EP3938289B1 - Closure cap for closing a container - Google Patents

Description

field of invention

The invention relates to a closure cap for closing a container according to the preamble of claim 1 and a container with such a closure cap according to the preamble of claim 18.

State of the art

Closure caps are known from the prior art in the field of plastic closure caps with a tamper-proof band, which are held captively 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.

The DE 24 30 775 A1 discloses such a captive closure cap. The cap consists of a screwable upper part and a lower collar, which grips behind a bead on the container mouth. The threaded upper part of the cap is connected to the lower collar by an easily tearable cylindrical tongue. This tongue extends over the entire perimeter and is connected to the upper part and the lower collar by a row of upper and lower connecting teeth respectively. This cylindrical tongue is interrupted at one point on the circumference so that it has two ends, one fixed to the screwable cap part and the other fixed to the lower collar. The connecting prongs of the top and bottom rows tear in an undefined manner while the cap is being screwed on. As a result, after unscrewing, prongs on the upper and lower rows are partially torn and partially still connected to the cap part and the lower collar. When pouring liquid, the dangling cap on the container can be a nuisance as it can protrude into the flow of liquid and cause liquid spillage.

In the WO 2009/002057 A2 a captive closure cap according to the preamble of claim 1 is also disclosed.

The cap consists of a screwable upper part and a lower collar that grips behind a bulge on the container mouth. The top is held to the bead with first and second tethers. In addition, the upper part has a first holding means which, when the upper part is in the open state, can latch onto a second holding means formed on the bead. As a result, the upper part is held stably in its open position on the bead.

object of the invention

It is therefore an object of the invention to prevent the disadvantages described above by creating a captive closure cap which is not a hindrance to any use of the container to be closed.

Description

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

The invention features a first tether having a first and a second end and a first and second edge, the first end being fixed to the open edge of the threaded portion, the second end being fixed to the anti-tamper ring, the first edge to at least one first predetermined breaking web is detachably connected to the open edge of the threaded part and the second edge is detachably connected to at least one second predetermined breaking web with the guarantee ring, and a second retaining strap with a third and a fourth end and a third and fourth edge, wherein the third end is firmly connected to the open edge of the threaded part, the fourth end is firmly connected to the anti-tamper ring, the third edge is detachably connected to the open edge of the threaded part by at least one third predetermined breaking bar, and the fourth edge is connected to the open edge of the threaded part by at least one fourth predetermined breaking bar The guarantee ring is releasably connected, the first and the third end enclosing a first opening angle of at least 110 degrees and at most 140 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 include a second include an opening angle of at least 110 degrees and at most 135 degrees and preferably at least 117 and at most 135 degrees with respect to the center point of the closure cap as the vertex. The center of the cap is in the plane between the open rim and the guarantee ring. By choosing the first and the second opening angle, the length of the first and the second retaining strap and their position along the Precisely determine the guarantee ring so that the following functions are fulfilled regardless of the diameter of the closure cap: The first and second retaining straps have a length which also allows the threaded part to be unscrewed from the container neck. Thereafter, the length of the tethers allows the threaded portion to be translated away from the pouring spout and down the container neck to an open position. This translational movement is provided by the provision of two retaining straps positively guided and the threaded part is forced into an open position. In the open position, the threaded part is held captive on the anti-tamper ring or the container neck. In the open position, the bottom of the threaded portion has the same orientation as in its screwed-on position to the container finish, but translationally offset against the outer wall of the container finish. In addition, the first and second retaining straps prevent the threaded portion from protruding into the pouring opening 33 when filling is poured out.

The first and second end 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 vertex. 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 ends 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 their 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 tethers allows translational constrained movement after the threaded portion is unthreaded from the container finish. The tethers allow movement to the open position of the threaded portion in only one direction. Accordingly, there is only one open position for the threaded part.

It is preferred if the first and the second retaining strap are arranged symmetrically on the anti-tamper ring with respect to a plane of symmetry which runs through the axis of rotation of the threaded part. It is also preferred that the first, second, third and fourth end have equal normal distances to the plane of symmetry. This means that the first and second tethers on the guarantee ring are offset by 180 degrees. As a result, when the threaded part is unscrewed, the first and second retaining straps can slide along the container neck and be stretched without hindrance.

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. As a result, the retaining straps have constant elastic properties along their length, as a result of which a defined length of the retaining straps can be determined at which the threaded part can be held on the container in a stable and wobble-free manner in its open position. In the open position, the first and second tethers are pretensioned. The elastic prestressing of the retaining straps makes it possible for the threaded part to be unscrewed from the container neck and screwed back onto it several times and to be reliably held several times in the open position. The constant cross-section of the tethers along their length prevents overstretching of the tethers in the open position.

