and the lower collar via an upper or lower connecting serration. The cylindrical tongue is interrupted at one point around the circumference, resulting in two ends: one end is fixedly connected to the screwable closure part and the other end is fixedly connected to the lower collar. The upper and lower connecting serrations tear in an undefined manner when the closure is unscrewed. Therefore, after unscrewing, the upper and lower serrations are partially torn and partially still connected to the closure part and the lower collar. When pouring liquids, a dangling closure on a container can prove disruptive, as the closure can reach into the liquid stream and cause it to spill.

[0004] Purpose of the Invention

[0005] The object of the present invention is therefore to overcome the aforementioned disadvantages by creating a non-detachable closure which does not cause any inconvenience during any use of the container to be closed.

[0006] manual

[0007] This object is successfully achieved by a closure for closing a container with the features indicated in the characterizing part of patent claim 1. Improvements and / or advantageous implementation variants are the subject matter of the dependent claims.

[0008] The present invention is characterized by a second retaining band having third and fourth ends and third and fourth edges, wherein the third end is fixedly connected to the open edge of the threaded element, the fourth end is fixedly connected to the tamper-evident ring, the third edge is releasably connected to the open edge of the threaded element by at least one third predetermined breaking tab, and the fourth edge is releasably connected to the tamper-evident ring by at least one fourth predetermined breaking tab, wherein the first and third ends enclose a first opening angle of at least 110 degrees and at most 170 degrees, preferably at least 117 degrees and at most 135 degrees, relative to the closure center as a vertex, and the second and fourth ends enclose a second opening angle of at least 110 degrees and at most 170 degrees, preferably at least 117 degrees and at most 135 degrees, relative to the closure center as a vertex. The closure center lies in a plane between the open edge and the tamper-evident ring. By selecting the first and third opening angles, the lengths of the first and second retaining bands and their positions along the tamper-evident ring can be precisely determined, thereby performing the following functions independently of the closure diameter: the first and second retaining bands have a length that simultaneously enables the threaded element to be unscrewed from the container neck. The length of the connecting retaining band allows the threaded member to be translated away from the pouring spout and down the container neck to the open position. The provision of two retaining bands forcibly guides this translational movement and forces the threaded member into the open position. In the open position, the threaded member is inseparably retained against the tamper-evident ring or the container neck. In the open position, the base of the threaded member has the same orientation as when screwed onto the container neck, but is translationally offset against the outer wall of the container neck. Furthermore, the first and second retaining bands prevent the threaded member from protruding into the pouring spout when pouring the filling.

[0009] Suitably, the first and second ends enclose a third opening angle of at least 40 degrees and at most 70 degrees, and preferably at least 45 degrees and at most 63 degrees, relative to the center of the cover as a vertex. By selecting the third opening angle, the first retaining band has a limited length, which, in combination with the second retaining band, makes the above-mentioned function possible.

[0010] Suitably, the third and fourth ends enclose a fourth opening angle of at least 40 degrees and at most 70 degrees, and preferably at least 45 degrees and at most 63 degrees, relative to the center of the cover as the vertex. By selecting the fourth opening angle, the second retaining band has a limited length, which, in combination with the first retaining band, makes the above-mentioned function possible.

[0011] Since the first, second, third and fourth opening angles have one center as a vertex, the sum of their angles must be 360 ​​degrees.

[0012] In a particularly preferred embodiment of the present invention, the third and fourth opening angles are of equal length, resulting in the first and second retaining bands being of equal length. The equal length of the first and second retaining bands enables a positively guided translational movement of the threaded element after it has been unscrewed from the container neck. The retaining bands allow movement to the open position of the threaded element in only one direction. Accordingly, the threaded element has only one open position.

[0013] Preferably, the first and second retaining strips are symmetrically arranged on the tamper-evident ring relative to a plane of symmetry extending through the axis of rotation of the screw member. Also preferably, the first, second, third and fourth ends have the same standard spacing relative to the plane of symmetry.

[0014] This means that the first and second retaining bands are arranged 180 degrees apart at the anti-tear ring. Therefore, the first and second retaining bands can slide and stretch unhindered along the way at the container neck when the screw is unscrewed.

[0015] In another particularly preferred embodiment of the present invention, the cross-section of the first and second retaining straps is constant over the length of the first or second retaining strap. The retaining straps thus exhibit constant elastic properties over their length, thereby defining a defined length of the retaining straps over which the threaded element can be stably and securely held against the container in its open position. In the open position, the first and second retaining straps are preloaded. The elastic preload of the retaining straps allows the threaded element to be repeatedly unscrewed and reattached from the container neck and to be reliably held in the open position multiple times. The constant cross-section of the retaining straps over their length prevents the retaining straps from stretching excessively in the open position.

[0016] In another preferred embodiment of the present invention, a first or second tapered portion of the cross-section of the first or second retaining strap is provided at the second or fourth end, thereby enabling the second or fourth end to function as a joint. This joint facilitates the movement of the first and second retaining straps or restricts them to a single rotational direction when the screw member transitions from the closed position to the open position. It is also conceivable that the first and third ends function as joints, thereby enabling the first and second retaining straps to be moved like a lever with two fulcrums during movement of the screw member. For example, the first and third ends could be flexibly secured to the open edge.

[0017] Preferably, the tamper-evident flaps are arranged at uniform intervals along the open edge. This allows the tamper-evident ring to be held sufficiently stably against the threaded member so that the closure can be pressed against the container neck. Due to the uniform spacing of the tamper-evident flaps, the threaded member can also be unscrewed with uniform force.

