Multi-component closure

Abstract

A multi-component closure is proposed, comprising a base (2) having a tab-like holder (21) and a neck (22) integrally provided on the base, the neck comprising a neck opening (23), a collar (24) surrounding the neck (22) and a first locking element (25) designed between the neck opening (23) and the collar (24). A screw cap (3) is provided with a retaining ring (31) and a closure cap (33) attached to the retaining ring by a hinge (32), wherein the retaining ring (31) is held rotatable by the collar (24) and wherein the closure cap (33) comprises at least a second locking element (34) which, in a closed state, acts together with the at least one first locking element (25) to close the neck opening (23) in a liquid-tight manner by the closure cap (33) and, in the closed state, is opened by turning the screw cap (3) around the neck (22) in a first direction.

Description

Technical Field

[0001] This disclosure claims priority to German application No. 10 2020 118 295.3, filed on July 10, 2020, the contents of which are incorporated herein by reference. Background Technology

[0002] Liquids (especially potable liquids) can be stored not only in glass bottles, but also in PET (polyethylene terephthalate) bottles and cardboard boxes. In some respects, they have a smaller eco-footprint and, for example, can be at least partially recycled. Different closures are used to seal the packaging. To further reduce the eco-footprint, various improvements are needed, both in terms of reducing material usage and increasing recyclability. This involves not only the cardboard packaging and the packaging itself, but also the closures. Summary of the Invention

[0003] This paper presents a multi-part closure, particularly for cardboard packaging containing liquids, especially cooled, drinkable, and perishable liquids. In one aspect, the multi-part closure includes a bottom having a sheet-like support and a neck integrally disposed thereon. The neck can also be described as a collar. The neck includes a neck opening, a support ring surrounding the neck, and at least one first locking element. The locking element is disposed between the neck opening and the support ring. The multi-part closure further includes a threaded cap with a retaining ring and a closure attached to the retaining ring by a hinge. The retaining ring is disposed at least partially around the neck between the support and the support ring in such a way that the retaining ring can rotate around the neck but is not separable. In the following disclosure, the term "not separable" should be understood as the interaction between two elements that can be separated by force or damage or even destruction of at least one element.

[0004] Based on the proposed principle, the cap includes at least one second locking element that interacts with at least one first locking element in the closed state to liquid-tightly seal the neck opening. Furthermore, the threaded cap is designed such that rotation of the threaded cap about the neck in a first direction in the closed state will open the threaded cap.

[0005] By means of the proposed multi-part closure, all elements of the threaded cap remain coupled to the bottom even after multiple opening and closing of the container, thus facilitating easier handling along with the packaging. Because the cap remains coupled to the bottom, two elements can be arranged together. The closure according to the invention can be mounted on and welded to cardboard packaging. However, the closure can also be mounted on or used with film bags. Liquids or solids such as powders or granules can also be poured out through the closure. Therefore, this multi-part closure is suitable for a variety of paper- or plastic-based packaging and different filling materials.

[0006] In one aspect, the retaining ring is connected to the cap via a plurality of predetermined braking points forming the connecting web, thereby generating visual evidence of the closure being open. Furthermore, to securely and particularly inseparably couple the retaining ring to the bottom in the aforementioned sense, in one aspect it may be specified that the support ring is designed such that its side facing the sheet-like support is substantially parallel to the support. The side facing away from the sheet-like support may extend obliquely relative to the support. Thus, the parallel side of the support ring provides an effective boundary for the retaining ring and prevents disengagement or general displacement of the retaining ring in the neck opening direction (the so-called z-direction). Sufficient space may be allowed between the support and the support ring such that the retaining ring includes a small gap in the z-direction. Thus, the retaining ring is configured to be rotatable but still not displaceable.

[0007] In another aspect, the retaining ring includes multiple retaining elements designed to engage with the support ring to allow the retaining ring to rotate substantially inseparably around the neck. The retaining elements may be pivotally attached to the retaining ring at one end, with their other end facing the side of the support ring facing the sheet support. Optionally, the axis of rotation of the retaining element may face the sheet support. In intended use, and particularly in manufacturing, the retaining ring is fitted onto the support ring from the neck opening, such that the retaining element is initially pressed through the support ring on the retaining ring, and once the retaining ring is fully fitted onto the support ring, the retaining element engages along the side facing the support.

[0008] In another aspect, the first locking element includes at least one male threaded section with a first pitch. The second locking element includes at least one female threaded section with a second pitch. The first and second pitches may be different. In particular, the second pitch is slightly smaller than the first pitch, such that in the closed state, force is applied to the cap by the interlocking of the threads, which uses the cap to liquid-tightly seal the neck opening.

[0009] In one embodiment, the first locking element has 4 to 6 male threaded sections, and the second locking element has 2 female threaded sections. The female threads, relative to the corresponding axis of symmetry passing through the midpoint of the cap, are substantially perpendicular to the hinge and / or face each other.

[0010] Alternatively, at least one first locking element may include a male threaded section, and at least one second locking element may include a female threaded section, wherein the female thread is substantially opposite to the hinge.

[0011] The lengths of male and female threads depend on the number of threads each. Typically, for multiple male thread sections, these can correspond to 0.25 to 0.45 times the neck circumference, particularly in the range of 0.27 to 0.35 times the neck circumference. For a single male thread, the length can also correspond to 0.8 to 1.8 times the neck circumference. Similarly, the length of the female thread can generally correspond to 0.1 to 0.3 times (particularly in the range of 0.1 to 0.15 times) the circumference of the inner side of the cap on which the female thread is located, or it can also correspond to 0.33 to 0.66 times (particularly in the range of 0.55 to 0.65 times). Generally, the selection of length and pitch ensures that the force generated by the thread in the closed state effectively seals the opening.

[0012] In another aspect, the first locking element includes at least one connecting male threaded section extending along at least one male threaded section and designed to guide at least one female threaded section among the male threaded sections during the rotational movement of the cap. Therefore, the female threaded section can be more easily "clamped" when the closure closes the opening. For this purpose, the pitch of the connecting male threaded section can be specified to be different from a first pitch, particularly smaller than the first pitch. For example, the pitch of the connecting male threaded section can correspond to a second pitch, i.e., the pitch of the female threaded section. Alternatively, the pitch of the connecting male threaded section can be varied. Furthermore, the clamping and guiding of the female threaded section can thus be improved, and a tactile feedback can be provided to the user when the closure is clamped.

[0013] To further improve the tactile feedback and prevent accidental opening near the corresponding end, a locking cam can be provided in the male thread section. This is designed to engage in a recess within the female thread when the cap is closed. Thus, it provides tactile feedback to the user indicating "closed" while preventing accidental opening. Alternatively, the locking cam can also be located at the recesses in both the male and female thread sections.

