Capsule and system for preparing a beverage

Abstract

The present invention relates to a capsule for preparing a beverage, the capsule comprising: - a substantially rigid capsule body having a circumferential side wall extending around an inner space of the capsule, said inner space being at least partially filled with beverage ingredients adapted to prepare the beverage; - a base wall covering the inner space at a first end of the side wall; - a flange circumferentially arranged at a second end of the side wall of the base body; - a lid covering the inner space at a second end of the side wall opposite the base wall and tightly closing the capsule; and - a filter element positioned in the inner space of the capsule between the beverage ingredients and the lid; and - a carrier disc provided in the inner space of the capsule, wherein the lid is removably attached to the flange for using the capsule in a beverage preparation device, and wherein the carrier disc is provided between the lid and filter element, said carrier disc comprising a plurality of pre-shaped outlet openings adapted to let the prepared beverage flow out of the inner space when the capsule is used in the beverage preparation device. The present invention also relates to a system comprising said capsule, a manufacturing method for manufacturing said capsule and the use of said capsule.

Description

Technical Field

[0001] The present invention relates to a capsule for preparing a beverage, the capsule comprising a generally rigid capsule body having circumferential sidewalls and a base wall extending around an internal space of the capsule, the internal space being at least partially filled with a beverage ingredient (such as coffee) for preparing the beverage, the base wall covering the internal space at a first end of the sidewalls, and the capsule comprising a cap covering the internal space at a second end of the sidewalls opposite to the base wall.

[0002] The present invention also relates to a system for preparing beverages. Background Technology

[0003] Capsules used to prepare beverages in a beverage preparation apparatus and exhibit the aforementioned characteristics are generally known in the prior art. The beverage preparation apparatus includes a brewing chamber in which the capsule is positioned. Liquid from the beverage preparation apparatus is injected into the capsule to extract the beverage from extractable components (typically roasted and ground coffee or tea) contained within the capsule's internal space, or to prepare the beverage from soluble components (typically instant coffee, instant tea, or instant milk, or chocolate-based products).

[0004] In most capsules currently on the market, the internal space of the capsule is airtight or liquid-tight to protect it from environmental influences before it is used in beverage preparation equipment, so as to maintain or prolong the freshness of the beverage ingredients during storage.

[0005] Capsules to date typically comprise a generally rigid capsule body having circumferential sidewalls extending around an internal space and a base wall covering the internal space at a first end of the sidewalls. At a second end of the sidewalls opposite the base wall, the capsule body has an open-fill side. Liquid-tight and gas-tight caps (e.g., aluminum caps) are positioned above the open-fill side of the capsule body to cover the internal space. In use, it is preferable to puncture the capsule at the base wall and / or the cap to form an injection opening for injecting a liquid (such as hot water) and / or an outlet opening allowing the prepared beverage to escape from the capsule.

[0006] More specifically, known capsules are conceived for use in beverage preparation apparatuses that deliver pressurized hot water to prepare espresso-type beverages, wherein the injection of pressurized hot water into the capsules results in the extraction of substances from coffee beverage components, and wherein the foam formed on the beverage corresponds to an espresso beverage with a crema layer obtained using a known piston-type espresso machine that uses high-pressure brewing.

[0007] For coffee beverages without crema, such as non-foamed coffee beverages, also known as filtered coffee, specific equipment is typically used where the beverage is prepared by non-pressurized filtration of a mixture of beverage ingredients and water.

[0008] It has been proposed to use some capsules intended for use in pressurized beverage devices for the preparation of crimson-free coffee.

[0009] EP 2952125 A1 discloses a capsule for preparing a beverage using an extractable product contained within its internal space. The capsule includes a circumferential first wall; a second wall that closes the circumferential first wall at a first end; and a flexible, sheet-like perforated and / or porous third wall that closes the circumferential first wall at a second open end opposite the second wall, thereby forming the internal space. The third wall forms the outermost boundary of the capsule in its axial direction and includes a woven or nonwoven filter material, such as filter paper.

[0010] WO 2019 / 013623 A1 discloses a capsule comprising a rigid capsule body having a circumferential wall and a base wall defining an internal space filled with beverage ingredients. The capsule has a cap of liquid-tight material covering the open-fill side of the circumferential wall opposite the base wall. The cap has a pre-formed outlet opening adapted to allow the prepared beverage to flow out of the internal space when the capsule is used in a beverage preparation apparatus. The outlet opening is liquid-tightly closed by a removable covering element extending above at least a portion of the cap.

