PACKAGING ORDER

Description

[0001] The present illustration relates to a packaging arrangement with a receiving tray, in particular a receiving tray made of cardboard, with a receiving recess and a lid element, in particular a lid element made of plastic, for closing the receiving recess with a lid rim for holding the lid element on the container wall. Furthermore, the following illustration relates to a receiving tray and a lid element which can be used, in particular, in the aforementioned packaging arrangement.

[0002] Packaging arrangements with a tray and a lid are known. Combinations of trays and lids present particular challenges when the tray is made of cardboard with relatively thin and smooth sides and needs to be closed with a plastic lid as quickly and easily as possible. Reference is made in this context, for example, to WO 2018 / 133913 A1, US 3773207 A, and RU 190 177 U. The difficulty lies not only in ensuring easy closure of the tray, but also in ensuring easy opening without compromising the structural stability of the packaging arrangement.

[0003] An object of an embodiment of the present invention can therefore be seen as providing a packaging arrangement which ensures simple and safe closing and opening of a receiving tray with a lid element, wherein the receiving tray should have the highest possible load-bearing capacity relative to the lid element.

[0004] The invention relates to a Packaging arrangement comprising a receiving tray with a tray wall made of cardboard enclosing a tray wall edge, a lid element, in particular made of plastic, with a groove for at least partially receiving the tray wall edge, wherein the tray wall edge includes a tray wall edge edge, an edge edge fold and a locking tab with a resisting edge which in operative connection form a supporting edge, wherein the locking tab is formed by folding the edge edge fold into the receiving tray, wherein the groove has a groove base, a guide joint and an inner flank extending in the receiving tray with a locking projection, wherein the resisting edge is opposite the locking projection and wherein the groove has a skirt flank extending outside along the tray wall edge, wherein a groove wall step with a locking step rounding in the skirt flank is formed in the form of a bulge,wherein the guide joint has a certain height and the support edge has a width which width moves within a range between a dimensioned maximum distance between the locking projection and the guide joint and a dimensioned shortest distance between the locking projection and the guide joint such that the support edge experiences a locking engagement with locking resistance between the locking projection and the guide joint, wherein the height is oriented to the relative flexibility of the skirt flank and / or conversely the relative flexibility of the skirt flank is oriented to the height of the guide joint such that with an outward bending of the skirt flank in the area of ​​the corrugated wall step, the corrugated wall step is movable at least up to the shell wall edge, wherein the shell wall edge and the locking step radius are slidable out of the guide joint.

[0005] It is particularly noteworthy that the locking mechanism created according to the invention and located in the receiving tray provides a versatile and adjustable locking mechanism, which allows for the targeted adjustment of a locking resistance in the interaction between the guide joint, the tray wall or tray edge, and the locking projection. This enables the connection between the receiving tray and the lid element to be easily reopened and also allows for the simple and quick closing of the packaging arrangement according to the invention.

[0006] Crucially, the guide joint creates a lateral enclosure of the shell wall edge, preventing it from slipping laterally out of the groove, bypassing the locking action between the locking tab and the locking projection. The stability of this locking enclosure depends primarily on the depth or height of the guide joint and the locking projection extending from the inner flank. The shape of these projections depends, among other things, on the material used for the receiving shell, such as the thickness of the cardboard.

[0007] The aim is also to be able to design a load-bearing and load-safe locking resistance specifically for the application. The locking resistance is defined as the holding force required to securely hold the contents of the packaging arrangement with a high holding force. At the same time, as already mentioned, it is ensured that the packaging arrangement can be easily closed and reopened.

[0008] The shortest distance according to the invention between the locking resistance and the guide joint is determined in particular also by whether, in the case of this distance, the support edge or the shell wall edge can be enclosed in the guide joint until the locking resistance is reached, or whether the support edge remains guided in the guide joint.

[0009] With regard to the resistance edge and the support edge, according to the invention the support edge and consequently the resistance edge are formed by a locking tab on the shell wall edge.

[0010] The locking tab is formed by a folded edge, which folds into the receiving tray to form the locking tab.

[0011] The edge fold is preferably integrally connected to the shell wall edge and can thus be folded into the receiving shell or its receiving recess or into the inside of the receiving shell and, as part of the shell wall edge, run at least partially enclosed in the guide joint. In this way, the edge fold also serves to stiffen and stabilize the shell wall edge and consequently also the locking resistance according to the invention.

[0012] The folding of the edge flap preferably occurs along an edge bending line, which can, for example, be formed or shaped as an edge groove. Depending on which edge bending line is chosen, or, for example, how deep the edge groove is formed, the folded-over locking tab can spring back up and protrude from the shell wall to a greater or lesser degree. Thus, the edge bending line can, at least in part, influence the aforementioned lateral inclusion.

[0013] A further development of the edge edge fold can also consist of a fixing tab that is preferably connected laterally to the locking tab and preferably runs along the edge of the shell wall, and that the fixing tab is connected to the shell wall over its entire surface. The fixing tab ensures, in particular, that the locking tab can only rise to a reduced extent from the edge of the shell wall. Furthermore, the fixing tab stiffens the locking tab, enabling it to support itself more strongly and precisely against the locking projection to form the desired locking action according to the invention.

[0014] In a further embodiment of the invention, it can be advantageous if the fixing tab in the edge fold is wider than the locking tab. This can result, firstly, in a shorter locking tab being even more rigid to provide even better locking resistance against the locking projection, and secondly, it offers the possibility of equipping the fixing tab with a greater width for a surface-level attachment to the shell wall edge. The surface-level connection between the fixing tab and the shell wall edge is preferably achieved by bonding the fixing tab to the shell wall edge.

[0015] Furthermore, it is generally possible to provide the bending line in the edge fold with greater bending stiffness in relation to the locking tab, possibly by using a shallower bending groove than the fixing tab. It would also be conceivable to provide a bending line only for the fixing tab.

