Cup

Abstract

Cup having a base and an adjoining shell, it being possible for the shell to be provided with a mouth roll at its opposite end to the base and to be configured with a single layer or multiple layers, at least one layer of the shell being produced from paper or cardboard or other comparable materials, at least one layer of the shell being provided with elevations and/or depressions substantially over its entire height and at least approximately the entire circumference, the difference in depth between the maximum elevation or depression and the material layer or the depression or elevation varying over the height of the shell and/or over the circumference, and it being possible for the mouth roll to be formed integrally on the inner layer or the only layer.

Claims

1. Cup comprising a base and an adjoining shell having an innermost layer and an outermost layer produced from paper or cardboard, wherein the outermost layer of the shell is provided with a plurality of elevations and depressions substantially over its entire height and at least approximately the entire circumference; wherein the outermost layer wraps around the innermost layer and includes a first end and a second end, the first end joined to the innermost layer along the height direction by a first bonding seam set back from the first end and the second end joined to the innermost layer along the height direction by a second bonding seam set back from the second end, the second end overlapping the first end in the height direction; wherein the innermost layer at least partially contacts the out most layer along the depressions provided on the outermost layer; wherein the innermost layer does not contact the outermost layer along the elevations provided on the outermost layer; and wherein a plurality of discrete embossed formations are distributed over the shell to provide the plurality of elevations and depressions on the shell.

2. Cup according to claim 1, wherein the spacing between two adjacent said elevations or two adjacent said depressions varies over the height of the shell.

3. Cup according to claim 2, wherein a height of a first elevation formed by one of the discrete embossed formations is less than a height of a second elevation formed by another of the discrete embossed formation.

4. Cup according to claim 1, wherein a width of each elevation is greater than a width of each adjacent depression at least in a gripping region by a ratio of approximately 2:1, wherein the width of each depression is the width of an area where the outermost layer is in contact with the innermost layer.

5. Cup according to claim 1, wherein the shell has at least one region wherein one or more information items are provided.

6. Cup according to claim 1, wherein the innermost layer is provided with a plurality of elevations and depressions, and wherein the elevations of the innermost layer at least partially in contact the depressions of the outermost layer.

7. Cup according to claim 1, wherein the innermost layer is a smooth layer, and wherein the innermost layer of the shell is joined sealingly to itself and to the base.

8. Cup according to claim 7, wherein the innermost layer and the outermost layer are joined sealingly to one another at their upper and/or lower ends.

9. Cup according to claim 1, wherein at least one perforation is provided in the outermost layer at an upper and/or lower end of the shell, and wherein a coupon is delimited from the remaining shell by the at least one perforation.

10. Cup according to claim 9, wherein the outermost layer covers part of the cup height, and wherein the outermost layer has recesses.

11. Cup according to claim 1, wherein along a first cup height, a first depth between a first most outwardly extending portion of a first said elevation and a first most inwardly extending portion of a first adjacent said depression is greater than a second depth between a second most outwardly extending portion of a second said elevation and a second most inwardly extending portion of a second adjacent said depression, wherein the first adjacent said depression is adjacent to the first said elevation and the second adjacent said depression is adjacent to the second said elevation.

12. Cup according to claim 1, wherein a first distance between a most inwardly extending portion of a first said depression and a most outwardly extending portion of an adjacent said elevation at a first height is less than a second distance between the most inwardly extending portion of the first said depression and the most outwardly extending portion of the adjacent said elevation at a second height, and wherein the adjacent said elevation is adjacent to the first said depression.

13. Cup according to claim 1, wherein each discrete embossed formation forms one elevation from the plurality of elevations and depressions and each space between adjacent discrete embossed formations forms one depression from the plurality of elevations and depressions.

14. Cup according to claim 1, wherein a height of the elevations and depressions varies along at least one of the height and the circumference of the shell.

