US20050266122A1 - Capsule to be used to prepare an infused beverage - Google Patents

Abstract

A capsule (1) used to prepare an infused beverage, especially cappuccino or macchiato coffee, comprises a first container (6) made of a substantially flexible material and containing a powdered infusion substance (MI), the coffee, and a second container (2), attached to the first container (6), made of a substantially rigid material and containing a powdered soluble substance (MS), the milk.

Description

TECHNICAL FIELD
• The present invention relates to a capsule that can be used to prepare an infused beverage.
• In particular, the present invention relates to a single-dose coffee capsule to be used in an espresso coffee machine in which a flow of hot or boiling water forced through the capsule positioned in a percolating chamber produces a hot milk or coffee beverage, such as, for example, macchiato espresso coffee or cappuccino, which the present specification expressly refers to but without restricting the scope of the invention.
BACKGROUND ART
• Nowadays, a very popular way of preparing espresso coffee, especially in the home, is to use single-dose “coffee pods”, which are extremely easy to use and readily available on the market. Typically, in this context, a pod is a single measure of coffee or other infusion product enclosed in a sealed filter paper container or bag of substantially cylindrical shape designed to be placed in a suitable holder forming part of the espresso coffee machine.
• European patent EP 776166 B1 describes the method for making a filter paper bag or pod where the infusion material, namely coffee, is compressed, mixed with soluble additive material, such as powdered milk or creamer or the like, and enclosed between two layers of filter paper. The pod thus obtained can be used in an espresso coffee machine to make a hot coffee and milk beverage, especially cappuccino.
• The use of a pod of the type made of filter paper, as described in the aforementioned patent, has considerable disadvantages.
• The hot water flowing through the filter paper pod dissolves all the soluble additive material, namely the powdered milk, present in the mixture, whilst the infusion material, namely the coffee, tends to remain compacted. As a result, the beverage made with pods of this kind often contains incorrect proportions of milk to coffee. In other terms, the beverage made using the pods described above, which are made entirely of filter paper, contains an excessively high concentration of milk, making it unpleasant to the taste.
• Another disadvantage of these pods made entirely of filter paper is that the part of the mixture constituted by the soluble additive material dissolves completely, thus partly emptying the pod, causing it to become soft and spongy, and difficult to remove from the holder of the coffee machine when an unused pod has to be placed in the machine to make another cup of coffee.
• The present invention has for an aim to provide a capsule used to prepare an infused coffee and milk beverage that overcomes the above mentioned disadvantages.
DISCLOSURE OF THE INVENTION
• The present invention accordingly provides a capsule that can be used to prepare an infused beverage and that is characterised in that it comprises a first container made of a substantially flexible material and containing a powdered infusion substance, and a second container made of a substantially rigid material and containing a powdered soluble substance.
BRIEF DESCRIPTION OF THE DRAWINGS
• The invention will now be described with reference to the accompanying drawings which illustrate a preferred, non-restricting embodiment of a capsule used to prepare an infused beverage, and in which:
• FIG. 1 is a front cross section of a preferred embodiment of the capsule according to the invention;
• FIG. 2 is a detail, shown in cross section, of the capsule ofFIG. 1;
• FIG. 3 is another front cross section of the capsule ofFIG. 1;
• FIG. 4 is a perspective view of the capsule according to the present invention;
• FIG. 5 is a front cross section of the capsule ofFIG. 4 during infusion; and
• FIG. 6 is a detail, shown in cross section, of the capsule ofFIG. 5.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION
• With reference to the accompanying drawings, thenumeral1 denotes a single-dose capsule for use in an espresso coffee machine to prepare a hot coffee and milk beverage, especially cappuccino.
• The espresso coffee machine, not illustrated because it is a very well known type of machine, basically comprises a device for producing a flow of hot or boiling water that is forced through thecapsule1 once the latter has been placed in a holder in a percolating chamber where the hot beverage is brewed.
• Thecapsule1 comprises a closed container orcartridge2, preferably in the shape of truncated cone made of a food safe plastic material.
• As illustrated inFIGS. 5 and 6, thebottom surface3 of thecartridge2 has acentral hole4, preferably circular, covered by aseal5 of suitable material designed to be opened or pierced by a hollow needle A forming part of the coffee machine. In an alternative embodiment, theseal5 forms an integral part of thebottom surface3 of thecartridge2, that is to say, it constitutes a portion of thesurface3 that can be easily pierced.
• Thecartridge2 holds a predetermined quantity of powdered soluble material MS comprising powdered milk or creamer or the like. The material MS may also comprise a predetermined quantity of powdered sugar.
• As illustrated in FIGS.1 and from3 to5, thecapsule1 also comprises a container orpod6 of filter paper or similar filter material, containing a tablet of infusion material MI, namely coffee powder, and positioned at thetop7 of thecartridge2.
• More specifically, as shown inFIGS. 1, 2,3 and5, the outerannular edge8 of thepod6 rests on, and is fixed to, a matchingannular protuberance9 of thecartridge2, running round the outer edge at thetop7 of thecartridge2.
• Theedge8 of thepod6 is fixed to theannular protuberance9 of thecartridge2 preferably by a gluing, heat-sealing or similar process.
• In a still more preferable solution, fixing is accomplished by the currently known process of ultrasound sealing.
• As illustrated inFIGS. 2, 3 and4, thecapsule1 is advantageously covered and sealed by asheet10 of cover material, such as, for example, aluminium foil or the like, which is applied to the end of theprotuberance9 of thecapsule1cartridge2, for example by gluing, heat sealing or ultrasound sealing, in such a way as to cover thetop11 of thepod6, thus keeping in the aroma of the coffee it contains.
• Thecover10 is designed to be removed just before thecapsule1 is placed by the user in the appropriate holder in the coffee machine. The user can then start preparing the cappuccino by pressing the coffee machine start button which causes a relative movement between the needle A and thecapsule1 such that the needle A pierces theseal5 and penetrates the hole in thecapsule1.
• The flow of hot water produced by the machine passes first through thepod6, creating a flow of infused coffee MI which falls onto and wets the soluble creamer MS inside thecartridge2 and from there flows through the hollow interior of the needle A to produce cappuccino that fills an underlying glass or cup (not illustrated).
• Thus, a delectable cappuccino with an optimum proportion of milk to coffee, can be prepared every time.
• Once used, thecapsule1 can be removed very easily from the machine, thanks especially to the closed, rigid structure of thecartridge2. Further, when thecapsule1 is moved away from the needle A, theseal5 tends to re-close thehole4, preventing residual water or beverage from dripping out and dirtying the user or the area around the machine.
• Moreover, it should be stressed that thecapsule1 disclosed herein can be safely handled and sold without any overwrapping thanks to the rigid structure of thecartridge2 and to thecover10 attached to the top of it and placed only over the top face of thepod6. This means less packaging material is required which in turn means not only considerable savings in terms of lower production and selling costs but also a reduced impact on the environment.
• It will be understood that the capsule as described herein can be modified and adapted in several ways without thereby departing from the scope of the inventive concept. Moreover, all the details of the invention may be substituted by technically equivalent elements.

