EP3686127A1 - Capsule destinée à la préparation d'une boisson - Google Patents

Capsule destinée à la préparation d'une boisson Download PDF

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Publication number
EP3686127A1
EP3686127A1 EP19153551.7A EP19153551A EP3686127A1 EP 3686127 A1 EP3686127 A1 EP 3686127A1 EP 19153551 A EP19153551 A EP 19153551A EP 3686127 A1 EP3686127 A1 EP 3686127A1
Authority
EP
European Patent Office
Prior art keywords
capsule
barrier membrane
side wall
chamber
capsule according
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.)
Pending
Application number
EP19153551.7A
Other languages
German (de)
English (en)
Inventor
Giovanni Erminnio Pietro Alberti
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.)
Delica AG
Original Assignee
Delica AG
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 Delica AG filed Critical Delica AG
Priority to EP19153551.7A priority Critical patent/EP3686127A1/fr
Publication of EP3686127A1 publication Critical patent/EP3686127A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • 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

Definitions

  • the invention relates to a capsule for the preparation of a beverage according to the preamble of claim 1.
  • Such portion packagings are used today in numerous variants in the commercial and private sectors in order to produce, for example, coffee, tea or other beverages in suitable machines.
  • capsules made of a plastic material have largely established themselves, with different manufacturing processes being used depending on the structure and functionality of the capsule.
  • a labyrinth capsule for powdered drinks has become known, the capsule base of which is formed by a labyrinth plate which has a labyrinth structure and spikes on its top.
  • a sealing film is placed on the labyrinth plate and directly or indirectly welded along its edge to the edge of the labyrinth plate.
  • the capsule is made up of two parts and consists of a cup-shaped capsule made of a thermoformed plastic laminate film without a capsule bottom and of the labyrinth plate which is separately produced by spraying and which is welded to the capsule wall.
  • This capsule already combines the advantages of two different manufacturing processes and thus the use of different materials.
  • the labyrinth plate produced by the injection molding process can be very complex, but does not have to have barrier properties, while the capsule side wall can be formed from a multilayer film with a barrier layer.
  • a disadvantage of this known capsule is that piercing pins are required to open the sealing film. These are immediately after removal from the injection mold not protected. Since the separate base parts are in bulk up to the connection with the side wall, there is a risk of damage, which impairs the piercing function.
  • Another disadvantage is that the relative position of the sealing film to the piercing mandrels cannot be determined exactly, depending on whether the sealing film is fixed between the labyrinth plate and the side wall or on the side wall. Penetrating the sealing film and thus controlling the flow is therefore difficult to control.
  • the capsule comprises a preferably rotationally symmetrical two-part capsule body with a side wall and with a bottom part connected to the side wall with an outlet opening.
  • the side wall in particular has no base part but is at most provided with a connection part in the base area (such as a flange) to which the base part can be attached.
  • the side wall has no structures for guiding liquid and no outlet geometry.
  • the capsule comprises a lid covering the capsule body and a barrier membrane arranged above or below the base part to form a substance-containing membrane Chamber, wherein the barrier membrane can be torn open under an internal pressure in the chamber.
  • the barrier membrane has at least one weakening line or weakening zone.
  • the base part can have a flat contact surface for the locking membrane without the risk that the locking membrane is weakened or overstretched even when the base part is connected to the side wall.
  • the chamber containing a substance can extend between the cover and the barrier membrane.
  • the chamber is subdivided further by further barrier membranes or filter elements and that the substance is, for example, only arranged in a partial area of the chamber.
  • the lid In the case of the capsule according to the invention, the lid generally forms an entry side for injecting a liquid into the chamber and the base part with the exit opening forms an exit side. In certain cases, however, it would also be conceivable to introduce a liquid into the chamber via the base part.
  • the substance can be an extractable substance such as e.g. Trade coffee or tea. Alternatively, the substance can also be a soluble substance such as e.g. Be milk powder.
  • the chamber could also contain a dilutable liquid, e.g. a fruit extract or the like.
  • the side wall preferably consists of a deep-drawn or thermoformed film.
  • the bottom part can be used as a plastic injection molded part be trained.
  • both the side wall and the base part could be made of plastic as an injection molded part.
  • a side wall made of aluminum foil and a base part made of plastic material would also be conceivable, for example. In certain cases it would also be conceivable not to produce the base part as an injection molded part, but rather by shaping it in an embossing process or the like.
  • the boundary walls of the chamber are particularly advantageously aroma-tight in relation to the outside atmosphere.
  • This is the barrier property against oxygen penetration which is customary for the person skilled in the packaging field.
  • Films of aluminum or of an aluminum laminate, for example, have such a barrier property.
  • the lid and the barrier membrane of the capsule are therefore preferably made of this material.
  • the bottom part is preferably welded or glued to the side wall or connected by means of a snap connection.
  • the connection should be liquid-tight and gas-tight and it must withstand the maximum possible internal pressure that can occur in the capsule.
  • connection between the side wall and the base part is particularly advantageous if the side wall has a circumferential, inwardly projecting connection edge and if the base part is connected to the connection edge on the outside or on the inside of the capsule.
