DE20209535U1 - Stackable plastic lid with label for container closure has a circumferential edge bulge with stacking ribs and alignment ribs which extend into a label locator area of a lid below - Google Patents

Abstract

Two or more lids may be symmetrically stacked above one another using a bulge-shaped edge(2a). Each lid edge has circumferentially spaced stacking ribs(40a,40b,40c) which are supported on an upper side of a bulge edge of a lid below and prevent overlapping apron areas from gripping each other. An alignment rib extends down to the upper side of the edge bulge of a lower lid and engages in a positioning recess(20) or rotation restrictor of the lower lid to prevent relative rotation between the stacked lids. The lid closes a container and the circular circumferential U-shaped edge(2a) surrounds a lid panel(2b). An upper side of the edge lies above the panel and an apron area below. The symmetrical inner wall of the edge has a recess(20) in which a non-symmetrical tab part(11) of a label(10) covering the entire panel is located. The lid can be reclosed with inward projecting bumps on the apron which grip below an edge section of a container. Stacking ribs(40a40b,40c) are spaced at 30-120[deg], preferably 60[deg]. The edge bulge is open facing the base. No contact occurs between rotation restrictors and aligning ribs of stacked lids. When stacked a projecting aligning rib reaches below the upper side of the lid edge below to at least half the height of the edge bulge between lid panel and upper side. Alignment ribs and stacking ribs have a similar thickness to the lid. Alignment ribs and edge recesses are located on opposite sides of the lid. An arc-shaped rigid handgrip(3) is located on the edge near an alignment ribs and symmetrically between two stacking ribs. A narrow flexible joint area is created between an engaging bump and an adjacent stacking rib close to the start of the apron. An independent claim is included for a process for manufacturing the lid in which: a) a label is placed in an injection molding tool cavity with the non-symmetric label tab section located in an appropriate holding area; b) plastic is injected to form a lid on which the label is attached; c) the lid with label is demolded and has an edge with an aligning rib, positioning recess or rotation restrictor surrounding the non-symmetric label holding area which acts in conjunction with an aligning rib of similar dimensions on the following molded lid.

Description

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Stackable plastic lid with alignment aids for stacking

The invention relates to a plastic lid according to one of the independent claims 1 to 3 or a method for producing such a lid by, for example, injection molding.

Especially with symmetrical lids, it is often difficult to insert a label into the lid surface that

&iacgr;&ogr; has a regularly consistent circumferential position in order to lie in a fixed orientation position relative to the lid. This problem begins during production, when labels are introduced using in-mold labeling, for example, and are first inserted into the forming tool, which then forms the lid to be formed using an injection molding process and integrates the label in the process. There is extensive randomness in the orientation of each label relative to a lid, which is particularly apparent when the plastic lid has a grip tab or a handle section, compared to which the asymmetry is particularly noticeable, especially since the path of an IML label from an initial stack to the mold can pass through several stations and has several possibilities of changing its circumferential position or of making it random, which then manifests itself in a correspondingly uneven position of the respective label on the lid.

The invention has set itself the task of remedying this situation and proposing a design of a lid and a label which will ensure comprehensive regularity in the production of a plastic lid.

The above-mentioned tasks are solved with a comprehensive alignment aid on the underside of each cover, which engages in an upward-facing anti-twist device, which is molded into the edge section of the underlying cover or is molded out of it, for example as

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Bulge or as an inward-facing secant wall, for interaction (not necessarily touching interaction) with the alignment aid. The anti-twisting device on the upward-facing side of the lid is also used as an edge holder for the label on the lid surface, or the asymmetry of the label for the precise positioning of the label before it is inserted into the forming tool, i.e. before the lid surface is created.

The tool has an asymmetry that accommodates the edge of the label, which subsequently becomes apparent again in the lid formed and here takes on the additional task of maintaining a comprehensive alignment during stacking even after ensuring the comprehensive position of the label as a technical function.

The invention creates a surprising dual usability of the solution elements used, not only to create the comprehensive position continuity of the label, but also to create a comprehensively consistent position of lids in a stack of the manufactured lids. They can also be stored in high stacks in a way that prevents them from twisting.