[0018] Advantageously, the first, second, third, and fourth predetermined breaking tabs are arranged at even intervals along the first and second or third and fourth edges. Thus, the closure is sufficiently stable in the region of the first and second retaining strips to be pressed onto the container neck. Furthermore, the broken predetermined breaking tabs and tamper-evident tabs indicate that the threaded element has been twisted relative to the container neck and is no longer in the original closed position.

[0019] In another particularly preferred embodiment of the present invention, the position of the tamper-evident ring relative to the preferably annular projection of the container neck is variable in the axial and circumferential directions. Since the tamper-evident ring is axially movable upward, it is pulled upward when the threaded element is unscrewed, so that the first and second retaining bands can be made shorter and better adapted to the open position. Since the tamper-evident ring rotates with the threaded element, the first and second retaining bands are only subjected to axial forces and are pulled upward when the threaded element is unscrewed.

[0020] Suitably, first and second recesses are provided on the edge of the tamper-evident ring facing the retaining strip to accommodate the first and second retaining strips. Thus, the first and second retaining strips are space-saving and can be formed from the tamper-evident ring without additional material costs. For example, the first and second retaining strips can be cut from the tamper-evident ring or formed during the production of the closure.

[0021] In another preferred embodiment of the present invention, the first and / or second ends of the first retaining strap and the third and / or fourth ends of the second retaining strap can be bent along predefined bending lines. Thus, the first and second retaining straps can each function like a lever with two fulcrums. The bending lines also ensure that the first and second retaining straps do not bend or kink at random locations in the open position, but rather precisely at the bending lines. Consequently, the threaded element is particularly precisely held by the two retaining straps in the open position and precisely guided by them into the open position.

[0022] It has proven useful to form an inwardly projecting inner cone at the bottom of the threaded element, for example in the form of a sealing cylinder or a sealing ring, which is designed to interact sealingly with the inner wall of the container neck in the closed state. The closure can thus function as a so-called "cone-sealer" and reliably seal the bottle neck.

[0023] In another preferred embodiment of the present invention, the retaining band has a width of between 3 mm and 7 mm, preferably between 4 mm and 5 mm. These dimensions prevent the retaining band from accidentally tearing, particularly when the intended breaking tab is torn. Furthermore, the closure does not become too tall and can be tightly attached to a standardized container neck using the external thread.

[0024] The present invention is also characterized in that the closure is designed to interact with standardized container necks using the external thread and the annular projection. This allows the closure to be placed on standardized container necks, particularly those of PET beverage bottles. Consequently, the container engaging the closure according to the present invention does not need to be specifically adapted to the closure.

[0025] Suitably, closure is made of plastic material, preferably HDPE (High Density Polyethylen, high density polyethylene) or PP (Polypropylen, polypropylene).Therefore, available standard plastic material production closure, known closure with anti-tear ring also is to use these materials production.

[0026] In another preferred embodiment of the present invention, the threaded element, the tamper-evident ring, the retaining band, and at least one of the first and second set breaking elements are manufactured in one piece. This allows the closure to be produced in a die-cast mold without requiring additional processing steps to form the first and second retaining bands. The inner cone is also preferably manufactured in one piece with the rest of the closure.

[0027] In a particularly preferred embodiment of the present invention, the tamper-evident ring has slots with upper and lower edges distributed throughout its circumference. The upper edge is formed by a circular arc-shaped segment of the tamper-evident ring, and the lower edge is formed by an axially inwardly angled wall segment. The lower edge of each slot forms a projection, thereby forming an engagement means for positively engaging with the annular projection. The presence of the engagement means, which are in the form of inwardly angled wall segments and do not extend around the tamper-evident ring, and the presence of the slots further reduces material usage, significantly reducing the plastic material requirement by up to 5%. Furthermore, the inwardly angled wall segments are radially immovable, so that the tamper-evident ring is retained on the annular projection and can only be pulled past the projection by stretching the tamper-evident ring along its circumference. The tamper-evident ring is securely held on the annular projection by the wall segments in such a manner that the predetermined breaking element tears securely before the wall segments are no longer able to hold it. However, the wall segments are flexible or movable in the radially outward direction. Consequently, they can be demolded from the die-casting or injection mold with minimal force. For the same reason, the forces required to press against the container lid are significantly reduced compared to the prior art. This largely prevents any elongation of the tamper-evident ring during demolding and pressing down, which could lead to permanent damage to the retaining element.

[0028] Another aspect of the present invention relates to a container having a container body, a container neck connected to the container body, external threads formed at the container neck, and a closure according to the above description.

[0029] In a particularly preferred embodiment of the present invention, a shoulder is formed on the container neck, formed below or by the tamper-evident ring, and the lengths of the first and second retaining strips are dimensioned such that the threaded element can be lifted from the closed position after being unscrewed from the container neck and positioned below the shoulder in the open position. In the open position, the threaded element is retained by the first and second retaining strips, with the open edge at least partially lying flat against the container body and abutting against the shoulder. The retaining strips pull the threaded element in the direction of the container neck in the transition between the shoulder and the container body, thereby securing it at the transition. By lying flat against the shoulder and the container body, the threaded element has no room for movement and is therefore held particularly stably and securely in the open position.

[0030] The shoulder is preferably a support ring formed at the transition from the container neck to the container body. From a production technology perspective, such a support ring is already present in plastic bottles, particularly PET bottles. Therefore, using this support ring as a stop for the threaded element is particularly practical. If the container lacks a support ring, it is also possible to form a shoulder on the container neck with a certain length in the circumferential direction that allows the first cylindrical outer shell of the threaded element to rest on this shoulder. It is also conceivable to use a tamper-evident ring as a shoulder, on which the first cylindrical outer shell can rest.

