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EP2128041A1 - External cladding for a double-walled beaker and a method for producing the same - Google Patents

External cladding for a double-walled beaker and a method for producing the same Download PDF

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Publication number
EP2128041A1
EP2128041A1 EP09006369A EP09006369A EP2128041A1 EP 2128041 A1 EP2128041 A1 EP 2128041A1 EP 09006369 A EP09006369 A EP 09006369A EP 09006369 A EP09006369 A EP 09006369A EP 2128041 A1 EP2128041 A1 EP 2128041A1
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EP
European Patent Office
Prior art keywords
curl
blank
overlap
region
cup
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09006369A
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German (de)
French (fr)
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EP2128041B1 (en
Inventor
Uwe Messerschmid
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PTM Packaging Tools Machinery Pte Ltd
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PTM Packaging Tools Machinery Pte Ltd
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Priority to PL09006369T priority Critical patent/PL2128041T3/en
Publication of EP2128041A1 publication Critical patent/EP2128041A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
    • B65D81/3865—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation drinking cups or like containers
    • B65D81/3869—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation drinking cups or like containers formed with double walls, i.e. hollow

Definitions

  • the invention relates to an outer casing for a double-walled cup, which is formed from a blank of a paper material and provided with an inwardly directed curl, wherein the blank is sleeve-shaped connected by an overlap of two longitudinal edges of the blank.
  • the invention further relates to a method for producing such an outer sheath.
  • Outer shells of the type mentioned are used in practice in large numbers to improve the insulating properties of paper cups.
  • By attaching the outer shell to a cup of paper material creates a double-walled insulating cup having a substantially annular cavity between the inner shell and the outer shell of the cup, which gives the cup good insulating properties.
  • the curl can be designed in different ways.
  • a flat blank made of a paper material is connected in a sleeve-shaped manner by overlapping two longitudinal edges of the blank.
  • An inwardly directed curl is applied to the outer shell thus formed.
  • the prefabricated outer jacket is pushed in the axial direction on a likewise prefabricated cup and attached thereto. This creates a double-walled cup.
  • the invention has for its object to provide an outer jacket for a double-walled cup, which can not easily catch when pushed onto an inner cup.
  • the spring-back properties in this area are particularly great.
  • the inward curl on the outer shell in the region of the overlap is not exactly shaped, but has the tendency to rewind due to the rigidity of the paper material.
  • the inner diameter of the outer shell within the curl is thereby reduced in the region of the overlap and can lead to a snagging of the outer shell on the frame of the inner cup, when the outer jacket is pushed axially onto the inner cup.
  • gluing or sealing the curl in the region of the overlap is effectively prevented that the curl partially rises again due to the high stiffness in the overlap.
  • An entanglement of the outer shell when pushed onto the inner cup due to a too small clear inner diameter in the region of the curl can be effectively prevented.
  • Gluing or sealing the curl on the inside of the outer jacket is particularly advantageous if the curl has a region extending parallel to the outer jacket, in that the material of the curl lies flat against the inside of the outer jacket.
  • an uncoated paper material is used for the outer jacket, since the outer jacket does not come into contact with the liquid to be filled into the cup.
  • a glue trace is applied to a longitudinal edge of the blank before the blank is connected in a sleeve shape.
  • the curl is also glued inside the outer shell in such a case.
  • glue can be used.
  • the outer sheath may also be advantageous to produce the outer sheath from a paper material having a coating, for example made of polyethylene, at least on one side.
  • the curl can be sealed inside by heating the plastic coating inside the outer jacket. The sealing or gluing the curl can also be performed circumferentially along the entire circumference of the outer shell.
  • the blank at a longitudinal edge contains a recess which comes to lie in the region of the overlap.
  • the recess is designed so that when overlapping the two longitudinal edges of a part of the glue line is not covered.
  • the uncovered portion of the glue line is used in the formation of the inward curl for gluing the curl in the region of the overlap inside the outer shell.
  • the recess of the blank in the region of the overlap is preferably designed such that the curl in an area of the overlap only leads to a total thickness of the outer shell, which corresponds approximately to three times the material thickness of the blank.
  • the reduced overall thickness in the region of the overlap also reduces the risk of the outer casing becoming caught when pushed onto the inner cup.
  • An inventive outer jacket is particularly suitable for cups that have a substantially frusto-conical shape.
  • the outer sheath can accordingly also be conical.
  • the glued on the outer shell or sealed Einrollung is attached to the end of the outer shell, which has the smaller circumference.
  • an outer sheath according to the invention is not only suitable for cups made of paper material, but can also be used very advantageously as an outer sheath for cups of plastic material.
  • an outer sheath according to the invention is particularly suitable for an inner cup which has a widening on its frame, wherein a lower edge of the widening forms a standing surface for the cup.
  • an inner cup which has a widening on its frame, wherein a lower edge of the widening forms a standing surface for the cup.
  • For inner cups with flared frame pushing on an outer shell is particularly critical because the diameter surrounding the expansion can be the same size or even slightly larger than the inner diameter of the curl of the outer shell. Even with such inner cups can be effectively prevented with an outer jacket according to the invention snagging of the outer shell during axial pushing.
  • an outer jacket 1 for a double-walled cup 2 is shown.
  • the double-walled cup 2 is below with the help of FIG. 5 described in more detail.
  • the outer shell 1 is made of a paper material and has a sleeve-shaped, conical shape. At the end with the smaller circumference, an inwardly directed curl 3 is attached.
  • the outer shell 1 is formed from a blank 4 of paper material.
  • the flat blank 4 as starting material for the outer jacket 1 is in FIG. 3 shown.
  • the blank 4 has substantially the shape of a segment of a circular ring.
  • the blank has two longitudinal edges 5 and 6, which are connected to form an overlap 7 with each other, so that the sleeve-shaped outer shell 1 is formed.
  • a glue trace 8 is applied to the flat blank 4 at the longitudinal edge 6.
  • the glue trace 8 is applied to the side of the blank 4, which subsequently forms the inside 9 of the outer shell 1.
  • the flat blank 4 is wound after applying the glue trace 8 around a conical mandrel, not shown.
  • the longitudinal edge 6 with the glue trace 8 on the longitudinal edge. 5 placed and pressed so that the overlap 7 arises. Subsequently, the curl 3 is formed by an unillustrated mold.
