EP2727856A2 - Insulated cup and method for manufacturing an insulated cup - Google Patents

Abstract

The insulating cup (12,14) has a liquid-tight inner cup (16) and an outer sleeve (18) enveloping the inner cup in sections. The outer sleeve comprises a blank made of a paper material and a two-dimensional insulating material applied on the paper material. The two-dimensional insulating material is applied only on a partial area of the blank, where an overlapping area (20) of the blank, in which the outer sleeve has a material thickness twice the thickness of the paper material, is not provided with the insulating material. An independent claim is included for a method for manufacturing an insulating cup.

Description

The invention relates to an insulating cup having a substantially liquid-tight inner cup and an inner shell at least partially enveloping outer shell, wherein the outer shell has a blank of a paper material and a sheet applied to the paper material insulating material. The invention also relates to a method for producing an insulating cup with an inner cup and an outer shell surrounding the inner cup at least in sections, wherein the outer shell is formed from a flat blank of a paper material and a sheet-like insulating material applied to the paper material.

With the invention, an improved insulating cup and an improved method for producing a Isolierbechers be provided.

According to the invention for this purpose, an insulating cup is provided with a substantially liquid-tight inner cup and the inner cup at least partially enveloping outer shell, wherein the outer shell of a blank of a paper material and on the Paper material applied flat insulating material, wherein the insulating material is applied only to a portion of the blank, wherein an overlap region of the blank in which the outer sheath has at least twice the material thickness of the paper material is not provided with the insulating material.

By leaving an overlapping area of the blank in which the outer sheath has at least twice the material thickness of the paper material free and not provided with an insulating layer, the paper material of the outer sheath can be reliably connected to each other despite provision of the insulating layer, and the insulating layer or material can also be very thick, without an excessively increased wall thickness of the outer shell would occur in the overlapping area. Surprisingly, it has been found that even if not only the overlap area, but a larger area are released and not provided with the insulating material, the insulating properties of the cup are only slightly affected. The release of a larger area than the actual overlapping area may also be advantageous in that any tolerances in the assembly of the blank to the outer shell can be easily compensated.

In a further development of the invention, the flat insulating material consists of a foam material.

In a further development of the invention, the flat insulating material consists of wood-like material, in particular wood veneer.

In a further development of the invention, the flat insulating material consists of natural fibers, in particular cotton fibers, containing material.

In a further development of the invention, the inner cup has a conical shape and the blank has a circular segment-like shape.

In a further development of the invention, the side edges of the blank are arranged perpendicular to the curved upper edge and lower edge of the blank, wherein the approximately rectangular overlap region of the blank remains free.

In a further development of the invention, in addition to the rectangular overlap area, an approximately triangular area which widens from the shorter lower edge to the longer upper edge remains free.

In this way, a free of insulating material area, which can be used to compensate for tolerances. In addition, the punching of the blanks of strip-shaped material is much easier if the side edges of the insulating material can be parallel to each other.

In a further development of the invention, the planar insulating material rests directly on an outer wall of the inner cup.

In a further development of the invention, the planar insulating material is arranged at least in sections at a distance from the outer wall of the inner cup.

In development of the invention, the inner cup has at least one inwardly projecting projection in the region of its lower half, wherein the projection forms a stop surface for a lower edge of the outer shell of a similar, inserted into the inner cup insulating cup.

Since the outer jacket consists of a paper material and an insulating layer applied to the paper material, the outer jacket has a greater thickness than a simple paper layer. The lower edge of the outer shell can thereby be used directly for destacking on a projection of the inner shell.

In a further development of the invention, the outer shell is in the region of its lower edge flat against an outer wall of the inner cup.

In this way, the lower edge used for stacking can be made very stable because it can be supported on the outer wall of the inner cup surface. In the region of its lower edge, the outer cup may be materially connected to the outer wall of the inner cup in order to stabilize the lower edge used for stacking.

