EP2238050B1 - Labyrinth capsule for drink powder - Google Patents

Labyrinth capsule for drink powder Download PDF

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Publication number
EP2238050B1
EP2238050B1 EP08709807A EP08709807A EP2238050B1 EP 2238050 B1 EP2238050 B1 EP 2238050B1 EP 08709807 A EP08709807 A EP 08709807A EP 08709807 A EP08709807 A EP 08709807A EP 2238050 B1 EP2238050 B1 EP 2238050B1
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EP
European Patent Office
Prior art keywords
labyrinth
capsule
edge
plate
sealing film
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Not-in-force
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EP08709807A
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German (de)
French (fr)
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EP2238050A1 (en
Inventor
Wolfgang Zangerle
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Nestec SA
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Nestec SA
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Publication of EP2238050A1 publication Critical patent/EP2238050A1/en
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    • 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
    • B65D85/8043—Packages adapted to allow liquid to pass through the contents
    • B65D85/8055—Means for influencing the liquid flow inside the package

Definitions

  • This invention relates to a labyrinth capsule containing a powder for making a beverage.
  • Such capsules are mainly used for the machine preparation of coffee.
  • such a capsule may also contain other powders, such as effervescent tablet powder, powders for the preparation of syrups or tea, etc.
  • the task of the capsule is to temporarily store this powder and then to provide by the machine instant preparation for excellent beverage quality.
  • hot or cold water is pressed with pressure through the capsule and formed by the same to a possible laminar flowing and to avoid spattering to a not too fast flowing spout jet.
  • the water should also be intimately mixed with the powder so that it is completely dissolved in the water flowing through.
  • Conventional capsules consist of a deep-drawn small plastic cup, the bottom of which is outwardly cambered and prepared in the center to be pierced by a spike, creating a round spout.
  • a labyrinth plate with serrated outer edge is inserted inside.
  • this plate On the side of this plate, which is directed against the ground, this plate forms a labyrinth structure with central Mandrel to create the spout hole while having a plurality of piercing spikes on the upwardly directed side.
  • this plate is then inserted from above a sealing foil made of aluminum or plastic. The whole cup-like capsule is closed after filling with powder at the top with a sealing film.
  • this sealing film is pierced and through the resulting hole is pressed at high pressure brewing liquid, usually hot water, into the capsule.
  • the liquid penetrates the powder at high pressure. Due to the hydrostatic pressure, the sealing foil is pressed against the cup wall at its edge and continues to seal there. However, the piercing spikes penetrate the sealing foil on the inserted labyrinth plate.
  • the liquid with the dissolved powder flows through the many holes formed in the sealing film. Below the sealing film, the liquid flows radially against the edge of the labyrinth plate and flows around its edge between the tooth gaps of the toothed edge.
  • the lancing labyrinth plate is inserted only in the capsule and is not securely positioned there. This plate can therefore move slightly out of the center. When that happens, the edge does not flow all around evenly. As a further consequence, then the spout is not exactly in the center of the capsule floor, but is slightly offset laterally. It then creates a skewed outgoing beam.
  • the flow through the labyrinth is not guaranteed in every case. Because the labyrinth plate is only inserted, it can lift slightly under the fluid pressure of the liquid flowing around its edge in the cup. As a result, the liquid flows below the labyrinth along the bottom of the cup to the spout, and does not really flow through the labyrinth. It can then be achieved no intimate mixing by turbulence in the labyrinth. Accordingly, then the good solution of the powder is not guaranteed in the flowing liquid.
  • the object of the present invention is therefore to provide a labyrinth capsule for beverage powder, which overcomes the above-mentioned disadvantages.
  • a labyrinth capsule for beverage powder consisting of a cup-shaped capsule whose capsule bottom is formed by a Labyrinthpiatte; which has on its upper side a labyrinth structure and piercing spikes, and in the center of a hole with central round pin, and on which labyrinth plate a sealing foil placed and welded along its edge to the edge of the labyrinth plate directly or indirectly, and with the webs of the labyrinth structure in the first Half of the labyrinth plate is welded welded, wherein the capsule is sealed, including the filling at its upper edge with a closing foil.
  • FIG. 1 shows the first component of this total of four parts capsule for beverage powder, for example for coffee or an effervescent powder.
  • This first component forms the conical wall 1 of a cup-like capsule, with cantilever edge 2 at the top and inwardly projecting edge 3 at the bottom.
  • This ingredient is used in most Cases made by deep-drawing of a laminate plastic with barrier function, which can ensure the required gas-tightness.
  • a bead preferably runs as energy directors ERG for later welding of a sealing film on the upper edge 2 and a labyrinth plate on the lower edge 3.
  • the cup can also be made together with the bottom as a one-piece molded part.
  • the bottom forms in this case at the same time the labyrinth plate, as will become clear.
  • the bottom, which forms the labyrinth plate, at its edge has a shoulder for the welding of a sealing film, and this shoulder may be provided with a bead as energy directors ERG for the sealing film réelleschweissende.
  • this In the center of the labyrinth plate 4, this has a spout hole 10, on which a basket 11 is formed, which spans the hole 10 and in the center of which is a round pin 12 extends down through the hole 10 therethrough.
  • the liquid then flows through the basket 11 in the spout hole 10, and because in the center of a round pin 12 is, it is flowed around and at the outlet of the liquid jet can be a total taper and therefore there is a largely laminar liquid jet.
  • the round pin 12 thus contributes to the formation of a laminar flow.
  • the sealing film 7 is welded, along its outer edge region 8 on the outer edge of the labyrinth plate 4, which is provided for this purpose with a bead 15 as energy directors.
  • the sealing film 7 is also welded to the inner, top planar labyrinth webs 5, which are arranged in concentric circles.
  • the outer, concentrically arranged webs are all equipped with an upstanding stinging dome 14.
  • the sealing film need not necessarily be impermeable to oxygen, unless the injection-molded version is produced in such a way that a barrier layer is introduced into the middle of the wall in a co-injection process. In this case, the film must have the same barrier properties.
  • the labyrinth plate 4 with the welded thereon sealing film 7 in a cross section.
  • this plate can also be made flat on its underside.
  • the labyrinth webs 5 are welded to the sealing foil 7 within the first half of the half of the labyrinth plate 4, while the outer webs do not touch the sealing foil 7.
  • the sealing film 7 is also with its peripheral edge region 8 with welded to the underlying edge of the labyrinth plate 4.
  • the spout hole 10 In the center of the labyrinth plate 4 can be seen the spout hole 10, arranged above the spout hole, the spout hole 10 spanning basket 11, and the downwardly directed round pin 12, which ensures a largely laminar beam when flowing out of the liquid from the top of the labyrinth plate 4 ,
  • the sealing foil 7 is perforated by the hydrostatic pressure of the liquid flowing from above into the capsule, the liquid flows through these perforation holes and afterwards against the radial direction towards the center of the labyrinth plate 4. Because the inner webs 5 are welded to the sealing film 7, the liquid must imperatively flow through the labyrinth formed by them and the resulting turbulence promotes the mixing of the liquid with the powder and the solution of the powder in the liquid.
  • FIG. 6 shows this capsule 1 for beverage powder in a cross section.
  • the area above the sealing film 7 is completely dense, in the case of a thermoformed capsule wall made of laminate plastic and oxygen-tight sealing film 7 even oxygen-tight and thus especially suitable for sensitive to oxygen reactive fillers.
  • the separately sprayed labyrinth plate 4 was inserted into the capsule wall 1 and welded to its lower edge. Thereafter, the sealing film 7 was inserted from above and welded to the peripheral edge and the inner labyrinth ridges 5 of the labyrinth plate 4.
  • the sealing foil 7 is merely inserted and welded along its edge 8 to the labyrinth plate 4, as well as with its inner labyrinth webs 5.
  • a closing foil can be, for example, an aluminum foil, which then closes the contents in an oxygen-tight manner, or else a simple plastic foil, if the oxygen-tightness does not have to be guaranteed, or else a laminate-plastic foil of the same or similar material as that on the bottom Labyrinth plate 4 welded sealing foil 7.
  • FIG. 7 another variant for the design of the labyrinth plate 4 is shown. It has in the inner region of its radius labyrinth ridges 5, which have a special shape. Their side walls form namely concave indentations, so that perpendicular to the Labrinthplatte 4 standing Kännel are formed.
  • the next inner labyrinth ridges 5 are also initially in plan rectangular blocks, which are also arranged with its longitudinal side along a concentric circle, but consistently between two outer, opposite labyrinth ridges of the outermost ring, so offset relative to the same with respect to the radial.
  • These labyrinth ridges 5 of this next inward ring now form each with its outer as well as on its inner side a standing Kännel, so a concave indentation.
  • the labyrinth ridges are arranged in each case between the labyrinth ridges of the preceding ring on the next inwardly following ring and on their outside they are concave.
  • labyrinth ridges 5 Arranged in the outer half of the radius of the labyrinth plate 4 labyrinth ridges 5 are formed of arcuate elements 13 with vertically upwardly projecting spikes 14, wherein the arcuate elements 13 are arranged on concentric circles, so that the liquid must flow around them. However, these arcuate elements 13 are substantially lower than the other labyrinth ridges. 5
  • FIG. 8 shows this labyrinth plate 4 with welded thereon sealing film 7 shown in a cross section.
  • the labyrinth plate 4 is here designed with a flat bottom 15.
  • the labyrinth bridges 5 in the first half of the radial labyrinth plate 4 are all the same high, so that the sealing film 7 welded on the same runs flat.
  • the sealing film 7 drops down in the radial direction and is welded with its edge 8 here with the upper side of the lower edge 3 of the cup 1.
  • a small gap remains free. As soon as the sealing foil 7 is subjected to sufficient hydraulic pressure from above, it is pressed downwards and then the piercing mandrels 14 pierce the sealing foil 7.
  • FIG. 9 shows an alternative alternative for the welding of the labyrinth plate 4 with the sealing film 7.
  • the bottom of the outer edge 8 of the sealing film 7 is welded directly to the top of the outer edge of the labyrinth plate 4.
  • this projecting edge 3 between the sealing film 7 and labyrinth plate 4 is welded, its causes by the deep drawing process manufacturing slightly varying edge strength that the distance between the sealing film 7 and the piercing spikes 14 is not the same everywhere and a defintive distance can not be met accurately , Therefore, a reliable piercing over the entire circumference is not ensured in this welding of the cup rim 3. With the welding shown here, however, can be remedied, because so the distances between the sealing film 7 and piercing spikes 14 are well defined and consistent.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Making Beverages (AREA)
  • Closures For Containers (AREA)
  • Manufacturing Of Micro-Capsules (AREA)