[0014] In another embodiment, the first locking element and the second locking element form a bayonet lock. In one aspect of the invention, at least one first locking section includes a plurality of longitudinal slots, with transverse slots extending at right angles to their respective ends. At least one second locking element includes a plurality of protrusions configured such that they engage in the longitudinal and dedicated transverse slots during a longitudinal and subsequent rotational movement of the cap in a first direction opposite to the second direction. Thus, the cap can be effectively closed with a bayonet lock and can be easily reopened. The plurality of longitudinal slots can be symmetrically arranged around the neck. In one embodiment, two longitudinal slots have transverse slots, each extending at right angles, wherein the protrusions are arranged substantially perpendicular to the hinge relative to a corresponding axis of symmetry passing through the midpoint of the cap. The transverse slots can also be arranged to face each other. In this embodiment, sufficient closing force is generated, preventing accidental opening. In another embodiment, the protrusions are located inside the cap, substantially opposite the hinge.

[0015] Different embodiments relate to embodiments of the bayonet locking element. In one aspect, a plurality of longitudinal slots extend from the neck opening in a direction toward the support. Furthermore, the plurality of longitudinal slots may open toward the neck opening, i.e., the longitudinal slots include a width that at least exactly corresponds to the extension of the protrusion, and optionally increases in the area of ​​the opening. Therefore, during rotational closure, the protrusion on the cap can be more easily "clamped".

[0016] In another aspect, the first locking element includes a locking cam positioned at the interface between the longitudinal and transverse slots, thus providing clearance to prevent the cap from rotating in the first or second direction while closed. Therefore, a liquid-tight cap is also possible by means of a bayonet lock. Consequently, it can be further specified that the length of the protrusion substantially corresponds to the length of the transverse slot, such that the cap or its protrusion is held in a defined position by the boundary of the cross-section and the locking cam, a position that can only be intentionally changed by a user with a limited force. Similarly, the height of the protrusion corresponds to the width of one or more transverse slots.

[0017] Another aspect relates to the sealing of the cap to achieve and ensure a liquid-tight seal. In one aspect, the cap includes a sealing ring that engages in a liquid-tight manner in a neck opening when the cap is closed. For this purpose, in various embodiments, the outer diameter of the sealing ring may be slightly larger than the neck opening. Furthermore, the neck opening may include an inwardly curved flap designed to be flexible and therefore flush with the sealing ring.

[0018] To prevent tilting during the opening and closing of the neck opening via the cap, in some aspects, the sealing ring is specified to include a height that increases with distance from the hinge. In other words, the height of the sealing ring is not uniform but varies depending on its position and distance from the hinge. Based on the height of the sealing ring, the distance from the collar on the cap to the lower edge of the annulus can be determined, which extends furthest in the neck when closed. Therefore, in some aspects, the sealing ring is designed such that, relative to a cross-section along a plane extending through the midpoint of the hinge and the cap, the hinge-facing portion of the sealing ring has a smaller height than the hinge-removing portion. This different height results in an angle along this cross-section relative to an axis parallel to the cap, ranging from 1.5° to 5°, particularly approximately 1.7° to 2.3°.

[0019] On another front, the side of the sealing ring facing the neck opening is shorter than the inner side of the sealing ring. Therefore, upon closure, friction is generated along the neck opening by the sealing ring, thus achieving a tight seal, especially when the radii of the sealing ring and the neck opening are different. This also prevents the sealing ring from tilting during closure.

[0020] Other aspects involve hinges, which in one embodiment include butterfly hinges. In some aspects, the hinge includes a flexible joint disposed between the retaining ring and the cap, the flexible joint being designed integrally with the retaining ring and the cap. This allows the threaded cap to be formed during injection molding, where the same material can be used, particularly for the individual components of the closure. The hinge may include a first hinge plate that forms part of the retaining ring. A second hinge plate, in turn, forms part of the cap, with the joint disposed between the two hinge plates. Thus, in the region of the hinge, the retaining ring (or more precisely, the first hinge plate) may also be positioned above the retaining ring. Furthermore, this aspect helps improve opening and closing and reduces the risk of tilting during closure.

[0021] In another aspect, the hinge is configured to hold the cap in the open position, allowing it to rotate at least 90° around the hinge in the closed position, particularly in the range of 115° to 145°, and especially more than 120°. In other words, the hinge is configured to apply force to the cap after rotation about the joint angle and passing a predetermined position, such that the cap cannot rotate back beyond that position without further force. This ensures, for example, that the cap remains open and does not accidentally rotate back while in the opened state during the pouring of liquid from the cardboard packaging. In one aspect, the hinge may also include at least one snap-fit ​​element configured to hold the cap above a predetermined rotation angle about the flexible joint. The rotation can be in the range of 80° to 100°, particularly about 90°. When the rotation exceeds this angle, the closure springs open and remains in the spring-open position.

[0022] In one embodiment, a snap-fit ​​element is attached to a retaining ring. Furthermore, in some aspects, at least one snap-fit ​​element may be located within a recess in the retaining ring, and the axis of rotation of the flexible connector extends above this recess. At least one snap-fit ​​element may be pre-tensioned such that the open state of the cap represents a relaxed state relative to the pre-tensioned state. At this point, the closed state may also represent the relaxed state. Therefore, the snap-fit ​​element may be configured such that it is pulled increasingly tight during the opening process (i.e., during the rotational movement of the cap around the connector) until a limit point corresponding to the aforementioned position is reached. When this limit point is exceeded, the snap-fit ​​element springs back to the relaxed state, keeping the cap open. This effect can be achieved using an element in a tensioned state.

[0023] To prevent tilting during closure (or more precisely, reclosure), the axis of rotation of the flexible joint can be closer to the plane spanned by the neck opening than the first and second locking elements. In other words, the joint (viewed from the bracket) is therefore located at least above the height of either the first or second locking element. In one aspect, the flexible joint extends at the height of the lower edge of the sealing ring, i.e., at the height of the edge of the sealing ring facing the bracket.