  • the base part is advantageously configured in such a way that it can be connected indirectly or directly to the connecting edge either on the outside or on the inside. Such a configuration would also be advantageous regardless of whether the barrier membrane is provided with a line of weakness or a zone of weakness. Fixing the bottom part from the inside has the advantage that the bottom part is centered when it is inserted.
  • the side wall can have a circumferential, inwardly projecting shoulder, which is arranged on the side of the connecting edge facing the chamber.
  • the shoulder is preferably located directly in the area of the connecting edge, but could also be arranged further up towards the cover.
  • the arrangement of several shoulders would also be conceivable, so that the side wall has a step-like configuration in cross-section and the chamber tapers in steps from the cover towards the base part.
  • the shoulder narrows the diameter, so that the base part must have a slightly smaller outside diameter.
  • the shoulder also serves as a support either for the barrier membrane or for a filter layer or a filter plate.
  • a filter element in particular a filter fleece or a perforated film or a filter plate, can be arranged above and / or below the barrier membrane.
  • a filter element is particularly necessary if the substance in the chamber is an extractable substance.
  • the outlet opening is advantageously arranged on a longitudinal central axis of the capsule, the barrier membrane being able to have a plurality of weakening lines or weakening zones, which are arranged at a distance and preferably in the same angular division about the longitudinal central axis.
  • This arrangement causes a concentric flow against the center of the bottom part.
  • the weakening lines or weakening zones can have a different configuration. However, it is particularly preferred the weakened zone in the form of a straight line with a length of 5 to 10mm. The line preferably runs tangentially over an angle of less than 90 ° and preferably about 45 °. It has been shown that a particularly good crema can be achieved with such a configuration with a relatively short line of weakness.
  • This line of weakness is preferably arranged in the region of a labyrinth structure.
  • the outlet opening can be arranged on the side of the base part facing away from the chamber at the end of an outlet pipe.
  • the outlet pipe can be provided with an end wall on the chamber side and it can have a plurality of circumferential individual openings. As a result, the outflow of the liquid takes place on the inside of the capsule through the plurality of individual openings in the cross section of the outlet pipe.
  • a flow body can also be held centrally in the outlet pipe.
  • the bottom part particularly advantageously has a labyrinth structure on the side facing the chamber, which is arranged around the outlet opening.
  • This labyrinth structure is covered by the barrier membrane and thus creates a forced flow for better mixing of the extract, the solution or the mixture. This creates a crema over coffee.
  • the labyrinth structure can have a plurality of elevations spaced circumferentially from one another, which are arranged in a circular arc around the outlet opening. These elevations can be webs, ribs, blades or pins. The upper sides of the elevations facing the chamber are preferably all on a common plane. This ensures a clean support for the barrier membrane.
  • the elevations which are spaced apart from one another on the circumference, can be arranged on a plurality of concentric circles.
  • the elevations are preferably also radially offset from one another.
  • the bottom part without a labyrinth structure merges directly into the outlet opening in the manner of a funnel or that, for example, an outlet nozzle is only arranged in the center, which at the same time serves as a central support structure for the barrier membrane.
  • the barrier membrane can have at least one part-circular weakening line with the same center as the elevations, this weakening line being arranged in such a way that it runs in a freely stretched area of the barrier membrane between or outside the elevations below.
  • the tearing behavior of the predetermined tear line can be controlled much better with such an arrangement.
  • the entire opening cross-section is available for the passage of the liquid.
  • two diametrically opposed lines of weakness can be arranged, each extending over an angle of between 60 ° and 120 °, preferably between 80 ° and 100 ° in a circular arc around the longitudinal central axis of the capsule. Depending on how much flow cross-section is desired, this angle can be increased or decreased.
  • more than two curved weakening lines could also be arranged, although not all weakening lines necessarily have to extend over the same angle.
  • the barrier membrane preferably lies loosely on the labyrinth structure and is only connected to the base part or to the side wall on its outer circumference.
  • the barrier membrane acts like a rupture disc, which is only clamped on the outer circumference.
  • the barrier membrane could also be connected to the surface of the labyrinth structure and to the end of the outlet pipe in the center.
  • the barrier membrane has a preferably machine-readable marking, in particular an optical marking.
  • the weakening lines or the weakening zones can be precisely aligned relative to the base part.
  • the marking can be, for example, a black line or individual points or crosses.
  • a total capsule designated 1 essentially consists of a capsule body 2, which in turn is divided into a side wall 3 and a bottom part 4.
  • the capsule body is preferably rotationally symmetrical and approximately frustoconical.
  • the side wall 3 has at its upper end with the larger diameter a circumferential flange 13 on which a cover 6 can be fixed.
  • an inwardly projecting connecting edge 11 is arranged at the lower end of the side wall 3 with the smaller diameter.
  • an inwardly projecting connecting edge 11 is arranged at the lower end of the side wall 3 with the smaller diameter.
  • An inwardly projecting and circumferential shoulder 12 is arranged on the side of the connecting edge 12 facing the cover 6.
  • the base part 4 has a labyrinth structure 16 on the side facing the cover 6.
  • a central outlet opening 5 is provided on a longitudinal central axis 15 of the capsule.