The problem underlying the invention is also solved by a method for producing a Isolierbechers with an inner cup and the inner cup at least partially enveloping outer shell, wherein the outer shell is formed from a flat blank of a paper material and a sheet applied to the paper material insulating material in which the application of the sheet-like insulating material is provided on a portion of the sheet of paper material and producing the blank of the sheet paper material, wherein at least one overlap region in which the outer shell has at least twice the material thickness of the paper material, released on the blank of paper material and not with the Insulating material is occupied.

Surprisingly, by simply leaving at least the overlapping area free, it is possible to substantially improve a method for producing an insulating cup. Although the application of the insulating material slightly more expensive than the full-surface application of an insulating material, since at least the overlap area must be kept free, when producing the outer sheath by connecting the paper material in the overlapping area, the production of the outer sheath but much easier.

In a further development of the invention, the application of the sheet-like insulating material to a portion of the sheet of paper material prior to the production of a blank for the outer shell from the partially provided with the insulating paper material.

In this way, insulating material can first be applied over a large area to a paper material, and only then are the blanks produced for the production of the outer jacket from the then existing laminate, for example, punched or cut out.

In a further development of the invention, the application of a flat, present in the form of a strip of material insulating material is provided on a present in the form of a strip of material paper material, seen in the longitudinal direction of the strip of material at least a rectangular or strip-shaped area of the paper material remains free, and only then takes place Cutting or punching the blank for the outer jacket.

In this way, for example, the insulating material and the paper material can be supplied from one roll and by cleverly arranging the material strip of insulating material on the paper material and subsequently the appropriate arrangement of the blank on this laminate, it is possible with very little effort a blank for the production form the outer shell, in which at least the overlapping region of insulating material is free.

In a development of the invention, the cutting or punching out of the blank for the outer sheath takes place in such a way that one side edge of the blanks, adjoined by the overlapping region, is not arranged parallel to a first side edge of the material strip.

In this way, in addition to the approximately rectangular overlap area, an approximately triangular area of the paper material remains free of insulating material. This triangular area can be used to compensate for tolerances, but above all, the handling of punched blanks is simplified in that they do not need to be rotated or repositioned for further processing, but further processed in a direction that is parallel to the feed direction of the strip of material can be.

In a further development of the invention, the cutting or punching of the blank for the outer shell takes place in such a way that a side edge of the blank, adjoined by the overlapping region, is arranged parallel to a first side edge of the material strip.

In this way, it is possible to actually keep only the overlapping area of insulating material. Thus, the insulating material may extend substantially completely around the circumference of the inner cup and between the end edges of the insulating material remains at most a narrow, insignificant for the insulating properties, gap free.

Fig. 1

eine teilweise geschnittene Seitenansicht zweier ineinander gestapelter Isolierbecher gemäß einer ersten bevorzugten Ausführungsform der Erfindung,

Fig. 2

eine Schnittansicht eines der Isolierbecher der Fig. 1,

Fig. 3

eine Ansicht auf die Schnittebene III-III in Fig. 2,

Fig. 4

eine vergrößere Darstellung der Einzelheit IV in Fig. 2,

Fig. 5

eine Draufsicht auf einen Zuschnitt zur Herstellung des Außenmantels der Isolierbecher in Fig. 1,

Fig. 6

eine Draufsicht auf ein Laminat aus Papiermaterial und Isoliermaterial mit darauf angedeuteten Umrissen von Segmenten zur Herstellung der Außenmäntel der Isolierbecher der Fig. 1,

Fig. 7

eine Draufsicht auf ein Laminat aus Isoliermaterial und Papiermaterial mit darauf angedeuteten Zuschnitten zum Herstellen der Außenmäntel der Isolierbecher der Fig. 1 und ein zum Abtransport der zugeschnittenen Segmente vorgesehenes Transportband,

Fig. 8

eine Schnittansicht eines erfindungsgemäßen Isolierbechers gemäß einer weiteren Ausführungsform der Erfindung,

Fig. 9

eine Schnittansicht zweier ineinander gestapelter Isolierbecher gemäß einer weiteren Ausführungsform der Erfindung,