The edge holder in the edge area of the formed lid completely accommodates the asymmetrical section of the label, in particular it is essentially adapted to it, so that the label can lie flat on a mold surface in the tool without being overmolded or covered by plastic during the process of molding the plastic, usually in the injection molding process. The asymmetrical section provided on the label, which provided assistance during the upstream handling insofar as a circumferential alignment of the label was possible and thus prepared for a correct insertion or a flat but correct placement of the label on the mold, does not interfere with the actual molding process and is accommodated or "swallowed" by the edge holder, a correspondingly limited asymmetrical section of the bead-shaped edge area. In the creation of the lid with the edge bead, an optically

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attractive structure that is no longer subject to random decoration and that - especially when the asymmetry section is aligned with the handle section - does not cause any visual displeasure or discomfort. In continuation of this chain of development, the edge mount also serves to align the entire surface of a projection that protrudes from the other side of the lid, or from the other side of a lid stacked above it, and interacts with this edge mount in such a way that a positioning aid, alignment aid or

&iacgr;&ogr; A rotation lock is created.

Although claim 1 describes the stacked state of two lids, it objectively describes the structural design of only one of these lids, but with the functional connection of an upper side and a lower side of a lid, which as such do not functionally interact, but rather with the other lid stacked above or below them.

Stacking devices, in particular stacking ribs, can also be provided in the U-shaped edge to prevent the apron edge from jamming when stacking. The stacking ribs have such an axial extension that the protruding alignment aid and the edge holder used as a positioning aid to block excessive twisting do not come into contact with one another and jamming cannot occur here either. The corresponding dimensions, circumferential distances, circumferential extensions and axial heights are coordinated with these specifications.

The described stacking devices have a combination effect of several effects that work synergistically together as stacking webs that extend in a radial direction. Firstly, a very voluminous or large bead-shaped edge must be stiffened or stabilized in the case of thin-walled parts with wall thicknesses between 3/10mm and 5/10mm. This stiffening function is taken over by the radially oriented webs, which serve as stacking ribs with free edges pointing downwards, but at the same time do not strengthen the bead-shaped edge too much.

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stiffen it so that it still has sufficient elasticity in its skirt section to allow cams to snap over an edge flange of the container and also to make it possible to release it without too much force.

Here, a recess (claim 27) between the respective stacking rib and a respective web extension is to be addressed, which defines a respective articulation point G or a joint line all the way around, but at least in the area of the locking cams and the

γ support points to maintain the elasticity for the intended purpose (for re-closing and opening), but to make the round apron not too flexible, which in turn is ensured by the web extension with a residual web at the joint point (claim 28). These several effects work together in the sense of a mutually supporting optimization.

The edge recess prevents the plastic material from covering the label when it is stuck on during the molding process, and in particular from covering the asymmetry section used for its upstream alignment. If there is no "over-injection" of plastic, it can also be ensured that the lid is stuck on during the molding process that the label is level throughout the entire injection molding process in order to achieve a good surface quality and a full integration of the label on the surface section of the plastic.

Advantageous embodiments can be found in the dependent claims.

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Embodiments complement and explain the invention.

Figure 1 is a side view of a container with body 1 and lid

Figure 2 is a view from the inside of the container to the underside of the lid.

Figure 2a is a workflow of loading a label into the forming machine 100.

Figure 3 is a section through a stacking rib 40, for example 40a of Figure

Figure 4 is a sectioned view of two stacked lids.

Figure 5 is a section of two stacked lids cut at a circumferential location.

Figure 6a, Figure 6b are two sectional views of the lid.

Figure 7 is a section through an alignment rib 60 near the handle tab of the lid.

Figure 8 is a section of the lid in the snapped-on state on the edge Ib of the hull.

Figure 9a, Figure 9b, Figure 9c, Figure 9d, Figure 9e are different variants of the positioning aid or anti-twisting device in the edge area of the lid, which can be used with the same effect for the "edge holder" 20 according to the following description.

