ES2982522T3 - Closing of container and vessel - Google Patents

Abstract

The invention relates to a closure cap (11) for closing the pouring opening (33) of a container (13), which has a cylindrical threaded part (15) with an open edge (25) and an internal thread that can interact with an external thread (31) of a container neck (29) of the container (13), a securing ring (17) that is designed to be held in a projection (35) molded in the container neck (29), a plurality of securing bands releasably connecting the securing ring (17) to the open edge (25), a first fastening strip (19a) with a first and a second end (39, 41) and a first and a second edge (43, 45), the first end (39) being rigidly attached to the open edge (25) of the threaded part (15) and the second end (41) being rigidly attached to the securing ring (17), and a second fastening strip (19b). with a third end (39, 41) and a third end (39) rigidly connected to the open edge (25) of the threaded part (15) and a third end (39) rigidly connected to the safety ring (17). and a fourth end and a third and fourth edge, the third end being rigidly connected to the open edge (25) of the threaded part (15) and the fourth end being rigidly connected to the safety ring (17). The second end (41) is arranged on the circular path of the safety ring (17) in a manner substantially diametrically opposite to the fourth end before the threaded part (15) is first opened. (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Closing of container and vessel

Field of invention

The invention relates to a closure cap according to the preamble of claim 1 and to a container according to the preamble of claim 19.

State of the art

From the state of the art in the field of plastic closure caps with a tamper evident strip, closure caps are known which remain on the container without being lost and close its pouring opening. The retention function is also important because it is to be expected that legal provisions will require that the closures of beverage bottles are captively attached to the beverage bottle even in the open state.

Such a closure cap is known from DE 93 18 243 U1, which is not lost when closing a container. After the screw part of the cap has been unscrewed, it is held in place by a gripping band on the sealing strip. The gripping band is integrated into the sealing strip when the closure cap is closed. The sealing strip must therefore have a greater height, which corresponds to the sum of the height of a conventional sealing strip and the height of the gripping band. The increased height therefore inevitably leads to a higher material consumption when producing the corresponding closure cap.

In WO 2020/099200, which is included in Article 54(3) EPC, and in CA 2990674, a closure is disclosed in each case consisting of a screw cap with a tamper evident band, which has at least one cylindrical cap cover with an internal thread and a circumferential tamper evident band at the open lower end of the cap cover, which is attached to the lower edge of the cap cover along easily tearable lines of weakening. After tearing along the lines of weakening, the tamper evident band remains fixedly attached to the cap cover via retaining bands, whereby the screw cap is held captively to the tamper evident band after unscrewing. The two ends of the formed retaining bands, which are held at the lower edge of the cap cover, are arranged adjacently at a short distance from each other at the lower edge. Due to the short distance from each other, the two ends can act as a hinge around which the screw cap can be folded outwards. In the unfolded position, the screw cap has a stabilised opening angle and remains in this folded position. During further use of the bottle, the screw cap is thus in a position that does not interfere with pouring or drinking from the bottle. The two ends of the retaining bands that are held in the security band are arranged diametrically opposite each other on the security band and are therefore at a distance from each other that corresponds to half the circumference of the security band.

Object of the invention

The disadvantages of the described state of the art lead to the objective of creating a captive closure cap whose material consumption differs only insignificantly from the material consumption of a conventional closure cap with a tamper-evident strip.

Another objective is to present a captive closing lid that is particularly easy to use, including intuitive operation and does not become an obstacle to any use of the container to be closed.

Description

The solution of the presented object is solved with a closing cap for closing a pouring opening of a container thanks to the characteristics mentioned in the distinctive paragraph of claim 1. Advantageous improvements and/or variants of embodiment of the invention are the subject of the dependent claims.

The second end is arranged essentially diametrically opposite to the fourth end in the circular path of the securing ring before the threaded part is opened for the first time. The diametrical arrangement means that the first and second retaining bands do not necessarily have to be elastically deformed in order to be able to move into the open position. Even in the open position, in which the threaded part is clamped to the container, the retaining bands do not have to be elastically deformed or stretched.

The symmetrical arrangement also allows the threaded part to be swivelled to the left or right after unscrewing into a holding position next to the pouring opening. The essentially diametrical arrangement also allows for easy and even opening of the threaded part.

The invention is characterized in that before the closure cap is opened for the first time, the first, second, third and fourth ends are arranged one after the other in ascending order in the circular path of the sealing ring in an anti-clockwise direction, when the internal thread and the external thread are designed as right-hand threads. This arrangement of the retaining bands on the open edge of the thread part and on the sealing ring enables both retaining bands to experience a pressure load of equal magnitude when opening the thread part. Neither of the retaining bands experiences a tensile force directed against the pressure load. At the same time, the retaining bands expand horizontally away from the bottle neck and, by the lifting movement of the thread part, any predetermined breaking ribs are broken. This enables the closure cap to be opened easily and evenly with a uniform opening force. With this arrangement of the retaining bands, there is also no risk of them becoming entangled or intertwined. Therefore, opening the closing lid differs little or nothing from opening a lid without retaining bands.

