EP2371723B1 - Container made of a paper material and method for producing a container made of a paper material - Google Patents

Description

The invention relates to a cup made of a paper material with a fillable interior, which is formed by means of an at least partially conical shell and a bottom, wherein the bottom is connected in the region of the lower end of the interior substantially liquid-tight with the jacket and wherein the interior limiting Sheath has at least one indentation. The invention also relates to a method for producing a cup of paper material,

Cups of paper material with mantle shells are known, and such lobes are intended, for example, to improve the stacking properties of such cups, to improve the grip of such cups, or to maintain a distance between an outer sheath and a sheath, thus providing an insulating Interspace between the outer jacket and jacket is not compressed even when holding a joined cup.

A generic cup is through the European Patent 1227042 State of the art. Described is a thermally insulating cup formed by two conical walls, the inner wall having an inwardly directed groove which serves to stack a similar cup inside the stacking cup. The inwardly directed groove created by curling is intended to give the cup good stacking and destacking properties without jamming a plurality of stacked cups. Experience shows that stacking properties are satisfactory up to a number of about 20 cups. If much more cups are stacked, but then again jamming occur. In particular, these clamps are caused by their own weight by axial pressure, which is directed from the cup opening to the ground in a large number of stacked cups. Even the moderate discontinuation of 50 packaged and stacked cups leads to jamming. The reason for the jamming must be regarded as an insufficient stiffness of the groove, which can not be improved in this manner of manufacture, however, since the rolling leads to a material weakening.

In the German patent application DE 10 2004056932 A1 Although a cup is described with improved stacking properties as the cup described above, but also in this application, the problem of jamming due to the deformation of the cup jacket in the region of the indentation is not satisfactorily solved.

From the German patent application DE 10 2007024254 A1 a generic paper cup is known, which has a molding in the form of a circumferential shoulder, which serves in the stacked state of several cups to support the lower edge of the bottom frame of a respective upper cup. In order to improve the stability of the cup, an outer shell can be glued surface on the, the interior forming jacket in the manner of a sleeve, see Figure 7. The glued outer sheath then bridges the shoulder-shaped indentation and is located above and below the indentation on the, forming the interior of the jacket.

From the European patent application EP 1227043 A1 Another generic cup is known, which is essentially the same as that in the EP 1227042 A1 described cup is constructed.

From the British disclosure GB 2420267 is a generic cup with a circumferential shoulder known. The cup can be made of paper material whose inner side is completely coated with a thin layer of polyethylene.

From the US patent US 4,852,793 a container made of a paper material is known in which a ring is placed on a connection between the shell and the lid on the front side of the shell. The lid is then connected to the outside of the ring.

From the European patent application EP 0111356 A1 a cylindrical container is known which is provided with a reinforcing layer extending over its circumference.

The invention is intended to provide an improved cup of paper material and an improved method of making a cup of paper material.

According to the invention for this purpose, a cup of a paper material with a fillable interior, which is formed by means of at least partially conical shell and a bottom provided, wherein the bottom is connected in the region of the lower end of the interior substantially liquid-tight with the jacket and wherein the Interior limiting jacket has at least one Einformu ng, wherein in the region of the at least one indentation a reinforcement for stabilizing the indentation is arranged, wherein the reinforcement extends only in the region of the indentation and bears against the indentation.

Surprisingly, it has been found that reinforcement in the region of the indentation can substantially improve the performance characteristics of cups of paper material. It has thus been found that these indentations, which may be provided for various purposes on the cup, can deform so much under load that they can no longer fulfill the task intended for them, for example reliably enabling the stacking of several cups or a distance between them Outer shell and coat to maintain. The deformation of the recesses surprisingly occurs, although on cups made of paper materials in and of themselves no excessive forces act. For example, when stacking a plurality of paper cups, only the weight of each upper cup acts on the lower cups. By providing a reinforcement can now be ensured that the shape of the indentation does not change significantly under load or only changed so that the indentation can fulfill the intended task.

In a further development of the invention, the reinforcement is designed as a coating applied to the jacket.

For example, the reinforcement may be formed as a plastic coating sprayed in sections and in particular annularly in the region of the indentation onto the jacket. Paper material from which paper cups are made are typically coated on an inside which comes in contact with liquid, for example plastic coated. In the field of indentation can then after introduction of the In addition, a further coating can be applied to stabilize the indentation.