In a further preferred embodiment of the invention, a first or a second constriction of the cross section of the first or the second retaining strap is provided at the second or the fourth end, whereby the second or the fourth end can act as a joint. The movement of the first and second retaining straps during the transfer of the threaded part from the closed position to the open position is facilitated by this joint function or is defined in a direction of rotation. It is also conceivable that the first and the third end have a joint function, so that the first and the second retaining strap can be moved like levers with two pivot points during the movement of the threaded part. For example, the first and third ends may be hingedly attached to the open edge.

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 threaded part so that the closure cap can be pressed onto the container neck. The threaded part can also be unscrewed with even force due to the even spacing of the guarantee bars.

The first, second, third and fourth predetermined breaking webs are expediently arranged at equal 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 to be able to be pressed onto the container neck. In addition, the broken predetermined breaking bars and guarantee bars indicate that the threaded part has already been twisted in relation to the container neck and is no longer originally sealed.

In a further particularly preferred embodiment of the invention, the position of the guarantee ring relative to the preferably ring-shaped projection of the container neck can be changed 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 threaded part 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 threaded part is turned, the first and second retaining straps only experience an axial force when the threaded part 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 strap. 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.

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 straps can each act like a lever with two pivot points. The fold lines also make it possible for the first and second retaining straps not to be bent or kinked at random positions in the open position, but rather precisely at the fold 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 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 bottom of the threaded part, which is designed to interact in a sealing manner 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 of between 3 mm and 7 mm and preferably a width of 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 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 joined together 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 manufactured using standard plastic materials from which known closure caps with a guarantee ring are also manufactured.

In a further preferred embodiment of the invention, the threaded part, the guarantee ring, the retaining strap and the at least one first and second predetermined breaking element are produced in one piece. As a result, the closure cap can be produced in an injection mold without further processing steps being necessary in order to form the first and second retaining band. 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 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 by a radial section inwardly inclined wall portion and the lower edge of each slot forms the projections, whereby engagement means are formed for positive engagement with the annular projection. 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 cannot move inward in the radial direction, as a result of which the anti-tamper ring is held on the annular projection and can only be pulled over it when the anti-tamper ring is stretched along its circumference. The anti-tamper ring is held by the wall sections on the annular projection so firmly that the predetermined breaking elements are certain to tear before the holding of the wall sections is overcome. 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.

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 above description.

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 in such a way that the threaded part moves out of a closed position after unscrewing it from the container neck can be lifted and positioned below the shoulder in an open position, the threaded part being held in the open position on the first and second retaining straps, with the open edge resting at least partially on the container body and lying against the shoulder. The threaded part 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, thereby providing a support for the threaded part at the transition is created. Due to the support on the shoulder and the container body, the threaded part no longer has any freedom of movement and is therefore held particularly stable and free of wobbling 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 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 threaded part. 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 first cylindrical jacket of the threaded part to be supported on the shoulder. It is also conceivable that the guarantee ring is used as a shoulder on which the first cylindrical shell can be supported.

In a further particularly preferred embodiment of the invention, at least one first depression is provided on the support ring in the radial direction, as a result of which a first holding side with a first corner and a second holding side with a second corner are formed on the support ring, the first and second corners being at the Transition from the first and second holding side to the open edge of the support ring are present. The jacket of the threaded part can bear against the support ring at two points by providing the recess when it is pulled by the first and second retaining band onto the support ring in the open position or is clamped on it. The shell abuts the edge of the support ring at a first point at a first corner of the first support side. At a second point, the casing rests against the edge of the support ring at a second corner of the second holding side. As a result, the threaded part is held on the container in a stable and wobble-free manner in the open position. If several first indentations are provided, they can serve to guide the retaining straps or to hold them in a defined position in the open position of the threaded part. This further improves the stability of the threaded part in the open position.

In a further preferred embodiment of the invention, the at least one first depression is V-shaped or U-shaped. The V or U shape is with little effort manufacturable and ensures that the open edge of the threaded part rests stably at two points, namely the first and the second corner. The angular size of the first and second corner is particularly advantageous in the case of a V- or U-shaped recess in order to reliably hold the threaded part. The first indentation can have a depth up to the approach of the support ring on the container neck.

In a further preferred embodiment, a plurality of second indentations is provided on the support ring and these second indentations are arranged symmetrically with respect to a plane of symmetry together with the first and second retaining band, the plane of symmetry running through the axis of rotation of the threaded part. The second depressions are preferably hook-shaped. Due to their hook-shaped design, the second depressions are particularly suitable for fixing the retaining straps when the threaded part is in the open position. The straps can hook into the second indentations. The position of the possible open positions is clearly specified by the symmetrical arrangement with respect to the plane of symmetry.