15. Cup comprising a base and an adjoining shell having an innermost layer and an outermost layer produced from paper or cardboard, wherein the outermost layer of the shell is provided with a plurality of elevations and depressions substantially over its entire height and at least approximately the entire circumference; wherein the innermost layer at least partially contacts the outermost layer along the depressions provided on the outermost layer; wherein the innermost layer does not contact the outermost layer along the elevations provided on the outermost layer; wherein the plurality of elevations and depressions are formed by a plurality of discrete embossed formations configured as shaped elements distributed over the height and circumference of the outermost layer of the shell; and wherein the outermost layer has at least one thickened portion, and wherein the at least one thickened portion is provided in a central region of the height of the shell.

16. Cup comprising a base and an adjoining shell having an innermost layer and an outermost layer produced from paper or cardboard, wherein the outermost layer of the shell is provided with a plurality of elevations and depressions substantially over its entire height and at least approximately the entire circumference; wherein the innermost layer at least partially contacts the outermost layer along the depressions provided on the outermost layer; wherein the innermost layer does not contact the outermost layer along the elevations provided on the outermost layer; wherein a plurality of discrete embossed formations are distributed over the shell to form the elevations and depressions of the shell; and wherein a width of each depression is greater than a width of each elevation at least in a gripping region by a ratio of approximately 2:1, wherein the width of each depression is the width of an area where the outermost layer is in contact with the innermost layer.

Description

DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

(1) In the drawing:

(2) FIG. 1 shows a double-walled cup having a smooth inner shell and an outer shell which is provided with undulating elevations and depressions,

(3) FIG. 2 shows a section through the shell of this cup,

(4) FIG. 3 shows a double-walled cup having a smooth inner shell and an outer shell which is provided with elevations and depressions in the form of lines,

(5) FIG. 4 shows a double-walled cup having a smooth inner shell and an outer shell which is provided with dedicated elevations and depressions,

(6) FIG. 5 shows a single-walled cup, the shell of which is provided with elevations and depressions in the form of wavy lines,

(7) FIG. 6 shows a section through a double-walled cup having an embossed inner and outer layer,

(8) FIG. 7 shows a section through a cup having an outer shell, in which the outer face is smaller than the contact area of the outer shell on the inner cup,

(9) FIG. 8 shows a section through a cup having an outer shell, in which the outer face is larger than the contact area of the outer shell on the inner cup, and

(10) FIG. 9 shows a section through the shell of the cup in FIG. 1 according to an alternative embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

(11) In FIG. 1, 1 denotes a cup which is produced from paper or cardboard with a base 2 and a shell 3. A mouth roll 4 which is wound to the outside and covers the opening of the cup 1 is attached at that end of the shell 3 which faces away from the base 2.

(12) In the first exemplary embodiment, the shell 3 of the cup 1 is of double-walled configuration and comprises an inner shell 3a which is produced from smooth material and an outer shell 3b which is provided with a structure 5 and is placed around the inner shell 3a. Here, a first end of the outer shell 3b is joined to the inner shell 3a along the height direction by an adhesive seam 6 which can be arranged set back with respect to the end. Here, the adhesive seam 6 can preferably be set back between one and eight millimetres, in order to avoid the adhesive which is used for the adhesive seam 6 escaping at the end. The adhesive seam 6 can also be made up of discrete points or other geometric designs. A very wide variety of hot-melt adhesives, cold adhesives or else dispersion adhesives can be used for the adhesive seam 6, depending on the intended use of the cup 1 and the materials which are used.

(13) The second end of the outer shell 3b can overlap the first end and is fastened in the region of the first end by way of a further adhesive seam 7.

(14) The two ends of the outer shell 3b can overlap one another. It is conceivable that the overlap is between one and ten millimetres. However, it is also conceivable that the ends only butt against one another or even assume a slight spacing from one another, which spacing should not exceed one millimetre.

(15) Here, the outer shell 3b is first of all adhesively bonded at the first end and is then wound around the inner shell 3a.

(16) The adhesive seam 7 can either fasten the second end to the first end of the outer shell 3b or else to the inner shell 3a. The same adhesives can be used as in the adhesive seam 6.