In a further development of the invention, the reinforcement is formed as a coat of adhesive on the coat.

Surprisingly, it has been found that with the simple application of an adhesive trace, a very substantial reinforcement of indentations on the jacket can be effected. The application of an adhesive trace is particularly simple, since usually the bottom and the jacket and possibly an outer jacket are already connected to each other by means of adhesive. The additional application of an adhesive trace in the region of the indentation therefore does not require any additional devices in comparison to a conventional device for producing cups. As an adhesive according to the invention is glue, hot melt adhesive, plastic adhesive udgl. designated.

In a development of the invention, the adhesive track is applied to stabilize the indentation over the entire circumference of the jacket.

In this way, the indentation can be stabilized in a simple manner over the entire circumference of the shell and the application of the adhesive trace is also easy to do, since, for example, when connecting the bottom to the shell around the entire cup circumference around a liquid-tight connection must be made. The adhesive track is advantageously arranged over the entire circumference of the shell at a constant height. Depending on the type of indentation and the type of adhesive used, it may be advantageous to arrange the adhesive track on a side facing away from the interior of the shell. In this way, the adhesive trace can be arranged completely invisible in a double-walled lsolierbecher, as they zwisehen in the finished state of the cup the insulating outer sheath and the liquid-receiving sheath is located.

In a further development of the invention, an outer casing is provided, wherein the outer casing is connected by means of the adhesive trace with the shell and / or the bottom.

Double-walled insulating cups have an outer jacket, which is pushed onto the actual cup or wrapped around this cup. The adhesive track to stabilize the indentation can now be used simultaneously to connect the outer shell, for example, at its lower end to the jacket or the floor. In this way, the applied adhesive track can fulfill a dual function, namely on the one hand to stabilize the indentation and on the other to secure the outer sheath safely.

In a development of the invention, the reinforcement is designed as a separate reinforcing component, in particular as a reinforcing ring.

By providing a separate reinforcing construction, molding can be stabilized on the shell. The reinforcing member is advantageously formed to match the region of the indentation to be reinforced. The reinforcing member may for example consist of Kusntstoff and be formed for example as a plastic ring. Such a plastic ring may be pushed onto an outer side of the jacket or else inserted into the interior of the cup and fastened in the region of the indentation. If the reinforcing member is inserted into the interior of the cup, then this reinforcing member can also be used for mounting other parts that do not belong directly to the cup, for example for securing a lid or a component with a filling opening, when the reinforcing member in the region of the open end arranged the cup is. As a separate reinforcing member but can for example also serve a portion of an insulating outer jacket, which is placed, for example in the region of the indentation ring around the inner cup and, for example, additionally glued to the inner cup.

In a further development of the invention, the indentation is designed as a means for holding a similar cup in the stacked state of several cups.

For example, the indentation is formed as a step-like shoulder which rebounds into the interior of the cup, or as a groove with an approximately circular cross-section.

In a further development of the invention, the bottom and the jacket in the region of the liquid-tight connection form a bottom frame, wherein the indentation is formed as a means for holding the bottom frame of a similar cup in the stacked state of several cups.

Especially with such a design of the indentation, so as a support for the bottom frame of another cup, the provision of a reinforcement in the region of the indentation has proven to be particularly advantageous. In a particularly simple manner can be enhanced by applying a Kiebstoffspur indentation and, surprisingly, it has been found that the indentation after the reinforcement can withstand even very large stacking forces. The jamming of several cups is not to be feared in the cup according to the invention even when a very large number of cups is stacked.

In a further development of the invention, the cup has a jacket which at least partially surrounds the casing, the indentation is formed as a means for holding the outer shell of a similar cup in the stacked state of a plurality of cups.

For example, the cups are stacked on the impression on the jacket and on the bottom roll of the outer shell. Also in this case, the reinforcement in the region of the indentation can significantly improve the stacking properties of such cups.

In a further development of the invention, as seen from an opening of the cup in the direction of the bottom, the indentation forms an at least partially cross-sectional reduction of the interior space, the reinforcement being arranged immediately behind the cross-sectional reduction.

