WO2020182854A1

WO2020182854A1 - Container closure and container

Info

Publication number: WO2020182854A1
Application number: PCT/EP2020/056445
Authority: WO
Inventors: Franz-Michael LÄSSER; Werner STEURER; Erwin Mayer; Peter WINGHART
Original assignee: Alpla Werke Alwin Lehner Gmbh & Co. Kg
Priority date: 2019-03-11
Filing date: 2020-03-11
Publication date: 2020-09-17

Abstract

The invention relates to a closure cap (11) for closing the pouring opening (33) of a container (13), having a cylindrical threaded part (15) with an open edge (25) and an inner thread which can interact with an outer thread (31) of a container neck (29) of the container (13), a security ring (17) which is designed to be held on a protrusion (35) molded on the container neck (29), a plurality of security webs which releasably connect the security ring (17) to the open edge (25), a first holding strip (19a) with a first and a second end (39, 41) and a first and a second edge (43, 45), the first end (39) being rigidly connected to the open edge (25) of the threaded part (15) and the second end (41) being rigidly connected to the security ring (17), and a second holding strip (19b) with a third and a fourth end and a third and a fourth edge, the third end being rigidly connected to the open edge (25) of the threaded part (15) and the fourth end being rigidly connected to the security ring (17). The second end (41) is arranged on the circular path of the security ring (17) in a substantially diametrically opposed manner to the fourth end before the threaded part (15) is opened for the first time.

Description

CONTAINER CAP AND CONTAINER

Field of invention

The invention relates to a closure cap according to the preamble of claim 1 and a container according to the preamble of claim 21.

State of the art

From the prior art in the field of plastic closure caps with a tamper-evident band, closure caps are known which are held captive on the container and close its pouring opening. The holding function is also important because legal provisions are to be expected which oblige the closures of beverage bottles to be permanently connected to the beverage bottle even when they are open.

Such a captive closure cap for closing a container is known from DE 93 18 243 U1. After the threaded part of the cap has been unscrewed, it is held on the guarantee band with a tether. The tether is integrated in the tamper-evident band when the cap is closed. Therefore, the guarantee strap must have an increased height, which corresponds to the sum of the height of a conventional guarantee strap and the height of the tether. The increased height therefore inevitably leads to increased material consumption in the production of a corresponding closure cap.

At the end of the invention

The disadvantages of the described prior art result in the task of creating a captive closure cap whose material consumption differs only insignificantly from the material consumption of a conventional closure cap with a tamper-evident band.

A further object is to show a captive closure cap which is particularly easy to use, or is self-explanatory and does not prevent any use of the container to be closed. Description

The solution to the problem is achieved with a cap for closing the pouring opening of a container by the features listed in the characterizing section of the patent claim 1. Developments and / or advantageous design variants are the subject of the dependent claims.

The invention is preferably characterized in that the second end is arranged on the circular path of the guarantee ring essentially diametrically opposite the fourth end before the threaded part is opened for the first time. The diametrical arrangement means that the first and second retaining straps do not necessarily have to be elastically deformed in order to be able to be transferred into the open position. Even in the open position in which the threaded part is held on the container, the belts do not have to be elastically deformed or stretched. The symmetrical arrangement also makes it possible for the threaded part to be pivoted to the left or to the right into a holding position next to the pouring opening after unscrewing. The substantially diametrical arrangement also allows the threaded part to be easily and homogeneously opened.

In a further particularly preferred embodiment of the invention, before the threaded part is opened for the first time on the circular path of the guarantee ring, the first end is arranged essentially diametrically opposite the third end. This arrangement also makes it easier to position the threaded part but also to screw the threaded part onto the container neck again.

In a further preferred embodiment of the invention, before opening the cap for the first time, the first, second, third and fourth ends are arranged one after the other in increasing order on the circular path of the guarantee ring counterclockwise if the internal thread and the external thread are right-hand threads . This arrangement of the retaining straps on the open edge of the threaded part and on the guarantee ring enables both retaining straps to experience the same compressive load during the opening of the threaded part. None of the Haltebän experiences a tensile force directed against the pressure load. At the same time, the straps are widened horizontally away from the bottle neck and any predetermined breaking webs are broken open as a result of the lifting movement of the threaded part. This is a allows easy, homogeneous opening of the closure cap with a uniform opening force. With this arrangement of the retaining straps there is also no risk of these tangling or crossing over. The opening of the closure cap is therefore not or only insignificantly different from opening a closure cap without retaining straps.

It is useful if the first edge is releasably connected to the open edge of the threaded part with at least a first predetermined breaking web and the second edge is releasably connected to the guarantee ring with a second predetermined breaking web and if the third edge has at least a third predetermined breaking web to the open edge of the threaded part is releasably connected and the fourth edge is releasably connected with at least one fourth predetermined breaking web with the guarantee ring. As a result, the retaining straps are held in a stable manner on the threaded part and the guarantee ring. This means that the closure cap can be bounced onto the container neck despite the provision of two retaining straps.

