EP2900572B1 - Single serve capsule comprising a filter element connected thereto by sealing - Google Patents

Single serve capsule comprising a filter element connected thereto by sealing Download PDF

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Publication number
EP2900572B1
EP2900572B1 EP13771121.4A EP13771121A EP2900572B1 EP 2900572 B1 EP2900572 B1 EP 2900572B1 EP 13771121 A EP13771121 A EP 13771121A EP 2900572 B1 EP2900572 B1 EP 2900572B1
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EP
European Patent Office
Prior art keywords
filter element
single serve
serve capsule
capsule
diameter
Prior art date
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EP13771121.4A
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German (de)
French (fr)
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EP2900572A1 (en
Inventor
Marc KRÜGER
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.)
K Fee System GmbH
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K Fee System GmbH
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Publication date
Application filed by K Fee System GmbH filed Critical K Fee System GmbH
Priority to RS20170082A priority Critical patent/RS55635B1/en
Priority to PL13771121T priority patent/PL2900572T3/en
Priority to SI201330503A priority patent/SI2900572T1/en
Publication of EP2900572A1 publication Critical patent/EP2900572A1/en
Application granted granted Critical
Publication of EP2900572B1 publication Critical patent/EP2900572B1/en
Priority to HRP20170156TT priority patent/HRP20170156T1/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
    • B65D85/8061—Filters
    • 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

Definitions

  • the present invention relates to a portion capsule for the manufacture of a drink having a side wall and a bottom, which together define a space, wherein a filter element is sealed to the bottom within the space.
  • Such portion capsules are known from the prior art and are used for example for the production of coffee or tea or coffee-like beverages such as espresso.
  • Coffee or tea or coffee-like beverages such as espresso.
  • in the printing pens EP 1 792 850 B1 .
  • US 2012/0070551 A1 and US 2003/0172813 A1 Portion capsules for coffee and espresso preparation revealed.
  • the portion capsules are preferably frusto-conical or cylindrical in shape and are produced, for example, from a thermoformed plastic film or by plastic injection molding. They usually have a side wall with a peripheral flange, an open filling side for a beverage substrate to be extracted and / or dissolved beverage substrate and a capsule bottom, wherein between the beverage substrate and the capsule bottom is supported against the capsule bottom filter element. After insertion and sealing of the filter element to the portion capsule bottom and the filling of the beverage substrate, the portion capsule is closed with a lid film, which is sealed or glued, for example, on the flange.
  • the portion capsule is introduced into a brewing chamber of a preparation device. Before, after or during the introduction of the portion capsule into the brewing chamber, the portion capsule is preferably opened on its bottom side, and after the brewing chamber has been sealed, the filling side of the portion capsule closed with a closing foil is pierced by piercing means. Subsequently, preparation liquid, preferably hot water, is conveyed under pressure into the portion capsule. The preparation liquid flows through the beverage substrate and extracts and / or dissolves the substances required for the beverage production from the beverage substrate. For the preparation of an espresso, for example, a brewing water pressure of up to 20 bar acts on the coffee powder to extract the essential oils.
  • the portion capsules according to the prior art have the disadvantage that the beverage produced has comparatively much foam on its surface.
  • the filter element is disc-shaped and has a circular cross-section.
  • the sealed seam which connects the filter element to the bottom of the portion capsule in a material-tight manner, is preferably attached by ultrasonic welding.
  • the filter element is liquid impermeable after sealing in the region of the sealing seam.
  • the inner diameter of the sealed seam is 67 - 77% of the diameter of the filter element.
  • the width of the sealed seam is 1 - 1.5 millimeters.
  • the bottom of the portion capsule has a substantially planar portion which is circular in shape and whose outer diameter is 84-94% of the diameter of the filter element.
  • the outer circumference of the flat portion is preferably followed by a bead, through which the flat portion is arranged slightly spaced from a possible display.
  • the bead also forms the transition between the flat bottom and the side wall and gives the portion capsule stability.
  • the filter element extends into the region of the bead and covers it at least partially without touching it.
  • the bottom has a recess which is so large that substantially no pressure loss is produced by the outflow / throughflow of the beverage through this recess.
  • This recess is preferably already in the Capsule bottom incorporated before the filter element is sealed to the capsule bottom.
  • the recess is preferably closed before the preparation process with a film or the like, which can be removed or pierced by a piercing.
  • the diameter of the filter element is smaller, in particular 1 - 5% smaller than the inner dimension of the portion capsule at ground level.
  • the filter element has a felt structure.
  • this is a needled felt structure.
  • the filter element consists of at least one felt structure and a support structure, in particular a fabric structure, wherein particularly preferably the felt structure makes up at least a portion of the volume of the support structure.
  • the felt structure extends over the entire cross section of the support structure, but more preferably over only a portion of the height.
  • the felt structure is positively, positively and / or materially connected to the support structure.
  • the filter element has two or more felt structures, which are preferably separated from each other by the support structure. The thickness of the two felt structures may be the same or different.
  • a felt structure facing the powder or tea is thinner than the felt structure facing the capsule bottom, or vice versa.
  • the surface of the felt structure is treated, for example, heat-treated, for example, to fix loose fibers.
  • the filter element having a felt structure is merely inserted into the capsule, in particular on its bottom.
  • the filter element can also be connected to the capsule, in particular its bottom, in particular materially bonded. When perforating the perforating agent can penetrate into this filter element.
  • a plurality of filter elements, which have one or more felt structures and a carrier structure are arranged one above the other in the capsule and possibly joined together.
  • a filter element having a support structure, in particular a fabric structure, and a felt structure is produced, for example, by providing a fabric structure consisting of longitudinal and transverse threads.
  • a felt in particular a needle felt
  • fiber units are preferably selected from 0.8 to 7 dtex.
  • the connection of the individual fibers together to form a felt and / or its anchoring in the support structure preferably takes place through the production process of needling.
  • needles are inserted with reverse barbs in the submitted fiber package at high speed and pulled out again. The barbs cause the fibers to overflow a variety of resulting loops entwined with each other and / or with the carrier fabric.
  • the support element comprising one or more felt structures preferably comprises a mass occupancy (also referred to as grammage or basis weight) between 100 and 800 grams per square meter, more preferably between 200 and 650 grams per square meter, and most preferably substantially 150-250 grams per square meter for the production of tea and 600 - 700 grams per square meter for the production of coffee, espresso or the like.
  • the filter element or the fleece preferably has a thickness of between 0.8 and 3.3 millimeters, more preferably between 1.1 and 3.0 millimeters and most preferably 1.2-1.4 millimeters for the production of tea and 2 , 6 - 3.0 millimeters for the production of coffee.
  • the side wall and the bottom are an injection molded part.
  • the side wall and the bottom are integrally provided.
  • an energy generator is provided at the bottom of the portion capsule.
  • This energy generator can be annular, rectangular, qudratisch, oval or have any other closed shape.
  • the energy generator can be provided continuously or intermittently.
  • the energy generator is provided integrally with the bottom and is produced together with the same during injection molding.
  • the cross section of the energy generator is triangular, rectangular, square, circular or oval. The cross section may also have any other shape, as long as the energy generator protrudes from the surface.
  • the energy generator is preferably provided on the surface of the floor which faces the space in which the beverage substrate to be extracted and / or dissolved is located.
  • FIG. 1 shows the portion capsule 1 according to the invention, which is designed in the present case substantially frusto-conical.
  • the portion capsule 1 has a circumferential side wall 1.2 and a bottom portion 1.1.
  • the side wall 1.2 and the bottom area 1.1 span a space 1.7 in which there is a filter element 2, which in the present case has a felt structure.
  • the filter element 2 is sealed by means of the tool 3, which has at its lower end sealing surfaces 3.1, to the bottom 1.1 of the portion capsule 1 to form a sealed seam 7.
  • the portion capsule 1 is at least partially held in a counter holder 6.
  • the bottom 1.1 of the portion capsule has a circular planar portion, at the outer end of an annular bead surrounds 1.3, which simultaneously represents the transition region 5 between the bottom and the side wall.
  • a recess 1.6 here a circular recess, provided, which is preferably so large that when flowing out of the beverage produced from the portion capsule no appreciable pressure loss arises and / or that the beverage produced is not vortexed.
  • the weld is provided annularly and that the outer diameter of the sealed seam L2 75 - 85%, here 70.6%, of the diameter L3 of the filter element.
  • the seal seam is produced in the production of the beverage, especially in the production of coffee, no appreciable foam.
  • the inner diameter L1 of the sealing seam 67-77%, here 72.5%, of the diameter of the filter element.
  • the width of the sealed seam is 1.5 millimeters.
  • Transverse flows in the felt structure are preferably at least limited in the region of the weld seam.
  • the outer diameter of the filter element is, furthermore Favor t, provided greater than the outer diameter of the flat portion of the filter bottom.
  • the outer diameter L4 of the flat portion of the capsule bottom 84 - 94%, here 90%, of the diameter L3 of the filter element.
  • the filter element 2 consequently protrudes into the region of the bead without touching the bottom of the bead.
  • the outer diameter L3 of the filter element is smaller than the diameter of the portion capsule in the region of the bottom.
  • the sealing seam is provided concentrically to the recess 1.6 in the capsule bottom.
  • the bottom 1.1 and the side wall 1.2 are preferably made as an injection molded part, preferably made of plastic. Furthermore, the bottom has an energy tanner 8, which is provided in the present case as an annular elevation here with a triangular cross-section.
  • the energy generator can also have a different cross-section and also need not be provided continuously. With the energy generator, a linear sealing seam between the filter element and the bottom of the capsule succeeds.
  • the energy generator is provided on the space 1.7 facing the surface of the bottom 1.1. In the lower illustration, the side wall 1.2 has been omitted for the sake of clarity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Making Beverages (AREA)
  • Packages (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)
  • Non-Alcoholic Beverages (AREA)