In this way, especially when the indentation is provided as a means for holding similar cups when stacking a plurality of cups, the reinforcement can prevent the deformation in the loaded state from losing its shape so that stacked cups jam together. The arrangement of the reinforcement immediately behind the reduction in cross-section thereby causes the indentation deformed at most so that the stacked cup presses the jacket outwardly above the cross-sectional reduction, but that the stacked cup does not slip under the cross-sectional reduction, which would inevitably be jamming.

In a further development of the invention, the reinforcement is located on an outer side of the jacket facing away from the interior, on the section of the indentation forming the cross-sectional reduction.

In this way, by means of an adhesive trace, a separate reinforcing component or a coating applied in the form of a coating reinforcement of the jacket of the cup reinforced exactly in the area become, in which the greatest deformation forces occur when stacking several cups.

The problem underlying the invention is also solved by a method for producing a cup of paper material, in which the following steps are provided:

essentially liquid-tight joining of a conical or cylindrical shell and a bottom,

Introducing at least one indentation in the jacket and

Providing a reinforcement in the region of the at least one indentation for stabilizing the at least one indentation.

With the method according to the invention, moldings in the jacket can be reinforced in a particularly simple manner. To provide the reinforcement, only additional material is applied to the paper material of the cup. Especially with paper cups, which indeed have a continuous, substantially constant material thickness, the provision of reinforcements, in contrast to injected plastic cups is extremely problematic. The invention provides a remedy by placing a reinforcement in the region of the at least one indentation after the introduction of an indentation.

In a further development of the invention, the reinforcement is provided on a side facing away from the interior of the cup outside of the jacket.

In this way, the interior of the cup which comes into contact with liquid remains unaffected by the attachment of the reinforcement, so that, for example, material is also used as reinforcement can, for example, no longer come in contact with the liquid.

In a development of the invention, an adhesive track is applied in the region of the indentation in order to stabilize the at least one indentation.

By attaching a Ktebstoffspur a particularly effective and thereby surprisingly simple reinforcement can be done. To connect the shell and the bottom as well as to form a conical sleeve from the Papierzuschnilt for the jacket and also for attaching the outer cup adhesive must be applied anyway in the rule. As a result of the method according to the invention, a conventional apparatus for producing paper cups can be used to attach an additional adhesive track in the region of the indentation and thereby stabilize the indentation.

The invention substantially improves the stacking and destacking properties of cups. In particular, in comparison to the state of the art significantly more cups stackable, in particular, not jammed even if a large number stacked cup is discontinued jerky, or if in any other way a large axial pressure acts on the stacked cups, the z. B. may occur when a Bechermagaxins.

By attaching the indentation, it may happen that the cup is deformed and is no longer circular. This is also avoided by the invention.

According to the invention, the indentation is enhanced by the targeted application of a coating, preferably by a Bracheübitchen hot-melt. Furthermore, the indentation or the deformation of the cup jacket can be reinforced by a device, which is designed for example as a ring, which preferably already includes the shape of the indentation. A device of this type is preferably made of a plastic or paper. It is not relevant here, where this ring is attached to the cup jacket, that is, whether this ring is located in the inner or outer area of the cup label.

The well-known cup according to EP 1 227 042 B1 has the disadvantage that the forces occurring during stacking are transmitted via the jacket bounding the interior and over the outer jacket. The forces that must be forwarded within the cup from the first means for Hatten to the second means for holding, are first transmitted through the inner space-limiting jacket to the connection point between the inner shell and outer shell and passed through this connection point to the outer jacket, in the outer jacket the forces are then forwarded to the trained as Einrollung second means for holding and transferred there to the next cup. As a result, both the inner shell and the outer jacket must be designed to be stable enough to absorb the forces occurring. In addition, the joint between the outer shell and the inner shell must be designed for the maximum forces occurring.

• Formen wenigstens eines ersten Mittels zum Halten eines anderen Bechers gleicher Art an dem den Innenraum begrenzenden Mantel; Formen eines zweiten Mittels zum Halten an der Zarge, das bei einem Stapeln des Bechers mit einem an einem gleichartigen Becher gebrachten ersten Mittel zum Halten zusammenwirken kann.

