EP3348494A1 - Capsule de préparation d'une boisson - Google Patents

Capsule de préparation d'une boisson Download PDF

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Publication number
EP3348494A1
EP3348494A1 EP17151772.5A EP17151772A EP3348494A1 EP 3348494 A1 EP3348494 A1 EP 3348494A1 EP 17151772 A EP17151772 A EP 17151772A EP 3348494 A1 EP3348494 A1 EP 3348494A1
Authority
EP
European Patent Office
Prior art keywords
capsule
capsule body
barrier layer
beverage
predetermined breaking
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.)
Withdrawn
Application number
EP17151772.5A
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German (de)
English (en)
Inventor
Roland Affolter
Tim Thilla
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 EP17151772.5A priority Critical patent/EP3348494A1/fr
Publication of EP3348494A1 publication Critical patent/EP3348494A1/fr
Withdrawn legal-status Critical Current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 present invention relates to a capsule for the preparation of a beverage according to the preamble of claim 1.
  • capsules are often used for the production of different hot drinks, especially coffee or tea, in home use.
  • capsules which are designed as disposable products, comprise a capsule body for holding the beverage ingredients and a lid covering the capsule body.
  • the ingredients are mostly roasted and ground coffee beans, but sometimes also dried tea leaves.
  • soluble products in general or concentrates are also suitable.
  • pressurized water is passed through the capsule, resulting in extraction or dissolution of the material contained in the chamber.
  • the capsule comprises a lidded capsule body for forming a closed chamber containing a substance for making a beverage.
  • the capsule body has in the region of the bottom slots for the passage of a liquid through the capsule. These have the function of facilitating a penetration of the capsule base with a device provided for this purpose.
  • the capsule body is produced by means of a deep-drawing process.
  • the slots By attaching slots on the capsule bottom results in the disadvantage that the capsule body is not fluid-tight per se. To take this into account, it is proposed that the slots with a to close substantially air-impermeable layer. This may be, for example, a soluble and food-grade polymer or else an aluminum foil which is also penetrated. However, the attachment of such a layer in or on the capsule body is expensive and expensive.
  • the EP 2 957 524 A1 describes a capsule for the preparation of a beverage whose capsule body has a bottom with a weakening pattern with at least one predetermined breaking line.
  • the capsule body is designed such that it comes at a predetermined external pressure on the ground to a tearing of the capsule body along the predetermined breaking line. This makes it possible to open the capsule in a beverage preparation device intended for this purpose, without the need for penetrating agents.
  • the said capsule has the disadvantage that the capsule body in the region of the predetermined breaking line has only a very small wall thickness and is therefore not oxygen and / or aroma-tight. As a result, a starting substance contained in the capsule can not be stored therein for an extended period of time.
  • the capsule for the preparation of a beverage comprises a preferably rotationally symmetrical capsule body having a side wall and a bottom in particular integrally formed therewith. Furthermore, the capsule comprises a capsule body covering the lid to form a closed chamber. The chamber contains at least one starting substance for the preparation of the beverage.
  • the capsule body has at least one, in particular gap-shaped, opening or predetermined breaking line for passing a liquid through the capsule.
  • the capsule body is at least partially coated with a barrier layer covering the opening or the predetermined breaking line from a metal oxide.
  • metal oxide in the present context not only oxides of metals understood, but also oxides of the semi-metal silicon.
  • This embodiment of the capsule allows a particularly reliable closed recording of at least one starting substance for the preparation of a beverage, although the capsule body has at least one opening or predetermined breaking line for passing a liquid through the capsule. As part of a beverage production, the capsule can thus be easily opened.
  • the Capsule is inexpensive and can be produced in large quantities, since in particular an expensive attachment of an aluminum foil in the region of an opening or predetermined breaking line is eliminated.
  • the capsule body may be oxygen and / or aroma-tight.
  • an oxygen-tight embodiment penetration of oxygen into the capsule during storage of a starting substance contained therein can be substantially avoided. Accordingly, aging of the starting substance, for example coffee grounds, can be avoided by oxidation.
  • An oxygen-tight capsule is usually also aroma-tight. Accordingly, leakage of flavors contained in the starting substance during storage thereof within the capsule is substantially prevented.
  • Oxygen and / or aroma resistance is required to achieve a minimum shelf life of 12 months, preferably 18 months, especially for coffee.
