Lid for closing a liquid container
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- WATERDROP MICRODRINK GMBH
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-10
Smart Images
Figure IMGAF001_ABST
Abstract
Description
[0001] The invention relates to a lid for closing a liquid container, in particular a beverage bottle, preferably a water bottle. The invention further relates to a liquid container and a method for manufacturing a lid.
[0002] Lids for sealing liquid containers, in particular lids for sealing beverage bottles, are known in various forms from the prior art.
[0003] A common problem with certain lids is that the seals, which are meant to prevent leakage from the liquid container, cannot be cleaned thoroughly enough. This leads to the regular formation of deposits and / or mold around the seals, which are difficult or impossible to remove. Such deposits and / or mold should be avoided for hygienic and health reasons.
[0004] Another problem is that with many well-known lids, the sealing effect is not reliably guaranteed over a long period of time, so that unwanted leakage of liquid from the liquid container can occur.
[0005] The invention is therefore based on the objective of providing an improved solution that addresses the aforementioned problems. In particular, it is an objective of the invention to provide a solution that enables improved cleaning of the lid and the seal and also achieves a reliable sealing effect.
[0006] According to a first aspect, the problem is solved by a lid with the features of claim 1. The lid is designed to close a liquid container, in particular a beverage bottle, preferably a water bottle. The lid comprises a lid element having a lid thread on its inner side for a threaded connection with a container thread of a liquid container, in particular a beverage bottle, preferably a water bottle; a sealing retaining element connected to the lid element, wherein the sealing retaining element has a projection extending radially outwards from an outer circumference of the sealing retaining element, the projection being arranged and designed such that an undercut formed by the projection for holding a sealing element is formed between the projection and the lid element; and a sealing element.which is at least partially elastically deformable and has a retaining section extending radially inwards, wherein the sealing element can be arranged in a sealing position in which the sealing element is arranged inside the cover element and the sealing element is held inside the cover element by means of the projection of the sealing retaining element, wherein the sealing element can be removed from the cover element by means of elastic deformation of the sealing element.
[0007] A lid is therefore proposed which has a lid element and a sealing retaining element connected to the lid element, as well as a sealing element, wherein the sealing retaining element has a projection through which an undercut is formed by means of which the sealing element is held within the lid element, wherein the sealing element can be removed from the lid element by elastic deformation.
[0008] One advantage of such a lid is that the sealing element is securely held in the lid element at the position intended for sealing by the projection of the sealing retainer, preventing it from unintentionally falling out. This ensures that the sealing element can reliably fulfill its function of creating a seal. Furthermore, it prevents the sealing element from being lost when the lid is removed from a liquid container or moved, ensuring it remains in position within the lid element unless deliberately removed.
[0009] Another advantage of such a lid is that it can be cleaned more thoroughly and easily, thus preventing the formation of mold and / or deposits with regular cleaning. This improved cleaning capability is achieved primarily because the sealing element is removable from the lid. When removed, the sealing element can be cleaned separately from the other lid components from all sides. The lid and the sealing element itself can also be cleaned more effectively – especially the surfaces that form contact points between the sealing element and the lid.
[0010] The lid is preferably designed to close a liquid container, in particular a beverage bottle, preferably a water bottle, by means of a detachable threaded connection, wherein the liquid container is preferably designed as a glass bottle or steel bottle.
[0011] Preferably, the lid has a central axis extending through the middle of the lid. Preferably, the central axis of the lid extends vertically when the lid is connected to a liquid container designed as a beverage bottle, the base of which rests on a horizontal plane.
[0012] Preferably, the lid has a radial direction that is orthogonal to the central axis and extends radially outwards from the central axis. Preferably, the radial direction of the lid extends horizontally when the lid is connected to a liquid container designed as a beverage bottle, the base of which rests on a horizontal plane.
[0013] The lid element has a lid thread on its inner surface. This lid thread is preferably internal, allowing it to engage with an external thread on the container. The inner surface of the lid element is preferably a substantially cylindrical inner wall, with the central axis of this wall preferably corresponding to the central axis of the lid. The lid element, with the exception of the lid thread, can be rotationally symmetrical.
[0014] The sealing retaining element is connected to the lid element. Preferably, the sealing retaining element is connected to an upper inner surface of the lid element facing the lid opening. Preferably, the sealing retaining element is materially bonded to the lid element, in particular welded, and most preferably by microwave welding. The sealing retaining element is preferably rotationally symmetrical, particularly with respect to the central axis of the lid. The sealing retaining element has an outer circumference, in particular a circular one.
[0015] The projection of the sealing retaining element extends radially outwards from its outer circumference. This projection is preferably designed as a radially circumferential projection. The projection preferably extends along a circle, which preferably has its center point on the central axis of the cover and a radius perpendicular to the central axis of the cover. The undercut formed between the projection of the sealing retaining element and the cover element serves in particular to positively engage the sealing element. The undercut preferably extends radially around and adjacent to the projection of the sealing retaining element.
[0016] The sealing element has a retaining section that extends radially inwards, preferably from an inner circumference of the sealing element, i.e., in the opposite direction to the radial extension of the projection of the retaining element. The retaining section of the sealing element is preferably designed as a radially circumferential section. The retaining section of the sealing element preferably extends along a circle, which preferably has its center point on the central axis of the cover and a radius that is orthogonal to the central axis of the cover. The sealing element can be arranged in a sealing position in which it is located inside the cover element and is held within the cover element by means of the projection of the retaining element.
[0017] The sealing element is elastically deformable, at least partially, preferably completely. The sealing element can be removed from the cover element by means of at least partial elastic deformation. Preferably, the sealing element can be pulled out of the cover element by means of elastic deformation, whereby the sealing element deforms elastically when being pulled out of the cover element, and in particular the retaining section of the sealing element deforms such that it can be moved past the projection of the sealing retaining element. Removal can be effected, in particular, by pulling the sealing element out in a direction parallel to the central axis of the cover. In the removed state, the sealing element is then no longer in the sealing position, but in a removal position.
[0018] It is particularly preferred that the lid comprises an outer lid element, wherein the lid element is arranged within and connected to the outer lid element. The outer lid element can, in particular, form the outside of the lid and preferably enclose the lid element. The outer lid element preferably has a cylindrical section and a lid top section. The outer lid element is preferably rotationally symmetrical, particularly with respect to the central axis of the lid. The outer lid element is preferably bonded to the lid element by means of an adhesive bond.
[0019] The outer lid element may have, in particular two, recesses for connection to a connecting section of a carrying handle. The lid may then have a carrying handle by which the lid, and thus also, if the lid is connected to the body of a liquid container, the corresponding liquid container, can be carried.
[0020] Preferably, the outer lid element has an outer surface and an inner surface. Preferably, the outer surface of the lid element is connected to the inner surface, preferably by means of a material-bonded connection, in particular by means of an adhesive bond.
[0021] It is particularly preferred that the projection of the sealing retaining element is curved in a radially outward direction along the outer circumference of the sealing retaining element.
[0022] One advantage of such an outwardly curved design of the sealing retainer's projection is that the sealing element, while elastically deformed during removal or insertion, can be moved particularly gently along the projection, since the sealing element is not exposed to edges or similar ridges due to the curved design of the projection. Thus, the sealing element is not damaged even with frequent insertion and removal, resulting in a particularly long service life.