Fig. 10

eine Darstellung der Einzelheit X in Fig. 9,

Fig. 11

eine teilweise geschnittene Seitenansicht zweier Isolierbecher gemäß Fig. 9,

Fig. 12

eine vergrößerte Darstellung der Einzelheit XII in Fig. 11,

Fig. 13

eine Schnittansicht zweier ineinander gestapelter Isolierbecher gemäß einer weiteren Ausführungsform der Erfindung,

Fig. 14

eine Darstellung der Einzelheit XIV der Fig. 13,

Fig. 15

eine teilweise geschnittene Ansicht zweier ineinander gestapelter Isolierbecher gemäß einer weiteren Ausführungsform der Erfindung,

Fig. 16

eine vergrößerte Darstellung der Einzelheit XVI in Fig. 15 und

Fig. 17

eine Schnittansicht eines erfindungsgemäßen Isolierbechers gemäß einer weiteren Ausführungsform der Erfindung.

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 in the drawings can be in any way with each other combine without exceeding the scope of the invention. In the drawings show:

Fig. 1

a partially sectioned side view of two nested stacked insulating cup according to a first preferred embodiment of the invention,

Fig. 2

a sectional view of the insulating cup of Fig. 1 .

Fig. 3

a view on the section plane III-III in Fig. 2 .

Fig. 4

an enlarged view of detail IV in Fig. 2 .

Fig. 5

a plan view of a blank for producing the outer jacket of the insulating cup in Fig. 1 .

Fig. 6

a plan view of a laminate of paper material and insulating material with implied outlines of segments for the production of the outer shells of the insulating cup Fig. 1 .

Fig. 7

a plan view of a laminate of insulating material and paper material with implied blanks for producing the outer shells of the insulating cup Fig. 1 and a conveyor belt provided for transporting the cut segments,

Fig. 8

a sectional view of a Isolierbechers invention according to a further embodiment of the invention,

Fig. 9

a sectional view of two stacked insulating cup according to a further embodiment of the invention,

Fig. 10

a representation of the detail X in Fig. 9 .

Fig. 11

a partially sectioned side view of two Isolierbecher according to Fig. 9 .

Fig. 12

an enlarged view of the detail XII in Fig. 11 .

Fig. 13

a sectional view of two stacked insulating cup according to a further embodiment of the invention,

Fig. 14

a representation of the detail XIV the Fig. 13 .

Fig. 15

a partially sectioned view of two nestled insulating cup according to a further embodiment of the invention,

Fig. 16

an enlarged view of detail XVI in Fig. 15 and

Fig. 17

a sectional view of a Isolierbechers invention according to a further embodiment of the invention.

In the presentation of the Fig. 1 are two nested in the invention insulating cups 12 and 14 can be seen, which are identical to each other. Each of the insulating cups 12, 14 has an inner cup 16 made of paper material and an outer shell 18. The inner cup 16 has an upper mouth roll 24 and has a frusto-conical shape. The outer shell 18 is also frustoconical and sits with its inside flat on the outside of the inner cup 16. The outer jacket 18 ends shortly below the upper mouth roll 24 of the inner cup 16 and just above the lower edge of the inner cup 16, which is formed by the lower edge of a peripheral bottom frame 28.

The outer jacket 18 is wound from a blank into its truncated cone shape with the ends of the blank joined in a rectangular overlap region 20, e.g. glued or sealed, using cold glue, hot melt or hot melt, heat sealable or heat sealable film coatings.

The presentation of the Fig. 2 shows a view of a current through a central longitudinal axis 22 of the Isolierbechers 12 cutting plane. Evident is the upper mouth roll 24 of the inner cup 16, the bottom 26 and the peripheral bottom frame 28, with the bottom 26 and the frusto-conical wall of the inner cup 16 are liquid-tightly interconnected.

The presentation of the Fig. 4 shows the detail IV Fig. 2 and makes the formation of the bottom frame 28 more accurately.