  • the circular edge 10 of the outer shell 1 is folded inwards by the parallel to the central axis 11 of the outer shell 1 supplied mold and applied to the inside 9.
  • the curl 3 is glued in the region of the overlap 7 on the inside 9.
  • a recess 12 is provided on the blank 4 at the longitudinal edge 5, which comes to lie in the region of the overlap 7.
  • the recess 12 is in FIG. 3 recognizable.
  • the recess 12 is designed so that it comes close to the fold line 13 for the curl 3.
  • the glue trace 8 on the longitudinal edge 6 is applied beyond the fold line 13 to the area of the blank 4, which subsequently forms the curl 3.
  • a portion 14 of the glue trace is not covered in forming the overlap 7 of the two longitudinal edges 5 and 6.
  • the uncovered part 14 of the glue track 8 is located in the region of the blank 4, which subsequently forms a region 15 of the curl 3 running parallel to the outer casing 1.
  • the uncovered portion 14 of the glue line 8 is located between the fold line 13 for the curl 3 and the edge 10.
  • the uncovered part 14 of the glue track 8 against the inside 9 of the outer shell 1 and thereby glue the curl 3 in the region of the overlap 7 inside the outer shell 1 at.
  • the recess 12 has the advantage that the gluing of the curl 3 on the inside 9 of the outer shell 1 can be realized without additional operation and without additional glue application.
  • the recess 12 has the advantage that the curl 3 in the region of the overlap 7 only has a total thickness which corresponds approximately to three times the material thickness of the blank. The curl 3 is thus hardly thicker in the region of the overlap 7 than in the remaining region of the circumference of the edge 10. It ensures a practically constant large inner diameter C in the region of the curl 3.
  • FIG. 4 a double-walled cup 2 is shown, which has an outer casing 1 according to the invention.
  • the outer jacket 1 is attached to a prefabricated inner cup 16.
  • the inner cup 16 consists essentially of a conical shell 17, which is referred to as the inner shell with respect to the double-walled cup 2, and a cup-shaped bottom 18.
  • the open side of the cup-shaped bottom 18 is arranged so that it from the filling opening of the cup 2 facing away.
  • the bottom 3 is connected with its wall in the region of the smaller circumference of the shell 17 liquid-tight with this by forming a frame 19. in the Area of the frame 19, the material of the shell 17 is wrapped around the wall of the bottom 3 and turned inwards.
  • the jacket 17 and the bottom 18 form a fillable interior 20 of the cup 2.
  • the jacket 20 delimiting the interior 20 has at its upper edge, that is to say in the region of the larger circumference, an outwardly beaded mouth roll 21 which surrounds the filling opening.
  • the inner cup 16 preferably has a round cross section and thus a substantially truncated cone-like shape.
  • the frame 19 has an outwardly projecting widening 22 at least in one area along its circumference.
  • widening is to be understood that the frame 19 is issued relative to a circular cylinder about the central axis of the inner cup 16 to the outside, so that the frame 19 includes a downwardly, to the standing surface expanding cross-sectional area.
  • a lower edge 23 of the expansion 22 on the frame 19 forms the base for the cup 2.
  • the cup 2 is in use on its footprint, which is increased by the expansion 22. As a result, tipping over the cup 2 is difficult.
  • the widening 22 is preferably designed circumferentially along the circumference of the frame 19.
  • the widening 22 enclosing outer diameter is referred to as diameter A.
  • the jacket 20 delimiting the interior 20 contains a rib or bead 24 which can absorb forces acting in the direction of the center axis of the cup 2, that is to say forces acting when stacking between two cups.
  • a diameter B in the region of the bead 24 is matched to the diameter A of the expansion 22 on the frame 19, so that the lower edge 23 of a first cup 2 can be supported on the bead 24 of a second cup 2 and a stable stacking of several similar cup 2 is guaranteed. Even when stacking very high forces occur in the direction of the central axis of the cup 2, there is no wedging of two cups into one another, so that an easy removability of the cup 2 is ensured during unstacking.
  • the outer casing 1 does not affect the stacking properties of the double-walled cup 2, it is provided that the outer contour of the outer casing 1 is within a parallelism 25 to the inner casing 17, wherein the parallel 25 is applied to the widening 22 of the frame 19.
  • the inner shell 17 has in the region of the mouth roll 21 a sudden change in size form a shoulder 26, which is seen from the bottom 18 to the mouth roll 21 as a sudden cross-sectional widening.
  • a shoulder 26 is formed between the inner shell 17th and the outer shell 1, a substantially annular cavity 27, which lends the double-walled cup 2 a very good thermal insulation.
  • the outer casing 1 is located in the region between the mouth roll 21 and the shoulder 26 on the inner shell 17 and can be fixed there, for example by sealing or gluing.
  • the attached at the bottom of the outer shell 1 curl 3 is with its smallest diameter C on the inner cup 16 at.
  • the smallest diameter C of the curl 3 is smaller than the diameter A of the widening 22 on the frame 19.
  • the paper material of the inner cup 16 and the paper material of the outer shell 1 are elastic enough that the outer shell 1 can be pushed without damage with its smallest diameter C on the curl 3 over the diameter A of the expansion 22 over.
  • the curl 3 of the outer shell 1 is not entangled at the lower edge 32 of the expansion 22 on the frame 19, the parallel to the outer shell 1 extending portion 15 of the curl 3 is provided.
  • the diameter at the upper edge of the curl 3 is denoted by the reference numeral D and is greater than the diameter A at the widening 22.
  • the curl 3 glued in the region of the overlap 7 on the inside 9 of the outer shell 1 is. By gluing the curl 3 in the region of the overlap 7 prevents the curl 3 by the high stiffness in the region of the overlap 7 again easily rolls up and the region 15 of the curl 3 is not tight against the inside 9.
  • FIG. 5 is a variant of a double-walled Isolierbechers 2 of FIG. 4 shown.
  • the inner cup 16 of FIG. 5 has no shoulder 26 below the mouth roll 21.
  • an inwardly directed curl 28 is provided at the upper edge of the outer shell 1, which is supported on the inner shell 17.
  • the curl 3 at the bottom of the outer shell 1 in turn has a parallel to Outer jacket 1 extending region 15 and is thus in the field of - in FIG. 5 Not shown - overlap 7 glued on the inside 9.
  • curl 3 is the curl 3 after FIG. 5 not flattened below the region 15, but instead rolled up with an increased radius of curvature.
  • the design of the curl 3 is advantageously adapted to the rigidity and thickness of the paper material used for the outer shell 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Table Devices Or Equipment (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

Es ist ein Außenmantel (1) für einen doppelwandige Becher (2) und ein Verfahren zum Herstellen des Außenmantels beschrieben, bei dem ein flachliegender Zuschnitt (4) aus einem Papiermaterial durch eine Überlappung (7) zweier Längskanten des Zuschnitts hülsenförmig verbunden wird, und bei dem der so gebildete Außenmantel mit einer nach innen gerichteten Einrollung (3) versehen wird. Die Einrollung ist im Bereich der Überlappung innen am Außenmantel angeleimt oder angesiegelt.