[0031] In another particularly preferred embodiment of the present invention, at least one first notch is radially provided on the support ring, thereby forming a first retaining side with a first corner and a second retaining side with a second corner on the support ring, wherein the first and second corners are located at the transition between the first and second retaining sides and the open edge of the support ring. The provision of the notch allows the outer shell of the screw element to abut against the support ring at two points when it is pulled toward the support ring by the first and second retaining bands or clamped against the support ring in the open position. The outer shell abuts against the first corner of the first retaining side and the support ring edge at a first point. The outer shell abuts against the second corner of the second retaining side and the support ring edge at a second point. As a result, the screw element is held stably and securely against the container in the open position. If multiple first notches are provided, they can be used to guide the retaining bands or to hold them in a defined position in the open position of the screw element. This further improves the stability of the screw element in the open position.

[0032] In another preferred embodiment of the present invention, the at least one first notch is V-shaped or U-shaped. This V- or U-shape is easy to produce and ensures that the open edge of the threaded element rests stably at two points, namely the first and second corners. The angles of the first and second corners are particularly advantageous for a V- or U-shaped notch to securely hold the threaded element. The first notch can have a depth extending up to the shoulder of the support ring at the container neck.

[0033] In another preferred embodiment, a plurality of second notches are provided on the support ring and are arranged symmetrically with the first and second retaining straps relative to a plane of symmetry, wherein the plane of symmetry extends through the axis of rotation of the screw element. Preferably, the second notches are hook-shaped. Their hook-shaped design makes them particularly suitable for securing the retaining straps when the screw element is in the open position. The retaining straps can hook into the second notches. Due to the symmetrical arrangement relative to the plane of symmetry, the possible open positions are clearly defined.

[0034] In a preferred embodiment of the present invention, the lengths of the first and second retaining bands are set such that, after being unscrewed from the container neck, the threaded member can be lifted from the closed position and positioned next to the container neck in the open position, where it is retained by the first and second retaining bands. As previously described, the first and second retaining bands, due to their defined lengths and their defined positions on the tamper-evident ring and the threaded member, enable a joint or lever function, allowing the threaded member to be translated into a defined open position and retained on the container neck in this open position.

[0035] In another particularly preferred embodiment of the present invention, the first and second retaining bands are elastically tensioned in the open position of the screw member, thereby pulling the screw member onto the container neck or shoulder in the open position. As previously described, the elastic pretensioning of the retaining bands ensures that the screw member is held firmly and securely on the container neck or shoulder. The elastic tensioning of the retaining bands in the open position also allows the screw member to be transferred to the open position multiple times and thus screwed onto the container neck multiple times.

[0036] Suitably, the axis of rotation of the threaded element and the axis of rotation of the container neck are substantially parallel in the open position of the threaded element. Thus, in the open position, the threaded element is positioned such that it does not protrude beyond the container neck and does not extend into the pouring spout. Consequently, the threaded element does not interfere with the use of the container, even though it is inseparable from the container.

[0037] It has proven advantageous that the lengths of the first and second retaining bands are set so that the axial orientation of the screw is substantially identical in the open position and the closed position. Thus, the screw can be transferred to the open position by a translationally forced movement after being unscrewed from the container neck.

[0038] It has proven advantageous that the closure can be pressed onto the bottle neck. Thus, after filling the container, the container can be closed fully automatically and accordingly quickly and reliably with the closure.

[0039] Further advantages and features emerge from the following description of several exemplary embodiments of the invention with reference to the schematic drawings, which are not necessarily drawn to scale.

[0040] Figure 1 shows an isometric view obliquely from below of the cover in the first embodiment;

[0041] Figure 2 Shown Figure 1 A side view of the cover in FIG.

[0042] Figure 3 shows a side view of the cover in a second embodiment;

[0043] Figure 4 shows a side view of the closure, wherein the closure has been unscrewed from the neck of the container;

[0044] Figure 5 shows a side view of the closure in an open position arranged next to the neck of the container and the closure is implemented according to a second embodiment;

[0045] Figure 6 Shown Figure 5 A top view of the cover in FIG.

[0046] Figure 7 Shown Figure 5 Isometric view of the cover in;

[0047] Figure 8 shows a side view of the closure in an open position arranged under the neck of a container and the closure is implemented according to a second embodiment;

[0048] Figure 9 Shown Figure 8 A top view of the cover in FIG.

[0049] Figure 10 Shown Figure 8 Isometric view of the cover in;

[0050] Figure 11 shows an isometric view of a closure and container in another embodiment;

[0051] Figure 12 Shown Figure 11 A top view of an embodiment of the invention;

[0052] Figure 13 shows an isometric view of a closure and container in another embodiment;

[0053] Figure 14 Shown Figure 13 A top view of an embodiment in FIG.

[0054] Figure 15 A detailed view of the tamper-evident ring in another embodiment is shown, and

[0055] Figure 16 Shown Figure 15 Cross-section of the tamper evident ring with the tilt angle visualized.

[0056] exist Figures 1 to 10 1 shows a closure which is designated overall by reference numeral 11. The closure 11 is inseparably held on a container 13, in particular a bottle 13. The container 13 is Figures 4 to 10 The closure 11 comprises a cylindrical threaded member 15, a tamper evident ring 17 and first and second retaining bands 19a, 19b.

[0057] The threaded member 15 includes a base 21 and a first cylindrical outer shell 23 having an open edge 25. An internal thread 27 is formed on the inner side of the outer shell 23. The container 13 includes a container body 28 and a container neck 29 connected to the container body 28. The container neck 29 is designed as a second cylindrical outer shell. An external thread 31 is formed on the container neck 29, which interacts with the internal thread 27. Thus, the threaded member 15 can be screwed onto and removed from the container neck 29. The closure 11 closes a pouring spout 33, which is disposed within the container neck 29. The tamper-evident ring 17 is retained on the container neck 13 in a form-fitting manner. To this end, an annular protrusion 35 is formed on the outer side of the container neck 29. A protrusion 37 formed on the inner side of the tamper-evident ring 17 engages this annular protrusion from behind. The tamper-evident ring 17 is twistable relative to the container neck 29.

