WO2016074818A1

WO2016074818A1 - Tea capsule having a filter layer and a protective layer

Info

Publication number: WO2016074818A1
Application number: PCT/EP2015/070594
Authority: WO
Inventors: Holger Hahn
Original assignee: Tpresso Ag
Priority date: 2014-11-11
Filing date: 2015-09-09
Publication date: 2016-05-19
Also published as: CH710353A2

Abstract

The invention relates to a packaging unit for plant parts, in particular tea, for the production of an infusion beverage, wherein the packaging unit comprises: a water-impermeable cup having at least one outlet opening, at least one water-permeable filter layer, which is arranged in the area of the outlet opening, and a water-impermeable protective layer. The protective layer separates at least the filter layer from the surroundings of the packaging unit, and the protective layer rests on the filter layer in a region on the side facing away from the content, and the filter layer and the protective layer are connected to the cup, at least one of the layers directly.

Description

Tea capsule with filter layer and protective layer

The present invention relates to a packaging unit for plant parts, in particular tea, for the production of an infusion beverage.

Such packaging units are known and are known in the production process of

Infusion drinks used by extraction of flavorings from the contents of the packaging unit, wherein the

Packaging unit is opened on opposite sides for the flow of hot water and

then hot water is introduced into the packaging unit and the water with the dissolved flavorings emerges from the packaging unit.

From the moment of packaging the contents to the moment of beverage production, the packaging unit has the task of preventing the diffusion of the flavoring substances and possibly preventing the oxidation of the contents.

A problem that occurs during infusion of tea, the unwanted leakage of small particles on the outlet side of the packaging unit together with hot water and the desired flavors. These particles should not be included in the device for preparing the

Drinks and not get into the drink. A known solution is to apply a filter layer in the manner of a tea bag in the area before the drink out of the packaging unit. Such- Filter layer must be permeable to water and sufficiently fine-pored that the unwanted particles the

Filter layer can not pass. Such

Filtering layer, however, the Wegdiffundieren of

Do not prevent flavorings.

The object of the present invention was to provide a packaging unit for plant parts, in particular tea, for the production of an infusion beverage, which is aroma-tight from the moment of packaging the contents until the moment of beverage production and during

Extraction process prevents particles from escaping along with the beverage at the exit port.

This object is achieved by a

Packing unit with the features of claim 1 solved.

In this case, the packaging unit, which has a cup with at least one outlet opening, at least one

water-permeable filter layer, which is arranged in the region of the outlet opening, and a

waterproof protective layer, wherein the

Protective layer at least the filter layer separated from the environment of the packaging unit, wherein the protective layer on the filter layer on the side facing away from the content in a region, and wherein the filter layer and the protective layer are connected to the cup, at least one of the two layers directly.

Further embodiments according to the invention emerge from the features of claims 2 to 11. In one embodiment, the protective layer is deposited on the filter layer in a planar region. In this way, unless extracted for extraction, the perforated protective layer may serve as mechanical support for the filter layer during extraction of the flavoring substances by water flowing through it. In addition, a flow of water is forced parallel to the protective layer and thus in the transverse direction to the filter layer, which improves the filter effect. In addition, both the filter layer and the protective layer can be particularly easily produced as a flat layer or film.

In one embodiment of the inventive

Packaging unit in which the cup has a flange, the filter layer and / or the protective layer are connected to the cup on the flange. The filter layer and the protective layer can thus be particularly easily arranged in a common, flat surface, when the cup of the packaging unit on the side on which the filter layer and the protective layer are to be attached, has a flange that defines the position of this flat surface and widened the rim of the cup to facilitate attachment.

In a further embodiment, the protective layer is designed such that it can be completely or at least partially removed by the user before the initiation of the extraction process without further aids. In the case where the protective layer is indirectly over the

Filter layer is connected to the cup, may

Removing the protective layer does not remove the filter layer also be removed or injured and the seal between the end of the filter layer and cup should not be jeopardized. This is done by forming a kind of predetermined breaking point between the protective layer and the

Filter layer achieved by the protective layer is indirectly connected via the filter layer to the cup and the adhesive force of the connection between the protective layer and

Filter layer is designed to be weaker than the adhesive force of the connection between the filter layer and cup. In one embodiment, the filter layer is directly connected to the cup. This compound does not need to be solved for the production of the infusion drink and can therefore be formed with great adhesion.

The adhesive force of the connection between the protective layer and the filter layer can simply be determined in terms of its strength, and thus be designed to be weaker than the connection between the filter layer and the cup, when

For example, an adhesive connection is used.

In a further embodiment, the protective layer is directly connected to the cup by a material-locking

Connection, in particular gluing or welding, connected. Such attachment of the protective layer on the cup can be carried out particularly easily as a tight connection. Bonding and welding, for example, are particularly suitable in this case.

Alternatively, for a direct connection the

Protective layer can be used with the cup also a positive connection. Also in this case, make sure that a good sealing effect is achieved. This can be achieved particularly well, for example, by crimping. A positive connection can also be combined with a material connection. Here, for example, the material connection for good

Ensuring sealing effect and the positive connection cause a mechanical relief of the material connection.

In principle, a multiplicity of materials can be used to produce the packaging unit according to the invention. The outer shell of the packaging unit formed from the cup and the protective layer must, inter alia, the loss of

Flavored and the penetration of oxygen into the

Prevent packaging unit. This succeeds very effectively if at least one layer of the cup and the

Protective layer through a film resp. a slide

formed for example with aluminum layer, which acts as a diffusion barrier. This allows for combinations with materials that are not used alone

Prevention of diffusion would be suitable.