It is preferred if the first and the third end enclose a first opening angle of at least 170 degrees and at most 190 degrees and preferably of at least 175 and at most 185 degrees with respect to the center point of the closure cap as the apex and the second and the fourth end a second opening angle of at least 170 degrees and at most 190 degrees and preferably of at least 175 and at most 185 degrees with respect to the center of the closure cap as the apex. It is therefore conceivable that the first and second opening angles differ slightly from the arrangement described above, but the second and fourth or the first and third ends of the retaining straps are still arranged essentially diametrically opposite one another. The center of the closure cap lies in the plane between the open edge and the guarantee ring. By choosing the first and the third opening angle, the length of the first and the second retaining strap and their position along the guarantee ring can be precisely determined so that the following functions are fulfilled, depending on the diameter of the closure cap: The first and second retaining straps have a length wel che enables the threaded part to be unscrewed from the container neck. In addition, the length of the retaining straps allows the threaded part to be moved translationally away from the pouring opening and downwards along the container neck into a Open position can be moved. By providing two straps, this movement is forcibly guided and the threaded part is forced into an open position. In the open position it is ensured that the threaded part does not protrude into the pouring opening when pouring out filling material.

The first and second ends expediently enclose a third opening angle of at least 110 degrees and at most 140 degrees and preferably of at least 120 and at most 130 degrees with respect to the center point of the closure cap as the apex. By choosing the third opening angle, the first retaining strap has a defined length, which enables the functions set out above together with the second retaining strap.

The third and fourth ends expediently include a fourth opening angle of at least 110 degrees and at most 140 degrees and preferably of at least 120 and at most 130 degrees with respect to the center point of the closure cap as the apex. By choosing the fourth opening angle, the second retaining strap has a defined length, which enables the functions set out above together with the second retaining strap.

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

In a particularly preferred embodiment of the invention, the third and fourth opening angles are of the same size, as a result of which the first and second retaining straps are of the same length. The same length of the first and the second retaining strap enables the forced translatory movement after the threaded part is unscrewed from the container neck.

In a further particularly preferred embodiment of the invention, the cross section of the first and second retaining strap is constant along the length of the first and second retaining strap, respectively. The retaining straps thereby have constant elastic properties along their length, whereby a defined length of the retaining straps can be determined, at which the threaded part can be held stable and wobble-free on the container in its open position. In the open position, the first and second retaining straps are pretensioned. The elastic pretensioning of the retaining straps enables the threaded part to be unscrewed several times from the container neck and onto it again can be screwed and can be reliably held in the open position several times. The constant cross section of the straps along their length prevents overstretching of the straps in the open position.

It is preferred if the guarantee webs are arranged at regular intervals along the open edge. The guarantee ring is therefore held sufficiently stable on the Ge threaded part so that the closure cap can be bounced onto the container neck. The threaded part can also be unscrewed with even force thanks to the even spacing of the guarantee bars.

The first, second, third and fourth predetermined breaking webs are expediently arranged at regular intervals along the first and second or the third and fourth edge. As a result, the closure cap is also sufficiently stable in the area of the first and second retaining straps so that it can be bounced onto the container neck. In addition, the broken predetermined breaking bars and guarantee bars indicate that the threaded part has already been twisted relative to the container neck and is no longer originally closed.

In a further particularly preferred embodiment of the invention, the position of the guarantee ring relative to the annular projection of the container neck can be changed in the axial direction and in the circumferential direction. Because the guarantee ring can be moved upward in the axial direction, it is pulled upward when the threaded part is unscrewed, so that the first and second retaining straps can be made shortened and can be better adapted to the open position. Because the guarantee ring rotates when the threaded part is rotated at the beginning of unscrewing, the first and second retaining straps experience an axial force when the threaded part is unscrewed and are pulled upwards. It is preferred if the guarantee ring can only execute a very small stroke movement (for example 1 to 2 mm) in the axial direction so that the predetermined breaking webs can be torn open as a result of the rotary movement or the stroke movement of the threaded part.

It proves to be advantageous if the guarantee ring has an anti-rotation device which prevents the rotation of the guarantee ring relative to the bottle neck when the threaded part is opened when the guarantee ring has rotated a certain distance in the circumferential direction. The anti-twist device enables that when twisting of the threaded part in the opening direction, the compressive force on retaining straps is increased, as these can be supported against the guarantee ring. Since the guarantee ring rotates with the threaded part at the start of the twisting, the retaining straps are not wrapped around the container neck.

Conveniently, a first and second recess for receiving the first and second Halteban is provided on the edge of the guarantor facing the retaining strap. As a result, the first and second retaining straps can be formed from the guarantee ring in a space-saving manner and without additional material expenditure. For example, the first and second retaining straps can be formed from the guarantee ring by making appropriate cuts. Preferably, however, the closure cap according to the invention is produced by injection molding.