In another preferred embodiment of the invention, before the threaded part is opened for the first time, the first end is arranged substantially diametrically opposite to the third end in the circular path of the securing ring. This arrangement additionally facilitates the positioning of the threaded part and also the re-screwing of the threaded part onto the container neck.

It is useful if the first edge is detachably connected to the open edge of the threaded part by means of at least one first predetermined breaking rib and the second edge is detachably connected to the securing ring by means of at least one second predetermined breaking rib and if the third edge is detachably connected to the open edge of the threaded part by means of at least one third predetermined breaking rib and the fourth edge is detachably connected to the securing ring by means of at least one fourth predetermined breaking rib. This means that the retaining bands are held firmly on the threaded part and on the securing ring. This makes it possible for the closure cap to be snapped onto the neck of the container despite the provision of two retaining bands.

It is preferable that the first and third ends comprise a first opening angle of at least 170 degrees and at most 190 degrees, and preferably of at least 175 and at most 185 degrees relative to the center point of the closure cap as apex; and that the second and fourth ends comprise a second opening angle of at least 170 degrees and at most 190 degrees, and preferably of at least 175 and at most 185 degrees relative to the center point of the closure cap as apex. It is therefore conceivable that the first and second opening angles differ slightly from the arrangement described above, but that the second and fourth or first and third ends of the retaining bands are still arranged substantially diametrically opposite to each other. The center point of the closure cap is located in the plane between the open edge and the sealing ring. By selecting the first and third opening angles, the length of the first and second retaining bands and their position along the sealing ring can be precisely determined in order to fulfil the following functions, regardless of the diameter of the closure cap: The first and second retaining bands have a length such that the threaded part can be unscrewed from the container neck. In addition, the length of the retaining bands allows the threaded part to move translationally outwards from the pouring opening and to move downwards along the container neck into an open position. By providing two retaining bands, this movement is forced and the threaded part is forced into an open position. In the open position, it is ensured that the threaded part does not protrude from the pouring opening when the filling material is poured.

Conveniently, the first and second ends comprise a third opening angle of at least 110 degrees and at most 140 degrees and preferably at least 120 and at most 130 degrees relative to the centre point of the closure cap as the apex. By choosing the third opening angle, the first retaining band has a defined length, thanks to which the functions described above are possible in conjunction with the second retaining band.

Conveniently, the third and fourth ends comprise a fourth opening angle of at least 110 degrees and at most 140 degrees and preferably at least 120 and at most 130 degrees relative to the centre point of the closure cap as the apex. By choosing the fourth opening angle, the second retaining band has a defined length, thanks to which the functions described above are possible in conjunction with the second retaining band.

Since the first, second, third and fourth opening angles must have a central point of the circle as a vertex, the sum of their angles is 360 degrees.

In a particularly preferred embodiment of the invention, the third and fourth opening angles have the same dimensions, so that the first and second retaining bands are equally long. The fact that the first and second retaining bands are of the same length allows forced translational movement, once the threaded part of the container neck has been unscrewed.

In another particularly preferred embodiment of the invention, the cross-section of the first and second retaining bands is constant over the length of the first and second retaining bands. Thus, the retaining bands have constant elastic properties over their length, so that a defined length of the retaining bands can be determined, with which the threaded part can be held stable in its open position and without wobbling in the container. In the open position, the first and second retaining bands are pre-stretched. The elastic pretensioning of the retaining bands allows the threaded part to be unscrewed from the container neck and screwed back on again several times and to be held reliably in the open position several times. The constant cross-section of the retaining bands over their length prevents over-extension of the retaining bands in the open position.

It is preferable that the securing ribs are arranged at regular intervals along the open edge. This way, the securing ring remains sufficiently stable on the threaded part so that the closing cap can be snapped onto the container neck. The threaded part can be unscrewed by the regular spacing of the securing ribs and with a constant force.

The first, second, third and fourth predetermined breaking ribs are conveniently arranged at regular intervals along the first and second or third and fourth edges. In this way, the closure cap is also sufficiently stable in the area of the first and second retaining strips to be able to snap onto the container neck. In addition, the broken predetermined breaking ribs and the guarantee ribs show that the threaded part facing the container neck has already been turned and is no longer closed in its original state.

In another particularly preferred embodiment of the invention, the position of the securing ring can be changed relative to the annular projection of the container neck in the axial direction and in the circumferential direction. Since the securing ring is movable in an axial upward direction, it is pulled upwards when the threaded part is unscrewed, so that the first and second retaining bands can be shortened and better adapted to the open position. By turning the securing ring when turning the threaded part at the beginning of unscrewing, the first and second retaining bands experience an axial force when the threaded part is unscrewed and are pulled upwards. It is preferred that the securing ring can only perform a very small lifting movement (for example 1 to 2 mm) in the axial direction, so that the predetermined breaking ribs can be torn off by the rotating movement or lifting movement of the threaded part.

