EP1369356A1 - Capsule contenant une substance et méthode pour la fabriquer - Google Patents

Capsule contenant une substance et méthode pour la fabriquer Download PDF

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Publication number
EP1369356A1
EP1369356A1 EP02011696A EP02011696A EP1369356A1 EP 1369356 A1 EP1369356 A1 EP 1369356A1 EP 02011696 A EP02011696 A EP 02011696A EP 02011696 A EP02011696 A EP 02011696A EP 1369356 A1 EP1369356 A1 EP 1369356A1
Authority
EP
European Patent Office
Prior art keywords
capsule
parts
creases
substance
sheet material
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Withdrawn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
EP02011696A
Other languages
German (de)
English (en)
Inventor
Alain Mariller
Martin Henck
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.)
Movenpick - Holding
Original Assignee
Movenpick - Holding
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 Movenpick - Holding filed Critical Movenpick - Holding
Priority to EP02011696A priority Critical patent/EP1369356A1/fr
Publication of EP1369356A1 publication Critical patent/EP1369356A1/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Withdrawn legal-status Critical Current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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/04—Articles or materials wholly enclosed in single sheets or wrapper blanks
    • B65D75/20—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks doubled around contents and having their opposed free margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • B65D75/22—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks doubled around contents and having their opposed free margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding the sheet or blank being recessed to accommodate contents
    • B65D75/225—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks doubled around contents and having their opposed free margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding the sheet or blank being recessed to accommodate contents the sheet or blank comprising more than one fold line
    • 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
    • B65D85/8046—Pods, i.e. closed containers made only of filter paper or similar material

