Container Having Sidewall with Ring Shaped Shaping

Abstract

The present invention relates to a process for the production of a cup having a bottom and a sidewall attached to the bottom, wherein the sidewall preferably comprises a rolled rim at its upper edge opposite to the bottom, wherein the sidewall comprises a single layer or a plurality of layers, wherein at least one of the layers is produced from a paper material, carton, plastic, PLA, a renewable and/or a biodegradable resource and or any other comparable material, where-in at least one shaping is shaped into at least one of the layers of the sidewall, wherein the shaping is at least partially ring-shaped, wherein the shaping extends at least partially over the perimeter of the sidewall, wherein the shaping is inwardly or outwardly directed, wherein the shapings are compressed in height such that an edge of each shaping touches an opposite segment of the shaping and/or that both edges of each shaping touch each other and are joined together, and a cup produced by this process.

Claims

1. Process for the production of a container having a bottom and a sidewall attached to the bottom, the process comprising: forming a sidewall from flat paper or carton material, said sidewall having a first end and a second end wherein the first end is attached to the bottom and the sidewall has a rolled rim at the second end; forming at least one shaping into the sidewall, the at least one shaping extending at least partially over the perimeter of the sidewall and wherein the at least one shaping is inwardly or outwardly directed; and compressing the shaping in its height.

2. Process according to claim 1, characterized in, that the compressing step generates a void volume defined by the shaping.

3. Process according to claim 1, characterized in, that the compressing step generates a flat profile of the shaping.

4. Process according to claim 1, characterized in, that the shaping is shaped such that a rib is formed during the compressing step.

5. Process for the production of a container having a bottom and at least one sidewall attached to the bottom, the process comprising: forming at least one sidewall from a material, said sidewall having a first end and a second end wherein the first end is attached to the bottom and the sidewall has a rolled rim at the second end, and wherein the material is selected from a group consisting of paper, carton, plastic, PLA, and a renewable and/or biodegradable resource; forming at least one shaping into the at least one sidewall, the at least one shaping extending at least partially over the perimeter of the sidewall and wherein the at least one shaping is inwardly or outwardly directed; heating the shaping; and compressing the shaping in its height.

6. Process according to claim 1, characterized in, that the shaping includes two opposing edges and the edges of the shaping are joined together by heat bonding, cold bonding, or hot sealing.

7. Process according to claim 1 further comprising applying a coating at least in a region of the sidewall proximate two opposing edges of the shaping, wherein the coating comprises a heat-sealable material to join the edges during the compressing step.

8. Process according to claim 1, characterized in, that the compressing step results in a shaping wherein two opposing edges of the shaping are closely spaced and substantially form a flat inside surface of the sidewall.

9. Container comprising a bottom and a sidewall attached to the bottom, wherein the sidewall comprises a rolled rim at an upper edge of the sidewall opposite to the bottom, wherein the container comprises a single sidewall, wherein the sidewall is produced from paper or carton material, characterized in that at least one shaping is shaped into the sidewall, wherein the at least one shaping is at least partially ring-shaped, wherein the at least one shaping extends at least partially over the perimeter of the sidewall, wherein the at least one shaping is inwardly or outwardly directed, wherein the at least one shaping is compressed in height.

10. Container according to claim 9, characterized in, that the compressed shaping forms a rib directed inwardly and/or outwardly, wherein the rib comprises a void volume or wherein the rib forms a flat surface.

11. Container according to claim 9, characterized in, that the compressed shaping is an insulation or is a spacer for another sidewall.

12. Container according to claim 9, characterized in, that the two opposing edges of the at least one shaping are compressed and are joined together substantially evenly at their joint.

13. Container comprising a bottom and a sidewall attached to the bottom, wherein the sidewall comprises a rolled rim at an upper edge of the sidewall opposite to the bottom, wherein the container comprises a single sidewall or a plurality of sidewalls, wherein the sidewall is produced from paper, carton, plastic, PLA, or a renewable and/or biodegradable material, characterized in that at least one shaping is shaped into the sidewall, wherein the at least one shaping is at least partially ring-shaped, wherein the shaping extends at least partially over the perimeter of the sidewall, wherein the shaping is inwardly or outwardly directed, wherein the at least one shaping is compressed in height, characterized in, that the sidewall comprising the at least one shaping comprises a heat-sealable material or is coated with a heat-sealable material.