It is advantageous if the sealing ring has an anti-rotation device which prevents the sealing ring from rotating relative to the bottle neck when the screw part is opened, when the sealing ring has rotated a certain distance in the circumferential direction. The anti-rotation device makes it possible to increase the pressure force on the retaining bands when the screw part rotates in the opening direction, since the latter can rest against the sealing ring. Since the sealing ring rotates with the screw part at the beginning of the rotation, the retaining bands do not wrap around the neck of the container.

Advantageously, a first and second recess is provided on the edge of the retaining ring facing the retaining band for receiving the first and second retaining bands. In this way, the first and second retaining bands are small and malleable without consumption of additional retaining ring material. For example, the first and second retaining bands can be formed from the retaining ring by making appropriate cuts. However, the closure cap according to the invention is preferably produced by an injection moulding process.

In another preferred embodiment of the invention, the first and/or second end of the first retaining band and the third and/or fourth end of the second retaining band can be folded along predefined folding lines. In this way, the first and second retaining bands can each serve as a lever with two pivot points. The folding lines also allow the first and second retaining bands to not be bent or folded at random positions in the open position, but exactly on the folding lines. Thus, the threaded part is held in the open position particularly precisely by both retaining bands and is guided precisely into the open position by both retaining bands.

It is advisable that an inwardly projecting inner cone, e.g. in the form of a sealing cylinder or a sealing ring, is formed on the cover plate of the screw part, which is designed to cooperate hermetically with the inner wall of the neck of the container in the closed position. The closing cap can thus act as a so-called "sealing cone" and effectively seal the neck of the bottle.

In another preferred embodiment of the invention, the retaining band 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 band does not tear accidentally, in particular when the predetermined tear ribs are torn. In addition, the closure cap is not very high and can be tightly attached to standard container necks with external thread.

The invention is characterised in that the closure cap is designed to cooperate with a standard container neck with external thread and an annular projection. The closure cap can therefore be placed on standard container necks, in particular PET beverage bottles. For this reason, containers which are coupled with the closure cap according to the invention do not have to be specially adapted to the closure cap.

The closing cap is conveniently made of a plastic material, preferably HDPE (high-density polyethylene) or PP (polypropylene). The closing cap can therefore be made of standard plastic materials, from which well-known sealing caps with sealing rings are also produced.

In another preferred embodiment of the invention, the threaded part, the securing ring, the retaining bands and the at least one predetermined first and second breaking element are manufactured in one piece. In this way, the closure cap can be produced in an injection mould without any additional processing steps being necessary to mould the first and second retaining bands. Preferably, the inner cone is also produced in one piece together with the other parts of the closure cap.

In a particularly preferred embodiment of the invention, the retaining ring has grooves arranged around the circumference with an upper edge and a lower edge, the upper edge being formed by a retaining ring section arranged in the form of a circular arc and the lower edge being formed by a wall section inclined in a radially inward direction, and the lower edge of each groove forming the projections, with which coupling means are formed for a form-fitting coupling with the annular projection. Since the coupling means in the form of the inwardly inclined wall sections are not present in their entirety in the retaining ring and, in addition, grooves are present, the molding of which further reduces the use of material, the need for plastic material can be significantly reduced by up to 5%. In addition, the wall section is immovable in a radially inward direction, so that the retaining ring is held in the annular projection and cannot be pulled over it until the retaining ring extends along its circumference. The retaining ring is held so firmly in the annular projection by the wall sections that the predetermined breaking elements are sure to tear off before the hold of the wall sections is overcome. However, the wall sections are flexible and movable in a radially outward direction. In this way, the wall sections can be removed from the injection mould or injection moulding tool with little effort. As a result, the application force for snapping open the closure cap is considerably reduced compared to the prior art. A stretching of the retaining ring that could lead to permanent damage to the closure cap is largely avoided by snapping it open.

Another aspect of the invention relates to a container having a container body, a container neck connecting to the container body, an external thread formed on the container neck and a closing cap, according to the above description.

In a particularly preferred embodiment, a projection is formed on the container neck, which is configured below the securing ring or is formed by the securing ring, and the length of the first and second retaining bands is dimensioned such that the threaded part can be lifted from a closed position after being unscrewed from the container neck and can be brought under the projection into an open position, whereby the threaded part is held in the open position by the first and second retaining bands, rests with the open edge at least partially on the container body and is supported by the projection. The threaded part is pulled with the aid of the retention bands at the transition between the projection and the container body in the direction of the container neck, whereby the threaded part is retained in the transition. Due to the support on the projection and the container body, the threaded part no longer has freedom of movement and is therefore fixed in this open position.

The projection is advantageously a support ring, which is formed at the transition from the container neck to the container body. Such a support ring is produced in a plastic bottle, in particular a PET bottle, in any case available from a production point of view. It is therefore particularly practical to use this support ring as a stop for the threaded part. If there is no support ring in the container, it is also possible to form a projection on the container neck with a length in the circumferential direction, which allows the first cylindrical cover of the threaded part to be supported on the projection. It is also conceivable that the securing ring serves as a projection, on which the first cylindrical cover can be supported.