In a further preferred embodiment of the invention, the first and / or the second end of the first retaining strap and the third and / or the fourth end of the second retaining strap can be bent along predefined folding lines. As a result, the first and second retaining straps can each act like a lever with two pivot points. The kink lines also make it possible that the first and second retaining straps are not bent or kinked at random positions in the open position, but rather precisely at the kink lines. As a result, the threaded part is held particularly precisely in the open position by the two retaining straps and is guided exactly into the open position by the two retaining straps.

It has proven expedient if an inwardly protruding inner cone, e.g. in the form of a sealing cylinder or a ring you are formed, which is designed to cooperate sealingly with the inner wall of the container neck in the closed position. The closure cap can therefore act as a so-called "cone-sealer" and reliably seals the bottle neck.

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 when the predetermined breaking webs are torn off. In addition, the closure cap not too high and can be joined together with standardized container necks with external threads.

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

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

In a further preferred embodiment of the invention, the threaded part, the guarantee ring, the retaining straps and the at least one first and second predetermined breaking element are made in one piece. As a result, the closure cap can be produced in an injection mold without the need for further processing steps in order to form the first and second retaining straps. Preferably, the inner cone is also produced in one piece together with the other parts of the closure cap.

In a particularly preferred embodiment of the invention, the guarantee ring has slots distributed over the circumference with an upper edge and a lower edge, the upper edge being formed by an arcuate section of the guarantee ring and the lower edge being formed by a wall section inclined inward in the radial direction is and the lower edge of each Schlit Zes forms the projections, whereby engagement means are formed for a positive engagement with the annular projection. Since the engagement means in the form of the inwardly inclined wall sections are not fully available on the guarantee ring and there are also slots whose shape further reduces the amount of material used, 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 guarantee ring is held on the annular projection and can only be pulled over it when the guarantee ring is along its circumference is stretched. The guarantee ring is held so firmly by the wall sections on the annular projection that the predetermined breaking elements tear reliably before the holding of the wall sections is overcome. However, the wall sections are flexible or movable in the outward radial direction. As a result, the wall sections can be removed from the injection mold or the injection molding tool with little effort. For the same reason, the application force for bouncing open the closure cap is significantly reduced compared to the prior art. A stretching of the guarantee ring, which can lead to permanent damage to the closure cap, is largely prevented during demolding and bouncing.

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 closure cap according to the description above.

In a particularly preferred embodiment of the invention, 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 threaded part ben from a closed position after unscrewing the container neck can be lifted off and positioned below the paragraph in an open position, the threaded part being held in the open position on the first and second retaining straps, at least partially resting with the open edge on the container body and resting against the paragraph. The threaded part is pulled into the transition between the shoulder and the container body in the direction of the container neck with the help of the retaining straps, whereby a holder for the threaded part is created at the transition. Due to the support on the paragraph and the container body, the threaded part no longer has any freedom of movement and is therefore fixed in this open position.

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 present in a plastic bottle, in particular a bottle made of PET, anyway for production engineering aspects. It is therefore particularly practical to use this sup port ring as a stop for the threaded part. If there is no support ring on the container, it is also possible to have a shoulder on the container neck with a Form length in the circumferential direction, which length allows a support of the first cylindrical mantle of the threaded part on the shoulder. It is also conceivable that the guarantee ring is used as a shoulder on which the first cylindrical jacket can be supported.

In a further preferred embodiment of the invention, the length of the first and second retaining strap is dimensioned such that the threaded part can be lifted from a closed position after unscrewing it from the container neck and can be positioned in an open position in which the cover plate is in the open position on the outer narrowing and rests on the heel. The arrangement of the retaining straps enables the user to choose between two fixing positions or open positions in which the threaded part releases the pouring opening and is held on the container without wobbling. The threaded part can be pivoted along an axis of rotation on which the first end of the first retaining strap and the third end of the second retaining strap lie, until the cover plate faces the container neck. Then the threaded part can be braced on the container neck by the cover plate rests against the thread thread from the outside and the support ring. The retaining straps are tensioned in this second fixing position and hold the threaded part on the container neck without wobbling.

In a further particularly preferred embodiment of the invention, the first and second retaining straps are free of elastic deformation in the open position of the threaded part. The threaded part can be moved several times from the open position into the locking position and can consequently be screwed onto and off the container neck several times. The function of the closure cap does not decrease by opening and closing the threaded part several times.

It has proven to be advantageous if the closure cap can be pushed onto the bottle neck. The container can therefore be closed fully automatically and accordingly quickly and reliably with the closure cap after it has been filled.