Figure imgaf001
It is an outer shell (1) for a double-walled cup (2) and a method for producing the outer sheath described in which a flat blank (4) made of a paper material by an overlap (7) of two longitudinal edges of the blank is connected sleeve-shaped, and at the thus formed outer sheath is provided with an inwardly directed curl (3). The curl is glued or sealed in the area of the overlap inside the outer shell.
Figure imgaf001

Description

Die Erfindung betrifft einen Außenmantel für einen doppelwandigen Becher, der aus einem Zuschnitt aus einem Papiermaterial geformt und mit einer nach innen gerichteten Einrollung versehen ist, wobei der Zuschnitt durch eine Überlappung zweier Längskanten des Zuschnitts hülsenförmig verbunden ist.The invention relates to an outer casing for a double-walled cup, which is formed from a blank of a paper material and provided with an inwardly directed curl, wherein the blank is sleeve-shaped connected by an overlap of two longitudinal edges of the blank.

Die Erfindung betrifft ferner ein Verfahren zum Herstellen eines derartigen Außenmantels.The invention further relates to a method for producing such an outer sheath.

Außenmäntel der eingangs genannten Art werden in der Praxis in großer Zahl eingesetzt, um die Isoliereigenschaften von Papierbechern zu verbessern. Durch die Anbringung des Außenmantels an einem Becher aus Papiermaterial entsteht ein doppelwandiger Isolierbecher mit einem im Wesentlichen ringförmigen Hohlraum zwischen dem Innenmantel und dem Außenmantel des bechers, der dem Becher gute Isoliereigenschaften verleiht. Um einen genügend großen Abstand zwischen Innenmantel und Außenmantel zu gewährleisten, ist es bekannt, an dem Außenmantel wenigstens eine nach innen gerichtete Einrollung anzubringen. Die Einrollung kann in unterschiedlicher Weise gestaltet sein.Outer shells of the type mentioned are used in practice in large numbers to improve the insulating properties of paper cups. By attaching the outer shell to a cup of paper material creates a double-walled insulating cup having a substantially annular cavity between the inner shell and the outer shell of the cup, which gives the cup good insulating properties. In order to ensure a sufficiently large distance between the inner jacket and outer jacket, it is known to attach to the outer jacket at least one inward curl. The curl can be designed in different ways.

Bei der Herstellung des Außenmantels wird ein flach liegender Zuschnitt aus einem Papiermaterial durch eine Überlappung zwei Längskanten des Zuschnitts hülsenförmig verbunden. An dem so gebildeten Außenmantel wird eine nach innen gerichtete Einrollung angebracht. Anschließend wird der vorgefertigte Außenmantel in axialer Richtung auf einen ebenfalls vorgefertigten Becher aufgeschoben und daran befestigt. Es entsteht dadurch ein doppelwandiger Becher.In the manufacture of the outer jacket, a flat blank made of a paper material is connected in a sleeve-shaped manner by overlapping two longitudinal edges of the blank. An inwardly directed curl is applied to the outer shell thus formed. Subsequently, the prefabricated outer jacket is pushed in the axial direction on a likewise prefabricated cup and attached thereto. This creates a double-walled cup.

Beim axialen Aufschieben des Außenmantels auf den Innenbecher kann es vorkommen, dass sich der Außenmantel mit der nach innen gerichteten Einrollung an der Zarge des Innenbechers verhakt.When the outer shell is pushed axially onto the inner cup, it may happen that the outer casing becomes entangled with the inwardly directed curl on the frame of the inner cup.

Der Erfindung liegt die Aufgabe zugrunde, einen Außenmantel für einen doppelwandigen Becher zu schaffen, der sich beim Aufschieben auf einen Innenbecher nicht so leicht verhaken kann.The invention has for its object to provide an outer jacket for a double-walled cup, which can not easily catch when pushed onto an inner cup.

Die Aufgabe wir dadurch gelöst, dass die Einrollung wenigstens im Bereich der Überlappung innen am Außenmantel angeleimt oder angesiegelt ist.The object we achieved in that the curl is glued or sealed at least in the region of the overlap inside the outer shell.

Durch die vergrößerte Dicke des Außenmantels im Bereich der Überlappung sind die rückfedernden Eigenschaften in diesem Bereich besonders groß. Bei relativ steifem Papiermaterial wird die nach innen gerichtete Einrollung am Außenmantel im Bereich der Überlappung nicht exakt geformt, sondern hat durch die Steifigkeit des Papiermaterials das Bestreben sich wieder aufzurollen. Der Innendurchmesser des Außenmantels innerhalb der Einrollung ist dadurch im Bereich der Überlappung verkleinert und kann zu einem Verhaken des Außenmantels an der Zarge des Innenbechers führen, wenn der Außenmantel axial auf den Innenbecher aufgeschoben wird. Durch ein Anleimen oder Ansiegeln der Einrollung im Bereich der Überlappung wird wirkungsvoll verhindert, dass die Einrollung durch die hohe Steifigkeit im Bereich der Überlappung teilweise wieder aufgeht. Ein Verhaken des Außenmantels beim Aufschieben auf den Innenbecher aufgrund eines zu geringen lichten Innendurchmessers im Bereich der Einrollung kann dadurch wirkungsvoll verhindert werden.Due to the increased thickness of the outer sheath in the region of the overlap, the spring-back properties in this area are particularly great. With relatively stiff paper material, the inward curl on the outer shell in the region of the overlap is not exactly shaped, but has the tendency to rewind due to the rigidity of the paper material. The inner diameter of the outer shell within the curl is thereby reduced in the region of the overlap and can lead to a snagging of the outer shell on the frame of the inner cup, when the outer jacket is pushed axially onto the inner cup. By gluing or sealing the curl in the region of the overlap is effectively prevented that the curl partially rises again due to the high stiffness in the overlap. An entanglement of the outer shell when pushed onto the inner cup due to a too small clear inner diameter in the region of the curl can be effectively prevented.