[0024] In one embodiment, particularly within the area of ​​the retaining ring, the neck opening includes an outer diameter smaller than that of the underside of the neck. Furthermore, in some aspects, the cap may include grooves having vertically extending webs on its circumferential sides. This allows for better clamping of the cap and better control of the force applied to it by the user. Additionally, the number of webs per unit length can vary. This further facilitates ease of use through tactile feedback. Attached Figure Description

[0025] Different aspects of the invention will now be described in detail with reference to several embodiments. Therefore, the accompanying drawings will now be described:

[0026] Figure 1 A first embodiment of a multi-component closure in a closed state, based on the proposed principle, is shown;

[0027] Figure 2 A multi-part closure on a cardboard package in both open and unfolded states is shown to illustrate some aspects;

[0028] Figures 3A to 3D Different side views and cross-sectional views of the multi-component closure member in the closed state according to the foregoing exemplary embodiments are shown;

[0029] Figures 4A to 4C Different side views and cross-sectional views of the components of the multi-part closure in the open state are shown;

[0030] Figures 5A to 5C Different side views and cross-sectional views of the multi-component closure in the unfolded state according to a first exemplary embodiment are shown to illustrate some aspects;

[0031] Figure 6 A view of the cover according to a first exemplary embodiment is shown to illustrate some aspects;

[0032] Figure 7 A second embodiment of a multi-component closure in a closed state, based on the proposed principle, is shown;

[0033] Figure 8 A second embodiment of the multi-part closure is shown in both open and unfolded states to illustrate some aspects;

[0034] Figure 9 A side view of the threaded cap of the second embodiment is shown;

[0035] Figure 10A and Figure 10B The top and bottom perspective views of the multi-component closure of the second embodiment are shown;

[0036] Figures 11A to 11D Different side views and cross-sectional views of the multi-component closure member in the closed state according to the second embodiment are shown;

[0037] Figure 12A and Figure 12B Two cross-sectional views of the multi-component closure according to the second embodiment in the open state are shown;

[0038] Figure 13A and Figure 13C Three cross-sectional views of the multi-component closure according to the second embodiment in the open state are shown;

[0039] Figure 14 A view of the cover of the second embodiment is shown to illustrate some aspects;

[0040] Figure 15A and Figure 15B The multi-component closure in the third embodiment, in both the closed and open / expanded states, is shown to illustrate some aspects;

[0041] Figure 16 Another embodiment of a multi-part threaded cap is shown.

[0042] It goes without saying that the various aspects of the embodiments shown in the above figures can be readily combined with each other without contradicting the principles of the invention. The sizes of the various figures and aspects are not necessarily accurate, but the relative importance between individual elements should be substantially correct. In particular, the terms "directly above," "above," "directly below," "below," "larger," "smaller," and similar terms are correctly shown with respect to elements in the figures. In this respect, these relationships between elements can be extracted based on the figures. Detailed Implementation

[0043] Figure 1 and Figure 2 A multi-part closure for cardboard or carton packaging in both closed and open states is shown, based on the proposed principles. The multi-part closure is manufactured using an injection molding process from two parts (bottom 2 and threaded cap 3). The bottom can then be welded or glued to the cardboard packaging, for example, directly above the opening. Then, in a final step, the threaded cap is placed onto the cardboard packaging filled with liquid. Alternatively, the bottom and threaded cap can be pre-stacked together, and the multi-part closure is then welded together with the packaging directly above the opening.

[0044] The multi-part closure includes a bottom with a sheet-like support 1. In this exemplary embodiment, the support 1 is designed to be circular, but the support can also have other forms. Neck 22 (as shown) Figure 2 As shown, it is integrated into the sheet-like support 1.

[0045] The multi-part closure further includes a threaded cap 3 having a cover 33 and a retaining ring 31. The retaining ring 31 and the cover 33 are interconnected by a hinge 32. Furthermore, the threaded cap 3, having its components, is designed as a single piece and is manufactured, for example, together with the bottom, by an injection molding process. In the perspective view shown herein, the retaining ring 31 further includes a hinge plate 315 on which a connector of the closure 32 is directly molded. The connector is in turn connected to a second hinge plate 335, which forms part of the cover 33. Additionally, a groove 9 is attached to the cover, which provides visual feedback to the user and facilitates better gripping during the opening or closing of the cover 33 by rotational movement. For example, slightly different grooves (as shown) ensure both visual and tactile feedback, indicating to the user the appropriate gripping position for opening and closing the cover. Furthermore, in some embodiments, different grooves can save material.

[0046] exist Figure 2 In the open state, the other components of the multi-part closure become visible. Therefore, the neck 22 provided on the sheet-like support 1 includes an opening 23 with an inwardly folded flexible flap 230. Furthermore, in this embodiment, male threads are provided on the outer side of the neck 22 as a plurality of male thread segments 250 serving as a first locking element 25. Various aspects of this locking element are mentioned in the following figures.

[0047] The threaded cap 3 is positioned with its bottom between the plane of the support 21 and the retainer ring 24. The retainer ring 24 is part of the neck 22. Therefore, the retaining ring 31 and the retainer ring 24 are designed such that the retaining ring can rotate freely between the retainer ring and the support, but cannot move beyond the retainer ring. In this respect, the retaining ring 31 is thus restricted to movement in the z-direction, i.e., towards the neck opening 23. The retaining ring is smooth, and therefore, unlike the cap, it does not include grooves. This saves material on the one hand, and on the other hand, indicates a visual separation between the cap and the lock. The cap 33 includes a second locking element 34 in the form of two threaded sections 340 on its inner side. A rast 355 is provided at one end of each female threaded section, the function of which will be described below. Furthermore, the cap 33 includes a sealing ring 36.

[0048] In the text shown Figure 2 In this embodiment, two female threaded sections 340 are provided, which are arranged facing each other on the inner side of the cap about an axis of symmetry. The axis of symmetry is an axis extending through the middle of the hinge 32 and the midpoint of the cap 33. During the rotation of the threaded cap 3 about the neck 22 or the neck opening 23, the second female threaded section 340 engages with the corresponding outer section 250, so that the sealing ring 36 and the neck opening 23 form a liquid-tight connection.

[0049] exist Figure 2 In this example, the multi-part closure is positioned on the upper side of the cardboard box or cardboard package and is welded or glued to the cardboard via a bracket 21. Different colored elements can be installed on the cardboard package, which, in addition to aesthetics, can also indicate to the user the potential direction for rotation to open and / or close. The dimensions of the carton opening and the closure can be adapted to the dimensions of the cardboard package and are freely selectable. The same applies to the folding of the cardboard package, its form, and embodiments. In some embodiments, cardboard flaps are provided (see...). Figure 2 When multiple cardboard packages are stacked on top of each other, the cardboard flap reduces pressure on the closure. Furthermore, the flap indicates the pouring direction. In this respect, the bottom of the closure is then attached to the carton in such a way that the lid can be fully opened in the direction of the cardboard package flap.