  • an oxygen-tight and / or aroma-tight capsule is understood as meaning a capsule in which coffee powder can be stored at atmospheric temperature for at least 12 months, preferably at least 18 months, without the coffee powder changing which significantly compromises the quality of a coffee beverage produced therefrom.
  • the capsule body may have a surface-adjusted oxygen transmission rate (OTR) in the unit cm 3 per m 2 per day per 0.21 bar of less than 20, preferably less than 10, preferably less than 5.
  • OTR indicates the amount of oxygen diffused per unit area and time through the capsule body.
  • the capsule body can be made of a plastic material, in particular of polypropylene or of a biodegradable plastic material.
  • a capsule body of these materials is more environmentally friendly than, for example, one made of aluminum.
  • a capsule body made of a plastic material can be supplied for thermal recycling.
  • an actual recycling or possibly a biological degradation is possible.
  • a barrier layer of a metal oxide has the advantage that it can be made comparatively thin, as will be explained in more detail below.
  • This makes it possible to provide a capsule with a capsule body which is essentially made of a single plastic material (a so-called mono material).
  • This has the advantage over multilayer capsule bodies that a capsule according to the invention can be recycled more easily in a more environmentally friendly manner or, if appropriate, degraded.
  • Polypropylene has proven itself in beverage packages, especially for portion packaging of hot drinks. It can be perfectly processed by injection molding, coated with a metal oxide and sealed. In addition, it is easy to recycle.
  • the barrier layer may consist of a silicon oxide or of an aluminum oxide. These two materials show good barrier properties, especially with regard to the oxygen and / or aroma resistance. In addition, such barrier layers are largely insensitive to heat and moisture, which also sterilization and pasteurisationstaugliche capsules can be produced.
  • the barrier layer may have a thickness of 10 nm to 1 ⁇ m, preferably from 20 nm to 500 nm, preferably from 40 nm to 200 nm.
  • Such low layer thicknesses have the advantage that for coating the capsule body only a small Amount of metal oxide must be used. This results in the advantage already explained above that a capsule coated with such a thin barrier layer can possibly be regarded as consisting of a monomaterial.
  • such thin barrier layers are substantially transparent. This capsule body of any color can be coated without them being no longer visible. The production of transparent capsule body is possible.
  • the capsule body has a slit-shaped opening, this may have a width of less than 150 nm, preferably less than 100 nm, preferably less than 50 nm.
  • Such narrow gap-shaped openings can be covered particularly well with a barrier layer of a metal oxide.
  • Such openings can be attached to the capsule body with a laser cutting method.
  • the capsule body may be made by an injection molding or a deep drawing process.
  • an injection molding process has the advantage that capsule bodies of virtually any geometry can thus be produced inexpensively in large quantities.
  • injection-molded parts consist of a mono-material that can be easily and inexpensively recycled in an environmentally friendly way. Due to the barrier layer of a metal oxide, the capsule body consisting of a monomaterial nevertheless has a high oxygen and / or aroma resistance.
  • an injection molding method for the production of a capsule body with at least one predetermined breaking line, the use of an injection molding method is advantageous, since by means of injection molding particularly effective wall and / or floor areas can be produced with reduced thickness.
  • an opening in this context has proved to be favorable in that, in the production of capsule bodies with at least one predetermined breaking line, the two halves of the injection mold do not have to come into contact in order to produce an opening in the casting (capsule body). As a result, excessive wear of the injection mold can be avoided.
  • the barrier layer can be applied to the capsule body by a plasma coating process, preferably by a PEVCD process.
  • a plasma coating process preferably by a PEVCD process.
  • PEVCD Pulsma Enhanced Chemical Vapor Deposition
  • HMDSO hexamethyldisiloxane
  • TEOS tetraethoxysilane
  • Particularly preferred may be a plasma pretreatment with HMDSO and / or TEOS and oxygen (O 2 ).
  • capsule bodies can be coated with comparatively complex geometry.
  • this method can be applied to a very thin barrier layer described above.
  • the barrier layer may be attached to the inside, outside or both sides of the capsule body. This provides great flexibility in the design of the capsule body. In particular, when the barrier layer is attached to the inside of the capsule body, it is possible to prevent substances contained in the at least one starting substance for the preparation of a beverage from diffusing into the material of the capsule body.
  • the capsule body can additionally, on the inside, on the outside or on both sides, have an overcoat layer.
  • This overcoat layer may in particular have a thickness of 500 nm to 50 ⁇ m, preferably from 1 ⁇ m to 25 ⁇ m, preferably from 2 ⁇ m to 10 ⁇ m.