The structure of the outer jacket 18 is in the illustration of Fig. 4 to recognize. The outer jacket 18 consists of a blank of a sheet of paper material 30, which is provided on its inner side with an insulating layer in the form of a sheet-like insulating material 32, which in turn rests flat on the outside of the inner cup 16. The outer sheath 18 may for example be pushed onto the inner cup 16, but may also be partially or completely glued to this.

The presentation of the Fig. 3 shows a schematic sectional view of the sectional plane III-III in Fig. 2 , Evident is the circumferential wall of the inner cup 16, on the outside of the outer shell 18 is applied, for example, is pushed. The outer jacket 18 consists of a wound blank from the outer flat Paper material 30 and arranged between the inner cup 16 and the paper material 30 sheet insulating material 32, for example, a foam layer. As Fig. 3 can be seen, in the overlap region 20, the inside of the outer portion of the paper material 30 is not provided with the sheet-like insulating material 32. As a result, the outer section 30a of the paper material 30 in the overlapping area 20 can be applied directly to the inner section 30b of the paper material 30 in the overlapping area 20, and the two sections 30a, 30b can be glued together or sealed to one another, for example.

As Fig. 3 As can be seen, ends the insulating layer in the circumferential direction before the overlap region 20, so that between the inner cup 16 and the outer paper layer 30, a gap 34 is formed adjacent to the overlap region 20. This gap 34 is formed by the fact that not only the overlap region 20, but also still another area remains free of the insulating layer. The gap 34 does not deteriorate the insulating properties of the insulating cup 12 or only insignificantly and can also be used to compensate for tolerances, which may result in the manufacture of the outer jacket 18.

The presentation of the Fig. 5 shows a flat blank 36, which is used to produce the outer jacket 18. The blank 36 has the shape of a circular ring segment and can be wound into the truncated cone shape of the outer shell 18. To produce the outer jacket 18, the flat blank 36 is wound, for example, around a frustum-shaped mandrel or wound directly around the inner cup 16. The indicated by a dashed line rectangular overlap region 20 is with his, in Fig. 5 the viewer facing the inside on the outside of the opposite Side edge of the sheet blank 36 placed and connected to this outside, such as Fig. 3 can be seen.

In addition to the approximately rectangular overlap region 20 is how Fig. 5 can be seen, nor a second, approximately triangular area 38 is not covered with the insulating material 32, so that in the overlap region 20 and in the area 38, the paper material 30 remains free of the insulating layer 32.

This causes the in Fig. 3 indicated gap 34 seen over the height of the cup changes its width. At the lower end of the outer sheath 18, the gap 34 would have a width of approximately zero and would gradually expand toward the upper end of the outer sheath 18, that is, toward its larger diameter. As has already been stated, however, the gap 34 does not worsen the insulation properties of the insulating cup 12, or does so only insignificantly.

Based on the presentation of the Fig. 6 It can be seen why the provision of the approximately triangular area 38 next to the overlapping area 20 considerably facilitates the production of the flat blanks 36. To produce the segments, first a cardboard or paper strip 40 is unwound from a roll, and a foam strip 42 also unwound from a roll is then laminated onto the paper strip 40, for example glued on. Instead of the foam strip 42, any other sheet insulating material may be used. However, the foam strip 42 is less wide than the paper strip 40, so that a strip-shaped region 44 of the laminate of paper strips 40 and foam strips 42 is formed in which no foam rests on the paper strip 40.

The blanks 36 are now punched out of this laminate so that the straight side edges at the two ends of the blanks respectively are arranged at the same angle to the side edges of the laminate and the blanks 36 are thus punched or cut centrally from the laminate. The in the presentation of the Fig. 6 Although the right side edge of the foam strip 42 extends parallel to the right side edge 48 of the paper strip 40, but at a distance from this side edge 48. After punching out of the blanks 36 thus not only remains only the overlap region 20 of foam free, but also the approximately triangular area 38th The blanks 36 can, however, be punched out in the middle of the paper strip 40 and thereby also be conveyed away after punching out parallel to the side edges 48, 46. This greatly facilitates the mechanical production of the insulating cup 12 and simplifies the required machine construction.

