EP0521510B1 - Stabile Kaffeekassette und Verfahren zu ihrer Herstellung - Google Patents

Stabile Kaffeekassette und Verfahren zu ihrer Herstellung Download PDF

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Publication number
EP0521510B1
EP0521510B1 EP92111252A EP92111252A EP0521510B1 EP 0521510 B1 EP0521510 B1 EP 0521510B1 EP 92111252 A EP92111252 A EP 92111252A EP 92111252 A EP92111252 A EP 92111252A EP 0521510 B1 EP0521510 B1 EP 0521510B1
Authority
EP
European Patent Office
Prior art keywords
cartridge
membrane
film
face
zones
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92111252A
Other languages
English (en)
French (fr)
Other versions
EP0521510A1 (de
Inventor
Olivier Fond
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.)
Societe des Produits Nestle SA
Nestle SA
Original Assignee
Societe des Produits Nestle SA
Nestle SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Societe des Produits Nestle SA, Nestle SA filed Critical Societe des Produits Nestle SA
Publication of EP0521510A1 publication Critical patent/EP0521510A1/de
Application granted granted Critical
Publication of EP0521510B1 publication Critical patent/EP0521510B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B29/00—Packaging of materials presenting special problems
    • B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
    • B65B29/022—Packaging of substances, e.g. tea, which are intended to be infused in the package packaging infusion material into capsules
    • 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
    • B65D85/8052—Details of the outlet
    • 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