Ein Anleimen oder Ansiegeln der Einrollung innen am Außenmantel ist insbesondere vorteilhaft wenn die Einrollung einen parallel zum Außenmantel verlaufenden Bereich aufweist, indem das Material der Einrollung flächig auf der Innenseite des Außenmantels anliegt.Gluing or sealing the curl on the inside of the outer jacket is particularly advantageous if the curl has a region extending parallel to the outer jacket, in that the material of the curl lies flat against the inside of the outer jacket.

Oftmals wird für den Außenmantel ein unbeschichtetes Papiermaterial verwendet, da der Außenmantel nicht mit der in den Becher einzufüllenden Flüssigkeit in Kontakt kommt. Bei der Verwendung eines unbeschichteten Papiermaterials wird an einer Längskante des Zuschnitts eine Leimspur aufgetragen, bevor der Zuschnitt hülsenförmig verbunden wird. Erfindungsgemäß wird in einem solchen Fall die Einrollung ebenfalls innen am Außenmantel angeleimt. Es können verschiedene Leimarten verwendet werden. Geeignet ist beispielsweise ein Kaltleim, ein Heißleim oder insbesondere ein Heißschmelzklebstoff ("Hot-Melt").Often an uncoated paper material is used for the outer jacket, since the outer jacket does not come into contact with the liquid to be filled into the cup. When using an uncoated paper material, a glue trace is applied to a longitudinal edge of the blank before the blank is connected in a sleeve shape. According to the invention, the curl is also glued inside the outer shell in such a case. Different types of glue can be used. For example, a cold glue, a hot glue or in particular a hot-melt adhesive ("hot-melt") is suitable.

Für gewisse Anwendungsfälle kann es auch vorteilhaft sein, den Außenmantel aus einem Papiermaterial herzustellen, das wenigstens auf einer Seite eine Beschichtung, beispielsweise aus Polyethylen, aufweist. Die Einrollung kann hierbei durch Erwärmen der Kunststoffbeschichtung innen am Außenmantel angesiegelt werden. Das Ansiegeln oder Anleimen der Einrollung kann auch entlang des kompletten Umfangs des Außenmantels umlaufend ausgeführt werden.For certain applications, it may also be advantageous to produce the outer sheath from a paper material having a coating, for example made of polyethylene, at least on one side. The curl can be sealed inside by heating the plastic coating inside the outer jacket. The sealing or gluing the curl can also be performed circumferentially along the entire circumference of the outer shell.

Zur effizienten Herstellung des Außenmantels ist es vorteilhaft, wenn der Zuschnitt an einer Längskante eine Aussparung enthält, die in den Bereich der Überlappung zu liegen kommt. Die Aussparung ist dabei so gestaltet, dass bei Überlappung der beiden Längskanten ein Teil der Leimspur nicht abgedeckt wird. Der nicht abgedeckte Teil der Leimspur dient bei der Formung der nach innen gerichteten Einrollung zum Anleimen der Einrollung im Bereich der Überlappung innen am Außenmantel.For the efficient production of the outer jacket, it is advantageous if the blank at a longitudinal edge contains a recess which comes to lie in the region of the overlap. The recess is designed so that when overlapping the two longitudinal edges of a part of the glue line is not covered. The uncovered portion of the glue line is used in the formation of the inward curl for gluing the curl in the region of the overlap inside the outer shell.

Die Aussparung des Zuschnitts im Bereich der Überlappung ist bevorzugt so gestaltet, dass die Einrollung in einem Bereich der Überlappung nur zu einer Gesamtdicke des Außenmantels führt, die in etwa der dreifachen Materialdicke des Zuschnitts entspricht. Im Gegensatz zu einer herkömmlicher Weise mindestens vierfachen Materialdicke im Bereich der Überlappung verringert auch die verringerte Gesamtdicke im Bereich der Überlappung die Gefahr eines Verhakens des Außenmantels beim Aufschieben auf den Innenbecher.The recess of the blank in the region of the overlap is preferably designed such that the curl in an area of the overlap only leads to a total thickness of the outer shell, which corresponds approximately to three times the material thickness of the blank. In contrast to a conventional manner at least four times the thickness of the material in the region of the overlap, the reduced overall thickness in the region of the overlap also reduces the risk of the outer casing becoming caught when pushed onto the inner cup.

Ein erfindungsgemäßer Außenmantel ist insbesondere für Becher geeignet, die eine im Wesentlichen kegelstumpfförmige Form haben. Der Außenmantel kann dementsprechend ebenfalls konisch ausgeführt sein. Die innen am Außenmantel angeleimte oder angesiegelte Einrollung ist dabei an dem Ende des Außenmantels angebracht, das den kleineren Umfang aufweist. Ein erfindungsgemäßer Außenmantel ist jedoch nicht nur für Becher aus Papiermaterial geeignet, sondern kann sehr vorteilhaft auch als Außenmantel für Becher aus Kunststoffmaterial eingesetzt werden.An inventive outer jacket is particularly suitable for cups that have a substantially frusto-conical shape. The outer sheath can accordingly also be conical. The glued on the outer shell or sealed Einrollung is attached to the end of the outer shell, which has the smaller circumference. However, an outer sheath according to the invention is not only suitable for cups made of paper material, but can also be used very advantageously as an outer sheath for cups of plastic material.

Des Weiteren ist ein erfindungsgemäßer Außenmantel besonders für einen Innenbecher geeignet, der an seiner Zarge eine Aufweitung aufweist, wobei ein unterer Rand der Aufweitung eine Standfläche für den Becher bildet. Bei Innenbechern mit aufgeweiteter Zarge ist das Aufschieben eines Außenmantels besonders kritisch, da der die Aufweitung umschließende Durchmesser gleich groß oder sogar etwas größer als der Innendurchmesser der Einrollung des Außenmantels sein kann. Auch bei derartigen Innenbechern kann mit einem erfindungsgemäßen Außenmantel ein Verhaken des Außenmantels beim axialen Aufschieben wirkungsvoll verhindert werden.Furthermore, an outer sheath according to the invention is particularly suitable for an inner cup which has a widening on its frame, wherein a lower edge of the widening forms a standing surface for the cup. For inner cups with flared frame pushing on an outer shell is particularly critical because the diameter surrounding the expansion can be the same size or even slightly larger than the inner diameter of the curl of the outer shell. Even with such inner cups can be effectively prevented with an outer jacket according to the invention snagging of the outer shell during axial pushing.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den Ansprüchen und der nachfolgenden Beschreibung einiger Ausführungsbeispiele im Zusammenhang mit den Figuren. Einzelmerkmale der unterschiedlichen dargestellten und beschriebenen Ausführungsformen lassen sich dabei in beliebiger Weise kombinieren, ohne den Rahmen der Erfindung zu überschreiten.Further advantages and features of the invention will become apparent from the claims and the following description of some embodiments in conjunction with the figures. Individual features of the different embodiments shown and described can be combined in any way, without exceeding the scope of the invention.