Further advantages and features emerge from the following description of an exemplary embodiment of the invention with reference to the schematic representations. It shows, not to scale: Figure 1: a side view of an upper part of a container and a closure cap with a first and second retaining strap;

FIG. 2: a side view of the closure cap, the closure cap being unscrewed from the container neck of the container;

FIG. 3: the unscrewed closure cap in a top view;

FIG. 4: a side view of the container part and the closure cap, the closure cap being in an open position and being held under half of the container neck;

FIG. 5: a plan view of the container and the closure cap in the oven position;

FIG. 6: a detailed view of the guarantee ring in a further embodiment and

FIG. 7: a sectional view of the guarantee ring from FIG. 6 with visualized

Angles of inclination.

In FIGS. 1 to 5, a closure cap is shown which is designated as a whole with the reference numeral 11. The closure cap 11 is held captive on a container 13, in particular on a bottle 13. The closure cap 11 comprises a cylindrical threaded part 15, a guarantee ring 17 and a first and a second retaining strap 19a, 19b.

The threaded part 15 comprises a cover plate 21 and a first cylindrical jacket 23 with an open edge 25. An internal thread 27 is formed on the inside of the jacket 23. The container 13 comprises a container body 28 and a container neck 29 adjoining the container body 28. The container neck 29 is designed as a second cylindrical jacket. An external thread 31 is formed on the container neck 29, which cooperates with the internal thread 27. As a result, the threaded part 15 can be screwed onto the container neck 29 and unscrewed from this. The closure cap 11 closes the pouring opening 33, which is provided inside the container neck 29. The guarantee ring 17 is held in a form-fitting manner on the container neck 13. For this purpose, an annular projection 35 is formed on the outside of the container neck 29, which projections 37 (FIGS. 6 and 7), formed on the inside of the guarantee ring 17, can engage under. The guarantee ring 17 can be rotated relative to the container neck 29.

The first retaining strap 19a has a first end 39 and a second end 41. The first end 39 is firmly connected to the open edge 25. The second end 41 is firmly connected to the guarantee ring 17. As a result, the closure cap 11 is held captive on the container 13. Furthermore, the first retaining strap 19 has a first edge 43 and a second edge 45. The first edge 43 is connected to the open edge 25 with at least one first predetermined breaking web 47 and the second edge 45 is connected to the guarantee ring 17 with at least one second predetermined breaking web 49 releasably connected.

The second retaining strap 19b has a third end 51 and a fourth end 53. The third end 51 is firmly connected to the open edge 25. The fourth end 53 is firmly connected to the guarantee ring 17. As a result, the closure cap 11 is also held captive on the container 13. Furthermore, the second retaining strap 19b has a third edge 55 and a fourth edge 57. The third edge 55 is connected to the open edge 25 with at least a third predetermined breaking web 59 and the second edge 45 is connected to the guarantee ring with at least one fourth breaking web 61 17 releasably connected. In addition, the guarantee ring 17 is held on the open edge 25 with a plurality of guarantee webs 63. The guarantee bars are preferably arranged on the guarantee ring 17 at regular intervals. It goes without saying that the areas occupied by the first and second retaining straps 19a, 19b on the guarantee ring 17 are free of guarantee webs 63 because the predetermined breaking webs 47, 49, 59, 61, which act as guarantee webs, each form a connection between the open edge 25 and form guarantee ring 17.

It is preferred if the first and second retaining straps 19a, 19b each have a width between 2 mm and 3 mm so that they are sufficiently stable.

Since the closure cap 11 is rotationally symmetrical, it has a center point 65. The center point 65 lies in the imaginary plane between the open edge 25 and the guarantee ring 17. The retaining straps 19a, 19b or their ends have an arrangement on the guarantee ring 17 and on the open edge which enables the first and second retaining straps to be subjected to a pressure load when they are opened for the first time. For this purpose, before the closure cap 11 is opened for the first time, the first, second, third and fourth ends 39, 41, 51, 53 are arranged one after the other in increasing order on the circular path of the guarantee ring 17 counterclockwise when the internal thread 27 and the external thread 31 are designed as right-hand threads. The second and fourth ends 41, 53, which are connected to the guarantee strip 17, and the first and third ends 39, 51, which are connected to the threaded part 15, therefore alternate. In relation to the direction of rotation, the retaining straps are aligned in the same way. This means that, as already mentioned above, both retaining straps 19a, 19b are subjected to a pressure load during an initial opening and also with subsequent openings of the closure, because both retaining straps 19a, 19b are quasi compressed as a result of the rotary movement.

As can be seen from the figures, the first and third ends 39, 51 are essentially diametrically opposed. The same applies to the second end 41 and the fourth end 53. This symmetrical arrangement of the ends of the retaining straps 19a, 19b results in the threaded part 15 after unscrewing from the container neck 29 along the imaginary plane of symmetry between the second and fourth end 41, 53 can be pivoted to one side or the other next to the spout as desired. The threaded part 15 can therefore be tilted away to the left or right in order to expose the pouring opening 33. The axis of rotation 83 of the container neck 29 lies on the imaginary plane of symmetry.