Description

Die vorliegende Erfindung betrifft eine Portionskapsel für die Herstellung eines Getränks mit einer Seitenwand und einem Boden, die gemeinsam einen Raum definieren, wobei innerhalb des Raums ein Filterelement an den Boden gesiegelt ist.The present invention relates to a portion capsule for the manufacture of a drink having a side wall and a bottom, which together define a space, wherein a filter element is sealed to the bottom within the space.

Derartige Portionskapseln sind aus dem Stand der Technik bekannt und werden beispielsweise zur Herstellung von Kaffee oder Tee oder kaffeeartigen Getränken wie Espresso eingesetzt. Beispielsweise sind in den Druckschiften EP 1 792 850 B1 , EP 1 344 722 A1 , DE 8533170 U1 , US 2011/0097450 A1 , EP 1997748 A1 , US 3795182 , US 2011/0064852 A1 , US 2012/0070551 A1 and US 2003/0172813 A1 Portionskapseln zur Kaffee- und Espressozubereitung offenbart.Such portion capsules are known from the prior art and are used for example for the production of coffee or tea or coffee-like beverages such as espresso. For example, in the printing pens EP 1 792 850 B1 . EP 1 344 722 A1 . DE 8533170 U1 . US 2011/0097450 A1 . EP 1997748 A1 . US 3795182 . US 2011/0064852 A1 . US 2012/0070551 A1 and US 2003/0172813 A1 Portion capsules for coffee and espresso preparation revealed.