[0050] Figures 3A to 3D A side view of the multi-component closure or its components and a cross-sectional view available thereon are shown. Figure 3A The bottom of a sheet-like support 21 and a neck 22 attached thereto are shown. The neck 22 has a lower portion, the end of which is defined by a retainer 24. As shown in this view, the lower portion is configured such that its diameter slightly tapers in the direction toward the retainer 24. Therefore, the retainer has a relatively large holding area on its side facing the plane of the support 21, for example, Figure 3C The cross-section is shown. Therefore, the retaining element of the retaining ring 31 can be engaged in the retaining area or on the underside of the support ring 24. The support ring 24 is configured to have a bevel in the direction toward the neck opening 23.

[0051] The neck 22 further includes a plurality of other male threads 250 arranged circumferentially around the neck. Each male thread 250 includes a constant pitch, which may depend, for example, on the number of male threads, the thickness of individual male threads, and the distance between the male threads. In this exemplary embodiment, the pitch may be indicated, for example, by the parameter P=8. Each external segment 250 includes a length L, which may also be expressed as a relationship to the circumference of the neck. Thus, the male threads are positioned such that they at least partially overlap, as shown. Thus, during the rotational movement of the cap, the female threads are guided through the different male threads, causing the cap or sealing ring to interact with the neck opening and to seal the neck opening in a liquid-tight manner.

[0052] Figure 3B A side view of the multi-part closure in its closed configuration is shown. The threaded cap 3 is positioned on the neck 22, simultaneously closing the closure. For this purpose, the retaining ring includes multiple connecting webs (not shown or visible here), through which the cap 33 is held at the retaining ring 31 before initial opening. A hinge plate 315 is also shown on the right side of the retaining ring, with… Figure 3A In direct comparison, the hinge plate appears above the retainer and forms part of the hinge. The cover also includes a groove 9, which consists of multiple vertical webs surrounding the cover 33, but its density is variable. Thus, for example, the gripping position can be visually indicated to the user.

[0053] Figure 3C and Figure 3D Cross-sectional views are shown in two different directions: along the plane passing through hinge 32 and along the plane parallel to the hinge. Figure 3C As shown, the retaining ring 31 includes multiple retaining elements 311 on both sides, which are designed to engage with the support ring to keep the retaining ring substantially inseparable from rotation around the neck. Furthermore, one end of each element (i.e., the end facing the support) is pivotally attached to the retaining ring 31. The other end of the retaining element 311 faces the side of the support ring 24 facing the sheet support. Therefore, the lower side of the support ring 24 acts on the rear element 311 in the z-direction of movement of the retaining ring 31, effectively preventing movement. For sequential fabrication, the retaining elements on the retaining ring are first folded, and then the retaining ring, together with the cap 33 attached thereto, is inserted across the neck opening. Thus, the retaining elements move across the support ring 24 in the direction toward the support surface 21 until the retaining elements engage in the gap between the support ring 24 and the support surface 21.

[0054] In addition to the retainer 24, the neck 22 also includes a first locking element 25, shown in the cross-sectional view, which is designed with a male thread having several segments 250. Figure 3D As can be clearly seen, the second locking element 34 of the cap 33 engages between the two male threaded sections 250, so that the cap effectively closes the neck opening.

[0055] See you again Figure 3C The threaded cap also includes a hinge 32, shown here on the right. The hinge 32 (specifically, the flexible joint) is positioned above the locking elements 25 or 24. In this respect, the above means that the distance from the supporting surface is greater than the distance between the corresponding locking element and the supporting surface. Due to the position of the flexible joint, the cap can be easily folded after opening and can also be closed again, while the sealing ring 36 does not tilt in the neck opening 23.

[0056] Furthermore, the sealing ring 36 includes two special features. Firstly, its height (i.e., the distance from the inside of the cap to the lowest point of the corresponding sealing ring) depends on its distance from the flexible joint of the hinge 32, such as, for example, in… Figure 3CThis can be seen in the cross-section. The region 36b of the sealing ring near the hinge 32 has a slightly lower height than region 36a of the sealing ring. Therefore, as shown, the height increases with increasing distance from the hinge. In this view, the angle between the lower edges of region 36a and region 36b is approximately 2° to 3° relative to a plane parallel to the support surface 21, and approximately 2.7° in the specific exemplary embodiment. This angle can also be larger, i.e., the “height difference” in this cross-sectional view can be larger. However, the angle should be at least 1.5° to prevent tilting. It should also be mentioned that a larger height difference may not necessarily mean an improvement in opening and closing, but it must consume additional material. For the provided opening, a range from 1.5° to approximately 4° has proven to be a good compromise. In this case, it should be mentioned that the angle also depends on the size of the opening and the distance between the hinge and the opening. The smaller the distance, the larger the angle should be. The same applies to the height of the hinge relative to the upper edge of the neck opening. If the hinge is at the same height or slightly higher, the angle can be smaller, even 0°. The lower the hinge is relative to the upper edge of the neck opening, the greater the angle should be.

[0057] Because the varying height of the sealing ring depends on its distance from the hinge, the risk of tilting is further reduced during the folding and opening of the cap. In particular, it ensures that the lower region of the sealing ring engages simultaneously with the neck opening in every situation.

[0058] The second distinctive feature of the sealing ring lies in the shape of its lower edge, which is slanted, as shown below. Figure 3C and Figure 3D As shown. In other words, the outer surface of the sealing ring is slightly smaller than the inner surface, creating an outward chamfer. Therefore, the sealing ring crosses the neck opening 23 during its inward folding. Furthermore, to ensure a liquid-tight seal on the threaded cap, the diameter of the sealing ring 36 is designed to be slightly larger than the corresponding diameter of the neck opening or flap 230. Therefore, as... Figure 3C and Figure 3D As shown, during the closing of the cap, the flap 230 of the neck opening is pressed slightly downwards and positioned flush with the outside of the sealing ring 36. This achieves a complete seal against the liquid.

[0059] Figures 4A to 4C The multi-part closure is shown in an open or unscrewed but not folded open state. Figure 4A This is a side view of the multi-part closure. Through rotational movement, the first locking element 25 guides the second locking element toward the neck opening, thereby causing the connecting web 310 between the retaining ring 31 and the cap 33 to split. The threaded cap 3 rotates by the rotational movement of its retaining ring 31 about the neck. Therefore, a slight rotation of the cap about the flexible joint of the hinge 32 is also achieved.

[0060] Figure 4B A cross-section of the multi-part closure is shown parallel to the plane passing through the flexible joint. It can be clearly seen that, through the rotational movement of the threaded cap, the outer end of the inner ring 36 in the cap 33 abuts against the inward flap of the neck opening 23. Since the varying heights of the sealing ring 36 depend on its distance from the flexible joint of the hinge 32, the sealing ring 36 remains in contact around the neck opening, thus still adequately sealing the neck opening. In this position, it can also be seen that, with the opening and subsequent folding of the closure, the sealing ring engages substantially simultaneously at all positions within the neck opening.