14. Container according to claim 9, characterized in, that the at least one compressed shaping increases the rigidity of the sidewall.

15. Container according to claim 9, characterized in that the at least one compressed shaping forms a high-frictional grip area.

16. Container according to claim 9, characterized in that it is made from plastic, paper, or carton material.

17. Container according to claim 9, characterized in, that the shaping is formed as a circumferential ring, ring segment, spiral, or spiral segment.

18. Container according to claim 9, characterized in, that the at least one shaping is arranged close to the bottom and serves as stacking support, wherein the at least one shaping is inwardly directed.

19. Container according to claim 18, characterized in that either an upper edge or a lower edge of the at least one shaping is pulled further inwards than the other edge.

20. Container according to claim 9, characterized in, that the container includes a plurality of shapings wherein the shapings are arranged side by side in a vertical direction, wherein at least one shaping proximate the bottom of the container has a lower depth than at least one shaping closer to the rolled rim.

21. Container according to claim 9, characterized in, that it comprises a second sidewall, wherein the second sidewall can be single-layered or multi-layered, wherein the second sidewall is wrapped around the first sidewall or wherein the second sidewall is pulled over the first sidewall and is mechanically locked with the first sidewall.

22. Container according to claim 9 characterized in, that the at least one shaping comprises a fill line.

23. Container according to claim 9, characterized in, that the at least one shaping includes two opposing flanks and two opposing edges and wherein the two flanks and/or the two edges of the shaping are glued or sealed together.

24. Container according to claim 9, characterized in, that the compressed shape of the at least one shaping is secured by a second sidewall.

25. Container according to claim 24, characterized in, that the second sidewall is connected to the sidewall and/or the bottom at one or more connection points.

26. Container according to claim 9, characterized in, that the at least one shaping acts as a spacer between the sidewall and a second sidewall.

Description

[0039] The inventions are now explained in further detail according to the figures. This explanation does not limit the scope of protection. The explanation apply to all inventions, respectively.

[0040] FIG. 1 shows a cup comprising three outwardly directed shapings.

[0041] FIG. 2 shows a cup according to FIG. 1 with compressed shapings.

[0042] FIG. 3 shows a detailed cutaway view of a compressed shaping.

[0043] FIG. 4 shows a schematic illustration of the production process for a cup comprising at least one inwardly directed shaping according to the present invention.

[0044] FIG. 5 shows a cutaway view of different compressed shapings, one with a void and one a flat ring.

[0045] FIG. 6 shows a drawing of a cup comprising a plurality of outwardly directed shaping and one inwardly directed shaping which serves as stacking support, wherein the outwardly directed shapings are offset from one another in vertical direction.

[0046] FIG. 7 shows a cutaway view of two cups stacked into one another.

[0047] FIG. 8 shows a first embodiment of the inventive container.

[0048] FIG. 9 shows the compression of the shaping.

[0049] FIG. 10 shows an inventive container with compressed shapings.

[0050] FIG. 1 shows a cup 1 with a sidewall 2 and a bottom 3. The upper edge of the sidewall 2 opposite to the bottom 3 comprises a rolled rim 4. According to the illustrated embodiment, three outwardly directed and circumferential shapings 5 are arranged below the rolled rim 4. The shapings 5 are embossments. According to the present invention, the shapings 5 are compressed in height. In the present case the compressed shapings form outwardly directed flat rings 6 as illustrated in FIG. 2. The person skilled in the art understands that there can be more or less shapings 5 and that the shapings can be directed inward and/or outwardly. The sidewall 2 is made of paper material or carton and comprises a coating of polyethylene 7 on the inner surface. During the compression of the shapings 5 preferably at least this coating 7 is heated up so that, in the region of the edges 8 of the shapings 5, the edges 8 of each shaping 5 are heat-sealed together. It is possible to also use other well-known sealable materials, such as sealable materials produced from renewable resources, for the coating 7. The coating 7 can be applied on the entire surface or on parts of the surface of the sidewall of the container. By applying a coating 7 on the entire surface it is possible to avoid that the sidewall 2 is moistened by liquid filling material. The edges 8 can also be glued or mechanically attached to each other.