The following defined opening angles between the ends of the retaining straps 19a, 19b are shown in FIG. Since FIG. 5 shows a top view of the closure cap 11, the opening angles are particularly easy to see. Although FIG. 5 shows that the retaining straps have been removed from their recesses 79, 81 on the guarantee ring 17, the ends of the recesses are essentially identical to the ends of the retaining straps. The first end 39 and the third end 51 close a first opening angle 67 of at least 170 degrees and at most 190 degrees and before given to at least 175 and at most 185 degrees with respect to the center point 65 as Vertex a. The second end 41 and the fourth end 53 enclose a second opening angle 69 of at least 170 degrees and at most 190 degrees and preferably of at least 175 and at most 185 degrees with respect to the center 65 as the apex.

The first end 39 and second end 41 enclose a third opening angle 71 of at least 110 degrees and at most 140 degrees and preferably of at least 120 and at most 130 degrees with respect to the center of the closure cap as the apex. The third end 51 and the fourth end 53 enclose a fourth opening angle 73 of at least 110 degrees and at most 140 degrees and preferably of at least 120 and at most 130 degrees with respect to the center point 65 as the vertex. It goes without saying that the sum of the first, second, third and fourth opening angles must be 67,69,71,73 360 degrees. By choosing the first, second, third and fourth opening angle, it is possible for the first and second retaining straps 19a, 19b to have a certain length which enables the functions of the closure cap described below.

The third and fourth opening angles 71, 73 are expediently the same size, which is synonymous with the fact that the first and second retaining straps 19a, 19b are of the same length. The first and second retaining straps 19a, 19b are preferably worked out of the guarantee ring 17 offset by 180 degrees.

First and second kink lines 75, 77 are formed at the first and third ends 39, 51, respectively. The first and the third end 39, 51 can act as a joint through the first and second kink lines 75, 77. Crease lines can also be provided at the second and fourth ends 41, 53.

A first and a second recess 79, 81 are provided on the guarantee ring 17. In the first and the second recess 79, 81, the first and the second retaining band 19a, 19b are received. This makes it possible to work out the first and second retaining straps 19a, 19b directly from the guarantee ring 17, for example by cutting out of the guarantee ring, or to provide them, for example by appropriately designing injection molds.

If the closure cap 11 has bounced onto the container neck 29, the pouring opening 33 is closed by the closure cap 11 and the closure cap 11 is located in a locked position. When the threaded part 15 is unscrewed from the container neck 29, the first, second, third and fourth predetermined breaking webs 47, 49, 59, 61 and the guarantee webs 63 break. The guarantee ring 17 rotates with the threaded part 15. During unscrewing, the first and second retaining straps 19a, 19b can straighten up. The first and the second end 39, 51 can act as a joint through the first and second fold lines 75, 77 (not shown). It is preferred if the second and fourth ends 41, 53 can also be bent, for example outwardly, because this simplifies the translational movement of the threaded part 15 and can take place in a more defined manner.

FIG. 4 shows how the threaded part 15 can be arranged on the container body 28 in the oven position. A shoulder 91 is formed on the container neck 29, which is formed below the guarantee ring 17 or is formed by the guarantee ring 17 itself. 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 part 15 is held in the open position on the first and second retaining straps 19a, 19b. In FIG. 4, the container body 28 is shown with a container shoulder 93. The container shoulder 93 represents the transition from the container neck 29 to the cylindrical part of the container body 28. The retaining straps 19a, 19b are dimensioned such that the open edge 25 can be pulled over the support ring 91 into the open position. In the open position, the threaded part 15 rests with the open edge 25 on the surface of the container shoulder 93. The first cylindrical jacket 23 rests on the support ring 91. The retaining straps 19a, 19b are preferably slightly tensioned in the open position. As a result, the threaded part 15 is pulled onto the support ring 91 and is clamped below the support ring 91. The support ring 91 prevents the threaded part 15 from tilting upwards as a result of the tension of the retaining straps 19a, 19b. Rather, the effect of the support ring 91 is that the open edge 25 is pressed against the container shoulder 93. As a result, the threaded part 15 is kept particularly stable in the open position. It is also conceivable that the first cylindrical jacket 23 rests against the guarantee ring 17 if there is no support ring. In this case, the guarantee ring 17 acts as a shoulder for the threaded part 15. As FIG. 4 shows, the axis of rotation of the container neck 83 and the axis of rotation 85 of the threaded part, established by the container shoulder 93, include an acute angle. The larger the angle, which can be at most 90 degrees; between the axes of rotation 83, 85, the greater the tensile force on the container shoulder 93. The smaller the angle between the two axes of rotation 83, 85, the greater the tensile force on the support ring 91.