Es zeigen:Show it:

  • Figur 1 einen erfindungsgemäßen Außenmantel für einen doppelwandigen Becher im Längsschnitt, FIG. 1 an outer jacket according to the invention for a double-walled cup in longitudinal section,
  • Figur 2 eine Draufsicht in Richtung des Pfeiles II der Figur 1 auf den Außenmantel, FIG. 2 a plan view in the direction of arrow II of FIG. 1 on the outer jacket,
  • Figur 3 einen flach liegenden Zuschnitt für einen Außenmantel der Figur 1, FIG. 3 a flat blank for an outer jacket of FIG. 1 .
  • Figur 4 einen teilweise dargestellten Längsschnitt eines doppelwandigen Bechers mit einem Außenmantel der Figur 1, FIG. 4 a partially illustrated longitudinal section of a double-walled cup with an outer shell of FIG. 1 .
  • Figur 5 eine Ansicht ähnlich Figur 4 auf eine Variante eines doppelwandigen Bechers. FIG. 5 a view similar FIG. 4 on a variant of a double-walled cup.

In den Figuren 1 und 2 ist ein Außenmantel 1 für einen doppelwandigen Becher 2 dargestellt. Der doppelwandige Becher 2 ist weiter unten mit Hilfe der Figur 5 näher beschrieben. Der Außenmantel 1 besteht aus einem Papiermaterial und hat eine hülsenförmige, konische Form. An dem Ende mit dem kleineren Umfang ist eine nach innen gerichtete Einrollung 3 angebracht.In the Figures 1 and 2 an outer jacket 1 for a double-walled cup 2 is shown. The double-walled cup 2 is below with the help of FIG. 5 described in more detail. The outer shell 1 is made of a paper material and has a sleeve-shaped, conical shape. At the end with the smaller circumference, an inwardly directed curl 3 is attached.

Der Außenmantel 1 ist aus einem Zuschnitt 4 aus Papiermaterial geformt. Der flach liegende Zuschnitt 4 als Ausgangsmaterial für den Außenmantel 1 ist in Figur 3 dargestellt. Der Zuschnitt 4 hat im Wesentlichen die Form eines Segments aus einem Kreisring. Der Zuschnitt weist zwei Längskanten 5 und 6 auf, die unter Bildung einer Überlappung 7 mit einander verbunden werden, so dass der hülsenförmige Außenmantel 1 entsteht. Zum Verbinden der Längskanten 5 und 6 im Bereich der Überlappung 7 wird auf den flach liegenden Zuschnitt 4 an der Längskante 6 eine Leimspur 8 aufgetragen. Die Leimspur 8 wird dabei auf die Seite des Zuschnitts 4 aufgetragen, die nachher die Innenseite 9 des Außenmantels 1 bildet. Der flach liegende Zuschnitt 4 wird nach dem Auftragen der Leimspur 8 um einen nicht dargestellten konischen Dorn gewickelt. Beim Wickeln des Zuschnitts 4 auf den Dorn wird die Längskante 6 mit der Leimspur 8 auf die Längskante 5 gelegt und angedrückt, so dass die Überlappung 7 entsteht. Anschließend wird durch ein nicht dargestelltes Formwerkzeug die Einrollung 3 geformt. Die kreisförmige Kante 10 des Außenmantels 1 wird durch das parallel zur Mittelachse 11 des Außenmantels 1 zugestellte Formwerkzeug nach innen umgelegt und an die Innenseite 9 angelegt.The outer shell 1 is formed from a blank 4 of paper material. The flat blank 4 as starting material for the outer jacket 1 is in FIG. 3 shown. The blank 4 has substantially the shape of a segment of a circular ring. The blank has two longitudinal edges 5 and 6, which are connected to form an overlap 7 with each other, so that the sleeve-shaped outer shell 1 is formed. To join the longitudinal edges 5 and 6 in the region of the overlap 7, a glue trace 8 is applied to the flat blank 4 at the longitudinal edge 6. The glue trace 8 is applied to the side of the blank 4, which subsequently forms the inside 9 of the outer shell 1. The flat blank 4 is wound after applying the glue trace 8 around a conical mandrel, not shown. When winding the blank 4 on the mandrel, the longitudinal edge 6 with the glue trace 8 on the longitudinal edge. 5 placed and pressed so that the overlap 7 arises. Subsequently, the curl 3 is formed by an unillustrated mold. The circular edge 10 of the outer shell 1 is folded inwards by the parallel to the central axis 11 of the outer shell 1 supplied mold and applied to the inside 9.

Erfindungsgemäß ist vorgesehen, dass die Einrollung 3 im Bereich der Überlappung 7 auf der Innenseite 9 angeleimt wird. Hierzu ist am Zuschnitt 4 an der Längskante 5 eine Aussparung 12 vorgesehen, die in den Bereich der Überlappung 7 zu liegen kommt. Die Aussparung 12 ist in Figur 3 erkennbar. Die Aussparung 12 ist so gestaltet, dass sie bis dicht an die Faltlinie 13 für die Einrollung 3 heranreicht. Die Leimspur 8 an der Längskante 6 wird über die Faltlinie 13 hinaus bis in den Bereich des Zuschnitts 4 aufgetragen, der nachher die Einrollung 3 bildet. Durch die Aussparung 12 wird bei Bildung der Überlappung 7 der beiden Längskanten 5 und 6 ein Teil 14 der Leimspur nicht abgedeckt. Der nicht abgedeckte Teil 14 der Leimspur 8 befindet sich im Bereich des Zuschnitts 4, der nachher einen parallel zum Außenmantel 1 verlaufenden Bereich 15 der Einrollung 3 bildet. Der nicht abgedeckte Teil 14 der Leimspur 8 befindet sich zwischen der Faltlinie 13 für die Einrollung 3 und der Kante 10. Bei der Formung der nach innen gerichteten Einrollung 3, wie sie in Figur 1 dargestellt ist, kommt nun der nicht abgedeckte Teil 14 der Leimspur 8 gegen die Innenseite 9 des Außenmantels 1 zu liegen und leimt dadurch die Einrollung 3 im Bereich der Überlappung 7 innen am Außenmantel 1 an.According to the invention, the curl 3 is glued in the region of the overlap 7 on the inside 9. For this purpose, a recess 12 is provided on the blank 4 at the longitudinal edge 5, which comes to lie in the region of the overlap 7. The recess 12 is in FIG. 3 recognizable. The recess 12 is designed so that it comes close to the fold line 13 for the curl 3. The glue trace 8 on the longitudinal edge 6 is applied beyond the fold line 13 to the area of the blank 4, which subsequently forms the curl 3. Through the recess 12, a portion 14 of the glue trace is not covered in forming the overlap 7 of the two longitudinal edges 5 and 6. The uncovered part 14 of the glue track 8 is located in the region of the blank 4, which subsequently forms a region 15 of the curl 3 running parallel to the outer casing 1. The uncovered portion 14 of the glue line 8 is located between the fold line 13 for the curl 3 and the edge 10. In the formation of the inward curl 3, as in FIG. 1 is shown, now comes the uncovered part 14 of the glue track 8 against the inside 9 of the outer shell 1 and thereby glue the curl 3 in the region of the overlap 7 inside the outer shell 1 at.