[0023] It is particularly preferred that the retaining section of the sealing element is curved inwards in a radial direction.
[0024] One advantage of such an inwardly curved design of the retaining section of the sealing element is that the retaining section can be elastically deformed particularly well during removal or insertion, allowing the sealing element to be moved gently along the projection of the retaining element. This also contributes to a relatively long service life of the sealing element.
[0025] It is particularly preferred that the extension of the projection of the sealing retaining element in the radial direction outwards is so large that the projection of the sealing retaining element in the radial direction outwards at least partially extends beyond the retaining section of the sealing element.
[0026] Preferably, the projection of the sealing retainer extends at least partially beyond the retaining section of the sealing element when the sealing element is in the sealing position, such that the retaining section of the sealing element cannot be moved past the projection of the sealing retainer without deformation. This has the advantage that the sealing element is securely held in the sealing position in the cover element by means of the projection of the sealing retainer.
[0027] It is particularly preferred that a gap is formed between the retaining section of the sealing element and the projection of the sealing retaining element in a direction orthogonal to the radial direction.
[0028] Preferably, the retaining section of the sealing element and the projection of the sealing retaining element are spaced apart from each other, particularly in a direction parallel to the central axis of the cover, when the sealing element is in the sealing position.
[0029] Preferably, the distance is at least 0.25 mm, more preferably at least 0.5 mm, and more preferably at least 1 mm. Preferably, the distance between the retaining section of the sealing element and the projection of the sealing retaining element in the direction parallel to the central axis of the cover is at least 0.25 mm, more preferably at least 0.5 mm, and more preferably at least 1 mm.
[0030] Preferably, the distance is at most 5 mm, more preferably at most 2.5 mm, and more preferably at most 1.6 mm. Preferably, the distance between the retaining section of the sealing element and the projection of the sealing retaining element in the direction parallel to the central axis of the cover is at most 5 mm, more preferably at most 2.5 mm, and more preferably at most 1.6 mm.
[0031] Particularly preferably, the distance between the retaining section of the sealing element and the projection of the sealing retaining element in the direction parallel to the central axis of the cover is 1.3 mm.
[0032] One advantage of such a gap between the projection of the sealing retainer and the retaining section of the sealing element is that it provides sufficient space for elastic deformation of the sealing element when removing it from and inserting it into the sealing position. This makes it particularly easy to insert and remove the sealing element from the cover element.
[0033] It is particularly preferred that the sealing retaining element is materially bonded to the lid element, preferably welded, in particular by microwave welding. Preferably, the connection between the sealing retaining element and the lid element is achieved by microwave welding.
[0034] One advantage of such a material-bonded connection is that the sealing element can be attached to the cover element particularly firmly and immovably. This allows the sealing element to be reliably repositioned in its intended position, the sealing position, time and time again.
[0035] One advantage of using microwave welding is that the lid element and the sealing retaining element, if these elements are made of a plastic such as polypropylene, can be heated particularly quickly, so that the joining process can be carried out particularly quickly, thereby reducing the overall manufacturing time for the production of the lid.
[0036] As an alternative to such a material-bonded connection between the sealing retaining element and the cover element, a positive-locking connection is also possible. If a positive-locking connection between the cover element and the sealing retaining element is provided, at least two connecting elements can be arranged on the sealing retaining element, for example, which are connected to the cover element by means of a snap connection, so that the sealing retaining element is connected to the cover element by means of this snap connection.
[0037] It is particularly preferred that the sealing element has an insertion contour on a top side of the sealing element and the cover element has a receiving contour on a side facing the sealing element, and wherein the insertion contour of the sealing element and the receiving contour of the cover element are designed to correspond to each other in such a way that the insertion contour of the sealing element can be inserted precisely into the receiving contour of the cover element.
[0038] The upper side of the sealing element preferably faces the top of the lid when the sealing element is in the sealing position. The lower side of the sealing element preferably faces the lid opening when the sealing element is in the sealing position.
[0039] The insertion contour of the sealing element is preferably rotationally symmetrical, particularly with respect to the central axis of the cover. The receiving contour of the cover element is preferably rotationally symmetrical, particularly with respect to the central axis of the cover.
[0040] The insertion contour of the sealing element is preferably, when the sealing element is in the sealing position, precisely fitted into the receiving contour of the cover element. This means that the insertion contour of the sealing element and the receiving contour of the cover element are designed as positive and negative contours that fit together exactly.
[0041] One advantage of such an insertion contour and such a receiving contour is that the sealing element is arranged in a precisely defined position, in which the sealing element rests against the lid element, so that when the lid is placed on a liquid container, the sealing element is arranged exactly in the intended position, so that the desired sealing function can be reliably achieved by means of the sealing element and leakage of liquids from the liquid container can be prevented.
[0042] It is particularly preferred that the sealing element has a sealing surface on an underside of the sealing element for producing a seal with a container opening of a liquid container, in particular a beverage bottle, preferably a water bottle.
[0043] Preferably, the sealing surface of the sealing element is designed and arranged such that, when the lid is connected to a container body, the sealing surface is in contact with a surface of the container body, and a sealing force is generated between the sealing surface of the sealing element and the surface of the container body. The desired sealing effect can be ensured particularly advantageously by means of such a sealing force.
[0044] Preferably, the sealing surface has several protrusions and depressions, which are preferably circular and / or concentric. The sealing surface is preferably rotationally symmetrical, particularly with respect to the central axis of the lid. The protrusions and depressions of the sealing surface are preferably arranged circularly and / or concentrically with respect to the central axis of the lid. Such protrusions and depressions allow for particularly reliable elastic deformation of the protrusions, thereby ensuring a continuous seal and thus a reliable sealing effect.
[0045] It is particularly preferred that the sealing element has a handle extending towards an opening in the lid for pulling the sealing element out of the lid element. Such a handle facilitates handling the sealing element when removing it from and inserting it into the lid element.
[0046] Preferably, the handle of the sealing element has a recess, preferably circular in shape, which is preferably arranged on a side of the handle pointing towards a central axis of the lid.
[0047] Such a recess in the handle makes it particularly easy to grip the handle, especially allowing the thumb to be placed in the recess.
[0048] Preferably, the handle extends longitudinally parallel to the central axis of the lid. Preferably, the handle extends transversely to its longitudinal extent along a circular segment whose center lies on the central axis of the lid.
[0049] It is particularly preferred that the lid element has a connecting section which has a recess, preferably arranged circularly around a central axis of the lid, in particular in the form of a groove, wherein the sealing retaining element has a connecting section corresponding to the connecting section of the lid element, and wherein the connecting section of the lid element is materially bonded to the connecting section of the sealing retaining element.
[0050] By means of such a recess in the connecting section of the lid element, narrow sections can be formed on both sides of the recess, which can be heated and melted particularly quickly to create a material-bonded connection with the sealing retaining element. The connecting section of the lid element is preferably rotationally symmetrical, particularly with respect to the central axis of the lid. The recess in the connecting section of the lid element is preferably rotationally symmetrical, particularly with respect to the central axis of the lid. The connecting section of the sealing element is preferably rotationally symmetrical, particularly with respect to the central axis of the lid.