In a second, non-illustrated manner of use, after unscrewing from the container neck 29, the threaded part can be rotated along the first and third ends 39, 53 such that the cover plate 21 is oriented in the direction of the container neck 29. The threaded part can then - similarly as explained above - be positioned on the container neck in such a way that the retaining straps 19a, 19b pull or tension the cover plate against the external thread 31 and the support ring 91.

The projections 37 can be designed according to the following description of the figures of FIGS. 6 and 7. This embodiment of the projections 37 is the content of the Swiss patent applications with the application numbers 01467/19 and 01695/19, whose priorities have been claimed and the content of which is hereby incorporated into the present patent application. Slits 95 are provided on the guarantee ring, distributed over the circumference of the guarantee ring 17. The slots 95 each have an upper edge 97 and a lower edge 99. The upper edge 97 is formed by an arcuate section of the guarantee ring 17. The lower edge 99 corresponds to the free edge of an inwardly inclined wall section 101. The lower edge 99 has a smaller radius than the guarantee ring 17 due to the internal inclination of the wall section 101 and can thereby be attached to an abutment (annular projection 35) of the container neck 29 when the threaded part 15 is unscrewed from the container neck 29. The abutment is implemented by the annular projection 35, which is formed below the external thread 31 on the container neck 29. When the threaded part 15 is unscrewed, the lower edge 99 engages the projection 35 in a form-fitting manner, as a result of which the guarantee ring 17 is reliably held on the annular projection 35 even with high axial forces. Each wall section 101 has a first section 103 and two second Teilab sections 105. The first subsection 103 represents an inwardly folded jacket section and is preferably flat. The second subsections 105 adjoin the inwardly facing sides of the first subsection 103 and connect them to the guarantee ring 17. The second subsections 105 can be curved or flat and face one another at an incline inward. The lower edge 99 of the slot 95 corresponds to the free edges of the first partial section 103 and the second partial sections 105 and lies in a plane 107, which is shown in FIG. The plane 107 is preferably oriented perpendicular to the axis of rotation 85 of the container neck 29. These described design features of the wall section 101 have the advantage that the wall section 101 can rest against the annular projection 35 with the entire lower edge 99 and does not yield upwards in the event of an axial tensile force. As a result, the guarantee ring 17 is held detachably on the projection 35 or can only be removed from the projection 35 with destruction. A movement of the first partial section 103 inward in the radial direction is prevented by providing the second partial sections 105. A movement of the first section 103 outwards in the radial direction is possible, however. This movement is flexible and the wall section 101 returns, after it has been pushed radially outward, back to its inwardly inclined basic position. This has the further advantage that the guarantee ring 17 can be easily removed from the mold and can be bounced onto the container neck 29 together with the threaded part 15 with little force. Demolding from an injection mold and bouncing onto the container neck 29 can take place due to the flexibility of the wall section 101 without the risk of the wall section 101 being damaged.

It is preferred if the inclined wall sections 101 have a wall thickness that is reduced compared to the rest of the guarantee ring 17. In the figure 7 it is shown that the area of the lower edge 99 has the smallest wall thickness. As a result, the flexibility of the wall section 101 described above is further improved radially outward. The wall thickness of the wall section 101 increases linearly starting from the lower edge 99 downwards. In FIGS. 6 and 7, the guarantee ring 17 is shown without the threaded part 15. In FIGS. 6 and 7 it can be clearly seen that an annular bead 109 is formed on the guarantee ring 17 above the slots 95, on which the upper edges 97 lie.

A first and a second angle of inclination 111, 113 are entered in FIG. The first angle of inclination 111 indicates the inclination of the first subsection 103 with respect to the plane of the lower edge 99. The first angle of inclination 111 has a size between 60 and 80 degrees and preferably between 65 and 75 degrees. The larger the first angle of inclination 111, the better the stability of the wall sections 101 against vertical forces or axial tensile forces caused by unscrewing the threaded part 15. However, the first angle of inclination 111 must not become too large, otherwise the ring-shaped one Projection 35 cannot be reached under sufficiently.

The second angle of inclination 113 indicates the inclination of the slot 95 relative to the plane of the lower edge 109. The straight connecting line 115, which represents the inclination of the slot 95, is a connection of the upper edge 97 with the lower edge 99 in a plane which is spanned by the axis of rotation 85 and the straight connecting line 115. The second angle of inclination 113 is enclosed by the connecting straight line 115 and the plane 107. The second angle of inclination 113 has a size between 30 and 50 degrees and preferably between 35 and 45 degrees. The greater the second angle of inclination 113, the easier it is for the guarantee ring 17 to be removed from the mold.