The design freedom of the cup after the EP 1 227 042 B1 is disadvantageously limited because the attached to the outer jacket second means for holding must always be adapted to the dimensions of the first means for holding another cup of the same kind and to the forces to be transmitted. It is not possible to provide the outer shell with any shape, or to change its shape as desired. In addition, it is not possible to omit, if necessary, the outer shell, without losing the good stacking properties. The stackable cup is preferably made by a process having the following process steps:

• Forming at least a first means for holding another cup of the same kind on the casing defining the interior space; Forming a second means for holding on the frame, which can cooperate in a stacking of the cup with a brought to a similar cup first means for holding.

The second means for holding is arranged on the jacket bounding the interior or on the floor or on a frame, by which the jacket bounding the interior is connected to the floor. In any event, the second means for holding is attached to a component of the cup that is in contact with the fillable interior.

The cup according to the invention has the advantage that it can be safely and stably stacked even without the presence of an outer jacket and also unstacked without jamming, it being possible to provide the cup with a heat-insulating outer jacket.

The inner space limiting coat and the ground are already strong enough to absorb the forces occurring during stacking, since they must also absorb the forces occurring during filling.

In order to prevent jamming of several cups during stacking, it is advantageous that the dimensions of the second means for holding are adapted to the dimensions of the first means for holding another cup of the same type. The first means for holding another cup of the same kind can be formed in any desired manner. It is essential that a contour is formed, the forces acting in the axial direction of the cup forces, ie the forces when stacking between two cups act, can absorb. The first means for holding is preferably designed as a bead or rib which is formed in at least a region along the circumference in the inner space bounding shell, the bead or rib can be designed along the circumference, continuously or intermittently.

Now, if it is provided in an embodiment of the invention that the cup has a heat-insulating outer sheath, while the design of the heat-insulating outer sheath itself is arbitrary. The outer sheath can be made for example of a plastic-paper or composite material. To improve the insulation effect, the outer sheath can also be corrugated, corrugated, embossed or provided with a foamed layer. The outer sheath can also be designed as a multilayer, for example, a corrugated intermediate layer can be provided, which is covered by a smooth overlying outer layer. The fact that the cup according to the invention can be stacked independently of the outer shell, one and the same inner cup can be combined in a simple and almost arbitrary manner with a variety of outer shells. Without changing the shape and dimensions of the inner cup or of the components forming the interior of the filling, it is possible to produce different cups with different visual and haptic appearances, since the appearance perceived by the user of the cup is determined primarily by the design of the outer casing becomes.

Furthermore, the lower curl of the outer shell can be seen in Fig. 3a, b, d be used as an additional reinforcing element of the indentation.

Furthermore, a ring for reinforcing the indentation is provided according to the invention, which preferably consists of a plastic.

This ring may have the shape of the region of the indentation to be supported. Furthermore, according to the invention, the indentation itself can be made by means of the ring by pressing it onto the cup jacket.

The ring should preferably be glued to the cup jacket if the forces occurring due to the compression of the ring and cup jacket are not sufficient enough for permanent fixation of the ring.

Fig. 1

Eine Ansicht eines längsschnitts eines erfindungsgemäßen Bechers gemäß einer ersten Ausführungsform,

Fig. 2

eine Ansicht eines Längsschnitts durch zwei gestapelte erfindungsgemäße Becher gemäß einer zweiten Ausführungsform,

Fig. 3a bis 3d

abschnittsweise Ansichten von Längsschnitten durch jeweils zwei enfindungsgemäße Becher gemäß einer dritten, vierten, fünften bzw. sechsten Ausführungsform,

Fig. 4

eine abschnittsweise Ansicht eines Längsschnittes durch einen erfindungsgemäßen Becher gemäß einer siebten Ausführungsform,

Fig. 5

eine abschnittsweise Ansicht eines Längsschnitts durch einen erfindungsgemäßen Becher gemäß einer achten Ausführungsform,

Fig. 6

eine abschnittsweise Ansicht eines Längsschnitts durch einen erfindungsgemäßen Becher gemäß, einer neunten Ausführungsform, wobei eine von außen an den Bechermantel angesetzte Vorrichtung zur Verstärkung der Einformung vorgesehen ist, die hier als Ring dargestellt ist, und

Fig. 7a und 7b

abschnittsweise Ansichten von Längsschnitte durch erfindungsgemäße Becher gemäß einer zehnten bzw. elften Ausführungsform, wobei eine von innen an den Bechermantel angesetzte Vorrichtung zur Verstärkung der Einformung vorgesehen ist, hier als Ring dargestellt.

