MXPA06007009A - A blank for a container and a container made from said blank - Google Patents

Abstract

A container comprises a container wall (3) and a lower bottom member which is surrounded by the container wall and connected to said wall in fluid tight fashion. A discharge opening, which is optionally closeable by cover member, is surrounded by the container wall at a location opposite to the bottom member. A corresponding blank (1) for such a container, especially the container wall, comprises an upper (4) and lower (5) peripheral edge and first and second connection edges (6, 7) laterally connecting said peripheral edges, each of said connection edges extending along overlap regions (8, 9) which are interconnectable for shaping the container. To improve such a blank or such a container in that its manufacture is simplified and less expensive, and that an inspection opening is made more stable and has a greater load bearing capacity at the same time, at least one peripheral opening (10) is formed in at least each of the overlap regions which overlap one another at least in part upon connection of the overlap regions formed that inspection opening. A container wall of the container is made of such a blank.

Description

WO 2005/058714 I f I l I l I l I l I l f you ÍN fl f IIL before the expiration of the time limit for amending the For two-letter codes and other abbreviations, refer to the "Guid-claims and to be republished in the event of receipt of Anee Notes on Codes and Abbrevialions" ' appearing at thebegin-amendmenls no ofeach regular issue of the PCT Gazette.

A PREFORM FOR A CONTENEDORY A CONTAINER ELABORATED FROM SUCH PREFORMA DESCRIPTIVE MEMORY The present invention relates to a preform for a container, particularly a container wall, comprising a peripheral edge top and bottom and first and second connecting edges connecting laterally peripheral edges, each of said connection edges extending to overlapping regions that interconnect to form the container. The present invention also relates to a container that can be made from said preform, said container provided, in addition to the wall of the container, with at least one lower element below which is surrounded by the wall of the container and connected to the wall in a hermetic way to fluid. Opposite the lower element, a discharge opening, which is optionally closed by a cover element, is surrounded by the wall of the container. It is already known in practice that said preform or container made thereof is equipped on the wall of the container with at least one inspection opening which can be used to observe from the outside of the container inside the container. This helps, for example, to verify the filling or filling level of the container and, optionally, also to verify the quality of the contents of the container. The contents of the container of this kind may for example be food that can be consumed through a top discharge opening of the container, for instance beverage, yogurt, ice cream, food items pourable or loose or the like. To make said inspection opening in the preform, said opening must be made by means of a separate tool in the corresponding preform. For example, when produced by drilling, not only the corresponding perforated portion of the preform must be removed, but normally an ejector means must also be provided whereby a detachment of the blank from the corresponding tool is made possible after the drilling operation. The perforated is usually removed by suction, or the like. The production method for the preform and the corresponding apparatus in this way are relatively complicated and expensive. Furthermore, it should be noted that the preform or the wall of the container made from the preform have in part only a low stability or a dimensional rigidity in the area of the inspection opening, depending on the material used for the preform. This can cause the spill to arise in the area of the inspection opening, which is caused, for example, during handling of the container and by corresponding pressure applied to the container in the area of the inspection opening.

Therefore, the object of the present invention is to improve a preform or a container so that its manufacture is simplified and less expensive and that the inspection opening becomes more stable and has a greater load bearing capacity at the same time . This objective is achieved by the features of claim 1 and claim 12, respectively. Peripheral edges in at least each of the regions of overlap along the first and second connecting edges of the preform may occur during a cut corresponding edge without the need for separate tools for making corresponding openings in the preform was of overlapping regions. Since the edge trimming is carried out at any speed during the manufacture of the preform, said manufacturing step can simultaneously be used to elaborate the corresponding peripheral openings. Due to the arrangement of the peripheral openings in the overlap region, the corresponding parts of the preform that have been removed to make the peripheral openings can be discarded together with the waste parts that arise during edge trimming. Separate removal of the waste parts formed outside the overlap regions is no longer necessary. There is likewise no need for corresponding ejector means to detach the preform, for example from a drilling tool for a standard inspection opening.