[0051] Preferably, the connecting section of the sealing element is materially bonded to the connecting section of the lid element on both sides of the recess of the connecting section of the lid element.
[0052] It is particularly preferred that the sealing element has a cover section that completely covers the sealing retaining element in the direction of the lid opening. Preferably, the sealing retaining element is completely covered by the cover section of the sealing element so that, when the sealing element is in the sealing position, the sealing retaining element is not fluidly connected to the lid opening.
[0053] One advantage of a cover section on the sealing element is that, when the lid is connected to a container body, only one interface needs to be sealed—namely, the area between the container body and the sealing surface of the sealing element. Because of the cover section, no liquid can flow within the sealing surface of the sealing element between the sealing element and the sealing retainer. Since only a single surface needs to be sealed and there are no other potential leak points, a particularly reliable seal can be achieved, reliably preventing liquid from escaping the container.
[0054] It is particularly preferred that the sealing retaining element has a cylindrical insertion section and the cover element has a cylindrical receiving section, wherein the insertion section of the sealing retaining element is fitted precisely into the receiving section of the cover element.
[0055] Preferably, the insertion section of the sealing retaining element is rotationally symmetrical, particularly with respect to the central axis of the lid. Preferably, the receiving section of the lid element is rotationally symmetrical, particularly with respect to the central axis of the lid.
[0056] Preferably, the insertion section of the sealing retaining element and the receiving section of the cover element are designed to correspond to each other. This ensures, to a particularly advantageous extent, precise placement of the sealing retaining element in the correct position.
[0057] By means of such an insertion section of the sealing retaining element and such a receiving section of the cover element, it can be ensured that the sealing retaining element is held more securely in its intended position due to the receiving section, and also that the sealing retaining element can be reliably placed exactly in the center of the cover element during manufacturing.
[0058] It is particularly preferred that the lid element comprises or consists of plastic, preferably in the form of a thermoplastic material, in particular polypropylene.
[0059] It is particularly preferred that the sealing retaining element comprises or consists of plastic, preferably in the form of a thermoplastic plastic, in particular polypropylene.
[0060] It is particularly advantageous for the lid element and the sealing retaining element to be made of the same material or to consist of the same material. This allows for a particularly good welded connection between the two components.
[0061] It is particularly preferred that the sealing element comprises or consists of an elastomer, preferably in the form of silicone, and in particular in the form of food-grade silicone. Silicone is particularly preferred because, firstly, it provides a food-grade material, so that no toxins are released from the material and the taste and odor of the liquid are not negatively affected by the material, and secondly, it provides an elastic material, so that the sealing element can be removed from and inserted into the lid element by means of elastic deformation.
[0062] It is particularly preferred that the outer lid element comprises or consists of metal, preferably in the form of steel, especially stainless steel.
[0063] It is particularly preferred that the sealing element has a Shore A hardness of at least 25 Shore A 3s, preferably at least 35 Shore A 3s, and particularly preferably at least 45 Shore A 3s.
[0064] Such a minimum hardness has proven to be particularly advantageous both for reliably achieving tightness and for the required elasticity for removal and insertion.
[0065] All Shore A hardness values are to be understood in particular as values according to DIN ISO 7619-1, whereby the values refer to a measurement time of 3 seconds and a measurement temperature of 23 °C.
[0066] It is particularly preferred that the sealing element has a Shore A hardness of at most 75 Shore A 3s, preferably at most 65 Shore A 3s, and particularly preferably at most 55 Shore A 3s.
[0067] Such a maximum hardness has proven to be particularly advantageous both for reliably achieving tightness and for the required elasticity for removal and insertion.
[0068] It is particularly preferred that the sealing element has a Shore A hardness of 50 Shore A 3s. Such a hardness has proven to be especially advantageous for both reliably achieving a tight seal and for providing the required elasticity for removal and insertion.
[0069] It is particularly preferred that the lid has two handle retaining elements and that the lid outer element has two holes for receiving the handle retaining elements. Preferably, the handle retaining elements each have an outer connecting section and an inner connecting section. Preferably, the outer connecting section of the handle retaining element is arranged on the outside of the lid outer element and the inner connecting section of the handle retaining element is arranged on the inside of the lid outer element.
[0070] A handle retaining element is understood to be, in particular, a component designed to create a connection, preferably a positive-locking and / or releasable connection, especially a snap-fit connection, with a handle designed to carry the lid and / or a bottle on which the lid is placed. Preferably, the outer connecting section of the handle retaining element is arranged on the outside of the lid's outer element, and the inner connecting section of the handle retaining element is arranged on the inside, i.e., within, the lid's outer element. This allows, with particular advantage, the inner connecting section of the handle retaining element to be connected to a lid element, especially in a positive-locking manner, or to engage with a lid element, and the outer connecting section to be connected to a handle, especially in a positive-locking manner, or to engage with a handle.
[0071] It is particularly preferred that the lid has a handle with a first end and a second end, wherein a hole is arranged at the first end of the handle for creating a positive-locking, preferably detachable, connection, in particular a snap-fit connection, with one of the handle retaining elements. It is particularly preferred that a hole is arranged at the second end of the handle for creating a positive-locking, preferably detachable, connection, in particular a snap-fit connection, with one of the handle retaining elements. Preferably, an undercut is formed on each of the handle retaining elements between the inner connecting section and the outer connecting section. Preferably, the outer connecting section of each handle retaining element has an outer diameter that is at least 1 mm, preferably at least 2 mm, larger than the inner diameter of the hole at the first end of the handle and / or the hole at the second end of the handle.Preferably, the outer connecting section of the handle retaining element has an outer diameter that is at most 6 mm, preferably at most 4 mm, smaller than the inner diameter of the hole at the first end of the handle and / or the hole at the second end of the handle.
[0072] The handle is primarily used for carrying the lid and / or a bottle on which the lid is placed. The hole at the first end of the handle is positioned and designed so that it can be slipped over the outer connecting section of the handle retaining element. The first end of the handle is preferably designed to be elastic, allowing it to deform when slipped over the handle, thus creating a positive-locking and, in particular, detachable connection between the handle and the handle retaining element. An advantage of such a connection is that the handle can be removed and reattached. This facilitates cleaning and easier replacement of individual parts.
[0073] It is particularly preferred that the lid element has a recess for each of the handle retaining elements for connection with the inner connecting section of the respective handle retaining element. Preferably, each of the recesses for connection with the inner connecting section of the respective handle retaining element has a surface curved in the circumferential direction of the lid element. Preferably, the inner connecting section of the respective handle retaining element has a curved contact surface corresponding to this curved surface.
[0074] According to a further aspect, the aforementioned problem is solved by a liquid container, preferably in the form of a beverage bottle, in particular in the form of a water bottle, comprising: a container body, in particular in the form of a bottle body, for receiving liquids, in particular water, wherein the container body has a container opening and a container thread, and a lid as described herein, wherein the lid thread of the lid is designed to engage in the container thread of the container body and to create a detachable threaded connection between the lid and the container body.
[0075] Preferably, the container body is made of glass or metal, in particular steel. The container thread of the container body is preferably an external thread. The lid thread of the lid is preferably an internal thread.