Die Portionskapseln sind bevorzugt kegelstumpfförmig oder zylindrisch geformt und werden beispielsweise aus einer tiefgezogenen Kunststofffolie oder im Kunststoffspritzverfahren hergestellt. Sie haben üblicherweise eine Seitenwand mit einem umlaufenden Flansch, eine offene Einfüllseite für ein zur Getränkeherstellung zu extrahierendes und/oder aufzulösendes Getränkesubstrat und einen Kapselboden, wobei zwischen dem Getränkesubstrat und dem Kapselboden ein sich gegen den Kapselboden abstützendes Filterelement angeordnet ist. Nach dem Einführen und Siegeln des Filterelementes an den Portionskapselboden und dem Einfüllen des Getränkesubstrates wird die Portionskapsel mit einer Deckelfolie verschlossen, die beispielsweise auf den Flansch aufgesiegelt oder aufgeklebt wird.The portion capsules are preferably frusto-conical or cylindrical in shape and are produced, for example, from a thermoformed plastic film or by plastic injection molding. They usually have a side wall with a peripheral flange, an open filling side for a beverage substrate to be extracted and / or dissolved beverage substrate and a capsule bottom, wherein between the beverage substrate and the capsule bottom is supported against the capsule bottom filter element. After insertion and sealing of the filter element to the portion capsule bottom and the filling of the beverage substrate, the portion capsule is closed with a lid film, which is sealed or glued, for example, on the flange.

Für die Zubereitung eines Kaffeegetränkes wird die Portionskapsel in eine Brühkammer eines Zubereitungsgerätes eingebracht. Vor, nach oder während des Einführens der Portionskapsel in die Brühkammer wird die Portionskapsel bevorzugt auf ihrer Bodenseite geöffnet und nach dem Abdichten der Brühkammer wird die mit einer Verschlussfolie verschlossene Einfüllseite der Portionskapsel mittels Einstechmitteln angestochen. Anschließend wird Zubereitungsflüssigkeit, vorzugsweise heißes Wasser, unter Druck in die Portionskapsel gefördert. Die Zubereitungsflüssigkeit durchströmt das Getränkesubstrat und extrahiert und/oder löst die für die Getränkeherstellung benötigten Stoffe aus dem Getränkesubstrat. Für die Zubereitung eines Espresso wirkt zum Extrahieren der ätherischen Öle beispielsweise ein Brühwasserdruck von bis zu 20 bar auf das Kaffepulver. Die Portionskapseln gemäß dem Stand der Technik haben jedoch den Nachteil, dass das hergestellte Getränk an seiner Oberfläche vergleichsweise viel Schaum aufweist.For the preparation of a coffee beverage, the portion capsule is introduced into a brewing chamber of a preparation device. Before, after or during the introduction of the portion capsule into the brewing chamber, the portion capsule is preferably opened on its bottom side, and after the brewing chamber has been sealed, the filling side of the portion capsule closed with a closing foil is pierced by piercing means. Subsequently, preparation liquid, preferably hot water, is conveyed under pressure into the portion capsule. The preparation liquid flows through the beverage substrate and extracts and / or dissolves the substances required for the beverage production from the beverage substrate. For the preparation of an espresso, for example, a brewing water pressure of up to 20 bar acts on the coffee powder to extract the essential oils. The portion capsules according to the prior art, however, have the disadvantage that the beverage produced has comparatively much foam on its surface.

Es war deshalb die Aufgabe der vorliegenden Erfindung, eine Portionskapsel zur Verfügung zu stellen, die die Nachteile des Standes der Technik nicht aufweist.It was therefore the object of the present invention to provide a portion capsule to provide that does not have the disadvantages of the prior art.

Gelöst wird die Aufgabe mit einer Portionskapsel für die Herstellung eines Getränks gemäß Anspruch 1.The object is achieved with a portion capsule for the preparation of a beverage according to claim 1.

Die zu diesem Gegenstand der vorliegenden Erfindung gemachten Ausführungen gelten für die anderen Gegenstände der vorliegenden Erfindung gleichermaßen und umgekehrt.The statements made on this subject of the present invention apply equally to the other objects of the present invention and vice versa.

Es wurde nun überraschenderweise gefunden, dass eine kreisförmige Siegelnaht, deren äußerer Durchmesser 75 - 85 % des Durchmessers des Filterelementes beträgt, zumindest zu einer sehr geringen Schaumbildung führt.It has now surprisingly been found that a circular sealing seam, whose outer diameter is 75-85% of the diameter of the filter element, leads to at least very little foaming.

Das Filterelement ist scheibenförmig vorgesehen und weist einen kreisförmigen Querschnitt auf. Die Siegelnaht, die das Filterelement mit dem Boden der Portionskapsel stoffschlüssig verbindet, wird vorzugsweise durch Ultraschallschweißen angebracht. Vorzugsweise ist das Filterelement nach dem Siegeln im Bereich der Siegelnaht flüssigkeitsundurchlässig.The filter element is disc-shaped and has a circular cross-section. The sealed seam, which connects the filter element to the bottom of the portion capsule in a material-tight manner, is preferably attached by ultrasonic welding. Preferably, the filter element is liquid impermeable after sealing in the region of the sealing seam.

Der innere Durchmesser der Siegelnaht beträgt 67 - 77 % des Durchmessers des Filterelementes.The inner diameter of the sealed seam is 67 - 77% of the diameter of the filter element.