In a further embodiment of the packaging unit according to the invention, a tab is attached to the protective layer. In order to remove the protective layer before starting the extraction, this can be done by hand without further aids. A protruding over the edge of the cup tab on the protective layer facilitates the gripping and tearing off of the protective layer.

Further, according to the invention, the method claimed in claim 12. By removing the protective layer prior to extraction, a clear drink can be produced. Coming back to the possible types of direct and indirect connection of the filter layer and the

Protective layer with the cup, the following useful combinations for the inventive result

Packaging Unit:

1) The filter layer is directly connected to the cup and the protective layer is directly connected to the cup. The connection of protective layer and cup can be solved separately. 2) The filter layer is directly connected to the cup.

The protective layer is connected to the filter layer, but with a weaker bond than that between the filter layer and the cup. This creates an indirect connection to the cup. Peeling off the protective layer leaves the connection between

Filter layer and cup untouched.

3) In addition to the situation described in 2), an easily detachable connection between the protective layer and the cup can be introduced. Thus, the protective layer is connected directly to the cup. The additional

Compound may serve to stabilize the poorly designed connection between protective layer and filter layer mentioned in 2).

4) The protective layer consists of two of each other

separable parts. It is directly connected to the cup with a first part. The filter layer is directly connected to this first part of the protective layer and thus indirectly connected to the cup. A second part of the protective layer is removable without dissolving the aforementioned compounds.

Embodiments of the present invention will be explained in more detail below with reference to figures. Show it

1 shows a longitudinal section through a packaging unit (100) according to the invention;

2 a and 2 b, Fig. 3 a and 3b are longitudinal sections through further embodiments of the inventive

Packaging unit (100).

In FIG. 1, a packaging unit (100) according to the invention with a water-impermeable cup (1), the contents of which (2) are the plant parts, with a

water-permeable filter layer (3) and a

impermeable protective layer (4). The

Filter layer (3) is connected to the cup (1) by a

Connecting means (5) connected. The protective layer (4) is directly connected to the cup by another connecting means (6). The protective layer (4) lies on the filter layer (3) on the side facing away from the content in a common, planar area (7). A flange (8) at the edge of the cup (1) forms the contact point for the connecting means (5) and (6). A tab (9) on the

Protective layer (4) offers the possibility to grasp the protective layer and to remove it from the packaging unit. In Figure 2 a is an embodiment of the

according to the invention, in which the protective layer (4) with the filter layer (3) is connected to the cup (1) by a connecting means (6). In this way, there is an indirect connection between protective layer (4) and cup (1). The connecting means (6 ^λ ) Α marked by the white point is with respect to

Adhesive force weaker designed as the connecting means (5), marked by the black dot, which the

Filter layer (3) with the cup (1) connects.

FIG. 2 b shows another embodiment of the invention

shown packaging unit according to the invention. Here, there is a positive connection ^{(6, λ)} between the

Protective layer (4) and the cup (1). In Figure 3a is an embodiment of

according to the invention, in which the filter layer (3) is fastened to a first part of the protective layer ( ^4Λ ), which in turn is fastened to the cup with the connection (6). At the designated separation points (10), the protective layer can be separated, so that a second part (4 ^λ> ) of the protective layer can be removed. A tab (9) is used to easily remove the

separable part of the protective layer. In this state, the packaging unit protects its contents. In Figure 3 b, the embodiment of Figure 3 a is shown after the second part (4 ^{, λ} ) of the protective layer has been removed. The filter layer is still connected by the connection (5) to the first part (4 ^λ ) of the protective layer and thus indirectly to the cup. In this state is the packaging unit ready for the production of the infusion beverage without foam.

Claims

claims

1. Packaging unit for plant parts, in particular tea, for the production of an infusion beverage, wherein the

Packaging unit includes:

a cup with at least one outlet opening,

- At least one water-permeable filter layer, which is arranged in the region of the outlet opening

a water-impermeable protective layer, the protective layer separating the filter layer from the environment of the packaging unit,

the protective layer on the filter layer, on the side facing away from the content, rests in one area, and the filter layer and the protective layer with the

Cups are connected, at least one of the two layers directly.

2. Packaging unit according to claim 1, characterized

characterized in that the protective layer on the

Filter layer rests in a flat area.

3. Packaging unit according to claim 1 or 2, characterized in that the outlet opening of the cup has a flange and the filter layer and / or the

Protective layer are connected to the cup on the flange.

4. Packaging unit according to claim 1 to 3, characterized in that the protective layer at least partially or completely of the cup and the filter layer

is designed removable.

5. Packaging unit according to one of claims 1 to 4, characterized in that a connection between the protective layer and the filter layer is formed weaker than the direct or indirect connection of filter layer to cup.

6. Packaging unit according to claim 5, characterized

characterized in that the filter layer is directly connected to the cup.

7. Packaging unit according to claim 5 to 6, wherein the connection between the protective layer and the filter layer is an adhesive bond.

8. Packaging unit according to one of claims 1 to 7, characterized in that the protective layer is directly connected to the cup by a material-locking connection, in particular gluing or welding.

9. Packaging unit according to one of claims 1 to 8, characterized in that the protective layer directly with the cup is connected by a positive connection, in particular flanging.

10. Packaging unit according to one of the preceding

Claims, characterized in that the cup and / or the protective layer comprise a film.

11. Packaging unit according to one of the preceding

Claims, characterized in that at the

Protective layer is attached a tab which the

Removing the protective layer facilitates.

12. A process for producing an infusion beverage by extraction of flavorings from the contents of a

Packaging unit according to one of claims 1 to 11, wherein at least partially removed protective layer of the cup is penetrated by means of an injection nozzle for water, hot water is injected through the injector into the packaging unit, so that the water with the dissolved flavorings through the filter layer from the Packaging unit exits.