Further features and advantages of the invention will become apparent from the claims and the following description of preferred embodiments of the invention in conjunction with the drawings. Individual features of the different embodiments shown can be combined in any manner with one another without exceeding the scope of the invention. In the drawings show:

Fig. 1

A view of a longitudinal section of a cup according to the invention according to a first embodiment,

Fig. 2

a view of a longitudinal section through two stacked cups according to the invention according to a second embodiment,

Fig. 3a to 3d

Sectional views of longitudinal sections through two inventive cup according to a third, fourth, fifth or sixth embodiment,

Fig. 4

3 is a sectional view of a longitudinal section through a cup according to the invention according to a seventh embodiment,

Fig. 5

2 a section-wise view of a longitudinal section through a cup according to the invention according to an eighth embodiment,

Fig. 6

a sectional view of a longitudinal section through a cup according to the invention, according to a ninth embodiment, wherein an externally attached to the cup wall device for enhancing the indentation is provided, which is shown here as a ring, and

Fig. 7a and 7b

Sectional views of longitudinal sections through cups according to the invention in accordance with a tenth or eleventh embodiment, wherein a device attached from the inside to the cup jacket for reinforcing the indentation is provided, shown here as a ring.

The presentation of the Fig. 1 shows a double-walled, heat-insulating cup 10, which has an inner cup 12 and an outer shell 14. The inner cup 12 consists of a substantially cone-shaped shell 16 and a bottom 18, wherein the shell 16 and the bottom 18 are connected to form a frame 20 in a liquid-tight manner. The frame 20 is formed by a U-shaped envelope of the shell 16, wherein in this U-shaped envelope an approximately vertically angled edge of the cup-shaped bottom 18 is inserted. After insertion, the frame 20 is formed by gluing, pressing and / or sealing the jacket 16 to the bottom 18.

The outer shell 14 is pushed sleeve-shaped and also has a cone shape, a lower end of the outer shell 14 is formed by a bottom roller 22. The bottom roller 22 of the outer shell 14 is located on the inner cup 12 below the horizontal An upper end of the outer jacket 14 abuts against the inner cup 12 adjacent to a mouth roll 24 forming the upper end of the cup 10.

On the jacket 16 of the inner cup 12 is approximately at the level of a quarter of the interior of the inner cup 12, a molding in the form of a projecting into the interior into a shoulder-shaped shoulder 26 is provided. The shoulder 26 is formed by the fact that seen from the opening defined by the mouth roll 24 of the cup 10 in the direction of the bottom 18, the diameter of the interior decreases abruptly, in which the jacket 16 approximately horizontally in the direction of a central longitudinal axis 28 of the cup is bent to. Subsequently, the jacket 16 extends for a portion parallel to the central longitudinal axis 28, and then in a final, reaching to the lower end of the cup 10 section, to follow the cone shape again. The shoulder 26 thereby projects into the interior of the cup 10. To stabilize the indentation in the form of the shoulder 26, an adhesive bead or adhesive track 30 is provided, which is arranged below the approximately horizontally extending portion of the shoulder 26 on an outer side of the jacket 16. As a result, the adhesive trace 30 does not come into contact with a liquid which is filled into the interior of the cup 10. As Fig. 1 can be seen, the adhesive trace 30 is introduced into the approximately rectangular groove, which is formed on the inner side of the outer side of the shell 16 by the shoulder 26 shouldered.

The shoulder 26 is provided as a means for holding a similar cup when stacking a plurality of cups. Specifically, the bottom roll 22 of another similar cup is supported on the shoulder 26 when two cups are stacked. The adhesive trace 30 reinforces the indentation in the form of the shoulder 26 even under heavy load. Even with numerous stacked cups and jerky settling several stacked cups it does not come to jam the cups together.

The presentation of the Fig. 2 shows a longitudinal section of two stacked cups 32a, 32b according to a second preferred embodiment of the invention. The cups 32a, 32b are stacked and each formed as a single-walled cup. However, it is readily possible, the two cups 32a, 32b each with an insulating outer jacket on the type of outer sheath of Fig. 1 to provide, since even in the stacked state between the two cups 32a, 32b is enough space available.