[0061] Figure 4C The cross-section of this embodiment in a plane parallel to the flexible joint is shown. The end of the sealing ring 36 is substantially at the height of the neck opening. Meanwhile, the female threaded section 340 is freely positioned on both sides, allowing the cap to rotate about the flexible joint of the hinge.

[0062] Figures 5A to 5C The diagram shows the unfolded shape, where the lid opens approximately 120° relative to a plane parallel to the support surface 21. The lid 33 is also held in this position by hinge 32, allowing liquid to pass through the neck opening with the corresponding movement of the cardboard box, while preventing the lid from folding backward due to gravity. Furthermore, in Figure 5A The diagram illustrates the possible placement of the closure on a cardboard package with a herringbone top shape. Other cardboard packages are also possible. The herringbone top of the cardboard package includes a ridge 201, with slopes 200 closely contacting and adhering to each other thereon. An opening is provided on one of the surfaces 200, onto which the multi-part closure is mounted.

[0063] Figure 5B A cross-sectional view is shown, parallel to a plane passing through the flexible joint of hinge 32. Figure 5C The diagram shows a corresponding cross-section through a plane parallel to the flexible joint of the hinge. Therefore, the cap 33 is located behind the cross-sectional plane. The sealing ring 36 and the two female threaded sections 340 are clearly visible. These are arranged opposite each other.

[0064] Figure 5A and Figure 3A The pitch ratio of the male thread section shown Figure 5C , 5B and Figure 2The female thread section shown has a slightly larger pitch. By using different pitches, it is ensured that when the cap closes after the rotational motion is complete, the two sections engage in such a way that they are under tension, thus holding the cap in the closed position. For this purpose, the corresponding sections (i.e., the male thread section and the female thread section) can be designed with different lengths. The term "different lengths" can be understood as different circular sections, each forming part of a complete circle, i.e., covering 360°. For example, in... Figure 6 The image shows a view of the closure, illustrating the hinge 32 and threaded section 340. In this embodiment, these include different extensions. The threaded section substantially corresponds to a 45° circular section, while the second female threaded section corresponds to a 68° circular section. The reason for providing threaded sections of different lengths is to improve closure through a slightly asymmetrical force distribution, which allows for improved tilting in the closed state, thereby achieving higher rigidity and preventing accidental rotational movement, respectively.

[0065] Figure 7 A second embodiment of the multi-component closure in its closed state, based on the proposed principle, is shown. Identical elements or elements having the same effect are shown with the same reference numerals.

[0066] In the illustrated embodiment, hinge 32 includes a first hinge plate 315 forming part of retaining ring 31 and a second hinge plate 335 forming part of cap. The flexible joint of hinge 32 is made of a flexible material and connects retaining ring 31 and cap 33 integrally. Therefore, the second hinge plate 335 may have a downwardly forming parabolic shape or a different bending pattern. Correspondingly, embodiments of the first hinge plate 315 are also formed, which also increase to a maximum along the bending trajectory and then decrease again. The flexible joint is disposed as material between the two bent hinge plates. Due to the bending, the closure 33, subjected to greater tension in the outer region, i.e., away from the midpoint of the hinge, folds. This tension generates a reaction force that must be overcome during the rotational movement of the cap around the flexible joint. This force increases to a maximum with rotational movement, where the tension on the material of the flexible joint of hinge 32 is greatest. With further rotational movement, this tension decreases again. Therefore, the material of the flexible joint acts as a snap-fit ​​element, at which the maximum angle occurs. When this maximum angle is exceeded, the snap-fit ​​element uses its tension to keep the cover in an unfolded state.

[0067] Figure 8A second exemplary embodiment of a multi-part closure in an unfolded form is shown. The closure 1 here also includes a bottom 2 and a threaded cap 3, which is fitted onto the neck 22 of the bottom 2 by a retaining ring, thereby restricting the movement of the retaining ring 31 about the z-direction (i.e., the neck opening). In contrast to the previous example, the neck includes a locking section designed with individual threaded sections 2 having different pitches. Thus, a first portion of the threaded section has a first pitch, and a second portion with a slightly larger second pitch seamlessly connects to the first pitch. The different pitches achieve clamping of the female threaded section 340 when the cap is rotated to close the closure. Furthermore, a rast mark 355 is provided in the female threaded section, which engages in a corresponding locking cam (not shown here) within the male threaded section. The cap 33 includes a sealing ring 36 as in embodiments similar to the previous example and a hinge 32 with a flexible joint. With the hinge in a slightly relaxed unfolded state, a reversible rotational movement generates a force that counteracts this rotational movement. Therefore, the cap remains in the unfolded state. The opening angle in the unfolded state is greater than 90°, and can be in the range of 115° to 150°, especially about 120°.

[0068] Figure 9 A side view of the embodiment in its closed state is shown. The retaining ring 31 is connected to the cover 33 via a plurality of connecting webs. As in the previous example, the retaining ring includes a hinge plate to which the flexible joint of the hinge 32 is attached. Figure 10A and Figure 10B Perspective views of the multi-part closure, viewed from above and below, are depicted. As in the previous example, hinge 32 includes a first hinge element 315 as part of a retaining ring 31 and a second hinge element 335 forming part of a cover 33. Both hinge elements are designed in an arc shape, with the distance between the hinge elements being minimal at the center of the hinge. A flexible joint is also provided there. In this embodiment, hinge 32 further includes two tensioning elements 321 disposed on either side of the flexible joint and, in a tensioned state, securing the first portion of the hinge to the second hinge portion. As the cover 33 rotates about the flexible joint of hinge 32, both tensioning elements 321 are in an angle-dependent tensioned state, wherein, exceeding the maximum angle, both tensioning elements 321 pull the opened cover to the open end position. Thus, when the closure itself rotates (e.g., when folded out), the cover locks in beyond the rotation angle limit, and the tensioning elements 321 prevent folding at the cover.

[0069] Figure 10B The lower side of the multi-component closure according to the invention is shown. The support surface 21 forms a sheet-like annulus, which can be adhered to cardboard material or... Figure 10AThe weld 215 shown is welded to the cardboard material. The sealing ring 36 of the cap 33 can also be seen, which engages in the neck opening and seals the neck opening in a liquid-tight manner. Figure 10A and Figure 10B The illustrated embodiment is manufactured by integrally forming the bottom 2 and the threaded cap 3 with their components. The threaded cap, in its closed state, is then guided onto the neck, such that the retaining ring 31 engages in the support ring of the neck 22. The components can then be placed on and welded to a cardboard box.