Abstract

The labyrinth capsule consists of a cup-shaped capsule wall (1), the capsule base formed from a labyrinth plate (4) having a labyrinth structure and puncturing pins (14) on its upper side. A hole (10) with a central round stud (12) is located in the labyrinth plate center. A sealing film (7) is placed on the labyrinth plate and is welded along its edge to the edge of the labyrinth plate. The capsule wall (1) is sealed on its upper edge (2) with a closure film, thereby closing in the filling. When liquid presses in through the closure film, the sealing film is pressed against the labyrinth plate. The puncturing pins puncture the sealing film. The liquid flows through the puncture holes to the labyrinth plate and drains out between the labyrinth ridges (5). Finally, a laminar liquid stream is formed from the round stud in the spout hole (10).

Description

Diese Erfindung betrifft eine Labyrinth-Kapsel, die ein Pulver zur Zubereitung eines Getränkes enthält. Solche Kapseln werden vor allem für die maschinelle Zubereitung von Kaffee verwendet. Eine solche Kapsel kann aber auch andere Pulver enthalten, etwa Brausetablettenpulver, Pulver für die Zubereitung von Sirupen oder Tee etc. Die Aufgabe der Kapsel ist es, dieses Pulver zwischenzulagern und dann durch die maschinelle Instant-Zubereitung für eine hervorragende Getränkequalität zu sorgen. Hierfür wird heisses oder kaltes Wasser mit Druck durch die Kapsel gepresst und von derselben zu einem möglichst laminar strömenden und zum Vermeiden von Spritzern zu einem nicht allzu schnell strömenden Ausguss-Strahl geformt. Im Kapsel-Innern soll das Wasser ausserdem innig mit dem Pulver vermischt werden, sodass dieses vollständig im durchströmenden Wasser gelöst wird.This invention relates to a labyrinth capsule containing a powder for making a beverage. Such capsules are mainly used for the machine preparation of coffee. However, such a capsule may also contain other powders, such as effervescent tablet powder, powders for the preparation of syrups or tea, etc. The task of the capsule is to temporarily store this powder and then to provide by the machine instant preparation for excellent beverage quality. For this purpose, hot or cold water is pressed with pressure through the capsule and formed by the same to a possible laminar flowing and to avoid spattering to a not too fast flowing spout jet. In the capsule interior, the water should also be intimately mixed with the powder so that it is completely dissolved in the water flowing through.