[0016] According to the invention, it is also advantageous if the shell wall edge runs along the inner flank. "Along" in the sense of the invention also includes certain deviations from a parallel course between the shell wall edge and the inner flank. Deviations of ± 20° or, particularly preferably, ± 10° between the shell wall edge and the inner flank are advantageously within the scope of the invention. It has been shown according to the invention that the closer the course between the shell wall edge and the inner flank is to each other, the better the support edge or the locking tab can engage with the locking projection with resistance.

[0017] A particularly advantageous embodiment of the invention consists in equipping the groove, at least in the area of ​​the locking projection and adjacent to the guide joint, with an opening extension. This opening extension preferably serves to open the locking mechanism by pushing or bending the lid element, particularly at this point, over the edge of the tray wall. This allows the tray wall edge to be lifted out of the lateral confinement by the guide joint, thereby enabling the inventive interaction or resistance contact between the resistance edge and the locking projection to be released laterally. In this respect, the opening extension forms an improved opening mechanism for the packaging arrangement at the transition from the guide joint.

[0018] According to the invention, a further development can also consist of the opening extension including a corrugated wall step transitioning from the guide joint. The corrugated wall step forms a threshold which, when overcome by the shell wall edge in a stress-relieving manner, causes the shell wall edge to slide abruptly out of the corrugation. "Stress-relieving" in this sense means the relief of the shell wall edge from the stress it experiences in the guide joint, for example, between the locking projection and the guide joint, and which is relieved when the shell wall edge transitions from the guide joint into the opening extension.

[0019] The groove according to the invention, including the guide joint realized therein, is also formed alongside the inner flank by a skirt flank running on the outside of the shell wall edge.

[0020] The opening extension is formed via or within the skirt flank, specifically as a bulge in the skirt flank. This bulge begins at the transition from the guide joint to the opening extension, through the previously described corrugated wall step, which can also be understood as a jump extension relative to the guide joint in the corrugation and which is part of the opening mechanism according to the invention.

[0021] In the opening mechanism according to the invention, it is further provided that the guide joint is designed to have a height oriented to the relative flexibility of the skirt flank and / or vice versa, the relative flexibility of the skirt flank is designed to be oriented to the height of the guide joint, such that by bending the skirt flank outwards in the area of ​​the corrugated wall step, the corrugated wall step can be moved at least up to a shell wall edge edge defined by the shell wall edge.

[0022] It can also be advantageous if the free end of the skirt flank has a gripping tab with which the opening mechanism according to the invention can be operated. Advantageously, the gripping tab extends vertically outwards in a clearly visible and easily graspable manner, thus protruding laterally from the lid element for easy gripping. As a rule, in a packaging arrangement with several opening extensions, it is sufficient for only one gripping tab to be assigned to each opening extension.

[0023] A particularly advantageous embodiment of the invention can also consist of combining the locking mechanism according to the invention with a contraction structure that causes a length contraction of the shell wall edge. The contraction structure is embossed onto the inner flank and the skirt flank. It has the advantage that the contraction of the shell wall edge causes it to wedge itself in the groove, thereby providing the shell wall edge with additional support in the groove and on the cover element beyond the locking mechanism.

[0024] A further development of the contraction structure according to the invention can also consist in providing one or more clamping sections distributed over the shell wall edge to create a contracting clamping connection between the shell wall edge and the groove.

[0025] The clamping sections can, for example, include a first, second and third clamping projection extending into the groove to form the contraction structure, with the first clamping projection being located on one side of the groove, for example on the skirt flank, and the second and third clamping projections being located on the other side of the groove, for example on the inner flank of the groove.

[0026] If the contraction structure is designed with clamping projections, it has proven particularly effective within the scope of the invention if the first clamping projection is arranged opposite the second and third clamping projections and is designed such that the shell wall edge between the first clamping projection and the second and third clamping projections can be pressed. The first clamping projection extends into the gap between the second and third clamping projections and forms a clamping gap into which the shell wall edge can be inserted. The clamping projections imprint a wave-like structure on the shell wall edge, which contracts on the shell wall edge and thus clamps / holds the cover element onto the receiving shell.

[0027] Furthermore, a further development can also consist in the packaging arrangement having a first tray wall edge which connects a first and a second corner areas of the receiving tray, wherein the edge edge fold is folded into the receiving tray and runs from the first to the second corner areas, and wherein the edge edge fold has a first locking tab projecting from the tray wall edge, starting from the first corner area, and wherein the edge edge fold has a second locking tab projecting from the tray wall edge, starting from the second corner area, and wherein the edge edge fold has a fixing tab between the two edge tabs which is connected to the tray wall edge over a surface and is wider than the locking tabs.

[0028] According to the invention, the guide joint can be provided with a bend such that this bend pushes the shell wall edge at least outwards. Among other things, the bend causes the locking tab to be erected relative to the shell wall edge and to experience further stiffening at the shell wall edge in relation to the locking projection.

[0029] The latter is particularly pronounced when, according to a preferred embodiment, the shell wall edge and / or the shell wall slopes outwards. Sloping outwards means that the shape of the shell wall edge and / or the shell wall increases the size of the receiving shell upwards.

[0030] According to the invention, the guide joint bend can be advantageously designed such that, in addition to a horizontal bend, the bend also includes a vertical bend, wherein the vertical bend is coordinated with the horizontal bend in such a way that any vertical slippage of the tray wall edge from the guide joint caused by the outward pushing of the tray wall edge is compensated for by the vertical bend of the tray wall edge. This not only improves the stability and load-bearing capacity of the packaging arrangement, but also ensures that the tray wall edge seals dust- and / or liquid-tightly in the groove with the lid element, by the tray wall edge lying uniformly butted up against the groove base with respect to the groove and / or bearing uniformly against the skirt flank forming the guide joint.

[0031] Regardless of this embodiment, it is generally accepted that in the area of ​​the shell wall edge, the shell wall should preferably be designed in such a way that a sealing connection between the shell wall edge and the shell wall edge is possible.