[0051] Furthermore, it is preferred that the sidewall 2 is at least partially made of plastic, PLA and/or renewable and/or biodegradable resources.

[0052] Due to the bonding of the edges 8 it is avoided that the shapings 5 which are compressed to rings 6 reopen. Moreover, a comparatively even surface is also realized in the region of the rings 6 on the inner surface of the cup 1. It is avoided that filling material, for example a beverage like coffee tea or a cold drink or a food like soup, percolates into the rings 6.

[0053] Furthermore, the rings 6 are, thereby, hermetically sealed. During the compression, the rings 6 are usually not pressed together completely flat so that a void volume 9 is formed inside the rings 6. Besides, it is preferred that the rings 6 are pressed together completely flat by means of an appropriate compressing tool.

[0054] The rings 6 stiffen the sidewall 2 of the cup 1. An unintentional compression while holding the cup 1 is avoided. Due to this constructively increased rigidity it is, furthermore, possible to reduce the material thickness of the sidewall 2. Moreover, it is possible to use a softer material.

[0055] The rings 6 not only stiffen the sidewall 2 but also serve as a very good insulation, especially for single-sidewall-cups 1. The void volumes 9, thereby, serve as very good heat insulation. Thereby, it is possible to comfortably hold cups filled with hot or cold beverages. Besides, due to the texture formed by the rings 6 a very good slip resistance is provided. It is assured that the cup 1 does not slip unintentionally from the hands of a user.

[0056] The rings 6 can also serve as spacer for another sidewall 2. For example, it is possible that the sidewall comprises a second preferably outer sidewall. Three or more sidewall-constructions are also preferred. Furthermore, it is possible that both the inner sidewall and the outer sidewall comprise shapings 5 and/or rings 6. Furthermore, it is preferred that, e. g., the rings of the outer sidewall are inwardly directed and the rings of the inner sidewall are outwardly directed.

[0057] The joint of the edges 8 cannot only be realized by hot sealing, but also by bonding or the like. For this purpose, it is possible to apply a hot or cold glue in the region of the edges 8, wherein the hot or cold glue generates the joint during or after the compression. A combination of sealable material and glue is also preferred.

[0058] By using an excess of sealable material and/or glue it is possible to realize an additional smoothing of the junction of two edges 8.

[0059] To compress the shapings 5 it is possible to heat up the shaping using, e. g., ultrasonic sound, laser or other heat sources. The forces required for the compression can, thereby, be reduced. Furthermore, a sealable material is already softened so that a joint is generated as soon as two edges 8 touch each other.

[0060] Preferably, prints or figurations can be applied on the outside of the cup 1.

[0061] Preferably the shapings 5 have 3 height and 2 mm depth. Other dimensions are possible and depend on the intended rigidity and the used material.

[0062] FIG. 4 shows another embodiment of the production process for a cup according to the present invention. The sidewall 42 of the depicted cup 41 comprises a plurality of inwardly directed shapings 45, here embossments. One of these shapings 45 is arranged close to the bottom 3. This bottommost shaping 45 compressed to a ring 46 and serves as stacking support.

[0063] In case a plurality of cups 41 is stacked into one another, the lower edge of these cups pushes against this ring 46. Thus, it is avoided that the upper cup is further pushed down. Thereby, it is prevented that cups stacked into one another strongly adhere to each other and cannot or can only hardly be denested.

[0064] It is preferred that the other shapings 45 illustrated in this embodiment are compressed as well. Furthermore, it is preferred, that these shapings 45 are outwardly directed.

[0065] Any combination of the two illustrated embodiments such as any arrangements 5 and 45, respectively, on the sidewall 2 and 42, respectively, are conceivable as well.

[0066] The sidewall 2 and 42, respectively, can be made from a different material. It is conceivable that plastic or any other fiber material is used.

[0067] It is possible that the sealable material is any heat-sealable coating, a sealing wax or the like. Sealable materials produced from renewable resources are conceivable. Among these materials are PLA or the like.