The presentation of the Fig. 7 shows a schematic plan view of the laminate of the paper stiffener 40 and the foam strip 42, wherein the paper stiffener 40 and the foam strip 42 are withdrawn again in a manner not shown from a roll and flat connected to each other. Between the in Fig. 7 right side edge 46 of the foam web 42 and the in Fig. 7 right side edge 48 of the paper web 40 remains again a region 44 in which the paper web 40 is not covered with the foam strip 42. The width of the region 44 corresponds to the embodiment of the Fig. 7 but the width of the overlapping region 20 of the blanks 36. For this purpose, the blanks 36 are punched out of the laminate so that their side edge adjacent to the overlapping region 20 coincides with the side edge 48 of the paper web 40. As the representation of Fig. 7 can be seen, the blanks 36 may not be punched out of the middle of the laminate and would then have to be rotated for further processing if necessary, in order then to be transported away with a conveyor belt 50 and optionally grippers. But this can be solved in an advantageous manner that the Paper stiffener 40 and the foam strip 42 is fed obliquely to the conveyor belt 50 and the blanks 36 are then punched or cut so that its axis of symmetry is parallel to a conveying direction 52 of the conveyor belt 50.

The presentation of the Fig. 8 shows a sectional view of a Isolierbechers 62 according to the invention according to a further preferred embodiment of the invention.

In contrast to the insulating cup 12 according to Fig. 2 an outer sheath 64 is not flush with the outer wall of the inner cup 66 over its entire height. Rather, the inner cup 66 in its upper region on an inwardly projecting shoulder 68. The outer sheath 64, which again consists of a laminate of an outer paper layer and an inner insulating layer, thereby lies flat against the inner cup 66 only in a region between the upper mouth roll and the upper shoulder 68 and below the upper shoulder 68 decreases a distance between outer shell 64 and inner cup 66 gradually until the outer shell 64 rests flat against the inner cup 66 in the region of its lower end.

The presentation of the Fig. 9 shows a sectional view of two stacked insulating cup 72 according to another embodiment of the invention, and the illustration of Fig. 10 shows the detail X Fig. 9 ,

The insulating cups 72 each have an outer jacket 74 and an inner cup 76. The inner cup 76 is provided just above its bottom with an inwardly projecting shoulder 78. The insulating jacket 74 rests flat against the outside of the inner cup 76, with the exception of the region of the shoulder 78 and a cylindrical region 80 arranged below the shoulder 78. The shoulder 78 serves for stacking a plurality of stacked insulating cups 72, and a lower edge of the outer jacket 74 is supported in the stacked state on the shoulder 78 of the respective underlying cup from. Since the outer jacket 74 above the shoulder 78 and below the cylindrical portion 80, in other words below the shoulder 78 rests flat on the inner cup 76 and advantageously above and below the shoulder 78 connected to the inner cup 76, for example glued, the outer shell 74 stiffen the shoulder 78, so that numerous insulating cup 12 can be stacked into each other without problems, without the shoulder 78 yields and without the insulating cup 72 stuck together.

The presentation of the Fig. 11 of the Fig. 11 shows the insulating cup 72 of Fig. 9 in a partially sectioned side view.

The representation of the Fig. 12 It can be seen that the outer jacket 74 consists of an outer layer of paper material 30 and an inner layer of insulating material 32 and that the insulating material 32 above and below the shoulder 78 on the inner cup 76 rests flat on the outside of the inner cup 76. Further, it can be seen that the lower edge of the outer shell 74 of the upper cup rests on the shoulder 78 of the lower cup and thereby prevents the upper cup from slipping too far into the lower cup and thereby wedging the two stacked insulating cups 72 into one another ,