The length of the first and second retaining strap is expediently dimensioned such that the threaded part can be lifted from a closed position after unscrewing it from the container neck and can be positioned next to the container neck in an open position and is held on the first and second retaining strap in the open position. As already explained above, the first and second retaining straps allow a joint function or a lever function due to their defined length and their defined position on the guarantee ring and the threaded part, whereby the threaded part can be translated to a defined open position and in this open position to the container neck is held.

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

The axis of rotation of the threaded part and the axis of rotation of the container neck are expediently essentially parallel when the threaded part is in the open position. As a result, the threaded part is in the open position in a position in which it does not protrude beyond the container neck and also does not protrude into the pouring opening. The threaded part therefore does not interfere with the use of the container, although it is captively held on it.

It proves to be advantageous if the length of the first and second retaining strap is dimensioned in such a way that the axial orientation of the threaded part is essentially identical in the open position and in the closed position. After unscrewing it from the container neck, the threaded part can therefore be transferred into the open position by means of a forced translational movement.

It proves to be advantageous if the closure cap can be snapped onto the bottle neck. After being filled, the container can therefore be closed with the closure cap fully automatically and accordingly quickly and reliably.

Figur 1:

eine isometrische Ansicht einer Verschlusskappe von schräg unten in einer ersten Ausführungsform;

Figur 2:

eine Seitenansicht der Verschlusskappe aus Figur 1;

Figur 3:

eine Seitenansicht der Verschlusskappe in einer zweiten Ausführungsform;

Figur 4:

eine Seitenansicht der Verschlusskappe, wobei die Verschlusskappe von einem Behälterhals abgeschraubt ist;

Figur 5:

eine Seitenansicht der Verschlusskappe, wobei die Verschlusskappe sich in einer Offenposition befindet und neben dem Behälterhals angeordnet ist und die Verschlusskappe gemäss der zweiten Ausführungsform ausgeführt ist;

Figur 6:

eine Draufsicht auf die Verschlusskappe aus der Figur 5;

Figur 7:

eine isometrische Ansicht der Verschlusskappe aus Figur 5;

Figur 8:

eine Seitenansicht der Verschlusskappe, wobei die Verschlusskappe sich in einer Offenposition befindet und unterhalb des Behälterhalses angeordnet ist und die Verschlusskappe gemäss der zweiten Ausführungsform ausgeführt ist;

Figur 9:

eine Draufsicht auf die Verschlusskappe aus der Figur 8;

Figur 10:

eine isometrische Ansicht der Verschlusskappe aus Figur 8;

Figur 11:

eine isometrische Ansicht der Verschlusskappe und des Behälters in einer weiteren Ausführungsform;

Figur 12:

eine Draufsicht auf die Ausführungsform aus Figur 11;

Figur 13:

eine isometrische Ansicht der Verschlusskappe und des Behälters in einer weiteren Ausführungsform;

Figur 14:

eine Draufsicht auf die Ausführungsform aus Figur 13.

Figur 15:

eine Detailansicht des Garantieringes in einer weiteren Ausführungsform und

Figur 16:

eine Schnittansicht des Garantieringes aus Figur 15 mit visualisierten Neigungswinkeln.

Further advantages and features result from the following description of several exemplary embodiments of the invention with reference to the schematic illustrations. It shows in a representation that is not true to scale:

Figure 1:

an isometric view of a cap obliquely from below in a first embodiment;

Figure 2:

a side view of the closure cap figure 1 ;

Figure 3:

a side view of the closure cap in a second embodiment;

Figure 4:

a side view of the closure cap, wherein the closure cap is unscrewed from a container neck;

Figure 5:

a side view of the closure cap, wherein the closure cap is in an open position and is arranged next to the container neck and the closure cap is designed according to the second embodiment;

Figure 6:

a plan view of the cap from FIG figure 5 ;

Figure 7:

an isometric view of the locking cap figure 5 ;

Figure 8:

a side view of the closure cap, wherein the closure cap is in an open position and is arranged below the container neck and the closure cap is designed according to the second embodiment;

Figure 9:

a plan view of the cap from FIG figure 8 ;

Figure 10:

an isometric view of the locking cap figure 8 ;

Figure 11:

an isometric view of the closure cap and the container in a further embodiment;

Figure 12:

Figure 1 shows a plan view of the embodiment figure 11 ;

Figure 13:

an isometric view of the closure cap and the container in a further embodiment;

Figure 14:

Figure 1 shows a plan view of the embodiment figure 13 .