In another preferred embodiment of the invention, the length of the first and second retaining bands is dimensioned such that the threaded part can be lifted from a closed position after being unscrewed from the retaining neck and can be brought into an open position in which the cover plate that is in the open position rests on the external thread and on the shoulder. The arrangement of the retaining bands allows the user to choose between two fixing positions or open positions, in which the threaded part exposes the pouring opening and is held in place on the container without wobbling. The threaded part can be pivoted along an axis of rotation on which the first end of the first retaining band and the third end of the second retaining band meet, until the cover plate is facing the container neck. The threaded part can then be held on the container neck by the cover plate resting on the external thread and the support ring. In this second fixing position, the retaining bands are tensioned and hold the threaded part without wobbling on the container neck.

In another particularly preferred embodiment of the invention, the first and second retaining bands are free from elastic deformation in the open position of the threaded part. The threaded part can be moved repeatedly from the open position to the closed position and can therefore be screwed and unscrewed repeatedly onto the container neck. The function of the closure cap is not impaired by repeated opening and closing of the threaded part.

It is advantageous that the closing cap can be snapped onto the neck of the bottle. This means that the container can be closed with the closing cap after filling completely automatically and correspondingly quickly and reliably.

Further advantages and features become apparent from the following description of an exemplary embodiment of the invention with reference to schematic representations. They show, in a schematic representation, not to scale:

Figure 1: a side view of an upper part of a container and a closing lid with a first and second retaining band;

Figure 2: a side view of the closing cap, where the closing cap is unscrewed from the container neck of the container;

Figure 3: The unscrewed closing cap in a top view;

Figure 4: a side view of the container part and the closing cap, where the closing cap is in an open position and held below the container neck;

Figure 5: a top view of the container and the closing lid in the open position;

Figure 6: A detailed view of the securing ring of another embodiment and

Figure 7: A sectional view of the securing ring of Figure 6 with the angle of inclination shown.

In Figures 1 to 5 a closure cap is shown which is designated in its entirety with the reference sign 11. The closure cap 11 is held in place without being lost on the container 13, in particular on a bottle 13. The closure cap 11 comprises a cylindrical threaded part 15, a securing ring 17 and a first and second retaining band 19a, 19b.

The screw portion 15 comprises a cover plate 21 and a first cylindrical cover 23 with an open edge 25. An internal thread 27 is formed on the inside of the cover 23. The container 13 comprises a container body 28 and a container neck 29 which connects to the container body 28. The container neck 29 is formed as a second cylindrical cover. An external thread 31 is formed on the container neck 29, which cooperates with the internal thread 27. In this way, the screw portion 15 can be screwed onto and off the container neck 29. The closing cap 11 closes the pouring opening 33, which is provided inside the container neck 29.

The retaining ring 17 is held in a form-fitting manner on the container neck 13. For this purpose, an annular projection 35 is formed on the outside of the container neck 29, which can be gripped by the projections 37 (FIGS. 6 and 7) formed on the inside of the retaining ring 17. The retaining ring 17 is twisted relative to the container neck 29.

The first retaining band 19a has a first end 39 and a second end 41. The first end 39 is fixedly connected to the open edge 25. The second end 41 is fixedly connected to the sealing ring 17. In this way, the closure cap 11 is held on the container 13 without being lost. Furthermore, the first retaining band 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 predetermined first breaking rib 47 and the second edge 45 is connected to the sealing ring 17 in a detachable manner with at least one predetermined second breaking rib 49.

The second retaining band 19b has a third end 51 and a fourth end 53. The third end 51 is fixedly connected to the open edge 25. The fourth end 53 is fixedly connected to the sealing ring 17. In this way, the closing lid 11 is additionally held on the container 13 without being lost. Furthermore, the second retaining band 19b has a third edge 55 and a fourth edge 57. The third edge 55 is connected to the open edge 25 via at least one predetermined third breaking rib 59 and the second edge 45 is detachably connected to the sealing ring 17 via at least one predetermined fourth breaking rib 61.

In addition, the securing ring 17 is held in place by a plurality of securing ribs 63 at the open edge 25. Preferably, the securing ribs are arranged at regular intervals on the securing ring 17. It goes without saying that the areas occupied by the first and second retaining bands 19a, 19b on the securing ring 17 are free of securing ribs 63, because the predetermined breaking ribs 47, 49, 59, 61 acting as securing ribs each form a connection between the open edge 25 and the securing ring 17.

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

Since the closing cover 11 is rotationally symmetrical, it has a central point 65. The central point 65 is located in the plane formed between the open edge 25 and the sealing ring 17.