Since a peripheral opening is formed in at least each of the overlap regions, the inspection opening composed thereof after connection of the overlap regions is also disposed in the overlap region. Since in said place the thickness of the wall of the container is essentially twice as large as the wall of the remaining container due to the connection of the two regions of overlap, the inspection opening is arranged in a reinforced area of the container and of this Mode is more stable and can be subjected to higher loads without loss in fluid tight capacity. In addition, detachment of the corresponding tool preform during edge trimming can be facilitated when the peripheral opening is designed as a peripheral recess which is open to the outside towards the connecting edge. Said peripheral voids will overlap at least in part during the formation of the container with formation of the corresponding inspection opening. To obtain a sufficiently large inspection opening with minimum stresses, it can be considered advantageous when the peripheral openings completely overlap to form the corresponding inspection opening and, optionally, also have the same shape. Up to this point said peripheral openings can, for example, be arranged at the same distance from the upper and / or lower peripheral edge.

The manufacture of the peripheral openings and the detachment of the preform from the corresponding tools can also be facilitated when the peripheral openings do not have sharp edges, but are round. It is possible for a corresponding peripheral opening to extend beyond the overlap region in the preform. Due to the part of the peripheral opening arranged in the overlap region, the last stability of the inspection opening is improved at least in part. However, to improve the stability as much as possible, the peripheral opening can be restricted to the respective overlap region and thus not extend into the remaining preform. It is possible to provide a plurality of peripheral openings along a region of overlap where, for example, the distance of the peripheral peripheral openings is changed from the lower peripheral edge to the upper peripheral edge. It is possible in this connection that the distances of the peripheral openings decrease toward the lower peripheral edge. In this way, it can be verified in a better way how many contents are still in the container. It can also be useful in terms of manufacture when the peripheral openings along a region of overlap equally separate from one another. As a rule, such an equally separate provision is sufficient to verify the contents in the container. It is possible that both the peripheral openings along an overlap region and the peripheral openings in the two overlap regions have different cross sections when compared to each other. For example, a relatively small peripheral opening should be formed near the upper peripheral edge that is sufficient to verify a level of contents within the container. The corresponding peripheral opening can be formed in the area of the lower peripheral edge with a greater length in the longitudinal extension of the overlap extension which is able to verify here in a better shape if the container is empty. In a simple embodiment, however, it is also possible that all peripheral openings have the same cross sections. The corresponding peripheral openings can terminate at a distance from an internal overlap line of the overlap region. This ensures that there is also a suitable connecting surface of the overlapping regions around or at least in part around the peripheral opening. To get, however, inspection openings that are sufficiently large may be useful when the peripheral openings extend to the internal overlap line of the overlap region. This can be considered as an advantage in cases where the overlapping regions have a smaller width only and the suitably large inspection openings should no longer be formed. The peripheral openings may be designed so that the corresponding overlap line substantially touches the peripheral openings. However, it is also possible for the peripheral openings to extend with their inner edge facing the lap line at least partly along the lap line. The inspection openings in the container made from the preform should be closed in a fluid-tight manner by a film or coating. To facilitate the application of a film or coating, it is possible that the peripheral opening is surrounded at least in part by a coating area. Said coating area serves, in particular, to hold the film or to apply the coating out of the peripheral openings or inspection openings, resulting in an improved fluid tight capacity. Said coating areas may extend both in the corresponding overlap regions and beyond said regions in the remaining preform. Very different cross sections are possible for the peripheral openings, resulting in very different cross sections in the inspection openings. The cross sections can, for example, be designed so as to obtain a star shape, similar to a cross or also other cross sections of the inspection openings which, in addition to the inspection of the interior of the container, can have a positive effect on the optical appearance of the container under aesthetic aspects. Simple cross sections in this connection are circular or oval cross sections. If the inspection opening is to extend over the largest length in the longitudinal direction of the overlap regions, slotted cross sections for the inspection opening and corresponding cross sections for the peripheral openings are also possible. A corresponding width of the cross section can also vary in the longitudinal direction of the overlap region. During the production of the container, the corresponding preform is deformed so that the overlapping regions contact each other and then interconnect to form at least the wall of the container. Said connection can be established in a standard manner by means of an adhesive or also by fusing the usually existing plastic coating of the preform material. Said preform materials are, for example, a corresponding plastic material, which is particularly compatible with food, or also paper or paperboard. The coating of said material is also a food-compatible plastic material which is particularly liquid-tight and optionally also gas-tight. It is possible that the material of the preform or the corresponding coating is also an interleaving material consisting of several layers of different materials. The corresponding lower element of the container can be made from the same material. The container can also be optionally closed by means of a cover element opposite the lower element, the corresponding discharge opening placed in said place. There are several possibilities for connecting the