In einer bevorzugten Ausführungsform beträgt die Breite der Siegelnaht 1 - 1,5 Millimeter. Vorzugsweise weist der Boden der Portionskapsel einen im Wesentlichen ebenen Abschnitt auf, der kreisförmig gestaltet ist und dessen äußerer Durchmesser 84 - 94 % des Durchmessers des Filterelementes beträgt. An den äußeren Umfang des ebenen Abschnitts schließt sich vorzugsweise eine Sicke an, durch die der ebene Abschnitt etwas beabstandet von einer möglichen Auslage angeordnet ist. Die Sicke bildet außerdem den Übergang zwischen dem ebenen Boden und der Seitenwand und verleiht der Portionskapsel Stabilität. Vorzugsweise erstreckt sich das Filterelement bis in den Bereich der Sicke und überdeckt diese zumindest teilweise, ohne sie zu berühren.In a preferred embodiment, the width of the sealed seam is 1 - 1.5 millimeters. Preferably, the bottom of the portion capsule has a substantially planar portion which is circular in shape and whose outer diameter is 84-94% of the diameter of the filter element. The outer circumference of the flat portion is preferably followed by a bead, through which the flat portion is arranged slightly spaced from a possible display. The bead also forms the transition between the flat bottom and the side wall and gives the portion capsule stability. Preferably, the filter element extends into the region of the bead and covers it at least partially without touching it.

Gemäß einer bevorzugten Ausführungsform weist der Boden eine Ausnehmung auf, die so groß ist, dass beim Ausströmen/Durchströmen des Getränks durch diese Ausnehmung im Wesentlichen kein Druckverlust entsteht. Diese Ausnehmung ist vorzugsweise bereits in den Kapselboden eingearbeitet, bevor das Filterelement an den Kapselboden gesiegelt wird. Die Ausnehmung ist vor dem Zubereitungsvorgang vorzugsweise mit einer Folie oder dergleichen verschlossen, die abgezogen oder von einem Aufstechorgan durchstochen werden kann.According to a preferred embodiment, the bottom has a recess which is so large that substantially no pressure loss is produced by the outflow / throughflow of the beverage through this recess. This recess is preferably already in the Capsule bottom incorporated before the filter element is sealed to the capsule bottom. The recess is preferably closed before the preparation process with a film or the like, which can be removed or pierced by a piercing.

Vorzugsweise ist der Durchmesser des Filterelementes kleiner, insbesondere 1 - 5 % kleiner, als die Innenabmessung der Portionskapsel in Bodenhöhe.Preferably, the diameter of the filter element is smaller, in particular 1 - 5% smaller than the inner dimension of the portion capsule at ground level.

Vorzugsweise weist das Filterelement eine Filzstruktur auf. Insbesondere handelt es sich dabei um eine Nadelfilzstruktur. Vorzugsweise besteht das Filterelement aus mindestens einer Filzstruktur und einer Trägerstruktur, insbesondere einer Gewebestruktur, wobei besonders bevorzugt die Filzstruktur zumindest einen Teilabschnitt des Volumens der Trägerstruktur ausmacht. Vorzugsweise erstreckt sich die Filzstruktur über den gesamten Querschnitt der Trägerstruktur, besonders bevorzugt aber nur über einen Teilbereich der Höhe. Vorzugsweise ist die Filzstruktur form-, kraft- und/oder stoffschlüssig mit der Trägerstruktur verbunden. Vorzugsweise weist das Filterelement zwei oder mehr Filzstrukturen auf, die durch die Trägerstruktur vorzugsweise voneinander getrennt sind. Die Dicke der beiden Filzstrukturen kann gleich oder unterschiedlich sein. Vorzugsweise ist eine dem Pulver oder Tee zugewandte Filzstruktur dünner als die dem Kapselboden zugewandte Filzstruktur oder umgekehrt. Vorzugsweise wird die Oberfläche der Filzstruktur behandelt, beispielsweise wärmebehandelt, um beispielsweise lose Fasern zu fixieren. Vorzugsweise wird das eine Filzstruktur aufweisende Filterelement lediglich in die Kapsel, insbesondere auf deren Boden, eingelegt. Das Filterelement kann aber auch mit der Kapsel, insbesondere deren Boden, insbesondere stoffschlüssig, verbunden werden. Beim Perforieren kann das Perforationsmittel in dieses Filterelement eindringen. Vorzugsweise werden mehrere Filterelemente, die eine oder mehrere Filzstrukturen und eine Trägerstruktur aufweisen, in der Kapsel übereinander angeordnet und ggf. miteinander verbunden.Preferably, the filter element has a felt structure. In particular, this is a needled felt structure. Preferably, the filter element consists of at least one felt structure and a support structure, in particular a fabric structure, wherein particularly preferably the felt structure makes up at least a portion of the volume of the support structure. Preferably, the felt structure extends over the entire cross section of the support structure, but more preferably over only a portion of the height. Preferably, the felt structure is positively, positively and / or materially connected to the support structure. Preferably, the filter element has two or more felt structures, which are preferably separated from each other by the support structure. The thickness of the two felt structures may be the same or different. Preferably, a felt structure facing the powder or tea is thinner than the felt structure facing the capsule bottom, or vice versa. Preferably, the surface of the felt structure is treated, for example, heat-treated, for example, to fix loose fibers. Preferably, the filter element having a felt structure is merely inserted into the capsule, in particular on its bottom. However, the filter element can also be connected to the capsule, in particular its bottom, in particular materially bonded. When perforating the perforating agent can penetrate into this filter element. Preferably, a plurality of filter elements, which have one or more felt structures and a carrier structure, are arranged one above the other in the capsule and possibly joined together.