[0011] However, these solutions are not entirely satisfactory in terms of capsule construction, ergonomic use by consumers, and results in the cup.

[0012] Therefore, one object of the proposed invention is to provide a capsule and system of simple construction for making filter coffee without crema, which has all the characteristics of filter coffee made with a drip coffee maker. Summary of the Invention

[0013] Therefore, the present invention provides a capsule as described herein for providing crema-free coffee, tea, milk or chocolate-based beverages.

[0014] This capsule is intended for use in the preparation of beverages and includes:

[0015] - A generally rigid capsule body having circumferential sidewalls extending around an internal space of the capsule, the internal space being at least partially filled with beverage ingredients suitable for preparing the beverage;

[0016] - A rigid base wall that covers the interior space at the first end of the side wall.

[0017] The base wall is integrated with the capsule body;

[0018] - A flange, which is circumferentially arranged at the second end of the sidewall of the base body;

[0019] - A lid, which covers the internal space at the second end of the sidewall opposite the base wall and tightly seals the capsule; and

[0020] - A filter element positioned within the internal space of the capsule between the beverage ingredients and the cap; and

[0021] - A support plate, which is disposed in the internal space of the capsule.

[0022] According to the invention, the cap of the capsule is removably attached to a flange for use in a beverage preparation apparatus, and a carrier tray is disposed between the cap and a filter element, the carrier tray including a plurality of pre-formed outlet openings adapted to allow the prepared beverage to flow out from the internal space when the capsule is used in the beverage preparation apparatus.

[0023] In the example where the capsule contains roasted and ground coffee as a beverage ingredient, the capsule’s specific structure allows for the extraction of coffee with limited foam and cream after the cap is removed during beverage preparation.

[0024] This freshly brewed coffee possesses the main characteristics of filter-brewed coffee, with very little crimson that disappears quickly, leaving only a ring of crimson around the rim of the cup. The result is a coffee with low body, very low acidity, and minimal bitterness, yet it is aromatic, smooth, and sweet.

[0025] In the proposed capsule, the carrier plate is positioned inside the capsule at a distance between 0.1 mm and 2 mm from the cap. This allows for the avoidance of coffee bed clumps in the brewing chamber of the espresso machine, as well as potential interactions between the carrier plate and the tearing surface of the extraction plate of the beverage preparation device.

[0026] As proposed, the thickness of the support plate is between 0.05 mm and 1.5 mm, preferably between 0.1 mm and 1 mm, and most preferably between 0.5 mm and 0.8 mm, which gives the support plate sufficient rigidity to resist ejection during extraction or after extraction due to the pressure of the expanded coffee powder clump.

[0027] The support plate includes an opening, which can be circular or elliptical. The proposed opening shape is optimized for ease of manufacture and reduced processing costs. However, other opening shapes can be chosen, depending on the desired cupping result.

[0028] In a preferred embodiment, the diameter of the opening is between 0.2 mm and 3 mm, and most preferably between 0.5 mm and 1 mm. These dimensions have been calculated for a leakage rate of approximately 300 ml / min.

[0029] In the proposed solution, the carrier disc includes between 50 and 150 openings, preferably between 60 and 120 openings, and most preferably between 80 and 100 openings. This structure with multiple openings avoids the potential channeling of water within the coffee grounds during extraction.

[0030] In addition, the even distribution of openings on the surface of the support plate also helps to avoid channel effects.

[0031] Preferably, the carrier disc is made of aluminum. This allows for easy recycling within the conventional aluminum stream when the capsule is made of aluminum.

[0032] Therefore, preferably, the capsule body, cap, and carrier tray are all made primarily of aluminum. The use of aluminum ensures better coffee protection and a longer shelf life. Additionally, the capsules are easier to terminate their lifespan and easier to recycle.

[0033] In an alternative approach, the carrier plate is made of plastic or laminated plastic components.

[0034] In this particular capsule structure, the filter element is disc-shaped and includes a nonwoven material layer adapted to prevent the flowing coffee from passing through and reduce the formation of a crema layer.

[0035] Preferably, the filter element is compostable and / or biodegradable, and may be made of cellulose-based materials.