wall of the container and the lower element, for example by flexing the lower peripheral edge of the preform of the wall of the container towards the interior of the container and forming a receiving channel for a peripheral flange of the lower element. Said peripheral flange projects in the direction of the receiving channel and is inserted into said channel and subsequently connected in a fluid-tight manner to the wall of the container. The corresponding upper peripheral edge of the preform can for example be flanged or pressed flat to form a feed roller or other opening edge. The feed roll or a differently formed opening edge can also serve here to hold the cover element. As previously explained, the inspection opening is sealed in a fluid-tight manner by a particularly transparent film or coating. In order to avoid the fluid-tight seal of each inspection opening individually, the corresponding film or coating can extend along the overlap region and thus seal all the inspection openings at the same time, the openings are mounted in the lower and / or outer in the container. As with the regions of overlap, it should be noted that they have a connecting edge located inside the container after the wall of the container has been formed. It can be considered here as an advantage when the film or coating for the fluid-tight seal of the inspection openings covers at least the connecting edge disposed inside the container. The connecting edge can also be sealed separately, for example, during drilling or in a step subsequent to said procedure. In addition, it is possible for the film or coating not only to serve as the fluid-tight seal of the inspection openings, but also to be used simultaneously for connection of the overlap regions. This, for example, can be performed on the film or coating extending from the inside of the container around the connecting edge disposed inside the container to at least the outer connection edge. It is also possible for the externally located connecting edge to be additionally sealed by the film or coating. The film or coating can also only be arranged between the interconnected overlap regions. To ensure that an inspection of the container is possible through the inspection opening, it is clear that the film or coating is formed from a transparent or at least translucent material. It is also possible to provide the film or coating at least in places with an impression and / or coloration. Said printing for example is a mark that marks the desired filling level of the container. In this way, it can be easily verified if the container has been properly filled. Additional impressions are possible which have advertising purposes. Due to printing and / or coloring, positive aesthetic design features are also provided. It is also possible for the film or coating to change its color when the contents of the container are heated or cooled or are no longer in contact with the film or coating in the area of the corresponding inspection opening. The coloration can also change in response to the temperature of the contents of the container, so that it can, for example, be detected that or whether the contents of the container have been adequately heated. To protect the inspection openings at least until the use of the container, these can be covered externally in the container by a cover similar to a wing in particular. This protects the inspection openings during the corresponding filling and handling of the container, during the last transportation or classification of the containers. Only when the container is used in accordance with its destination is that the cover can be opened or removed optionally. In case the cover is given a design similar to a wing, it can also be an advantage that can be closed again after it has been opened. This can, for example, because the cover is self-adhesive and / or removable. Corresponding self-adhesion is sufficient in the wing-like cover, for example at the folded end of the cover. When the cover is removed, it can remain removed on one side or can be optionally applied again in case of self-adhesion. When a corresponding preform or container is made, attention must be paid in accordance with the method that the preform is drilled normally, it is cut out or otherwise produced from a corresponding master piece to form the upper and lower peripheral edges and the first and second connecting edges laterally connecting them. The preform produced in this way is then subjected to edge trimming particularly in the area of the connecting edges. A corresponding edge trimming can optionally be carried out in the area of the upper and lower peripheral edges as well. During edge trimming the corresponding periphery openings then occur at least in the overlap region or the overlap regions. Said preform that is provided with peripheral openings and is trimmed along the edges then flexes to form the wall of the container and connects in a fluid-tight manner in the area in the overlap regions. At the same time together with the connection, the re-inspection openings are produced from the peripheral openings of both regions of overlap which overlap at least in part. It should be noted that the edge trimming and the production of the peripheral openings can be carried out at the same time or one after the other. An additional step of the process for making the corresponding container is the application of a film or coating in and / or between the interconnected overlapping regions for the fluid-tight sealing of the produced inspection openings. The corresponding film or coating can, for example, be applied before the connection of the overlapping regions to seal, for example, also one or both peripheral edges in a fluid-tight manner or optionally also serve as an adhesive during the connection of the regions of overlap. Useful embodiments of the invention will now be explained in more detail with reference to the figures appended to the drawings in which: Figure 1 is a top view in a first embodiment of a preform according to the invention. Figure 2 is a top view in a second embodiment of a preform according to the invention; Figure 3 is a top view in a third embodiment of a preform according to the invention. Figure 4 is a top view in a fourth embodiment of a preform according to the invention; Figure 5 is a top view in a fifth embodiment of a preform according to the invention; Figure 6 is a top view in a sixth embodiment of a preform according to the invention; Figure 7 is a top view in a seventh embodiment of a preform according to the invention; Figure 8 is a side view of an elaborate container of a preform according to Figure 5, in a cut-off state; and Figure 9 is a top view in a removable cover for inspection openings.

