CH717708B1 - container closure. - Google Patents

Abstract

Container closure (11) for closing the pouring opening (29) of a container (13) with a container neck (15), the container closure (11) having a closure cap (17) with an outer casing (21) having an open edge (25) and a the first head plate (27) adjoining the outer casing (21). Furthermore, the container closure (11) has a retaining element (19) with a retaining ring (33), which is inserted into the closure cap (17) and is connected to it, and with a guarantee ring (39), which is designed for this purpose on one of the Container neck (13) shaped fourth projection (43) to be held. The anti-tamper ring (39) is connected to the retaining ring (33) by a plurality of anti-tamper bars (45), it being possible to indicate that the container closure (11) has been opened for the first time by breaking the anti-tamper bars (45). At least one first retaining strap (47) with a first and a second end and a first and second edge is formed on the anti-tamper ring (39). The first end is firmly connected to the retaining ring (33), the second end is firmly connected to the guarantee ring (39), the first edge is releasably connected to the retaining ring (33) with at least one first predetermined breaking web, and the second edge is connected to at least connected detachably to the guarantee ring (39) by a second predetermined breaking point.

Description

field of invention

The invention relates to a container closure for closing the pouring opening of a container according to the preamble of claim 1 and a container with such a container closure.

State of the art

From the prior art in the field of plastic caps with a guarantee ring caps are known which are captively held on the container and close the pouring opening. The holding function is also important insofar as legal provisions are to be expected which will oblige closures of beverage bottles to be captively connected to the beverage bottle even when they are open.

[0003] There are plastic bottles on the market which have a comparatively large cap. In this case, the closure cap has a diameter which is the same size as the area of the bottle which adjoins the closure cap. The cap can expand like a mushroom towards the top. Such a closure cap can have a diameter of 50 mm and more and, because of its size and the mushroom-shaped shape, also fulfills a decorative purpose in addition to its closure function. The closure cap often has ribs running in a vertical direction on its coat, which further reinforce the visually striking appearance of the closure cap. The cap is no longer held on the bottle after it has been unscrewed and therefore does not meet the requirements described above. The guarantee seal is ensured by a circuit board that seals the pouring opening of the bottle and indicates whether the bottle is originally sealed or has already been opened. The guarantee closure can also be realized by an adhesive label, which extends over the closure cap and the area of the bottle adjoining it or the bottle shoulder and tears when the closure cap is opened for the first time.

object of the invention

The disadvantages of the described prior art result in the task of creating a closure cap as described above which, after opening, is held captive on the container which it closes.

A further object is to show a captive closure cap which is not a hindrance when the container to be closed is used in any way.

Description

The solution of the task is achieved with a container closure for closing the pouring opening of a container by the features listed in the characterizing section of claim 1. Further developments and/or advantageous embodiment variants are the subject matter of the dependent patent claims.

The invention is characterized in that a first tether having a first and a second end and a first and second edge is arranged between the guarantee ring and the retaining ring at least one, wherein the first end is fixed to the retaining ring, the second End is firmly connected to the guarantee ring, the first edge is releasably connected to at least one first predetermined breaking web with the retaining ring and the second edge is releasably connected to at least one second predetermined breaking web with the guarantee ring. The at least one retaining strap makes it possible for closure caps, which cover the container shoulder and whose outer jacket merges steplessly into the adjoining container body, to be held captive on the container. The present invention makes it possible for closure caps with a relatively large outside diameter of between 40 and 80 mm and preferably between 50 and 60 mm to be held captive on the container.

In a preferred embodiment of the invention, the holding element is an inner cap, which is inserted into the closure cap with a second head plate and an adjoining cap skirt, and the cap skirt corresponds to the retaining ring. As a result, existing cap manufacturing technologies can be adopted so that the closure cap is held on the container after opening. The creation of the connection between the closure cap and the inner cap is also not very complex, since the closure cap can be pushed onto the inner cap or the inner cap can be inserted into the closure cap.

It has proven to be expedient if the inner cap is held on the closure cap in a rotationally fixed manner. As a result, the inner cap is also rotated by turning the closure cap. The closure cap is preferably held non-detachably on the inner cap. This can be achieved, for example, by gluing. It is also conceivable that the closure cap can be removed from the inner cap. By removing the cap, the container requires less storage space. The non-rotatable connection can take place in that first ribs are provided on the outside of the cap jacket, which interact with second ribs of the closure cap.

In a further preferred embodiment of the invention, an inwardly projecting annular retaining shoulder is formed on the first top plate. This retaining shoulder makes it possible to compensate for different diameters of the outer shell and the container neck. If these diameters were essentially the same size, the cap jacket of the inner cap or the retaining ring could also be held on the inside of the outer jacket.

The non-rotatable connection can be achieved in that first ribs are provided on the outside of the cap jacket, which interact with second ribs. The second ribs are formed on the inside of the holding ledge, and the first ribs are engageable in the spaces between the first ribs. It is preferred if the first and second ribs are oriented in the direction of the axis of rotation of the container closure.