Herkömmliche Kapseln bestehen aus einem tiefgezogenen kleinen Kunststoffbecher, dessen Boden jedoch nach aussen bombiert ist und im Zentrum vorbereitet ist, von einem Dorn durchstochen zu werden, sodass ein rundes Ausgussloch entsteht. Auf den Becherboden ist innen eine Labyrinthpatte mit gezahntem Aussenrand eingelegt. Auf derjenigen Seite dieser Platte, die gegen den Boden hin gerichtet ist, bildet diese Platte eine Labyrinthstruktur mit zentralem Stechdorn zur Schaffung des Ausguss-Loches, während sie auf der nach oben gerichteten Seite eine Vielzahl von Stechdornen aufweist. Auf diese Platte ist sodann von oben eine Dichtfolie aus Aluminium oder Kunststoff eingelegt. Die ganze becherartige Kapsel wird nach dem Befüllen mit Pulver oben mit einer Siegelfolie verschlossen. Zum Zubereiten von Getränken mit der zugehörigen Maschine wird diese Siegelfolie angestochen und durch das entstandene Loch wird mit hohem Druck Brühflüssigkeit, meistens heisses Wasser, in die Kapsel gepresst. Die Flüssigkeit durchdringt das Pulver auf hohem Druck. Durch den hydrostatischen Druck wird die Dichtfolie an ihrem Rand gegen die Becherwand gedrückt und dichtet dort weiterhin ab. Jedoch durchdringen die Stechdorne auf der eingelegten Labyrinthplatte die Dichtfolie. Die Flüssigkeit mit dem darin gelösten Pulver durchströmt die vielen entstandenen Löcher in der Dichtfolie. Unterhalb der Dichtfolie strömt die Flüssigkeit radial gegen den Rand der Labyrinthplatte und umströmt derer Rand zwischen den Zahnlücken des gezahnten Randes. Hernach strömt die Flüssigkeit durch das Labyrinth auf der Platte hin zum Ausgussloch, das inzwischen durch Druck der Labyrinthplatte gegen den Becher- bzw. Kaspelboden hin in dessen Zentrum entstanden ist. Dort strömt die Flüssigkeit aus und bildet einen Strahl. Aus der WO 03/059778 A ist eine Labyrinthkapsel bekannt. Bei dieser ist die Dichtfolie längs ihres Randes nicht mit dem Rand der Labyrinthplatte verschweisst, weder direkt noch indirekt, und auch die Stege der Labyrinthstruktur sind nicht mit der Labyrinthplatte verschweisst. Die Labyrinthplatte wird vielmehr bloss in die Kapsel eingelegt und ist darin nicht sicher positioniert, wie das die Abbildungen 8 und 9 aufzeigen. Diese Labyrinthplatte kann sich daher unter dem Flüssigkeitsdruck der ihren Rand umströmenden Flüssigkeit im Becher etwas anheben. Das erweist sich als Nachteil.Conventional capsules consist of a deep-drawn small plastic cup, the bottom of which is outwardly cambered and prepared in the center to be pierced by a spike, creating a round spout. On the bottom of the cup, a labyrinth plate with serrated outer edge is inserted inside. On the side of this plate, which is directed against the ground, this plate forms a labyrinth structure with central Mandrel to create the spout hole while having a plurality of piercing spikes on the upwardly directed side. On this plate is then inserted from above a sealing foil made of aluminum or plastic. The whole cup-like capsule is closed after filling with powder at the top with a sealing film. For preparing drinks with the associated machine this sealing film is pierced and through the resulting hole is pressed at high pressure brewing liquid, usually hot water, into the capsule. The liquid penetrates the powder at high pressure. Due to the hydrostatic pressure, the sealing foil is pressed against the cup wall at its edge and continues to seal there. However, the piercing spikes penetrate the sealing foil on the inserted labyrinth plate. The liquid with the dissolved powder flows through the many holes formed in the sealing film. Below the sealing film, the liquid flows radially against the edge of the labyrinth plate and flows around its edge between the tooth gaps of the toothed edge. Thereafter, the liquid flows through the labyrinth on the plate to the spout hole, which has now been created by pressure of the labyrinth plate against the cup or Kasbelboden in its center. There, the liquid flows out and forms a jet. From the WO 03/059778 A is a labyrinth capsule known. In this, the sealing film is not welded along its edge with the edge of the labyrinth plate, either directly or indirectly, and also the webs of the labyrinth structure are not welded to the labyrinth plate. Rather, the labyrinth plate is merely inserted into the capsule and is not securely positioned therein, as shown in Figures 8 and 9. This labyrinth plate can therefore lift slightly under the fluid pressure of the liquid flowing around its edge in the cup. This proves to be a disadvantage.

Diese bisherigen Kapseln sind ausserdem aufwändig in der Konstruktion. Sie gewähren nicht immer einen schön laminar auströmenden Strahl, sondern es kommen oft schiefwinklig zur Rotationsachse austretende Strahlen oder Teilstrahlen vor. Auch die Durchmischung bzw. die Lösung des durchströmten Pulvers ist zuwenig konstant und daher nicht zufriedenstellend.These previous capsules are also complex in construction. They do not always give a beautiful laminar emanating beam, but there are often oblique to the axis of rotation emerging rays or partial beams. The mixing or the solution of the flow-through powder is too constant and therefore not satisfactory.

Gründe für diese Nachteile sind, dass die Stech-Labyrinthplatte nur in die Kapsel eingelegt ist und dort nicht sicher positioniert ist. Diese Platte kann sich daher etwas aus dem Zentrum heraus verschieben. Wenn das passiert, so wird der Rand nicht rundum gleichmässig umströmt. Als weitere Folge entsteht dann auch das Ausgussloch nicht genau im Zentrum des Kapselbodens, sondern ist seitlich etwas versetzt. Es entsteht dann ein schiefwinklig austretender Strahl. Die Durchströmung durch das Labyrinth ist nicht in jedem Fall sichergestellt. Weil die Labyrinthplatte nur eingelegt ist, kann sie sich unter dem Flüssigkeitsdruck der ihren Rand umströmenden Flüssigkeit im Becher etwas anheben. Das führt dazu, dass die Flüssigkeit unterhalb des Labyrinthes längs des Becherbodens zum Ausgussloch strömt, und nicht mehr wirklich durch das Labyrinth hindurchströmt. Es kann dann keine innige Durchmischung durch Verwirbelungen im Labyrinth erzielt werden. Entsprechend ist dann die gute Lösung des Pulvers in der durchströmenden Flüssigkeit nicht gewährleistet.Reasons for these disadvantages are that the lancing labyrinth plate is inserted only in the capsule and is not securely positioned there. This plate can therefore move slightly out of the center. When that happens, the edge does not flow all around evenly. As a further consequence, then the spout is not exactly in the center of the capsule floor, but is slightly offset laterally. It then creates a skewed outgoing beam. The flow through the labyrinth is not guaranteed in every case. Because the labyrinth plate is only inserted, it can lift slightly under the fluid pressure of the liquid flowing around its edge in the cup. As a result, the liquid flows below the labyrinth along the bottom of the cup to the spout, and does not really flow through the labyrinth. It can then be achieved no intimate mixing by turbulence in the labyrinth. Accordingly, then the good solution of the powder is not guaranteed in the flowing liquid.