Definitions

  • the invention relates to a packaging in the form of a closed rigid cartridge for making a drink suitable for pressurized fluid extraction machines.
  • cartridges for the preparation of a drink is motivated by several reasons: hygiene, optimal conservation of coffee, ease of use, better control of coffee quality obtained and good reproducibility of the extraction conditions.
  • closed cartridges which open under the effect of the water pressure injected, meet the requirements set out above.
  • These cartridges are distinguished by their opening system. Furthermore, they are substantially impermeable to moisture and preferably to oxygen.
  • Another cartridge is designed to be used according to a process in which, initially, mechanical zones of weakness are created in the lower membrane, then, in a second step, the capsule is opened under the action of water pressure injected by rupture of weakened areas.
  • this process can be sensitive to clogging because the successive deposits of organic matter in the multitude of small orifices can contribute to a progressive obstruction of these. Under these conditions, the quality and regularity of the extractions will be even more affected.
  • this process is used with a cartridge containing a powdery or liquid base substance.
  • a cartridge containing a powdery or liquid base substance In the case of coffee, it can only be a soluble coffee to be dissolved by water or a concentrated liquid coffee to be diluted by water. This process and this cartridge cannot be used in the case of freshly ground coffee.
  • Patent CH-A-458099 relates to an installation for the preparation of a drink in which a cartridge is extracted under pressure.
  • the cartridge which may contain ground coffee consists of two rigid sheets of plastic or aluminum perforated and welded together surrounding a porous envelope intended to contain the substance to be extracted, the underside of which is covered with a thin film of material. thermoplastic which melts in the presence of the hot extraction liquid.
  • Document US-A-2,936,695 on which the preamble of claim 1 is based relates to an infusion device comprising openings covered with a concentrated solution of glucose which dissolves during the passage of the extraction water.
  • the object of the present invention is to produce a closed cartridge, of frustoconical, frustoconical or hemispherical arrangement, opening under pressure to let the extract pass and which can be extracted in conventional espresso machines by means of a simple adaptation device .
  • the packaging according to the invention consists of a body and a membrane having a weakened zone, substantially impermeable to humidity and in particular to oxygen and in which the body is frustoconical, inverted frustoconical or hemispherical, of rounded section and provided with a rim and the membrane constitutes the seal of the cartridge fixed to the rim of said body. It is characterized in that the membrane or the flat face of the body itself comprises zones of reduced thickness intended to favor the opening of the cartridge for the passage of the extract under the effect of the fluid pressure and preferably tearing under the effect of the pressure of the fluid during the preparation of the beverage.
  • the cartridge can be wrapped as it is or possibly overwrapped in sachets which are themselves leaktight with oxygen and allowing a conservation of 6 to 12 months.
  • the cartridges can be grouped, for example in units of 2 to 10, because, being closed, they have by themselves a shelf life of a few days, for example from 2 to 15 days, once the open sachet.
  • the cartridge consists of two parts, a body and a membrane.
  • the body is frustoconical, inverted frustoconical or hemispherical.
  • the body section is rounded, that is, it can be circular, oval or polygonal with rounded edges.
  • Thinner areas can be in the membrane or in the flat face of the body.
  • the cartridge according to the invention can be extracted with the device comprising a grid which is the subject of European patent application No. 91107462.
  • the cartridge can also be extracted in a conventional espresso type coffee machine using a specific adapter as described in the European patent applications filed on the same day as the present application by the applicant under Nos 91111210, 91111211 and 91111212.
  • the extraction devices allow to extract in good conditions this simplified cartridge.
  • the cartridge opens automatically in the device and after use, can be removed easily and completely with a minimum of waste marc or packaging material.
  • the underside deforms, then tears at the location of the zones of reduced thickness in contact with the perforating tool, for example projecting elements, reaching its breaking tension under the effect of fluid pressure, for example air and water. Coffee extraction can then take place.
  • This lower face has undergone, during manufacture, a preliminary treatment resulting in zones of reduced thickness of the material capable of reaching the breaking tension, in the extraction device, without requiring too great an elongation, despite its plastic nature.
  • These thinner zones are preferably very numerous and distributed uniformly over the entire face.
  • They can form straight dotted lines made up of lines, for example from 2 to 10 mm in length and from a few ⁇ m to a few mm in width.
  • the extraction device intended for the use of these cartridges, may comprise protruding elements on the flow grid, the arrangement of which corresponds to that of these arcs.
  • the cartridge and the thinner areas are perfectly placed with respect to the projecting elements of the grid intended to promote their opening.
  • These thinner zones can be obtained by local absence of an upper layer or part of an upper layer of the material constituting the lower wall of the cartridge.
  • the extraction of the cartridge is carried out under pressure, which means that the maximum pressure of the extraction fluid is not reached when the cartridge is opened, but later during the extraction when the pressure drop across the coffee bed has reached its maximum.
  • the thinner areas in the lower face which are produced only during the manufacture of the cartridge, are not obtained by stamping the material but by separate, more reliable processes, that is to say freed tolerance issues.
  • the invention further relates to a method of manufacturing the cartridge, in which the body of the cartridge is thermoformed or stamped in a first film, the body thus formed is filled with a pulverulent composition for beverage under a stream of inert gas, then the membrane formed from a second film is sealed on the body of the cartridge.
  • the process is characterized by the fact that thinner areas in the first film or in the second film prior to filling the cartridge.
  • FIG. 3 relates to a variant of cartridge of inverted frustoconical shape.
  • the body is formed by thermoforming a polyester film, polyester / polyolefin complex or cardboard, the latter being for example of 200-300 g / m2 grammage and bonded to a polyester layer.
  • the body is formed from a thin barrier film, preferably from 5 to 30 ⁇ m thick, of polyvinylidene chloride or of copolymer. of ethylene and vinyl alcohol, sandwiched between two layers of polyolefin, for example a multi-layer film of polypropylene / copolymer of ethylene and vinyl alcohol / polypropylene, polyethylene / copolymer of ethylene and vinyl alcohol / polyethylene, for example from 100 to 500 ⁇ m thick.
  • the thin barrier film may alternatively be a thin layer of polyester, for example from 10 to 20 ⁇ m loaded with silica or metallized.
  • the body can also be made of cardboard, for example weighing 200-300 g / m2, linked to a complex of ethylene-vinyl alcohol copolymer with a polyolefin or a polyester.
  • the membrane consists of a complex film, for example of polyester loaded with a layer of silica or metallized, for example of 10-20 ⁇ m with a layer of polyolefin, optionally perforated or woven or nonwoven or of polyester, if necessary perforated or woven or nonwoven.
  • the membrane 4 is provided with thinner zones 3.
  • the thinner zones 3 can be created by any means of perforating or cutting the wall 8, for example using a tool provided with a multitude of small sharp blades, for example 2 to 10 mm in length, and thereby form slits throughout the thickness of the material.
  • This operation can take place prior to the forming of the capsule or the application of the membrane, but is preferably carried out after forming for the perforation of the bottom of the body.
  • a heated tool can be applied to the external surface of the perforated film so as to close over a small thickness 9, for example from 5 to 20 ⁇ m, the slots initially created as shown in FIG. 5.
  • the perforated cartridge can be a plastic film (10, fig.6) very thin for example from 5 to 20 microns in heat shrinkable thickness.
  • the material of the cartridge can be aluminum and the thin film 10 can be aluminized.
  • the body of the cartridge or the membrane is thermoformed in such a way that the lower wall of this cartridge has a ridged underside but still of a uniform thickness between a punch and a ridged matrix to create ribs, then the blank of the cartridge is placed in an identical matrix but with a heated punch also striated and whose ribs correspond to those of the matrix.
  • the pressure of the punch against the die causes a significant reduction in the thickness of the material such as 3 in the areas where the ribs of the tools correspond.
  • the wall retains its initial thickness such as 11.
  • the film multilayer comprises thick and resistant structure layers 12 which have been locally torn or cut or which are in the form of a fabric or a nonwoven structure of plastic material. These structural layers are linked to a thin layer 13 impermeable to oxygen.
  • the cartridge according to the invention can be of variable size according to the volume of drink that one wishes to prepare.
  • the dose of coffee contained can vary between 5 and 20 g
  • the diameter of the cartridge is between 2.5 and 7 cm
  • the thickness of the coffee bed between 10 and 25 mm.
  • the cartridge is filled with a pulverulent composition for the preparation of a drink.
  • This substance is preferably roasted and ground coffee, but can also be tea, soluble coffee, a mixture of ground coffee and soluble coffee or a chocolate product.
  • the cartridge is adapted to the extraction device having a tool for perforating the upper and lower faces of the cartridge during extraction.
  • the thinner areas are located on the underside (for example as shown in fig. 1 and 3), which facilitates perforation.
  • the extraction fluid will be directed in a vertical flow so as to pass through the entire bed of pulverulent composition without risking the creation of lateral flow flow.
  • a layer of filter paper or of woven or nonwoven plastic fibers can be interposed between the substance to be extracted and the lower internal wall of the cartridge (as shown in fig. 3, number 14).
  • This layer may or may not be bonded to said wall.

