CH716856A2 - Container closure. - Google Patents

Abstract

The invention relates to a container closure (11) for closing the pouring opening of a container, comprising a screw cap (15) with a free edge (25) and a guarantee ring (17) which is connected to the free edge (25) of the casing via predetermined breaking webs (63) 15) is connected and has engagement means, a first arm (19a) with a first and a second arm end (39,41) wherein the first end (39) is firmly connected to the free edge (25) of the screw cap (15) and the second end (41) is firmly connected to the guarantee ring (17) and a second arm (19b) with a third and a fourth arm end (51,53), the third end (51) with the free edge (25) of the screw cap (15) is firmly connected and the fourth end (53) is firmly connected to the guarantee ring (17). The guarantee ring is an open ring (17) with a first and second ring end (20a, 20b), the second arm end (41) connecting to the first ring end (20a) and the fourth arm end (53) connecting to the second ring end (20b) and a tongue (65) is formed between the first and third arm ends (39, 41) at the free end (25) of the screw cap (15).

Description

Field of invention

The invention relates to a closure cap for closing the pouring opening of a container according to the preamble of claim 1 and a container with such a closure cap according to the preamble of claim 19.

State of the art

From the prior art in the field of plastic closure caps with a guarantee ring, closure caps are known which are held captive on the container and close its pouring opening. Such closure caps are also known which have two retaining straps which connect a threaded part of the closure cap to a security ring of the closure cap. The two retaining straps can act as a hinge, around which the threaded part of the guarantee ring or of the container to be closed can be folded away into an open position. With this solution, the handling of holding the unscrewed screw cap in the open position is not very self-explanatory. Furthermore, the holder is rather unstable in the unscrewed state, as a result of which the screw cap wobbles in the open position and makes pouring out the contents of the container more difficult.

In EP 1 124 734 A1 the possibility of a folding mechanism between the screw cap and the guarantee ring is realized in that the free edge of the screw cap is connected to the guarantee ring by two film hinges and a retaining strap adjoining the respective film hinge. A tab is formed on the free edge between the two hinges. In the unfolded state or in the open position, the tab can lock onto a thread of the container's external thread. This folding solution requires a complicated and accordingly expensive injection mold to manufacture. In addition, the tab is locked to a thread that is necessarily inclined, which means that the screw cap is unstable in the open position.

Finally, the above-described versions of hinged screw caps are in the way when drinking from the container.

Object of the invention

It is therefore the object of the present invention to propose a container closure which is as little in the way as possible when drinking from the container and whose screw cap is held firmly or wobbly on the container in the open position. In addition, there is a need of the user of the container that the transfer of the screw cap into the open position is as clear and self-explanatory as possible.

description

The object set is achieved in a container closure for closing a container by the features cited in the characterizing section of claim 1. Further developments and / or advantageous design variants are the subject of the dependent claims.

The invention is characterized in that the guarantee ring is an open ring with a first and second ring end, the second arm end at the first ring end and the fourth arm end at the second ring end and between the first and the third arm end a tongue is formed at the free end of the screw cap. Due to the open structure of the guarantee ring, there is enough space for the tongue to last as long as possible. Due to the long tongue, the screw cap can be as far away as possible from the container neck in its open position. The tongue accordingly functions as a spacer which, in the open position, separates the screw cap as far as possible from the container neck. As a result, the screw cap is not in the way of the user, in particular his lips and chin, when drinking from the container. As a result, the container closure is more user-friendly than container closures according to the prior art, which in their open position are situated much closer to the container neck.

In a particularly preferred embodiment of the invention, the length of the tongue is equal to the height of the guarantee ring. Since the tongue is formed in the free area between the ring ends, the entire height of the guarantee ring is available and the tongue can have a maximum length.

It proves expedient if the first end of the ring has a first lower corner and a first upper corner and the second end of the ring has a second lower corner and a second upper corner, the second arm end at the first lower corner and at the second lower corner connects to the fourth end of the arm. As a result, the two holding arms can be arranged at an angle, which improves their rotatability in the direction of the open position.

It proves to be advantageous if a first recess or recess is provided on the guarantee ring following the first ring end and then a second recess or recess is provided on the second ring end. This "weakening" of the guarantee ring at its ring ends also improves the ability of the holding arms to rotate in the direction of the open position.