Figure 15:

a detailed view of the guarantee ring in a further embodiment and

Figure 16:

a sectional view of the guarantee ring figure 15 with visualized tilt angles.

In the Figures 1 to 10 a closure cap is shown, which is denoted in its entirety 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 in the Figures 4 to 10 implied. The closure cap 11 comprises a cylindrical threaded portion 15, a guarantee ring 17 and a first and a second retaining band 19a, 19b.

The threaded part 15 comprises a base 21 and a first cylindrical shell 23 with an open edge 25. On the inside of the shell 23 an internal thread 27 is formed. 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 Coat formed. An external thread 31 is formed on the container neck 29 and interacts with the internal thread 27 . As a result, the threaded part 15 can be screwed onto and off the container neck 29 . The closure cap 11 closes the pouring opening 33 which is provided inside the container neck 29 .

The guarantee ring 17 is held on the container neck 13 in a form-fitting manner. For this purpose, an annular projection 35 is formed on the outside of the container neck 29, which projections 37 formed on the inside of the anti-tamper ring 17 can reach under. The guarantee ring 17 can be rotated relative to the container neck 29 .

The first tether 19a has a first end 39 and a second end 41. The first end 39 is fixedly connected to the open edge 25. FIG. 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 can be detached from the guarantee ring 17 by at least one second predetermined breaking web 49 tied together.

The second tether 19b has a third end 51 and a fourth end 53. The third end 51 is fixedly connected to the open edge 25. FIG. 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 one third predetermined breaking web 59 and the second edge 45 can be detached from the guarantee ring 17 by at least one fourth predetermined breaking web 61 tied together.

In addition, the guarantee ring 17 is held on the open edge 25 with a plurality of guarantee bars 63 . The guarantee webs are preferably arranged at equal intervals on the guarantee ring 17 . It goes without saying that the areas occupied by the first and the second retaining strap 19a, 19b on the guarantee ring 17 are free of guarantee webs 63.

It is preferred if the first and the second retaining strap 19a, 19b has a width of between 4 mm and 5 mm so that it is sufficiently stable.

Since the closure cap 11 is rotationally symmetrical, it has a center 65. The center 65 lies in the imaginary plane between the open edge 25 and the guarantee ring 17. The first end 39 and the third end 51 close a first opening angle 67 of at least 110 degrees and at most 140 degrees and preferably at least 117 and at most 135 degrees with respect to the center 65 as the apex. The second end 41 and the fourth end 53 enclose a second opening angle 69 of at least 110 degrees and at most 135 degrees and preferably at least 117 and at most 135 degrees with respect to the center point 65 as the apex.

The first end 39 and second end 43 enclose a third opening angle 71 of at least 40 degrees and at most 70 degrees and preferably at least 45 and at most 63 degrees with respect to the center point of the closure cap as the vertex. The third end 51 and the fourth end 53 enclose a fourth opening angle 73 of at least 40 degrees and at most 70 degrees and preferably at least 45 and at most 63 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 strap 19a, 19b to have a specific length, which enables the functions of the closure cap described below.

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

At the second and the fourth end 41.53 are according to the embodiment Figure 1 and 2 a first and a second constriction 75,77 of the cross section of the first and the second retaining strap 19a,19b is provided. The first and second constrictions 75,77 allow the second and fourth ends 41,53 to act as a hinge.

In the embodiment according to Figures 3 and 5 to 7 the cross section of the first and second tethers (19a, 19b) is constant along the length of the first and second tethers (19a, 19b). As a result, the first and second retaining straps (19a, 19b) can be stretched constantly.

A first and a second recess 79 , 81 are provided on the guarantee ring 17 . The first and second retaining straps 19a, 19b are accommodated in the first and second recesses 79,81. This makes it possible to work the first and second retaining straps 19a, 19b directly out of the guarantee ring 17, for example by cutting them out of the guarantee ring.