[0070] Figures 11A to 11D Different views and cross-sectional views of the multi-component closure are shown. Figure 11A A side view of the bottom is shown, which has a support surface 21, a neck 22 integrally formed thereon, and a neck opening 23. A first locking element extending around the neck includes a male threaded section 250, to which a connecting threaded section 251 is directly connected. The male threaded section 250 extends approximately half the circumference of the neck and includes a first pitch. The connecting male threaded element 251 connected thereto has a significantly smaller pitch and is essentially used to clamp the inner section of the cap during loosening of the neck closure. Therefore, a rotational movement between 70° and 420° is required during unscrewing of the closure to effectively connect the cap to the neck, thereby achieving a liquid tightness. The neck 22 further includes a retainer ring 24 on which a retaining ring 31 of the threaded cap is fitted.

[0071] Figure 11B A side view of the threaded cap with its bottom closed is shown. Figure 11C and Figure 11D Each is shown as a cross-sectional view parallel to or within a plane passing through the hinge. As in the aforementioned example, the sealing ring 36 is designed asymmetrically, meaning that its side opposite the hinge includes a greater height than the portion of the sealing ring facing the hinge 32. Therefore, it forms an angle of approximately 2.5° to 3.5° relative to a plane parallel to the cover.

[0072] exist Figure 11C In the figure, a first locking element 25, designed with a male thread, is also visible, into which a single female thread of a second locking element 34 engages. As shown in the figure, both the first and second locking elements are positioned opposite the hinge, thereby ensuring the sealing and closure of the threaded cap in this location. This is achieved through the different pitches of the first and second locking elements and the slightly larger radius of the sealing ring relative to the flap 230. Therefore, the latter is held in a slightly tensioned state by the sealing ring, bending downwards to achieve a liquid-tight closure.

[0073] Figure 12A and Figure 12BCross-sectional views of the closure in an open but not yet fully unfolded state are shown. These cross-sectional views correspond to... Figure 11C and Figure 11D A cross-sectional view is shown. Opening of the closure is achieved by rotating the closure approximately 90° or slightly more than 90°. Through rotation, the female thread of the cap advances along the male thread section 250 to the connecting thread section 251, where it is released. Furthermore, the pitch of the male thread section 250 also enables tearing of the different connecting webs between the cap 33 and the retaining ring 31 during rotational movement. Therefore, the individual connecting webs primarily fracture first in the region away from the hinge 32, and subsequently only the connecting webs located closer to the hinge 32 fracture. In this respect, opening of the cap is achieved in a coordinated and predictable manner through rotation.

[0074] Through rotational movement, the sealing ring also moves upward along the inner plate of the neck opening. Figure 12A The varying heights of the sealing ring 36 further ensure that it remains on the inner plate 230 of the neck opening during rotational movement. Therefore, after the initial opening, it ensures that the sealing ring does not tilt at the flange 230 during subsequent closing. In particular, as shown... Figure 12A As shown, this ensures that the sealing ring is correctly, accurately, and securely positioned on the flap of the neck opening in a liquid-tight manner before the current closure is complete, with the height of the sealing ring in this open but not yet unfolded state substantially parallel to the support surface. In other words, the height difference between the area away from the hinge and the area of ​​the sealing ring facing the hinge substantially corresponds to the pitch of the connecting male thread section. Figure 12B A cross-section is shown along a plane parallel to the hinge of the flexible joint.

[0075] Along this plane, the height of the sealing ring 36 is the same at both ends. Figure 13A and Figure 13B In the image, the multi-part enclosure is shown in its fully extended form. Figure 13A The hinge 32 is designed such that the tensioning element holds the cap 33 in the open position shown, i.e., at an angle greater than 90°, for example, approximately 120° here. This prevents accidental spillage of liquid due to the cap 33 falling back during liquid discharge (i.e., the rotational movement of the entire multi-part closure). Furthermore, the male threaded section 251 is shown in this figure. Its pitch is significantly smaller than that of the male threaded section 250 (not shown here), and it is used to clamp the female threaded section when the cap is screwed back onto the neck opening. Figure 13B A cross-sectional view along a plane passing through the hinge is shown. As described above, the connecting male thread section is seamlessly connected to male thread section 250, the pitch of which is greater than that of the connecting male thread element. Figure 13CA cross-sectional view along a plane parallel to the flexible joint is shown. The outer end of the female threaded section 340 includes a notch 355 that engages in a corresponding locking cam connecting the male threaded section 250 at the end of the rotational movement of the cap over the neck opening. Thus, on the one hand, the user is tactilely informed that the cap is fully closed over the neck opening; on the other hand, the notch and locking cam serve to additionally lock the cap over the neck opening. Therefore, accidental opening of the cap is also prevented after the first opening.

[0076] like Figure 14 As shown, the inner section is positioned opposite the hinge 32. In this embodiment, the length of the female threaded section is chosen to correspond to one-quarter of the inner circumference of the cap 33. It is mounted opposite the hinge 32. Therefore, when the cap is fully closed, the inner section engages with the neck opening of the outer section 250, such that both are directly opposite the hinge. This creates a high-friction connection on the cap, causing the sealing ring to interact with the neck opening or the flap 230 of the neck opening in a liquid-tight manner.

[0077] Figure 15A An alternative embodiment of hinge 32 is shown. In this embodiment, a flexible element is connected to a first hinge plate 315, which is part of the retaining ring 31. A flexible joint is connected to a second hinge element 335 on the other side. For opening and closing the cover, two pulling elements 321 are provided on both sides of the first hinge element 315. These pulling elements 321 are designed from a flexible and stretchable material. The pulling elements 321 are arranged such that their attachment points facing the support surface 21 are located below the flexible joint of the hinge. Furthermore, two recesses are provided in the retaining ring 31 on both sides of the first hinge element 315. The flexible material of the pulling elements 321 is mounted there. Preferably, the other end of the pulling element is integrally connected to the upper second hinge element 335.

[0078] Figure 15B A perspective embodiment is shown with the threaded cap in the open position. During opening, a pulling force is applied to the two pulling elements 321, causing them to initially counteract the rotation of the flexible joint between the cap and the hinge. When the maximum angle corresponding to the maximum pulling force is exceeded, both pulling elements 321 engage and simultaneously generate a pulling force that pulls the cap to... Figure 15B The position shown. By pulling the element 321, which is currently in the unfolded state, the liquid is prevented from accidentally splashing out due to the cap 33 falling back when the liquid is poured out.