[0032] In addition to the first tray wall edge, according to a further development of the invention, the packaging arrangement can also have a third tray wall edge, which is technically analogous to the first tray wall edge, but which is not located between the first and the second corner area, but between the third and a fourth corner area and which includes a third and fourth locking tab provided between a fixing tab analogous to the first tray wall edge.

[0033] Furthermore, the lid element can comprise a first bead and a third bead, wherein the first bead is associated with the first shell wall edge and the third bead with the third shell wall edge, wherein the first bead has a locking inclusion with locking resistance in the sense of the invention with respect to the first and the third locking tab, and the third bead also has a locking inclusion with locking resistance in the sense of the invention with respect to the third and the fourth locking tab.

[0034] Furthermore, according to the invention, a second and a fourth shell wall edge can also be provided, to which shell wall edges a second and a fourth groove is assigned, wherein the second and the fourth groove include a contraction structure according to the invention as described above. The contraction structure is characterized in that it is able to establish a connection between the second and the fourth shell wall edges, even if these shell wall edges are formed flat without a locking tab and / or fixing tab.

[0035] The contraction structure is suitable not only for shell wall edges without fastening means, such as a snap-in and / or fixing tab, but also for shell wall edges with a snap-in connection with locking resistance according to the invention. With the dual structure consisting of a snap-in connection with locking resistance and a contraction structure, double the safety for the load-bearing capacity between the receiving shell and the cover element can be achieved. This not only provides increased safety but also a higher potential load-bearing capacity.

[0036] Another aspect, not part of the present invention, can also be seen in a receiving tray, in particular made of cardboard and in particular for use in a packaging arrangement, which is characterized in that the receiving tray has a tray wall edge, wherein the tray wall edge includes a locking tab with a resisting edge, wherein the locking tab is formed by folding over an edge edge fold into the receiving tray, wherein the edge edge fold comprises a fixing tab connected to the locking tab and the fixing tab is connected to the tray wall edge in a planar manner, wherein the locking tab projects from the tray wall edge.

[0037] Furthermore, another aspect, also not part of the present invention, can be seen in a lid element, in particular made of plastic, which has a groove for at least partially receiving a shell wall edge with a locking tab and a shell wall edge edge made of cardboard, wherein the groove has a guide groove with a groove base and an inner flank with a locking projection as well as a skirt flank, wherein a groove wall step with a locking step rounding in the skirt flank is formed in the form of a bulge, wherein at a predetermined height of the guide groove the guide groove with the locking projection forms a distance for receiving the locking tab with a locking tab width, which distance moves in a range between a dimensioned maximum distance between the groove base and locking projection and the guide groove and a dimensioned shortest distance between the locking step rounding and the locking projection, such thatthat the locking tab between the locking projection and the guide joint experiences a locking engagement with locking resistance, wherein the height is oriented to the relative flexibility of the skirt flank and / or conversely the relative flexibility of the skirt flank is designed in such a way as to the height of the guide joint, such that with an outward bending of the skirt flank in the area of ​​the corrugated wall step the corrugated wall step is movable at least up to the shell wall edge, wherein the shell wall edge can slide out of the guide joint over the locking step radius.

[0038] Further features, advantages, effects, and details will become apparent from the following description, in which, where appropriate, at least one embodiment is described in detail with reference to one or more drawings. The features described and / or illustrated, either individually or in any meaningful combination, constitute the subject matter, possibly also independently of the claims, and may, in particular, also be the subject matter of one or more separate applications. Identical, similar, and / or functionally equivalent parts are designated with the same reference numerals.

[0039] This schematically illustrates: Fig. 1 a perspective view of a receiving tray according to the invention; Fig. 2 a cut-out for a receiving tray according to Fig. 1 Fig. 3 a perspective view of the lid element according to the invention from below; Fig. 4 a detail of the groove according to the invention from the lid element of Fig. 3 ; Fig. 5a shows in detail the section AA according to Fig. 4 ; Fig. 5b the detail after Fig. 5a with sketched enclosed shell wall edge, wherein the lid element is rotated to fit against the shell wall edge, as shown in the detail. Fig. 5a Fig. 6 shows a side view of a cover element according to the invention.

[0040] Fig. 1 Figure 1 shows a perspective view of a receiving tray 1 according to the invention, made of cardboard or a comparable material, as part of the packaging arrangement according to the invention, which also includes the lid element 2 made of plastic or synthetic material ( Fig. 3 ) includes.

[0041] The receiving shell 1 comprises a shell wall 11, a first shell wall edge 111, a second shell wall edge 112, a third shell wall edge 113, a fourth shell wall edge 114, a first edge edge fold 115 and a second edge edge fold 116.

[0042] The first edge fold 115 has a first protruding locking tab 117 and a second protruding locking tab 118. The first edge fold 115 also includes a first fixing area or a first fixing tab 121.

[0043] The second edge fold 116 has a third protruding tab 119 and a fourth protruding locking tab 120. The second edge fold 116 also includes a second fixing area or a second fixing tab 122.

[0044] The edge edge folds 115, 116 run along the edge edge 127 of the shell wall 11 and are formed at this point by a bending groove 128 (see Figur 2 ) connected to the shell wall 11. The bending groove 128 is embossed on the inside of the receiving shell 1. When the receiving shell 1 is folded, the edge fold(s) 115, 116 are therefore folded into the receiving shell, i.e., into the area in which goods can be transported in the receiving shell 1.

[0045] The first locking tab 117 has a first resistance edge 123. The second locking tab 118 has a second resistance edge 124. The third locking tab 119 has a third resistance edge 125. The fourth locking tab 120 has a fourth resistance edge 126.

[0046] The first fixing tab 121 is fully bonded to the shell wall 11. The same applies to the second fixing tab 122.

[0047] The locking tabs 117, 118, 190, 120 are not glued to the shell wall 11. They are folded over into the receiving shell 1 and are held down by the fixing tabs 121, 122 as part of the edge folds 115, 116, projecting from or towards the shell wall 11.