It is preferred if the retaining ring is held on the inside or outside of the holding shoulder. This allows the product design to be adapted to different requirements. If the internal thread, which interacts with the external thread of the container neck, is to be formed on the retaining shoulder, it is expedient if the retaining ring is fastened to the outside of the retaining shoulder. If an inner cap is provided on which the internal thread is formed, then it makes sense if the retaining ring or the cap jacket of the inner cap is held on the inside of the retaining shoulder.

In a further particularly preferred embodiment of the invention, the retaining ring has an inner diameter which is dimensioned such that the retaining ring is held by a press fit or by a friction fit on the outside of the retaining shoulder. This feature allows the retaining ring to work with existing closure caps. The known closure caps therefore do not require any adjustment, in particular shaped retaining projections for the retaining ring, since the retaining element is pressed onto the existing retaining shoulder of the closure cap. The closure cap can therefore be manufactured in existing injection molds. Expensive additional injection molds, in which additional retaining extensions for the retaining ring are formed on the closure cap, can therefore be dispensed with.

It proves to be advantageous if the retaining ring has at its upper end a shoulder with a conically widening inner diameter in the direction of the first top plate. This configuration of the shoulder makes it easier for the retaining ring to be pressed straight onto the retaining shoulder. The provision of the shoulder prevents the retaining ring from being pressed on at an angle and a possible tilting or damage to the retaining ring as a result.

In a further preferred embodiment of the invention, the retaining ring has a height which corresponds at most to the height of the retaining shoulder. As a result, the entire outer surface of the retaining shoulder can be used so that there is a sufficient frictional connection between the retaining ring and the retaining shoulder. Due to the increased height, the retaining ring or the retaining element have the shape of a sleeve. In order to save material, the height of the retaining ring or sleeve can also be reduced. The prerequisite for this is that, despite the reduced friction surface, the retaining ring cannot be pulled off the retaining shoulder as a result of the tensile force that occurs when unscrewing it.

The retaining ring is expediently held in a form-fitting manner on the retaining shoulder on the inside or outside. For example, first projections can be formed on the retaining ring and second projections can be formed on the retaining shoulder, which interact in a form-fitting manner by latching into one another. The positive fit prevents displacement of the retaining ring along the axis of rotation. This locking can be detachable or non-detachable, depending on whether the closure cap should be removable from the holding element or not.

In a further embodiment of the invention, a single retaining strap is provided which extends over an arc of a circle with an angle between 180 and 350 degrees and preferably with an angle between 270 and 350 degrees. The required length of the retaining strap can be determined by the size of the circular arc angle. It goes without saying that, in addition to the choice of the circular arc angle, the diameter of the retaining ring also has an influence on the length of the retaining strap. The retaining strap has an optimal length, for example, when it extends to a recessed grip on the container. This allows the user to hold the container and the closure cap with one hand at the same time. As a result, the closure cap does not dangle inconveniently on the container when the filling is being served or is drunk directly from the container.

A gap is expediently provided between the first end and the second end of the tether, through which gap the tether is an open ring. The gap separates the first and second ends of the tether. The narrowest possible gap leads to the longest possible retaining strap. The gap is preferably between 0.5 mm and 5 mm wide.

In a preferred embodiment of the invention, a plurality of first and second predetermined breaking webs is provided and the tear strength of the first webs is equal to and greater than the tear strength of the second webs. In this embodiment, the retaining strap remains on the retaining ring when the closure cap is unscrewed. If necessary, the retaining strap can be separated from the open edge of the retaining ring after unscrewing. This can also be done in stages if not all the first webs are torn off.

In a further preferred embodiment of the invention, a plurality of first and second predetermined breaking webs is provided and the tear strength of the second webs is equal to and greater than the tear strength of the first webs. In this embodiment, the retaining strap remains on the guarantee ring when the closure cap is unscrewed. Since only the retaining ring without the retaining strap has to overcome the height of the container neck, it can be easily unscrewed. Since the retaining strap remains on the guarantee ring, its height does not have to be overcome when unscrewing it. It has proven to be expedient if an inwardly protruding inner seal, e.g. in the form of a sealing cylinder or a sealing ring, is formed on the first or second head plate and is designed to work together in a sealing manner with the inner wall of the container neck in the closed position. The cap can therefore act as a so-called ¿cone sealer¿ and reliably seals the bottle neck.

In a further preferred embodiment of the invention, a second retaining strap is provided with a third and a fourth end and a third and fourth edge, the third end being firmly connected to the retaining ring, the fourth end being firmly connected to the guarantee ring, the third edge is detachably connected to the retaining ring with at least one third predetermined breaking web and the fourth edge is detachably connected to the guarantee ring by at least one fourth predetermined breaking web. Preferably, the first and the third end enclose a first opening angle of at least 110 degrees and at most 170 degrees and preferably at least 117 and at most 135 degrees with respect to the center point of the closure cap as the apex and the second and the fourth end enclose a second opening angle of at least 110 degrees and at most 170 degrees and preferably enclose an opening angle of at least 117 and at most 135 degrees with respect to the center point of the closure cap as the apex. The center of the cap lies in the plane between the open edge and the guarantee ring. By choosing the first and third opening angle, the length of the first and second retaining strap and their position along the anti-tamper ring can be precisely determined so that the following functions are fulfilled regardless of the diameter of the closure cap: The first and second retaining strap have a length which at the same time enables the closure cap to be unscrewed from the container neck. The length of the tethers then allows the closure cap to be translated away from the pouring spout and down the container neck into an open position. By providing two retaining straps, this translational movement is forced and the closure cap is forced into an open position. In the open position, the closure cap is held captive on the guarantee ring or the container neck. In the open position, the closure cap is prevented from protruding into the pouring opening when filling is poured out.