The presentation of the Fig. 13 and the Fig. 14 shows a sectional view of two nested stacked insulating cup according to another preferred embodiment of the invention. The insulating cups 82 each have an outer sheath 84 of paper material and inner insulating layer and an inner cup 86. The outer sheath 84 has a slightly different, larger cone angle than the inner cup 86 and lies in the area below the upper mouth roll flat on the inner cup 86 at. In the course of the extension of the inner cup and the outer shell down then increases the distance between outer casing 84 and inner cup 86. Above the bottom of the inner cup 86 is provided with an inwardly projecting shoulder 88, to which, towards the bottom and the lower edge of the inner cup 86, a conically widening portion 90 connects. Also, the circumferential bottom frame of the inner cup 86 is issued slightly outward. The lower edge of the bottom frame of the respective upper cup can thereby be supported on the shoulder 88 on the inner cup 86 of the respective lower cup, thereby preventing the two nesting cups 82 from being wedged into one another, even if numerous insulating cups 82 are stacked inside each other. As FIGS. 13 and 14 it can be seen, the respective outer jacket 84 of the Isolierbecher 82 ends below the bottom.

The representations of the FIGS. 15 and 16 show respectively stacked insulation cup 92 according to another preferred embodiment of the invention. The insulating cup 92 each have an outer jacket 94 and an inner cup 96, wherein, as Fig. 16 it can be seen, the outer shells 94 are arranged with its lower edge approximately at the level of the bottom of the inner cup 96. The inner cups have, as based on the Isolierbecher 82 of FIGS. 13 and 14 has been explained, above its bottom an inwardly projecting shoulder 98 on and below the shoulder 98, the inner cup 96 widens again to the lower edge of the bottom frame. When stacking several cups can thereby support the lower edge of the bottom frame of the upper cup on the shoulder 98 of the respective lower cup. This prevents even with numerous stacked Isolierbechern 92 these jam together.

It should also be noted that the measure according to the invention that at least the overlapping area of the blank for the outer jacket 94 is kept free of the insulating material, the thickness of the outer jacket 94 is greater only in the overlapping area by the material thickness of the outer paper material than in the remaining peripheral area. It is only the release according to the invention of at least the overlapping area that makes it possible at all to provide the insulating cups 92 with a thick outer jacket 94 provided with an insulating layer on its inner side and still provide the in Fig. 16 and Fig. 15 realized stackability of the cup to realize.

The presentation of the Fig. 17 shows an insulating cup 102 according to another preferred embodiment of the invention. The insulating cup 102 has an outer shell 104 of an outer paper layer and an inner insulating layer. Insulating cup 102 further includes an inner cup 106 provided with an upper, inwardly projecting shoulder 108 and just above the bottom with a lower, inwardly projecting shoulder 110 in its upper portion, below its upper mouth roll. The outer jacket 104 lies flat against the inner cup 106 in a region between the upper mouth roll and the upper shoulder 108 and is then arranged at a constant distance from the inner cup 108 up to the lower shoulder 110. A lower edge of the outer shell 104 is folded over and flattened. As a result, the lower part of the sleeve is considerably reinforced. Insofar as it consists of a meltable material, the insulating layer can also be melted and sealed after being turned over. The outer jacket 104 is then sealed in this case in the region of the envelope to the inner cup 106. This significantly improves the stability of the sleeve, which is very advantageous especially for the later stacking of several cups. With thick insulating layers, the melting of the insulating layer significantly facilitates the turnover. One provided with the insulating layer Side of the envelope 104 then abuts on an outer side of the inner cup 106, partially above the bottom and in sections below the bottom of the inner cup 106. A lower edge 112 is disposed below the bottom of the inner cup 106 and can be stacked several cups on the lower shoulder 110 of the inner cup 106. This prevents a plurality of insulating cups 102 stacked one inside the other from jamming. The insulating cup 102 has extremely good insulating properties, since there is an air gap between the inner cup 106 and the outer shell 104 and, moreover, the insulating layer on the inside of the outer shell 104 also ensures good insulation. Even if the insulating cup 102 is compressed locally and thereby the outer shell 104 comes into abutment against the outer wall of the inner cup 106, the insulating layer on the inside of the outer shell 104 still provides for reliable insulation.