[0058] First retaining band 19a has a first end 39 and a second end 41. First end 39 is fixedly connected to opening edge 25. Second end 41 is fixedly connected to tamper-evident ring 17. Thus, closure 11 is inseparably retained on container 13. Furthermore, first retaining band 19 has a first edge 43 and a second edge 45. First edge 43 is connected to opening edge 25 by at least one first predetermined breaking tab 47, and second edge 45 is releasably connected to tamper-evident ring 17 by at least one second predetermined breaking tab 49.

[0059] Second retaining strip 19b has a third end 51 and a fourth end 53. Third end 51 is fixedly connected to opening edge 25. Fourth end 53 is fixedly connected to tamper-evident ring 17. Thus, closure 11 is additionally and inseparably held against container 13. Furthermore, second retaining strip 19b has a third edge 55 and a fourth edge 57. Third edge 55 is connected to opening edge 25 by at least one third predetermined breaking tab 59, and second edge 45 is releasably connected to tamper-evident ring 17 by at least one fourth predetermined breaking tab 61.

[0060] In addition, the tamper-evident ring 17 is retained at the open edge 25 by a plurality of tamper-evident flaps 63. The tamper-evident flaps are preferably arranged at even intervals on the tamper-evident ring 17. It should be understood that the areas occupied by the first and second retaining strips 19a, 19b on the tamper-evident ring 17 are free of tamper-evident flaps 63.

[0061] Preferably, the first and second retaining strips 19a, 19b have a width between 4 mm and 5 mm, thereby being sufficiently stable.

[0062] Since the closure 11 is axisymmetric, it has a center 65. The center 65 lies in an imaginary plane between the opening edge 25 and the tamper-evident 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, and preferably at least 117 degrees and at most 135 degrees, relative to the center 65 as a vertex. 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, and preferably at least 117 degrees and at most 135 degrees, relative to the center 65 as a vertex.

[0063] First end 39 and second end 43 enclose a third opening angle 71 of at least 40 degrees and at most 70 degrees, and preferably at least 45 degrees and at most 63 degrees, relative to the center of the closure as a vertex. Third end 51 and fourth end 53 enclose a fourth opening angle 73 of at least 40 degrees and at most 70 degrees, and preferably at least 45 degrees and at most 63 degrees, relative to center 65 as a vertex. It should be understood that the sum of first opening angle 67, second opening angle 69, third opening angle 71, and fourth opening angle 73 must be 360 ​​degrees. By selecting the first, second, third, and fourth opening angles, the first and second retaining strips 19a, 19b can have a length that enables the closure to function as described below.

[0064] The third and fourth opening angles 71, 73 are preferably of equal size, and in the same sense, the first and second retaining strips 19a, 19b are of equal length. The first and second retaining strips 19a, 19b are preferably machined out of the tamper-evident ring 17 with an offset of 180 degrees.

[0065] according to Figure 1 and Figure 2 In the embodiment, a first or second tapered portion 75, 77 of the cross section of the first or second retaining strap 19a, 19b is provided at the second or fourth end 41, 53. Due to the first and second tapered portions 75, 77, the second or fourth end 41, 53 can act as a joint.

[0066] In accordance with Figure 3 and Figures 5 to 7 In the embodiment, the cross-section of the first and second retaining straps (19a, 19b) is constant along the length of the first or second retaining strap (19a, 19b). Therefore, the first and second retaining straps 19a, 19b can be stably stretched.

[0067] A first and a second recess 79, 81 are provided on the tamper-evident ring 17. The first and second retaining strips 19a, 19b are accommodated in the first and second recesses 79, 81. Therefore, the first and second retaining strips 19a, 19b can be directly processed from the tamper-evident ring 17, for example, by cutting them out from the tamper-evident ring.

[0068] If the closure 11 is pressed onto the container neck 29, the pouring opening 33 is closed by the closure 11 and the closure 11 is in the closed position. When the threaded element 15 is unscrewed from the container neck 29, the first, second, third and fourth setting breaking tabs 47, 49, 59, 61 and the anti-tampering tab 63 break. The anti-tampering ring 17 rotates with the threaded element 15. During the unscrewing process, the first and second retaining strips 19a, 19b can be erected. In this case, the second and fourth ends 41, 53 act as joints via the first and second tapered portions 75, 77. Preferably, the first and third ends 39, 51 can also be bent, for example outwardly, because this simplifies the translational movement of the threaded element 15 and can be carried out in a defined manner.

[0069] By selecting the third and fourth opening angles 71, 73, the first and second retaining strips 19a, 19b have a length that allows the threaded element 15 to continue to be moved after being unscrewed from the container neck 29. When the container 13 is upright, the threaded element 15 can first be moved linearly in the horizontal direction in the direction of the first and third ends 41, 53. When the pouring spout 33 is completely exposed by the threaded element 15, the threaded element 15 can be moved linearly along the container neck 29 parallel to the rotation axis 83 of the container neck 29. The lengths of the first and second retaining strips 19a, 19b and the optional articulation function of the first and third ends 41, 53 are adjusted here so that the threaded element 15 remains on the container neck 29 in the open position ( Figures 5 to 7In the open position, the axis of rotation 83 of the container neck and the axis of rotation 85 of the threaded member 15 are oriented substantially parallel. In the open position, the threaded member 15 is inseparably retained on the container 13 and secured to the container neck 29 so that it does not protrude into the pouring spout 33 when pouring liquid from the container 13. The first and second retaining bands 19a, 19b enable the threaded member 15 to be transferred to the open position in a forced translational motion after being unscrewed from the container neck 29. Due to the forced guidance, there is only one open position, rather than multiple. The length and cross-section of the first and second retaining bands 19a, 19b are preferably configured so that the length of the first and second retaining bands 19a, 19b is elastically tensioned in the open position of the threaded member 15. Thus, in the open position, the threaded member 15 is pulled to the container neck 29 and held there without shaking. The elastic preload of the first and second retaining bands 19a, 19b also allows the threaded member to be repeatedly transferred from the open position to the closed position and vice versa. As a result, the container neck 29 can be opened and closed repeatedly and the screw 15 is each time held stably and without play in the open position after opening.