The retaining bands 19a, 19b or their ends have an arrangement on the sealing ring 17 and on the open edge which enables the first and second retaining bands to be exposed to a pressure load when they are first opened. To this end, before the closing cover 11 is opened for the first time, the first, second, third and fourth ends 39, 41, 51, 53 are arranged one after the other in increasing order in the circular path of the sealing ring 17 in a counter-clockwise direction, when the inner thread 27 and the outer thread 31 are designed as right-hand threads. The second and fourth ends 41, 53 which are connected to the sealing band 17, and the first and third ends 39, 51, which are connected to the thread portion 15, therefore alternate. As regards the direction of rotation, the retaining bands are aligned in the same way. This means that, as already mentioned above, the two retaining bands 19a, 19b are exposed to a pressure load during an initial opening and also during subsequent openings after closing, because both retaining bands 19a, 19b are essentially tightened due to the rotational movement.

As can be seen from the figures, the first and third ends 39, 51 are located essentially diametrically opposite to each other. The same applies to the second end 41 and the fourth end 53. This symmetrical arrangement of the ends of the retaining bands 19a, 19b makes it possible for the screw portion 15, after being unscrewed from the container neck 29, to be pivoted as desired to one side or the other next to the pouring outlet along the imaginary plane of symmetry between the second and fourth ends 41, 53. The screw portion 15 can therefore be tilted to the left or to the right to release the pouring opening 33. The axis of rotation 83 of the container neck 29 lies in the imaginary plane of symmetry.

The following defined opening angles between the ends of the retaining bands 19a, 19b are shown in Fig. 5. Since Fig. 5 shows the closing cover 11 in a top view, the opening angles can be seen particularly well. Although Fig. 5 shows that the retaining bands have been retracted from their recesses 79, 81 in the sealing ring 17, the ends of the recesses are essentially identical to the ends of the retaining bands. The first end 39 and the third end 51 comprise a first opening angle 67 of at least 170 degrees and at most 190 degrees and preferably at least 175 and at most 185 degrees with respect to the central point 65 as a vertex. The second end 41 and the fourth end 53 comprise a second opening angle 69 of at least 170 degrees and at most 190 degrees and, preferably, of at least 175 and at most 185 degrees with respect to the central point 65 as a vertex.

The first end 39 and the second end 41 comprise a third opening angle 71 of at least 110 degrees and at most 140 degrees and preferably at least 120 and at most 130 degrees relative to the central point of the closure cap as apex. The third end 51 and the fourth end 53 comprise a fourth opening angle 73 of at least 110 degrees and at most 140 degrees and preferably at least 120 and at most 130 degrees relative to the central point 65 as apex. It is understood that the sum of the first, second, third and fourth opening angles 67,69,71,73 must be 360 degrees. By choosing the first, second, third and fourth opening angles it is possible for the first and second retaining bands 19a,19b to have a certain length which enables the functions of the closure cap described below.

Conveniently, the third and fourth opening angles 71,73 are of the same dimensions, which means that the first and second retaining bands 19a,19b have the same length. The first and second retaining bands 19a,19b are preferably offset by 180 degrees and made from the retaining ring 17.

The first and second fold lines 75,77 are formed at the first and third ends 39,51, respectively. By means of the first and second fold lines 75,77, the second and/or fourth ends 39,51 may act as hinges. Fold lines may also be provided at the second and fourth ends 41,53.

A first and a second receptacle 79, 81 are provided on the retaining ring 17. The first and the second receptacle 79, 81 accommodate the first and the second retaining bands 19a, 19b. In this way, it is possible to produce the first and the second retaining bands 19a, 19b directly from the retaining ring 17, for example by cutting them out of the retaining ring, or by providing them, for example, by means of appropriate injection-moulded moulding.

When the closure cap 11 is snapped onto the container neck 29, the closure cap 11 has closed the pouring opening 33 and the closure cap 11 is in a closed position. When the threaded part 15 of the container neck 29 is unscrewed, the first, second, third and fourth predetermined breaking ribs 47, 49, 59, 61 and the securing ribs 63 are broken. The securing ring 17 is turned with the threaded part 15. During unscrewing, the first and second retaining bands 19a, 19b can be straightened. In this case, the first and second ends 39, 51 function as hinges via the first and second folding lines 75, 77 (not shown). It is preferable if the second and fourth ends 41,53 are also foldable, for example, they can be folded outwards, because in this way the translational movement of the thread part 15 is facilitated and can be carried out in a defined manner.

4 shows how the threaded part 15 can be arranged on the container body 28 in the open position. A projection 91 is formed on the container neck 29, which is formed under the retaining ring 17 or is formed by the retaining ring 17 itself. The projection is formed by a support ring 91, which is located at the transition from the container neck 29 to the container body 28. The threaded part 15 is held in the open position by the first and second retaining bands 19a, 19b. 4 shows the container body 28 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 bands 19a, 19b are dimensioned such that the open edge 25 can be pushed into the open position over the support ring 91. In the open position, the screw portion 15 is positioned with the open edge 25 on the surface of the container shoulder 93. The first cylindrical cover 23 is supported by the support ring 91. Preferably, the retaining bands 19a, 19b are stretched minimally in the open position. In this way, the screw portion 15 is pulled onto the support ring 91 and is jammed under the support ring 91. The support ring 91 prevents the screw portion 15 from tilting upwards when the retaining bands 19a, 19b are pulled. In fact, the support ring 91 causes the open edge 25 to be pressed into the container shoulder 93. In this way, the screw portion 15 remains particularly stable in the open position. It is also conceivable that the cylindrical cover 23 rests on the securing ring 17, if there is no supporting ring. In this case, the sealing ring 17 acts as a projection for the threaded part 15.