Claims (7)

  1. Verpackung in Form einer starren geschlossenen, eine Substanz zur Herstellung eines Getränks enthaltenden, im wesentlichen feuchtigkeits- und insbesondere sauerstoffundurchlässigen Kapsel, die an die Maschinen zur Extraktion durch Druckfluid angepaßt ist und aus einem Körper und einer Membran mit einem Schwächungsbereich besteht, wobei der Körper kegelstumpfförmig, umgekehrt kegelstumpfförmig oder halbkugelförmig ist, einen abgerundeten Querschnitt aufweist und mit einem abgewinkelten Rand versehen ist und die Membran den auf dem abgewinkelten Rand dieses Körpers befestigten Deckel der Kapsel bildet, dadurch gekennzeichnet, daß die Membran oder die ebene Seite des Körpers selbst Bereiche geringerer Dicke besitzt, die dazu bestimmt sind, die Öffnung der Kapsel für den Durchtritt des Extrakts unter der Wirkung des Fluiddrucks zu begünstigen, und unter der Einwirkung des Fluiddrucks bei der Herstellung des Getränks bevorzugt reißen.
  2. Verpackung nach Anspruch 1, dadurch gekennzeichnet, daß die Unterseite, das heißt die Membran, wenn der Körper kegelstumpfförmig oder halbkugelförmig ist, oder die ebene Seite des Körpers, wenn er umgekehrt kegelstumpfförmig ist, Bereiche geringerer Dicke besitzt, die entweder durch Ausschneiden von Schlitzen in dieser Seite und Schaffung einer dünnen Kunststoffolie außen an dieser Seite durch Wärmebehandlung oder, im Fall eines umgekehrt kegelstumpfförmigen Körpers, durch Verringerung der Dicke des Werkstoffs in manchen Bereichen der Seite durch Prägen geschaffen sind.
  3. Verpackung nach Anspruch 1, dadurch gekennzeichnet, daß der Körper und die Membran aus einer warmverformbaren und mit sich selbst durch Heißsiegeln verbindbaren Mehrschichtfolie bestehen, deren dicke Strukturschicht(en) örtlich durchgerissen oder durchgeschnitten wurden oder aus Gewebe aus Kunststoff oder nicht gewebten amalgamierten Kunststoffasern bestehen, und daß die Strukturschicht(en) mit einer dünnen sauerstoffundurchlässigen Kunststoffschicht verbunden ist/sind.
  4. Verpackung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß sie außerdem eine Zwischenschicht aus Filterpapier oder gewebten oder nicht gewebten Kunststoffasern zwischen der zu extrahierenden Substanz und der unteren Innenwand der Kapsel aufweist.
  5. Verfahren zur Herstellung einer Verpackung nach Anspruch 1, bei welchem man den Körper der Kapsel in einer ersten Folie warmverformt oder tiefzieht, den so geformten Körper unter einem Neutralgasstrom mit einer pulverförmigen Zusammensetzung für ein Getränk füllt und dann die aus einer zweiten Folie gebildete Membran auf dem Körper der Kapsel versiegelt, dadurch gekennzeichnet, daß man in der ersten Folie oder in der zweiten Folie vor dem Füllen der Kapsel Bereiche geringerer Dicke schafft.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß man die Bereiche geringerer Dicke im Fall eines umgekehrt kegelstumpfförmigen Körpers in einem den Boden der Kapsel bildenden Teil der ersten Folie vor ihrer Formung oder im Fall eines kegelstumpfförmigen oder halbkugelförmigen Körpers in einem Teil der die Membran bildenden zweiten Folie vor ihrem Aufbringen auf den Körper durch Reißen oder Bohren bildet, so daß Schlitze geschaffen werden, und dann die Außenseite des Bodens der Kapsel oder der Membran mit einer dünnen sauerstoffundurchlässigen Kunststoffolie bedeckt oder die Außenfläche dieser Seite so wärmebehandelt, daß die zuvor geschaffenen Schlitze auf einer geringen Dicke wieder geschlossen werden.
  7. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß man die Bereiche geringerer Dicke im Fall eines umgekehrt kegelstumpfförmigen Körpers in der Unterseite des Körpers bei dessen Formung durch Verringern der Dicke des Werkstoffs in manchen Bereichen der Seite durch Prägen schafft.
EP92111252A 1991-07-05 1992-07-02 Stabile Kaffeekassette und Verfahren zu ihrer Herstellung Expired - Lifetime EP0521510B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP91111213 1991-07-05
EP91111213 1991-07-05