If the closure cap 11 is pressed onto the container neck 29, the pouring opening 33 is closed by the closure cap 11 and the closure cap 11 is in a closed 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 second and the fourth end 41,53 acts as a joint through the first and second constriction 75,77. It is preferred if the first and the third end 39, 51 can also be bent, for example outwards, because this simplifies the translatory movement of the threaded part 15 and can take place in a more defined manner. The choice of the third and fourth opening angle 71, 73 means that the first and second retaining straps 19a, 19b have a length that allows the threaded part 15 to be moved further after it has been unscrewed from the container neck 29. When the container 13 is vertical, the threaded portion 15 can first be moved linearly in the horizontal direction toward the first and third ends 41,53. When the pouring opening 33 is completely released from the threaded part 15 , the threaded part 15 can be moved linearly along the container neck 29 parallel to the axis of rotation 83 of the container neck 29 . The length of the first and second retaining straps 19a, 19b and the optional joint function of the first and third ends 41, 53 are adjusted in such a way that the threaded part 15 is held in an open position on the container neck 29 ( Figures 5 to 7 ). The axis of rotation 83 of the container neck and the axis of rotation 85 of the threaded portion 15 are oriented substantially parallel in the open position. is in the open position the threaded part 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 threaded part 15, after it has been unscrewed from the container neck 29, to be transferred into the open position in a forced translational movement. Due to the forced operation, there is only one open position and not several. The length and cross-section of the first and second retaining straps 19a, 19b are preferably dimensioned such that the first and second retaining straps 19a, 19b are elastically tensioned when the threaded part 15 is in the open position. As a result, the threaded part 15 is pulled against the container neck 29 in the open position and is held there without wobbling. The elastic prestressing of the first and second retaining straps 19a, 19b also makes it possible for the threaded part to be repeatedly transferred from the open position to the closed position and vice versa. As a result, the container neck 29 can be opened and closed several times and the threaded part 15 is held in the open position stably and without wobbling each time after opening.

In the Figures 8 to 10 1 is shown another embodiment of how the threaded portion 15 can be located on the container body 28 in the open 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 step is preferably formed by a support ring 91 which is located at the transition from the container neck 29 to the container body 28 . The threaded portion 15 is held in the open position on the first and second tethers 19a, 19b. In the Figures 8 to 10 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 portion 15 rests with the open edge 25 on the surface of the container shoulder 93. The first cylindrical shell 23 rests against the support ring 91 . The retaining straps 19a, 19b are preferably slightly stretched in the open position. As a result, the threaded part 15 is pulled against the support ring 91 and is clamped below the support ring 91 . The support ring 91 prevents the threaded part 15 from tipping upwards due to the tension of the retaining straps 19a, 19b. Rather, the support ring 91 causes the open edge 25 is pressed against the container shoulder 93. As a result, the threaded part 15 is in the open position according to FIG Figures 8 to 10 kept particularly stable. 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.

How figure 8 shows, the axis of rotation of the container neck 83 and the axis of rotation 85 of the threaded part, based on the container shoulder 93, enclose an acute angle. The larger the angle, which can be at most 90 degrees; between the two 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 the Figures 11 and 12 the support ring 91 is shown with a plurality of first depressions 95 which are arranged next to one another. The first depression 95 is preferably V-shaped or U-shaped. As a result, a first and a second holding side 97, 99 is present at the edges of the depression. A first corner 101 is formed at the transition from the first holding side 97 to the open edge 105 of the support ring 91 . A second corner 103 is formed at the transition from the second holding side 99 to the open edge 105 of the support ring 91 .

The recess 95 allows that in the Figures 8 to 10 shown embodiment of the threaded part 15 is held particularly stable on the support ring 91. The casing 23 of the threaded part 15 is not only in contact with the support ring 91 at one point (see figure 8 ), but is pulled with the straps 19a,19b to a point on the first and the second holding side 97,99. These points are formed by the first and second corners 101,103. This "2-point support" additionally stabilizes the threaded part 15 in the open position. Additionally, the first indentations 95 can be used to receive the first and second tethers 19a, 19b therein when the threaded portion 15 is in the open position. As a result, the retaining straps 19a, 19b are held or guided. The first indentations 95 help ensure that the retaining straps 19a, 19b are in a clear position in the open position and cannot slip. As a result, the threaded part 15 is held in its open position even more stably.

The first depressions 95 can be formed on the support ring 91 at equal intervals all around. As the figure 12 shows, the first depressions 95 can also be provided in two symmetrically arranged partial areas, which are separated from one another by two separating webs 107 . This defines a first and second area in which the threaded part 15 can assume its open position.

In the Figures 13 and 14 an embodiment is shown in which second depressions 109 are provided on the support ring 91 . The second depressions are preferably hook-shaped so that the first and second retaining straps 19a, 19b can hook into the second depressions 109. The hook-shaped indentations 109 enable the retaining straps 19a, 19b to be guided better on the support ring 91. The second indentations 109 can be arranged on the support ring 91 in two partial areas. As already described further above, the two partial areas can be separated from one another by separating webs 107 in order to specify two clear areas for the open position of the threaded part 15 . The second depressions 109 can be arranged symmetrically with respect to a plane of symmetry 111 . The first and second retaining straps 19a, 19b are also expediently arranged symmetrically with respect to the plane of symmetry 111. The plane of symmetry 11 runs through the axis of rotation 85 of the threaded part 15 . Recesses 113 which serve to reduce weight can also be provided on the support ring 91 .