The first and second ends expediently enclose a third opening angle of at least 40 degrees and at most 70 degrees and preferably at least 45 and at most 63 degrees with respect to the center point of the closure cap as the apex. The choice of the third opening angle means that the first retaining strap has a defined length, which enables the functions explained above together with the second retaining strap.

The third and fourth end expediently enclose a fourth opening angle of at least 40 degrees and at most 70 degrees and preferably at least 45 and at most 63 degrees with respect to the center point of the closure cap as the vertex. By choosing the fourth opening angle, the second retaining strap has a defined length, which enables the functions explained above together with the second retaining strap.

Since the first, second, third and fourth opening angles have a circle center as the apex, the sum of their angles must be 360 degrees.

In a particularly preferred embodiment of the invention, the third and the fourth opening angle are of the same size, as a result of which the first and the second retaining strap are of the same length. The equal length of the first and second tether allows translational constrained movement after the closure cap is unthreaded from the container finish. The tethers only allow movement into the open position of the closure cap in one direction. Accordingly, there is only one open position for the closure cap.

In a further preferred embodiment of the invention, the position of the guarantee ring can be changed relative to the fourth projections of the container neck in the axial direction and in the circumferential direction. Because the guarantee ring can be displaced upwards in the axial direction, it is pulled upwards when the closure cap is unscrewed, as a result of which the first and second retaining straps can be shortened and better adapted to the open position. Due to the fact that the anti-tamper ring also rotates when the closure cap is turned, the first and second retaining straps only experience an axial force when the closure cap is unscrewed and are pulled upwards.

A first and second recess for receiving the first and second retaining strap is expediently provided on the edge of the guarantee ring facing the retaining straps. As a result, the first and second retaining straps can be shaped from the guarantee ring in a space-saving manner and without additional material expenditure. For example, the first and second tethers can be cut out of the guarantee ring or formed during the manufacturing process of the closure cap.

It has proven to be advantageous if the guarantee webs and the first, second, third and fourth predetermined breaking webs are designed in such a way that they make an acoustic sound when they break. Since the outer jacket covers the ribs, it is not possible to determine visually whether the ribs are broken or not. By emitting a noise when the webs break, it can be clearly determined whether the container closure is being opened for the first time or not, as a result of which a guarantee closure is implemented. It is conceivable that a guarantee strip is glued to the transition from the outer casing to the container body, which strip breaks when the closure cap is rotated for the first time.

In a further embodiment of the invention, an internal thread is formed on the inner cap or the retaining shoulder, which can interact with an external thread of the container neck. The two possibilities for the position of the internal thread allow creative freedom in the product design and the container closure can be realized with a retaining ring which is positioned inside or outside of the retaining shoulder.

In a further particularly preferred embodiment of the invention, the length of the first and second retaining strap is dimensioned such that the closure cap can be lifted from a closed position after unscrewing it from the container neck and can be positioned in an open position together with the retaining ring below a shoulder formed on the container neck is, wherein the closure cap can be held in the open position on the first and second retaining strap, can at least partially rest with the open edge on the container body and can rest against the heel with the outside of the outer jacket. The closure cap is pulled into the transition between the shoulder and the container body in the direction of the container neck with the aid of the retaining straps, as a result of which a holder for the closure cap is created at the transition. Due to the support on the shoulder and the container body, the closure cap no longer has any freedom of movement and is therefore held particularly stable and free of wobbling in this open position. It is preferred if the first and second retaining straps can be stretched elastically into the open position of the closure cap. This makes the bracket even more stable in the open position.

In a particularly preferred embodiment of the invention, the anti-tamper ring has slots distributed over the circumference with an upper edge and a lower edge, the upper edge being formed by a section of the anti-tamper ring running in the shape of a circular arc and the lower edge being formed by a section of the guarantee ring that is inclined inwards in the radial direction Wall portion is formed and the bottom edge of each slot forms third projections, whereby engagement means are formed for positive engagement with the fourth projections. Since the engagement means in the form of the inwardly inclined wall sections are not present over the entire circumference of the anti-tamper ring and slots are also present, the design of which further reduces the use of material, the material requirement for plastic can be significantly reduced by up to 5%. In addition, the wall section is immovable inward in the radial direction, as a result of which the anti-tamper ring is held on the fourth projections (second retaining ring) and cannot be pulled over them until the anti-tamper ring is stretched along its circumference. The guarantee ring is held by the wall sections on the second retaining ring so firmly that the predetermined breaking elements tear before the wall sections are overwhelmed. However, the wall sections are flexible or moveable in the radial outward direction. As a result, the wall sections can be demolded from the injection mold or the injection mold with little effort. For the same reason, the application force for snapping open the container closure is significantly reduced compared to the prior art. An expansion of the guarantee ring, which can lead to permanent damage to the retaining element, is largely prevented when demolding and pressing on.