[0076] According to a further aspect, the aforementioned problem is solved by a method for manufacturing a lid, preferably a lid as described herein, the method comprising: manufacturing, in particular by injection molding, a lid element, which preferably comprises or consists of polypropylene, and which has on an inner side of the lid element a lid thread for a threaded connection with a container thread of a liquid container, in particular a beverage bottle, preferably a water bottle; manufacturing, in particular by injection molding, a sealing retaining element, which preferably comprises or consists of polypropylene, wherein the sealing retaining element has a projection extending radially outwards from an outer circumference of the sealing retaining element; joining the sealing retaining element to the lid element in a material-bonded manner;Inserting a sealing element, which is elastically deformable at least in sections, into a sealing position, such that the sealing element is arranged inside the cover element and is held inside the cover element by means of the projection of the sealing retaining element.
[0077] It is particularly preferred that the method comprises: manufacturing a lid outer element, preferably made of steel, in particular stainless steel; and / or joining the lid element to a lid outer element by arranging the lid element inside the lid outer element and arranging an adhesive bond between the lid element and the lid outer element.
[0078] It is particularly preferred that the material-bonded joining of the sealing retaining element to the lid element is carried out by microwave welding, in particular by applying microwaves with an energy of at least 100 watts, preferably at least 200 watts, and / or of at most 500 watts, preferably at most 400 watts, and / or a frequency of at least 5 kHz, preferably at least 10 kHz, and / or of at most 30 kHz, preferably at most 20 kHz, and / or a time of at least 0.05 seconds, preferably at least 0.10 seconds, and / or of at most 0.30 seconds, preferably at most 0.20 seconds.
[0079] Applying microwaves with such energy and / or frequency and / or for such a time has proven particularly advantageous for a particularly rapid formation of the connection, while still achieving the desired strength of the connection.
[0080] The application of microwaves with an energy of 259 watts and / or a frequency of 14.93 kHz and / or a time of 0.15 seconds is particularly advantageous.
[0081] It is particularly preferred that the method comprises: positioning two handle retaining elements in holes of the lid outer element, wherein the handle retaining elements each have an outer connecting section and an inner connecting section, wherein preferably the outer connecting section of the handle retaining element is arranged in the area of the outside of the lid outer element and the inner connecting section of the handle retaining element is arranged in the area of the inside of the lid outer element.
[0082] It is particularly preferred that the method comprises: inserting the lid element into the outer lid element, wherein the lid element has a recess for each of the handle retaining elements for connection with the inner connecting section of the respective handle retaining element and the recesses accommodate the inner connecting section of the respective handle retaining element.
[0083] It is particularly preferred that the method comprises: producing a positive-locking, preferably detachable, connection, in particular a snap connection, between a hole at a first end of a handle and one of the handle retaining elements, and a positive-locking, preferably detachable, connection, in particular a snap connection, between a hole at a second end of the handle and one of the handle retaining elements.
[0084] For the advantages, design variants and design details of the various aspects of the solutions described here and their respective possible further developments, reference is also made to the description of the corresponding features, details and advantages of the other aspects and their further developments.
[0085] Preferred embodiments are explained by way of example with reference to the accompanying figures. The drawings are not necessarily to scale. In the figures, identical or essentially functionally equivalent or similar elements are designated with the same reference numerals. They show: Fig. 1a: A top oblique view of a first embodiment of a lid; Fig. 1b: A bottom oblique view of the first embodiment of a lid; Fig. 1c: A bottom view of the first embodiment of a lid; Fig. 2: An exploded view of the first embodiment of a lid; Fig. 3: A sectional view and two detail views of the first embodiment of a lid; Fig. 4a: A liquid container in the shape of a beverage bottle onto which a lid can be placed; Fig. 4b: A liquid container in the shape of a beverage bottle with a lid; Fig. 5a: A bottom oblique view of a second embodiment of a lid; Fig. 5b: A sectional view of the second embodiment of a lid placed on a liquid container in the shape of a beverage bottle; Figs. 6a-d: Sectional views of components of the second embodiment of a lid to illustrate the manufacture of the lid; Fig.7a-b: a schematic representation of a method for manufacturing a lid; Fig. 8: an exploded view of a third embodiment of a lid; Fig. 9: a sectional view of the third embodiment of a lid; Fig. 10: an exploded view of a fourth embodiment of a lid; Fig. 11. :Fig. 12a: a sectional view of the fourth embodiment of a lid; Fig. 12b: a top oblique view of the fifth embodiment of a lid; Fig. 12c: a bottom view of the fifth embodiment of a lid; Fig. 13a-e: a schematic representation of a method for manufacturing a lid of the fifth embodiment; Fig. 14: a sectional view of the fifth embodiment of a lid; Fig. 15a: a bottom sectional view of the fifth embodiment of a lid; Fig. 15b: a detailed view of a connection between the handle and the handle retaining element of the fifth embodiment of a lid; Fig. 16: a schematic representation of a method for manufacturing the fifth embodiment of a lid.
[0086] Fig. 1a, Fig. 1 b and Fig. 1c show different views of a first embodiment of a lid 1. In Fig. 1a The lid 1 is shown from a slightly oblique angle above, so that the outer lid element 10, which is rotationally symmetrical about the central axis A of the lid 1, is visible. The outer lid element 10 has an outer surface 11, which in turn comprises a cylindrical section 13 and an adjoining upper lid section 15. The outer lid element 10 is rotationally symmetrical with respect to the central axis A of the lid 1. Fig. 1b The cover 1 is shown from a low angle, so that the cover opening 1a and the cover element 20 are visible. The cover element 20 has a cover thread 24, which is designed as an internal thread. The sealing element 40 is arranged inside the cover element 20 in the sealing position. The sealing surface 42 of the sealing element 40 faces towards the cover opening 1a. The sealing element 40 also has a handle 44 with a circular recess 45. The circular recess 45 is located on a side of the handle 44 facing the central axis A of the cover 1. This recess 45 of the handle 44 allows for particularly easy gripping of the handle 44, with the thumb being able to be placed in the recess 45. The sealing element 40 also has a cover section 43, which is a sealing retaining element (see Fig. 2 and Fig. 3 , marked there with reference number 30) completely covers in the direction of the lid opening 1a. In Fig. 1c The lid 1 is shown from below. It can be seen that the sealing surface 42 is arranged rotationally symmetrically around the central axis A of the lid 1 and that the handle 44 extends with its longitudinal extent parallel to the central axis A of the lid 1.
[0087] Fig. 2 shows an exploded view of the in Fig. 1a, 1b und 1c The first embodiment of the lid 1 is shown. The lid outer element 10 has an inner surface 12, which in turn comprises a cylindrical section 14 and an adjoining section 16. The lid element 20 has an outer surface 21 and an inner surface 22. On the outer surface 21 of the lid element 20, the lid element 20 has a cylindrical section 23 with recesses 27 and an adjoining lid element upper surface section 25. At its lower edge, the lid element 20 has an edge section 28. On the inner surface 22 of the lid element 20, the lid element 20 has the lid thread 24 and a receiving contour 26 as well as a receiving section 29. The sealing retaining element 30 has a bottom surface 32 and a projection 31. The sealing element 40 has a top surface 40o and a bottom surface 40u.Furthermore, the sealing surface 42 of the sealing element 40 and the cover section 43 of the sealing element 40 as well as the handle 44 of the sealing element 40 with the recess 45 are shown.