Die Aufgabe der vorliegenden Erfindung ist es deshalb, eine Labyrinth-Kapsel für Getränkepulver zu schaffen, welche die obengenannten Nachteile überwindet.The object of the present invention is therefore to provide a labyrinth capsule for beverage powder, which overcomes the above-mentioned disadvantages.

Diese Aufgabe wird gelöst von einer Labyrinth-Kapsel für Getränkepulver, bestehend aus einer becherförmigen Kapsel, deren Kapselboden von einer Labyrinthpiatte-gebildet ist; welche auf ihrer Oberseite eine Labyrinthstruktur sowie Stechdorne aufweist, und im Zentrum ein Loch mit zentralem Rundzapfen, und auf welche Labyrinthplatte eine Dichtfolie aufgelegt und längs ihres Randes mit dem Rand der Labyrinthplatte direkt oder indirekt verschweisst ist, sowie mit den Stegen der Labyrinthstruktur in der ersten Radiushälfte der Labyrinthplatte verschweisst ist, wobei die Kapsel unter Einschluss der Befüllung an ihrem oberen Rand mit einer Schliessfolie versiegelt ist.This object is achieved by a labyrinth capsule for beverage powder, consisting of a cup-shaped capsule whose capsule bottom is formed by a Labyrinthpiatte; which has on its upper side a labyrinth structure and piercing spikes, and in the center of a hole with central round pin, and on which labyrinth plate a sealing foil placed and welded along its edge to the edge of the labyrinth plate directly or indirectly, and with the webs of the labyrinth structure in the first Half of the labyrinth plate is welded welded, wherein the capsule is sealed, including the filling at its upper edge with a closing foil.

In den Zeichnungen sind die Bestandteile dieser Labyrinth-Kapsel dargestellt, sowie auch die zusammengebaute Kapsel, und anhand dieser Zeichnungen wird sie nachfolgend anhand mehrerer Ausführungsvarianten beschrieben und ihre Funktion wird erklärt.
Es zeigt:

Figur 1:
Die becherartige Kapsel ohne Kapselboden;
Figur 2:
Die becherartige Kapsel ohne Kapselboden, mit eingesiegelter Labyrinthplatte;
Figur 3:
Die becherartige Kapsel ohne Kapselboden mit eingesiegelter Labyrinthplatte und darauf aufgeschweisster Dichtfolie;
Figur 4:
Die Labyrinthplatte von oben gesehen in einer vergrösserten Darstellung, mit darauf aufzuschweissender Dichtfolie;
Figur 5:
Die Labyrinthplatte mit darauf aufgeschweisster Dichtfolie in einem Querschnitt dargestellt;
Figur 6:
Die becherartige Kapsel mit Labyrinthplatte und Dichtfolie in einem Querschnitt dargestellt;
Figur 7:
Eine andere Variante für die Gestaltung der Labyrinthplatte;
Figur 8:
Diese Labyrinthplatte mit darauf aufgeschweisster Dichtfolie in einem Querschnitt dargestellt;
Figur 9:
Eine alternative Variante der Verscheissung von Labyrinthplatte mit der Dichtfolie.
In the drawings, the components of this labyrinth capsule are shown, as well as the assembled capsule, and with reference to these drawings, it will be described below with reference to several embodiments and their function will be explained.
It shows:
FIG. 1:
The cup-like capsule without capsule bottom;
FIG. 2:
The cup-like capsule without capsule bottom, with sealed labyrinth plate;
FIG. 3:
The cup-like capsule without capsule bottom with sealed labyrinth plate and thereon welded sealing film;
FIG. 4:
The labyrinth plate seen from above in an enlarged view, with aufzuschweissender sealing foil;
FIG. 5:
The labyrinth plate with welded thereon sealing film shown in a cross section;
FIG. 6:
The cup-like capsule with labyrinth plate and sealing film shown in a cross section;
FIG. 7:
Another variant for the design of the labyrinth plate;
FIG. 8:
This labyrinth plate with welded thereon sealing film shown in a cross section;
FIG. 9:
An alternative variant of Verscheissung labyrinth plate with the sealing film.

Die Figur 1 zeigt das erste Bestandteil dieser insgesamt aus vier Teilen bestehenden Kapsel für Getränkepulver, zum Beispiel für Kaffee oder für ein Brausetablettenpulver. Dieses erste Bestandteil bildet die konische Wand 1 einer becherartigen Kapsel, mit auskragendem Rand 2 an der Oberseite und nach innen auskragendem Rand 3 an der Unterseite. Dieses Bestandteil wird in den meisten Fällen im Tiefziehverfahren aus einem Laminatkunststoff mit Barrierefunktion hergestellt, welcher die geforderte Gasdichtigkeit gewährleisten kann. Auf den auskragenden Rändern 2,3 verläuft vorzugsweise je ein Wulst als Energierichtungsgeber ERG für das spätere Aufschweissen einer Dichtfolie auf den oberen Rand 2 und einer Labyrinthplatte auf den unteren Rand 3. Wenn keine Gasdichtigkeit, namentlich keine absolute Sauerstoffdichtigkeit für das Füllgut gefordert wird, so kann der Becher auch zusammen mit dem Boden als einstückiges Spritzteil gefertigt werden. Der Boden bildet in diesen Fall gleichzeitig die Labyrinthplatte, wie das noch klar wird. In diesem Fall weist dann der Boden, welcher die Labyrinthplatte bildet, an seinem Rand eine Schulter für das Aufschweissen einer Dichtfolie auf, und diese Schulter kann mit einem Wulst als Energierichtungsgeber ERG für die aufzuschweissende Dichtfolie versehen sein.The FIG. 1 shows the first component of this total of four parts capsule for beverage powder, for example for coffee or an effervescent powder. This first component forms the conical wall 1 of a cup-like capsule, with cantilever edge 2 at the top and inwardly projecting edge 3 at the bottom. This ingredient is used in most Cases made by deep-drawing of a laminate plastic with barrier function, which can ensure the required gas-tightness. On the cantilevered edges 2, 3, a bead preferably runs as energy directors ERG for later welding of a sealing film on the upper edge 2 and a labyrinth plate on the lower edge 3. If no gas tightness, namely no absolute oxygen tightness for the filling material is required, so The cup can also be made together with the bottom as a one-piece molded part. The bottom forms in this case at the same time the labyrinth plate, as will become clear. In this case, then the bottom, which forms the labyrinth plate, at its edge has a shoulder for the welding of a sealing film, and this shoulder may be provided with a bead as energy directors ERG for the sealing film aufzuschweissende.