Die Aussparung 12 hat den Vorteil, dass das Anleimen der Einrollung 3 auf der Innenseite 9 des Außenmantels 1 ohne zusätzlichen Arbeitsschritt und ohne zusätzliche Leimauftrag realisiert werden kann. Außerdem hat die Aussparung 12 den Vorteil, dass die Einrollung 3 in dem Bereich der Überlappung 7 nur eine Gesamtdicke aufweist, die in etwa der dreifachen Materialdicke des Zuschnitts entspricht. Die Einrollung 3 ist also im Bereich der Überlappung 7 kaum dicker als im übrigen Bereich des Umfangs der Kante 10. Es wird dadurch ein praktisch gleich bleibend großer Innendurchmesser C im Bereich der Einrollung 3 gewährleistet.The recess 12 has the advantage that the gluing of the curl 3 on the inside 9 of the outer shell 1 can be realized without additional operation and without additional glue application. In addition, the recess 12 has the advantage that the curl 3 in the region of the overlap 7 only has a total thickness which corresponds approximately to three times the material thickness of the blank. The curl 3 is thus hardly thicker in the region of the overlap 7 than in the remaining region of the circumference of the edge 10. It ensures a practically constant large inner diameter C in the region of the curl 3.

In Figur 4 ist ein doppelwandiger Becher 2 dargestellt, der einen erfindungsgemäßen Außenmantel 1 aufweist. Der Außenmantel 1 ist an einem vorgefertigten Innenbecher 16 angebracht. Der Innenbecher 16 besteht im Wesentlichen aus einem konischen Mantel 17, der in Bezug auf den doppelwandigen Becher 2 auch als Innenmantel bezeichnet wird, und einem topfförmigen Boden 18. Die offene Seite des topfförmigen Bodens 18 ist so angeordnet, dass sie von der Füllöffnung des Bechers 2 abgewandt ist. Der Boden 3 ist mit seiner Wandung im Bereich des geringeren Umfangs des Mantels 17 flüssigkeitsdicht mit diesem durch Bildung einer Zarge 19 verbunden. Im Bereich der Zarge 19 ist das Material des Mantels 17 um die Wandung des Bodens 3 herumgelegt und nach innen eingeschlagen. Der Mantel 17 und der Boden 18 bilden einen befüllbaren Innenraum 20 des Bechers 2. Der den Innenraum 20 begrenzende Mantel 17 weist an seinem oberen Rand, also in dem Bereich des größeren Umfangs, eine nach Außen gebördelte Mundrolle 21 auf, die die Füllöffnung umgibt. Der Innenbecher 16 hat bevorzugt einen rund Querschnitt und somit eine im Wesentlichen kegelstumpfähnliche Form.In FIG. 4 a double-walled cup 2 is shown, which has an outer casing 1 according to the invention. The outer jacket 1 is attached to a prefabricated inner cup 16. The inner cup 16 consists essentially of a conical shell 17, which is referred to as the inner shell with respect to the double-walled cup 2, and a cup-shaped bottom 18. The open side of the cup-shaped bottom 18 is arranged so that it from the filling opening of the cup 2 facing away. The bottom 3 is connected with its wall in the region of the smaller circumference of the shell 17 liquid-tight with this by forming a frame 19. in the Area of the frame 19, the material of the shell 17 is wrapped around the wall of the bottom 3 and turned inwards. The jacket 17 and the bottom 18 form a fillable interior 20 of the cup 2. The jacket 20 delimiting the interior 20 has at its upper edge, that is to say in the region of the larger circumference, an outwardly beaded mouth roll 21 which surrounds the filling opening. The inner cup 16 preferably has a round cross section and thus a substantially truncated cone-like shape.

Die Zarge 19 weist wenigstens in einem Bereich entlang ihres Umfangs eine nach außen ragende Aufweitung 22 auf. Unter Aufweitung ist dabei zu verstehen, dass die Zarge 19 bezogen auf einen Kreiszylinder um die Mittelachse des Innenbechers 16 nach außen ausgestellt ist, so dass die Zarge 19 eine sich nach unten, zur Standfläche hin erweiternde Querschnittsfläche einschließt. Ein untere Rand 23 der Aufweitung 22 an der Zarge 19 bildet die Standfläche für den Becher 2. Der Becher 2 steht bei Gebrauch auf seiner Standfläche, die durch die Aufweitung 22 vergrößert ist. Dadurch ist ein Umkippen des Bechers 2 erschwert. Die Aufweitung 22 ist bevorzugt entlang des Umfangs der Zarge 19 umlaufend gestaltet. Der die Aufweitung 22 umschließende Außendurchmesser ist als Durchmesser A bezeichnet.The frame 19 has an outwardly projecting widening 22 at least in one area along its circumference. By widening is to be understood that the frame 19 is issued relative to a circular cylinder about the central axis of the inner cup 16 to the outside, so that the frame 19 includes a downwardly, to the standing surface expanding cross-sectional area. A lower edge 23 of the expansion 22 on the frame 19 forms the base for the cup 2. The cup 2 is in use on its footprint, which is increased by the expansion 22. As a result, tipping over the cup 2 is difficult. The widening 22 is preferably designed circumferentially along the circumference of the frame 19. The widening 22 enclosing outer diameter is referred to as diameter A.