[0088] Fig. 3 shows a sectional view and two detail views B and C of the already mentioned in connection with Fig. 1a, 1b, 1c and 2The first embodiment of the lid 1 is described. The outer lid element 10 encloses the lid element 20. The outer lid element 10 is bonded to the lid element 20 by means of an adhesive bond. The edge section 28 of the lid element 20 prevents adhesive from leaking out during bonding. The sealing element 40 has an insertion contour 46 on its upper surface. The lid element 20 has a receiving contour 26 on a side facing the sealing element 40. The insertion contour 46 of the sealing element 40 and the receiving contour 26 of the lid element 20 are designed to correspond to each other such that the insertion contour 46 of the sealing element 40 can be inserted precisely into the receiving contour 26 of the lid element 20 and is inserted precisely in the sealing position of the sealing element shown here.The sealing retaining element 30 has a cylindrical insertion section 39, and the cover element 20 has a cylindrical receiving section 29. The insertion section 39 of the sealing retaining element 30 fits precisely into the receiving section 29 of the cover element 20. The cover element 20 also has a connecting section 20a adjoining the receiving section 29, which has a recess 20b in the form of a groove arranged circularly around a central axis A of the cover 1. The sealing retaining element 30 has a connecting section 30a corresponding to the connecting section 20a of the cover element 20. The connecting section 20a of the cover element 20 is materially bonded to the connecting section 30a of the sealing retaining element 30 by means of microwave welding. A cavity 50 is arranged within the cylindrical insertion section 39 of the sealing retaining element 30.
[0089] The sealing retaining element 30 has a projection 31 that extends outwards from an outer circumference 30b of the sealing retaining element 30 in a radial direction R, which is oriented orthogonally to the central axis A of the cover 1. The projection 31 is arranged and designed such that an undercut 60, formed by the projection 31, is created between the projection 31 and the cover element 20 for holding the sealing element 40. The sealing element 40 is elastically deformable and has a retaining section 48 that extends inwards in a radial direction R. The sealing element 40 is arranged here in the sealing position in which it is located inside the cover element 20 and is held within the cover element 20 by means of the projection 31 of the sealing retaining element 30.The sealing element 40 can be removed from the cover element 20 by means of elastic deformation of the sealing element 40. A gap D is formed between the retaining section 48 of the sealing element 40 and the projection 31 of the sealing retaining element 30 in a direction parallel to the central axis A of the cover 1. In the embodiment shown here, this gap D is 1.6 mm. This gap D is provided to create space for the desired elastic deformation when removing and inserting the sealing element 40. In this way, the sealing element 40 can be inserted into the sealing position in the cover element particularly well and removed from the cover element into a removal position.
[0090] Fig. 4a und Fig. 4b They show a liquid container 2 in the shape of a beverage bottle. Fig. 4a no lid is on and in Fig. 4b is a lid 1, for example a lid like the one used in connection with the Fig. 1a, 1b, 1c , 2and 3 The liquid container 2 is described and attached. The liquid container 2 has a container body 2a in the form of a bottle for holding liquids, in particular water. The container body 2a has a container opening 2b and a container thread 2c. The lid 1 has a lid thread (not shown here) which is designed to engage in the container thread 2c of the container body 2a and to create a detachable threaded connection between the lid 1 and the container body 2a.
[0091] Fig. 5a Figure 1 shows a view from a low angle of a second embodiment of a lid 1. This second embodiment essentially corresponds to the one described in connection with the Fig. 1a, 1b, 1c , 2 and 3The first embodiment described above is therefore essentially described therein. The only difference from the first embodiment is that in the second embodiment the sealing element 40 does not have a cover section 43, so that in the second embodiment the sealing retaining element 30 is not covered in the direction of the lid opening 1a. Fig. 5b shows a cross-sectional view of the in Fig. 5a shown lid, placed on a liquid container 2 in the shape of a beverage bottle.
[0092] Fig. 6a-d The diagram shows sectional views of components of the second embodiment of a lid to illustrate the manufacture of a lid 1. Fig. 6a Figure 1 shows that the cover element 20 is inserted into the outer cover element 10. Fig. 6b Figure 1 shows that the sealing retaining element 30 is inserted into the cover element 20. Fig. 6c It is shown that the sealing element 40 is inserted into the cover element 20. In Fig. 6d The lid 1 then has all its components in the assembled state, with the sealing element 40 arranged in the sealing position.
[0093] Fig. 7a-b show schematic representations of a process 100 for manufacturing a lid.
[0094] The in Fig. 7a The exemplary method 100 shown comprises the following steps: In step 110, manufacturing, in particular by injection molding, a lid element 20, which preferably comprises or consists of polypropylene, and which has on an inner surface 22 of the lid element 20 a lid thread 24 for a threaded connection with a container thread 2c of a liquid container 2, in particular a beverage bottle, preferably a water bottle. In step 120, manufacturing, in particular by injection molding, a sealing retaining element 30, which preferably comprises or consists of polypropylene, wherein the sealing retaining element 30 has a projection 31 extending outwards in the radial direction R from an outer circumference 30b of the sealing retaining element 30.In step 130, the sealing retaining element 30 is joined to the lid element 20 by means of microwave welding, in particular by applying microwaves with an energy of at least 100 watts, preferably at least 200 watts, and / or at most 500 watts, preferably at most 400 watts, and / or a frequency of at least 5 kHz, preferably at least 10 kHz, and / or at most 30 kHz, preferably at most 20 kHz, and / or a time of at least 0.05 seconds, preferably at least 0.10 seconds, and / or at most 0.30 seconds, preferably at most 0.20 seconds. Particularly preferably, the application of microwaves can be carried out with an energy of 259 watts and a frequency of 14.93 kHz and a time of 0.15 seconds.In step 140, a sealing element 40, which is elastically deformable at least in sections, is inserted into a sealing position, such that the sealing element 40 is arranged inside the cover element 20 and is held inside the cover element by means of the projection 31 of the sealing retaining element 30.
[0095] The in Fig. 7b The methods shown include those related to Fig. 7a The process steps described above are supplemented by the following steps 120 and 130: In step 125a, a cover outer element is manufactured, preferably from steel, particularly stainless steel. In step 125c, the cover element 20 is joined to a cover outer element 10 by arranging the cover element 20 inside the cover outer element 10 and forming an adhesive bond between the cover element 20 and the cover outer element 10.
[0096] Fig. 8 Figure 1 shows an exploded view of a third embodiment of a lid 1. The outer lid element 10 is designed as described in connection with the first embodiment. The sealing element 40 is designed as described in connection with the second embodiment. Although the sealing retaining element 30 and the lid element 20 are also designed similarly to the first and second embodiments, the connection between the sealing retaining element 30 and the lid element 20 is implemented differently. The sealing retaining element 30 and the lid element 20 are not materially bonded, but rather positively connected by means of a snap-fit connection. For this purpose, the sealing retaining element 30 has two connecting elements 38a, 38b, which are connected to the lid element 20 by means of a snap-fit connection at two connecting element receptacles 20d, 20c provided for this purpose (see also Figure 1). Fig. 9 ) are connected so that the sealing retaining element 30 is positively connected to the cover element 20 by means of this snap connection. Fig. 9 shows a sectional view of the in Fig. 8 third embodiment of the lid shown 1. In Fig. 9 It can be seen that the connecting elements 38a, 38b each have a hook 38s which engage in the element 20s and thus create a positive-locking connection.