[0036] The proposed filter element has a thickness between 0.005 mm and 0.3 mm, and an air permeability of 100 l / m according to ISO 9237. 2 / s to 5000l / m 2 Within the range of / s, and the weight is within 5g / m 2 Up to 600g / m 2 Within the range.

[0037] In the currently envisioned solution, the filter element is mounted on a carrier plate. This simplifies the capsule assembly process. Furthermore, the filter element can be secured to the carrier plate.

[0038] The capsule's cap includes a free pull tab that protrudes from it. The pull tab is integrated with the cap, allowing the entire cap to be removed. This makes handling and opening much easier.

[0039] In one proposed embodiment, the cap includes at least one aluminum layer to ensure a better shelf life for the coffee in the capsule.

[0040] In addition, the cap may include a plastic layer and / or a heat-sealing layer to ensure food-grade compatibility, thereby sealing the cap to the flange of the capsule.

[0041] The thickness of the cover is between 0.01mm and 0.05mm.

[0042] The proposed capsule contains a beverage ingredient. Preferably, the beverage ingredient is ground coffee, preferably in an amount of at least 4g, and more preferably between 4.5g and 15g.

[0043] Furthermore, the present invention provides a system as described herein.

[0044] The system of the present invention is intended for the preparation of beverages. The system includes replaceable capsules and a beverage preparation apparatus having a fluid dispensing device and a brewing chamber. The fluid dispensing device is capable of supplying a certain amount of fluid, such as water, to the capsule at a pressure between 0.1 bar and 20 bar. The brewing chamber includes a first component for holding the capsule and a second component for closing the brewing chamber.

[0045] The present invention proposes the use of replaceable capsules according to the invention in a beverage preparation apparatus, wherein a second component of the brewing chamber of the beverage preparation apparatus includes an extraction plate for engaging with the replaceable capsule at a second end of the sidewall when the brewing chamber is kept closed, the extraction plate including a tear surface facing the carrier plate at the second end of the capsule during use, wherein the carrier plate of the capsule located in the closed brewing chamber during use is not altered by the tear surface of the extraction plate.

[0046] According to the present invention, the extraction of beverage components is carried out at a pressure of less than 8 bar, more preferably less than 5 bar.

[0047] Furthermore, the present invention provides a method for manufacturing capsules suitable for preparing beverages according to the present invention.

[0048] The manufacturing method includes the following steps:

[0049] - Provide a generally rigid capsule body having circumferential sidewalls and a rigid base wall extending around an internal space to be at least partially filled with beverage ingredients suitable for preparing the beverage, the rigid base wall covering the internal space at a first end of the circumferential sidewalls, the base wall being integral with the capsule body;

[0050] - The internal space is filled with a certain amount of the beverage ingredients through the opening opposite the base wall of the capsule body;

[0051] - After filling the internal space with the beverage ingredients, insert the filter element into the internal space;

[0052] - A support tray is inserted above the filter element within the internal space; optionally, the filter element and the support tray are simultaneously inserted into the internal space of the capsule; and

[0053] -The opening-filling side is closed by attaching the cap to the flange of the capsule body that extends on the opening-filling side.

[0054] The cap is equipped with a pull tab and is removed from the capsule before use.

[0055] The carrier tray includes multiple outlet openings through which the prepared beverage can flow out of the capsule during use. The outlet openings are fluidly sealed by a cap extending on the filling side of the opening.

[0056] Specific embodiments of the invention are described below. These objectives are achieved by the invention, namely, the capsule, the system, and the method of capsule manufacturing. Attached Figure Description

[0057] The invention is further described with reference to the following examples and accompanying drawings, which form part of this invention. Unless clearly and explicitly indicated, the drawings are not intended to limit the scope of the invention in any way. It should be understood that the invention is not intended to be limited in any way to these exemplary embodiments and illustrations.

[0058] Note that the accompanying drawings are merely schematic diagrams illustrating embodiments of the invention by way of non-limiting example.