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Figure 1 shows a side view of a closed container, wherein a lid 4 with a strongly pronounced bead-shaped edge region 2, which is designed as a downwardly open annular channel, closes the body 1 from above. The bead-shaped edge region has an upper surface section 2e and an apron section 2d projecting downwards on the outside. The handle section 3 is arranged in a projecting manner at one point on the apron section, wherein the lid as such is designed to be relatively rigid, the

Î The apron section 2d can, however, bend elastically and yieldingly in order to snap over an edge flange of the container body 1, which is covered by the lid in Figure 1, and to be able to be released again from it. The lid is thus a resealable lid made of plastic, with thin plastic walls being used, such as those that can be produced, for example, using an injection molding process or a deep-drawing process.

The container body 1 has a bottom edge la which runs all the way around for setting up the container. The walls are polygonal with polygon sections l', l", but their upper end merges into a substantially circular edge flange Ic which is shown in section in Figure 8. Figure 8 also shows the engagement of a cover shown in section at the point which is covered in Figure 1 due to the side view. Radially inside the inner end of the bead-shaped edge 2 there is a cover panel as a "panel", as can be seen in Figure 2 in the bottom view of the cover (seen from the container).

A label 10 is arranged on the cover surface facing outwards, as seen from above in Figure 1, which can only be seen as a dashed line in Figure 2 due to the view from the bottom. This label is positioned as shown in section in Figure 7 or Figure 3. It essentially covers the entire surface of the mirror and borders on an inner wall section 2c of the edge area.

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The method of how a label is firmly connected to the lid surface as a non-circumferentially directed IML label (in-mold label) is known, for example from DE 196 04 063 A1 (Schmalbach-Lubeca), column 1, lines 1 to 38. The label is printed and prefabricated and cut to the correct size. Labels according to Figure 2a are passed from a stack 80 or 81 to an in-mold labeling machine 100 with a gripper (not shown here) via paths 82 or 82b and 85 and there each is inserted as an individual label (label) into a corresponding receptacle 91 of a molding tool 90. The tool then closes and plastic is injected in the injection molding process, which gives the shape of the lid shown below.

In the mold, an asymmetry 90b is arranged on the circular mold tool holder 91, 90a, which forms the bead-shaped edge area. It is complementary in the lid shape shown here in section 20 in Figure 2 and also recognizable in many of the other figures, in particular in three-dimensional form in Figure 9a. The label has an asymmetry corresponding to section 20 or 90b, which ensures that the label is always positioned in the same way, since it is assumed that the asymmetry on the label is also aligned circumferentially with the orientation of the label and its decoration, which is explained in Figure 2a. The label then usually lies in the tool 100 in such a way that it is positioned circumferentially the same and a lid produced by injection molding has the label attached to the lid surface 2b as shown in Figures 3 and 7 and symbolically also in Figure 2. In Figures 9, the label 10 is not shown in place, but only the lid without a label, but the lid surface 2b on which the label is placed is readily visible.

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Due to the shape of the asymmetry in the edge region 2, the label 10 with a correspondingly shaped asymmetry 11 can be inserted there and will not protrude from the plane of the lid surface 2b or be covered by a plastic on the visible side during the molding process.

The resulting recess 20 according to Figures 2 and 2a is an arc section which is directed outwards and engages in the bead-shaped area, as can be seen plastically from

&iacgr;&ogr; Figure 9a and can be seen when viewed from below in Figure 2. The shape is oriented so that it is located close to a handle. Due to the curved shape of the handle for lifting the lid and the curved asymmetry in the edge area, an attractive appearance is achieved.