In a further preferred embodiment of the invention, the first and second lower corners are offset in comparison to the first and second upper corner on the guarantee ring, so that the distance between the lower corners is greater than the distance between the upper corners. This offset of the lower corners away from the tongue also improves the rotatability of the support arms, since the lower corners impede the rotatability much less than if they were arranged directly under the upper corners.

Conveniently, the arms and the free edge enclose an angle between 15 and 45 degrees and preferably between 20 and 30 degrees. In this angular range, the inclination of the holding arms between the lower corners and the tongue is optimized.

It has proven to be particularly advantageous if the dimensions of the first and second holding arms are such that the predetermined breaking webs break when the container closure bounced onto the container is first opened before the arms are damaged. The holding arms are therefore dimensioned to be sufficiently stable in order not to be damaged by opening. At the same time, they are sufficiently flexible in order not to hinder the pivoting of the screw cap into the open position.

It is also preferred if the holding arms have a width which corresponds to at least 15% of the height of the guarantee ring. As a result of this dimensioning, the holding arms are sufficiently stable, but at the same time sufficiently flexible to enable the screw cap to be rotated unhindered.

In a preferred embodiment of the invention, a first or second web is formed between the first or second recess and the first or second ring end. The webs are dimensioned as narrow as possible in order to further improve the rotatability of the holding arms.

In a further preferred embodiment of the invention, the first and third arm ends are connected to the free edge and the tongue. Because part of the retaining arms is connected to the tongue, the part that is connected to the free edge of the screw cap can be shortened. This feature also serves to improve the rotatability of the holding arms.

In one embodiment of the invention, the engagement means are realized in that an inwardly folded retaining strap is formed from the first lower corner to the second lower corner in the circumferential direction of the guarantee ring on the circumferential edge facing away from the free edge. This type of engagement means for holding the guarantee ring on the container neck is widespread and accordingly mature.

It proves to be advantageous if the first and second lower corners include an opening angle of at least 60 degrees and at most 90 degrees and preferably of at least 70 and at most 80 degrees with respect to the center of the screw cap as the apex. This dimensioning leads to a length of the holding arms which enables the screw cap to be held stably in the open position in that the holding arms pull the tongue end onto the retaining ring and the tongue bottom onto the support ring. It is therefore preferred if the lengths of the tongue and of the first and second arms are dimensioned such that the arms are tensioned in the open position and the screw cap is held in the open position.

In a further particularly preferred embodiment of the invention, the first and second arm has a width between 3 mm and 7 mm and preferably a width between 4 mm and 5 mm. The holding arms thereby have constant elastic properties along their length, whereby a defined length of the holding arms can be determined, in which the screw cap can be held stable and wobble-free on the guarantee ring in its open position. In the open position, the first and second holding arms are pretensioned. The elastic pretensioning of the holding arms makes it possible that the screw cap can be unscrewed several times from the container neck and screwed onto it again and can be reliably held several times in the open position. The constant cross-section of the holding arms along their length prevents overstretching of the holding arms in the open position, in which case the elastic properties of the holding arms can be lost.

It is preferred if the predetermined breaking webs are arranged at regular intervals along the free edge, with the exception of the area of the holding arms and the tongue. The guarantee ring is therefore held in a sufficiently stable manner on the screw cap so that the closure cap can be pushed onto the container neck. The screw cap can also be unscrewed with constant force thanks to the even spacing of the predetermined breaking bars.

It has proven to be expedient if an inwardly protruding inner cone, e.g. in the form of a sealing cylinder or a sealing ring, is formed on the cover disk of the screw cap and 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 band 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 webs are torn off. In addition, the closure cap is not too high and can be joined together to form a seal with standardized container necks with an external thread.

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 produced with standard plastic materials, from which known closure caps with a guarantee ring are also produced.

In a further preferred embodiment of the invention, the screw cap, the guarantee ring, the first and second arm, the predetermined breaking webs and the tongue 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. The inner cone is preferably 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 distributed over the circumference arranged slots with an upper edge and a lower edge, the upper edge being formed by a circular arc-shaped portion of the guarantee ring and the lower edge by a radially inwardly inclined Wall portion is formed and the lower edge of each slot forms the projections, whereby engagement means are formed for a positive engagement with the retaining ring. Since the engagement means in the form of the inwardly inclined wall sections are not completely present on the guarantee ring and there are also slots, the shape 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 cannot be moved inward in the radial direction, as a result of which the guarantee ring is held on the retaining ring and can only be pulled over it when the guarantee ring is stretched along its circumference. The guarantee ring is held so tightly by the wall sections on the retaining ring that the predetermined breaking webs safely tear before the wall sections are secured. In the radial outward direction, however, the wall sections are flexible or movable. 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. An expansion of the guarantee ring, which can lead to permanent damage to the closure cap, is largely prevented during demolding and bouncing.