[0097] Fig. 10 Figure 1 shows an exploded view of a fourth embodiment of a lid. The fourth embodiment essentially corresponds to the third embodiment of the lid 1, so reference is made to the description of the third embodiment. However, unlike the third embodiment, the fourth embodiment additionally provides a carrying handle 3 with two connecting sections 3x attached to it. Furthermore, the outer lid element 10 has two recesses 10x for connecting to the connecting sections 3x of the carrying handle 3. The sealing retaining element 30 also has two recesses 38x for connecting to the connecting sections 3x of the carrying handle 3. Fig. 11 shows a sectional view of the in Fig. 10 fourth embodiment of the lid shown 1.
[0098] Fig. 12a Figure 1 shows a top-down oblique view of a fifth embodiment of a lid 1. This fifth embodiment essentially corresponds to the one described in connection with the Fig. 1a, 1b, 1c , 2 and 3 The fifth embodiment is described in the first embodiment, and therefore, for the description of the lid 1, reference is essentially made to the description therein. However, one difference compared to the first embodiment is that the fifth embodiment has a handle 3. Furthermore, the lid 1 has two handle retaining elements 4, to which the handle 3 is positively and releasably connected by means of a snap connection. Fig. 12b shows the in Fig. 1 Lid 1 shown in a view from a low angle and Fig. 12c shows this lid 1 from below, showing that on the left side the handle 3 is connected to the handle retaining element 4 there by means of a first end 3b of the handle 3 and on the right side the handle 3 is connected to the handle retaining element 4 there by means of a second end 3c of the handle 3.
[0099] Fig. 13a-e shows a schematic representation of a method for manufacturing a lid of the fifth embodiment. Fig. 13a The outer lid element 10 is shown. The outer lid element 10 has two holes 17 arranged on opposite sides for receiving the handle retaining elements 4. The two handle retaining elements 4, each having an outer connecting section 4a and an inner connecting section 4b, are guided into the outer lid element 10 from the inside and inserted into the holes 17, so that the outer connecting section 4a is arranged on the outside of the outer lid element 10 and the inner connecting section 4b is arranged on the inside of the outer lid element 10, as shown in Fig. 13b as shown further in Fig. 13b A lid element 20 is shown being inserted from below into the outer lid element 10 such that the inner connecting sections 4b of the handle retaining elements 4 are arranged in the recesses 27a of the lid element 20. Fig. 13c The lid element 20 is shown in its installed position. The handle 3 is then attached as shown in Fig. 13d As shown in a detailed view, the handle is connected to the handle retaining elements 4 by means of a form-fitting and detachable connection between the handle 3 and the handle retaining elements 4 via the designated holes 3a at both ends of the handle 3. For this purpose, the ends of the handle 3 are slipped over the respective outer connecting section 4a, whereby the edge surrounding the hole 3a deforms elastically. After connection, the edge around the hole 3a deforms elastically again, so that a form-fitting connection between the handle 3 and the corresponding handle retaining element 4 is established. Fig. 13e The lid 1 with the attached handle 3 is shown.
[0100] In Fig. 14 Figure 1 shows a sectional view of the fifth embodiment of a lid 1. The handle 3 is positively connected to the handle retaining elements 4 at its first end 3b and its second end 3c.
[0101] As shown in the sectional view of the fifth embodiment of a lid 1 in Fig. 15a As shown, the inner section of the inner connecting section 4b is designed as a curved surface such that this contact surface 4d (see Fig. 15b ) corresponds to the circumferentially curved surface of the recess 27a of the cover element 20.
[0102] In Fig. 15b A detailed view is shown, revealing that the first end 3b of the handle 3 is arranged, at least partially, in an undercut 4d of the handle retaining element, thereby creating a positive-locking connection. The first end 3b also has a chamfer 3s in the area of the hole 3a of the handle 3, so that connecting the handle 3 to the handle retaining element 4 is easier by simply sliding it on. The overlap B between the outer connecting section 4a of the handle retaining element 4 and the first end 3b of the handle 3 is preferably between 1 mm and 2 mm, preferably approximately 1.5 mm. The outer diameter of the outer connecting section 4a of the handle element 4 is therefore, in particular, between 2 mm and 4 mm, preferably approximately 3 mm, larger than the inner diameter of the hole of the first end 3b of the handle 3. This also applies accordingly to the connection of the second end 3c of the handle 3 with the other handle element 4.
[0103] Fig. 16 Figure 100 shows a schematic representation of an exemplary method for manufacturing the fifth embodiment of a lid 1. The exemplary method 100 shown comprises the following steps: In one step 110 ,In a step 120, a lid element 20 is manufactured, in particular by injection molding, and preferably comprises or consists of polypropylene, and has on an inner surface 21 of the lid element 20 a lid thread 24 for a threaded connection with a container thread 2c of a liquid container 2, in particular a beverage bottle, preferably a water bottle. In a further step 120, a sealing retaining element 30 is manufactured, in particular by injection molding, and preferably comprises or consists of polypropylene, wherein the sealing retaining element 30 has a projection 31 extending outwards in the radial direction R from an outer circumference 30b of the sealing retaining element 30.In step 130, the sealing retaining element 30 is joined to the lid element 20 by means of microwave welding, in particular by applying microwaves with an energy of at least 100 watts, preferably at least 200 watts, and / or at most 500 watts, preferably at most 400 watts, and / or a frequency of at least 5 kHz, preferably at least 10 kHz, and / or at most 30 kHz, preferably at most 20 kHz, and / or a time of at least 0.05 seconds, preferably at least 0.10 seconds, and / or at most 0.30 seconds, preferably at most 0.20 seconds. Particularly preferably, the application of microwaves can be carried out with an energy of 259 watts and a frequency of 14.93 kHz and a time of 0.15 seconds.In step 140, a sealing element 40, which is elastically deformable at least in sections, is inserted into a sealing position such that the sealing element 40 is arranged inside the cover element 20 and is held inside the cover element by means of the projection 31 of the sealing retaining element 30. In step 150, two handle retaining elements 4 are positioned in holes 17 of a cover outer element 10, wherein the handle retaining elements 4 each have an outer connecting section 4a and an inner connecting section 4b, wherein the outer connecting section 4a of the handle retaining element 4 is arranged in the region of the outer surface 11 of the cover outer element 10 and the inner connecting section 4b of the handle retaining element 4 is arranged in the region of the inner surface 12 of the cover outer element 10.In step 125b, the lid element 20 is inserted into the lid outer element 10, wherein the lid element 20 has a recess 27a for each of the handle retaining elements 4 for connection with the inner connecting section 4b of the respective handle retaining element 4, and the recesses 27a receive the inner connecting section 4b of the respective handle retaining element. In step 125c, the lid element 20 is joined materially to the lid outer element 10 by arranging the lid element 20 inside the lid outer element 10 and forming an adhesive bond between the lid element 20 and the lid outer element 10.In step 160, producing a positive locking detachable connection, in particular a snap connection, between a hole 3a at a first end 3b of a handle 3 and one of the handle retaining elements 4 and a positive locking detachable connection, in particular a snap connection, between a hole 3a at a second end 3c of the handle 3 and one of the handle retaining elements 4. Bezugszeichenliste