Figures 1 to 7 show seven different embodiments of a preform 1 according to the invention, similar parts of the preform are marked with similar reference numbers and are only partially explained with reference to a figure. The preform 1 according to FIG. 1 serves to form a wall of the container 3 of a container 2; see also figure 8. The preform is surrounded by an upper curved peripheral edge 4 and a lower curved peripheral edge 5 and first and second connecting edges 6, 7, laterally connecting them. The connecting edges 6, 7 extend in a straight manner and terminate in overlapping regions 8, 9. These are in contact with each other to form the container (see Figure 8) and are interconnected in a fluid-tight manner. The regions of overlap 8, 9 have arranged in the same peripheral openings 10 which are formed as peripheral holes 16 that open in the direction of the first and second connection edges 6, 7; see also the subsequent figures. The overlapping regions 8, 9 are defined by overlapping lines 19, 20 at a distance from the respective connecting edge 6, 7. The peripheral openings 10 extend with their inner edge 21 upwards to said overlap lines 19, 20 Said inner edge 21 may extend in part along the corresponding overlap line 19, 20; see also figure 6 or 7.

The peripheral openings 10 in the respective overlap region 8, 9 are arranged with the same cross section and the same distance from the lower peripheral edge 5. When the overlap regions 8, 9 are connected, the peripheral openings 10 will overlap to form a corresponding inspection opening; see reference numerals 13, 14 and 15 in figure 8. In the embodiment according to figure 1, only one peripheral opening 10 is arranged in each of the overlapping regions 8, 9 so that only one inspection opening It is formed when the wall of the container 3 is formed. Additional regions, which are marked by interrupted lines extending in parallel with the corresponding peripheral edges, extend along the upper and lower peripheral edges 4, 5. The corresponding region along the lower peripheral edge 5 serves to form the receiving channel 26 (see FIG. 8), and the region along the upper peripheral edge 4 serves to form a feed roller 27 (see FIG. 8 again). The material of the corresponding preform 1 is normally paper or cardboard coated with a plastic film, the material of the plastic film chosen so that the film is at least fluid-tight or optionally gas-tight. In addition, the film can also serve to connect the regions of overlap during the formation of the wall of the container 3 because the film is fused by the action of heat and will be connected to the overlapping regions in a fluid-tight manner after solidification . The embodiment according to Figure 2 differs from the embodiment according to Figure 1 by means of an additional peripheral opening 11 in each of the overlapping regions 8, 9. This applies by analogy to the third embodiment in accordance with the figure 3; in this embodiment the corresponding peripheral openings 12 in each of the overlapping regions 8, 9 are arranged close to the upper peripheral edge 4 in comparison with the embodiment according to Figure 2. Finally, Figure 4 shows a fourth embodiment in the which after peripheral openings 10, 11, 12 are arranged in each of the regions of overlap 8, 9, the corresponding peripheral openings separated from each other at the same distance and provided with the same cross section. In the embodiments of Figures 2 and 3, two inspection openings are each obtained in the wall of the container 3 and three inspection openings in the embodiment according to Figure 4. Figures 5 and 6 show additional modalities showing by means of example that the peripheral openings 10 and 12 are each separated at the same distance 17, 18 from the upper or lower peripheral edge 4, 5. The corresponding peripheral openings have a semicircular cross section, which extends in the direction of the respective connecting edges 6, 7. In this example, the respective overlap line 19, 20 is substantially tangential to the respective peripheral opening 10, 11, 12. In the embodiment according to Figure 6, the corresponding peripheral openings 10, 11, 12 each extend with their inner edge 21 along part of the related overlap line 19, 20, resulting in an elongated oval cross section in the formed inspection openings. The inspection openings 13, 14, 15 in accordance with Figure 8 are substantially formed by the peripheral openings 10, 11, 12 in accordance with Figure 5, said inspection openings having a circular cross-section. Of course, it is also possible that in each of the embodiments a greater number of peripheral openings are formed or not distributed in the longitudinal direction of the overlapping regions in a uniform manner, but in different forms. For example, the peripheral openings may be arranged in the vicinity of the lower peripheral edge 5 at a shorter distance or also with a distance decreasing from the upper peripheral edge to the lower peripheral edge. Further variations in both cross sections of the corresponding peripheral openings and in their distribution and arrangement of the overlap regions are evident. It is also possible for the peripheral openings to extend over the respective overlap region or overlap line 19, 20 in the remaining preform 1.