  • the labyrinth structure 16 and thus also the outlet opening 5 are covered by a barrier membrane 7 and by a filter element 14.
  • a chamber 9 is formed in the capsule 1, which encloses a substance 8 gas-tight and liquid-tight with respect to the outside atmosphere and preferably also aroma-tight.
  • the arrangement and sequence of the barrier membrane 7 and filter element 14 are only shown symbolically here and can vary, as will also be described below.
  • Figure 3 shows the capsule body 2 again in perspective and with a view of the floor before the connection of the bottom part 4 with the side wall 3.
  • the side wall can be thermoformed from a multilayer plastic film with a barrier - Properties are made.
  • the side wall 3 can also have additional indentations, reinforcing ribs, shoulders or the like.
  • an outlet pipe 18 is arranged, which extends into the interior of the capsule.
  • this outlet tube is closed off by an end wall 19, a plurality of lateral individual openings 20 being provided.
  • Downtown A flow body 21 is held in the outlet pipe and thus in the outlet opening, which improves the flow behavior and thus prevents the jet from splitting up after leaving the outlet opening.
  • a labyrinth structure 16 which consists of a plurality of individual elevations 17a and 17b, is arranged around the outlet opening 5 or around the individual openings 20. These elevations are arranged on concentric circles and are spaced apart both radially and circumferentially. As shown, the elevations 17a are small curved blades which are arranged on the outermost circle. Three concentric circles of significantly smaller elevations 17b then follow towards the center. The free ends of the elevations are all on a common level, on which the barrier membrane lies directly or indirectly.
  • stiffening ribs 22 are arranged on the outside of the base part. These prevent the bottom part from bending under the influence of heat and pressure.
  • the outer edge 24 of the bottom part serves primarily to connect the bottom part to the connecting edge 11 of the side wall 3.
  • Figure 8 shows schematically a barrier membrane 7, which can be punched out of a film 26.
  • Two part-circular weakening lines 10 with the center of the later central longitudinal axis 15 of the capsule are arranged diametrically opposite one another.
  • the lines of weakness extend over an angle ⁇ of, for example, 90 °.
  • a circular marking line 23 enables an exact alignment relative to the base part when the barrier membrane is inserted.
  • the barrier membrane is punched out so that the marking line 23 just remains visible.
  • the dash-dotted circular line 25 indicates the connection area at which the barrier membrane 7 is firmly connected to the capsule body.
  • symbolic circular elevations 17a are shown, on which the barrier membrane 7 will later rest.
  • the two lines of weakness 10 lie in a freely stretched area between the elevations 17a and the outer circumference of the barrier membrane, on which the latter is clamped.
  • Figure 9 shows an exemplary embodiment of an inserted barrier membrane 7, the weakening line 10 of which extends in a freely stretched area between an elevation 17a and the outer circumference.
  • the marking line 23 was used for exact positioning.
  • the base part 4 is connected to the connecting edge 11 of the side wall 3 from the inside of the capsule.
  • the barrier membrane 7 can be an aluminum foil which is provided on one side with a plastic layer.
  • the line of weakness 10 is applied by means of a laser beam, which, however, only removes the plastic layer, but not the aluminum layer.
  • the weakening line or weakening zone could also be produced in another way, for example by scratching or embossing the aluminum foil.
  • FIG. 10 The embodiments according to Figures 10 to 13 show regardless of the overall configuration of the capsule and exemplarily different types of attachment of the bottom part and different variants of attachment of the barrier membrane and one at most required filter layer.
  • the bottom part 4 is fastened from the inside with the connecting edge 11, as already in Figure 9 shown.
  • the barrier membrane 7 is also identically attached directly to the surface of the bottom part 4.
  • a filter element 14 is still attached to the side wall 3 above the barrier membrane, specifically on the shoulder 12 projecting inwards.
  • the filter element 14 can be a filter fleece or a perforated membrane or a filter plate.
  • the bottom part 4 is connected from the outside to the connecting edge 11.
  • the blocking membrane 7 is in turn fastened directly on the surface of the bottom part 4.
  • the filter element 14 is fastened directly on the inside of the connecting edge 11 and it lies directly on the blocking membrane 7.
  • the bottom part 4 is also connected from the outside to the connecting edge 11.
  • the barrier membrane 7 is not connected directly to the bottom part 4, but to the inside of the connecting edge 11.
  • a filter element 14 is attached to the shoulder 12.
  • the bottom part 4 is in turn connected to the connecting edge 11 from the outside.
  • the barrier membrane not directly on the surface of the base part 4 is the barrier membrane, but a further filter element 14 '.
  • the overlying barrier membrane is connected on the inside to the connecting edge 11.
  • the filter element 14 ' can only be clamped between the blocking membrane 7 and the bottom part or it can be fastened on the bottom part 4.
  • Another filter element 14 is attached to the shoulder 12.
  • the connection between the base part 4 and the connecting edge 11 is made by ultrasonic welding.
  • a line of weakness 10 is provided in the form of a straight line with a length l of approximately 5 to 10 mm.
  • the line of weakness 10 is arranged tangentially (that is, the line is perpendicular to a radial ray R at its center). Accordingly, it extends over an angle ⁇ of less than approximately 45 °.
  • the straight line of weakness 10 is arranged in the area of the labyrinth structure 16.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Making Beverages (AREA)
EP19153551.7A 2019-01-24 2019-01-24 Capsule destinée à la préparation d'une boisson Pending EP3686127A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19153551.7A EP3686127A1 (fr) 2019-01-24 2019-01-24 Capsule destinée à la préparation d'une boisson