[0059] Embodiments of the present invention will now be described by way of example with reference to the following accompanying drawings, in which:

[0060] - Figure 1a This is a perspective side view of a capsule tightly sealed before use in a beverage preparation apparatus according to the present invention;

[0061] - Figure 1b This is a perspective side view of the capsule according to the invention, wherein the cap is partially removed;

[0062] - Figure 1c This is a perspective side view of a capsule according to the invention, wherein the cap has been removed and it is ready for use in a beverage preparation apparatus;

[0063] - Figure 2a This is a schematic cross-sectional view of a capsule according to a first embodiment of the present invention;

[0064] - Figure 2b yes Figure 2aAn enlarged view of the bottom portion of the capsule as indicated;

[0065] - Figure 2c yes Figure 2a A view of the capsule's carrier plate;

[0066] - Figure 3a This is a schematic cross-sectional view of a capsule representing an improved solution according to a first embodiment of the present invention;

[0067] - Figure 3b yes Figure 3a A magnified view of the capsule;

[0068] - Figure 4 This is a schematic diagram of a capsule according to a second embodiment of the present invention;

[0069] - Figure 5 This is a schematic diagram of a capsule according to a third embodiment of the present invention;

[0070] - Figure 6 This is a schematic diagram of a capsule according to a fourth embodiment of the present invention;

[0071] - Figure 7 This is a schematic diagram of a capsule according to a fifth embodiment of the present invention;

[0072] - Figure 8 It is a schematic diagram of a first process for assembling a filter element and a carrier plate or carrier plate into a capsule according to one or more of the proposed implementation schemes;

[0073] - Figure 9a , Figure 9b and Figure 9c It is a schematic diagram of a second process for assembling a filter element and a carrier plate or carrier plate in a capsule according to one or more of the proposed implementation schemes;

[0074] - Figure 10 It is a schematic diagram of a third process for assembling a filter element and a carrier plate or carrier plate in a capsule according to one or more of the proposed implementation schemes;

[0075] - Figure 11a and Figure 11b It is a schematic diagram of a fourth process for assembling a filter element and a carrier plate in a capsule, according to one or more of the proposed implementation schemes;

[0076] - Figure 12 It is a schematic diagram of a fifth process for assembling a filter element and a carrier plate or carrier plate in a capsule, according to one or more of the proposed implementation schemes;

[0077] - Figure 13 It is a schematic diagram of a sixth process for assembling a filter element and a carrier plate or carrier plate in a capsule, according to one or more of the proposed implementation schemes;

[0078] - Figure 14 It is a schematic diagram of a seventh process for assembling a filter element and a carrier plate or carrier plate in a capsule, according to one or more of the proposed implementation schemes;

[0079] - Figure 15 It is based on one or more of the proposed implementation schemes for the purpose of...

[0080] A schematic diagram of the eighth process in which the filter element and carrier plate or the carrier plate is assembled in the capsule. Detailed Implementation

[0081] As used in this specification, the words “including,” “contains,” and similar terms should not be construed as having an exclusive or exhaustive meaning. In other words, these terms are intended to mean “including but not limited to.”

[0082] Any references to prior art documents in this specification should not be construed as an admission that such prior art is well-known or constitutes part of common general knowledge in the art.

[0083] Figure 1a The image shows capsule 1 before use in a beverage preparation apparatus according to the present invention (defined as a storage state). Referring to Figure 2, Figure 1a The capsule 1 includes a capsule body 2. The body 2 includes a truncated conical sidewall 2a extending circumferentially around an internal space of the body. The capsule also includes a rigid base wall 3 integral with the capsule body 2, which closes the internal space at a first end of the sidewall of the capsule body 2. A flange 4 extends radially outward from a second end of the sidewall of the capsule body 2. At the second end of the sidewall, the capsule body 2 has an open-fill side.

[0084] Typically, the capsule body 2 is processed to food grade and, in most cases, includes a lacquer layer or polymer film layer applied to the inner side of the capsule body (in... Figure 9b (Identified as 2b in Chinese).

[0085] The capsule also includes a flange 4 attached to the capsule body to seal the capsule cap 5. The cap 5 can be manually removed from the capsule by pulling a pull tab 6. In this case, the pull tab 6 is integrated with the cap 5, but alternative solutions can also be used.

[0086] The cover 5 is a flexible sheet foil made of aluminum, with an optional lacquer or polymer layer on the sealing side.

[0087] When the cover 5 includes a paint layer on its sealing side, the thickness of the paint layer may be from 0.003 mm to 0.03 mm. When the cover 5 includes a polymer layer on its sealing side, the thickness of the polymer layer may be from 0.01 mm to 0.05 mm.