As shown in Figure 4, the axis of rotation of the container neck 83 and the axis of rotation 85 of the threaded portion comprise an acute angle based on the container shoulder 93. The larger the angle between both axes of rotation 83, 85, which may be at most 90 degrees, the greater the tensile force on the container shoulder 93. The smaller the angle between both axes of rotation 83, 85, the greater the tensile force on the support ring 91.

In a second, not shown, use, the threaded portion can be rotated along the first and third ends 39, 53 after being unscrewed from the container neck 29, such that the cover plate 21 is oriented in the direction of the container neck 29. The threaded portion can thus be positioned (similarly to what was explained above) on the container neck, such that the retaining bands 19a, 19b push or tension the cover plate onto the outer thread 31 and the support ring 91.

The projections 37 can be designed according to the following illustrative description of Figures 6 and 7. This embodiment of the projections 37 is contained in the Swiss patent applications with application numbers 01467/19 and 01695/19, the priorities of which are claimed and the publications of which hereby form part of the subject matter of the present patent application. Slots 95 are provided in the retaining ring, which are distributed across the circumference of the retaining ring 17. The slots 95 each have an upper edge 97 and a lower edge 99. The upper edge 97 is formed by a circular arc-shaped section of the retaining ring 17. The lower edge 99 corresponds to the free edge of a wall section 101 inclined in a radially inward direction. Due to the internal inclination of the wall section 101, the lower edge 99 has a smaller radius than the retaining ring 17 and can thus strike a support (annular projection 35) of the container neck 29 when the threaded part 15 is unscrewed from the container neck 29. The support is provided by the annular projection 35, which is formed on the container neck 29 below the external thread 31. When the threaded part 15 is unscrewed, the lower edge 99 engages the projection 35 in a positive-locking manner, so that the retaining ring 17 is reliably held in place even under high axial forces on the annular projection 35.

Each wall section 101 has a first part section 103 and two second part sections 105. The first part section 103 represents an inwardly folded cover section and is preferably designed flat. The second part sections 105 are connected to the inwardly facing sides of the first part section 103 and connect them to the securing ring 17. The second part sections 105 can be designed folded or flat and are oriented diagonally inwardly relative to one another. The lower edge 99 of the groove 95 corresponds to the free edges of the first part section 103 and the second part sections 105 and lies in a plane 107, which is shown in FIG. 7. The plane 107 is preferably oriented perpendicular to the axis of rotation 85 of the container neck 29. The described design features of the wall section 101 have the advantage that the wall section 101 with the entire lower edge 99 can be supported on the annular projection 35 and does not yield upwards in the event of an axial tensile force. In this way, the securing ring 17 is held in the projection 35 without being lost and can only be removed from the projection 35 by breaking it off. By providing the second partial sections 105, a movement of the first partial section 103 in a radially inward direction is prevented. However, a movement of the first partial section 103 in a radially outward direction is possible. This movement is flexible and the wall section 101 returns to its initial, inwardly inclined position after being pressed radially outwards. This can have the additional advantage that the securing ring 17 can be easily removed and fitted with little force into the container neck 29 together with the threaded part 15. The demoulding of an injection mould and the fitting into the neck 29 of the container can be carried out by the flexibility of the wall section 101, without there being any danger of damaging the wall section 101.

It is preferable that the inclined wall sections 101 have a reduced wall thickness compared to the rest of the securing ring 17. Figure 7 shows that the region of the lower edge 99 has the lowest wall thickness. Thus, the above-described flexibility of the radially outward wall section 101 is further improved. The wall thickness of the wall section 101 is reduced, starting from the lower edge 99 linearly downwards.

In Figures 6 and 7 the securing ring 17 is shown without the threaded part 15. It is clearly visible in Figures 6 and 7 that an annular rim 109 is formed above the grooves 95 in the securing ring 17, on which the upper edges 97 are located.

In Fig. 7, a first and second angle of inclination 111, 113 are marked. The first angle of inclination 111 indicates the inclination of the first partial section 103 relative to the plane of the lower edge 99. The first angle of inclination 111 has dimensions of between 60 and 80 degrees and preferably between 65 and 75 degrees. The greater the first angle of inclination 111, the better the stability of the wall sections 101 against the application of vertical forces or axial tensile forces caused by the unscrewing of the threaded part 15. However, the first angle of inclination 111 is not allowed to be very large, since otherwise the annular projection 35 could not be sufficiently gripped.

The second inclination angle 113 indicates the inclination of the groove 95 relative to the plane of the lower edge 109. The connecting straight line 115, which represents the inclination of the groove 95, is a connection of the upper edge 97 to the lower edge 99 in a plane, which extends through the axis of rotation 85 and the connecting straight line 115. The second inclination angle 113 is included in the connecting straight line 115 and the plane 107. The second inclination angle 113 has dimensions between 30 and 50 degrees and preferably between 35 and 45 degrees. The larger the second inclination angle 113, the easier it is to remove the sealing ring 17.