Definitions

  • the invention relates to a capsule according to claim 1, to a method for its production according to claim 13 and a preferred use of the capsule according to claim 18.
  • Capsules containing a substance are known in different forms.
  • such capsules containing ground coffee are known that are made of deep drawn aluminum cups covered by a lid of sheet material. These capsules are water impermeable and are pierced in a coffee machine by piercing means for injecting water into the capsule and burst open when a certain pressure is reached.
  • Such capsules can keep the ground coffee fresh for a certain time without further package around the capsule, but are regarded as problematic for the environment by some consumers due to the use of aluminum which needs considerable amounts of energy for its production.
  • capsules are known that are made from two dish-like halves made of filter paper connected to a ring of cardboard, These capsules containing pressed ground coffee are water permeable and let the water run through the coffee rather freely, which is adverse to the perceived quality of the coffee extract. Further, an additional gas tight package is needed around this kind of capsules to keep the ground coffee fresh.
  • the halves of thin filter paper forming the capsule together with the cardboard ring show many accidentally arranged overlapping folds or creases, respectively where the tin, porous filter paper is randomly folded during adapting its flat circular form to the wanted, dish-shaped form. The folds occur since paper will tear if stretched, so that the amount of paper used has to be large enough to form the dish shape, which will result in having to much paper in the circumferential edge regions.
  • the invention aims at providing a capsule, in particular for ground coffee, which avoids the disadvantages of the known capsules.
  • the paper or paper containing sheet material is provided with thin layers of plastic material to make the capsule water and gas tight to a preferable extent.
  • Even a thin layer of aluminum may be preferable, giving very good gas tightness even if a very thin layer is used that needs only a small fraction of the aluminum needed for the capsules made of aluminum.
  • the folds or creases can be shaped in many ways and can be easily provided for by an embossing procedure with a shaped punch and a corresponding die, which forms the parts of the capsule with corresponding creases, which then can be bonded to form the capsule enclosing the substance.
  • the capsule is made essentially water tight as mentioned even if made of paper containing material and the capsule is provided thus for a coffee making process where the capsule has to be pierced to inject water and to extract liquid coffee therefrom.
  • a coffee extracting device and system that works accordingly is described in the European Patent Application No. 01 107 800.3 which is hereby included in its entirety into the present specification as regards the piercing of the capsule described herein.
  • Figures 1 to 3 show an example of a capsule 1 according to the invention.
  • the capsule is made of two parts 2, 3 which are identical. Both parts 2, 3 are dish-shaped hollow pieces which enclose between them a space that contains a substance.
  • a preferred embodiment is a capsule containing a dose of ground coffee, so that the capsule is intended to be used in a coffee machine to extract liquid coffee from this dose, as will be explained later.
  • each part has a center section 14, which may be essentially flat, as shown, a rounded outer section 15 and an edge section 16, so that each part is dish-shaped.
  • the edge section 16 is provided with creases or folds respectively.
  • the creases 10 to 13 and 17 to 19 are provided with reference numerals.
  • the creases are separated from each other by flat zones of which only zones 5 to 9 and 20 are provided with reference numerals. It is as well possible to omit the flat zones so that the creases are directly adjacent to each other.
  • each part 2, 3 has creases that are protruding in such a way that they extend outwardly i.e. creases 10, 12 and 18 of part 2 as seen in Figure 1 and creases that extend inwardly, i.e. creases 11, 13, 17 and 19 of part 2 as seen in Figure 1.
  • the creases are complementary, so that outwardly folded creases 10, 12, 18 of part 2 are met by inwardly extending complementary creases of part 3 and vice versa, which gives the shape of the shown capsule that has creases of alternating direction.
  • the edge section of the capsule is thus formed by the two shaped sheets abutting on each other and has the double thickness of the sheet material.
  • the creases of the shown example extend into the curved section 15, which can be seen by the zones 10', 11', 12' and 13' of the creases, which extend like valleys (creases 11' and 13') or like ridges (creases 10', 12') into the rounded section 15 of part 2 of the capsule 1.
  • the shown preferred embodiment is only to be understood as an example. It can as well be, that the creases on the one part are all folded in the same direction, on the other part in the other direction.
  • the flat zones between the creases can be less in number or can be omitted altogether.
  • the creases can be larger on one part and smaller on the other, so that an asymmetrical capsule will be formed, but of course the creases of unequal size must be formed such that they are partly complementary such that a closed capsule can be made at all.
  • Only one of the parts can be dish-shaped and the other can be an essentially flat lid, but having as well creases in the edge sections.
  • the parts 2, 3 abut preferably directly as shown, but it is as well possible to have a third part that forms a center part on which the two creased parts abut.
  • This center part needs to have a shape to interlock with the creases of the two other parts and would for the two parts 2, 3 shown in the drawings consist of a ring being on its one side shaped complementary to the creases of part 2 and on its other side complementary to the creases of part 3, which in this case need then not be complementary to each other, but can of course still be complementary to each other if such a ring is only inserted for some of the capsules to enlarge the volume of substance contained therein.
  • the shown, rather angularly formed creases or folds, respectively, have to be understood as a preferred embodiment only.
  • the creases may be provided as well in a more rounded shape, for example a wave-like shape.
  • the number of such waves around the capsule may be equal, less or higher, respectively, than the number of shown folds, and of course the number of these angularly shaped folds may as well be less or higher than in the drawing.
  • the different embodiments explained for these folds are as well applicable to folds of different shape, in particular to the wave-like shaped folds.
  • the creases or folds, respectively can be provided in a sheet material that can be stretched, for example aluminum or plastic, and accordingly can be deep drawn, but the folds are then rather beads formed into the sheet material. In this case they provide good stability of the capsule even if very thin sheet material is used.
  • the capsule from a sheet material that is not stretchable but will tear if a stretching force is applied, such as paper or paper containing material.
  • a stretching force such as paper or paper containing material.
  • the folds or creases, respectively, are true folds wherein the flat, non stretchable sheet material is formed to a part for the capsule.
  • the creasing of folding, or beading is done in a controlled way by a tool, so that each part has the same folds, which leads to the shown and described interlocking of the creased parts and their abutting.
  • a sheet material of paper or containing paper is preferred. It is preferred to provide rather thick paper, that can be regarded as water impermeable, at least if compared with filter paper. Of course, even comparably thick paper will let water soak through after a certain time, but this soaking through would not allow a useful extraction of a liquid from the substance in the capsule, for example liquid coffee extract from ground coffee enclosed in the capsule. In this sense, even a paper capsule can be described as water impermeable.
  • the paper of the capsule can be coated with layers of other materials.
  • a plastic layer can be provided, that makes the capsule water impermeable from the outside.
  • a thin layer of aluminum or other material may be present on the other side of the paper sheet material, the side that faces the substance when the capsule is formed.
  • This layer makes the capsule essentially gas tight, allowing longer storage of the substance. For example if this is ground coffee it remains fresh longer if no oxygen can enter the capsule.
  • An aluminum (or other material) layer or layers, respectively can be provided as well on the outside of the capsule or only on the outside. Further, the plastic layer or layers, respectively, may be provided at the inside too or only at the inside. Any combination of such layers is possible.
  • a heat bondable layer for example a thin hotmelt layer or meltable lacquer, that can be melted temporarily, when the capsule parts are put and pressed together, so that these parts will be fixed to each other when the layer has cooled down.
  • the method of making the preferred capsule as shown or other capsules as described includes the steps of shaping the parts. This can be done in a tool having a die with the form of the dish and the folds or creases, respectively.
  • a section of sheet material in the preferred embodiment a circular patch of sheet material is then placed on the die and pressed by another punch or die with a form complementing the first die. If the sheet material is stretchable it will stretch during the process and will be provided with the beaded shape. If - as preferred - the sheet material is not stretchable, the section or patch of sheet material is oversized, so that excess material is provided to follow the form of the dies, so that the material is not stretched.
  • the dies promote the folding or creasing, respectively, into the shape with the folds or creases.
  • Parts of the desired shape can be folded in this way. If the parts are identical in shape, as shown in the preferred example of Figures 1 to 3, the same dies can be used for both parts. Otherwise, different dies are used.
  • the dies are driven by suitable driving means to exert the folding force on the sheet material.
  • the substance to be encapsulated by the capsule is placed on one of the parts, or more exactly into the hollow space of the first part which is to this end preferably inserted into another die of the same shape as the folding die.
  • the substance can be placed into the part being already in a compacted shaped form or can be compacted on the part which is supported by the die.
  • Compacting of the substance can also be done by closing the capsule in the following step.
  • the second part is placed on the first part so that the creases abut on one another.
  • a second die in the corresponding shape can then be pressed onto the capsule parts and they can be heat bonded by heating the dies in the edge regions.
  • Another possibility is to apply a glue or adhesive to the edge sections of the parts before closing the capsule. If a liquid substance is to be filled into the capsule, an opening between the parts is left open, so that the otherwise closed capsule can be filled through the opening which is closed afterwards.
  • a liquid filling can also be provided by placing a liquid filled plastic bag between the parts.
  • the capsule will be inserted in an extraction chamber where the capsule is pierced upon closing of this chamber by water injection means on one side thereof and by extraction means on the other side thereof.
  • Blocking means may prevent flowing out of extracted coffee until a predetermined pressure has been reached in the capsule.
  • the capsule is pierced only by the water injecting means and bursts open under water pressure if deformed by water pressure such that piercing means are contacted by the capsule.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Making Beverages (AREA)
  • Packages (AREA)
EP02011696A 2002-06-04 2002-06-04 Capsule contenant une substance et méthode pour la fabriquer Withdrawn EP1369356A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02011696A EP1369356A1 (fr) 2002-06-04 2002-06-04 Capsule contenant une substance et méthode pour la fabriquer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02011696A EP1369356A1 (fr) 2002-06-04 2002-06-04 Capsule contenant une substance et méthode pour la fabriquer