[0048] At least partial bonding of the locking tabs 117, 118, 190, 120 is conceivable in principle, according to the embodiment shown. Fig. 1 However, this is not provided for, since the locking tabs 117, 118, 119, 120, including the resistance edges 123 to 126 realized with them, obtain their stiffening stability, among other things, by being integrally connected laterally with the fixing tabs 121, 122 as part of the edge edge folds 115, 116, wherein the fixing tabs 121, 122 are fully bonded to the shell wall 11 and this connection between fixing tabs 121, 122 is further reinforced by the fact that the fixing tabs 121, 122 have a surface widening 133, in particular in relation to the locking tabs 117 to 120.

[0049] The width of the locking tabs 134, which is reduced relative to the fixing tabs 121, 122, is selected such that it fits into the locking recess according to the invention. This takes into account, among other things, the stiffening stability to be provided by the fixing tabs 121, 122 with regard to the locking resistance to be achieved, and the geometry of the groove adapted accordingly. The same applies to the length of the locking tabs 117 to 120, which are aligned, among other things, with the locking projection 229.

[0050] The locking tabs are therefore essential parts of the support edge, to which, however, at least as an adjunct, the part of the shell wall edge 111 to 114 can also be assigned, which in the course is opposite the locking projection 229 and can be supported on it within the framework of the locking inclusion.

[0051] Furthermore, the design of the locking tabs 117 to 120 takes into account that they possess sufficient stiffening stability on the one hand, but are also flexible enough to allow for easy sliding insertion of the lid element. Among other things, the hold-down provided by the fixing tabs 121, 122, as well as the buckling stress generated by folding onto the fixing tabs 117 to 120 and the resulting restoring effect, lead to the locking tabs 117 to 120 being resiliently restorable, or rather, being designed to be resiliently restorable to generate the locking resistance. Of course, according to the invention, the hold-down could also be achieved by partially fixing the locking tabs 117 to 120 to the shell wall 11.

[0052] The edge folds 115, 116 also run according to the embodiment shown in Fig. 1 between corner areas 129, 130, 131 and 132. The first edge fold 115 runs between the first corner area 129 and the second corner area 130. The second edge fold 116 runs between the third corner area 131 and the fourth corner area 132.

[0053] The latter is due to the geometry of the receiving tray 1 according to the embodiment as described above. Fig. 1 owed. According to the exemplary embodiment, the receiving tray 1 has Fig. 1 a rectangular basic geometry. The edge folds 115, 116 run essentially parallel on opposite sides. The reason for this is that the locking resistance according to the invention is not to be applied unilaterally, but rather evenly distributed on both sides, i.e., opposite each other, on the receiving shell 1. The locking tabs 117 to 120 are therefore also provided as mirror images of each other on the shell wall 11 and the shell wall edge 111 to 113, respectively.

[0054] The principle of uniform distribution applies not only to rectangular geometries, but also to receiving shells 1 that have a round, oval, or otherwise shaped base geometry. The aim is to achieve a uniform load distribution across the shell wall edge 111, 112, 113, 114 or the shell wall 11.

[0055] The shell wall edges 111 to 114 according to the embodiment shown Fig. 1 The shell wall 11, including the retaining wall, slopes outwards. This increases the stability of the receiving shell 1. It also increases the receiving volume of the receiving shell 1. Furthermore, this has a positive effect on the locking resistance according to the invention. The latter is particularly true when the shell wall 11 runs as parallel as possible to the inner flank 224 of the lid element 2, which not only creates a self-centering effect between the lid element 2 and the receiving shell 1, but also enables a smooth and secure locking action between the locking tabs 117 to 120 and the locking projections 229.

[0056] Fig. 2 shows a cut for a receiving tray according to Fig. 1 The broken lines in Fig. 2 These refer to folding grooves 128, 136, 137. The edge grooves 128, as already described, serve to fold over the edge folds 115, 116. The folding groove 136 serves to fold the adhesive tabs 135. The folding grooves 137 serve to fold the shell wall sections 11-1, 11-2, 11-3, 11-4. The edge folds 115, 116 are located on the shell wall sections 11-1, 11-3. They are integrally connected to the shell wall sections 11-1, 11-3 via the edge grooves 128.

[0057] Furthermore, it is from Fig. 2 corresponding Fig. 1 The following can be seen: The locking tab width 134 of the locking tabs 117 to 120, which form the resistance edges 123 to 126. The free end 135 of the fixing tabs 121, 122 projects opposite the resistance edges 123 to 126. The step formed thereby has a step angle α. According to the embodiment according to Fig. 1 und 2 The step angle Alpha is greater than 90°. Furthermore, as in Fig. 1 with a double arrow the fixing tab width 133 of the fixing tabs 121, 122 in Fig. 2 to recognize. From Fig. 2 Furthermore, the adhesive tabs 135 can be removed, with which the shell wall sections 11-1 to 11-4 are joined together in the folded state. The latter, for example, by gluing.

[0058] Fig. 3 Figure 1 shows a perspective view of the lid element 2 according to the invention from below. The shape of the lid element 2 corresponds to the essentially rectangular shape of the receiving tray 1 and is therefore complementary to it. Naturally, as already mentioned, the following also apply: Fig. 1 Other basic forms are specified within the scope of the invention. The lid element 2 according to the invention preferably consists of a plastic or a comparable material, which is preferably produced in a thermoforming process.

[0059] The embodiment of the cover element 2 according to Fig. 3 includes a groove 22 which encloses or frames a cover 33 along the aforementioned rectangular shape.