Publications (2)

Publication Number Publication Date
EP0521510A1 EP0521510A1 (de) 1993-01-07
EP0521510B1 true EP0521510B1 (de) 1996-12-27

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EP92111252A Expired - Lifetime EP0521510B1 (de) 1991-07-05 1992-07-02 Stabile Kaffeekassette und Verfahren zu ihrer Herstellung

Country Status (7)

Country Link
US (1) US5656311A (de)
EP (1) EP0521510B1 (de)
JP (1) JP3150200B2 (de)
AT (1) ATE146749T1 (de)
DE (1) DE69216159T2 (de)
DK (1) DK0521510T3 (de)
ES (1) ES2096677T3 (de)

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US7806043B2 (en) 2004-10-01 2010-10-05 Hausbrandt Trieste 1892 Spa Apparatus and method for preparing and delivering a beverage with the use of a raw matter contained in a cartridge
CN101056802B (zh) * 2004-09-17 2011-02-09 图托埃布莱束股份公司 一次性使用的饮料盒及其开启方法
US8852659B2 (en) 2003-01-24 2014-10-07 Kraft Food R & D, Inc. Cartridge for the preparation of beverages
US8919242B2 (en) 2008-09-02 2014-12-30 Nestec S.A. Method for preparing a food liquid contained in a capsule by centrifugation and system adapted for such method
WO2015002561A1 (pt) 2013-07-05 2015-01-08 Novadelta - Comércio E Indústria De Cafés S.A. Embalagem de porção, sistema de preparação de bebidas utilizando as referidas cápsulas e processo utilizando o referido sistema
WO2015005814A1 (pt) 2013-07-09 2015-01-15 Novadelta - Comércio E Indústria De Cafés S.A. Embalagem de porção e sistema de preparação de bebidas compreendendo diferentes tipos da referida embalagem de porção
US9271598B2 (en) 2007-06-05 2016-03-01 Nestec S.A. Method for preparing a food liquid contained in a capsule by centrifugation and device adapted for such method
US9434532B2 (en) 2007-06-05 2016-09-06 Nestec S.A. Capsule for preparing a beverage or food liquid and system using brewing centrifugal force
US11945976B2 (en) 2014-05-27 2024-04-02 Amcor Flexibles Rorschach Ag Heat-sealable structure for aluminum disposable beverage-brewing containers

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US7964230B2 (en) 2006-08-04 2011-06-21 The Coca-Cola Company Method of sealing a pod for dispersible materials
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ATE474798T1 (de) * 2007-01-15 2010-08-15 Swiss Caffe Asia Ltd Kapsel, mittel zum penetrieren des bodens einer kapsel und vorrichtung für die zubereitung eines getränks
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US7987768B2 (en) 2008-03-27 2011-08-02 The Coca-Cola Company Brewing mechanism
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ATE146749T1 (de) 1997-01-15
JP3150200B2 (ja) 2001-03-26
US5656311A (en) 1997-08-12
DK0521510T3 (da) 1997-05-12
DE69216159T2 (de) 1997-04-10
JPH05199937A (ja) 1993-08-10
ES2096677T3 (es) 1997-03-16
EP0521510A1 (de) 1993-01-07

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