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19153551.7A EP3686127A1 (fr) 2019-01-24 2019-01-24 Capsule destinée à la préparation d'une boisson

Publications (1)

Publication Number Publication Date
EP3686127A1 true EP3686127A1 (fr) 2020-07-29

Family

ID=65234419

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19153551.7A Pending EP3686127A1 (fr) 2019-01-24 2019-01-24 Capsule destinée à la préparation d'une boisson

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EP (1) EP3686127A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5656311A (en) * 1991-07-05 1997-08-12 Nestec S.A. Cartridges having interiorly positioned zones of reduced thickness
WO2008087553A1 (fr) 2007-01-18 2008-07-24 Rewisa Ag Capsule à labyrinthe pour boisson en poudre
WO2011080022A1 (fr) * 2009-12-16 2011-07-07 Francesco Illy Capsule pour la préparation d'une boisson
WO2014090567A1 (fr) * 2012-12-14 2014-06-19 K-Fee System Gmbh Capsule-dosette et procédé de fabrication d'une boisson à l'aide d'une capsule-dosette
EP3251976A2 (fr) * 2016-06-03 2017-12-06 Delica AG Capsule de préparation d'une boisson

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5656311A (en) * 1991-07-05 1997-08-12 Nestec S.A. Cartridges having interiorly positioned zones of reduced thickness
WO2008087553A1 (fr) 2007-01-18 2008-07-24 Rewisa Ag Capsule à labyrinthe pour boisson en poudre
WO2011080022A1 (fr) * 2009-12-16 2011-07-07 Francesco Illy Capsule pour la préparation d'une boisson
WO2014090567A1 (fr) * 2012-12-14 2014-06-19 K-Fee System Gmbh Capsule-dosette et procédé de fabrication d'une boisson à l'aide d'une capsule-dosette
EP3251976A2 (fr) * 2016-06-03 2017-12-06 Delica AG Capsule de préparation d'une boisson

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