The closure cap can expediently be snapped onto the bottle neck by means of the inwardly inclined wall sections. After being filled, the container can therefore be closed with the closure cap fully automatically and accordingly quickly and reliably. It is also conceivable that the inner cap is pressed open first and that the closure cap is pushed onto the inner cap in a later method step. The stability, which is necessary for bouncing, is achieved by providing a sufficient number of guarantee and predetermined breaking bars.

In a further preferred embodiment of the invention, the retaining strap has a width between 3 mm and 7 mm and preferably a width between 4 mm and 5 mm. This dimensioning ensures that the retaining strap does not tear off unintentionally, especially if the predetermined breaking points are torn off. In addition, the closure cap is not too high and can be joined together with standardized container necks with an external thread to form a seal.

The invention is also characterized in that the container closure is designed to interact with a standardized container neck with an external thread and an annular projection. The container closure can therefore be placed on standardized container necks, in particular on PET beverage bottles. Containers that are joined together with the container closure therefore do not have to be specially adapted to the container closure.

The closure cap and the holding element are expediently made of a plastic material, preferably HDPE (high density polyethylene) or PP (polypropylene). The closure cap and the retaining element can therefore be produced using standard plastic materials, from which known closure caps with a guarantee ring are also produced.

A further aspect of the invention relates to a container having a container body, a container neck adjoining the container body, an external thread formed on the container neck and a container closure according to the above description.

It proves to be advantageous if a shoulder is formed on the container neck, which is formed below the guarantee ring or is formed by the guarantee ring and the length of the first and second retaining strap is dimensioned such that the closure cap from a closed position after unscrewing can be lifted off the container neck and positioned in an open position below the shoulder, wherein the closure cap is held in the open position on the first and second retaining strap, rests at least partially with the open edge on the container body and rests against the shoulder. The closure cap is therefore held stably and unchangeably in the open position and does not interfere with the use of the container.

The shoulder is expediently a support ring which is formed at the transition from the container neck to the container body. Such a support ring is already present in a plastic bottle, in particular a bottle made of PET, for reasons of production technology. It is therefore particularly practical to use this support ring as a stop for the sealing cap. If there is no support ring on the container, it is also possible to form a shoulder on the container neck with a length in the circumferential direction, which length enables the outer shell to be supported on the shoulder. It is also conceivable that the guarantee ring is used as a shoulder on which the outer shell can be supported.

In a further particularly preferred embodiment of the invention, the first and second retaining straps are stretched elastically in the open position of the closure cap, as a result of which the closure cap is pulled against the container neck or shoulder in the open position. As already explained above, the closure cap is held wobble-free and stable on the container neck or the shoulder due to the elastic prestressing of the retaining straps. The elastic stretching of the retaining straps in the open position also allows the closure cap to be moved into the open position several times and can therefore be screwed onto the container neck several times.

Further advantages and features emerge from the following description of two exemplary embodiments of the invention with reference to the schematic representations. In a representation that is not true to scale: FIG. 1 shows a side view of a container closure in a first embodiment, which is screwed onto a bottle; FIG. 2: a section through the container closure along the line II-II; FIG. 3: an assembly of the container closure in an axonometric view, comprising a closure cap and a retaining ring; Figure 4: the retaining ring in a detailed view; FIG. 5: the closure cap in a closed position; FIG. 6: the closure cap partially unscrewed from the bottle; FIG. 7: the closure cap in an open position; Figure 8 is a side view of a second embodiment of a container closure screwed onto a bottle; FIG. 9: a section through the container closure from FIG. 8 along the line IX-IX; FIG. 10: an assembly of the container closure from FIG. 8 in an axonometric view, comprising a closure cap and an inner cap; FIG. 11: the inner cap in a detailed view; FIG. 12: the closure cap of the second embodiment in a closed position; FIG. 13: the closure cap in a first open position; FIG. 14: the closure cap in a second open position; FIG. 15: the holding element in a further embodiment; FIG. 16 shows a longitudinal section through the holding element from FIG. 15; FIG. 17: an axonometric view of the holding element from FIG. 15; FIG. 18: a longitudinal section through the closure cap with the holding element according to FIG. 15; FIG. 19: a longitudinal section through the closure cap according to FIG. 18 screwed onto a container neck; FIG. 20: a detailed view of the guarantee ring in a further embodiment and FIG. 21: a sectional view of the guarantee ring from FIG. 20 with the angles of inclination visualized.

A first embodiment of a container closure is shown in FIGS. 1 to 7 and a second embodiment of the container closure is shown in FIGS. The container closure 11 is screwed onto a container neck 15 of a container 13, in particular a plastic bottle. The container closure 13 comprises a closure cap 17 and a holding element 19 connected to the closure cap 17. The container closure 11 is preferably used for closing plastic bottles with a capacity of 700 ml to 2000 ml. As can be seen from the figures, the outer jacket 21 of the closure cap 17 merges directly into the contour of the bottle and the shoulder 23 of the bottle is covered by the outer jacket. As a result, the closure cap has a relatively large diameter of approximately 50 mm. This leads to a decorative appearance of the closure cap. In addition, the specified diameter means that the closure cap 17 can be gripped particularly easily. The effects mentioned are further intensified by the fact that the diameter of the closure cap 17 expands upwards in the shape of a mushroom.