[0070] exist Figures 8 to 10 FIGURE 2 shows another embodiment of how the threaded element 15 can be arranged on the container body 28 in the open position. A shoulder 91 is formed on the container neck 29, which is formed below the tamper-evident ring 17 or is formed by the tamper-evident ring 17 itself. Preferably, the shoulder is formed by a support ring 91, which is located at the transition from the container neck 29 to the container body 28. The threaded element 15 is held on the first and second retaining bands 19a, 19b in the open position. Figures 8 to 10 , a container body 28 with a container shoulder 93 is shown. The container shoulder 93 is the transition section from the container neck 29 to the cylindrical part of the container body 28. The retaining bands 19a, 19b are dimensioned so that the open edge 25 can be pulled over the support ring 91 into the open position. In the open position, the threaded element 15 lies flat on the surface of the container shoulder 93 with the open edge 25. The first cylindrical shell 23 abuts the support ring 91. Preferably, the retaining bands 19a, 19b are slightly tensioned in the open position. The threaded element 15 is thus pulled to the support ring 91 and is clamped under the support ring 91. The support ring 91 prevents the threaded element 15 from tipping upwards due to the pulling of the retaining bands 19a, 19b. On the contrary, the function of the support ring 91 is to press the open edge 25 to the container shoulder 93. Therefore, according to Figures 8 to 10 , the screw 15 remains particularly stable in the open position. It is also conceivable that, if there is no supporting ring, the first cylindrical shell 23 abuts against the anti-tear ring 17. In this case, the anti-tear ring 17 acts as a shoulder of the screw 15.

[0071] like Figure 8 As shown, the rotation axis 83 of the container neck and the rotation axis 85 of the threaded member form a sharp angle due to the container shoulder 93. The larger the angle between the two rotation axes 83, 85, which can be up to 90 degrees, the greater the tension on the container shoulder 93. The smaller the angle between the two rotation axes 83, 85, the greater the tension on the support ring 91.

[0072] exist Figure 11 and Figure 12 FIG shows a support ring 91 having a plurality of first notches 95 arranged side by side. The first notches 95 are preferably V-shaped or U-shaped. Thus, the edges of the notches have first and second retaining sides 97 and 99. A first corner 101 is formed at the transition from the first retaining side 97 to the open edge 105 of the support ring 91. A second corner 103 is formed at the transition from the second retaining side 99 to the open edge 105 of the support ring 91.

[0073] The notch 95 enables Figures 8 to 10 In the embodiment shown in FIG, the screw 15 is held particularly stably at the support ring 91. The housing 23 of the screw 15 does not abut against the support ring 91 at only one point (see FIG. Figure 8 ), but rather the housing is pulled to a respective point on the first and second retaining sides 97, 99 by means of the retaining straps 19a, 19b. These points are formed by the first and second corners 101, 103. This "two-point support" additionally stabilizes the screw element 15 in the open position. In addition, the first notch 95 can be used so that the first and second retaining straps 19a, 19b are accommodated in the first notch when the screw element 15 is in the open position. The retaining straps 19a, 19b are thus held or guided. The first notch 95 helps to ensure that the retaining straps 19a, 19b are in a well-defined position in the open position and cannot slip out. This results in the screw element 15 being held more stably in its open position.

[0074] The first notches 95 can be formed around the support ring 91 at the same intervals. Figure 12 As shown, the first notch 95 can also be provided in two symmetrically arranged sub-areas which are separated from one another by two separating webs 107. Thus, a first and a second area are predetermined in which the screw element 15 can assume its open position.

[0075] exist Figure 13 and Figure 14, an embodiment is shown in which a second notch 109 is provided on the support ring 91. The second notch is preferably hook-shaped so that the first and second retaining strips 19a, 19b can be hooked into the two notches 109. The hook-shaped notches 109 make it possible to better guide the retaining strips 19a, 19b on the support ring 91. The second notch 109 can be arranged in two sub-areas on the support ring 91. As mentioned above, these two sub-areas can be separated from each other by a separating tab 107 so that two clear areas are predetermined for the open position of the screw element 15. The second notch 109 can be arranged symmetrically with respect to a symmetry plane 111. Advantageously, the first and second retaining strips 19a, 19b are also arranged symmetrically with respect to the symmetry plane 111. The symmetry plane 111 extends through the symmetry axis 85 of the screw element 15. Recesses 113 can also be provided on the support ring 91 to reduce weight.

[0076] exist Figure 13 and Figure 14 The first notch 95 is not shown in the drawing and the first cylindrical housing 23 therefore lies flat at the opening edge 105. Of course, the first notch 95 can be provided in addition to the second notch 109 in order to make the screw 15 more stable in the open position.

[0077] An inwardly projecting inner cone 87 is preferably formed at the bottom 21 of the threaded member 15 ( Figure 6 ), for example in the form of a sealing cylinder or a sealing ring. The inner cone 87 is designed to interact in a sealing manner with the inner wall 89 of the container neck 29 in the closed position. Thus, the closure 11 can function as a so-called "cone-sealer" and reliably seal the container neck 29.