Claims (15)

An insulating cup having a substantially liquid-tight inner cup (16; 66; 76; 86; 96; 106) and an outer shell (14; 64; 74; 84; 94; 104), wherein the outer jacket (14; 64; 74; 84; 94; 104) has a blank made of a paper material and a flat insulating material (32) applied to the paper material, characterized in that the planar insulating material (32) only is applied to a portion of the blank (36), wherein an overlapping area of the blank (36), in which the outer shell (14; 64; 74; 84; 94; 104) has at least twice the material thickness of the paper material (30), not with the insulating material (32) is provided. Insulating cup according to claim 1, characterized in that the flat insulating material (32) consists of a foam material, of flat, wood-like material, in particular wood veneer or of a natural fibers, in particular cotton fibers containing material. An insulating cup according to any one of the preceding claims, characterized in that the inner cup (16; 66; 76; 86; 96; 106) has a frusto-conical shape and the blank (36) has a circular segment shape, the side edges of the blank (36) being perpendicular to the curved upper edge and lower edge of the blank (36) are arranged, wherein the approximately rectangular overlap region (20) of the blank (36) remains free. Insulating cup according to claim 3, characterized in that in addition to the rectangular overlap region, an approximately triangular area (38), which widens from the shorter lower edge to the longer upper edge of the blank (36), remains free. Insulating cup according to one of the preceding claims, characterized in that the flat insulating material (32) rests directly on an outer wall of the inner cup (16). Insulating cup according to one of claims 1 to 5, characterized in that the sheet-like insulating material at least in sections at a distance from the outer wall of the inner cup (66; 76; 86; 96; 106) is arranged. Insulating cup according to one of the preceding claims, characterized in that the inner cup has at least one inwardly projecting projection (78, 110) in the region of its lower half, wherein the projection (78, 110) has a stop surface for a lower edge of the outer casing (74; ) of a similar, in the inner cup (76; 106) inserted Isolierbechers (72; 102) forms. Insulating cup according to claim 7, characterized in that the outer casing (74, 104) in the region of its lower edge (112) lies flat against an outer wall of the inner cup (76, 106). Insulating cup according to claim 7 or 8, characterized in that the outer casing (74, 104) is connected to the inner cup (76, 106) in the region of its lower edge by a material fit, in particular by sealing the insulating material (32). Method for producing an insulating cup having an inner cup (16; 66; 76; 86; 96; 106) and an outer shell (14; 64; 74; 84) enveloping the inner cup (16; 66; 76; 86; 96; 106) at least in sections 94; 104), the outer jacket (14; 64; 74; 84; 94; 104) being formed from a flat blank (36) of a paper material (30) and a planar insulating material (32) applied to the paper material (30) characterized in that the outer layer (14; 64; 74; 84; 94; 104) has at least twice the thickness of the material of the paper material (30) to which the blank (36) of paper material (30) is not provided with the insulating material (32). A method according to claim 10, characterized by applying the sheet-like insulating material (32) to the portion of the sheet of paper material (30) before producing the blank (36) for the outer jacket (14; 64; 74; 84; 94; 104) from the partially with the insulating material (32) provided with paper material (30). Method according to claim 11, characterized by applying the flat insulating material (32) present in the form of a strip of material to the paper material (30) present in the form of a strip of material, at least one rectangular area (44) of the paper material (30) being viewed in the longitudinal direction of the strip of material. remains free, and cutting or punching the blank (36) for the outer shell (14; 64; 74; 84; 94; 104). A method according to claim 12, characterized by removing the strips of material of the insulating material (32) and the paper material (30) of each one roll. A method according to claim 12 or 13, characterized by cutting or punching the blank (36) for the outer shell (14; 64; 74; 84; 94; 104) in a manner such that a side edge of the blank (36) to which the Overlap area (20) adjoins, not parallel to a first side edge of the strip of material is arranged. The method of claim 12 or 13, characterized by cutting or punching the blank (36) for the outer shell in a manner that a side edge of the blank (36), which adjoins the overlap region (20), parallel to a first side edge of the material strip is arranged.

Images