In both embodiments, the closure cap 17 has an outer jacket 21 with an open edge 25 and a first top plate 27 adjoining the outer jacket 21 . So that the outer jacket 21 can be aligned with the outer contour of the bottle 13 and the pouring opening 29 can have an inner diameter which is smaller than the diameter of the outer jacket, an inwardly protruding annular retaining shoulder 31 can be formed on the first head plate 27 .

According to the first embodiment, the retaining element 19 has a retaining ring 33 . The retaining ring 33 can be inserted into the closure cap 17 and is thus connected to it. For example, the retaining ring can be slipped onto the retaining shoulder 31 and is held in a form-fitting manner on its outer contour. The form fit can be realized by first projections 35 formed on the retaining ring 33 which latch with second projections 37 formed on the outer contour of the retaining shoulder 31 .

The holding element 19 also has a guarantee ring 39 which is held in a form-fitting manner with third projections 41 on fourth projections 43 formed on the container neck 15 . The guarantee ring 39 is held on the retaining ring 33 with a plurality of guarantee webs 45 which are arranged in the circumferential direction. The guarantee webs 45 are designed to break when the container closure 11 is unscrewed for the first time.

On the guarantee ring 39, a first tether 47 and a second tether 49 is formed according to the first embodiment. The first tether 47 has first and second ends 51,53 and first and second edges 55,57. The first end 51 is fixedly connected to the retaining ring 33 and the second end 53 is fixedly connected to the guarantee ring 39 . The first edge 55 is releasably connected to the retaining ring 33 by first predetermined breaking webs 59 and the second edge 57 is releasably connected to the guarantee ring 39 by second predetermined breaking webs 61 . The second tether 49 has third and fourth ends 63,65 and third and fourth edges 67,69. The third end 63 is fixed to the retaining ring 33 and the fourth end 65 is fixed to the guarantee ring 39 . The third edge 67 is detachably connected to the retaining ring 33 with third predetermined breaking webs 71 and the fourth edge 69 is detachably connected to the guarantee ring 39 with fourth predetermined breaking webs 73 . The first and second retaining strap 47,49 can be accommodated in a first and second recess 75,77 of the guarantee ring 39.

An internal thread 79 can be formed on the inside of the holding shoulder 31 , which interacts with an external thread 81 formed on the container neck 15 . An inner seal in the form of a sealing cylinder 82 is formed on the inside of the first head plate, which sealingly engages in the container neck 15 when the container closure 11 is completely screwed onto the container neck 15 and is in a closed position. Instead of the sealing cylinder, a sealing ring 82 could also be formed, as is shown in FIG.

A support ring 83 is formed on the container neck 15 below the external thread 81 . Below the support ring 83 the container neck 15 merges into a container body 85 . FIGS. 5 to 7 show that the container closure 11 can be unscrewed from the closed position shown in FIG. 5 and transferred to an open position. In the open position, the closure cap 17 and the retaining ring 33 are held captive on the bottle 13 with the first and second retaining straps 47,49. The length of the first and second retaining straps 47 , 49 allows the outside of the outer casing 21 to rest against the underside of the support ring 83 . If the bottle 13 does not have a support ring 83, it would also be conceivable for the outer jacket 21 to be supported on the guarantee ring 39. It is preferred if the open edge 25 rests at least partially on the container body 85 and the retaining straps 47, 49 are stretched elastically in the open position. As a result, the closure cap 17 is pulled onto the support ring 83 and is held particularly stably on the bottle 13 .

Since the guarantee webs 45 and the predetermined breaking webs 59,61,71,73 are covered by the outer shell 21, it is not possible to visually determine whether they are broken or not. It is therefore preferred if these emit an acoustic sound, for example a cracking sound, when they break. The presence of the pop indicates that the container closure 11 is being opened for the first time.

In the figures 8 to 14, the second embodiment is shown. In this embodiment, the retaining element is an inner cap 19. The inner cap 19 comprises a cap jacket 33 and a second head plate 89 adjoining it. The cap jacket 33 corresponds to the retaining ring works together. The inner cap is inserted into the retaining shoulder 31 and is held there in a form-fitting and non-rotatable manner. It would also be conceivable for the inner cap to be held on the inside of the outer casing 21 if the external appearance of the closure cap 17 allows the diameters of the outer casing 21 and the cap casing 33 to correspond. A sealing ring 82 is formed on the inside of the cap jacket to seal the pouring opening 29 . First ribs 91 are formed on the outside of the cap jacket 33 so that the inner cap 19 is held on the retaining shoulder 31 in a rotationally fixed manner. Second ribs 93 are formed on the inside of the holding shoulder 31 . The first ribs 91 engage the spaces between the second ribs 93 when the inner cap 19 is inserted into the retaining ledge 31 . It is preferred if the open ends of the first and/or second ribs 91, 93, which face one another, are beveled. As a result, the ribs 91, 93 align with one another when the closure cap 17 is placed on the inner cap 19 and the inner cap 19 automatically locks in the retaining shoulder 31.

So that the inner cap 19 is also held in the holding shoulder 31 in the vertical direction, the first projections 35 are formed on the outside of the cap jacket 33 . The first projections 35 interact in a form-fitting manner with the second projections 37 which are formed on the inside of the holding shoulder 31 .