Ein eine Trägerstruktur, insbesondere eine Gewebestruktur, und eine Filzstruktur aufweisendes Filterelement wird beispielsweise dadurch hergestellt, dass eine Gewebestruktur bestehend aus Längs- und Querfäden zur Verfügung gestellt wird. Für die Konstruktion eines Filzes, insbesondere eines Nadelfilzes, werden vorzugsweise Fasereinheiten ausgewählt von 0.8 - 7 dtex. Die Verbindung der Einzelfasern miteinander zu einem Filz und/oder dessen Verankerung in der Trägerstruktur findet vorzugsweise durch den Produktionsprozess des Vernadelns statt. Dabei werden Nadeln mit umgekehrten Widerhaken in das vorgelegte Faserpaket mit hoher Geschwindigkeit eingestochen und wieder herausgezogen. Durch die Widerhaken werden die Fasern über eine Vielzahl entstehender Schlaufen miteinander und/oder mit dem Trägergewebe verschlungen.A filter element having a support structure, in particular a fabric structure, and a felt structure is produced, for example, by providing a fabric structure consisting of longitudinal and transverse threads. For the construction of a felt, in particular a needle felt, fiber units are preferably selected from 0.8 to 7 dtex. The connection of the individual fibers together to form a felt and / or its anchoring in the support structure preferably takes place through the production process of needling. In this case, needles are inserted with reverse barbs in the submitted fiber package at high speed and pulled out again. The barbs cause the fibers to overflow a variety of resulting loops entwined with each other and / or with the carrier fabric.

Das Trägerelement aufweisend eine oder mehrere Filzstrukturen umfasst bevorzugt eine Massenbelegung (auch als Grammatur oder Flächengewicht bezeichnet) zwischen 100 und 800 Gramm pro Quadratmeter, besonders bevorzugt zwischen 200 und 650 Gramm pro Quadratmeter und ganz besonders bevorzugt von im Wesentlichen 150 - 250 Gramm pro Quadratmeter für die Herstellung von Tee und 600 - 700 Gramm pro Quadratmeter für die Herstellung von Kaffee, Espresso oder dergleichen. Das Filterelement bzw. das Vlies weist bevorzugt eine Dicke zwischen 0,8 und 3,3 Millimetern, besonders bevorzugt zwischen 1,1 und 3,0 Millimetern und ganz besonders bevorzugt 1,2 - 1,4 Millimetern für die Herstellung von Tee und 2,6 - 3,0 Millimetern für die Herstellung von Kaffee auf.The support element comprising one or more felt structures preferably comprises a mass occupancy (also referred to as grammage or basis weight) between 100 and 800 grams per square meter, more preferably between 200 and 650 grams per square meter, and most preferably substantially 150-250 grams per square meter for the production of tea and 600 - 700 grams per square meter for the production of coffee, espresso or the like. The filter element or the fleece preferably has a thickness of between 0.8 and 3.3 millimeters, more preferably between 1.1 and 3.0 millimeters and most preferably 1.2-1.4 millimeters for the production of tea and 2 , 6 - 3.0 millimeters for the production of coffee.

Gemäß einem weiteren erfindungsgemäßen oder bevorzugten Gegenstand der vorliegenden Erfindung sind die Seitenwand und der Boden ein Spritzgussteil.According to a further inventive or preferred subject matter of the present invention, the side wall and the bottom are an injection molded part.

Die zu diesem Gegenstand der vorliegenden Erfindung gemachte Offenbarung gilt für die anderen Gegenstände gleichermaßen und umgekehrt.The disclosure made on this subject of the present invention applies equally to the other objects and vice versa.

Vorzugsweise sind die Seitenwand und der Boden einstückig vorgesehen.Preferably, the side wall and the bottom are integrally provided.

Vorzugsweise ist am Boden der Portionskapsel ein Energiegeber vorgesehen. Dieser Energiegeber kann kreisringförmig, rechteckig, qudratisch, oval sein oder eine sonstige geschlossene Form aufweisen. Der Energiegeber kann kontinuierlich oder mit Unterbrechungen versehen sein, Vorzugsweise ist der Energiegeber einstückig mit dem Boden vorgesehen und wird beim Spritzgießen gemeinsam mit diesem hergestellt. Vorzugsweise ist der Querschnitt des Energiegebers dreieckig, rechteckig, quadratisch, kreisringförmig oder oval. Der Querschnitt kann aber auch eine beliebige andere Form aufweisen, so lang der Energiegeber aus der Oberfläche heraussteht. Der Energiegeber ist vorzugsweise auf der Oberfläche des Bodens vorgesehen, der dem Raum, in dem sich das zu extrahierende und/oder aufzulösende Getränkesubstrat befindet, zugewandt ist.Preferably, an energy generator is provided at the bottom of the portion capsule. This energy generator can be annular, rectangular, qudratisch, oval or have any other closed shape. The energy generator can be provided continuously or intermittently. Preferably, the energy generator is provided integrally with the bottom and is produced together with the same during injection molding. Preferably, the cross section of the energy generator is triangular, rectangular, square, circular or oval. The cross section may also have any other shape, as long as the energy generator protrudes from the surface. The energy generator is preferably provided on the surface of the floor which faces the space in which the beverage substrate to be extracted and / or dissolved is located.

Im Folgenden wird die Erfindung anhand der Figuren 1 und 2 erläutert. Dieser Erläuterungen sind lediglich beispielhaft und schränken den allgemeinen Erfindungsgedanken nicht ein. Die Erläuterungen gelten für alle Gegenstände der vorliegenden Erfindung gleichermaßen.

Figur 1
zeigt eine erste Ausführungsform der erfindungsgemäßen Portionskapsel.
Figur 2
zeigt eine weitere Ausführungsform der erfindungsgemäßen Portionskapsel.
In the following, the invention is based on the FIGS. 1 and 2 explained. These explanations are merely exemplary and do not limit the general inventive concept. The explanations apply equally to all articles of the present invention.
FIG. 1
shows a first embodiment of the invention Portion capsule.
FIG. 2
shows a further embodiment of the portion capsule according to the invention.