[0060] The groove 22 is divided into several sections, namely longitudinal sections 22-2 and 22-4 and transverse sections 22-1 and 22-3. When placed on the receiving shell 1, the longitudinal sections 22-2 and 22-4 run along the shell wall surfaces 11-2 and 11-4. The transverse sections 22-1 and 22-3, on the other hand, run along the shell wall surfaces 11-1 and 11-3 when placed on the receiving shell 1. The transverse sections 22-1 and 22-3 each contain a groove: transverse section 22-1 contains the first groove 227-1, longitudinal section 22-2 contains the second groove 227-2, transverse section 22-3 contains the third groove 227-3, and longitudinal section 22-4 contains the fourth groove 227-4.

[0061] The course of groove 22 or the course of groove base 223 is in Fig. 3 marked with crossbars.

[0062] A contraction structure is provided along the groove 22, which is formed by an inner flank 224 and a skirt flank 225. The contraction structure consists of clamping sections 44-1, 44-2, 44-3, 44-4, 44-5, 44-6, 44-7, 44-8, 44-9, 44-10, 44-11, 44-12, each comprising three clamping projections 441, 442, 443 (see figure). Fig. 4 The contraction structure can, in particular, lead to fewer locking points 226 being required distributed across the shell wall edge 111 to 114 to generate the desired holding effect, to locking points 226 being provided only at specific locations, i.e., only locally across the shell wall edge 111 to 114, or to the holding effect between the cover element 2 and the receiving shell 1 being increased with additional support from the contraction structure. With the locking points 226 according to the invention in combination with the contraction structure according to the invention, the holding effect can be adjusted in a highly flexible manner as required.

[0063] It must be emphasized that the holding effect between lid element 2 and receiving shell 1 naturally also functions without the contraction structure. The latter applies in particular to the sides or areas of the shell wall 11, namely the shell wall sub-surfaces 11-1 and 11-3, which are already held in place by interlocking points 226. For illustrative purposes only, in Fig. 3 Clamping sections 44-1 to 44-12 are shown along the entire groove 22. However, it depends on each individual case whether it is expedient to connect the locking points 226-1 to 226-4 with, and to what extent, the locking points 226 according to the invention.

[0064] Out of Fig. 3 Furthermore, the gripping bottles 228-1, 228-2, 228-3 and 228-4 provided at the locking points 226 must be removed. They serve to improve the gripping of the lid element 2 when opening the packaging arrangement. According to the exemplary embodiment shown, Fig. 3 At all four locking points, gripping bottles 228-1 to 228-4 are provided (226-1 to 226-4). Generally, one of the gripping bottles 228-1 to 228-4 may be sufficient to open the packaging assembly.

[0065] Fig. 4 shows a detail of the groove 22 according to the invention from the cover element 2 of Fig. 3 This essentially refers to the 3rd groove 227-3 in the groove cross section 22-3.

[0066] In this detail, the clamping sections 44-7 and 44-8 and the locking connection points 226-3 and 226-4 become more clearly visible.

[0067] Based on the clamping section 44-8, as with all other clamping sections 44-1 to 44-7, a first clamping lug 441, a second clamping lug 442, and a third clamping lug 443 can be identified. The first two clamping lugs are located on the inner flank 224. The third clamping lug 443 is arranged on the opposite side, i.e., on the skirt flank 225. All three clamping lugs project into the groove 22. The third clamping lug 443 lies between the first clamping lug 441 and the second clamping lug 442. The heights of the clamping lugs 441, 442, and 443 are designed such that the third clamping lug 443 overlaps the other two clamping lugs 441 and 442 horizontally.

[0068] Relative to each other, the clamping lugs 441, 442, 443 form a guide gap in space through which, for example, the shell wall edge 113 can be pushed. When inserted, a wave-like structure is imprinted on the shell wall edge 113, leading to a shortening and consequently a contraction of the shell wall edge 113. This reduces the opening of the receiving shell 1, and as a result, the shell wall edge 111 to 114 is pressed against the inner flank 224 over the circumferential groove 22. This creates a clamping effect between the shell wall edge 111 to 114 and the cover element 2 or the inner flank 224. As already explained above, achieving this clamping effect does not require the following: Fig. 3 As shown, clamping sections 44-1 to 44-12 are provided across the entire rib 22. It may be sufficient, for example, if only one or more clamping sections are provided on the transverse rib sections 22-1, 22-3 or on the longitudinal rib sections 22-2, 22-4.

[0069] From detail to detail Fig. 4 Furthermore, the 3rd indexing point 226-3 and the 4th indexing point 226-4 can be seen. Both indexing points 226-3 and 226-4 are representative of the remaining indexing points 226-1 and 226-2.

[0070] The inner flank 224 and the locking projection 229 can be seen at the locking inlet 226-3. The inner flank 224 in the area of ​​the locking inlet 226-3 includes the first corner inner flank 230-1 and the second corner inner flank 230-2, which run along the corner stiffening projection 230 as part of the inner flank 224. The first corner inner flank 230-1 and the second corner inner flank 230-2 extend higher and longer, respectively, than the other inner flanks 224 that form the groove 22.

[0071] One function of the corner stiffening projection 230 is, among other things, to guide the cover element 2 with respect to the shell wall 11 or the shell wall edge 111 to 114. The corner stiffening projection 230 accomplishes this by guiding the shell wall 11 along the first inner corner flank 230-1 and the second inner corner flank 230-2 so that it can slide into the groove 22. In doing so, the receiving shell 1 and the cover element 2 are also aligned relative to each other, allowing the cover element 2 to be easily placed onto the receiving shell 1.

[0072] The locking projection 229 is arranged on the first inner corner flank 230-1, which faces the third transverse groove section 22-3. The locking projection 229 extends into the groove 22. The locking projection 229 has a wedge-shaped cross-section with a surface rounding that slides off to the left and right. The wedge shape transitions into a rounded plateau 231 that also slides off to the left and right, followed by a locking step 234. The rounded, wedge-shaped design of the locking projection 229 also serves to guide the receiving shell 1 smoothly into the groove 22, as is also the case for the first inner corner flank 230-1 and the second inner corner flank 230-2.