The manufacturing process and the overall alignment of the label brought to the forming machine 100 will be explained in more detail. Two alternative stacks 80, 81 of labels that are not aligned or not aligned enough, and that can have a random position, are possible as a starting point. The stack 80 stores the labels and places them individually from above on an intermediate storage area 83 via the gripper path 42b or another transport path of a similar type. Alternatively, the label can also be individually separated from below, with a slider 81b, several of which can be attached to the circumference in a radially movable and controllable manner, just as a fixed lock 81a is also possible. A radial movement of the locking section 81b releases a label and it is brought to the intermediate storage area 83 on the conveyor path 82a. These two types of stacking and feeding can be used alternatively or cumulatively. The intermediate storage 83 has a receptacle which is surrounded by a raised edge 84 and is adapted to the shape of the label. The top view in the upper part of Figure 2a shows the flat plate 83a and the peripheral edge 84 as well as a peripheral asymmetry 83b, which is designed here as a protruding curved section. The label is attached to a correspondingly designed asymmetry, here the

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Arc section 11, precisely aligned around the circumference. Another gripper then moves the label with the circumferentially fixed nose as an example of an asymmetry section 11 individually to the forming machine 100, where the label is applied to a surface 91 by adhesive forces, for example by an electrostatic charge. The label lies snugly on the surface 91, precisely aligned around the circumference with its asymmetry section 11 on a corresponding receptacle 90b, which ensures the symmetry of the circumferential form groove 90a at the location of the

&iacgr;&ogr; asymmetry section 11 of the label. The edge of the label 10a adjoins the mold cavity 90a, from which the bead-shaped edge 2 according to Figures 1 and 2 is formed when a second mold part, not shown here, closes the molding machine 100 and plastic is injected.

The label is attached to the cover surface 2b and its positioning section, which was used for alignment in the intermediate storage, is received by the edge holder 20, which corresponds to the asymmetry 90b of the mold cavity. This edge holder has further functions that do not only serve to accommodate the asymmetry of the label in the sense of receiving a label section that is only partially asymmetrical at the edge.

In the bottom view of the lid (seen from the container), further elements are arranged in the relatively large and bulky bead-shaped edge region 2. First of all, it should be repeated that the edge region has an internal channel-shaped open space 2a, which is delimited by an outer wall 2d as an outer apron, a curved section 2e as a channel bottom and an inner wall 2c towards the lid surface. The lid surface 2b was already mentioned and accommodates the label 10. The asymmetry 11 of the label 10 matches geometrically the asymmetry 20 of the edge region.

Projections 40 are provided at particularly regular circumferential intervals, which are preferably designed as web-like projections 40a, 40b, 40c. Their spatial geometric shape can be seen more clearly in the other figures, such as figures 3,

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5 and 8, their circumferential orientation can be seen in the two sectional views of the lid according to Figures 6. The web sections have an axial height and extend radially, reference being made to Figure 3 for the description of the geometric shape of these webs 40 used for stacking.

The reference number 40 is intended to be a general notation for several webs 40a, 40b and 40c as well as other webs.

The projections that protrude into the channel 2a fulfill a stacking function, as can be seen in Figure 5 with at least two stacked lids. The lower edge 41 of a stacking rib designed as a web is essentially horizontal and engages an upper section 2e' of the edge region 2, on which it rests linearly in the stacked state (in the sense of a tangent to a circular geometry). The lower straight section 41 has such an extension that slight radial displacements can be tolerated and only the upper section of the curved bead of the edge region is actually touched, in particular only an area of a maximum of 30°. It is actually a lens-shaped contact if an ideal state and circular geometry is assumed at the channel base 2e of the edge bead 2.

When stacked, the upper apron 2d reaches over the apron 2d' underneath with its lower - slightly widened - end section 2f, which provides a comprehensive lock against excessive radial slipping when a large number of lids are stacked. The respective axial distance of the individual lids is determined by the depth or height of the web 40, which does not extend further than a support section 50 intended for snapping on, which will be explained later.

The slight widening of the end section 2f improves handling when unstacking downwards, with retaining lugs distributed around the circumference releasing the lowest lid, while

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other holders still hold the wider end sections of the apron section above in order to hold back the cover above.

Where reference symbols were mentioned in Figure 5, the crossed-out reference symbols apply to the cover underneath and the non-cross-out reference symbols with the same designation apply to the cover above. The same applies to Figure 4, which will be explained later.

In Figure 2, one of the support points 50 is shown as 50a, assigned to a stacking rib 40a or a locking cam 30a. Here too, the designation 50 generally applies to all support points or such sections 50a, 50b, 50c equally.