As Fig. 2 can be seen, a jacket 34 of the cup 32a, 32b is provided in its lower half with a depression 36 in the form of a protruding into the interior shoulder-shaped shoulder. The jacket 34 and a bottom 38 of the cups 32a, 32b are each connected liquid-tightly to form a frame 40. The frame 40 is widened conically outward. In the stacked state of the two cups 32a, 32b is thereby the lower edge of the cup and thus the lower, free end of the frame 40 on the indentation 36. In order to reinforce this indentation 36, an adhesive trace 42 is applied to an outside of the jacket 34 in the region of the groove formed by the indentation 36. The adhesive trace 42 is applied around the entire circumference of the jacket 34. The adhesive track 42 reinforces the indentation 36 in such a way that, even under strong pressure on the upper cup 32a, the shoulder-shaped indentation 36 possibly deforms, but in any case prevents the cup from expanding in the region of the indentation 36 and the upper cup 32a thereby further slipping into the lower cup 32b. Rather, the shoulder-shaped indentation 36 will possibly deform so that the portion on which the frame of the upper cup 32a rests, in the Horizontal bends. However, jamming of the two cups 32a, 32b is not to be feared.

The indentation 36 is formed shoulder-shaped and thereby represents a reduction in the cross section of the jacket 34. The indentation 36 can thereby act in the direction of the central axis 28 of the cup forces, ie forces acting when stacking the cups 32a, 32b record. The indentation 36 is shoulder-shaped and protrudes into the interior of the cup. The frame 40, on which the inner space bounding jacket 34 is crimped around the pot-shaped deep-drawn bottom and sealed liquid-tight, is widened and thereby constitutes a means for holding a similar cup, which cooperates with the shoulder-shaped indentation 36 when stacking two cups.

The presentation of the Fig. 3a shows a sectional view of a longitudinal section through two stacked cups 46a, 46b, according to another embodiment of the invention. The inner cups 48 of the cups 46a, 46b are each provided with a recess in the form of a shoulder 50 projecting into the interior. On an outside of the jacket 48, an adhesive track 52 is provided for stabilizing the shoulder 50 in the groove formed by the shoulder 50. An outer jacket 54 of the cups 46a, 46b is turned over in its lower region by 180 ° and the folded free end is then in turn bent towards the inner cup and rests on the adhesive track 52. The glue trace 52 can thus perform a dual function by not only stabilizing the shoulder 50, but at the same time providing a secure connection of the outer sheath 54 to the sheath 48 of the inner cup. The outer jacket 54 is in the illustrated embodiment, both below a bottom of the jacket 48 and at the folded end of the adhesive track 52nd

The presentation of the Fig. 3b shows a sectional view of a longitudinal section through two nested cup according to the invention 56a, 56b according to a further embodiment of the invention. In contrast to the cups 46a, 46b Fig. 3a only the envelope of the respective outer shell 58 is designed differently. The lower end of the outer jacket 58 is turned over by 180 °, this envelope is not pressed flat, but runs with a small radius. The folded free end is then bent back in the direction of the inner cup and rests on the adhesive track 52.

The presentation of the Fig. 3c shows a sectional view of a longitudinal section through two stacked, inventive cup 60a, 60b. The cups 60a, 60b are different from those in FIG Fig. 3a and 3b The outer shell 62 is folded in its lower end and slightly bent inwards, so that the lower end of the outer shell below the bottom of the cups 60a, 60b rests on the frame by means of the mantle and the bottom are connected together in a liquid-tight manner. The folded part at the lower end of the outer shell 62 is pressed flat, so that the folded part rests over its entire surface on the inside of the outer shell.

The presentation of the Fig. 3d shows a longitudinal section through two further cups 64a, 64b according to the invention. The cups 64a, 64b differ from those in the Fig. 3a to 3c The outer jacket 66 is folded over at its lower end by slightly less than 180 ° so that the folded part of the outer jacket rests flat on the outside of the shell of the cup 64a, 64b. The umgeschlagerie part 68 of the outer shell 66 thereby forms a ring, the below the indentation 70 rests on the outside of the shell. The end of the folded part 68 extends up to the indentation 70 and the upper edge of the folded part 68 abuts the adhesive track 72. As a result of the folding over of the outer jacket 66, an additional, separate reinforcement is created by means of which the indentation 70 as well as the portion 73 of the cup lying between the indentation and the bottom can be reinforced.