  • the said overcoat layer can make the optical appearance of the capsule more appealing. However, she can also serve to protect the barrier layer against abrasion and / or corrosion.
  • the gap-shaped opening or the predetermined breaking line can be formed after its rupture as a bottleneck for foaming a liquid derived from the capsule body. This is particularly advantageous in the production of cafe cream or espresso to achieve the characteristic crema, but also for the production of milk foam.
  • FIG. 1 shows a capsule body 2 of a first embodiment of a capsule according to the invention 1.
  • the capsule body 2 is rotationally symmetrical with respect to its longitudinal central axis L and comprises a side wall 3 and an integrally connected with this bottom 4.
  • the capsule body 2 predetermined breaking lines 5, 5 ' on.
  • the capsule body 2 is produced in one piece by an injection molding process and consists of a plastic suitable for injection molding, for example polypropylene or polyethylene.
  • the capsule body 2 is coated on the inside with a barrier layer 12 of silicon oxide, which is applied by a plasma coating process (see. Fig. 3 ).
  • the predetermined breaking lines 5, 5 'in the region of the bottom 4 are arranged in a cross-shaped pattern.
  • the bottom 4 also has the weakening lines 6, 7 and 8.
  • the capsule body 2 forms a chamber 9 for receiving at least one starting substance for the preparation of a beverage.
  • These may be, for example, roast and ground coffee beans, dried tea leaves, dried milk or chocolate powder.
  • other starting substances for the preparation of drinks would also be conceivable, for example concentrates for lemonades.
  • support elements 10 are arranged on the side wall 3 and in the transition region to the bottom. These each support a section of the base 4 located between two parallel predetermined breaking lines 5, 5 '. In the partial enlargement A according to FIG FIG. 3 the design of the predetermined breaking lines 5, 5 'can be seen better.
  • the barrier layer 12 is indicated on the inside of the capsule body by a thick black line. The thickness of the line does not reflect the thickness of the barrier layer 12 to scale. The barrier layer 12 ensures that the capsule body is also oxygen-tight and / or aroma-tight in areas with reduced wall thickness.
  • FIG. 4 the capsule 1 is shown after it has been opened by pressing the bottom 4. It can be seen that the regions of the bottom 4 lying between two predetermined breaking lines 5, 5 'were supported by the supporting elements 10, while the arched bottom 4 was pressed in.
  • FIGS. 5 to 7 show a capsule body 2 for an alternative embodiment of a capsule according to the invention 1.
  • the said capsule body 2 is made by a deep-drawing process and consists of a side wall 3 and an integrally formed with this bottom 4.
  • the capsule body 2 is on the inside with a barrier layer 12 of silicon oxide coated, which is applied by a plasma coating method. In the area of the bottom 4, the slots 11 are attached.
  • the thickness of the line does not reflect the thickness of the barrier layer 12 to scale. Also the width of the in FIG. 7 Slit shown is not true to scale.
  • the capsule body is so oxygen and / or aroma-tight, but can still easily in a designated beverage production device penetrate.
  • the barrier layer 12 Since the tightness of the capsule body 2 is achieved by the barrier layer 12, this can be made of a monomaterial by deep drawing. Since the thickness of the barrier layer 12 is comparatively small compared to the wall thickness of the capsule body, the capsule body can be easily recycled, in fact as a monomaterial.
  • a further embodiment of a capsule 1 comprises a capsule body 2 which is closed by a lid (not shown). On the opposite side of the lid of the capsule 1, a discharge nozzle 13 is arranged.
  • the capsule body 2 has a chamber 9, in which a starting substance for the preparation of a beverage can be stored. Between the chamber 9 and the outlet pipe 13, a filter element 14 is arranged, which prevents leakage of undissolved substance particles from the capsule 1. Subsequent to the filter element 14 is followed by a collecting space 15, which collects the prepared beverage in an area above the outlet 13.
  • a predetermined breaking line 5 is arranged on the inside of the capsule body 2.
  • a barrier layer 12 is applied, which covers the predetermined breaking line 5.
  • the thickness of the line does not reflect the thickness of the barrier layer 12 to scale.
  • the barrier layer 12 ensures that the capsule body is also oxygen-tight and / or aroma-tight in areas with reduced wall thickness.
  • the gap-shaped opening, which forms after tearing open the predetermined breaking line, is designed as a constriction for foaming a fluid derived from the capsule body.
  • the capsule shown can thus be used to make cafe Creme or Espresso with the characteristic crema.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Making Beverages (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Packages (AREA)
EP17151772.5A 2017-01-17 2017-01-17 Capsule de préparation d'une boisson Withdrawn EP3348494A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17151772.5A EP3348494A1 (fr) 2017-01-17 2017-01-17 Capsule de préparation d'une boisson