[0088] The cap 5, designed for removal using a pull tab, is attached to the flange 4 using an adhesive layer. The adhesive is applied in the form of an adhesive layer and can be, for example, a heat-sealing varnish layer or a polymer film layer.

[0089] For example, the sealing layer forming the adhesive material can be a layer between 0.003 mm and 0.03 mm.

[0090] The adhesive layer allows the cap 5 to be removed from the flange 4 of the capsule without causing any damage to the capsule 1.

[0091] Before sealing the capsule, the interior space is filled with beverage ingredients. In this case, the capsule is filled with coffee powder (from roasted and ground coffee) before tightly sealing it with the cap to maintain the freshness of the coffee. Depending on the capsule size, the weight of the coffee ranges from 4g to 15g. However, tea, milk, or chocolate ingredients can also be considered.

[0092] Figure 1b The capsule shows Figure 1a The capsule, in which the cap 5 is partially removed by tearing the tongue 6, and... Figure 1c The same capsule is shown in the figure, with the cap 5 completely removed. As shown, the second end (filled side) of the capsule is no longer closed, and a membrane defining a carrier disk 7 is presented on the inside of the capsule. The carrier disk 7 includes multiple pre-formed outlet openings 8 for the beverage (here, coffee) to be prepared in the beverage preparation apparatus.

[0093] The pre-formed outlet opening 8 of the carrier tray 7 is covered by the capsule cap 5, thereby sealing the capsule to maintain an airtight seal of the internal space of the capsule, thus ensuring the freshness of the beverage ingredients inside the capsule during storage.

[0094] As can be seen in cross-sectional views of various embodiments of the capsule of the present invention (e.g., see...). Figure 2a The capsule also includes a filter element 9 positioned between the coffee powder and the carrier tray 7 within its internal space. The filter element 9 prevents solid particles of the beverage ingredients (such as coffee particles or tea leaves) from flowing out of the capsule and into the end consumer's cup during extraction.

[0095] In the proposed invention, both the capsule body 2 and the cap 5 are made primarily of aluminum.

[0096] However, other materials can be envisioned for the capsule body and lid.

[0097] For example, the capsule body and cap can be made of a plastic polymer material, or the capsule body and cap can be made of a paper-based material.

[0098] As understood, the capsules of this invention are used in accordance with conventional methods. A conventional high-pressure beverage preparation apparatus compatible with coffee capsules is used for extraction. The beverage preparation apparatus includes a fluid dispensing device and a brewing chamber. The fluid dispensing device is capable of supplying a certain amount of fluid, such as water, to the capsule at a pressure between 0.1 bar and 20 bar. The brewing chamber includes a first component for holding the capsule and a second component for closing the brewing chamber. The second component of the brewing chamber includes an extraction plate with a tear surface for engaging the capsule at its second end opposite its base wall.

[0099] The conventional extraction process of a sealed capsule in a beverage preparation device can be summarized as follows: The capsule is inserted into the brewing chamber of the beverage preparation device. A fluid distribution device supplies a certain amount of fluid, such as water, to the capsule through the base wall 3 inside the capsule, allowing the coffee to saturate and then extract. As the pressure inside the capsule increases, the capsule cap comes into contact with the torn surface of the extraction plate, and the cap is altered by the torn surface, thereby forming an opening that allows coffee to flow out of the capsule.

[0100] The interaction between the lid and the torn surface creates an outlet opening on the lid surface for coffee to flow out, which participates in the formation of foam and cream during the preparation process.

[0101] The use of conventional capsules (closed capsules) in the above process results in coffee extraction at a pressure between 8 bar and 20 bar.

[0102] In the extraction process of the capsule of the present invention, the capsule cap is removed before the capsule is inserted into the brewing chamber of the beverage preparation device. A fluid dispensing device supplies a certain amount of fluid, such as water, to the capsule through the base wall 3 inside the capsule to saturate it with coffee and then extract it. The extracted coffee passes through the filter element 9 and then flows out through the outlet opening of the carrier plate 7. During extraction, the carrier plate 7 (located at a certain distance from the flange of the capsule) does not come into contact with the torn surface of the extraction plate of the beverage preparation device, so that the carrier plate 7 is not torn or altered during capsule extraction.

[0103] Depending on the amount of coffee inside the capsule and the structure of the filter element, the use of the capsule of the present invention (in a conventional beverage preparation apparatus) results in coffee extraction at a pressure between 0.1 bar and 6 bar.