In Figur 2 sieht man die Kapsel mit der Labyrinthplatte 4 als Kapselboden. Entweder handelt es sich dabei - wenn die Kapselwand 1 tiefgezogen ist - um ein gesondert hergestelltes Spritzteil, welches dann als Boden in die Kapselwandung 1 eingeschweißt wird, und wozu die Labyrinthplatte 4 auf den unten nach innen auskragenden Rand 3 der Kapsel 1 aufgeschweisst ist, oder aber im andern Fall ist die Labyrinthplatte 4 in einem Stück mit der Kapselwand 1 als Spritzteil gefertigt. In jedem Fall aber weist diese Labyrinthplatte 4, welche letztlich den Kapselboden bildet, auf ihrer Oberseite ein Labyrinth auf, indem an ihrer Oberseite zum Bespiel wie hier gezeigt eine Anzahl konzentrisch angeordnete Labyrinthstege 5 angeformt sind, die alle gegen oben abstehen. Im äusseren peripheren Bereich der Labyrinthplatte 4 sind die Stege 5 mit einem zusätzlichen, nach oben ragenden Stechdorn 6 ausgerüstet.In FIG. 2 you can see the capsule with the labyrinth plate 4 as a capsule bottom. Either it is - when the capsule wall 1 is deep drawn - to a separately produced molded part, which is then welded as a bottom in the capsule wall 1, and why the labyrinth plate 4 is welded to the downwardly inwardly projecting edge 3 of the capsule 1, or but in the other case, the labyrinth plate 4 is made in one piece with the capsule wall 1 as a molded part. In any case, this labyrinth plate 4, which ultimately forms the capsule bottom, on its top a labyrinth by a number of concentrically arranged labyrinth ridges 5 are formed on its upper side for example as shown here, all of which protrude upwards. In the outer peripheral region of the labyrinth plate 4, the webs 5 are equipped with an additional, upwardly projecting lance 6.

Ausgehend von der Ansicht in Figur 2 wird auf die Labyrinthplatte 4 eine Dichtfolie 7 aufgeschweißt, sodass sich anschliessend die Kapsel wie in Figur 3 dargestellt präsentiert. Die Schweissung erfolgt längs des peripheren Randes 8 der Dichtfolie, und zusätzlich an den gestrichelt eingezeichneten Stellen 9 der Dichtfolie, indem die Dichtfolie 7 dort auf die darunterliegenden Labyrinthstege 5 aufgeschweißt ist.Starting from the view in FIG. 2 is welded onto the labyrinth plate 4, a sealing film 7, so that then the capsule as in FIG. 3 presented presented. The welding takes place along the peripheral edge 8 of the sealing film, and in addition to the dashed lines 9 points of the sealing film by the sealing film 7 is welded there to the underlying labyrinth webs 5.

In Figur 4 ist der Aufbau der Labyrinthplatte 4 in vergrösserter Ansicht dargestellt, sowie die darauf aufzuschweissende Dichtfolie 7. Im Zentrum der Labyrinthplatte 4 weist diese ein Ausgussloch 10 auf, über dem ein Korb 11 angeformt ist, der das Loch 10 überspannt und in dessen Zentrum sich ein Rundzapfen 12 nach unten durch das Loch 10 hindurch erstreckt. Die Flüssigkeit strömt dann durch den Korb 11 in das Ausgussloch 10, und weil in dessen Zentrum ein Rundzapfen 12 steht, wird dieser umströmt und beim Austritt kann der Flüssigkeitsstrahl sich insgesamt verjüngen und es entsteht deswegen ein weitgehend laminarer Flüssigkeitsstrahl. Der Rundzapfen 12 trägt also zur Bildung einer laminaren Strömung bei. Auf diese Labyrinthplatte 4 wird die Dichtfolie 7 aufgeschweisst, und zwar längs ihres äusseren Randbereichs 8 auf den äusseren Rand der Labyrinthplatte 4, der hierzu mit einem Wulst 15 als Energierichtungsgeber versehen ist. Ausserdem ist die Dichtfolie 7 auch mit den inneren, oben ebenen Labyrinthstegen 5 verschweisst, die in konzentrischen Kreisen angeordnet sind. Die äusseren, konzentrisch angeordneten Stege hingegen sind alle mit einem nach oben ragenden Stechdom 14 ausgerüstet. Bei auf die Labyrinthplatte 4 aufgeschweisster Dichtfolie 7 bleibt diese zunächst unversehrt. Sie besteht selbst aus einem Laminatkunststoff, ist sauerstoffdicht und dichtet zusammen mit der Kapselwand 1, wenn diese tiefgezogen ist, das Füllgut sauerstoffdicht ab. Wenn die Kapselwand 1 und die Labyrinthplatte 4 hingegen gespritzt sind, so braucht die Dichtfolie auch nicht zwingend sauerstoffdicht zu sein, es sei denn die spritzgegossene Version ist so hergestellt, dass in einem Co-Injektionsverfahren eine Barriereschicht in die Wandungsmitte eingebracht ist. In diesem Fall muss die Folie die gleichen Barriereeigenschaften aufweisen.In FIG. 4 In the center of the labyrinth plate 4, this has a spout hole 10, on which a basket 11 is formed, which spans the hole 10 and in the center of which is a round pin 12 extends down through the hole 10 therethrough. The liquid then flows through the basket 11 in the spout hole 10, and because in the center of a round pin 12 is, it is flowed around and at the outlet of the liquid jet can be a total taper and therefore there is a largely laminar liquid jet. The round pin 12 thus contributes to the formation of a laminar flow. On this labyrinth plate 4, the sealing film 7 is welded, along its outer edge region 8 on the outer edge of the labyrinth plate 4, which is provided for this purpose with a bead 15 as energy directors. In addition, the sealing film 7 is also welded to the inner, top planar labyrinth webs 5, which are arranged in concentric circles. The outer, concentrically arranged webs, however, are all equipped with an upstanding stinging dome 14. When welded on the labyrinth plate 4 sealing film 7, this initially remains intact. It itself consists of a laminate plastic, is oxygen-tight and seals together with the capsule wall 1, when this is deep drawn, the contents oxygen-tight. On the other hand, when the capsule wall 1 and the labyrinth plate 4 are injection-molded, the sealing film need not necessarily be impermeable to oxygen, unless the injection-molded version is produced in such a way that a barrier layer is introduced into the middle of the wall in a co-injection process. In this case, the film must have the same barrier properties.

