EP3348495A1 - Corps de capsule d'une capsule - Google Patents

Corps de capsule d'une capsule Download PDF

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Publication number
EP3348495A1
EP3348495A1 EP17151773.3A EP17151773A EP3348495A1 EP 3348495 A1 EP3348495 A1 EP 3348495A1 EP 17151773 A EP17151773 A EP 17151773A EP 3348495 A1 EP3348495 A1 EP 3348495A1
Authority
EP
European Patent Office
Prior art keywords
capsule body
capsule
lid
barrier layer
beverage
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
EP17151773.3A
Other languages
German (de)
English (en)
Inventor
Roland Affolter
Tim Thilla
Fabian Zeller
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 EP17151773.3A priority Critical patent/EP3348495A1/fr
Publication of EP3348495A1 publication Critical patent/EP3348495A1/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 present invention relates to a capsule body for a capsule, a method for producing a capsule and a capsule according to the preambles of the independent claims.
  • 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.
  • capsules for making coffee drinks that are essentially made of aluminum have been available for some time now. Although good results can be achieved with these capsules, they are subject to increasing criticism due to the poor recyclability of aluminum. Accordingly, recent developments are increasingly targeting capsules made of plastic materials.
  • the technical approaches to capsule production are on the one hand the thermoforming process and on the other injection molding.
  • One of the major problems in making such a capsule from a plastic material is achieving a high barrier performance of the capsule body known from aluminum capsules.
  • capsule bodies produced by thermoforming in particular laminate structures are used as the starting material.
  • Such capsules have good oxygen and aroma resistance.
  • the capsule body can perform a thermal recycling.
  • such capsule bodies due to the variety of different polymers from which the laminate structure is formed, no actual recycling of the plastic material accessible.
  • the EP 2 518 102 A1 therefore proposes an apparatus and a method for the production of coated packaging moldings in which they are masked with a masking body before the actual coating. As a result, the coating of sealing areas of the packaging moldings can be prevented. However, the masking can not be reliably achieved, which may nevertheless result in at least partial coating of the sealing areas.
  • the capsule body should be easy to seal.
  • the surface is modified to increase its penetration barrier effect.
  • the energy directing device is designed such that it melts on attachment of the lid in such a way that the lid comes into contact with substantially unmodified thermoplastic material.
  • the present invention is based on the finding that the energy director in the production of such a capsule must be sufficiently large, so that the lid comes in contact with sufficient unmodified plastic material during ultrasonic sealing. As a result, good adhesion of the lid to the capsule body can be ensured.
  • a modification of the surface of the capsule body to increase its penetration barrier effect is understood to mean any superficial change in the chemical and / or physical material properties of the capsule body, in particular also a coating, which leads to an increase in its penetration barrier action.
  • the energy director may have a height of 0.2 mm to 1.2 mm, preferably 0.4 mm to 1.0 mm, preferably 0.6 mm to 0.8 mm and a width of 0.5 mm to 1.5 mm, preferably 0.8 mm to 1.4 mm, preferably 1.0 mm to 1.3 mm. This dimensioning of the energy directors has been proven in capsules for beverage preparation, especially of single or double portions of coffee drinks.
  • the capsule body can be coated to increase its penetration barrier effect with a barrier layer of a coating material.
  • the coating material may be a metal oxide.
  • the term metal oxide in the present context not only oxides of metals understood, but also oxides of the semi-metal silicon.
  • the coating material may be silicon oxide or an aluminum oxide. These two materials show good barrier properties, especially with regard to the oxygen and / or aroma resistance.
  • barrier layers are largely insensitive to heat and moisture, which also sterilization and pasteurisationstaugliche capsules can be produced.
  • 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
  • the capsule body can be pretreated with an oxygen plasma.
  • an oxygen plasma Particularly preferably, such a plasma pretreatment with HMDSO and / or TEOS and dioxygen (O 2 ) take place.
  • a pretreatment with oxygen plasma leads to a chemical modification of the polymer carriers in the region of the surface of the plastic material.
  • the barrier layer adheres to this much better. However, it is therefore less fluent and in particular less sealable.
  • a masking of the end face of the capsule body in the plasma pretreatment to avoid chemical modification in this area has not yet been achieved effectively. The present invention can circumvent this problem.
  • 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 only a small amount of metal oxide has to be used to coat the capsule body. 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 the color impression of the capsule body would be affected. The production of transparent capsule body is possible.
  • the capsule body may be formed 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 are 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 may consist of a thermoplastic material, in particular of polypropylene.
  • a capsule body of such material is more environmentally friendly than, for example, one of aluminum. So can a capsule body off be supplied to a plastic material for thermal recycling.
  • 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.
  • 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 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.
  • the energy directing device is designed such that it melts on attachment of the lid in such a way that the lid comes into contact with substantially unmodified thermoplastic material.
  • the present invention further relates to a capsule for the preparation of a beverage, which can be prepared by the method described above.
  • FIG. 1 shows an example of a capsule body 2 according to the invention for a capsule 1 for the preparation of a beverage.
  • the capsule body 2 is after filling the capsule 1 with a lid 4 (see FIG. 3 and 4 ) locked.
  • an outlet nozzle 7 is arranged on the opposite side of the lid of the capsule 1.
  • the capsule body 2 has a chamber 8 in which a starting substance for the preparation of a beverage can be stored. Between the chamber 8 and the outlet nozzle 7, a filter element 9 is arranged, which prevents leakage of undissolved substance particles from the capsule 1. Subsequent to the filter element 9 is followed by a collecting space 10, which collects the prepared beverage in an area above the outlet nozzle 7.
  • a barrier layer 3 On the surface of the capsule body 2 is a barrier layer 3 (see. Fig.
  • FIG. 2 give more details on the edge region of the capsule body, which is designed as a circumferential flange 5.
  • the flange has an energy director 6 having a height h and a width b.
  • FIGS. 3 and 4 the sealing of a lid 4 to the flange 5 is shown by ultrasonic sealing.
  • FIG. 3 the capsule body 2 and the lid 4 are shown before sealing.
  • FIG. 4 shows the corresponding part of Figure 9 portion of a capsule 1, which is closed with a cover It can be seen that the energy directing device 6 was melted by sealing the cover 4 with a sealing tool comprising a sonotrode 11 (symbolically indicated here) and its material was displaced on both sides. The energy director 6 has lost in height. Further, thermoplastic resin material which is free of coating material has been exposed. This ensures a reliable connection between the capsule body 2 and the lid 4.
EP17151773.3A 2017-01-17 2017-01-17 Corps de capsule d'une capsule Pending EP3348495A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17151773.3A EP3348495A1 (fr) 2017-01-17 2017-01-17 Corps de capsule d'une capsule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17151773.3A EP3348495A1 (fr) 2017-01-17 2017-01-17 Corps de capsule d'une capsule