Figur 1 zeigt die erfindungsgemäße Portionskapsel 1, die in dem vorliegenden Fall im Wesentlichen kegelstumpfförmig ausgeführt ist. Die Portionskapsel 1 weist eine umlaufende Seitenwand 1.2 und einen Bodenbereich 1.1 auf. Die Seitenwand 1.2 und der Bodenbereich 1.1 spannen einen Raum 1.7 auf, in dem sich ein Filterelement 2 befindet, das in dem vorliegenden Fall eine Filzstruktur aufweist. Das Filterelement 2 wird mittels des Werkzeugs 3, das an seinem unteren Ende Siegelflächen 3.1 aufweist, an den Boden 1.1 der Portionskapsel 1 unter Ausbildung einer Siegelnaht 7 gesiegelt. Dabei wird die Portionskapsel 1 zumindest teilweise in einem Gegenhalter 6 gehalten. Der Boden 1.1 der Portionskapsel weist einen kreisförmigen ebenen Abschnitt auf, an dessen äußerem Ende sich eine kreisringförmige Sicke 1.3 anschließt, die gleichzeitig den Übergangsbereich 5 zwischen dem Boden und der Seitenwand darstellt. Durch die Sicke 1.3 ist der ebene Abschnitt des Bodens von einer möglichen Auflage, auf der die Sicke aufsteht, beabstandet. In dem ebenen Abschnitt ist eine Ausnehmung 1.6, hier eine kreisförmige Ausnehmung, vorgesehen, die vorzugsweise so groß ist, dass beim Ausströmen des hergestellten Getränkes aus der Portionskapsel kein nennenswerter Druckverlust entsteht und/oder dass das hergestellte Getränk nicht verwirbelt wird. Sobald das Filterelement 2 an den Boden der Portionskapsel gesiegelt ist, insbesondere durch Ultraschall gesiegelt ist, und das Werkzeug 3 aus der Portionskapsel entfernt worden ist, wird diese mit einem Getränkesubstrat, beispielsweise mit Kaffeemehl, befüllt und sodann vorzugsweise mit einer Folie verschlossen, die an den Flansch 1.4, der sich an die Seitenwand kreisringförmig anschließt, gesiegelt oder geklebt wird. Dafür weist der Flansch vorzugsweise eine Ausbuchtung 1.5 auf, die als definierte Siegelfläche dient. FIG. 1 shows the portion capsule 1 according to the invention, which is designed in the present case substantially frusto-conical. The portion capsule 1 has a circumferential side wall 1.2 and a bottom portion 1.1. The side wall 1.2 and the bottom area 1.1 span a space 1.7 in which there is a filter element 2, which in the present case has a felt structure. The filter element 2 is sealed by means of the tool 3, which has at its lower end sealing surfaces 3.1, to the bottom 1.1 of the portion capsule 1 to form a sealed seam 7. The portion capsule 1 is at least partially held in a counter holder 6. The bottom 1.1 of the portion capsule has a circular planar portion, at the outer end of an annular bead surrounds 1.3, which simultaneously represents the transition region 5 between the bottom and the side wall. By the bead 1.3, the flat portion of the bottom of a possible support on which the bead rests, spaced. In the planar section, a recess 1.6, here a circular recess, provided, which is preferably so large that when flowing out of the beverage produced from the portion capsule no appreciable pressure loss arises and / or that the beverage produced is not vortexed. Once the filter element 2 is sealed to the bottom of the portion capsule, in particular sealed by ultrasound, and the tool 3 has been removed from the portion capsule, this is filled with a beverage substrate, for example with ground coffee, and then preferably closed with a film, the the flange 1.4, which adjoins the side wall in an annular shape, sealed or glued. For this, the flange preferably has a bulge 1.5, which serves as a defined sealing surface.

Erfindungsgemäß ist nun vorgesehen, dass die Schweißnaht kreisringförmig vorgesehen ist und dass der äußere Durchmesser der Siegelnaht L2 75 - 85 %, hier 70,6 %, des Durchmessers L3 des Filterelementes beträgt. Durch diese Anordnung der Siegelnaht wird bei der Erzeugung des Getränkes, insbesondere bei der Herstellung von Kaffee, kein nennenswerter Schaum erzeugt. Erfindungsgemäß beträgt der innere Durchmesser L1 der Siegelnaht 67 - 77 %, hier 72,5 %, des Durchmessers des Filterelementes. Vorzugsweise beträgt die Breite der Siegelnaht 1,5 Millimeter. Beim Schweißen wird zum einen das Filterelement 2 mit dem Kapselboden 1.1 verbunden. Gleichzeitig wird aber auch die Filzstruktur zumindest teilweise zusammengedrückt und vorzugsweise zusammengedrückt fixiert. Querströmungen in der Filzstruktur sind im Bereich der Schweißnaht vorzugsweise zumindest eingeschränkt. Der äußere Durchmesser des Filterelements ist, weiterhin bevorzug,t größer vorgesehen als der äußere Durchmesser des ebenen Abschnitts des Filterbodens. Vorzugsweise beträgt der äußere Durchmesser L4 des ebenen Abschnitts des Kapselbodens 84 - 94 %, hier 90 %, des Durchmessers L3 des Filterelementes. Das Filterelement 2 ragt folglich in den Bereich der Sicke hinein, ohne den Grund der Sicke zu berühren. Weiterhin bevorzugt ist der äußere Durchmesser L3 des Filterelementes kleiner als der Durchmesser der Portionskapsel im Bereich des Bodens. Vorzugsweise wird die Siegelnaht konzentrisch zu der Ausnehmung 1.6 im Kapselboden vorgesehen.According to the invention it is now provided that the weld is provided annularly and that the outer diameter of the sealed seam L2 75 - 85%, here 70.6%, of the diameter L3 of the filter element. By this arrangement, the seal seam is produced in the production of the beverage, especially in the production of coffee, no appreciable foam. According to the invention, the inner diameter L1 of the sealing seam 67-77%, here 72.5%, of the diameter of the filter element. Preferably, the width of the sealed seam is 1.5 millimeters. During welding, on the one hand, the filter element 2 is connected to the capsule bottom 1.1. At the same time, however, the Felt structure at least partially compressed and preferably fixed compressed. Transverse flows in the felt structure are preferably at least limited in the region of the weld seam. The outer diameter of the filter element is, furthermore Favor t, provided greater than the outer diameter of the flat portion of the filter bottom. Preferably, the outer diameter L4 of the flat portion of the capsule bottom 84 - 94%, here 90%, of the diameter L3 of the filter element. The filter element 2 consequently protrudes into the region of the bead without touching the bottom of the bead. Further preferably, the outer diameter L3 of the filter element is smaller than the diameter of the portion capsule in the region of the bottom. Preferably, the sealing seam is provided concentrically to the recess 1.6 in the capsule bottom.