In the Figures 13 and 14 No first indentations 95 are shown and the first cylindrical shell 23 rests on the open rim 105 as a result. The provision of first depressions 95 for more stable holding of the threaded part 15 in the open position in addition to the second depressions 109 is of course possible.

On the bottom 21 of the threaded part 15 there is preferably an inner cone 87 ( figure 6 ), for example in the form of a sealing cylinder or a sealing ring. 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 closure cap 11 can therefore act as a so-called “cone sealer” and reliably seals the container neck 29 .

According to the following description of the figures Figures 15 and 16 the projections 37 can be formed in a further embodiment.

Slots 115 are provided on the guarantee ring distributed over the circumference of the guarantee ring 17 . The slots 115 each have a top edge 117 and a bottom edge 119 . The upper edge 117 is formed by a section of the anti-tamper ring 17 in the shape of a circular arc. The lower edge 119 corresponds to the free edge of a wall section 121 inclined inwards in the radial direction. Due to the inner inclination of the wall section 121, the lower edge 119 has a smaller radius than the guarantee ring 17 and can therefore strike an abutment (annular projection 35) of the container neck 29. when the threaded portion 15 is unscrewed from the container neck 29. The abutment is realized 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 119 grips 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 under high axial forces.

Each wall section 121 has a first section 123 and two second sections 125 . The first partial section 123 represents a jacket section that is folded inwards and is preferably flat. The second sections 125 adjoin the inward-facing sides of the first section 123 and connect it to the guarantee ring 17. The second sections 125 can be curved or flat and face one another at an angle inwards. The lower edge 119 of the slot 115 corresponds to the free edges of the first section 123 and the second sections 125 and lies in a plane 127 which is in figure 16 is shown. The plane 127 is preferably oriented perpendicularly to the axis of rotation 85 of the container neck 29 . These described design features of the wall section 121 have the advantage that the wall section 121 can bear against the annular projection 35 with the entire lower edge 119 and does not give way upwards in the event of an axial tensile force. As a result, the guarantee ring 17 is held inseparably on the projection 35 or can only be removed from the projection 35 with destruction. A movement of the first Partial section 123 inwards in the radial direction is prevented by the provision of the second partial sections 125 . However, a movement of the first section 123 outwards in the radial direction is possible. This movement is flexible and the wall portion 121, after being pushed radially outward, returns to its normal inwardly inclined position. This has the further advantage that the guarantee ring 17 can be easily removed from the mold and can be pressed onto the container neck 29 together with the threaded part 15 with little force. The flexibility of the wall section 121 means that it can be removed from an injection mold and pressed onto the container neck 29 without the risk of the wall section 121 being damaged.

It is preferred if the inclined wall sections 121 have a reduced wall thickness compared to the rest of the anti-tamper ring 17 . In the figure 16 it is shown that the area of the lower edge 119 has the smallest wall thickness. As a result, the flexibility of the wall section 121 described above is further improved radially outwards. The wall thickness of the wall section 121 increases linearly downwards, starting from the lower edge 119 .

In the Figures 15 and 16 the guarantee ring 17 is shown without the threaded part 15. In the Figures 15 and 16 It can be clearly seen that above the slots 115 on the guarantee ring 17 an annular bead 119 is formed, on which the upper edges 117 lie.

In the figure 16 a first and second angle of inclination 131,133 are entered. The first angle of inclination 131 indicates the inclination of the first section 123 relative to the plane of the lower edge 119 . The first angle of inclination 131 has a size between 60 and 80 degrees and preferably between 65 and 75 degrees. The larger the first angle of inclination 131, the better the stability of the wall sections 121 against vertical forces or axial tensile forces caused by unscrewing the threaded part 15. However, the first angle of inclination 131 must not be too large, otherwise the projection 35 will not be sufficient can be undercut.

The second angle of inclination 133 indicates the inclination of the slot 115 with respect to the plane of the lower edge 119 . The straight connecting line 135, which represents the inclination of the slot 115, is a connection between the upper edge 117 and the lower edge 119 in a plane which is spanned by the axis of rotation 85 and the straight connecting line 135 is. The second angle of inclination 133 is enclosed by the straight connecting line 135 and the plane 127 . The second angle of inclination 133 has a magnitude between 30 and 50 degrees and preferably between 35 and 45 degrees. The greater the second angle of inclination 133, the easier it is for the guarantee ring 17 to be removed from the mold.