An inwardly projecting inner cone 87 (FIG. 1), e.g. in the form of a sealing cylinder or sealing ring, is preferably formed on the cover plate 21 of the screw portion 15. The inner cone 87 is shaped to cooperate hermetically with the inner wall 89 of the container neck 29 in the closed position. The closing cap 11 can therefore act as a so-called “sealing cone” and effectively seals the container neck 29.

The closure cap 11 is made of a plastic. PP and HDPE are among the preferred plastics. Legends:

11 Closing cover

13 Container, bottle

15 Part of thread

17 Guarantee ring

19a First retention band

19b Second retention band

21 Threaded part cover plate

23 First cylindrical cover

25 Open edge

27 Internal thread

28 Vessel body

29 Vessel neck

31 External thread

33 Discharge opening

35 Annular-shaped protrusion

37 Outgoing

39 First end of the first retaining band

41 Second end of the first retaining band

43 First edge of the first retention band

45 Second edge of the first retention band

47 First default breaking nerve

49 Second default breaking nerve

51 Third end of the second retaining band

53 Fourth end of the second retaining band

55 Third edge of the second retention band

57 Fourth edge of the second retention band

59 Third default breaking nerve

61 Default fourth break nerve

63 Nerves of guarantee

65 Center point of the closing cover

67 First opening angle

69 Second opening angle

71 Third opening angle

73 Fourth opening angle

75 First narrowing

77 Second narrowing

79 First notch

81 Second notch

83 Axis of rotation of the neck of the vessel

85 Rotation axis of the thread part

87 Inner cone

89 Interior wall

91 Support ring, highlight

93 Vessel shoulder

95 Slots

97 Upper song

99 Lower song

101 Wall Section

103 First partial section

105 Second partial sections

107 Plan

109 Annular flange

111 First angle of inclination

113 Second tilt angle

115 Straight line

Claims (25)