[0073] This is even clearer from the Figuren 5a and 5b stand out. Fig. 5a shows in detail the AA cut Fig. 4 The corner stiffening projection 230 and the rest projection 229 are visible there, the latter running along the upper side of the first inner corner flank 230-1. "Upper side" in this sense means that the wedge structure of the rest projection 229 rises from the flat side 230-3 of the corner stiffening projection 230 along the inner corner flank 230-1 towards the corrugated base 223, then flattens out and transitions into the rest step 234. At the transition from the wedge shape to the plateau 231, the rest projection 229 develops a slight plateau slope, which facilitates the shell wall edge 211 to 214 sliding over the rest projection 229 into the rest step 234. The latter is especially true once the resistance edge 125 has crossed the threshold of the maximum extension of the ratchet projection 234 into the groove 22 and from there slides further into the groove 22 along the plateau slope 231, up to the guide joint 232 of the groove 22, which connects to the groove floor 223 of the groove 22 from below.

[0074] The guide groove 232 has a specific depth or height h, particularly at the locking points 226. The depth / height h of the guide groove 232 is determined, in particular, by the desired locking feature 226 according to the invention and the resulting locking resistance. The strength of the locking feature increases when the height h is increased. The aim here is, in particular, to find a balance between the locking feature and the ability to release the locking feature 226 from the shell wall edge 111 to 114.

[0075] The opening mechanism according to the invention of the shell wall edge 111 to 114 from the ratchet inclusion, which is formed in particular by the guide joint 232, comprises an opening extension 233, which in this case is formed in particular by the bulge 233 in the skirt flank 225.

[0076] The opening extension 233 includes a corrugated wall step, the step surface of which extends outwards into the opening extension 233 at the upper end of the guide joint 232. The step surface slopes upwards towards the steep flank 235 of the skirt flank 225. The steep flank 235 extends almost perpendicularly to the free end 237 of the skirt flank 225. At the free end 237 of the skirt flank 225, the gripping lever 236 extends laterally outwards. This lever, among other things, facilitates pressing the skirt flank 235 outwards in the area of ​​the locking mechanism 226-3, thereby releasing the cover element 2 from the locking mechanism and from the receiving tray 1.

[0077] The release of the lid element 2 from the receiving tray 1 from the locking mechanism is carried out in such a way that the skirt flank 225 in the area of ​​the locking mechanism 226-4 is pressed outwards and upwards from its free end 237.

[0078] This becomes clear from the following: Fig. 5b In Fig. 5b Is the lid element detail according to Fig. 5b The figure is shown rotated. This means that the groove 22 opens downwards towards the shell wall edge 11, which is sketched into the figure and shown there in section and as a cutout of the receiving shell 1.

[0079] In Fig. 5b The direction of movement of the skirt wall flank 225 during the release of the locking mechanism is schematically indicated by the movement arrow 238. The skirt flank 225 is designed to be flexible, particularly in the area of ​​the locking point 226, so that by pushing the skirt flank 225 outwards and upwards, the locking step 234 can be moved at least to the height of the locking step 234. This allows the shell wall edge 113, which is under a certain tension in the guide joint 232, to slide over the locking step radius 239 out of the guide joint 232 and thereby release the locking mechanism. The tension, or locking mechanism tension, can arise, in particular, from the shell wall edge 11 being supported in the edge locking both in the guide joint 232 and on the locking projection 229.The shell wall edge 11 can have at least a slight kink in its course and at the transition from the locking projection 229 to the guide joint 232, which can at least contribute to the locking clamping tension.

[0080] The tensioning stress can be based not only on the support of the shell wall edge 11 at and within the guide joint 232, but also on the fact that the groove 22 or guide joint 232 undergoes at least a slight outward bending along its course. This bending is particularly evident in Fig. 4 at the corrugated base 223, indicated by dashed lines. The corrugation 22 exerts a horizontal pressure on the shell wall edge 11, causing the locking tabs 117 to 120, or their locking / resistance edges 123 to 126, which are bent inwards on the sloping outwards shell wall 11, to lift away from the shell wall 11 or to rise up relative to it, thus further improving the locking connection. This rising up or lifting is primarily due to the fact that the sloping outwards shell wall 11 is more flexible and therefore reacts more strongly to the horizontal pressure than the locking tabs 117 to 120, which are relatively and structurally stiffer due to their bending.The erection is also facilitated by the fact that the locking tabs 117 to 120 are provided at the corner areas 129 to 132 and the adjoining shell wall sections 11-2 and 11-4 counteract the horizontal pressure and thus facilitate the erection.

[0081] As from Fig. 5b As can be seen, the locking mechanism is achieved in particular by the locking tab 119, which in the present embodiment acts as a support edge and is held enclosed between the guide joint 232 and the locking projection 229. With regard to Fig. 5b The misunderstanding should not arise that, as depicted there, the resistance edge 125 must always be in contact with the locking projection 229 and the shell wall edge edge 127 with the corrugated base 223. Rather, the crucial point is that the locking engagement of the locking tab 119 between the locking projection 229 and the guide joint 232 is such that escape from this locking engagement is only possible after overcoming the locking resistance generated by the locking engagement.

[0082] In addition to the guide groove 232 and the locking projection 229, the relative position of the shell wall 11 to the inner flank 224 or to the locking projection 229 also influences the locking mechanism according to the invention. Within the scope of the invention, it is preferred if the inner flank 229 runs substantially parallel (± 10°) to the shell wall 11 (a maximum deviation of ± 10° is preferred). As explained above, this has the advantage and consequence that, in the locking connection and with a suitable projection height of the locking projection 229, the shell wall 11 undergoes a slight bending along the locking projection 229, which places the shell wall edge 111, 113 along and in the guide joint 232 under a certain locking connection tension, which leads to a stabilization of the locking connection and the locking resistance and also, as it were, to an improved sealing effect between the shell wall edge 111, 113 and the guide joint 232.