In the second embodiment, only a first retaining strap 47 is provided. The first tether 47 extends over an arc of a circle with an angle between 180 and 350 degrees and preferably with an angle between 270 and 350 degrees. As a result, the first retaining strap 47 has a sufficient length in the open position, so that the closure cap does not get in the way of the pouring flow when the filling material is poured out. A gap 95 is provided between the first and second ends 51,53.

Preferably, the tear strength of the first predetermined breaking webs 59 is the same and the tear strength of the second predetermined breaking webs 61 is the same. Because either the tear strength of the first predetermined breaking webs 59 is greater than the tear strength of the second predetermined breaking webs 61 or vice versa, the length of the first retaining strap 47 can be determined by the user. When the closure cap 17 is unscrewed, only the first or the second predetermined breaking webs break. As a result, the first retaining strap 47 has a reduced length after the closure cap 17 has been unscrewed. If the user desires a longer first retaining strap, the first or second predetermined breaking webs that are still intact can be broken, as a result of which the first retaining strap 47 can be lengthened. This can be useful, for example, when pouring filling material out of the bottle 13, since the hand with which the user is holding the bottle can also hold the closure cap 17 at the same time (FIG. 14). A further embodiment of the holding element 19 is shown in FIGS. The inside diameter 97 of the retaining ring 33 is dimensioned in such a way that it is frictionally held on the outside of the retaining shoulder 31 by a press fit. A press fit is therefore realized between the retaining ring 33 and the retaining shoulder. The retaining ring 33 has a shoulder 101 at its open end 99 which faces away from the guarantee ring 39 . The shoulder 101 has a cone shape in that its inner diameter widens continuously in the direction of the first headstock. This makes it easier to press the retaining ring 33 onto the retaining shoulder 31 without the retaining ring 33 tilting or being pressed on the retaining shoulder 31 at an angle. The retaining ring 33 expediently has a height which corresponds at most to the height of the retaining shoulder 31 . As a result, the largest possible friction surface is provided and the retaining ring 33 holds reliably on the retaining shoulder 31, even if increased tensile forces occur when the closure cap 17 is unscrewed. The retaining ring 33 therefore preferably has the shape of a sleeve. The height of the retaining ring 33 can also be reduced to save material, provided that the friction surface is sufficient for a tight press fit. It goes without saying that several combinations of the described features of the container closure are possible. The retaining ring 33 according to the first embodiment can have a first retaining strap 47 as described in the second embodiment or have a first and a second retaining strap 47, 49 as already described above. It is also possible that the inner cap 19 has a first and second retaining strap 47 , 49 , as described in the first embodiment, or only has a first retaining strap 47 .

According to the following description of the figures 15 to 21, the third projections 41 can be formed in a further embodiment. This embodiment of the third projections 41 is the content of the Swiss patent applications with the application numbers 01467/19 and 01695/19, the priorities of which were claimed and the disclosures of which are hereby incorporated into the present patent application. Slots 103 are provided on the guarantee ring distributed over the circumference of the guarantee band 17 . The slots 103 each have an upper edge 105 and a lower edge 107 . The upper edge 105 is formed by a section of the anti-tamper ring 39 in the shape of a circular arc. The lower edge 107 corresponds to the free edge of a wall section 109 inclined inwards in the radial direction. Due to the inner inclination of the wall section 109, the lower edge 107 has a smaller radius than the guarantee ring 39 and can therefore strike an abutment (fourth projections 43) of the container neck 15. when the closure cap 17 is unscrewed from the container neck 15. The abutment is realized by a second retaining ring 43 which is formed below the external thread 81 on the container neck 15 . When the closure cap 17 is unscrewed, the lower edge 107 engages the second retaining ring 43 in a form-fitting manner, as a result of which the guarantee ring 39 is held reliably on the second retaining ring 43 even in the event of high axial forces.

Each wall section 109 has a first section 111 and two second sections 113 . The first partial section 111 represents a jacket section that is folded inwards and is preferably flat. The second sections 113 adjoin the inward-facing sides of the first section 111 and connect it to the guarantee ring 39. The second sections 113 can be curved or flat and face one another at an angle inwards. The lower edge 107 of the slot 103 corresponds to the free edges of the first section 111 and the second sections 113 and lies in a plane 115 which is shown in FIG. The plane 115 is preferably oriented perpendicularly to the central axis 117 of the closure cap 17 . These described design features of the wall section 109 have the advantage that the entire lower edge 107 of the wall section 109 can bear against the second retaining ring 43 and does not yield upwards in the event of an axial tensile force. As a result, the guarantee ring 39 is held inseparably on the second retaining ring 43 or can only be removed from the retaining ring 43 with destruction. A movement of the first subsection 111 inward in the radial direction is prevented by the provision of the second subsections 113 . However, a movement of the first section 111 outwards in the radial direction is possible. This movement is flexible and the wall section 109, after being pushed radially outwards, returns to its basic inwardly inclined position. This has the further advantage that the holding element 19 can be easily removed from the mold and can be snapped onto the container neck 15 together with the holding shoulder 31 with little force. The flexibility of the wall section 109 means that it can be removed from an injection mold and pressed onto a container neck 15 without the risk of the wall section 109 being damaged.