The projections 40 referred to as "support ribs" do not necessarily have to be web-like, they merely protrude into the circumferential channel 2a in the case of a circular cover, whereby the ribs can also have a pin-like or block-like shape, with the previously described length extension, relative to the support section 50. This should not reach the length extension (in the axial direction).

The asymmetry 20 is arranged between two of the circumferentially distributed web sections 40a, 40b, which is located in the area of the grip tab 3. This asymmetry 20 serves as the edge holder of the label section 11 when the label is placed on the molding surface 91. Adapted to the shape or design of this asymmetry, an alignment rib 60 extending circumferentially at least in sections is provided on the underside of the lid, which can be seen more clearly in Figures 4 and 7. Its shape and circumferential extension is adapted to the curved shape of the edge holder 20, so that together with it it can form a twist lock or a positioning aid when the lids are stacked on top of one another, as Figures 4 and 5 illustrate.

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The circumferential section 60, which begins at the radially outer end of the cover surface 2b, where the bead-shaped edge area also begins, extends axially in such a way that it just does not reach the asymmetry 20' of Figure 4, which now serves for positioning, and is also placed radially in such a way that contact does not occur, but only a securing position is assumed. Excessive circumferential twisting is blocked.

&iacgr;&ogr; The asymmetry 20 previously used as an edge holder thus serves a further purpose in conjunction with the alignment rib 60, namely the blocking of excessive circumferential twisting in the stacked state.

For this purpose, the alignment rib extends at least to the height 2e of the bead-shaped edge region, preferably also deeper, but not so deep that it reaches the cover surface 2b ¹ in Figure 4. A preferred compromise between minimum height extension and maximum height extension lies in the range between 40% and 60% of the height of the U-shaped edge bead between the radially outer end of the cover surface 2b and the axial height 2e of the edge bead.

In other words, it can be described that the alignment aid (the piece 60 designed as a rib and extending circumferentially at least in sections) is "aligned" with the positioning aid. Due to the position of the positioning aid 20 near the tab 3, the alignment rib is also arranged here. It cannot be seen visually from the outside and, when the lid is closed on the container body 1, it has no contact function. It is only used for the stacking function and for securing the position of a large number of stacked lids.

Due to the existing tolerances of alignment rib 60 to positioning aid 20' and the axial extension of stacking rib 40 with stacking edge 41 as well as the extensive adaptation of apron 2d to the underlying apron 2d'

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This results in reliable stacking with regular orientation throughout an entire (usually very high) stack of lids. However, tolerances can be permitted, since only the stacking rib 40 rests with its lower end edge 41 on the upper curved section 2e' of the lower lid, i.e. it touches it. Jamming does not occur.

At the location of the stacking ribs 40, for example 40a, a continuation of this rib is preferably arranged, which is illustrated with 42a in Figure 3. It leads into the apron section 2d and to the support point 50, which forms a recess 51, in the continuation of which a locking cam 30a is arranged.

The reference number 30 is representative of all locking cams 30a, 30b, 30c, ..., as shown in Figure 2.

The locking cam 30a locks over the edge flange Ic, Ib, in particular a horizontal edge Ib of the container, as shown in Figure 8. The locked state of the lid is shown here, which corresponds to the closed state of the container in Figure 1. The stacking rib 40 is at a distance "a" from the circumferentially flat edge flange Ib, so that it cannot touch it. Only the support point 50 rests in contact with this edge flange Ib, and the locking cam 30 engages under the edge flange to secure the lid.

In order for the cover to be reusable, i.e. to be able to be removed and replaced several times, the apron Ib needs a "suitable elasticity", which it receives from a narrow point 44a at the upper end of the web extension 42a, as explained in Figure 3. This articulation point G results on the one hand from a stiffening effect of the expanded rib 40 in the web extension 42a with the simultaneous introduction of a notch-like recess 44, which is formed by two edges 43, 42 that run at an angle to one another and also have a trapezoidal shape.