[0083] It should be emphasized again at this point, however, that the foregoing may be advantageous for the invention, but is certainly not essential. The locking clamping, or more generally, a tension on the shell wall edge 111, 113, can also be achieved, or alternatively, by providing a contraction structure. This contraction structure can be implemented, among other things, by the clamping sections 44-1 to 44-12.

[0084] The clamping section 44-8 can serve as an example in this regard. Fig. 4 The clamping section 44-8, like the other clamping sections, comprises three clamping projections 441, 442, and 443. Clamping projections 441 and 442 are located on the inner flank 224. Clamping projection 443 is opposite clamping projections 441 and 442, specifically positioned between the other two. The clamping projections 441 to 443 form a lateral, downward-opening gap through which the shell wall edge 111 to 114 can be inserted, imprinting a wave-like structure on the shell wall edge 111 to 114 at this point. This wave-like structure, through its clamping action, shortens the shell wall edge 111 to 114.

[0085] Due to the horizontal pressure described above, the shell wall 11 may not only be pushed horizontally outwards laterally, but also vertically downwards. This would mean, however, that the shell wall edge 111 to 114 would no longer fit snugly in the groove 22. Therefore, according to the invention, the groove 22 can be provided not only with a vertical, outward bend to generate a prestress between the shell wall edge 111 to 114 and the inner flank 224, but also with a horizontal downward bend.

[0086] Based on Fig. 6 A vertical bend of this type of groove 22 can be seen. The groove 22, or rather the groove base 223, has a bending depth t. The maximum bending depth t is reached by the groove 22 at the axis of symmetry of the cover element 2. The vertical groove bend also has a bending angle β. Both the bending depth t and the bending angle β are designed to hold the shell wall edge 111 to 114 securely in the groove 22.

[0087] This ensures, according to the invention, that the shell wall edge 111 to 114 does not slip out of the groove 22 or the guide joint 232 due to the generated prestress, or at least prevents the shell wall edge 111 to 114 from no longer sealing properly in the groove 22 to the cover element 2 due to at least slight slippage.

[0088] Furthermore, it should be noted that Fig. 6 In addition to the features of the cover element 2 according to the invention already described, it also exhibits inwardly directed inwardly into the groove 22 along the skirt flank 225. According to the invention, these indentations 444, together with the outwardly directed projections 445, serve to stiffen the skirt flank 225 of the cover element 2, thereby also contributing to the optimization of the locking mechanism. The projections 445 and / or the indentations 444 can also be part of the wave structure described herein, in which suitable clamping projections 441 to 443 are provided on them.

[0089] It is understood that the above detailed description and the drawings, while representing certain exemplary embodiments of the invention, are intended for illustrative purposes only and should not be interpreted as limiting the scope of the invention. Various modifications of the described embodiments are possible without departing from the scope of the following claims. In particular, this description and the figures also reveal features of the exemplary embodiments that are not mentioned in the claims. Such features can also occur in combinations other than those specifically disclosed here.The fact that several such features are mentioned together in the same sentence or in another type of textual context does not justify the conclusion that they can only occur in the specifically disclosed combination; instead, it should generally be assumed that individual features of several such features can be omitted or modified, provided that this does not call into question the functionality of the invention.

[0090] Throughout the entire description and the claims, the term "a" is used as an indefinite article and does not limit the number of parts to a single one. Should "a" mean "only one," this is clear to a person skilled in the art from the context or is unambiguously disclosed by the use of suitable expressions such as "a single one." Bezugszeichenliste

[0091] 1 Receiving shell 11 Shell wall 11-1, 11-2, 11-3, 11-4 Shell wall sections 111, 112, 113, 114 Shell wall edge 111 First shell wall edge 112 Second shell wall edge 113 Third shell wall edge 114 Fourth shell wall edge 115, 116 Edge folds 115 First edge fold 116 Second edge fold 117, 118, 119, 120 Locking tabs, support edge 117 First projecting locking tab 118 Second projecting locking tab 119 Third projecting locking tab 120 Fourth projecting locking tab 121, 122 Fixing areas / Fixing tabs 121 First fixing area / First fixing tab 122 Second Fixing area / 2.Fixing tab 123, 124, 125, 126 Resistance edges 123 First resistance edge 124 Second resistance edge 125 Third resistance edge 126 Fourth resistance edge 127 Shell wall edge edge, edge edge 127 of the shell wall 11 128 Edge edge bending line, edge edge groove, folding grooves 129, 130, 131, 132 Corner areas 129 First corner area 130 Second corner area 131 Third corner area 132 Fourth corner area 133 Surface extensions, fixing tab width 134 Snap-in tab width 135 Adhesive tabs 136 Folding grooves 137 Folding grooves α Step angle 2 Cover element 22 Bead 22-1, 22-2, 22-3, 22-4 Bead sections 22-1, 22-3 Bead transverse sections 22-2, 22-4 Bead longitudinal sections 223 Bead bottom 224 Inner flank 225 Skirt flank 226 Interlocking points, Interlocking point 226-11. Interlocking point, Interlocking point 226-22. Interlocking point, Interlocking point 226-33. Interlocking point, Interlocking point 226-44. Interlocking point, Interlocking point 227-11. Bead 227-22. Bead 227-33. Bead 227-44.Bead 228-1 to 228-4 Gripping bottles 229 Resting projection 230 Corner stiffening projection 230-11. Corner inner flank 230-22. Inner corner flank 230-3 Flat side of corner stiffening projection 230 231 Plateau, plateau inclination 232 Guide joint 233 Opening extension / bulge 234 Corrugated wall step / locking step 235 Steep flank 236 Gripping bottle 237 Free end of skirt flank 225 238 Movement arrow 239 Locking step radius h Height / Depth of guide joint 232 t Bending depth β Bending angle 33 Cover cap 44-1, 44-2, 44-3 to 44-12 Clamping sections 441, 442, 443 Clamping projections 444 Stabilizing shaft bushings of skirt flank 225 445 Bulge.