Another possibility with respect to the peripheral openings is that they are provided in the respective overlap region or also along an overlap region with different cross sections that only partially overlap in part after connecting the overlap regions to form corresponding inspection openings. In the embodiment according to Figure 7, only one peripheral opening 10 is arranged in each of the overlapping regions 8, 9. Said opening 10 extends over a large part of the length of each overlap region 8, 9 between the upper and lower peripheral edge 4, 5. This produces a substantially grooved inspection opening in the finished container. In the embodiment according to Figure 7, a coating region 22, 23 is further shown near each peripheral opening 10, said region surrounding the opening in the area of the corresponding preform 1. The corresponding coating regions 22, 23 can also be formed for the peripheral openings 10, 11, 12 of the preceding embodiments. In the finished container 2, see figure 8, and in the wall of the finished container 3, the coating regions 22, 23 serve to provide or apply a corresponding film or coating 28; see figure 8 again. It is also true for the embodiment shown in Figure 7 that the peripheral openings 10 arranged in the respective overlap regions 8, 9 do not need to be similar, but may also, for example, extend over the overlap line 19, 20 in the preform The remaining or also may be disposed in an out-of-phase manner relative to one another in the longitudinal direction of the overlapping regions 8, 9. However, the installation or application of the film or coating 28 is normally facilitated when the corresponding peripheral openings are provided. , 11, 12 become similar or overlap each other completely. Figure 8 shows a side view of a container 2 that is cut through in the middle part and having a wall of the container 13 made of a preform according to figure 5. The corresponding overlap regions 8, 9 are arranged in a way to overlap and interconnect in a fluid-tight manner. With a superposed arrangement of the overlapping regions 8, 9, the corresponding peripheral openings 10, 11, 12 also overlap, thus forming the inspection openings, 13, 14 15. At the lower end, the container 2 comprises a lower element 24. Said lower element has a peripheral flange projecting downwards 32 surrounding it, which is inserted in a receiving channel 25 of the wall of the container 3. The receiving channel 25 is formed by flexing the lower peripheral edge 5 upwards , and upon insertion of the corresponding peripheral flange 32 of the lower element 24, said element is connected to the receiving channel 26 in a fluid-tight manner.

At its upper end, the container 2 has a discharge opening 25 which is surrounded by a feed roller 27 or a similar edge. The feed roller 27 is formed by flanging the upper peripheral edge 4. Inside the container 29 and / or on its outer part, a film or coating 28 is applied along the overlapping regions 8, 9 for a seal fluid-tight of the inspection openings 13, 14 15. It is possible to use a film or coating 28 to seal all the inspection openings 13, 14, 15. In the area of the inspection opening 13, the film / coating 28 it comprises a level mark as an impression 30 and can optionally be colored. The film or coating 28 may also extend from the interior of the container 29 around the first inner connection edge 6 to the outside of the container 2 and especially to the second outer connection edge 7 and also seal it optionally in an airtight manner to fluid. As can be seen particularly in figure 8, the inspection openings 13, 14, 15 only extend in the interconnected overlap regions 8, 9 so that they can be surrounded by a double layer material of the preform 1, whereby the stability in the area of the inspection openings. On the outside in the container 2, a cover similar to a wing 31 can additionally be arranged to cover the inspection openings 13, 14, 15. This cover is shown in a rectangular configuration in figure 9. The cover 31 can be attached to along one of its longitudinal edges to the container 2, while the other longitudinal edge can be folded from the container to expose the inspection openings 13, 14, 15 and to inspect the interior of the container 29. In the area of the folded longitudinal edge, it is it is possible to fasten said edge in a removable one to the outside of the container. As a result, the cover can be closed again. It is also possible to fasten the folded longitudinal edge of the cover 31 by means of a single-use connection to the outside of the container at the beginning, so that it can be detected if the wing has already been opened before. The cover 31 can also be designed as a removable and / or self-adhesive strip cover or substantially similar to a strip, see Figure 9. The containers according to the invention, and the corresponding preform, respectively, are characterized by easy production. of the corresponding inspection openings and arrangement of the inspection openings in the overlapping regions. This special arrangement produces improved stability in the area of the inspection openings. In addition, there is no waste separately during the production of the inspection openings since they can be produced together with the trimming of the corresponding edges and can be removed with the resulting waste. Especially thanks to the configuration of the peripheral openings as open peripheral openings, no measures are needed, for example ejector means or the like, which require a separation of the preform from the respective tool after the manufacture of the openings.