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Preferably, the entire web, consisting of stacking rib and web extension 42a, can be formed in one piece so that it fulfils a stiffening function of the edge, but at the same time the articulation point G offers the possibility of enabling the elasticity and bending of the apron section 2d in order to be able to place the locking recess 51 over the edge flange 1b, then held by the locking cam 30.

The locking cams 30 extend - as is readily apparent from Figures 6 - considerably further in circumference than the respective web 40 and the web extension with the respective support point 50 at the lower end. The lid thus receives an internal stability despite its voluminous-looking ring edge, which is created at the locking points 30 by the support 50 and its continuation in the web extension 42a up to the internal stiffening of the web shape 40 used as a stacking rib.

It is of course also possible to space these elements 40, 30 and 50 circumferentially from each other, but a simple manufacture and an optimized geometry with functionally optimal design is the combination of all these elements at a common circumferential point and the circumferential spacing of further such functional points, preferably at a distance of at least 120°, or essentially 60°.

Due to the extensively different angular orientation, the two sections in Figures 6 show these functional elements in different views, so that their appearance can also be determined from a mere examination of these two figures. The extensively larger extension of the locking cams 30 can be clearly seen in the cams 30b in Figure 6b.

Other forms and shapes of asymmetry for creating an edge recording, alignment and positioning aid are shown in Figure 9. This primarily concerns the peripheral alignment of a label oriented towards its decoration (for example a face or a tree), but can

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Secondarily and surprisingly, however, they can also be used to perform an additional task when stacking, whereby a fundamentally different function is initially integrated at this point. In this respect, the edge support and positioning aid can extend both radially outwards and radially inwards, and a combination of both is also possible, as shown in Figure 9b by a circular design of a base with an outward-facing indentation in the bead-shaped edge area. A tendon-like design with an essentially vertical

Figure 9c shows a wall 20c which is curved inwards. Figure 9d shows a wall 20d which is similarly chord-like in design to the asymmetry of Figure 9c. Figure 9e shows a significantly higher design of a platform or U-shaped elevation 20e which only extends inwards compared to Figure 9b.

What all of these asymmetries have in common is that they run close to the inner wall 2c of the lid edge area, which here has a pronounced bead-like shape. The corresponding alignment rib 60 will then be designed to be associated and geometrically appropriate, and its shape can be easily imagined even without a separate illustration.

Claims (31)