Claims (21)

1. A capsule (1) used to prepare an infused beverage, characterised in that it comprises a first container (6) made of a substantially flexible material and containing a powdered infusion substance (MI), and a second container (2), attached to the first container (6), made of a substantially rigid material and containing a powdered soluble substance (MS).

2. The capsule according toclaim 1, characterised in that the flexible first container (6) is attached to the rigid second container (2) by heat sealing.

3. The capsule according toclaim 1, characterised in that the flexible first container (6) is attached to the rigid second container (2) by gluing.

4. The capsule according toclaim 1, characterised in that the flexible first container (6) is attached to the rigid second container (2) by ultrasound sealing.

5. The capsule according to any of the foregoing claims from1 to4, characterised in that at least the top of it is covered by a sheet (10) of protective material.

6. The capsule according to any of the foregoing claims from1 to4, characterised in that the flexible first container (6) comprises a pod (6) made of filter paper or other similar filter material.

7. The capsule according to any of the foregoing claims from1 to4, characterised in that the rigid second container (2) comprises a cartridge (2) made of a food safe plastic material.

8. The capsule according toclaim 7, characterised in that the bottom surface (3) of the cartridge (2) has a hole (4) in it, covered by a seal (5) of suitable material designed to be pierced or removed.

9. The capsule according toclaim 8, characterised in that the seal (5) constitutes a portion of the bottom surface (3) of the cartridge (2).

10. The capsule according toclaim 8, characterised in that the rigid second container (2) comprises a cartridge (2) made of a food safe plastic material; the seal (5) constitutes a portion of the bottom surface (3) of the cartridge (2); and the pod (6) of filter paper has an annular outer edge (8) fixed to a matching annular protuberance (9) on the plastic cartridge (2), at the top (7) of the cartridge (2) itself.

11. The capsule according toclaim 10, characterised in that the sheet (10) of protective cover material is removably placed over the top of the filter paper pod (6); the sheet (10) being fixed to the edge of the outer protuberance (9) of the cartridge (2).

12. The capsule according toclaim 1, characterised in that the infusion substance (MI) comprises powdered coffee.

13. The capsule according toclaim 1, characterised in that the soluble substance (MS) comprises powdered milk and/or creamer and similar soluble substances.

14. The capsule according toclaim 5, characterised in that the flexible first container (6) comprises a pod (6) made of filter paper or other similar filter material.

15. The capsule according toclaim 5, characterised in that the rigid second container (2) comprises a cartridge (2) made of a food safe plastic material.

16. The capsule according toclaim 6, characterised in that the rigid second container (2) comprises a cartridge (2) made of a food safe plastic material.

17. The capsule according toclaim 15, characterised in that the bottom surface (3) of the cartridge (2) has a hole (4) in it, covered by a seal (5) of suitable material designed to be pierced or removed.

18. The capsule according toclaim 16, characterised in that the bottom surface (3) of the cartridge (2) has a hole (4) in it, covered by a seal (5) of suitable material designed to be pierced or removed.

19. The capsule according toclaim 17, characterised in that the seal (5) constitutes a portion of the bottom surface (3) of the cartridge (2).

20. The capsule according toclaim 18, characterised in that the seal (5) constitutes a portion of the bottom surface (3) of the cartridge (2).

21. The capsule according toclaim 9, characterised in that the rigid second container (2) comprises a cartridge (2) made of a food safe plastic material; the seal (5) constitutes a portion of the bottom surface (3) of the cartridge (2); and the pod (6) of filter paper has an annular outer edge (8) fixed to a matching annular protuberance (9) on the plastic cartridge (2), at the top (7) of the cartridge (2) itself.

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