Es kann vorgesehen sein, dass der den Innenraum 20 begrenzende Mantel 17 eine Rippe oder Sicke 24 enthält, die in Richtung der Mittelachse des Bechers 2 wirkende Kräfte, also Kräfte die beim Stapeln zwischen zwei Bechern wirken, aufnehmen kann. Ein Durchmesser B im Bereich der Sicke 24 ist auf den Durchmesser A der Aufweitung 22 an der Zarge 19 abgestimmt, so dass sich der untere Rand 23 eines ersten Bechers 2 auf der Sicke 24 eines zweiten Bechers 2 abstützen kann und ein stabiles Stapeln mehrerer gleichartiger Becher 2 gewährleistet wird. Auch wenn beim Stapeln sehr hohe Kräfte in Richtung der Mittelachse des Bechers 2 auftreten, kommt es nicht zu einem Verkeilen von zwei Bechern ineinander, so dass eine leichte Entnehmbarkeit der Becher 2 beim Entstapeln gewährleistet ist.It can be provided that the jacket 20 delimiting the interior 20 contains a rib or bead 24 which can absorb forces acting in the direction of the center axis of the cup 2, that is to say forces acting when stacking between two cups. A diameter B in the region of the bead 24 is matched to the diameter A of the expansion 22 on the frame 19, so that the lower edge 23 of a first cup 2 can be supported on the bead 24 of a second cup 2 and a stable stacking of several similar cup 2 is guaranteed. Even when stacking very high forces occur in the direction of the central axis of the cup 2, there is no wedging of two cups into one another, so that an easy removability of the cup 2 is ensured during unstacking.

Damit der Außenmantel 1 die Stapeleigenschaften des doppelwandigen Bechers 2 nicht beeinträchtigt, ist vorgesehen, dass sich die Außenkontur des Außenmantels 1 innerhalb einer Parallelen 25 zu dem Innenmantel 17 befindet, wobei die Parallele 25 an der Aufweitung 22 der Zarge 19 angelegt wird.So that the outer casing 1 does not affect the stacking properties of the double-walled cup 2, it is provided that the outer contour of the outer casing 1 is within a parallelism 25 to the inner casing 17, wherein the parallel 25 is applied to the widening 22 of the frame 19.

Der Innenmantel 17 weist im Bereich der Mundrolle 21 eine sprunghafte Größenveränderung Form einer Schulter 26 auf, die sich vom Boden 18 zur Mundrolle 21 gesehen als sprunghafte Querschnittserweiterung darstellt. Durch die Schulter 26 entsteht zwischen dem Innenmantel 17 und dem Außenmantel 1 ein im Wesentlichen ringförmiger Hohlraum 27, der dem doppelwandigen Becher 2 eine sehr gute Wärmeisolierung verleit. Der Außenmantel 1 liegt im Bereich zwischen der Mundrolle 21 und der Schulter 26 am Innenmantel 17 an und kann dort, beispielsweise durch Siegeln oder Leimen, fixiert sein. Die am unteren Rand des Außenmantels 1 angebrachte Einrollung 3 liegt mit ihrem kleinsten Durchmesser C an dem Innenbecher 16 an.The inner shell 17 has in the region of the mouth roll 21 a sudden change in size form a shoulder 26, which is seen from the bottom 18 to the mouth roll 21 as a sudden cross-sectional widening. By the shoulder 26 is formed between the inner shell 17th and the outer shell 1, a substantially annular cavity 27, which lends the double-walled cup 2 a very good thermal insulation. The outer casing 1 is located in the region between the mouth roll 21 and the shoulder 26 on the inner shell 17 and can be fixed there, for example by sealing or gluing. The attached at the bottom of the outer shell 1 curl 3 is with its smallest diameter C on the inner cup 16 at.

Es ist vorgesehen, dass der kleinste Durchmesser C der Einrollung 3 kleiner als der Durchmesser A der Aufweitung 22 an der Zarge 19 ist. Bei der Herstellung des doppelwandigen Bechers 2 wird der vorgefertigte Außenmantel über einen ebenfalls komplett vorgefertigten Innenbecher 16 von unten in axialer Richtung aufgeschoben. Das Papiermaterial des Innenbechers 16 und das Papiermaterial des Außenmantels 1 sind elastisch genug, dass der Außenmantel 1 ohne Beschädigung mit seinem kleinsten Durchmesser C an der Einrollung 3 über den Durchmesser A der Aufweitung 22 hinüber geschoben werden kann.It is provided that the smallest diameter C of the curl 3 is smaller than the diameter A of the widening 22 on the frame 19. In the production of the double-walled cup 2 of the prefabricated outer shell is pushed over a likewise completely prefabricated inner cup 16 from below in the axial direction. The paper material of the inner cup 16 and the paper material of the outer shell 1 are elastic enough that the outer shell 1 can be pushed without damage with its smallest diameter C on the curl 3 over the diameter A of the expansion 22 over.

Damit sich die Einrollung 3 des Außenmantels 1 nicht am unteren Rand 32 der Aufweitung 22 an der Zarge 19 verhakt, ist der parallel zum Außenmantel 1 verlaufende Bereich 15 der Einrollung 3 vorgesehen. Der Durchmesser am oberen Rand der Einrollung 3 ist mit dem Bezugszeichen D bezeichnet und ist größer als der Durchmesser A an der Aufweitung 22. Außerdem ist gemäß der Erfindung vorgesehen, dass die Einrollung 3 im Bereich der Überlappung 7 auf der Innenseite 9 des Außenmantels 1 angeleimt ist. Durch das Anleimen der Einrollung 3 im Bereich der Überlappung 7 wird verhindert, dass sich die Einrollung 3 durch die hohe Steifigkeit im Bereich der Überlappung 7 wieder leicht aufrollt und der Bereich 15 der Einrollung 3 nicht dicht an der Innenseite 9 anliegt.Thus, the curl 3 of the outer shell 1 is not entangled at the lower edge 32 of the expansion 22 on the frame 19, the parallel to the outer shell 1 extending portion 15 of the curl 3 is provided. The diameter at the upper edge of the curl 3 is denoted by the reference numeral D and is greater than the diameter A at the widening 22. It is also provided according to the invention that the curl 3 glued in the region of the overlap 7 on the inside 9 of the outer shell 1 is. By gluing the curl 3 in the region of the overlap 7 prevents the curl 3 by the high stiffness in the region of the overlap 7 again easily rolls up and the region 15 of the curl 3 is not tight against the inside 9.

Aufgrund der im Bereich der Überlappung 7 angeleimten Einrollung 3 ist ein Verhaken des Außenmantels 1 beim axialen Aufschieben auf den Innenbecher 16 wirkungsvoll verhindert und die Produktionsgeschwindigkeit bei der Herstellung des doppelwandigen Bechers 2 lässt sich steigern.Due to the glued in the region of the overlap 7 curl 3 3 hooking of the outer shell 1 during axial sliding on the inner cup 16 is effectively prevented and the production speed in the production of the double-walled cup 2 can be increased.