1. A plastic lid comprising at least two lids ( 4 , 4 ') stacked one above the other and aligned symmetrically to one another, each with a bead-shaped edge region ( 2 , 2 ');
wherein a plurality of circumferentially spaced stacking ribs ( 40 ; 40a , 40b , . . .) are arranged in the respective edge region for placing the upper lid on an upper side ( 2e ') of the beaded edge of the lower lid ( 4 '), without jamming of overlapping apron regions ( 2d , 2d ') on the bead-shaped edge regions;
wherein an alignment rib ( 60 ) extends from the upper lid at least to the height of the upper side of the bead-shaped edge region of the lower lid and cooperates with a positioning aid ( 20 ') of the lower lid to block a substantial relative rotation of the stacked at least two, preferably several lids. 2. A plastic lid of at least two lids ( 4 , 4 ') stacked on top of one another and aligned symmetrically to one another around the circumference, each with a bead-shaped edge region ( 2 , 2 '), wherein a plurality of circumferentially spaced stacking ribs ( 40 ; 40a , 40b , . . .) are arranged in the respective edge region, for the upper lid to rest on an upper side ( 2e ') of the beaded edge of the lower lid ( 4 '), without jamming of overlapping apron regions ( 2d , 2d ') of the bead-shaped edge regions; wherein a projecting alignment aid ( 60 ) extends from the upper lid at least to the height of the upper side of the bead-shaped edge region of the lower lid and interacts with an anti-twist device ( 20 ') of the lower lid to block a significant relative twist of the stacked at least two, preferably several lids. 3. Plastic lid for closing a container ( 1 ), wherein the lid has a circumferentially extending, U-shaped edge region ( 2 ) and a lid mirror ( 2b ), and an upper side ( 2e ) of the U-shaped edge region lies above the mirror and an apron section ( 2d ) of the edge lies below the mirror ( 2b ) or extends thereto; a) wherein the U-shaped edge region has an edge receptacle ( 20 , 20 ') on an inner wall ( 2c ), with an otherwise substantially symmetrical shape of the U-shaped edge and the inner wall ( 2c ) of the edge, b) wherein a label ( 10 ) is placed on the mirror and fastened thereto in such a way that an asymmetrical section ( 11 ) of the label engages in the edge receptacle ( 20 ) for the full-surface contact of the label, which is otherwise provided with a symmetrical edge, on the mirror ( 2b ). 4. Lid with a substantially U-shaped edge region and a mirror portion ( 2 b) to which a label is to be applied, in particular using the in-mould process, wherein a) the label ( 10 ) has a substantially symmetrical, in particular substantially circular outer edge ( 10a ) and at least one point of the edge is provided with an asymmetry ( 11 ); manufactured or producible by a process in which a) the label with the asymmetrical section is inserted into a correspondingly shaped receptacle ( 91 ) of an injection molding tool ( 100 ; 90 ) or is placed flat; b) the lid ( 4 ') is formed by a plastics moulding process, in particular an injection moulding process, and is brought into contact with the label in order to firmly adhere the label to the surface ( 2b ) of the resulting lid; c) the lid with the label fixedly arranged thereon is removed from the mold and has an edge holder, positioning aid, alignment aid or anti-twisting device ( 20 ) at the location of the asymmetrical section ( 11 ) of the label, which completely accommodates the asymmetrical section, in particular substantially corresponds to the shape of the asymmetrical section ( 11 ) of the label ( 10 );
for cooperating with a projection ( 60 ) of a subsequently manufactured lid ( 4 ) which, after its manufacture, is placed on the previously manufactured lid with another label adhering to it, the projection being adapted in its dimensions substantially to the asymmetry section. 5. Lid according to one of the preceding claims, wherein it is designed to be reclosable, in particular with an elastically flexible apron region ( 2 d) with at least one locking cam ( 30 ; 30 a, 30 b) for engaging under an edge section ( 1 b) of a container ( 1 ) closed with the lid. 6. Lid according to one of the preceding claims, wherein the stacking ribs ( 40 ) are arranged at intervals around the circumference, in particular regularly spaced between 30° and 120°. 7. Lid according to claim 6, wherein the ribs ( 40 ) are spaced apart by substantially 60°. 8. Lid according to one of the preceding claims, wherein the bead-shaped edge region ( 2 , 2 ') is open downwards ( 2a ). 9. Lid according to claim 8, wherein the opening is substantially larger than a wall thickness of the wall sections defining the bead-shaped edge region ( 2 c, 2 e, 2 d), in particular also substantially larger than the thickness of the lid surface ( 2 b). 10. Lid according to one of the preceding claims, wherein the anti-twisting device or the alignment aid ( 60 , 20 ) do not interact in a clamping manner, in particular the lids are aligned with one another without touching one another in the stacked state. 