Publications (1)

Publication Number Publication Date
EP1369356A1 true EP1369356A1 (fr) 2003-12-10

Family

ID=29433084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02011696A Withdrawn EP1369356A1 (fr) 2002-06-04 2002-06-04 Capsule contenant une substance et méthode pour la fabriquer

Country Status (1)

Country Link
EP (1) EP1369356A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9783361B2 (en) 2013-03-14 2017-10-10 Starbucks Corporation Stretchable beverage cartridges and methods
US9877495B2 (en) 2015-01-09 2018-01-30 Starbucks Corporation Method of making a sweetened soluble beverage product
BE1024724B1 (nl) * 2016-11-08 2018-06-14 Koffie F. Rombouts N.V. Hernieuwbare koffiefilter
US10442610B2 (en) 2014-03-11 2019-10-15 Starbucks Corporation Pod-based restrictors and methods

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0512468A1 (fr) * 1991-05-10 1992-11-11 Societe Des Produits Nestle S.A. Cartouche fermée pour la confection d'une boisson
US6025000A (en) * 1992-07-06 2000-02-15 Nestec S.A. Beverage preparation from a substance compacted into a cake

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0512468A1 (fr) * 1991-05-10 1992-11-11 Societe Des Produits Nestle S.A. Cartouche fermée pour la confection d'une boisson
US6025000A (en) * 1992-07-06 2000-02-15 Nestec S.A. Beverage preparation from a substance compacted into a cake

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9783361B2 (en) 2013-03-14 2017-10-10 Starbucks Corporation Stretchable beverage cartridges and methods
US10442610B2 (en) 2014-03-11 2019-10-15 Starbucks Corporation Pod-based restrictors and methods
US9877495B2 (en) 2015-01-09 2018-01-30 Starbucks Corporation Method of making a sweetened soluble beverage product
US10820607B2 (en) 2015-01-09 2020-11-03 Starbucks Corporation Soluble beverages with enhanced flavors and aromas
BE1024724B1 (nl) * 2016-11-08 2018-06-14 Koffie F. Rombouts N.V. Hernieuwbare koffiefilter

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