Claims (21)

NOVELTY OF THE INVENTION CLAIMS

1. - A preform (1) for a container (2) especially a wall of the container (3), comprising an upper peripheral edge and a lower one (4, 5) and first and second connecting edges (6, 7) that connect laterally said peripheral edges, each connecting edge extending along overlapping regions (8, 9) that interconnect to form the container (2), characterized in that at least one peripheral opening (10, 11, 12) is formed in at least each of the overlapping regions (8, 9), said peripheral openings (10, 11, 12) overlapping each other at least in part after the connection of the overlapping regions (8, 9) to form an inspection opening (13, 14, 15).

2. The preform according to claim 1, further characterized in that said peripheral opening (10, 11, 12) is designed as a peripheral gap (16) that opens outward toward the connection edge (6, 7) .

3. The preform according to claim 1 or 2, further characterized in that the peripheral openings (10, 11, 12) are arranged at the same distance from the upper and lower peripheral edge (4, 5).

4. - The preform according to any of the preceding claims, further characterized in that the peripheral opening (10, 11, 12) is defined in the respective overlap region (8, 9).

5. The preform according to any of the preceding claims, further characterized in that the peripheral openings (10, 11, 12) are equally separated from each other along the region of overlap (8, 9).

6. The preform according to any of the preceding claims, further characterized in that the peripheral openings (10, 11, 12) have the same cross section. .

7. The preform according to any of the preceding claims, further characterized in that the peripheral openings (10, 11, 12) extend to an internal overlap line (19, 20) of the overlap region (8, 9) .

8. The preform according to any of the preceding claims, further characterized in that the peripheral opening (10, 11, 12) extends with its inner edge (21) at least partly along the line of overlap (19). , twenty).

9. The preform according to any of the preceding claims, further characterized in that the peripheral opening (10, 11, 12) at least is surrounded in part by a coating area (22, 23).

10. - The preform according to any of the preceding claims, further characterized in that the inspection opening (13, 14, 15) which is composed of the peripheral openings (10, 11, 12) is substantially circular or oval in cross section.

11.- The preform in accordance with! Any one of the preceding claims, further characterized in that the inspection opening (13, 14, 15) which is composed of the peripheral openings (10, 11, 12) is substantially grooved in cross section.

12. A container (2) comprising a wall of the container (3) and a lower element below (24) that is surrounded by the wall of the container and that is connected to said wall in a fluid-tight mode, an opening discharge (25), which is optionally closed by a cover element, which is surrounded by the wall of the container in a location opposite the lower element (24), characterized in that the wall of the container (3) is made of a preform ( 1) according to any of the preceding claims.

13. The container according to claim 12, further characterized in that the lower peripheral edge of the wall of the container (3) is flexed towards the interior of the container (29) and a receiving channel (26) is formed for a peripheral flange (32) the lower element (24)

14. The container according to claim 12 or 13, further characterized in that the upper peripheral edge (4) of the wall of the container (3) is flanged and / or pressed flat to form a feed roller (27) or similar.

15. The container according to any of claims 12 to 14, further characterized in that the inspection opening (13, 14, 15) is sealed in a fluid-tight manner by a particularly transparent film (28) or coating.

16. The container according to any of claims 12 to 15, further characterized in that the film (28) - or coating extends along the overlap region (8, 9).

17. The container according to any of claims 12 to 16, further characterized in that the film (28) or coating is covered by at least one connection edge (6) disposed inside the container (29).

18. The container according to any of claims 12 to 17, further characterized in that the film (28) or coating extends from the interior of the container (29) around the connection edge (6) arranged in the inner container up to at least the connection edge (7) located on the outside.

19. The container according to any of claims 12 to 18, further characterized in that the film (28) or coating is provided at least in places with a print (20) and / or coloration.

20. - The container according to any of the preceding claims 12 to 19, further characterized in that the inspection opening (13, 14, 15) can be covered by a cover similar to a wing (31) on the outside of the container (2).

21. The container according to any of the preceding claims 12 to 20, further characterized in that the cover (31) is self-adhesive and / or removable.