In Figur 5 ist eine Variante eines doppelwandigen Isolierbechers 2 der Figur 4 dargestellt. Gleiche Bezugszeichen kennzeichnen gleiche Teile des Bechers 2, so dass auf eine wiederholte Beschreibung verzichtet werden kann. Der Innenbecher 16 der Figur 5 weist unterhalb der Mundrolle 21 keine Schulter 26 auf. Zur Sicherstellung eines ausreichend breiten Hohlraumes 27 zwischen Innenmantel 17 und Außenmantel 1 ist am oberen Rand des Außenmantels 1 eine nach innen gerichtete Einrollung 28 vorgesehen, die sich auf dem Innenmantel 17 abstützt. Die Einrollung 3 am unteren Rand des Außenmantels 1 weist wiederum einen parallel zum Außenmantel 1 verlaufenden Bereich 15 auf und ist damit im Bereich der - in Figur 5 nicht dargestellten - Überlappung 7 auf der Innenseite 9 angeleimt. In Abwandlung zur der in den Figuren 1 und 4 dargestellten Einrollung 3 ist die Einrollung 3 nach Figur 5 unterhalb des Bereichs 15 nicht platt gedrückt, sondern stattdessen mit einem vergrößerten Krümmungsradius eingerollt. Die Gestaltung der Einrollung 3 wird vorteilhafter Weise an die Steifigkeit und Dicke des für den Außenmantel 1 verwendeten Papiermaterials angepasst.In FIG. 5 is a variant of a double-walled Isolierbechers 2 of FIG. 4 shown. Like reference numerals denote like parts of the cup 2, so that a repeated description can be dispensed with. The inner cup 16 of FIG. 5 has no shoulder 26 below the mouth roll 21. To ensure a sufficiently wide cavity 27 between inner shell 17 and outer shell 1, an inwardly directed curl 28 is provided at the upper edge of the outer shell 1, which is supported on the inner shell 17. The curl 3 at the bottom of the outer shell 1 in turn has a parallel to Outer jacket 1 extending region 15 and is thus in the field of - in FIG. 5 Not shown - overlap 7 glued on the inside 9. In modification to the in the FIGS. 1 and 4 shown curl 3 is the curl 3 after FIG. 5 not flattened below the region 15, but instead rolled up with an increased radius of curvature. The design of the curl 3 is advantageously adapted to the rigidity and thickness of the paper material used for the outer shell 1.

Claims (7)

Außenmantel (1) für einen doppelwandigen Becher (2), der aus einem Zuschnitt (4) aus einem Papiermaterial geformt und mit einer nach innen gerichteten Einrollung (3) versehen ist, wobei der Zuschnitt (4) durch eine Überlappung (7) zweier Längskanten (5, 6) des Zuschnitts (4) hülsenförmig verbunden ist, dadurch gekennzeichnet, dass die Einrollung (3) wenigstens im Bereich der Überlappung (7) auf der Innenseite (9) des Außenmantels (1) angeleimt oder angesiegelt ist.Outer casing (1) for a double-walled cup (2) formed from a blank (4) of a paper material and provided with an inwardly directed curl (3), the blank (4) being overlapped (7) by two longitudinal edges (5, 6) of the blank (4) is connected sleeve-shaped, characterized in that the curl (3) at least in the region of the overlap (7) on the inside (9) of the outer shell (1) is glued or sealed. Außenmantel nach Anspruch 1, dadurch gekennzeichnet, dass der Zuschnitt (4) im Bereich der Überlappung (7) eine Aussparung (12) enthält, so dass an der Überlappung (7) ein parallel zum Außenmantel (1) verlaufender Bereich (15) der Einrollung (3) nur zu einer Gesamtdicke führt, die in etwa der dreifachen Materialdicke des Zuschnitts (4) entspricht.Outer jacket according to claim 1, characterized in that the blank (4) in the region of the overlap (7) contains a recess (12), so that at the overlap (7) a parallel to the outer shell (1) extending region (15) of the curl (3) only leads to a total thickness which corresponds approximately to three times the material thickness of the blank (4). Verfahren zum Herstellen eines Außenmantels für einen doppelwandigen Becher, bei dem ein flach liegender Zuschnitt aus einem Papiermaterial durch eine Überlappung zweier Längskanten des Zuschnitts hülsenförmig verbunden wird, und bei dem der so gebildete Außenmantel mit einer nach gerichteten Einrollung versehen wird, dadurch gekennzeichnet, das die Einrollung im Bereich der Überlappung innen am Außenmantel angeleimt oder angesiegelt wird.A method for producing an outer jacket for a double-walled cup, in which a flat blank made of a paper material is sleeve-connected by an overlap of two longitudinal edges of the blank, and in which the outer jacket thus formed is provided with a unidirectional curling, characterized in that Rolling in the region of the overlap is glued or sealed inside the outer jacket. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass der Zuschnitt an einer Längskante einer Aussparung enthält, die in den Bereich der Überlappung zu liegen kommt.A method according to claim 3, characterized in that the blank contains at a longitudinal edge of a recess which comes to lie in the region of the overlap. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass an der anderen Längskante des Zuschnitts eine Leimspur aufgetragen wird, bevor der Zuschnitt hülsenförmig verbunden wird.A method according to claim 4, characterized in that on the other longitudinal edge of the blank, a glue trace is applied before the blank is connected in a sleeve shape. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass bei Überlappung der beiden Längskanten durch die Aussparung ein Teil der Leimspur nicht abgedeckt wird.A method according to claim 5, characterized in that when overlapping the two longitudinal edges through the recess part of the glue trace is not covered. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass bei Formung der nach innen gerichteten Einrollung der nicht abgedeckte Teil der Leimspur die Einrollung im Bereich der Überlappung innen am Außenmantel anleimt.A method according to claim 6, characterized in that when forming the inwardly directed curl of the uncovered portion of the glue line the curl in the region of the overlap inside the outer jacket glued.
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EP2128041B1 (en) 2012-05-02
PL2128041T3 (en) 2012-10-31
EA200900596A1 (en) 2009-12-30
EA016924B1 (en) 2012-08-30
US8387857B2 (en) 2013-03-05
DE102008026984A1 (en) 2009-12-03
ATE555999T1 (en) 2012-05-15
US20090294456A1 (en) 2009-12-03

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