On the cover plate 21 of the threaded part 15 there is preferably an inwardly projecting inner cone 87 (FIG. 1), e.g. in the form of a sealing cylinder or a sealing ring, is formed. The inner cone 87 is designed to cooperate sealingly with the inner wall 89 of the Behäl terhalses 29 in the closed position. The closure cap 11 can therefore act as a so-called “cone sealer” and reliably seals the container neck 29.

The closure cap 11 is made of a plastic. Preferred plastics include PP and HDPE. Sealing cap

Container, bottle

Threaded part

Guarantee ring

First strap

Second tether

Cover plate of the threaded part

First cylindrical jacket

Open edge

inner thread

Container body

Container neck

External thread

Pouring opening

Annular projection

Ledges

First end of the first tether Second end of the first tether First edge of the first tether Second edge of the first tether First predetermined breaking web

Second predetermined breaking web

Third end of the second tether Fourth end of the second retaining band, third edge of the second retaining band, fourth edge of the second retaining band, third predetermined breaking web

Fourth predetermined breaking web

Guarantee bars

Center of the closure cap

First opening angle

Second opening angle

Third opening angle

Fourth opening angle

First narrowing

Second narrowing

First recess

Second recess

Axis of rotation of the container neck

Rotation axis of the threaded part

Inner cone

Inner wall

Support ring, paragraph

Container shoulder

Slots

Top edge

Lower edge

Wall section First part

Second sections

level

Ring bulge

First inclination angle Second inclination angle connecting straight line

Claims

Closure cap (11) for closing the pouring opening (33) of a Behäl age (13), having

a threaded cylindrical part (15) having an open edge (25) and an internal thread (27) which can usammenwirken with an external thread (31) of a container neck (29) of the container (13) _Z,

a guarantee ring (17) which is designed to be held on a projection (35) formed on the container neck (29),

a plurality of guarantee bars (63) which releasably connect the guarantee ring (17) to the open edge (25),

- A first retaining strap (19a) with a first and a second end (39,41) and a first and second edge (43,45), the first end (39) with the open edge (25) of the threaded part (15) is firmly connected and the second end (41) is firmly connected to the guarantee ring (17), and

a second retaining strap (19b) with a third and a fourth end (51,53) and a third and fourth edge (55,57), the third end (51) being fixed to the open edge (25) of the threaded part (15) is connected and the fourth end (53) is firmly connected to the guarantee ring (17)

characterized,

that the second end (41) is arranged on the circular path of the guarantee ring (17) essentially diametrically opposite the fourth end (53) before the threaded part (15) is opened for the first time.

Closure cap according to Claim 1, characterized in that before the threaded part is opened for the first time on the circular path of the guarantee ring, the first end is arranged essentially diametrically opposite the third end (51).

Closure cap according to claim 1 or 2, characterized in that before the closure cap is opened for the first time, the first, second, third and fourth End one after the other in increasing order on the circular path of the Garan tieringes are arranged counterclockwise if the internal thread and the external thread are designed as right-hand threads.

4. Closure cap according to one of the preceding claims, characterized in that the first edge (43) is releasably connected to the open edge (25) of the threaded part (15) with at least one first predetermined breaking web (47) and the second edge (45 ) is detachably connected with at least one second predetermined breaking web (49) with the Ga rantiering (17), and

that the third edge (55) is detachably connected with at least one third predetermined breaking web (59) with the open edge (25) of the threaded part (15) and the fourth

Edge (57) is releasably connected to at least one fourth predetermined breaking web (61) with the guarantee ring (17).

5. Closure cap according to one of the preceding claims, characterized in that in the closed state of the threaded part the first and the third end (39,51) have a first opening angle (67) of at least 170 degrees and at most 190 degrees and preferably of at least 175 and include a maximum of 185 degrees with respect to the center point (65) of the closure cap (11) as the apex and

the second and the fourth end (41,53) have a second opening angle (69) of at least 170 degrees and at most 190 degrees and preferably of at least 175 and at most 185 degrees with respect to the center (65) of the closure cap (11) as the apex lock in.

6. Closure cap according to one of the preceding claims, characterized in that the first and second ends (39,41) have a third opening angle (71) of at least 110 degrees and at most 140 degrees and preferably of at least 120 and at most 130 degrees with respect to the Include the center point (65) of the closure cap (11) as the apex.

7. Closure cap according to one of the preceding claims, characterized in that the third and fourth ends (51, 53) have a fourth opening angle (73) of at least 110 degrees and at most 140 degrees and preferably of include at least 120 and at most 130 degrees with respect to the center (65) of the closure cap (11) as the vertex.

8. Closure cap according to one of the preceding claims, characterized in that the third and fourth opening angles (71, 73) are of the same size, whereby the first and second retaining straps (19a, 19b) are of equal length.

9. Closure cap according to one of the preceding claims, characterized in that the cross section of the first and second retaining strap (19a, 19b) along the length of the first and second retaining strap (19a, 19b) is constant.