[0068] It is, furthermore, conceivable, that the shapings 5 and 45, respectively, only comprise segments capable to form a ring 6 together. Besides, it is conceivable that the shapings 5 and 45, respectively, are spiral-shaped, sectionally spiral-shaped or comprise a ring-shaped part.

[0069] Furthermore, it is conceivable, that a plurality of shapings 5 and 45, respectively, arranged preferably in the upper region of the cup vary in position and height. Thereby, shapings being positioned closer to the bottom are arranged further inside and comprise a lower depth, respectively. Due to this construction as illustrated in FIG. 6 the stackability of a plurality of cups is improved. The cups can be pushed into one another so that the stacking height is minimized. However, the cups can still be easily denested.

[0070] Furthermore, it is conceivable that an outer and optionally multi-layered sidewall 2 is wrapped around the cup and locks with the shapings 5 and 45, respectively. It is also possible that the outer sidewall is pulled over the cup.

[0071] Furthermore, it is conceivable that the inner sidewall comprises a flat surface whereas an outer sidewall comprises a or a multitude of shapings 5 and 45.

[0072] FIG. 8 depicts on the left hand side the inventive container 1 and shows on the right hand side an enlarged partial view of a first sidewall 2 of the container 1. The first sidewall 2 comprises at its upper end a rim 4 and is at its lower end connected to a base 8. The first sidewall 2 and the base 8 define the filling volume 14 of the inventive container. The first sidewall 2 is, in the present case, made from a flat cardboard-segment, which has been formed in the shape of a conus and whose opposite ends have been glued together. Near its top, the first sidewall comprises a shaping 5, which is directed outwardly, i.e. away from the filling volume 14. This shaping has been incorporated into the first sidewall plastically, i.e. by plastic deformation, for example by embossment. Parts of the inner surface of the shaping 5, especially edges 11 can be seen by the user of the container and represents a filling line 12.

[0073] The height H in which the filling line 12 is arranged, can be freely chosen according to the desired filling volume. The inventive container can comprise two or more shapings and thus two or more filling lines. In the present case, the shaping 5 has been compressed after it has been inserted into the first sidewall 2 and the flanks 13 and/or the edges 11 have been bonded, preferably glued or sealed to maintain the shaping in its compressed state. Due to the compression of the shaping 5 and its fixture in the compressed state, the filling line is very fine and preferably at least only very little liquid enters into the shaping. The filling line 12 does not reduce the inner diameter of the inventive container.

[0074] The compression of the shaping 5 is depicted in FIGS. 9a-9c. These figures show the compression of the height h of the shaping 5, 10. FIG. 9a shows the shaping, here an embossment 5, after it has been plastically introduced into the first sidewall 2. This shaping is subsequently compressed by the axial force F, so that the height h of the shaping decreases. FIG. 9b shows a first state of compression, which can be however the final state. FIG. 9c depicts, in comparison to FIG. 9b, a further compression of the embossment 5, in which the edges 12 of the shaping 5 lie on top of each other or at least adjacent to each other. In this state, the height h of the shaping is, in comparison to the embodiment according to FIG. 9b, even further reduced. In order to maintain the shaping 5 in the compressed state, the flanks 13 and/or the edges 11 of the shaping can be attached to each other, preferably glued or sealed.

[0075] An alternative embodiment of the inventive container is depicted in FIG. 10. Here, the container comprises two shapings 5, 10 and thus two filling lines 12. The lower filling line can be utilized to indicate an amount of powder or pellets to be added to the container. The upper filling line indicates the amount of liquid to be added to the container. The second sidewall 15 is utilized to maintain the shapings 5, 10 in their compressed state as depicted in FIG. 9b or 9c. This is done by compressing the shapings and holding the shaping in their compressed state, while the second sidewall is connected to the first sidewall either directly at the tip of the shaping 5, 10 or, as here depicted in FIG. 3, at the rim 4 and at the lower end of the first sidewall 2. As soon as this connection 16, 17 is ridged, the shapings 9, 10 are maintained in their compressed state by the second sidewall 3. The shapings 5, 10 function here also as spacers between the first and the second sidewall, so that an air gap 18 between the two sidewalls is maintained, even if pressure is applied to the second sidewall, for example by a user.