Publications (1)

Publication Number Publication Date
EP3348495A1 true EP3348495A1 (fr) 2018-07-18

Family

ID=57860677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17151773.3A Pending EP3348495A1 (fr) 2017-01-17 2017-01-17 Corps de capsule d'une capsule

Country Status (1)

Country Link
EP (1) EP3348495A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019204916A1 (fr) * 2018-04-23 2019-10-31 2266170 Ontario Inc. Capsules et autres contenants présentant des attributs de recyclage optimisés et leurs procédés de fabrication

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007122206A1 (fr) * 2006-04-24 2007-11-01 Nestec S.A. Capsule de preparation d'une boisson avec organe d'etancheite attache sur la capsule et procede de fabrication de cette capsule
EP2518102A2 (fr) 2011-04-29 2012-10-31 Waldorf Technik GmbH & Co. KG Dispositif et procédé destinés à la fabrication de pièces moulées d'emballage revêtues
WO2014085934A1 (fr) * 2012-12-07 2014-06-12 2266170 Ontario Inc. Réceptacle à partie amovible
WO2015096989A1 (fr) * 2013-12-24 2015-07-02 Luna Technology Systems Lts Gmbh Capsule de portion pour préparer un produit d'infusion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007122206A1 (fr) * 2006-04-24 2007-11-01 Nestec S.A. Capsule de preparation d'une boisson avec organe d'etancheite attache sur la capsule et procede de fabrication de cette capsule
EP2518102A2 (fr) 2011-04-29 2012-10-31 Waldorf Technik GmbH & Co. KG Dispositif et procédé destinés à la fabrication de pièces moulées d'emballage revêtues
WO2014085934A1 (fr) * 2012-12-07 2014-06-12 2266170 Ontario Inc. Réceptacle à partie amovible
WO2015096989A1 (fr) * 2013-12-24 2015-07-02 Luna Technology Systems Lts Gmbh Capsule de portion pour préparer un produit d'infusion

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019204916A1 (fr) * 2018-04-23 2019-10-31 2266170 Ontario Inc. Capsules et autres contenants présentant des attributs de recyclage optimisés et leurs procédés de fabrication
US11039709B2 (en) 2018-04-23 2021-06-22 2266170 Ontario Inc. Capsules and other containers with optimized recycling attributes and methods for making same
US11040824B2 (en) 2018-04-23 2021-06-22 2266170 Ontario Inc. Capsules and other containers with optimized recycling attributes and methods for making same
US11172781B2 (en) 2018-04-23 2021-11-16 2266170 Ontario Inc. Capsules and other containers with optimized recycling attributes and methods for making same
US11432675B2 (en) 2018-04-23 2022-09-06 2266170 Ontario Inc. Capsules and other containers with optimized recycling attributes and methods for making same

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