Another 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 description above.

In a preferred embodiment of the invention, a support ring is formed at the transition from the container neck to the container body and the free end of the tongue is supported in the open position on the retaining ring and the tongue is supported on the support ring. The additional contact of the tongues on the support ring in the open position makes the holder more stable because there are two support points.

In a particularly preferred embodiment of the invention, the lengths of the tongue and of the first and second arms are dimensioned such that the arms are tensioned in the open position and the screw cap is held in the open position. In this variant, the screw cap is held in the open position in a particularly stable manner. The effect of this embodiment has already been described above.

Further advantages and features emerge from the following description of three exemplary embodiments of the invention with reference to the schematic representations. These show in a representation not true to scale: FIG. 1: a side view of a container closure, the closure cap being in a closed position; FIG. 2: an axonometric top view of the container closure from FIG. 1; FIG. 3: an axonometric view from below of the container closure from FIG. 1; FIG. 4: an axonometric view of the container closure which is placed on a container neck; FIG. 5: a side view of the container closure in an open position; FIG. 6: an axonometric top view of the opened container closure from FIG. 6; FIG. 7: a side view of the opened container closure and placed on a container neck; FIG. 8: an axonometric top view of the opened container closure from FIG. 7; FIG. 9: a detailed view of the guarantee ring and FIG. 10: a sectional view of the guarantee ring from FIG. 9 with visualized angles of inclination.

In FIGS. 1 to 8, a container closure is shown, which is designated as a whole by the reference numeral 11. The closure cap 11 is held captive on a container 13, in particular on a bottle 13. The container 13 is indicated in FIGS. 4, 7 and 8. The closure cap 11 comprises a screw cap 15, a guarantee ring 17 and a first and a second arm 19a, 19b. The guarantee ring 17 is shaped as an open ring and therefore has first and second ring ends 20a and 20b. The first and second arms 19a, 19b connect to the first and second ring ends 20a, 20b and connect the guarantee ring 17 to the screw cap 15.

The screw cap 15 comprises a cover plate 21 and a first cylindrical jacket 23 with a free 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, which cooperates with the internal thread 27, is formed on the container neck 29. As a result, the screw cap 15 can be screwed onto and unscrewed from the container neck 29. The closure cap 11 closes the pouring opening 33, which is provided inside the container neck 29. The closure cap 11 is designed to interact with a standardized container neck 29 with an external thread 31 and a retaining ring 35.

The guarantee ring 17 is held in a form-fitting manner on the container neck 13. For this purpose, a retaining ring 35 is formed on the outside of the container neck 29, which can be gripped under by projections 37 formed on the inside of the guarantee ring 17 (FIGS. 9 and 10). The guarantee ring 17 can be rotated relative to the container neck 29.

The first arm 19a has a first end 39 and a second end 41. The first end 39 is firmly connected to the free edge 25. The second end 41 is firmly connected to the guarantee ring 17 at its first ring end 20a. As a result, the container closure 11 is held captive on the container 13.

The second arm 19b has a third end 51 and a fourth end 53. The third end 51 is firmly connected to the free edge 25. The fourth end 53 is firmly connected to the guarantee ring 17 at its second ring end 20b. As a result, the closure cap 11 is also held captive on the container 13.

The guarantee ring 17 is held on the free edge 25 with a plurality of predetermined breaking webs 63, which break when the screw cap 15 is unscrewed from the container neck 29. The predetermined breaking webs 63 are preferably arranged at regular intervals on the guarantee ring 17.

It is preferred if the first and the second arm 19a, 19b have a width between 4 mm and 5 mm, or have a width which corresponds to at least 15% of the height of the guarantee ring, so that they are sufficiently stable.