[0104] Because the cap is removed from the capsule before use in the beverage preparation device and when the carrier tray is inside the capsule (see, for example) Figure 2a There is no interaction between the bearing plate 7 and the torn surface of the extraction plate.

[0105] More specifically, when using the capsule 1 of the present invention to prepare coffee in a beverage preparation apparatus, the user removes the cap 5 by tearing the tongue 6 before inserting the capsule into the beverage preparation machine. The base wall 3 of the capsule body 2 is further pierced and opened by the piercing device of the beverage preparation apparatus to supply water into the capsule under pressure for preparing the coffee beverage.

[0106] Because the capsule is not sealed when used in a beverage preparation apparatus (cap 5 is removed and the outlet opening is accessible), the extraction pressure that accumulates inside the capsule is limited (0.1 bar to 6 bar), and the formation of foam and cream during extraction is limited.

[0107] Therefore, since no pressure buildup and sudden pressure drop occur due to the interaction between the coffee / lid / opening element and the torn surface of the extraction plate of the beverage preparation device (as with conventional capsules), the coffee obtained in the cup has very little or no crema.

[0108] The capsules of this invention allow for the preparation of crimson-free coffee, tea, milk, or chocolate based on the beverage ingredients inside the capsule.

[0109] Figure 2a A first embodiment of the capsule of the present invention is shown. As disclosed, the capsule includes a carrier disk 7 within an internal space, the carrier disk including a plurality of pre-formed outlet openings 8.

[0110] like Figure 2b ( Figure 2a As shown in the enlarged view of the bottom component portion (as indicated in the image), the carrier plate 7 is positioned inside the capsule at a distance between 0.1 mm and 2 mm from the cover 5, which is sealed to the flange 4.

[0111] The gap between the capsule cap 5 (and thus the flange 4 once the cap is removed for extraction) and the carrier plate 7 provides a recess for the torn surface of the extraction plate of the beverage preparation device to protrude inside the capsule without contacting the carrier plate 7 and therefore without contacting the coffee in the capsule.

[0112] The carrier disk 7 is as follows Figure 2c The membrane shown is essentially circular, and its diameter is approximately the inner diameter of the capsule at the position of the positioning / insertion / holding (depending on the assembly process) carrier plate 7.

[0113] Therefore, in the proposed implementation, the diameter of the carrier disk 7 is approximately 29.5 mm and 30.5 mm.

[0114] In the proposed implementation, the carrier plate is made of aluminum. Its thickness is approximately 0.3 mm, but can vary between 0.1 mm and 1 mm.

[0115] In alternative solutions, the carrier disk 7 can be made of plastic or a laminate containing, for example, polyolefins (such as polypropylene, polyethylene, or any other semi-crystalline polymer). The carrier disk 7 can also be made of paper-based materials, such as coated paper or laminated paper.

[0116] like Figure 2c As shown, the pre-formed outlet opening 8 is a circular opening evenly distributed on the surface of the carrier plate. This uniform distribution of the outlet openings ensures a uniform flow rate of coffee exiting capsule 1. It also helps to prevent beverage (coffee powder clumps) from forming channels inside the capsule.

[0117] The diameter of the opening is set to approximately 0.8 mm to 0.85 mm, but the diameter can vary between 0.2 mm and 3 mm, and most preferably between 0.5 mm and 1 mm.

[0118] The number of preformed outlet openings can vary depending on the size of the capsule and the desired coffee delivery speed. In the disclosed embodiments, the carrier tray 7 includes between 10 and 120 openings, preferably about 90 openings, and in the presented embodiment, 92 openings.

[0119] In an alternative embodiment, the preformed outlet opening may be elliptical in shape.

[0120] As shown in the figure, the capsule also includes a filter element 9, which is positioned on the ingredient powder (e.g., coffee powder) after the capsule is filled during a possible assembly process, and a carrier plate 7 is positioned between the filter element and the cap 5.

[0121] like Figure 2b As shown in the enlarged view, when the capsule is inverted, the filter element 9 is positioned on the support plate 7. The filter element is then supported by the support plate 7 within the container. The filter element remains flat inside the capsule and does not come into contact with the torn surface of the extraction plate of the beverage preparation device during extraction.