[0078] according to Figure 15 and Figure 16As described in the following figures, another embodiment includes a protrusion 37. This embodiment of the protrusion 37 is the subject of Swiss Patent Applications Nos. 01467 / 19 and 01695 / 19, the priority of which is claimed and the disclosure of which is hereby incorporated into the present patent application. A slit 115 is provided on the tamper-evident ring 17 over its entire circumference. Each slit 115 has an upper edge 117 and a lower edge 119. The upper edge 117 is formed by an arcuate section of the tamper-evident ring 17. The lower edge 119 corresponds to the open edge of a radially inwardly inclined wall section 121. The inward inclination of the wall section 121 gives the lower edge 119 a smaller radius than the tamper-evident ring 17. Therefore, when the screw member 15 is unscrewed from the container neck 29, the lower edge can collide with the base (annular protrusion 35) of the container neck 29. The seat is realized by an annular projection 35, which is formed below the external thread 31 on the container neck 29. When the threaded element 15 is unscrewed, the lower edge 119 engages the projection 35 in a positively locking manner, so that the tamper-evident ring 17 is securely held on the annular projection 35 even under high axial forces.

[0079] Each wall section 121 has a first subsection 123 and two second subsections 125. The first subsection 123 is an inwardly turned shell section and is preferably designed to be flat. The second subsection 125 is connected to the inwardly turned side of the first subsection 123 and connects it to the tamper-evident ring 17. The second subsections 125 can be designed to be curved or flat and face each other obliquely inward. The lower edge 119 of the split 115 corresponds to the open edge of the first subsection 123 and the second subsection 125 and is located at Figure 16 127 is preferably oriented perpendicular to the axis of rotation 85 of the container neck 29. This design feature of the wall segment 121 has the advantage that the wall segment 121 can abut the annular projection 35 with its entire lower edge 119 and will not yield upward under axial tension. Consequently, the tamper-evident ring 17 is non-releasably held against the projection 35 or can only be separated from it in the event of damage. Axial inward movement of the first sub-segment 123 is prevented by the provision of the second sub-segment 125. However, axial outward movement of the first sub-segment 123 is possible. This movement is flexible, and after the wall segment 121 is pressed radially outward, it returns to its inwardly tilted initial position. This also has the advantage that the tamper-evident ring 17 can be easily demolded and pressed onto the container neck 29 together with the screw element 15 with only minimal force. Due to the flexibility of the wall section 121 , it can be removed from the injection mold and pressed onto the container neck 29 without the risk of the wall section 121 being damaged.

[0080] Preferably, the inclined wall section 121 has a reduced wall thickness relative to the remaining tamper-evident ring 17. Figure 16 As shown in FIG, the region of the lower edge 119 has the smallest wall thickness. This further optimizes the aforementioned flexibility of the wall section 121 radially outward. The wall thickness of the wall section 121 increases linearly downward starting from the lower edge 119.

[0081] exist Figure 15 and 16 FIG shows an anti-tamper ring 17 without a screw member 15. Figure 15 and Figure 16 It can be clearly seen that an annular raised portion 119 is formed above the crack 115 at the anti-tear ring 17, and the upper edge 117 is located on the annular raised portion.

[0082] exist Figure 16 First and second inclination angles 131 and 133 are shown. First inclination angle 131 specifies the inclination of first subsection 123 relative to the plane of lower edge 119. The magnitude of first inclination angle 131 ranges from 60 to 80 degrees, and preferably from 65 to 75 degrees. The greater the first inclination angle 131, the greater the stability of wall section 121 against vertical forces, i.e., axial tensile forces generated by unscrewing screw 15. However, first inclination angle 131 must not be too large, as otherwise the projection 35 would not be adequately engaged from below.

[0083] Second inclination angle 133 defines the inclination of slit 115 relative to the plane of lower edge 119. Connecting line 135, representing the inclination of slit 115, connects upper edge 117 and lower edge 119 within a plane extending through rotation axis 85 and connecting line 135. Second inclination angle 133 is bounded by connecting line 135 and plane 127. The magnitude of second inclination angle 133 ranges from 30 to 50 degrees, and preferably from 35 to 45 degrees. The larger second inclination angle 133 is, the easier it is to demold tamper-evident ring 17.

[0084] The cover 11 is made of plastic. As preferred plastics, PP and HDPE are mainly considered.

[0085] legend:

[0086] 11. Cap

[0087] 13 Containers and bottles

[0088] 15 Threaded parts

[0089] 17 Anti-tamper ring

[0090] 19a First retaining belt

[0091] 19b Second retaining belt

[0092] 21 Bottom of threaded part

[0093] 23 first cylindrical shell

[0094] 25 Open Edge

[0095] 27 internal thread

[0096] 28 Container body

[0097] 29 Container neck

[0098] 31 external thread

[0099] 33 Dumping Spout

[0100] 35 annular protrusion

[0101] 37 protrusion

[0102] 39 First end portion of the first retaining band

[0103] 41 Second end portion of the first retaining band

[0104] 43 First edge of first retaining band

[0105] 45 Second edge of the first retaining band

[0106] 47 First setting fracture strap

[0107] 49 Second setting fracture strap

[0108] 51 Third end portion of the second retaining belt

[0109] 53 Fourth end portion of the second retaining belt

[0110] 55 Third edge of the second retaining band

[0111] 57 Fourth edge of the second retaining band

[0112] 59 Third setting fracture strap

[0113] 61 Fourth setting fracture strap

[0114] 63 Anti-tear film

[0115] 65 Capping Center

[0116] 67 First opening angle

[0117] 69 Second opening angle

[0118] 71 Third opening angle

[0119] 73 Fourth opening angle

[0120] 75 First narrowing section

[0121] 77 Second narrowing section

[0122] 79 first recessed portion

[0123] 81 Second recessed portion

[0124] 83 Rotation axis of container neck

[0125] 85 Rotation axis of screw

[0126] 87 inner cone

[0127] 89 inner wall

[0128] 91 Support ring, shoulder

[0129] 93 Container shoulder

[0130] 95 First notch

[0131] 97 First holding side

[0132] 99 Second holding side

[0133] 101 First Corner

[0134] 103 Second Corner

[0135] 105 Open edge of support ring

[0136] 107 Separator

[0137] 109 Second Slot

[0138] 111 Symmetrical Level

[0139] 113 Notch

[0140] 115 Rift

[0141] 117 Upper Edge

[0142] 119 lower edge

[0143] 121 wall segments

[0144] 123 First sub-segment

[0145] 125 Second subsection

[0146] 127 plane

[0147] 129 annular ridge

[0148] 131 First tilt angle

[0149] 133 Second tilt angle

[0150] 135 Connecting straight lines

Claims

1. A closure (11) for closing a pouring spout (33) of a container (13), comprising a cylindrical threaded element (15) having an open edge (25) and an internal thread (27) capable of interacting with an external thread (31) of a container neck (29) of said container (13), a tamper-evident ring (17) designed to be retained at a projection (35) formed at the container neck (29), - a plurality of tamper-evident flaps (63) which releasably connect the tamper-evident ring (17) to the open edge (25), and a first retaining strip (19a) having a first end (39) and a second end (41) and a first edge (43) and a second edge (45), wherein the first end (39) is fixedly connected to the open edge (25) of the threaded element (15), the second end (41) is fixedly connected to the anti-tear ring (17), the first edge (43) is releasably connected to the open edge (25) of the threaded element (15) by means of at least one first set breaking tab (47) and the second edge (45) is releasably connected to the anti-tear ring (17) by means of at least one second set breaking tab (49), Its characteristics are also that A second retaining band (19b) has a third end (51) and a fourth end (53) and a third edge (55) and a fourth edge (57), wherein the third end (51) is fixedly connected to the open edge (25) of the threaded member (15), the fourth end (53) is fixedly connected to the anti-tear ring (17), the third edge (55) is releasably connected to the open edge (25) of the threaded member (15) by means of at least one third setting breaking strap (59), and the fourth edge (57) is releasably connected to the anti-tear ring (17) by means of at least one fourth setting breaking strap (61), wherein The first end (39) and the third end (51) enclose a first opening angle (67) of at least 110 degrees and at most 140 degrees relative to the center (65) of the closure (11) as a vertex, and The second end (41) and the fourth end (53) enclose a second opening angle (69) of at least 110 degrees and at most 135 degrees relative to the center (65) of the cover (11) as the vertex.

2. The cover according to claim 1, wherein: The first end (39) and the third end (51) enclose a first opening angle (67) of at least 117 degrees and at most 135 degrees relative to the center (65) of the cover (11) as a vertex.

3. The cover according to claim 1, wherein: The second end portion (41) and the fourth end portion (53) enclose a second opening angle (69) of at least 117 degrees and at most 135 degrees relative to the center (65) of the cover (11) as a vertex.

4. The cover according to claim 1, wherein: The first end (39) and the second end (41) enclose a third opening angle (71) of at least 40 degrees and at most 70 degrees relative to the center (65) of the cover (11) as a vertex.

5. The cover according to claim 4, wherein: The first end (39) and the second end (41) enclose a third opening angle (71) of at least 45 degrees and at most 63 degrees relative to the center (65) of the cover (11) as a vertex.

6. The closure according to any one of claims 1 to 5, characterized in that 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 relative to the center of the cover as the vertex.

7. The cover according to claim 6, wherein: The third end (51) and the fourth end (53) enclose a fourth opening angle (73) of at least 45 degrees and at most 63 degrees relative to the center of the cover as the vertex.

8. The cover according to claim 6, wherein: The first end (39) and the second end (41) enclose a third opening angle (71) relative to the center (65) of the cover (11) as the vertex, wherein the third opening angle (71) and the fourth opening angle (73) are the same size, so that the first retaining band (19a) and the second retaining band (19b) are the same length.

9. The closure according to any one of claims 1 to 5, characterized in that The cross-section of the first retaining band (19a) and the second retaining band (19b) is constant along the length of the first retaining band (19a) or the second retaining band (19b).

10. The closure according to any one of claims 1 to 5, wherein: A first tapered portion (75) or a second tapered portion (77) of the cross section of the first retaining strap (19a) or the second retaining strap (19b) is provided at the second end (41) or the fourth end (53), so that the second end (41) or the fourth end (53) can act as a joint.

11. The closure according to any one of claims 1 to 5, wherein: The anti-tear sheets (63) are arranged at uniform intervals along the open edge (25).

12. The closure according to any one of claims 1 to 5, wherein: The first setting rupture strap (47), the second setting rupture strap (49), the third setting rupture strap (59) and the fourth setting rupture strap (61) are arranged at uniform intervals along the first edge (43) and the second edge (45) or the third edge (55) and the fourth edge (57).

13. The closure according to any one of claims 1 to 5, wherein: The position of the tamper-evident ring (17) relative to the protrusion (35) of the container neck (29) is variable in the axial and circumferential directions.

14. The closure according to claim 13, wherein: The protrusion (35) is annular.

15. The closure according to any one of claims 1 to 5, wherein: A first recessed portion (79) and a second recessed portion (81) are provided at the edge of the anti-tear ring (17) facing the first retaining band (19a) and the second retaining band (19b) for accommodating the first retaining band (19a) and the second retaining band (19b).