10. Closure cap according to one of the preceding claims, characterized in that the guarantee webs (63) are arranged at regular intervals along the open edge (25).

11. Closure cap according to one of the preceding claims, characterized in that the first, second, third and fourth predetermined breaking webs (47,49,59,61) at regular intervals along the first and second or the third and fourth edge (43, 45,55,57)) are arranged.

12. Closure cap according to one of the preceding claims, characterized in that the position of the guarantee ring (17) relative to the annular before jump (35) of the container neck (29) can be changed in the axial direction and in the circumferential direction.

13. Closure cap according to one of the preceding claims, characterized in that on the edge of the guarantee ring (17) facing the first and second retaining straps (19a, 19b) a first and second recess (79, 81) for receiving the first and second Retaining strap (19a, 19b) is provided.

14. Closure cap according to one of the preceding claims, characterized in that the first and / or the second end (39, 41) of the first retaining strap of the (19a) and the third and / or the fourth end (51, 53) of the second retaining band of (19b) can be bent along predefined folding lines (75,77).

15. Closure cap according to one of the preceding claims, characterized in that on the cover plate (21) of the threaded part (15) an inwardly protruding inner cone, for example in the form of a sealing cylinder or a sealing ring, is formed, which is designed to cooperate in a sealing manner with the inner wall of the container neck (29) in the closed position.

16. Closure cap according to one of the preceding claims, characterized in that the first and second retaining straps (19a, 19b) have a width between 3 mm and 7 mm and preferably a width between 4 mm and 5 mm.

17. Closure cap according to one of the preceding claims, characterized in that the closure cap (11) is designed to interact with a standardized container neck (29) with an external thread (31) and an annular protrusion (35).

18. Closure cap according to one of the preceding claims, characterized in that the closure cap (11) is made of a plastic material, preferably PP or HDPE.

19. Closure cap according to one of the preceding claims, characterized in that the threaded part (15), the guarantee ring (17), the first and second retaining band, the guarantee webs (64) and the at least first, second, third and fourth predetermined breaking web (47, 49,59,61) are made in one piece.

20. Closure cap according to one of the preceding claims, characterized in that the guarantee ring (17) distributed over the circumference arranged slots (95) with an upper edge (97) and a lower edge (99), wherein the upper edge (97) by a arcuate section of the

Guarantee ring (17) is formed and the lower edge (99) is formed by a radially inwardly inclined wall section (101) and that the lower edge (99) of each slot (95) forms projections (37), thereby engaging means are formed for a positive engagement with the annular projection (35).

21. Having container (13)

a container body (28),

a container neck (29) adjoining the container body (28), an external thread (31) formed on the container neck (29) and a closure cap (11) for closing a pouring opening (32) provided within the container neck (29),

having the closure cap (11)

a cylindrical threaded part (15) with an open edge (25) and an internal thread (27) which is connected to an external thread (31) of a container neck

Can usammenwirken (29) of the container (13) _Z,

a plurality of guarantee bars (64) which detachably connect the guarantee ring (17) to the open edge (25) and

- A first retaining strap (19a) with a first and a second end (39,41) and a first and second edge (43,45), the first end (39) with the open edge (25) of the threaded part (15) is firmly connected, the second end (41) is firmly connected to the guarantee ring (17), the first edge (43) is detachably connected to the open edge (25) of the threaded part (15) with at least one first predetermined breaking web (47) and the second edge (49) is detachably connected to at least one second predetermined breaking web (49) with the guarantee ring (17),

characterized,

that the closure cap is a closure cap (11) according to one of claims 1 to 16.

22. Container according to claim 21, characterized in that a shoulder (91) is formed on the container neck (29), which is formed below the guarantee ring (17) or is formed by the guarantee ring (17) and the length of the first and second Retaining strap (19a, 19b) is dimensioned such that the threaded part (15) from a closed position after unscrewing from the container neck

(29) can be lifted off and positioned below the shoulder (91) in an open position, the threaded part (15) being held in the open position on the first and second retaining straps (19a, 19b) with the open edge (25) on the loading container body (28) rests at least partially and rests against the shoulder (91). 23. Container according to claim 22, characterized in that the shoulder is a support ring (91) which is formed at the transition from the container neck (29) to the Behäl terkbody (28).

24. Container according to one of claims 22 or 23, characterized in that the length of the first and second retaining straps (19a, 19b) is dimensioned such that the threaded part (15) can be lifted from a closed position after unscrewing from the container neck (29) and can be positioned in an open position, in which the cover plate (21) in the open position rests against the external thread (28) and against the shoulder (91).

25. Container according to one of claims 21 to 24, characterized in that the first and the second retaining straps (19a, 19b) are free of elastic deformation in the open position of the threaded part (15). 26. Container according to one of claims 21 to 25, characterized in that the

Closure cap (11) can be pushed onto the bottle neck.