In Figur 5 sieht man die Labyrinthplatte 4 mit der darauf aufgeschweissten Dichtfolie 7 in einem Querschnitt. Anstelle einer leicht konischen Platte wie hier gezeigt kann diese Platte auf ihrer Unterseite auch eben ausgeführt sein. Wie man sieht sind die Labyrinthstege 5 innerhalb der ersten Radiushälfte der Labyrinthplatte 4 mit der Dichtfolie 7 verschweisst, während die äusseren Stege die Dichtfolie 7 nicht berühren. Auf diesen äusseren Stegen sind dafür nach oben ragende Stechdorne 14 angeformt, welche knapp vor der Unterseite der Dichtfolie 7 enden. Die Dichtfolie 7 ist ausserdem mit ihrem peripheren Randbereich 8 mit dem darunter liegenden Rand der Labyrinthplatte 4 verschweisst. Im Zentrum der Labyrinthplatte 4 erkennt man das Ausgussloch 10, den über dem Ausgussloch angeordneten, das Ausgussloch 10 überspannenden Korb 11, sowie den darin nach unten gerichteten Rundzapfen 12, welcher für einen weitgehend laminaren Strahl beim Ausströmen der Flüssigkeit aus der Oberseite der Labyrinthplatte 4 sorgt. Die Flüssigkeit strömt also, sobald die Dichtfolie 7 durch den hydrostatischen Druck der von oben in die Kapsel einströmenden Flüssigkeit perforiert wird, durch diese Perforationslöcher und hernach entgegen der radialen Richtung gegen das Zentrum der Labyrinthplatte 4 hin. Weil die inneren Stege 5 mit der Dichtfolie 7 verschweisst sind, muss die Flüssigkeit zwingend durch das von ihnen gebildete Labyrinth strömen und durch die darin entstehenden Verwirbelungen wird die Durchmischung der Flüssigkeit mit dem Pulver und die Lösung des Pulvers in der Flüssigkeit gefördert.In FIG. 5 you can see the labyrinth plate 4 with the welded thereon sealing film 7 in a cross section. Instead of a slightly conical plate as shown here, this plate can also be made flat on its underside. As can be seen, the labyrinth webs 5 are welded to the sealing foil 7 within the first half of the half of the labyrinth plate 4, while the outer webs do not touch the sealing foil 7. On this outer webs upstanding lances 14 are formed, which ends just before the bottom of the sealing film 7. The sealing film 7 is also with its peripheral edge region 8 with welded to the underlying edge of the labyrinth plate 4. In the center of the labyrinth plate 4 can be seen the spout hole 10, arranged above the spout hole, the spout hole 10 spanning basket 11, and the downwardly directed round pin 12, which ensures a largely laminar beam when flowing out of the liquid from the top of the labyrinth plate 4 , Thus, as soon as the sealing foil 7 is perforated by the hydrostatic pressure of the liquid flowing from above into the capsule, the liquid flows through these perforation holes and afterwards against the radial direction towards the center of the labyrinth plate 4. Because the inner webs 5 are welded to the sealing film 7, the liquid must imperatively flow through the labyrinth formed by them and the resulting turbulence promotes the mixing of the liquid with the powder and the solution of the powder in the liquid.

Die Figur 6 zeigt diese Kapsel 1 für Getränkepulver in einem Querschnitt. Der Bereich oberhalb der Dichtfolie 7 ist vollständig dicht, im Falle einer tiefgezogenen Kapselwand aus Laminatkunststoff und sauerstoffdichter Dichtfolie 7 sogar sauerstoffdicht und somit speziell für heikel auf Sauerstoff reagierende Füllstoffe geeignet. Zuerst wurde die gesondert im Spritzverfahren hergestellte Labyrinthplatte 4 in die Kapselwand 1 eingesetzt und mit deren unterem Rand verschweisst. Hernach wurde die Dichtfolie 7 von oben eingesetzt und auf den peripheren Rand und die inneren Labyrinthstege 5 der Labyrinthplatte 4 geschweisst. Wenn andrerseits die Kapsel zusammen mit der Labyrinthplatte 4 im Spritzverfahren hergestellt ist, so wird bloss noch die Dichtfolie 7 eingesetzt und längs ihres Randes 8 mit der Labyrinthplatte 4 verschweisst, wie auch mit deren inneren Labyrinthstegen 5. Nach dem Befüllen der Kapsel 1 mit dem Getränkepulver wird der obere Rand 2 der Kapsel 1 mit einer Schliessfolie versiegelt. Diese Schliessfolie kann zum Beispiel eine Aluminiumfolie sein, die dann den Inhalt sauerstoffdicht verschliesst, oder aber eine einfache Kunststoff-Folie, wenn die Sauerstoffdichtigkeit nicht gewährleistet werden muss, oder aber eine Laminat-Kunststoff-Folie aus gleichem oder ähnlichem Material wie die unten auf die Labyrinthplatte 4 aufgeschweisste Dichtfolie 7.The FIG. 6 shows this capsule 1 for beverage powder in a cross section. The area above the sealing film 7 is completely dense, in the case of a thermoformed capsule wall made of laminate plastic and oxygen-tight sealing film 7 even oxygen-tight and thus especially suitable for sensitive to oxygen reactive fillers. First, the separately sprayed labyrinth plate 4 was inserted into the capsule wall 1 and welded to its lower edge. Thereafter, the sealing film 7 was inserted from above and welded to the peripheral edge and the inner labyrinth ridges 5 of the labyrinth plate 4. If, on the other hand, the capsule is produced together with the labyrinth plate 4 by injection molding, the sealing foil 7 is merely inserted and welded along its edge 8 to the labyrinth plate 4, as well as with its inner labyrinth webs 5. After filling the capsule 1 with the beverage powder the upper edge 2 of the capsule 1 is sealed with a closing foil. This closing foil can be, for example, an aluminum foil, which then closes the contents in an oxygen-tight manner, or else a simple plastic foil, if the oxygen-tightness does not have to be guaranteed, or else a laminate-plastic foil of the same or similar material as that on the bottom Labyrinth plate 4 welded sealing foil 7.