It is preferred if the inclined wall sections 109 have a reduced wall thickness compared to the rest of the anti-tamper ring 39 . FIG. 21 shows that the area of the lower edge 107 has the smallest wall thickness. As a result, the flexibility of the wall section 109 described above is further improved radially outwards. The wall thickness of the wall section 109 increases linearly downwards, starting from the lower edge 107 .

In the figures 20 and 21 the guarantee ring 39 without the retaining ring 33 is shown. It can be clearly seen in FIGS. 20 and 21 that an annular bead 119 is formed above the slots 103 on the guarantee ring 39, on which the upper edges 105 lie.

A first and second angle of inclination 121,123 are entered in FIG. The first angle of inclination 121 indicates the inclination of the first section 111 relative to the plane of the lower edge 107 . The first angle of inclination 121 has a magnitude between 60 and 80 degrees and preferably between 65 and 75 degrees. The greater the first angle of inclination 121, the better the stability of the wall sections 109 against the effects of vertical forces or axial tensile forces caused by the unscrewing of the closure cap 17. However, the first angle of inclination 121 must not be too large, otherwise the second retaining ring 43 would not can be adequately undercut.

The second angle of inclination 123 indicates the inclination of the slot 103 with respect to the plane of the lower edge 107. The connecting line 125, which represents the inclination of the slot 103, is a connection of the upper edge 105 with the lower edge 105 in a plane which is spanned by the central axis 117 and the connecting line 125. The second angle of inclination 123 is enclosed by the straight connecting line 125 and the plane 115 . The second angle of inclination 123 has a size between 30 and 50 degrees and preferably between 35 and 45 degrees. The greater the second angle of inclination 123, the easier it is for the retaining ring 33 to be removed from the mold.

The invention makes it possible for container closures 11, the closure caps 17 of which have a large decorative outer diameter, so that the outer jacket 21 can smoothly transition into the contour of the adjacent container body 85, to be held captive on the bottle or on the container 13 after unscrewing are.

Legend:

11 container closure 13 container, bottle 15 container neck 17 closure cap 19 retaining element, inner cap 21 outer casing 23 shoulder 25 open edge 27 first head plate 29 pouring opening 31 retaining shoulder 33 retaining ring, cap casing 35 first projections 37 second projections 39 guarantee ring 41 third projections 43 fourth projections, second retaining ring 45 guarantee ribs 47 first tether 49 second tether 51 first end of the first tether 53 second end of the first tether 55 first edge of the first tether 57 second edge of the first tether 59 first frangible ribs 61 second frangible ribs 63 third end of the second tether 65 fourth end of the second retaining strap 67 Third edge of the second retaining strap 69 Fourth edge of the second retaining strap 71 Third predetermined breaking webs 73 Fourth predetermined breaking webs 75 First recess 77 Second recess 79 Internal thread 81 External thread 82 Sealing cylinder, sealing ring 83 Support ring, shoulder 85 Tank body 89 Second head plate 91 First ribs 93 Second ribs 95 Gap 97 Inner Diameter of Retaining Ring 99 Open End 101 Shoulder 103 Slots 105 Top Edge 107 Bottom Edge 109 Wall Section 111 First Section 113 Second Sections 115 Plane 117 Central Axis 119 Annulus 121 First Angle of Inclination 123 Second Angle of Inclination 125 Connecting Line

Claims (25)