Claims

1. A packaging arrangement comprising a reception tray (1) with a tray wall (11) made of cardboard that encloses a tray wall-rim area (111 to 114), a lid element (2) made in particular from plastic, with a groove (22) for holding at least part of the tray wall-rim area (111 to 114), wherein the tray wall-rim area (111) includes a rim-edge (127), a rim-edge fold (115, 116) and a locking latch (117 to 120) with a resistance edge (123 to 126), thereby forming in functional connection a support edge (117 to 120), whereby the locking latch (117) is formed by a folding of the rim-edge fold (115, 116) into the reception tray (1), wherein the groove (22) has a groove base (223), a guide groove (232) and an inner flank (224) extending in the reception tray (1) comprising a detent projection (229), wherein the resistance edge (123 to 126) is located opposite the detent projection (229) and wherein the groove (22) comprises an apron flank (225) extending along the outside of the tray wall-rim area (111), wherein a groove wall shoulder (234) with a wall shoulder rounding (239) in the form of a bulge (233) is formed in the apron flank (225), wherein the guide groove (232) comprises a determined height (h) and the support edge (117 to 120) comprises a width (134), which width (134) is variable in a range between a to be assessed widest distance between the detent projection (229) and the guide groove (232) and a to be assessed shortest distance between the detent projection (229) and the guide groove (232) such that the support edge (117 to 120) experiences a detent inclusion with detent resistance in-between the detent projection (229) and the guide groove (232), wherein the height (h) is construed in alignment with the relative flexibility of the apron flank (225), and / or conversely the relative flexibility of the apron flank (225) is construed in alignment with the height (h) of the guide groove (232) such that, when the apron flank (225) in the area of the groove wall shoulder (234) is bent outwards, groove wall shoulder (234) is movable at least up to the tray wall-rim (127), wherein the tray wall-rim area (113) can slide out of the guide groove (232) over the wall shoulder rounding (239).

2. Packaging arrangement according to Claim 1, wherein the dimension of the shortest distance is determined, whether, in case of said distance, the tray wall-rim area (111 to 114) until the detent inclusion is reached remains guided in the guide groove (232).

3. Packaging arrangement according to Claim 1 or 2, wherein die tray wall (11) extends along the inner flank (224).

4. Packaging arrangement according to Claim 1, wherein the folding takes place along a rim-edge fold line (128).

5. Packaging arrangement according to Claim 1, wherein the rim-edge fold (115, 116) comprises a fixing flap (121, 122) that is connected to the locking latch (117 to 120), and that the fixing flap (121, 122) is connected flat with the tray wall (11).

6. Packaging arrangement according to Claim 5, wherein die fixing flap (121, 122) is widened in width relative to the locking latch (117 to 120).

7. Packaging arrangement according to one or more of Claims 4 to 6, wherein the rim-edge fold line (128) has greater bending stiffness relative to the locking latch (117 to 120) than relative to the fixing flap (121, 122).

8. Packaging arrangement according to one or more of the preceding claims, wherein the groove (22) comprises an opening enlargement (233) at least in the area of the detent projection (229) and adjoining the guide groove (232) in terms of height.

9. Packaging arrangement according to Claim 8, wherein the opening enlargement (233) includes a groove wall shoulder (238) passing over from the guide groove (232).

10. Packaging arrangement according to Claim 1, wherein the apron flank (225) comprises a free end (237), on which a gripping notch (236) is provided, at least in the area of the detent projection (229).

11. Packaging arrangement according to Claim 10, wherein the gripping notch (236) extends vertically outwards.

12. Packaging arrangement according to one or more of the preceding claims, wherein, within the groove (22) the inner flank (224) and the apron flank (225) form a contracting structure for length contraction of at least parts of the tray wall-rim area (111 to 114).

13. Packaging arrangement according to Claim 12, wherein the contracting structure comprises distributed on the inner-sides of the groove (22) one or more clamping sections (44-1 to 44-12) in order to create a clamping connection between the tray wall-rim area (111 to 114) and the groove (22).

14. Packaging arrangement according to Claim 13, wherein the clamping section (44-1 to 44-12) comprises a first, second and third clamping projection (441, 442, 443) that protrudes into the groove, wherein the first clamping projection (443) is arranged on one side of the groove (22), and the second and third clamping projections (441, 442) are arranged on the other side of the groove (22).

15. Packaging arrangement according to Claim 14, wherein the first clamping projection (443) is arranged opposite and between the second and third clamping projections (441, 442), and is constructed in such that the tray wall-rim area (111 to 114) can be pushed between the first clamping projection (443) and the second and third clamping projections (441, 442).

16. Packaging arrangement according to one or more of the preceding claims, wherein the packaging arrangement includes the tray wall-rim area (111), which connects a first and a second corner region (129, 130) of the reception tray (1), wherein the rim-edge fold (115) being folded into the reception tray (1) extends from the first to the second corner region (129, 130), wherein the rim-edge fold (115) comprises a first locking latch (117) projecting away from the tray wall (11) starting from the first corner region (129), wherein the rim-edge fold (115) comprises a second locking latch (118) projecting away from the tray wall (11) starting from the second corner area (130), and wherein the rim-edge fold (115) comprises a fixing flap (121) between the two locking latches (117, 118) that is flatly connected with the tray wall (11) and widens in relation to the locking latches (117, 118).

17. Packaging arrangement according to one or more of the preceding claims, wherein the guide groove (232) comprises at least one the wall-rim area (111 to 114) outwardly pressing bending.

18. Packaging arrangement according to one or more of the preceding claims, wherein the tray wall-rim area (111 to 114) is inclined outwardly.

19. Packaging arrangement according to Claim 17, wherein the bending includes a horizontal bending and a vertical bending, wherein the vertical bending is adapted up to the horizontal bending such that a slip-out of the tray wall-rim area out of the guide groove (232) caused by an outward pressing of the tray wall-rim area (111 to 114) is compensate-able by the vertical bending of the guide groove (232).