In Figur 7 ist eine andere Variante für die Gestaltung der Labyrinthplatte 4 gezeigt. Sie weist im innern Bereich ihres Radius Labyrinthstege 5 auf, welche eine besondere Form aufweisen. Deren Seitenwände bilden nämlich konkave Einbuchtungen, sodass senkrecht auf der Labrinthplatte 4 stehende Kännel gebildet sind. Die Labyrinthstege 5 auf dem mittleren Ring, etwa auf halber Höhe des Radius, bilden im Grundriss zunächst rechteckige Klötzchen, welche mit ihrer Längsseite längs eines konzentrischen Kreises auf der Labyrinthplatte 4 angeordnet sind. Die Innenseiten dieser Labyrinthstege 5 bilden sodann je einen senkrecht auf der Labyrinthplatte 4 stehenden Kännel. Die nächst innern Labyrinthstege 5 sind ebenfalls zunächst im Grundriss rechteckige Klötzchen, die ebenfalls mit ihrer Längsseite längs eines konzentrischen Kreises angeordnet sind, jedoch durchwegs zwischen zwei äusseren, gegenüberliegenden Labyrinthstegen des äussersten Ringes, also gegenüber denselben in Bezug auf die Radiale versetzt. Diese Labyrinthstege 5 dieses nach innen nächstfolgenden Ringes bilden nun mit ihrer äusseren wie auch auf ihrer inneren Seite je einen stehenden Kännel, also eine konkave Einbuchtung. Auf dem nach innen nächstfolgenden Ring sind die Labyrinthstege wiederum jeweils zwischen den Labyrinthstegen des vorangehenden Ringes angeordnet und auf ihrer Aussenseite sind sie konkav geformt. Strömt nun eine Flüssigkeit entgegen der Radialen auf der Labyrinthplatte 4 gegen deren Zentrum hin, so wird sie durch diese drei Ringe von Labyrinthstegen 5 und ihre konkaven Aussen- und Innen-Seiten in eine mäanderförmige Strömung gezwungen. Diese Strömung ist einer innigen Vermischung der Flüssigkeit mit dem Pulver förderlich. Die in der äusseren Hälfte des Radius der Labyrinthplatte 4 angeordneten Labyrinthstege 5 sind aus bogenförmigen Elementen 13 mit senkrecht nach oben ragenden Stechdornen 14 gebildet, wobei die bogenförmigen Elemente 13 auf konzentrischen Kreisen angeordnet sind, sodass die Flüssigkeit auch um diese herumströmen muss. Diese bogenförmigen Elemente 13 sind allerdings wesentlich niedriger als die übrigen Labyrinthstege 5.In FIG. 7 another variant for the design of the labyrinth plate 4 is shown. It has in the inner region of its radius labyrinth ridges 5, which have a special shape. Their side walls form namely concave indentations, so that perpendicular to the Labrinthplatte 4 standing Kännel are formed. The labyrinth ridges 5 on the middle ring, approximately halfway up the radius, initially form rectangular blocks in the plan view, which are arranged with their longitudinal side along a concentric circle on the labyrinth plate 4. The insides of these labyrinth ridges 5 then each form a perpendicular to the labyrinth plate 4 Kännel. The next inner labyrinth ridges 5 are also initially in plan rectangular blocks, which are also arranged with its longitudinal side along a concentric circle, but consistently between two outer, opposite labyrinth ridges of the outermost ring, so offset relative to the same with respect to the radial. These labyrinth ridges 5 of this next inward ring now form each with its outer as well as on its inner side a standing Kännel, so a concave indentation. In turn, the labyrinth ridges are arranged in each case between the labyrinth ridges of the preceding ring on the next inwardly following ring and on their outside they are concave. If a liquid now flows against the radial on the labyrinth plate 4 towards its center, it is forced into a meandering flow by these three rings of labyrinth webs 5 and their concave outer and inner sides. This flow is conducive to intimate mixing of the liquid with the powder. Arranged in the outer half of the radius of the labyrinth plate 4 labyrinth ridges 5 are formed of arcuate elements 13 with vertically upwardly projecting spikes 14, wherein the arcuate elements 13 are arranged on concentric circles, so that the liquid must flow around them. However, these arcuate elements 13 are substantially lower than the other labyrinth ridges. 5

Die Figur 8 zeigt diese Labyrinthplatte 4 mit darauf aufgeschweisster Dichtfolie 7 in einem Querschnitt dargestellt. Wie man erkennt, ist die Labyrinthplatte 4 hier mit einem ebenen Boden 15 ausgeführt. Die Labyrinthstege 5 in der ersten Radiushälfte der Labyrinthplatte 4 sind alle gleichhoch, sodass die Dichtfolie 7 auf dieselben aufgeschweisst eben verläuft. Aussen fällt die Dichtfolie 7 in radialer Richtung nach unten ab und ist mit ihrem Rand 8 hier mit der Oberseite des unteren Randes 3 des Bechers 1 verschweisst. Zwischen den Stechdornen 14 und der Unterseite der Dichtfolie 7 bleibt ein kleiner Zwischenraum frei. Sobald die Dichtfolie 7 von oben mit genügend Hydrodruck beaufschlagt wird, wird sie nach unten gedrückt und dann stechen die Stechdorne 14 die Dichtfolie 7 auf.The FIG. 8 shows this labyrinth plate 4 with welded thereon sealing film 7 shown in a cross section. As can be seen, the labyrinth plate 4 is here designed with a flat bottom 15. The labyrinth bridges 5 in the first half of the radial labyrinth plate 4 are all the same high, so that the sealing film 7 welded on the same runs flat. On the outside, the sealing film 7 drops down in the radial direction and is welded with its edge 8 here with the upper side of the lower edge 3 of the cup 1. Between the piercing thorns 14 and the underside of the sealing film 7 a small gap remains free. As soon as the sealing foil 7 is subjected to sufficient hydraulic pressure from above, it is pressed downwards and then the piercing mandrels 14 pierce the sealing foil 7.

Die Figur 9 schliesslich zeigt noch eine alternative Variante für die Verschweissung der Labyrinthplatte 4 mit der Dichtfolie 7. Hier ist nämlich die Unterseite des äusseren Randes 8 der Dichtfolie 7 direkt mit der Oberseite des äusseren Randes der Labyrinthplatte 4 verschweisst. Das bietet den Vorteil, dass die leicht variierenden Stärken des unteren, nach innen auskragenden Randes 3 des Bechers 1 keine Rolle mehr spielen können. Dieser untere Rand 3 des Bechers 1 ist nämlich dann wie hier gezeigt auf die Oberseite des Randes der Dichtfolie 7 aufgeschweisst. Wenn hingegen dieser auskragende Rand 3 zwischen Dichtfolie 7 und Labyrinthplatte 4 verschweisst wird, so bewirkt seine durch das Tiefziehenverfahren herstellungsbedingt leicht variierende Randstärke, dass der Abstand zwischen der Dichtfolie 7 und den Stechdornen 14 nicht überall gleich ist und eine defintive Distanz nicht genau eingehalten werden kann. Daher ist bei dieser Einschweissung des Becherrandes 3 ein zuverlässiges Aufstechen über den ganzen Umfang nicht sichergestellt. Mit der hier gezeigten Verschweissung kann aber Abhilfe geschaffen werden, denn so sind die Abstände zwischen Dichtfolie 7 und Stechdornen 14 genau definiert und gleichbleibend.The FIG. 9 Finally, shows an alternative alternative for the welding of the labyrinth plate 4 with the sealing film 7. Here namely the bottom of the outer edge 8 of the sealing film 7 is welded directly to the top of the outer edge of the labyrinth plate 4. This offers the advantage that the slightly varying thicknesses of the lower, inwardly projecting edge 3 of the cup 1 can no longer play a role. Namely, this lower edge 3 of the cup 1 is then welded onto the upper side of the edge of the sealing film 7 as shown here. If, however, this projecting edge 3 between the sealing film 7 and labyrinth plate 4 is welded, its causes by the deep drawing process manufacturing slightly varying edge strength that the distance between the sealing film 7 and the piercing spikes 14 is not the same everywhere and a defintive distance can not be met accurately , Therefore, a reliable piercing over the entire circumference is not ensured in this welding of the cup rim 3. With the welding shown here, however, can be remedied, because so the distances between the sealing film 7 and piercing spikes 14 are well defined and consistent.