The presentation of the Fig. 4 shows a section-wise longitudinal section through another cup 74 according to the invention. The cup 74 has an inner cup with a jacket 76 and an insulating outer jacket 78. The shell 76 is provided below a mouth roll 80 with a indentation 82, wherein the indentation 82 is formed as outwardly, away from the interior of the cup 74 away bead or groove. The indentation 82 serves to ensure a precisely defined distance between the outer jacket 78 and the jacket 76 and thereby good insulation properties. The indentation 82 is reinforced by means of an adhesive trace 84, which in the illustration of Fig. 4 As can be seen, by means of the adhesive track 84, on the one hand, the indentation 82 is stabilized and, on the other hand, the outer jacket 78 is simultaneously connected to the jacket 76.

The presentation of the Fig. 5 shows a further cup 86 according to the invention according to a further embodiment of the invention. The cup 86 has an inner cup, which is formed from a jacket 88 and a bottom 90, which are connected to each other in a fluid-tight manner in the region of a downwardly expanded frame. Next, the cup 86 has an insulating outer jacket 92 which rests against the jacket 88 below the horizontally extending portion of the bottom 90. A lower end of the outer jacket 92 is used to unstack the cup 86 by placing the lower end of the outer jacket 92 in the stacked state of two cups on a bead or groove-shaped indentation 94 in the jacket 88 rests. The indentation 94 is approximately semicircular or circular segment-shaped and extends into the interior of the cup 86 inside. The indentation 94 is produced for example by means of a rotating roller. In order to stabilize the indentation 94, the indentation formed on the outside of the jacket 88 by the indentation 94 is filled up by means of an adhesive trace 96. The adhesive track 96 thereby stabilizes the indentation 94, so that when stacking a plurality of cups, the outer jacket can not slip beyond the indentation 94. As a result, numerous cups can be stacked without a Verklermmen this several cups is to be feared.

The presentation of the Fig. 6 shows a further cup 98 according to the invention in a longitudinal section shown in sections. The cup 98 has an inner cup of a shell 100 and a bottom 102, which are liquid-tightly connected to form a widened frame 104. The bottom 102 is reversely cup-shaped overall and is inserted with its folded edge in a U-shaped envelope of the shell 100, so that then the peripheral frame 104 is formed. The frame 104 is conical and widens towards the lower end of the cup. The jacket 100 is provided with a recess in the form of a reentrant shoulder 106, wherein the inner diameter of the cup 98 is suddenly reduced by the shoulder 106. In the stacked state of several cups, the lower end of the frame 104 rests on the shoulder 106.

In order to stabilize the shoulder 106, below the shoulder 106 there is provided a reinforcing ring 108 made of plastic, which is pushed onto an outer side of the jacket 100 and bears against an underside of the shoulder 106. The reinforcing ring 108 remains in the finished Condition of the cup 98 on the jacket 100. After pushing the reinforcing ring 108, an insulating outer jacket 110 can be pushed onto the inner cup and attached to the inner cup.

The presentation of the Fig. 7a shows a further cup 112 according to the invention, which is provided with a jacket 114 and a bottom 116. The jacket 114 is provided with a groove-shaped and projecting into the interior of the cup 112 indentation 118. To stabilize the indentation 118, a plastic ring 120 is provided, which is inserted from above into the interior of the cup 112 and rests on the upper portion of the indentation 118. The plastic ring 120 can be used, for example, to allow a stacking of several cups. However, the plastic ring 120 can also be used, for example, to arrange further parts which do not belong directly to the cup, for example a clipped lid, a glued-on membrane or a plate with a filling opening.

The presentation of the Fig. 7b shows a further inventive cup 122. In contrast to the cup 112 of Fig. 7a the cup 122 is provided with a recess 124 in the form of a re-entrant shoulder. Below the shoulder 124, a jacket 126 of the cup extends substantially parallel to a central axis of the cup, only to pass again immediately above a bottom 128 in a cone shape. Into the interior of the cup, a plastic ring 130 is inserted, which is provided with a circumferential, recessed heel which rests on the shoulder 124 and thereby reinforced. The reinforcing ring 130 may, but need not, be bonded to the shell 126. Due to the conical shape of the shell 126 above the shoulder 124, the reinforcing ring 130 can be held securely on the cup 122 even without adhesive. The reinforcing ring 130 may be used to safely stack a plurality of cups, but may for example, be used for arranging membranes, lids or the like.