According to FIGS. 1 to 4, the screw cap 15 is in a closed position in which it is bounced or screwed onto the container neck 29. When unscrewing from the container neck 29, the first and second arms 19a, 19b are pulled upward in the axial direction and the arms are also elastically stretchable so that the screw cap 15 can be unscrewed from the container neck 29 and folded away. A tongue 65 is formed between the first end 39 of the first arm 19a and the third end 51 of the second arm 19b, the length of which is preferably the height of the guarantee ring 17. The tongue 65 has a pulling end 66. Because the guarantee ring 17 is open, there is sufficient space for the tongue 65 so that it has a maximum length. Due to the length of the tongue 65, the screw flap 15 can be opened particularly wide and held or fixed by the tongue in this wide open position. Due to the long tongue 65, the screw cap 15 is further spaced from the container neck 29 in the open position than if the tongue 65 were shorter. In the open position, the tongue end 66 rests on the retaining ring 35 and the tongue 65 rests on a support ring 72. The support ring 72 is formed at the transition from the container neck 29 to the container body 28.

The first ring end 20a has a first lower corner 67 and a first upper corner 69. The second ring end 20b has a second lower corner 71 and a second upper corner 73. The second arm end 41 connects to the first lower corner 69 and the fourth arm end 53 connects to the second lower corner 71.

Subsequent to the first ring end 20a, a first recess or recess 75 is provided on the guarantee ring 17 and a second recess or recess 77 is subsequently provided on the second ring end 20b. A first and second web 79, 81 are formed on the guarantee ring 17 between the depressions 75, 77 and the ring ends 20a, 20b.

The first and second lower corners 67, 71 are offset in comparison to the first and second upper corner 69, 73 on the guarantee ring, so that the distance between the lower corners is greater than the distance between the upper corners.

The recesses 75.77, together with the offset lower corners 67.71 and the webs 79.81, allow the holding arms 19a, 19b to be rotated outwards when the screw cap 15 is rotated into the open position. The holding arms 19a, 19b extend obliquely upwards from the lower corners 67, 71 to the free edge 25. They preferably form an angle 82 between 20 and 30 degrees with the free edge 25. In addition to the open ring structure, this inclination of the holding arms contributes to the fact that the tongue 65 can be made as long as possible. It is preferred if the first and third arm ends 39, 51 are connected to the free edge 25 and the tongue 65. As a result, the rotatability of the holding arms when the screw cap 15 is pivoted into the open position is improved even further.

The first and second lower corners 67, 71 close an opening angle 85 of preferably at least 70 and at most 80 degrees with respect to the center point 83 of the screw cap 15 as the apex. This size of the opening angle 85 gives the holding arms 19a, 19b an optimal length for the pivoting of the screw cap 15.

When the screw cap 15 is transferred from its unscrewed position into its open position, the first and second holding arms 19a, 19b act as a hinge around which the screw cap 15 can be folded into the open position. The length of the first and second holding arms 19a, 19b is such that the tongue 65, in the open position, is pulled into the lower corner which is formed between the holding ring 35 and the container neck 29. In the open position, the first and second holding arms 19a, 19b are preferably stretched or elastically stretched. So that the screw cap 15 remains in the open position and does not fold back, the tongue 65 is pulled onto the retaining ring 35 and the support ring 72 through the retaining arms 19a, 19b.

If the closure cap 11 is bounced onto the container neck 29, the pouring opening 33 is closed by the closure cap 11 and the closure cap 11 is in the closed position. When the screw cap 15 is unscrewed from the container neck 29, the predetermined breaking webs 63 break. The holding arms 19a, 19b are sufficiently dimensioned in such a way that they remain undamaged when unscrewed. The guarantee ring 17 rotates with the screw cap 15. During the unscrewing, the first and second holding arms 19a, 19b can stand up.

As already described above, the screw cap 15 is folded into the open position after it has been unscrewed from the container neck 29 in that the tongue 65 is latched onto the retaining ring 35. By choosing the opening angle 85, the first and second holding arms 19a, 19b have a length which enables the screw cap 15 to be unscrewed from the container neck 29 and held in the open position. The length of the first and second holding arms 19a, 19b must be precisely coordinated. If the length of the holding arms is too long, the screw cap 15 is not held firmly enough over the tongue 65. If the length of the holding arms is too short, the screw cap 15 snaps back from the open position and prevents the filling material from being poured out of the pouring opening 33.