[0122] The use of a two-piece design allows for the use of non-sealed filter materials, which is beneficial for sustainability.

[0123] As proposed in this embodiment, the filter element 9 is circular (disc-shaped) and has a diameter smaller than that of the carrier disk 7, i.e., between 28 mm and 30.5 mm, and is typically 0.1 mm smaller than the carrier disk.

[0124] However, in an alternative embodiment, the diameter of the filter element 9 may be similar to the diameter of the carrier disc 7.

[0125] The filter element 9 is made of a nonwoven material that is suitable for preventing / inhibiting the rapid passage of outflowing coffee and reducing the formation of a crema layer during beverage extraction.

[0126] The filter element is preferably made of compostable and / or biodegradable material, and may be made of cellulose-based material having the following technical characteristics. For example, it may be a paper-based filter element.

[0127] The thickness of filter element 9 in the proposed embodiment is between 20 micrometers and 300 micrometers, and its air permeability is 100 l / m according to ISO 9237. 2 / s to 5000l / m 2 Within the range of / s, and the weight is within 5g / m 2 Up to 600g / m 2 Within a certain range. For example, it can be a paper-based filter element.

[0128] Filter elements may include layers of nonwoven material that are attached to another filter layer in any known manner.

[0129] In the proposed Figures 2a to 2c In one implementation, the filter element 9 and the carrier plate 7 are independent components positioned relative to each other. However, they can be assembled together, for example, by gluing. This would then change the assembly process within the capsule, as the insertion of the filter element and the carrier plate would be performed in a single step.

[0130] The proposed circular carrier disk 7 may have a conical shape on its periphery to fit (press-fit) into a capsule having a truncated conical shape. However, other alternative shapes and arrangements of the carrier disk within the capsule are conceivable.

[0131] Importantly, when the cap 5 is removed and the capsule 1 is extracted from the beverage preparation machine, the carrier plate 7 and the filter element 9 remain in place inside the capsule. Several assembly processes are conceivable, and these processes will be disclosed later in conjunction with the proposed embodiments of the capsule according to the invention.

[0132] Figure 3a and Figure 3b An improved embodiment of the first embodiment of the present invention is shown, wherein a second filter element 10 is added. The second filter element 10 is also a nonwoven filter element. It is positioned and fixed on the side of the support plate facing the lid (directly facing the coffee-opposite side of the cone plate of the beverage preparation device).

[0133] The purpose of this filter element is to allow the coffee to flow laterally while matching the perforations with the flat top surface of the truncated pyramid.

[0134] As mentioned above, the second filter element is made of nonwoven material; however, it can be made of any suitable element compatible with the desired function.

[0135] The second filter element 10 is positioned inside the capsule and does not contact the cap.

[0136] The second filter element 10 may have the following dimensions, ranging from 28 mm to 30.5 mm.

[0137] In this embodiment, the second filter element 10 is substantially circular, with a diameter slightly smaller than that of the carrier disc 7.

[0138] Combination Figures 2a to 2c The proposed assembly process and structure can still be applied to this improved solution.

[0139] Figure 4 A partial cross-sectional view of the capsule is presented, in which the carrier disc 7 is made of plastic. The carrier disc is an injection-molded plastic element that includes multiple pre-formed outlet openings 8 and supports 7a on the side facing the beverage ingredients (e.g., coffee) to accommodate the filter element 9.

[0140] The pre-formed outlet opening 8 of the carrier plate is approximately 0.6 mm away from the cap. Due to this assembly, there is no interaction between the torn surface of the extraction plate of the beverage preparation device and the carrier plate 7.

[0141] The carrier plate 7 has a diameter similar to the inner diameter of the capsule at the positioning position. Therefore, the diameter is between 29.5 mm and 30.5 mm.

[0142] As previously disclosed, the preformed outlet opening 8 is a circular opening evenly distributed on the carrier plate and having a diameter of about 0.8 mm to 0.85 mm.

[0143] In the proposed embodiment, the carrier plate 7 includes approximately 90 pre-formed outlet openings. The number of outlet openings may range from approximately 10 to 120 pre-formed outlet openings.

[0144] Filter element 9 has a combination with Figures 2a to 2c The filter element described has similar characteristics. Furthermore, it can be fixed to the carrier plate 7 by any known means or simply held on the carrier plate due to shape adjustments.