i. Closing lid (11) for closing the pouring opening (33) of a container (13), comprising - a cylindrical thread part (15) with an open edge (25) and an internal thread (27), which can cooperate with an external thread (31) of a container neck (29) of the container (13), - a securing ring (17) which is designed to be held in a projection (35) formed on the container neck (29), - a plurality of securing ribs (63) connecting the securing ring (17) to the open edge (25) in a detachable manner, - a first retaining band (19a) with a first and a second end (39, 41) and a first and a second edge (43, 45), wherein the first end (39) is fixedly attached to the open edge (25) of the thread part (15) and the second end (41) is fixedly attached to the securing ring (17) and - a second retaining band (19b) with a third and fourth end (51,53) and a third and fourth edge (55,57), where - the third end (51) is fixedly attached to the open edge (25) of the threaded part (15); - the fourth end (53) is fixedly attached to the security ring (17) and - the second end (41) is arranged essentially diametrically opposite to the fourth end (53) in the circular path of the securing ring (17) before the threaded part (15) is opened for the first time, characterized in that, before opening the closing cap (11) for the first time, the first, second, third and fourth ends (39,41,51,53) are arranged one after the other in increasing order in the circular path of the guarantee ring (17) in a counterclockwise direction, when the internal thread (27) and the external thread (31) are designed as right-hand threads. 2. Closing cap according to claim 1, characterized in that, before opening the threaded part for the first time, the first end is arranged essentially diametrically opposite to the third end (51) in the circular path of the security ring. 3. Closing cap according to one of the preceding claims, characterized in that the first edge (43) is detachably connected to the open edge (25) of the threaded part (15) by means of at least one first predetermined breaking rib (47) and the second edge (45) is detachably connected to the securing ring (17) by means of at least one second predetermined breaking rib (49), and in that the third edge (55) is detachably connected to the open edge (25) of the threaded part (15) by means of at least one third predetermined breaking rib (59) and the fourth edge (57) is detachably connected to the securing ring (17) by means of at least one fourth predetermined breaking rib (61). 4. Closing cap according to one of the preceding claims, characterized in that in the closed state of the screw part, the first and third ends (39, 51) enclose a first opening angle (67) of at least 170 degrees and at most 190 degrees and preferably at least 175 and at most 185 degrees with respect to the central point (65) of the closing cap (11) as apex; and the second and fourth ends (41, 53) enclose a second opening angle (69) of at least 170 degrees and at most 190 degrees and preferably at least 175 and at most 185 degrees with respect to the central point (65) of the closing cap (11) as apex. 5. Closing cover according to one of the preceding claims, characterized in that the first and second ends (39, 41) enclose a third opening angle (71) of at least 110 degrees and at most 140 degrees, and preferably at least 120 and at most 130 degrees with reference to the central point (65) of the closing cover (11) as a vertex. 6. Closing cover according to one of the preceding claims, characterized in that the third and fourth ends (51, 53) enclose a fourth opening angle (73) of at least 110 degrees and at most 140 degrees, and preferably at least 120 and at most 130 degrees with reference to the central point (65) of the closing cover (11) as the vertex. 7. Closing cover according to one of claims 5 or 6, characterized in that the third and fourth opening angles (71, 73) are of the same size, so that the first and second retaining bands (19a, 19b) have the same length. 8. Closing cap according to one of the preceding claims, characterized in that the cross section of the first and second retaining bands (19a, 19b) is constant along the length of the first and second retaining bands (19a, 19b). 9. Closing cover according to one of the preceding claims, characterized in that the security ribs (63) are arranged at regular distances along the open edge (25). 10. Closing cap according to one of claims 3 to 9, characterized in that the first, second, third and fourth predetermined breaking ribs (47, 49, 59, 61) are arranged at regular distances along the first and second or the third and fourth edges (43, 45, 55, 57). 11. Closing cover according to one of the preceding claims, characterized in that a first and a second recess (79, 81) are provided in the edge of the securing ring (17) facing the first and the second retaining band (19a, 19b) for receiving the first and the second retaining band (19a, 19b). 12. Closing cover according to one of the preceding claims, characterized in that the first and/or second end (39, 41) of the first retaining band (19a) and the third and/or fourth end (51, 53) of the second retaining band (19b) can be folded along predefined folding lines (75, 77). 13. Closing cap according to one of the preceding claims, characterized in that an inwardly projecting inner cone, e.g. in the form of a sealing cylinder or a sealing ring, is formed on the cover plate (21) of the screw part (15), which is designed to cooperate hermetically with the inner wall of the container neck (29) in the closed position. 14. Closing cap according to one of the preceding claims, characterized in that the first and second retaining bands (19a, 19b) have a width of between 3 mm and 7 mm and preferably a width of between 4 mm and 5 mm. 15. Closing cap according to one of the preceding claims, characterized in that the closing cap (11) is configured such that it can interact with a standardized container neck (29) with an external thread (31) and an annular projection (35). 16. Closing cap according to one of the preceding claims, characterized in that the closing cap (11) is made of a plastic material, preferably PP or HDPE. 17. Closing cap according to one of claims 3 to 16, characterized in that the threaded part (15), the sealing ring (17), the first and second retaining band, the sealing ribs (64) and the at least first, second, third and fourth predetermined breaking rib (47,49,59,61) are manufactured in one piece. 18. Closing cap according to one of the preceding claims, characterized in that the sealing ring (17) has grooves (95) arranged in a circumferential distribution with an upper edge (97) and a lower edge (99), the upper edge (97) being formed by a section of the sealing ring (17) running in the form of a circular arc and the lower edge (99) being formed by a wall section (101) inclined in a radially inward direction, and in that the lower edge (99) of each groove (95) forms projections (37) with which coupling agents are formed for a positive-lock connection with the annular projection (35). 19. Container (13), which presents - a container body (28), - a container neck (29) connecting to the container body (28), - an external thread (31) formed on the neck (29) of the container and - a closing lid (11) for closing a pouring opening (32) provided inside the neck (29) of the container, wherein the closing lid (11) has - a first retaining band (19a) with a first and a second end (39, 41), and a first and a second edge (43, 45), wherein the first edge (43) is connected to the open edge (25) of the thread part (15) in a detachable manner by means of at least one first predetermined breaking rib (47) and the second edge (49) is connected to the securing ring (17) in a detachable manner by means of at least one second predetermined breaking rib (49), characterized in that the closing cap is a closing cap (11) according to one of claims 1 to 18. 20. Container according to claim 19, characterized in that a projection (91) is formed on the container neck (29), which is configured below the securing ring (17) or is formed by the securing ring (17) and the length of the first and second retaining bands (19a, 19b) is dimensioned such that the screw part (15) can be lifted from a closed position after being unscrewed from the container neck (29) and can be positioned below the projection (91) in an open position, wherein the screw part (15) is held in the open position by the first and second retaining bands (19a, 19b), rests with the open edge (25) at least partially on the container body (28) and rests on the projection (91). 21. Container according to claim 20, characterized in that the projection is a support ring (91), which is formed at the transition from the container neck (29) to the container body (28). 22. Container according to one of claims 20 or 21, characterised in that the length of the first and second retaining bands (19a, 19b) is dimensioned such that the screw part (15) can be lifted from a closed position after being unscrewed from the container neck (29) and can be brought into an open position, in which the cover plate (21) lying in the open position rests on the outer thread (28) and on the shoulder (91). 23. Container according to one of claims 19 to 22, characterized in that the first and second retaining bands (19a, 19b) are free from elastic deformation in the open position of the screw part (15). 24. Container according to one of claims 19 to 23, characterized in that the closing lid (11) can be snapped onto the neck of the container. 25. Container according to one of claims 19 to 24, characterized in that the position of the securing ring (17) relative to the annular projection (35) of the container neck (29) can be changed in the axial direction and in the circumferential direction.