1. Container closure (11) for closing the pouring opening (29) of a container (13) with a container neck (15), the container closure (11) having ¿ a cap (17) with ¿ an outer jacket (21) having an open edge (25) and ¿ a first head plate (27) adjoining the outer casing (21) and ¿ a holding element (19) with ¿ a retaining ring (33), which is inserted into the closure cap (17) and is connected to it and ¿ a guarantee ring (39), which is designed to be held on a fourth projection (43) formed on the container neck (13) and which is connected to the retaining ring (33) with a plurality of guarantee bars (45), the first opening of the container closure (11) can be indicated by breaking the guarantee bars (45), characterized, that at least one first retaining strap (47) with a first and a second end (51,53) and a first and second edge (55,57) is arranged between the guarantee ring (39) and the retaining ring (33), the first end (51) is firmly connected to the retaining ring (33), the second end (53) is firmly connected to the guarantee ring (39), the first edge (55) with at least one first predetermined breaking web (59) can be detached from the retaining ring (33). and the second edge (57) is detachably connected to the guarantee ring (39) with at least one second predetermined breaking web (61). 2. Container closure according to claim 1, characterized in that the retaining element is an inner cap (19) which is inserted into the closure cap (17) with a second head plate (89) and a cap skirt (33) adjoining it and the cap skirt (33) corresponds to the retaining ring. 3. Container closure according to claim 2, characterized in that the inner cap (19) is held in a rotationally fixed manner on the closure cap (17). 4. Container closure according to one of the preceding claims, characterized in that an inwardly projecting annular retaining shoulder (31) is formed on the first head plate (27). 5. Container closure according to claim 4, characterized in that the retaining ring (33) is held on the holding shoulder (31) inside or outside. 6. Container closure according to claim 4 or 5, characterized in that the retaining ring (33) is held positively on the retaining shoulder (31) inside or outside. 7. Container closure according to one of Claims 4 to 6, characterized in that the retaining ring (33) has an inner diameter (97) which is dimensioned in such a way that the retaining ring (33) is held by a press fit or by a friction fit on the outside of the Holding paragraph (31) is held. 8. Container closure according to one of claims 1 or 4 to 7, characterized in that the retaining ring (33) at its upper end (99) has a shoulder (101) with an inner diameter which widens conically in the direction of the first head plate (27). 9. Container closure according to one of claims 4 to 8, characterized in that the retaining ring (33) has a height which corresponds at most to the height of the retaining shoulder (31). 10. Container closure according to one of the preceding claims, characterized in that a single retaining band (47) is provided, which extends over a circular arc with an angle between 180 and 350 degrees and preferably with an angle between 270 and 350 degrees. 11. Container closure according to one of the preceding claims, characterized in that a gap (95) is provided between the first end (51) and the second end (53) of the retaining strap (47), through which gap (95) the retaining strap (47 ) is an open ring. 12. Container closure according to one of the preceding claims, characterized in that a plurality of first and second predetermined breaking webs (59, 61) is provided and the tearing strength of the first predetermined breaking webs (59) is the same and greater than the tearing strength of the second predetermined breaking webs (61 ). 13. Container closure according to one of Claims 1 to 11, characterized in that a plurality of first and second predetermined breaking webs (59, 61) is provided and the tearing strength of the second predetermined breaking webs (61) is the same and greater than the tearing strength of the first predetermined breaking webs (59). 14. Container closure according to one of the preceding claims, characterized in that a second retaining strap (49) with a third and a fourth end (63,65) and a third and fourth edge (67,69) are provided, the third end ( 63) is firmly connected to the retaining ring (33), the fourth end (65) is firmly connected to the guarantee ring (39), the third edge (67) is releasably connected to the retaining ring (33) with at least one third predetermined breaking web (71). and the fourth edge (69) is detachably connected to the guarantee ring (39) with at least one fourth predetermined breaking web (73). 15. Container closure according to claim 14, characterized in that on the edge of the guarantee ring (39) facing the first and second retaining strap (47, 49) there are a first and second recess (73, 75) for receiving the first and second retaining strap (47, 49) is provided. 16. Container closure according to one of claims 2 to 15, characterized in that an inwardly protruding inner seal, e.g. in the form of a sealing cylinder (82) or a sealing ring (82), is formed on the first or on the second head plate (27, 89). which is designed to cooperate in a sealing manner with the inner wall of the container neck (15) in a closed position. 17. Container closure according to one of claims 14 to 16, characterized in that the guarantee webs (45) and the first, second, third and fourth predetermined breaking webs (59,61,71,73) are designed in such a way that they make an acoustic sound when they break give away. 18. Container closure according to one of claims 4 to 17, characterized in that an internal thread (79) is formed on the inner cap (19) or the retaining shoulder (31), which can interact with an external thread (81) of the container neck (15). 19. Container closure according to one of claims 14 to 18, characterized in that the length of the first and second retaining strap (47,49) is dimensioned such that the closure cap (17) can be lifted from a closed position after unscrewing it from the container neck (17). and can be positioned in an open position together with the retaining ring (33) below a shoulder (83) formed on the container neck (17), it being possible for the closure cap (17) to be retained in the open position on the first and second retaining straps (47, 49), the open edge (25) can rest at least partially on the container body (85) and can rest against the shoulder (83), preferably with the outside of the outer casing (21). 20. Container closure according to one of the preceding claims, characterized in that the anti-tamper ring (39) has slots (103) distributed over the circumference with an upper edge (105) and a lower edge (107), the upper edge (105) being formed by a circular arc extending section of the anti-tamper ring (39) and the lower edge (107) is formed by a wall section (109) inclined inwards in the radial direction and that the lower edge (107) of each slot (103) forms third projections (41), whereby Engagement means are formed for positive engagement with the fourth projections (43). 21. Container closure according to claim 20, characterized in that the closure cap (11) can be snapped onto the bottle neck (15) by the inwardly inclined wall sections (109). 22. Container (13) comprising ¿ a container body (85), ¿ a container neck (15) adjoining the container body (85), ¿ an external thread (381) formed on the container neck (15) and ¿ a container closure (11) according to any one of the preceding claims. 23. Container according to claim 22, characterized in that on the container neck (15) a shoulder (83) is formed, which is formed below the guarantee ring (39) or is formed by the guarantee ring (39) and the length of the first and second Retaining strap (47, 49) is dimensioned in such a way that the closure cap (17) can be lifted from a closed position after unscrewing it from the container neck (15) and can be positioned in an open position below the shoulder (83), the closure cap (17) being in the is held in the open position on the first and second retaining straps (47,49), with the open edge (25) resting at least partially on the container body (83) and resting against the shoulder (83). 24. Container according to claim 23, characterized in that the step is a support ring (83) which is formed at the transition from the container neck (15) to the container body (85). 25. Container according to claim 23 or 24, characterized in that the first and second retaining straps (47, 49) are stretched elastically when the closure cap (17) is in the open position, whereby the closure cap (17) is held against the container neck (15) in the open position. or paragraph (83) is drawn.