[0104] 1 Lid 1a Lid opening 2 Liquid container 2a Container body 2b Container opening 2c Container thread 3 Handle 3a Hole in the handle 3 Top end of the handle 3c Second end of the handle 3s Bevel at the hole of the handle 3x Connecting sections of the handle 4 Handle retaining element 4a Outer connecting section of the handle retaining element 4b Inner connecting section of the handle retaining element 4c Undercut of the handle retaining element 10 Lid outer element 10x Recesses of the lid outer element 11 Outer side of the lid outer element 12 Inner side of the lid outer element 13 Cylindrical section of the outer side of the lid outer element 14 Cylindrical section of the inner side of the lid outer element 15 Lid top section of the outer side of the lid outer element 16 Section of the inner side of the lid outer element 17 Hole in the outer cover element 20 Cover element 20a Connection section of the cover element 20b Recess of the cover element 20c Connection element receptacles of the cover element20d Connecting element receptacles of the lid element 20s Element of the lid element 21 Outer side of the lid element 22 Inner side of the lid element 23 Cylindrical section of the outer side of the lid element 24 Lid thread of the lid element 25 Lid element top section 26 Receptacle of the lid element 27 Recesses of the lid element 27a Recess of the lid element for connection with the inner connecting section of the handle retaining element 28 Edge section of the lid element 29 Receptacle section of the lid element 30 Seal retaining element 30a Connecting section of the seal retaining element 30b Outer circumference of the seal retaining element 31 Projection of the seal retaining element 32 Underside of the seal retaining element 38a Connecting element of the seal retaining element 38b Connecting element of the seal retaining element 38s Hook of the connecting element of the seal retaining element 38x Recesses of the seal retaining element 39 Insertion section of the sealing retaining element 40 Sealing element40o Top of the sealing element 40u Bottom of the sealing element 42 Sealing surface of the sealing element 43 Cover section of the sealing element 44 Handle of the sealing element 45 Recess of the handle of the sealing element 46 Insertion contour of the sealing element 48 Retaining section of the sealing element 50 Cavity of the sealing retaining element 60 Undercut 100 Procedure 110-160 Procedure steps A Central axis of the cover B Overlap between outer connecting section of the handle retaining element and first or second end of the handle D Distance between projection of the sealing retaining element and retaining section of the sealing element R Radial direction
Claims
1. Lid (1) for closing a liquid container (2), in particular a beverage bottle, preferably a water bottle, the lid (1) comprising: - a lid element (20) having on an inner surface (22) of the lid element (20) a lid thread (24) for a threaded connection with a container thread (2c) of a liquid container (2), in particular a beverage bottle, preferably a water bottle; - a sealing retaining element (30) connected to the lid element (20), wherein the sealing retaining element (30) has a projection (31) extending outwards in a radial direction (R) from an outer circumference (30b) of the sealing retaining element (30), wherein the projection (31) is arranged and designed such that an undercut (60) formed by the projection (31) for holding a sealing element (40) is formed between the projection (31) and the lid element (20); and - a sealing element (40).which is at least partially elastically deformable and has a retaining section (48) extending inwards in a radial direction (R), wherein the sealing element (40) can be arranged in a sealing position in which the sealing element (40) is arranged inside the cover element (20) and the sealing element (40) is held inside the cover element (20) by means of the projection (31) of the sealing retaining element (30), wherein the sealing element (40) can be removed from the cover element (40) by means of elastic deformation of the sealing element (40).
2. Lid (1) according to the preceding claim, comprising - a lid outer element (10), wherein the lid element (20) is arranged inside the lid outer element (10) and is connected to the lid outer element (10), wherein preferably the lid outer element (10) has an outer surface (11) of the lid outer element (10) and an inner surface (12) of the lid outer element (10), and the lid element (20) has an outer surface (21) of the lid element (20) and an inner surface (22) of the lid element (20), and the outer surface (21) of the lid element (20) is connected to the inner surface (12) of the lid outer element (10), preferably by means of a material-bonded connection, in particular by means of an adhesive connection.
3. Cover (1) according to one of the preceding claims, wherein the projection (31) of the sealing retaining element (30) is formed in a radially outwardly directed convex shape along the outer circumference (30b) of the sealing retaining element (30), and / or wherein the retaining section (48) of the sealing element (40) is formed in a radially inwardly directed convex shape, and / or wherein the extension of the projection (31) of the sealing retaining element (30) in a radially outward direction (R) is so large that the projection (31) of the sealing element (30) in a radially outward direction (R) at least partially projects beyond the retaining section (48) of the sealing element (40).
4. Lid (1) according to one of the preceding claims, wherein a distance (D) is formed between the retaining section (48) of the sealing element (40) and the projection (31) of the sealing retaining element (30) in a direction orthogonal to the radial direction (R), wherein the distance (D) is preferably at least 0.25 mm, particularly preferably at least 0.5 mm, in particular at least 1 mm, and / or wherein the distance (D) is preferably at most 5 mm, particularly preferably at most 2.5 mm, in particular at most 1.6 mm, and / or wherein the sealing retaining element (30) is materially connected to the lid element (20), preferably welded, in particular by means of microwave welding.
5. Lid (1) according to one of the preceding claims, wherein the sealing element (40) has an insertion contour (46) on a top side (40o) of the sealing element (40) and the lid element (20) has a receiving contour (26) on a side facing the sealing element (40), and wherein the insertion contour (46) of the sealing element (40) and the receiving contour (26) of the lid element (20) are designed to correspond to each other such that the insertion contour (46) of the sealing element (40) can be inserted precisely into the receiving contour (26) of the lid element (20), and / or wherein the sealing element (40) has a sealing surface (42) on a bottom side (40u) of the sealing element (40) for forming a seal with a container opening (2b) of a liquid container (2), in particular a beverage bottle, preferably a water bottle, wherein preferably the The sealing surface (42) has several elevations and depressions,which are preferably circular and / or concentric in shape.
6. Lid (1) according to one of the preceding claims, wherein the sealing element (40) has a handle (44) extending towards a lid opening (1a) of the lid (1) for pulling the sealing element (40) out of the lid element (20), wherein preferably the handle (44) of the sealing element (40) has a recess (45), preferably circular, which is preferably arranged on a side of the handle (44) facing a central axis (A) of the lid (1), and / or wherein the sealing element (40) has a cover section (43) that completely covers the sealing retaining element (30) in the direction of the lid opening (1a), and / or wherein the sealing retaining element (30) has a cylindrical insertion section (39) and the lid element (20) has a cylindrical receiving section (29), wherein the insertion section (39) of the sealing retaining element (30) is inserted precisely into the receiving section (29) of the cover element (20).