[0079] Furthermore, in this embodiment, the locking elements 25, 34 of another embodiment are designed as a so-called bayonet lock. This bayonet lock includes every two opposing longitudinal slots 256 on the neck, with a transverse slot 257 connected to each longitudinal slot. The transverse slot 257 includes a width that substantially corresponds to the locking element 156 on the inner side of the cap 33. The lengths of the locking elements 356 are sequentially selected such that they engage within the longitudinal slots 256 of the threaded cap.

[0080] Furthermore, in this embodiment, the retaining element 311 is visible, attached to the retaining ring, and engaged from below within the support ring 24, thereby preventing the threaded cap from detaching.

[0081] Figure 16 Another embodiment of a multi-part threaded cap is shown. In this embodiment, a plurality (i.e., six) of longitudinal slots 256 are symmetrically arranged around the neck, and each longitudinal slot is connected to a transverse slot 257. In contrast, the cap 33 further comprises only two threaded sections 356 arranged opposite each other. This embodiment allows the female thread 356 to be guided into one of the locking keys by a small rotational movement when the cap is closed, and closed there. For this purpose, in the aforementioned example, each transverse slot is designed with a small locking cam 258 at its end facing the longitudinal slot. The locking cam prevents the cap from rotating in the closed state and allows the female threaded section 356 to engage in the transverse slot 258 in this way.

Claims

1. A multi-part closure (1) for containing liquid in a cardboard package, comprising: - The bottom (2) has a sheet-like support (21) and a neck (22) integrally disposed thereon, wherein the neck (22) comprises: - Neck opening (23); - A support ring (24) surrounds the neck (22); - At least one first locking element (25) is designed between the neck opening (23) and the support ring (24); - A threaded cap (3) having a retaining ring (31) and a cover (33) attached to the retaining ring (31) by a hinge (32), wherein the retaining ring (31) is at least partially disposed between the sheet-like support (21) and the support ring (24) surrounding the neck, and is rotatably held by the support ring (24), and The cap (33) includes at least one second locking element (34), which, in the closed state, works together with at least one first locking element (25) to liquid-tightly seal the neck opening (23) through the cap (33), and in the closed state, the threaded cap (3) is opened by rotating it about the neck (22) in a first direction; and At least one of the first locking elements (25) includes 4 to 6 male threaded sections (250), and at least one of the second locking elements (34) includes 2 female threaded sections (340), wherein the 2 female threaded sections are substantially perpendicular to the hinge with respect to a corresponding axis of symmetry (S) passing through the center point of the cap (33) and / or the 2 female threaded sections (340) are arranged facing each other, wherein the corresponding male threaded sections and female threaded sections include different lengths.

2. The multi-component closure according to claim 1, wherein the retaining ring (31) is connected to the cover (33) via a plurality of predetermined braking points forming the connecting web (310).

3. The multi-component closure according to claim 1 or 2, wherein the side of the support ring (24) facing the sheet support (21) extends substantially parallel to the sheet support (21), and the side away from the sheet support (21) extends obliquely relative to the sheet support (21).

4. The multi-component closure according to claim 1, wherein the retaining ring (31) comprises a plurality of retaining elements (311) designed together with the support ring (24) to enable the retaining ring to rotate substantially inseparably about the neck.

5. The multi-component closure according to claim 4, wherein one end of the retaining element (311) is pivotally attached to the retaining ring (31), and the other end of the retaining element faces the side of the support ring (24), the side facing the sheet support (21).

6. The multi-component closure according to claim 4, wherein one end of the retaining element (311) is pivotally attached to the retaining ring (31), and the other end of the retaining element (311) faces the side of the support ring (24), the side facing the sheet support (21); wherein the axis of rotation of the retaining element (311) faces the sheet support.

7. The multi-component closure according to claim 1, wherein at least one of the first locking elements (25) includes a male threaded section (250) having at least a first pitch, and at least one of the second locking elements (34) includes a female threaded section (340) having at least a second pitch.

8. The multi-component closure according to claim 1, wherein at least one of the first locking elements (25) includes a male threaded section (250) having at least a first pitch, and at least one of the second locking elements (34) on the inner surface of the cover (33) includes a female threaded section (340) having at least a second pitch.

9. The multi-component closure according to claim 1, wherein the length of the female thread section (340) corresponds to 0.1 to 0.3 times the circumference of the female thread on the inner side of the cover (33), and the female thread section (340) is disposed on the inner side of the cover.

10. The multi-component closure according to claim 1, wherein the length of the female thread section (340) corresponds to 0.1 to 0.15 times the circumference of the female thread on the inner side of the cover (33), and the female thread section (340) is disposed on the inner side of the cover.

11. The multi-component closure according to claim 1, wherein the length of the male threaded section (250) corresponds to 0.25 to 0.45 times the neck circumference.

12. The multi-component closure according to claim 1, wherein the length of the male threaded section (250) corresponds to 0.27 to 0.35 times the neck circumference.

13. The multi-component closure according to claim 1, wherein at least one of the first locking elements (25) includes a male threaded section (250) and at least one of the second locking elements (34) includes a female threaded section (340), wherein the female threaded section (340) is substantially configured to face the hinge (32).

14. The multi-component closure according to claim 1, wherein the length of the female threaded section (340) corresponds to 0.33 to 0.66 times the inner circumference of the cover (33), and the female threaded section (340) is disposed on the inner side of the cover.

15. The multi-component closure according to claim 1, wherein the length of the female threaded section (340) corresponds to 0.55 to 0.65 times the inner circumference of the cover (33), and the female threaded section (340) is disposed on the inner side of the cover.

16. The multi-component closure according to claim 1, wherein the length of the male threaded section (250) corresponds to 0.8 to 1.8 times the neck circumference.

17. The multi-component closure according to claim 7, wherein at least one of the first locking elements (25) includes a connecting male threaded section (251) connected to at least one of the male threaded sections (250) and designed to guide at least one of the female threaded sections (340) into the male threaded section (250) during the rotational movement of the cap (33).

18. The multi-component closure according to claim 17, wherein the pitch of the connecting male threaded section (251) is different from the first pitch.

19. The multi-component closure according to claim 17, wherein the pitch of the connecting male thread section (251) is less than the first pitch.

20. The multi-component closure according to claim 17, wherein the pitch of the connecting male threaded section (251) varies.

21. The multi-component closure according to claim 1, further comprising a locking cam (355) arranged near a corresponding end in the male threaded section (250) and designed to engage in a notch in the female threaded section (340) when the cover (33) is closed.