Beim Einpressen von Flüssigkeit durch die Schliessfolie wird die Dichtfolie 7 auf die Labyrinthplatte 4 gepresst. Die Stechdorne 14 durchstechen die Dichtfolie 7. Die Flüssigkeit durchströmt die aufgestochenen Löcher und hernach strömt sie auf der Unterseite der Labyrinthplatte 4 durch das Labyrinth aus den Labyrinthstegen 5. Schliesslich wird vom Rundzapfen 12 im Ausgussloch 10 ein laminarer Flüssigkeitsstrahl gebildet. Diese Kapsel für Getränkepulver sorgt für eine immer gleich bleibende gute Vermischung und Lösung des Pulvers in der durchströmenden Flüssigkeit. Sie erzeugt einen weitgehend laminaren Flüssigkeitsstrahl und ist erst noch einfach in der Herstellung, besonders wenn sie bloss aus einem Spritzteil und einer darauf einzuschweissenden Dichtfolie 7 besteht.When pressing in liquid through the closing film, the sealing film 7 is pressed onto the labyrinth plate 4. The piercing spikes 14 pierce the sealing foil 7. The liquid flows through the pierced holes and afterwards it flows on the underside of the labyrinth plate 4 through the labyrinth of the labyrinth webs 5. Finally, the round pin 12 in the spout 10 a laminar liquid jet is formed. This capsule for beverage powder ensures an always consistent good mixing and solution of the powder in the flowing liquid. It produces a largely laminar liquid jet and is still only in the production, especially if it consists only of a molded part and a sealing film to be welded thereto 7.

Claims (8)

  1. A labyrinth capsule for drink powder, comprising a cup-shaped capsule (1), the capsule base of which is formed by a labyrinth plate (4) which has a labyrinth structure and piercing spikes (14) on its upper side, and a hole (10) with a central round stud (12), which ensures to a large extent a laminar flow when liquid is pouring out of the upper surface of the labyrinth plate (4), and onto which labyrinth plate (4) a sealing film (7) is placed, whereby the capsule (1) is sealed at its upper edge (2) with a closing film, characterized in that the sealing film (7) is directly or indirectly welded with the edge of the labyrinth plate (4) along said edge, as well as also welded to the webs of the labyrinth structure in the first half of the radius of the labyrinth plate (4).
  2. The labyrinth capsule for drink powder as claimed in claim 1, characterized in that it comprises a cup-shaped capsule (1) without a capsule base and made from a thermoformed plastic laminate film, with there being formed on the lower edge of the capsule (1) an inwardly projecting edge (3) to which a labyrinth plate (4) with a sealing film (7) is welded as the capsule base and is sealed by a sealing film (7) being placed onto the labyrinth plate and being welded with the lower side of its edge (8) to the upper side of the edge of the labyrinth plate (4) and then being welded with the upper side of the edge of the sealing film (7) to the lower side of the inwardly projecting edge (3) of the capsule (1).
  3. The labyrinth capsule for drink powder as claimed in claim 1, characterized in that it comprises a cup-shaped capsule (1) without a capsule base and made from a thermoformed plastic laminate film, with there being formed on the lower edge of the capsule (1) an inwardly projecting edge (3), the lower side of which is welded to the upper side of the edge of the labyrinth plate (4) such that the latter forms the capsule base, and in that the upper side of the inwardly projecting edge (3) is welded to the lower side of the edge of a sealing film (7).
  4. The labyrinth capsule for drink powder as claimed in one of the preceding claims, characterized in that the cup-shaped capsule (1) without a capsule base, and the sealing film (7) are composed of a thermoformed, oxygen-tight plastic laminate film.
  5. The labyrinth capsule for drink powder as claimed in claim 1, characterized in that the cup-shaped capsule (1) comprising a capsule wall and a capsule base in the form of the labyrinth plate (4) is manufactured in the form of a single piece as an injection molded part.
  6. The labyrinth capsule for drink powder as claimed in one of the preceding claims, characterized in that labyrinth webs (5) which are mutually offset with respect to the radial direction are integrally formed on the upper side of the labyrinth plate (4) in the first half of its radius, and curved annular elements (13) which are mutually offset with respect to the radial direction and each have an upwardly projecting piercing spike (14) are integrally formed in the second half of the radius of the labyrinth plate.
  7. The labyrinth capsule for drink powder as claimed in claim 6, characterized in that the labyrinth webs (5) and curved annular elements (13) are integrally formed on concentric circles.
  8. The labyrinth capsule for drink powder as claimed in claim 6, characterized in that the labyrinth plate (4) has a flat base.
EP08709807A 2008-02-06 2008-02-06 Labyrinth capsule for drink powder Not-in-force EP2238050B1 (en)

Applications Claiming Priority (1)

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PCT/IB2008/000321 WO2008087553A1 (en) 2007-01-18 2008-02-06 Labyrinth capsule for drink powder

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EP2238050A1 EP2238050A1 (en) 2010-10-13
EP2238050B1 true EP2238050B1 (en) 2011-04-20

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EP (1) EP2238050B1 (en)
CN (1) CN102036885B (en)
AT (1) ATE506292T1 (en)
DE (1) DE502008003326D1 (en)
WO (1) WO2008087553A1 (en)

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US20100307930A1 (en) 2010-12-09
EP2238050A1 (en) 2010-10-13
WO2008087553A8 (en) 2010-09-16
WO2008087553A1 (en) 2008-07-24
US8499682B2 (en) 2013-08-06
ATE506292T1 (en) 2011-05-15
CN102036885A (en) 2011-04-27
CN102036885B (en) 2012-07-04
DE502008003326D1 (en) 2011-06-01

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