In the open position, the screw cap 15 is held captive on the container 13 and is fixed to the container neck 29 in such a way that it does not protrude into the pouring opening 33 when liquid is poured out of the container 13. The first and second retaining straps 19a, 19b make it possible for the screw cap 15, after it has been unscrewed from the container neck 29, to be moved into the open position in a positively guided folding movement. Due to the positive guidance and the tongue 65, there is only one open position and not several. The length and the cross section of the first and second holding arms 19a, 19b, respectively, are preferably dimensioned such that the first and second holding arms 19a, 19b are elastically tensioned in the open position of the screw cap 15. As a result, in the open position, the screw cap 15 is pulled onto the container neck 29 and the retaining ring 35 and is held on this without wobbling. The elastic pretensioning of the first and second holding arms 19a, 19b also makes it possible that the screw cap 15 can be transferred several times from the open position into the closed position and vice versa. As a result, the container 13 can be opened and closed several times and the screw cap 15 is held stable and wobble-free in the open position every time it is opened.

The projections 37 can be designed in accordance with the following description of the figures of FIGS. 9 and 10. This embodiment of the projections 37 is the content of the Swiss patent applications with the application numbers 01467/19 and 01695/19, the priorities of which have been claimed and the content of which is hereby incorporated into the present patent application. Slits 97 are provided on the guarantee ring, distributed over the circumference of the guarantee ring 17. The slots 97 each have an upper edge 99 and a lower edge 101. The upper edge 99 is formed by an arcuate section of the guarantee ring 17. The lower edge 101 corresponds to the free edge of an inwardly inclined wall section 103 in the radial direction. The lower edge 101 has a smaller radius than the guarantee ring 17 due to the inner inclination of the wall section 103 and can therefore strike an abutment (retaining ring 35) of the container neck 29 if the screw cap 15 is unscrewed from the container neck 29. The abutment is realized by the retaining ring 35, which is formed below the external thread 31 on the container neck 29. When the screw cap 15 is unscrewed, the lower edge 99 engages the projection or the retaining ring 35 in a form-fitting manner, as a result of which the guarantee ring 17 is reliably held on the retaining ring 35 even with high axial forces.

Each wall section 101 has a first section 105 and two second sections 107. The first sub-section 105 represents a jacket section which is folded inward and is preferably of planar design. The second sub-sections 107 adjoin the inwardly facing sides of the first sub-section 105 and connect this to the guarantee ring 17. The second sub-sections 107 can be curved or flat and face one another obliquely inward. The lower edge 101 of the slot 97 corresponds to the free edges of the first section 105 and the second section 107 and lies in a plane 109, which is shown in FIG. The plane 109 is preferably oriented perpendicular to the axis of rotation 110 of the container neck 29. These described design features of the wall section 103 have the advantage that the wall section 103 can rest with the entire lower edge 101 on the annular projection 35 and does not yield in the manner of a barb when an axial tensile force is applied upwards. As a result, the guarantee ring 17 is permanently held on the retaining ring 35 or can only be removed from the retaining ring 35 with destruction. A movement of the first subsection 105 inward in the radial direction is prevented by the provision of the second subsections 107. However, a movement of the first partial section 105 outward in the radial direction is possible. This movement is flexible and the wall section 103 returns to its inwardly inclined basic position after it has been pressed radially outward. 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 screw cap 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 103 without the risk of the wall section 103 being damaged.

It is preferred if the inclined wall sections 103 have a wall thickness that is reduced compared to the rest of the guarantee ring 17. In FIG. 10 it is shown that the area of the lower edge 101 has the smallest wall thickness. As a result, the flexibility of the wall section 103 described above is further improved radially outward. The wall thickness of the wall section 103 increases linearly downwards starting from the lower edge 101.

In FIGS. 9 and 10, the guarantee ring 17 is shown without the screw cap 15. It can be clearly seen in FIGS. 9 and 10 that an annular bead 111 is formed on the guarantee ring 17 above the slots 97, on which the upper edges 99 lie.

In FIG. 10, a first and a second angle of inclination 113, 115 are entered. The first angle of inclination 113 indicates the inclination of the first subsection 105 with respect to the plane of the lower edge 101. The first angle of inclination 113 has a size between 60 and 80 degrees and preferably between 65 and 75 degrees. The larger the first angle of inclination 113, the better the stability of the wall sections 103 against vertical forces or axial tensile forces caused by unscrewing the screw cap 15. However, the first angle of inclination 113 must not be too large, since otherwise the retaining ring 35 will not be sufficient can be undercut.