22. The multi-component closure according to claim 1, further comprising a notch positioned near a corresponding end in the male threaded section (250) and designed to engage with a locking cam (355) in the female threaded section (340) in the closed state of the cover (33).

23. The multi-component closure according to claim 1, wherein at least one of the first locking elements (25) and at least one of the second locking elements (34) form a bayonet lock key.

24. The multi-component closure according to claim 23, wherein at least one of the first locking elements (25) comprises a plurality of longitudinal slots (256) with a transverse slot (257) perpendicularly connected to each end of the longitudinal slots, and at least one of the second locking elements comprises a plurality of protrusions (356) arranged in such a way that they engage in the longitudinal slots and the dedicated transverse slots (257) during a defined longitudinal movement and subsequent rotational movement of the closure (33) in a first direction opposite to the second direction.

25. The multi-component closure according to claim 23, wherein at least one of the first locking elements (25) comprises a plurality of longitudinal slots (256), each end of which is perpendicularly connected to a transverse slot (257), and at least one of the second locking elements on the inner surface of the cover (33) comprises a plurality of protrusions (356) arranged in such a way that they engage in the longitudinal slots and the dedicated transverse slots (257) during a defined longitudinal movement and subsequent rotational movement of the cover (33) in a first direction opposite to the second direction.

26. The multi-component closure according to claim 24, wherein a plurality of the longitudinal slots (256) are symmetrically arranged around the neck (22).

27. The multi-component closure according to claim 24, wherein at least one of the first locking elements (25) comprises two longitudinal slots (256), each of the longitudinal slots extending at right angles to a transverse slot (257), wherein the protrusion (356) is configured substantially perpendicular to the hinge and / or the two longitudinal slots (256) face each other with respect to a corresponding axis of symmetry passing through the center point of the cover (33).

28. The multi-component closure according to claim 24, wherein a plurality of the longitudinal slots (256) starting from the neck opening (23) extend in the direction of the sheet support, and the plurality of the longitudinal slots (256) open toward the neck opening (23).

29. The multi-component closure according to claim 24, wherein the plurality of longitudinal slots (256) include a width that at least exactly corresponds to the extension of the protrusion (356).

30. The multi-component closure according to claim 24, wherein the plurality of the longitudinal slots (256) include a width that increases toward the neck opening (23) in the region of the neck opening (23), the width at least exactly corresponding to the extension of the protrusion (356).

31. The multi-component closure according to claim 24, further comprising a locking cam (258) disposed at the interface between the longitudinal slot and the transverse slot (257) such that it prevents clearance along the first or second direction in the closed state.

32. The multi-component closure according to claim 24, wherein the length of the protrusion (356) substantially corresponds to the length of the transverse slot (257).

33. The multi-component closure according to claim 1, wherein the closure includes a sealing ring (36) that is liquid-tightly engaged in the neck opening (23) when the closure is closed.

34. The multi-component closure according to claim 33, wherein the sealing ring (36) includes an outer diameter that is larger than the neck opening (23).

35. The multi-component closure according to claim 1, wherein the neck opening (23) includes an inwardly curved flap (230).

36. The multi-component closure according to claim 33, wherein the sealing ring (36) includes a height that increases with the distance from the hinge (32).

37. The multi-component closure according to claim 33, wherein the height of the sealing ring (36) is designed such that, in a cross-section along a plane passing through the midpoint of the hinge (32) and the cover (33), the height of the portion of the sealing ring (36) facing the hinge is lower than the portion (36a) of the sealing ring facing away from the hinge.

38. The multi-component closure according to claim 33, wherein the side of the sealing ring (36) facing the neck opening (23) is shorter than the inside of the sealing ring (36).

39. The multi-component closure according to claim 1, wherein the hinge (32) comprises a butterfly hinge.

40. The multi-component closure according to claim 33, wherein the hinge (32) includes a flexible joint disposed between the retaining ring and the cap, the flexible joint being designed to be integral with the retaining ring (31) and the cap (33).

41. The multi-component closure according to claim 1, wherein the hinge (32) includes a first hinge plate (315) forming part of the retaining ring, and includes a second hinge plate (335) forming part of the cover (33).

42. The multi-component closure according to claim 1, wherein the hinge (32) is designed to hold the cover (33) at an angle of rotation of at least 90° around the hinge in the open and / or outward swing state.

43. The multi-component closure according to claim 1, wherein the hinge (32) is designed to hold the cover (33) in an open and / or outward swing state, allowing it to rotate within an angle range of 115° to 145° about the hinge.

44. The multi-component closure according to claim 1, wherein the hinge (32) is designed to hold the cover (33) in an open and / or swing-out state at a rotation greater than 120° around the hinge.

45. The multi-component closure according to claim 40, wherein the hinge (32) includes at least one snap-fit ​​element (321) designed to hold the closure above a predetermined rotation angle about the flexible joint.

46. ​​The multi-component closure according to claim 40, wherein the hinge (32) includes at least one snap-fit ​​element (321) designed to hold the closure above a predetermined rotation angle within the range of 80° to 100° about the flexible joint.

47. The multi-component closure according to claim 45, wherein at least one of the snap-fit ​​elements (321) is located in the recess of the retaining ring, and the rotation axis of the flexible joint extends above the recess.

48. The multi-component closure according to claim 40, wherein the rotation axis of the flexible joint is closer to the plane spanned by the neck opening (23) than the first locking element and the second locking element (34).

49. The multi-component closure according to claim 40, wherein the flexible joint extends at the height of the lower edge of the sealing ring.

50. The multi-component closure according to claim 40, wherein the flexible joint extends within a range of 1 mm to 3 mm around the lower edge of the sealing ring.

51. The multi-component closure according to claim 40, wherein the flexible joint is disposed above the first locking element (25) and the second locking element (34) relative to the sheet support at the bottom.

52. The multi-component closure according to claim 1, wherein the outer diameter of the neck opening (23) is smaller than the lower side of the neck.

53. The multi-component closure according to claim 1, wherein within the range of the retaining ring, the outer diameter of the neck opening (23) is smaller than the lower side of the neck.

54. The multi-component closure according to claim 1, wherein the closure includes a groove (9) with vertically extending webs on its circumferential side surface, wherein the number of webs per unit length is variable.

55. The multi-component closure of claim 1, wherein the sheet support has a welded edge that is spaced apart from and extends around the neck opening.

56. A method for producing packaging, comprising: - Packaging provided; - Fill the package with solids; - Secure the multi-component closure according to any of the preceding claims.

57. A method for producing packaging, comprising: - Provide cardboard or film packaging with openings; - Fill the cardboard or film packaging with solids; - Secure the multi-component closure according to any of the preceding claims.

Images