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17151772.5A EP3348494A1 (fr) 2017-01-17 2017-01-17 Capsule de préparation d'une boisson

Publications (1)

Publication Number Publication Date
EP3348494A1 true EP3348494A1 (fr) 2018-07-18

Family

ID=57850915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17151772.5A Withdrawn EP3348494A1 (fr) 2017-01-17 2017-01-17 Capsule de préparation d'une boisson

Country Status (1)

Country Link
EP (1) EP3348494A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018002102A1 (de) * 2018-03-15 2019-09-19 Georg Menshen Gmbh & Co. Kg Portionskapsel mit Schwachstellen und Dünnstellen im Kapselboden

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012080501A1 (fr) * 2010-12-17 2012-06-21 Delica Ag Capsule, système et procédé pour la préparation d'une boisson
EP2551216A1 (fr) * 2011-07-26 2013-01-30 Cavonic GmbH Récipient d'emballage, procédé de fabrication ainsi que le dispositif de fabrication
WO2013092910A1 (fr) 2011-12-21 2013-06-27 Delica Ag Capsule, système et procédé de préparation d'une boisson
WO2014067507A2 (fr) * 2012-10-29 2014-05-08 Cstec Gmbh Capsule destinée à la réception d'une matière à infuser telle que café, thé et analogue, et procédé pour fermer une capsule de ce type
EP2957524A1 (fr) 2014-06-17 2015-12-23 Delica AG Capsule pour preparation de boisson
DE102015214766A1 (de) * 2014-08-04 2016-02-04 Norbert Kuhl Lebensmittelbehälter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012080501A1 (fr) * 2010-12-17 2012-06-21 Delica Ag Capsule, système et procédé pour la préparation d'une boisson
EP2551216A1 (fr) * 2011-07-26 2013-01-30 Cavonic GmbH Récipient d'emballage, procédé de fabrication ainsi que le dispositif de fabrication
WO2013092910A1 (fr) 2011-12-21 2013-06-27 Delica Ag Capsule, système et procédé de préparation d'une boisson
WO2014067507A2 (fr) * 2012-10-29 2014-05-08 Cstec Gmbh Capsule destinée à la réception d'une matière à infuser telle que café, thé et analogue, et procédé pour fermer une capsule de ce type
EP2957524A1 (fr) 2014-06-17 2015-12-23 Delica AG Capsule pour preparation de boisson
DE102015214766A1 (de) * 2014-08-04 2016-02-04 Norbert Kuhl Lebensmittelbehälter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018002102A1 (de) * 2018-03-15 2019-09-19 Georg Menshen Gmbh & Co. Kg Portionskapsel mit Schwachstellen und Dünnstellen im Kapselboden
US11787623B2 (en) 2018-03-15 2023-10-17 Georg Menshen Gmbh & Co. Kg Single serve capsule having weak points and thinned points in the capsule base

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