(17) The adhesive seam 7 can also be arranged set back from the end, with the result that there is also the option that the second end of the outer shell 3b is adhesively bonded directly to the inner shell 3a despite an overlap with the first end.

(18) The inner shell 3a overlaps at its ends and is adhesively bonded sealingly.

(19) The outer shell 3b is provided with wavy lines 8 which run substantially in the height direction of the shell 3 and form the structure 5. Here, the wavy lines 8 form elevations 9 and depressions 10. Here, however, the designations elevations 9 and depressions 10 do not necessarily denote that they are elevated or depressed in each case with respect to a zero position which is defined, for example, by the original paper plane. Rather, the elevations 9 and the depressions 10 describe elevations and depressions with respect to one another.

(20) The height of the elevations 9 and depressions 10 can change over the shell height. In this exemplary embodiment, a plurality of regions 11 of less pronounced configuration of the elevations 9 and the depressions 10 are arranged which run around the outer shell 3b. Other arrangements are conceivable.

(21) As a result of these regions 11, the outer shell 3b is easier to grip. In addition, an anti-slip means is formed which prevents accidental slipping. Nevertheless, this refinement does not impede the stacking capability of a plurality of cups 1 in one another.

(22) In addition, smooth regions 12 can be provided which can carry information items which are printed or else embossed. It is also possible that logos or the like are arranged in these regions 12. The region 12 represents, for example, a slightly depressed, circular area which carries a logo.

(23) Channels are formed by the structure 5 of the outer shell 3b, which channels run at least approximately in the height direction of the shell and are closed by the inner shell 3a, so that real, closed channels result here which can be open at their ends.

(24) The air which is contained in the channels ensures a very satisfactory insulating effect. If, for example, a hot or cold drink is filled into the cup 1, the cup 1 can nevertheless be handled very satisfactorily, since the outer side of the outer shell 3b does not take on the high or low temperature of the drink. The temperature equalization of the drink with the surroundings is likewise reduced.

(25) If the channels are open at their ends, a cooling effect can also be achieved by the convection of air which occurs through the channels, for example for hot drinks such as coffee or the like, in order to cool the drink more quickly to a temperature which is conducive to drinking.

(26) It is also conceivable that perforation openings 13 are provided at the upper and lower edges of the outer shell 3b, which perforation openings 13 make an unimpeded entry and exit of air possible from the channels.

(27) Furthermore, it is conceivable that the outer shell 3b has such a high inherent rigidity that it bears against the inner cup 3a only in predefined regions, preferably at the upper and/or lower edge, and otherwise is at a spacing from the inner cup 3a, as a result of which an even more satisfactory insulating effect is achieved.

(28) It is also conceivable that the outer shell 3b itself is configured with multiple layers. Here, a smooth layer can be applied to the structured layer and can be joined to it. The smooth layer can be arranged either on the inner side or outer side.

(29) It is also conceivable that the cup 1 comprises a plastic or any other desired materials and only the outer shell 3b is produced from paper or cardboard.

(30) The outer shell 3b can also be produced separately from the cup 1 and can subsequently be pushed onto the cup. The static friction is often sufficient here. An adhesive join is conceivable.

(31) The above-described adhesive bonding can also have further adhesive points on the circumference of the cup 1. It is also conceivable, for example, that the adhesive bonding takes place along the circumference of the cup 1. Here, one or more adhesive points or adhesive lines can be provided.

(32) FIG. 2 shows a section through the shell 3 of the cup 1, with the result that the channels can be seen which are formed from the elevations 9 and depressions 10.

(33) The spacing 14 between two adjacent elevations 9 or depressions 10 can vary over the height of the shell 3. In this first exemplary embodiment, the spacing 14 is greater in an upper region of the shell 3 than in a lower region of the shell 3. These different spacings provide a compensation with regard to the available material; which compensation provides an adaptation to different diameters over the height of the cup 1. This adaptation avoids folds or the like in the outer shell 3b.

(34) As a result, there is also the option in some circumstances to use only slightly elastic papers or cardboards for the outer shell 3b.