16. The closure according to any one of claims 1 to 5, wherein: The first end (39) and / or the second end (41) of the first retaining belt (19a) and the third end (51) and / or the fourth end (53) of the second retaining belt (19b) can be bent along a predefined bending line.

17. The closure according to any one of claims 1 to 5, wherein: An inwardly projecting inner cone is formed at the bottom (21) of the threaded member (15), the inner cone being designed to interact in a sealing manner with the inner wall of the container neck (29) in the closed position.

18. The closure according to claim 17, wherein: The inner cone is in the form of a sealing cylinder or a sealing ring.

19. The closure according to any one of claims 1 to 5, wherein: The first retaining band (19a) and the second retaining band (19b) have a width between 3 mm and 7 mm.

20. The closure according to claim 19, wherein: The first retaining band (19a) and the second retaining band (19b) have a width between 4 mm and 5 mm.

21. The closure according to any one of claims 1 to 5, wherein The closure (11) is designed to interact with a standardized container neck (29) using an external thread (31) and an annular protrusion (35).

22. The closure according to any one of claims 1 to 5, wherein The sealing cover (11) is made of plastic material.

23. The closure according to claim 22, wherein: The cover (11) is made of PP or HDPE.

24. The closure according to any one of claims 1 to 5, wherein The threaded member (15), the anti-tear ring (17), the first retaining band (19a), the second retaining band (19b), the anti-tear strap and the at least first set rupture strap (47), the second set rupture strap (49), the third set rupture strap (59) and the fourth set rupture strap (61) are produced in one piece.

25. The closure according to any one of claims 1 to 5, wherein The tamper-evident ring (17) has splits (115) with upper edges (117) and lower edges (119) which are dispersedly arranged over the entire circumference, wherein the upper edge (117) is formed by a circular arc-shaped section of the tamper-evident ring (17) and the lower edge (119) is formed by a radially inwardly inclined wall section (121), and the lower edge (119) of each split (115) forms a protrusion, thereby forming an engagement device for positively engaging with the annular protrusion (35).

26. A container (13) having - container body (28), - a container neck (29) connected to said container body (28), - an external thread (31) formed at the container neck (29), and - a closure (11) for closing a pouring spout provided in the neck (29) of the container, The cover (11) has a cylindrical threaded element (15) having an open edge (25) and an internal thread (27) capable of interacting with an external thread (31) of a container neck (29) of said container (13), a tamper-evident ring (17) designed to be retained at a projection (35) formed at the container neck (29), - a plurality of tamper-evident flaps, said tamper-evident flaps releasably connecting said tamper-evident ring (17) to said open edge (25), and a first retaining strip (19a) having a first end (39) and a second end (41) and a first edge (43) and a second edge (45), wherein the first end (39) is fixedly connected to the open edge (25) of the threaded element (15), the second end (41) is fixedly connected to the anti-tear ring (17), the first edge (43) is releasably connected to the open edge (25) of the threaded element (15) by means of at least one first set breaking tab (47) and the second edge (45) is releasably connected to the anti-tear ring (17) by means of at least one second set breaking tab (49), It is characterized by: The cover is a cover (11) according to any one of claims 1 to 24.

27. The container according to claim 26, characterized in that A shoulder (91) is formed on the container neck (29), the shoulder being formed below or through the anti-tear ring (17), and the lengths of the first retaining band (19a) and the second retaining band (19b) being set so that the threaded member (15) can be lifted from the closed position after being unscrewed from the container neck (29) and can be positioned below the shoulder (91) in the open position, wherein the threaded member (15) is retained at the first retaining band (19a) and the second retaining band (19b) in the open position so that the open edge (25) is at least partially flat on the container body (28) and abuts against the shoulder (91).

28. The container according to claim 27, characterized in that The shoulder is a support ring formed at the transition from the container neck (29) to the container body (28).

29. The container according to claim 28, characterized in that At least one first notch (95) is provided in the radial direction on the support ring, so that a first retaining side (97) having a first corner (101) and a second retaining side (99) having a second corner (103) are formed on the support ring, wherein the first corner (101) and the second corner (103) are present at the transition section from the first retaining side (97) and the second retaining side (99) to the open edge (105) of the support ring.

30. The container according to claim 28 or 29, characterized in that A plurality of second notches (109) are provided on the support ring and the second notches (109) are arranged symmetrically with respect to a symmetry plane (111) together with the first retaining band (19a) and the second retaining band (19b), wherein the symmetry plane (111) extends through the rotation axis (85) of the screw member (15).

31. The container according to claim 30, characterized in that The second notch is hook-shaped.

32. The container according to any one of claims 26 to 29, characterized in that The lengths of the first retaining band (19a) and the second retaining band (19b) are set so that the screw member (15) can be lifted from the closed position after being unscrewed from the container neck (29) and can be positioned next to the container neck (29) in the open position and can be retained at the first retaining band (19a) and the second retaining band (19b) in the open position.

33. The container according to claim 27, wherein The first retaining band (19a) and the second retaining band (19b) are elastically tensioned in the open position of the threaded member (15), so that the threaded member (15) is pulled to the container neck (29) or the shoulder (91) in the open position.

34. The container according to claim 32, wherein The rotation axis (85) of the threaded member (15) and the rotation axis (83) of the container neck (29) are substantially parallel in the open position of the threaded member (15).

35. The container according to claim 32, wherein The lengths of the first retaining band (19a) and the second retaining band (19b) are set so that the axial orientation of the threaded element (15) is substantially identical in the open position and the closed position.

36. The container according to any one of claims 26 to 29, characterized in that The closure (11) can be pressed onto the container neck.

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