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

Legend:

11

sealing cap

13

container, bottle

15

threaded part

17

guarantee ring

19a

First tether

19b

Second strap

21

bottom of the threaded part

23

First cylindrical mantle

25

open edge

27

inner thread

28

container body

29

container neck

31

external thread

33

pouring opening

35

Ring-shaped projection

37

protrusions

39

First end of the first tether

41

Second end of the first tether

43

First edge of the first tether

45

Second edge of the first tether

47

First breaking point

49

Second breaking point

51

Third end of the second tether

53

Fourth end of the second tether

55

Third edge of the second tether

57

Fourth edge of the second strap

59

Third breaking point

61

Fourth breaking point

63

guarantee bars

65

center of the cap

67

First opening angle

69

Second opening angle

71

Third opening angle

73

Fourth opening angle

75

First constriction

77

Second constriction

79

First recess

81

Second recess

83

Axis of rotation of the container neck

85

Axis of rotation of the threaded part

87

inner cone

89

inner wall

91

Support ring, paragraph

93

container shoulder

95

First deepening

97

First holding page

99

Second holding side

101

First corner

103

second corner

105

Open edge of the support ring

107

dividers

109

Second Wells

111

plane of symmetry

113

recesses

115

slots

117

top edge

119

bottom edge

121

wall section

123

First section

125

Second Sections

127

level

129

ring bead

131

First angle of inclination

133

Second angle of inclination

135

connecting line

Claims (28)

1. Closure cap (11) for closing the pouring opening (33) of a container (13), having

   - a cylindrical threaded part (15) having an open rim (25) and an inner thread (27) which can coordinate with an outer thread (31) of a container neck (29) of the container (13),

   - a security ring (17) designed to be held on a projection (35) formed on the container neck (29),

   - a plurality of security webs (63) which releasably connect the security ring (17) to the open rim (25), and

   - a first retaining strip (19a) having a first and a second end (39, 41) and a first and a second rim (43, 45), wherein the first end (39) is securely connected to the open rim (25) of the threaded part (15), the second end (41) is securely connected to the security ring (17), the first rim (43) is releasably connected to the open rim (25) of the threaded part (15) by at least one, first, predetermined breaking web (47), and the second rim (45) is releasably connected to the security ring (17) by at least one, second, predetermined breaking web (49),

   further characterized by

   a second retaining strip (19b) having a third and a fourth end (51, 53) and a third and fourth rim (55, 57), wherein the third end (51) is securely connected to the open rim (25) of the threaded part (15), the fourth end (53) is securely connected to the security ring (17), the third rim (55) is releasably connected to the open rim (25) of the threaded part (15) by at least one, third, predetermined breaking web (59), and the fourth rim (57) is releasably connected to the security ring (17) by at least one, fourth, predetermined breaking web (61),
   characterized that

   the first and the third ends (39, 51) enclose a first opening angle (67) of at least 110 degrees and at most 140 degrees, and preferably of at least 117 and at most 135 degrees, with respect to the center point (65) of the closure cap (11) as apex, and

   the second and the fourth ends (41, 53) enclose a second opening angle (69) of at least 110 degrees and at most 135 degrees, and preferably of at least 117 and at most 135 degrees, with respect to the center point (65) of the closure cap (11) as apex.
2. Closure cap according to claim 1, characterized in that the first and second ends (39, 41) enclose a third opening angle (71) of at least 40 degrees and at most 70 degrees, and preferably of at least 45 and at most 63 degrees, with respect to the center point (65) of the closure cap (11) as apex.
3. Closure cap according to claim 1 or 2, characterized in that the third and the fourth ends (51, 53) enclose a fourth opening angle (73) of at least 40 degrees and at most 70 degrees, and preferably of at least 45 and at most 63 degrees, with respect to the center point of the closure cap as apex.
4. Closure cap according to claim 3, characterized in that the third and the fourth opening angles (71, 73) are of equal size, as a result of which the first and the second retaining strips (19a, 19b) are of equal length.
5. Closure cap according to one of the preceding claims, characterized in that the cross-section of the first and second retaining strips (19a, 19b) is constant along the length of the first or second retaining strip (19a, 19b).
6. Closure cap according to one of claims 1 through 4, characterized in that a first or a second narrowing (75, 77) of the cross-section of the first or the second retaining strip (19a, 19b) is provided at the second or the fourth end (41, 53), as a result of which the second or the fourth end (41, 53) can act as an articulation.
7. Closure cap according to one of the preceding claims, characterized in that the security webs (63) are arranged at uniform intervals along the open rim (25).
8. 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) are arranged at uniform intervals along the first and second or the third and fourth rims (43, 45, 55, 57).
9. Closure cap according to one of the preceding claims, characterized in that the position of the security ring (17) in relation to the preferably annular projection (35) of the container neck (29) can be varied in the axial direction and in the circumferential direction.
10. Closure cap according to one of the preceding claims, characterized in that a first and second recess (79, 81) for accommodating the first and second retaining strips (19a, 19b) are provided on the rim, facing the first and second retaining strips (19a, 19b), of the security ring (17),
11. Closure cap according to one of the preceding claims, characterized in that the first and/or the second ends (39, 41) of the first retaining strip (19a) and the third and/or the fourth ends (51, 53) of the second retaining strip (19b) can be bent along predefined bending lines.
12. Closure cap according to one of the preceding claims, characterized in that an inward-protruding inner cone, e.g., in the form of a sealing cylinder or a sealing ring, is formed on the bottom (21) of the threaded part (15) and is designed to coordinate in a sealing manner with the inner wall of the container neck (29) in the closed position.
13. Closure cap according to one of the preceding claims, characterized in that the first and second retaining strips (19a, 19b) have a width between 3 mm and 7 mm, and preferably a width between 4 mm and 5 mm.
14. Closure cap according to one of the preceding claims, characterized in that the closure cap (11) is designed to coordinate with a standardized container neck (29) having an outer thread (31) and annular projection (35).
15. 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.
16. Closure cap according to one of the preceding claims, characterized in that the threaded part (15), the security ring (17), the first and second retaining strips (19a, 19b), the security webs (64), and the at least first, second, third, and fourth predetermined breaking webs (47, 49, 59, 61) are produced in one piece.
17. Closure cap according to one of the preceding claims, characterized in that the security ring (17) has slots (115) having an upper edge (117) and a lower edge (119) and arranged to be distributed over the circumference, wherein the upper edge (117) is formed by a circular-arc-shaped section of the security ring (17), and the lower edge (119) is formed by a wall section (121) inclined inwards in the radial direction, and in that the lower edge (119) of each slot (115) forms projections (37), as a result of which engagement means are formed for form-fitting engagement with the annular projection (35).
18. Container (13), having