(35) FIG. 3 shows a further refinement of the invention. The cup shown here is denoted by 31. Here, a structure 35 which is formed from parallel lines 38 is provided instead of the structure 5 which is formed from wavy lines 8.

(36) The outer shell 3b has a bulge in a central region 32. This results in a circumferential thickened portion of the outer shell. This thickened portion is produced by a greater spacing 33 of the lines 38 in this region. The greater spacing 33 can be accompanied by a greater height of the elevations 9 and depressions 10.

(37) FIG. 4 shows a further refinement of the invention. Here, discrete embossed formations 48 are provided which in their plurality together form a structure 45.

(38) As in the first exemplary embodiment, the height of the embossed formations can also vary in this exemplary embodiment. For example, logos or the like can be used as embossed formations 48.

(39) It is also conceivable in all these multiple-layer refinements that a perforation 46 is provided which surrounds a shell region 47 which can be severed as a coupon.

(40) However, single-layer shell designs are also conceivable. FIG. 5 shows one refinement which exhibits a shell 53 of this type which is foamed only from the structured outer shell 3b.

(41) Once again, the shell 53 has a depth of the structure 55 which varies over the shell height 53. In this example, the structure 55 decreases towards the upper and lower edges of the shell 53, with the result that the mouth roll 4 can be arranged very easily and a sealed connection to the base 2 can be provided.

(42) However, it is also conceivable here that the depth also varies to a greater extent.

(43) A very wide variety of embossed formations of the structuring are also conceivable in the single-layer refinement.

(44) In one exemplary embodiment, the depth of the structuring lies in the range between 0.1 and 2.5 millimetres; the spacing between adjacent elevations 9 or depressions 10 should be between 0.1 and 3 millimetres. The transition radii between the elevations 9 and the depressions 10 can be in the range between 0.5 and 1.25 millimetres.

(45) The shell 3b can be structured in such a way that it represents, for example, a landscape or other depictions. Here, the structuring can be accentuated further by corresponding colouring. Here, the colouring can be aligned to the embossed formations.

(46) The discrete embossed formations 48 can comprise logos, image elements or any other desired representations, for example also text elements, which then together form a structuring of the shell 3b.

(47) According to the invention, it is also conceivable if the outer shell 3b takes up only part of the cup height. The outer shell can therefore be limited, for example, to the gripping region. The additional material for the outer shell 3b is saved in regions which do not require insulation. The outer shell 3b can also be limited to defined regions which require stabilization.

(48) In this context, it is also conceivable that the outer shell 3b has recesses. These recesses can, for example, open the view of the inner shell 3a or, if the latter is transparent, also of the contents of the cup. Material for the outer shell 3b is also saved in this variant.

(49) It is also conceivable that both the outer shell 3b and the inner shell 3a are structured or embossed, as is shown in FIG. 6.

(50) The embossed formations 4 of the two layers 3a and 3b are directed at least partially counter to one another, as a result of which the spacing of the layers is increased.

(51) It is also conceivable that the structuring 5 is configured in such a way that the area which faces the inner shell 3a is larger than the area which faces outwards.

(52) As a result of this refinement, the thermal transfer between the cup 1 and the hand of the user is reduced. Cups which contain very hot or very cold filling product can therefore also be held. In the example which is shown, the ratio between the areas is approximately 1:2.

(53) Here, the outwardly facing area can also be less or more than 50% of the inwardly facing area.

(54) A refinement of this type has proven very effective not only in the case of multiple-layer cups, as shown in FIG. 7, but above all in the case of single-layer cups.

(55) It is also conceivable that the outwardly directed area is also larger than the inwardly directed area, as is shown in FIG. 8.

(56) This is possible, above all, in the case of multiple-layer constructions. The greater outer area ensures pleasant handling, a very satisfactory insulating effect nevertheless being achieved.

(57) Despite this refinement, the cup 1 can still be held very pleasantly. In particular, no unpleasant pressure points are produced. This is, above all, due to the changing depths of the structuring.