It should be expressly pointed out that the different embodiments of the outer jacket and other design means of the cup as the indentation can be combined as desired with each other, and are not restricted to the illustrated variants, the following claims define the scope of the invention. It should also be noted that the illustrations are not to scale.

Claims (14)

1. A cup made of a paper material comprising a fillable interior formed by an at least partially conical shell (16; 34; 48; 76; 88; 100; 114; 126) and a bottom (18; 38; 90; 102; 116; 128), where the bottom (18; 38; 90; 102; 116; 128) is joined to said shell (16; 34; 48; 76; 88; 100; 114; 126) in the region of the lower end of the interior in a substantially liquid-tight manner, and wherein the shell (16; 34; 48; 76; 88; 100; 114; 126) delimiting the interior comprises at least one deforming feature (26; 36; 50; 70; 82; 94; 106; 118; 124), characterized in that in the region of said at least one deforming feature there is disposed a reinforcement (30; 42; 52; 72; 84; 96; 108; 120; 130) extending exclusively in the region of the deforming feature and resting against the deforming feature, for the purpose of stabilizing said deforming feature.
2. The cup according to claim 1, characterized in that said reinforcement is in the form of a coating applied to said shell.
3. The cup according to claim 1 or claim 2, characterized in that said reinforcement is in the form of an adhesive fillet (30; 42; 52; 72; 84; 96) applied to said shell.
4. The cup according to claim 3, characterized in that the adhesive fillet (30; 42; 52; 72; 84; 96) is applied for the purpose of stabilizing said deforming feature over the entire periphery of said shell.
5. The cup according to any one of the claims 3 to 4, characterized in that an outer shell (54; 58; 62; 66, 78) is provided, which outer shell (54; 58; 62; 66, 78) is joined by means of said adhesive fillet (52; 72; 84) to the shell (48; 76) and/or the bottom.
6. The cup according to claim 1, characterized in that said reinforcement is in the form of a separate reinforcing component, more particularly a reinforcing ring (108; 120; 130).
7. The cup according to any one of the preceding claims, characterized in that said deforming feature is in the form of a means for supporting a cup of the same type in a stack comprising a plurality of said cups.
8. The cup according to claim 7, characterized in that said bottom wall (38) and said shell (34) form a bottom edge frame (40; 46b; 56b; 60b; 64b; 104) in the region of said liquid-tight joint, and said deforming feature is in the form of a means for supporting said bottom edge frame (40; 46a; 56a; 60a; 64a; 104) of a cup of the same type in the stacked state of a plurality of said cups.
9. The cup according to claim 7, characterized in that said cup has an outer shell (14) at least partially surrounding said shell (16), and said deforming feature is in the form of a means for supporting said outer shell of a cup of the same type in the stacked state of a plurality of cups.
10. The cup according to any one of the preceding claims, characterized in that said deforming feature forms an at least partial cross-sectional constriction of the interior of said cup, as viewed from an open end of said cup toward its bottom wall, said reinforcement being disposed directly downstream of said cross-sectional constriction.
11. The cup according to claim 10, characterized in that said reinforcement on an external surface of said shell facing away from the interior rests against the section of said deforming feature forming said cross-sectional constriction.
12. A method for the production of a cup of paper material, characterized by the following steps:

    joining a conical shell (16; 34; 48; 76; 88; 100; 114; 126) to a bottom (18; 38; 90; 102; 116; 128) in a substantially liquid-tight manner, incorporating at least one deforming feature in the shell (16; 34; 48; 76; 88; 100; 114; 126), and providing a reinforcement (30; 42; 52; 72; 84; 96; 108; 120; 130) in the region of said at least one deforming feature for stabilizing the at least one deforming feature, said reinforcement extending exclusively in the region of the deforming feature and resting against said deforming feature.
13. The method according to claim 12, characterized by the provision of said reinforcement on an exterior surface of said shell facing away from the interior of the cup.
14. The method according to claim 12 or 13, characterized by applying an adhesive fillet (30; 42; 52; 72; 84; 96) in the region of said deforming feature, for the purpose of stabilizing said at least one deforming feature.

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