11. Lid according to one of the preceding claims, wherein the edge ( 2 ) is circumferentially substantially symmetrical, in particular as a circular edge region of a substantially round lid. 12. Lid according to one of the preceding claims, wherein the alignment aid ( 60 , 60 ') is a projection aligned with an underlying lid ( 4 '), and the alignment aid extends under the upper side ( 2e ) of the edge region at least to substantially half the height of the bead-shaped edge region between the lid surface ( 2b ) and the upper side ( 2e ). 13. Lid according to one of the preceding claims, wherein the edge region encloses a lid mirror ( 2b ) which bears a symmetrical label ( 10 ), except for an asymmetrical section ( 11 ) of the label which is assigned to the edge receptacle ( 20 , 20 '). 14. Lid according to claim 13, wherein the edge receptacle and label asymmetry ( 11 ) have substantially the same shape or geometric shape. 15. Lid according to one of the preceding claims, wherein the alignment aid or alignment rib and/or the stacking ribs have a substantially comparable thickness to the wall thickness of the plastic lid. 16. Lid according to one of the preceding claims, wherein the stacking ribs ( 40 ), locking cams ( 30 ) and support points ( 50 ) on the apron section ( 2d ) of the bead-shaped edge region ( 2 ) are arranged substantially at the same circumferential positions or circumferential points. 17. Lid according to one of the preceding claims, wherein the alignment rib and the edge receptacle ( 20 , 60 ) are arranged in the region of an inwardly facing wall section ( 2c ) of the bead-shaped edge region ( 2 ) and lie on opposite sides of the lid. 18. Lid according to one of the preceding claims, wherein the edge receptacle ( 20 ) is arranged in a transition region between an outer edge of the lid surface and an inner wall of the bead-shaped edge region ( 2 ), in particular radially outward or radially inward relative to the outer edge of the lid surface ( 2b ). 19. Method according to claim 4, wherein the first lid ( 4 ') also receives a downwardly projecting projection ( 60 ') during the forming process of the lid according to feature (c). 20. Lid according to one of the preceding claims, wherein a U-shape of the bead-shaped edge region is larger than an edge step or an edge flange ( 1c , 1b ) of a container body ( 1 ) to be closed. 21. Lid according to one of the preceding claims, wherein a handle, in particular a rigid curved piece ( 3 ) is arranged at the edge region. 22. Lid according to the preceding claim, wherein the positioning aid ( 20 ) and the alignment rib ( 60 ) are preferably located in the region of the handle ( 3 ). 23. Lid according to the preceding claim, wherein the handle ( 3 ) is arranged substantially symmetrically between two of a plurality of stacking ribs ( 40 ) distributed circumferentially in the edge region. 24. Lid according to one of the preceding claims, wherein the anti-twisting device or alignment aid ( 20 , 60 ; 20 ', 60 ') are arranged substantially axially aligned with one another - in the stacked state -, in particular near an inner wall section of the U-shaped edge region. 25. Lid according to one of the preceding claims, wherein the alignment aid or alignment rib ( 60 ) is adapted in its geometric shape to the geometric shape or design of the edge receptacle ( 20 ), in particular as an arcuate section. 26. Lid according to one of the preceding claims, wherein a plurality of locking cams ( 30 ; 30 a, 30 b, 30 c) are arranged distributed on the circumference of the U-shaped channel as a bead-shaped edge region and in each case in the region of a locking cam a support section ( 50 ) and/or a stacking rib ( 40 ; 40 a, 40 b, 40 c) is also located. 27. Lid according to claim 1, 5 or 26, wherein a hinge point (G; 44a) is located between a locking cam ( 30a ) and an associated stacking rib ( 40a , 42a ), in particular near a notch-like recess ( 44 ) which is made in the stacking rib close to the beginning of the apron section ( 2b ). 28. Lid according to claim 1 or 27, wherein at least one, preferably each stacking rib is designed as a radially extending web, with a web extension ( 42a ) extending into the apron section, which are formed integrally with one another and extend essentially only in the axial and radial direction, wherein - a narrow point ( 44a ) of the web is designed as a hinge point (G) for the apron section; - a substantially only radially aligned support section ( 50 ) is located at the end of the web extension. 29. Lid according to claim 1 or 28, wherein a locking cam ( 30 ) is assigned to a respective stacking rib circumferentially, which locking cam extends circumferentially more significantly than a circumferential extension (strength or thickness) of the respectively associated stacking rib ( 40 ). 30. Lid according to one of the preceding claims, wherein the stacking ribs ( 40 ) are oriented substantially radially and the alignment aid or positioning aid ( 20 , 60 ) are oriented substantially circumferentially. 31. Lid according to any preceding claim, wherein a) the stacking ribs have a smaller axial extension than a circumferential apron section ( 2 d) of the bead-shaped edge region ( 2 , 2 '); b) a respective stacking rib does not reach the respective support section ( 50 ) in order not to touch an edge section ( 1b ) of the container body when the lid is closed with the stacking ribs, or to maintain a distance (a) therefrom.