Bei der Ausführungsform gemäß Figur 2 sind der Boden 1.1 und die Seitenwand 1.2 vorzugsweise als ein Spritzgussteil, vorzugsweise aus Kunststoff gefertigt. Ferner weist der Boden einen Energiegerber 8 auf, der in dem vorliegenden Fall als kreisringförmige Erhebung hier mit einem dreieckigen Querschnitt vorgesehen ist. Der Fachmann versteht, dass der Energiegeber auch einen anderen Querschnitt aufweisen kann und auch nicht kontinuierlich vorgesehen sein muss. Mit dem Energiegeber gelingt eine linienförmige Siegelnaht zwischen dem Filterelement und dem Boden der Kapsel. Der Energiegeber ist auf der dem Raum 1.7 zugewandten Oberfläche des Bodens 1.1 vorgesehen. In der unteren Darstellung wurde die Seitenwand 1.2 der Übersichtlichkeit halber weggelassen.In the embodiment according to FIG. 2 the bottom 1.1 and the side wall 1.2 are preferably made as an injection molded part, preferably made of plastic. Furthermore, the bottom has an energy tanner 8, which is provided in the present case as an annular elevation here with a triangular cross-section. The skilled person understands that the energy generator can also have a different cross-section and also need not be provided continuously. With the energy generator, a linear sealing seam between the filter element and the bottom of the capsule succeeds. The energy generator is provided on the space 1.7 facing the surface of the bottom 1.1. In the lower illustration, the side wall 1.2 has been omitted for the sake of clarity.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Portionskapselportion capsule
1.11.1
Bodenbereichfloor area
1.21.2
SeitenwandSide wall
1.31.3
Übergang Bodenbereich/Seitenwand, SickeTransition floor area / side wall, surround
1.41.4
Flanschflange
1.51.5
Ausbuchtung im Flansch, SiegelflächeBulge in the flange, sealing surface
1.61.6
Ausnehmungrecess
1.71.7
Raumroom
22
Filterelement, FilzFilter element, felt
33
Siegelwerkzeugsealing tool
3.13.1
Siegelflächesealing surface
44
--
55
Übergangsbereich zwischen dem Boden 1.1 und der Seitenwand 1.2Transition region between the bottom 1.1 and the side wall 1.2
66
Gegenhalterbackstop
77
Siegelnahtseal
88th
Energiegeberenergizer
L1L1
innerer Durchmesser der Siegelnaht, beispielsweise 22,5 mminner diameter of the sealed seam, for example 22.5 mm
L2L2
äußerer Durchmesser der Siegelnaht, beispielsweise 25, 0 mmouter diameter of the sealed seam, for example 25, 0 mm
L3L3
Durchmesser des Filterelementes, beispielsweise 31,0 mmDiameter of the filter element, for example 31.0 mm
L4L4
Durchmesser des ebenen Teils des Bodens, beispielsweise 28,0 mmDiameter of the flat part of the floor, for example 28.0 mm

Claims (10)

  1. Single serve capsule (1) for producing a beverage, having a side wall (1.2) and a base (1.1) which collectively define a space (1.7), wherein within the space (1.7) a filter element (2) is sealed to the base (1.1), wherein the sealing seam (7) is provided so as to be toroidal and the outer diameter (L1) of the sealing seam is 75 to 85% of the diameter (L3) of the filter element (2), characterized in that the inner diameter (L1) of the sealing seam is 67 to 77% of the diameter (L3) of the filter element (2).
  2. Single serve capsule (1) according to Claim 1, characterized in that the width of the sealing seam is 1 to 1.5 millimeters.
  3. Single serve capsule (1) according to one of the preceding claims, characterized in that the base includes a substantially planar portion, the outer diameter (L4) of which is 84 to 94% of the diameter (L3) of the filter element (2).
  4. Single serve capsule (1) according to one of the preceding claims, characterized in that the base includes a clearance which is so large that no substantial loss of pressure occurs when the beverage flows out through the clearance (1.6).
  5. Single serve capsule (1) according to one of the preceding claims, characterized in that the diameter (L3) of the filter element is 1 to 5% smaller than the inner dimension of the single serve capsule in the region of the base.
  6. Single serve capsule (1) according to one of the preceding claims, characterized in that the filter element (2) at least in portions includes a felt structure.
  7. Single serve capsule (1) according to Claim 6, characterized in that the felt element is provided so as to be multi-layered.
  8. Single serve capsule (1) according to one of the preceding claims, characterized in that the side wall (1.2) and the base (1.1) are one injection-molded part.
  9. The single serve capsule as claimed in Claim 8, characterized in that an elevation (8) is provided on the base (1.1).
  10. The single serve capsule as claimed in Claim 9, characterized in that the elevation (8) is located on surface of the base which faces the interior.
EP13771121.4A 2012-09-27 2013-09-27 Single serve capsule comprising a filter element connected thereto by sealing Active EP2900572B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
RS20170082A RS55635B1 (en) 2012-09-27 2013-09-27 Single serve capsule comprising a filter element connected thereto by sealing
PL13771121T PL2900572T3 (en) 2012-09-27 2013-09-27 Single serve capsule comprising a filter element connected thereto by sealing
SI201330503A SI2900572T1 (en) 2012-09-27 2013-09-27 Single serve capsule comprising a filter element connected thereto by sealing
HRP20170156TT HRP20170156T1 (en) 2012-09-27 2017-01-31 Single serve capsule comprising a filter element connected thereto by sealing