The second angle of inclination 115 indicates the inclination of the slot 97 relative to the plane of the lower edge 111. The straight connecting line 117, which represents the inclination of the slot 97, is a connection of the upper edge 99 with the lower edge 101 in a plane which is spanned by the axis of rotation 110 and the straight connecting line 117. The second angle of inclination 115 is enclosed by the connecting straight line 117 and the plane 109. The second angle of inclination 115 has a size between 30 and 50 degrees and preferably between 35 and 45 degrees. The greater the second angle of inclination 115, the easier it is for the guarantee ring 17 to be removed from the mold.

An inwardly protruding inner cone 87 (FIG. 1), for example in the form of a sealing cylinder or a sealing ring, is preferably integrally formed on the cover disk 21 of the screw cap 15. The inner cone 87 is designed to cooperate in a sealing manner with the inner wall 89 of the container neck 29 in the closed position. The container closure 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. The screw cap 15, the guarantee ring 17, the first and second holding arms 19a, 19b, the predetermined breaking webs 64 and the tongue are produced in one piece, preferably in an injection mold.

Legend:

11 container closure 13 container, bottle 15 screw cap 17 guarantee ring, open ring 19a first arm 19b second arm 20a first ring end 20b second ring end 21 cover disc of screw cap 23 first cylindrical jacket 25 free edge 27 internal thread 28 container body 29 container neck 31 external thread 33 pouring opening 35 Retaining ring 37 Projections, engagement means 39 First end of the first arm 41 Second end of the first arm 51 Third end of the second arm 53 Fourth end of the second arm 63 Breaking webs 65 Tongue 66 Tongue end 67 First lower corner 69 First upper corner 71 Second lower corner 72 Support ring 73 Second upper corner 75 First recess 77 Second recess 79 First web 81 Second web 82 Angle 83 Center point of the closure cap 85 Opening angle 87 Inner cone 89 Inner wall 97 Slits 99 Upper edge 101 Lower edge 103 Wall section 105 First section 107 Second section 109 Plane 110 Rotation axis 111 Ring bead 113 First angle of inclination 115 Second angle of inclination 117 connecting straight line

Claims (21)