    - a container body (28),

    - a container neck (29) adjoining the container body (28),

    - an outer thread (31) formed on the container neck (29), and

    - a closure cap (11) for closing a pouring opening (32) provided within the container neck (29),

    characterized in that
    the closure cap is a closure cap (11) according to one of claims 1 through 16.
19. Container according to claim 18, characterized in that a shoulder (91) is formed on the container neck (29), which shoulder is formed below the security ring (17) or is formed by the security ring (17), and the length of the first and second retaining strips (19a, 19b) is dimensioned in such a way that the threaded part (15) can be lifted out of a closing position after unscrewing from the container neck (29) and can be positioned below the shoulder (91) in an open position, wherein the threaded part (15) is held in the open position on the first and second retaining strips (19a, 19b), rests at least partially with the open rim (25) on the container body (28), and rests against the shoulder (91).
20. Container according to claim 19, characterized in that the shoulder is a support ring (91) that is formed at the transition from the container neck (29) to the container body (28).
21. Container according to claim 20, characterized in that at least one, first depression (95) in the radial direction is provided on the support ring (91), as a result of which a first holding side (97) having a first corner (101) and a second holding side (99) having a second corner (103) are formed on the support ring (91), wherein the first and second corners (101, 103) are present at the transition from the first and second holding sides (97, 99) to the open rim (105) of the support ring (91).
22. Container according to claim 21, characterized in that a plurality of second depressions (109) are provided on the support ring (91), and these second depressions (109) together with the first and second retaining strips (19a, 19b) are arranged symmetrically with respect to a plane of symmetry (111), wherein the plane of symmetry (111) runs through the axis of rotation (85) of the threaded part (15),
23. Container according to claim 22, characterized in that the second depressions are hook-shaped.
24. Container according to one of claims 18 through 23, characterized in that the length of the first and second retaining strips (19a, 19b) is dimensioned in such a way that the threaded part (15) can be lifted out of a closing position after unscrewing from the container neck (29) and can be positioned next to the container neck (29) in an open position, and is held in the open position on the first and second retaining strips (19a, 19b).
25. Container according to one of claims 18 through 24, characterized in that the first and second retaining strips (19a, 19b) are elastically tensioned in the open position of the threaded part (15), as a result of which the threaded part (15) is pulled onto the container neck (29) or the shoulder (91) in the open position.
26. Container according to one of claims 24 or 25, characterized in that the axis of rotation (85) of the threaded part (15) and the axis of rotation (83) of the container neck (29) are substantially parallel in the open position of the threaded part (15).
27. Container according to one of claims 24 through 26, characterized in that the length of the first and second retaining strips (19a, 19b) is dimensioned in such a way that the axial orientation of the threaded part (15) in the open position and in the closing position is substantially identical.
28. Container according to one of claims 18 through 27, characterized in that the closure cap (11) can be pressed onto the bottle neck.

Images