Applications Claiming Priority (2)

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DE102012109186.2A DE102012109186A1 (en) 2012-09-27 2012-09-27 Portion capsule with a filter element connected by sealing
PCT/EP2013/070251 WO2014049143A1 (en) 2012-09-27 2013-09-27 Single serve capsule comprising a filter element connected thereto by sealing

Publications (2)

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EP2900572A1 EP2900572A1 (en) 2015-08-05
EP2900572B1 true EP2900572B1 (en) 2016-11-09

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EP (1) EP2900572B1 (en)
JP (2) JP2015534481A (en)
KR (1) KR101986488B1 (en)
CN (1) CN104640786B (en)
AU (1) AU2013322527B2 (en)
BR (1) BR112015006600A2 (en)
CA (1) CA2886299C (en)
DE (1) DE102012109186A1 (en)
DK (1) DK2900572T3 (en)
DO (1) DOP2015000075A (en)
ES (1) ES2612947T3 (en)
HK (1) HK1209398A1 (en)
HR (1) HRP20170156T1 (en)
HU (1) HUE030616T2 (en)
IL (1) IL237954B (en)
MX (1) MX352981B (en)
NZ (1) NZ706316A (en)
PH (1) PH12015500690B1 (en)
PL (1) PL2900572T3 (en)
PT (1) PT2900572T (en)
RS (1) RS55635B1 (en)
RU (1) RU2647445C2 (en)
SA (1) SA515360192B1 (en)
SG (1) SG11201502013VA (en)
SI (1) SI2900572T1 (en)
TN (1) TN2015000111A1 (en)
UA (1) UA113667C2 (en)
WO (1) WO2014049143A1 (en)
ZA (1) ZA201502277B (en)

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DE102012223291A1 (en) 2012-12-14 2014-06-18 K-Fee System Gmbh Portion capsule and method of making a beverage with a portion capsule
US9221204B2 (en) * 2013-03-14 2015-12-29 Kortec, Inc. Techniques to mold parts with injection-formed aperture in gate area
SG11201608479SA (en) * 2014-04-17 2016-11-29 K Fee System Gmbh Single-serve capsule and method for preparing a beverage using a single-serve capsule
PT3261957T (en) * 2015-02-27 2019-07-12 K Fee System Gmbh Capsule with a sealed filter element
US11084650B2 (en) 2015-06-10 2021-08-10 K-Fee System Gmbh Portion capsule with a three-ply nonwoven fabric
RU2018105139A (en) 2015-07-13 2019-08-13 К-Фее Зюстем Гмбх FILTER WITH CUT-OUT
CA2998669C (en) 2015-09-18 2020-01-07 K-Fee System Gmbh Adapter for a single serve capsule
GB201521882D0 (en) * 2015-12-11 2016-01-27 Mars Inc Beverage preperation system and capsules
AU2018268112A1 (en) 2017-05-19 2020-01-02 K-Fee System Gmbh Portion capsule for preparing a drink in a drinks production machine, and method for producing a portion capsule
EP3656700A1 (en) 2018-11-22 2020-05-27 K-fee System GmbH Portion capsule for preparing a beverage in a beverage preparation machine
US20220063899A1 (en) 2018-11-22 2022-03-03 Gcs German Capsule Solution Gmbh Seal For A Single Serve Capsule

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PH12015500690A1 (en) 2015-05-25
JP2015534481A (en) 2015-12-03
KR101986488B1 (en) 2019-06-10
ZA201502277B (en) 2016-11-30
AU2013322527B2 (en) 2017-02-02
RS55635B1 (en) 2017-06-30
PH12015500690B1 (en) 2015-05-25
RU2647445C2 (en) 2018-03-15
CN104640786A (en) 2015-05-20
JP6511498B2 (en) 2019-05-15
NZ706316A (en) 2017-06-30
US20150274411A1 (en) 2015-10-01
HK1209398A1 (en) 2016-04-01
CN104640786B (en) 2018-02-27
AU2013322527A1 (en) 2015-05-14
BR112015006600A2 (en) 2017-07-04
UA113667C2 (en) 2017-02-27
RU2015115577A (en) 2016-11-20
MX352981B (en) 2017-12-15
CA2886299A1 (en) 2014-04-03
HUE030616T2 (en) 2017-05-29
ES2612947T3 (en) 2017-05-19
CA2886299C (en) 2020-07-21
HRP20170156T1 (en) 2017-03-24
PT2900572T (en) 2017-02-14
MX2015003472A (en) 2015-06-10
TN2015000111A1 (en) 2016-06-29
DE102012109186A1 (en) 2014-03-27
WO2014049143A1 (en) 2014-04-03
SA515360192B1 (en) 2016-06-16
DK2900572T3 (en) 2017-02-06
US9969546B2 (en) 2018-05-15
DOP2015000075A (en) 2015-07-31
IL237954B (en) 2019-01-31
SI2900572T1 (en) 2017-04-26
JP2018023803A (en) 2018-02-15
SG11201502013VA (en) 2015-05-28
EP2900572A1 (en) 2015-08-05
PL2900572T3 (en) 2017-04-28
KR20150067223A (en) 2015-06-17

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