7. Lid (1) according to one of the preceding claims, wherein the lid element (20) has a connecting section (20a) which has a recess (20b), preferably arranged circularly around a central axis (A) of the lid (1), in particular in the form of a groove, wherein the sealing retaining element (30) has a connecting section (30a) corresponding to the connecting section (20a) of the lid element (20), and wherein the connecting section (20a) of the lid element (20) is materially bonded to the connecting section (30a) of the sealing retaining element (30), wherein preferably the connecting section (30a) of the sealing element (30) is materially bonded to the recess (20b) of the connecting section (20a) of the lid element (20) on both sides.
8. Lid (1) according to one of the preceding claims, wherein the lid element (20) comprises or consists of plastic, preferably in the form of a thermoplastic, in particular polypropylene, and / or wherein the sealing retaining element (30) comprises or consists of plastic, preferably in the form of a thermoplastic, in particular polypropylene, and / or wherein the sealing element (40) comprises or consists of elastomer, preferably in the form of silicone, in particular in the form of food-grade silicone, and / or wherein the lid outer element (10) comprises or consists of metal, preferably in the form of steel, in particular stainless steel, and / or wherein the sealing element (40) has a Shore A hardness of at least 25 Shore A 3s, preferably at least 35 Shore A 3s, particularly preferably at least 45 Shore A 3s, and / or wherein the sealing element (40) has a Shore A hardness of at most 75 Shore A 3s.preferably having a Shore A hardness of at most 65 Shore A 3s, particularly preferably having a Shore A hardness of at most 55 Shore A 3s, and / or wherein the sealing element (40) has a Shore A hardness of 50 Shore A 3s.
9. Lid (1) according to one of the preceding claims, wherein the lid (1) has two handle retaining elements (4) and wherein the lid outer element (10) has two holes (17) for receiving the handle retaining elements (4), wherein the handle retaining elements (4) each have an outer connecting section (4a) and an inner connecting section (4b), wherein preferably the outer connecting section (4a) of the handle retaining element (4) is arranged in the area of the outside (11) of the lid outer element (10) and the inner connecting section (4b) of the handle retaining element (4) is arranged in the area of the inside (12) of the lid outer element (10).
10. Lid (1) according to one of the preceding claims, wherein the lid (1) has a handle (3) having a first end (3b) and a second end (3c), wherein a hole (3a) for forming a positive-locking, preferably detachable, connection, in particular a snap connection, with one of the handle retaining elements (4) is arranged at the first end (3b) of the handle (3), and a hole (3a) for forming a positive-locking, preferably detachable, connection, in particular a snap connection, with one of the handle retaining elements (4) is arranged at the second end (3c) of the handle (3), wherein preferably an undercut (4c) is formed on each of the handle retaining elements (4) between the inner connecting section (4b) and the outer connecting section (4a), and the outer connecting section (4a) of each handle retaining element (4) has an outer diameter of at least 1 mm, preferably at least 2 mm.is larger than the inner diameter of the hole (3a) at the first end (3b) of the handle (3) and / or the hole (3a) at the second end (3c) of the handle (3) and is at most 6 mm, preferably at most 4 mm, smaller than the inner diameter of the hole at the first end (3b) of the handle (3) and / or the hole (3a) at the second end (3c) of the handle (3).
11. Lid (1) according to one of the preceding claims, wherein the lid element (20) has a recess (27a) for each of the handle retaining elements (4) for connection with the inner connecting section (4b) of the respective handle retaining element (4), wherein preferably each of the recesses (27a) for connection with the inner connecting section (4b) of the respective handle retaining element (4) has a surface curved in the circumferential direction of the lid element (20) and the inner connecting section (4b) of the respective handle retaining element (4) has a curved contact surface (4d) corresponding to this curved surface.
12. Liquid container (2), preferably in the form of a beverage bottle, in particular in the form of a water bottle, comprising: - a container body (2a), in particular in the form of a bottle body, for receiving liquids, in particular water, wherein the container body (2a) has a container opening (2b) and a container thread (2c), and - a lid (1) according to one of claims 1-11, wherein the lid thread (24) of the lid (1) is designed to engage in the container thread (2c) of the container body (2a) and to create a detachable threaded connection between the lid (1) and the container body (2a).
13. Method (100) for manufacturing a lid (1), preferably a lid (1) according to any one of claims 1-11, the method (100) comprising: - manufacturing (110), in particular by injection molding, a lid element (20), which preferably comprises or consists of polypropylene, and which has on an inner surface (22) of the lid element (20) a lid thread (24) for a threaded connection with a container thread (2c) of a liquid container (2), in particular a beverage bottle, preferably a water bottle; - manufacturing (120), in particular by injection molding, a sealing retaining element (30), which preferably comprises or consists of polypropylene, wherein the sealing retaining element (30) has a projection (31) which extends outwards in a radial direction (R) from an outer circumference (30b) of the sealing retaining element (30); - joining (130) the sealing retaining element (30) with the lid element (20);- Inserting (140) a sealing element (40), which is elastically deformable at least in sections, into a sealing position, such that the sealing element (40) is arranged inside the cover element (20) and is held inside the cover element by means of the projection (31) of the sealing retaining element (30).
14. Method (100) according to the preceding claim, the method (100) comprising: - manufacturing (125a) a lid outer element, preferably made of steel, in particular stainless steel; and / or - joining (125c) the lid element (20) with a lid outer element (10) by arranging the lid element (20) inside the lid outer element (10) and arranging an adhesive bond between the lid element (20) and the lid outer element (10).
15. Method (100) according to one of claims 13-14, wherein the material-bonded joining of the sealing retaining element to the lid element is carried out by microwave welding, in particular by applying microwaves with - an energy of at least 100 watts, preferably at least 200 watts, and / or of at most 500 watts, preferably at most 400 watts, and / or - a frequency of at least 5 kHz, preferably at least 10 kHz, and / or of at most 30 kHz, preferably at most 20 kHz, and / or - a time of at least 0.05 seconds, preferably at least 0.10 seconds, and / or of at most 0.30 seconds, preferably at most 0.20 seconds.
16. Method (100) according to one of claims 13-15, the method (100) comprising: - positioning (150) two handle retaining elements (4) in holes (17) of the lid outer element (10), wherein the handle retaining elements (4) each have an outer connecting section (4a) and an inner connecting section (4b), wherein preferably the outer connecting section (4a) of the handle retaining element (4) is arranged in the region of the outside (11) of the lid outer element (10) and the inner connecting section (4b) of the handle retaining element (4) is arranged in the region of the inside (12) of the lid outer element (10);and / or - inserting (125b) the lid element (20) into the lid outer element (10), wherein the lid element (20) has a recess (27a) for each of the handle retaining elements (4) for connection with the inner connecting section (4b) of the respective handle retaining element (4), and the recesses (27a) accommodate the inner connecting section (4b) of the respective handle retaining element; and / or - forming (160) a positive-locking, preferably detachable, connection, in particular a snap connection, between a hole (3a) at a first end (3b) of a handle (3) and one of the handle retaining elements (4), and a positive-locking, preferably detachable, connection, in particular a snap connection, between a hole (3a) at a second end (3c) of the handle (3) and one of the handle retaining elements (4).