1. Container closure (11) for closing the pouring opening (33) of a container (13), having - A screw cap (15) with a free edge (25), a first cylindrical jacket (23), a cover disk (21) adjoining the jacket (23) and an internal thread (27) formed on the inside of the jacket (23), which can interact with an external thread (31) of a container neck (29) of the container (13), - A guarantee ring (17) which is connected to the free edge (25) of the casing (15) via predetermined breaking webs (63) and has engagement means (37) which enable positive engagement in an abutment arranged in the region of the container neck (23) are designed in the form of a retaining ring (35), - A first arm (19a) with a first and a second arm end (39, 41) wherein the first end (39) is firmly connected to the free edge (25) of the screw cap (15) and the second end (41) to the Guarantee ring (17) is firmly connected and - A second arm (19b) with a third and a fourth arm end (51,53), the third end (51) being firmly connected to the free edge (25) of the screw cap (15) and the fourth end (53) to the guarantee ring (17) is firmly connected, wherein the screw cap (15) can be folded from a closed position in which it closes the pouring opening (33) into an open position in which it completely exposes the pouring opening (33) and vice versa, characterized in that the guarantee ring is an open ring ( 17) with a first and second ring end (20a, 20b), the second arm end (41) being connected to the first ring end (20a) and the fourth arm end (53) being connected to the second ring end (20b) and between the first and the third arm end (39,41) a tongue (65) is formed on the free end (25) of the screw cap (15). 2. Container closure according to claim 1, characterized in that the length of the tongue (65) is equal to the height of the guarantee ring (17). 3. Container closure according to claim 1 or 2, characterized in that the first ring end (20a) has a first lower corner (67) and a first upper corner (69) and the second ring end (20b) has a second lower corner (71) and a second upper corner (73), the second arm end (41) adjoining the first lower corner (71) and the fourth arm end (53) adjoining the second lower corner (71). 4. Container closure according to one of the preceding claims, characterized in that a first recess (77) or recess (75) is provided on the guarantee ring (17) adjoining the first ring end (20a) and then on the second ring end (20b) a second recess (77) or recess (77) is provided. 5. Container closure according to claim 3 or 4, characterized in that the first and second lower corner (67,71) compared to the first and second upper corner (69,73) on the guarantee ring (17) are offset so that the distance of the lower corners (67,71) is greater than the distance between the upper corners (69,73). 6. Container closure according to one of the preceding claims, characterized in that the arms (19a, 19b) and the free edge (25) enclose an angle (82) between 15 and 45 degrees and preferably between 20 and 30 degrees. 7. Container closure according to one of the preceding claims, characterized in that the dimensions of the first and second holding arms (19a, 19b) are such that the predetermined breaking webs (63) when the container closure (11) bounced onto the container (13) is opened for the first time. break before the arms (20a, 20b) are damaged. 8. Container closure according to one of the preceding claims, characterized in that the holding arms (19a, 19b) have a width which corresponds to at least 15% of the height of the guarantee ring (17). 9. Container closure according to one of claims 4 to 8, characterized in that between the first or second recess (75,77) and the first or second ring end (20a, 20b) a first or second web (79,81) is trained. 10. Container closure according to one of the preceding claims, characterized in that the first and third arm ends (39, 51) are connected to the free edge (25) and the tongue (65). 11. Container closure according to one of claims 3 to 10, characterized in that the first and second lower corners (67,71) have an opening angle (85) of at least 60 degrees and at most 90 degrees and preferably of at least 70 and at most 80 degrees with respect to the Include the center point (83) of the screw cap (15) as the apex. 12. Container closure according to one of the preceding claims, characterized in that the lengths of the tongue (65) and the first and second arms (19a, 19b) are dimensioned such that the arms (19a, 19b) are tensioned in the open position and the screw cap (15) is held in the open position. 13. Container closure according to one of the preceding claims, characterized in that an inwardly protruding inner cone (87), for example in the form of a sealing cylinder or a sealing ring, is formed on the cover plate (21) of the screw cap (15), which is designed with the inner wall of the container neck (29) to cooperate in a sealing manner in the closed position. 14. Container closure according to one of the preceding claims, characterized in that the first and second arms (19a, 19b) have a width between 3 mm and 7 mm and preferably a width between 4 mm and 5 mm. 15. Container closure 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 retaining ring (35). 16. Container closure according to one of the preceding claims, characterized in that the closure cap (11) is made of a plastic material, preferably PP or HDPE. 17. Container closure according to one of the preceding claims, characterized in that the screw cap (15), the guarantee ring (17), the first and second arms (19a, 19b), the predetermined breaking webs (64) and the tongue (65) are made in one piece . 18. Container closure according to one of the preceding claims, characterized in that the guarantee ring (17) has slots (95) distributed over the circumference with an upper edge (97) and a lower edge (99), the upper edge (97) being shaped like an arc of a circle extending portion 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), whereby engagement means are formed for a positive engagement with the retaining ring (35). 19. 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 container closure (11) for closing a pouring opening (33) provided inside the container neck (29), the container closure (11) having - A screw cap (15) with a free edge (25), a first cylindrical jacket (23), a cover plate adjoining the jacket (21) and an internal thread (27) formed on the inside of the jacket (23), which is connected to a External thread (31) of a container neck (29) of the container (13) can interact, - A guarantee ring (17) which is connected to the free edge (25) of the casing (23) via predetermined breaking webs (63) and has engagement means (37) which enable a positive engagement in an abutment arranged in the region of the container neck (29) are designed in the form of a retaining ring (35), - A first arm (19a) with a first and a second arm end (39, 41), the first end (39) being firmly connected to the free edge (25) of the screw cap (15) and the second end (41) being connected to it the guarantee ring (17) is firmly connected and - A second arm (19b) with a third and a fourth arm end (51,53), the third end (51) being firmly connected to the free edge (25) of the screw cap (15) and the fourth end (53) to the guarantee ring (17) is firmly connected, wherein the screw cap (15) can be folded from a closure position in which it closes the pouring opening (33) into an open position in which it completely exposes the pouring opening (33) and vice versa, characterized in that the closure cap has a closure cap (11 ) according to one of claims 1 to 18. 20. A container according to claim 19, characterized in that a support ring (72) is formed at the transition from the container neck (29) to the container body (28) and the free end (66) of the tongue (15) is in the open position on the The retaining ring (35) is supported and the tongue (65) is supported on the support ring (72). 21. Container according to claim 19 or 20, characterized in that the lengths of the tongue (65) and of the first and second arms (19a, 19b) are dimensioned such that the arms (19a, 19b) are tensioned in the open position and the screw cap (15) is held in the open position.