[0145] The carrier plate also includes tapered feet 11 for direct fitting within the capsule during assembly. As proposed in this embodiment, the feet 11 can be placed on the cover 5. At the foot location, the thickness of the carrier plate 7 can be approximately 1.6 mm to 2.0 mm (for Original Line). (Capsule), but it can actually depend on the size of the capsule.

[0146] exist Figure 5 In the implementation scheme shown, with Figure 4 As shown in the embodiment, the carrier plate 7 is an injection-molded plastic element. The filter element 9 is mounted on the carrier plate 7 in a support 7a. The filter element 9 remains loose in the support 7a, but is held on the support of the carrier plate 7 by a sealing point 12.

[0147] Therefore, the filter element 9 is sealed to the carrier plate 7 at one point. One sealing point 12 may be sufficient to hold the filter element 9 on the carrier plate 7; however, other sealing points are conceivable.

[0148] Sealing can be achieved through various sealing techniques, such as heat sealing or ultrasonic sealing. This list is not exhaustive.

[0149] exist Figure 6 In the implementation scheme shown, with Figure 4 As shown in the embodiment, the carrier plate is an injection-molded plastic element. The filter element 9 is assembled on the carrier plate 7 in a support 7a of a corresponding shape.

[0150] In addition, the filter element 9 remains loose in the support 7a and is held on the carrier plate 7 by the pin 13.

[0151] The pin is preferably a plastic pin 13. It holds the filter element 9 in a support 7a located approximately in the middle of the filter element. However, other positions are conceivable.

[0152] Figure 7 It was proposed Figure 5 and 6 An alternative solution to the implementation shown in the figure is to hold the filter element 9 on the carrier plate 7.

[0153] The support tray 7 includes at least one clip 14 located on the periphery of the support tray 7 to ensure that the filter element 9 is held in the support 7a. The clip 14 may be continuous along the periphery of the support tray 7, or several clips 14 may be positioned along the periphery of the support tray 7.

[0154] The clip 14 is integrated with the carrier plate 7, that is, the clip 14 is made of plastic and is ejected together with the carrier plate 7.

[0155] In the proposed invention, it is important to retain the carrier tray and filter element within the capsule after the peelable membrane has been removed. In practice, after the peelable membrane is removed for use in a beverage preparation apparatus, if the carrier tray and filter element happen to be positioned on the beverage ingredients during capsule manipulation and insertion into the beverage dispenser, the carrier tray, filter element, and even the beverage ingredients may fall off the capsule body.

[0156] Therefore, it is important to ensure that the carrier plate and filter element remain inside the capsule.

[0157] The capsule elements used in the disclosed combination contribute to the filter-like profile of the obtained coffee in the cup.

[0158] - Filter element 9, which can be paper-based, is used to retain fine particles extracted from the coffee grounds into the cup. The filter element also helps to slowly release pressure from the coffee grounds during extraction, reducing crema formation and contributing to a smoother, filter-like profile in the cup.

[0159] - The perforated aluminum support plate, designed to prevent interaction between coffee grounds and the tearing surface of the beverage device's extraction plate, again helps to slowly release pressure from the coffee grounds during extraction, reducing crema formation and contributing to a smoother, filter-like profile in the cup.

[0160] - The absence of a sealing membrane (because it is removed before the capsule is used in the beverage device) reduces the compaction of coffee grounds during the initial stage of extraction and eliminates water resistance during extraction, which again helps reduce crema formation and contributes to a smoother, filter-like profile in the cup.

[0161] The proposed assembly process will be Figures 8 to 15 It is publicly available in China.

[0162] Figure 8 The first process for assembling the filter element and the carrier plate, or simply assembling the carrier plate into the capsule, is shown.

[0163] As shown in the figure, a force between 10N and 500N is applied to the surface of the support plate 7 with the help of a specific tool to push the support plate downward into the truncated conical capsule body 2.

[0164] The capsule body is cone-shaped, and the support plate will apply a force in the horizontal direction to the side wall of the capsule body, which will keep the support plate in the proper position inside the capsule body.

[0165] As shown in the figure, a specific tool can be constructed relatively simply. Its dimensions should be limited to allow insertion into the capsule body to apply the required pressure, thereby ensuring proper positioning of the carrier disc within the capsule body. For example, it can be constructed using a pressure piston 15, but alternative constructions are conceivable. The process can be considered a press-fit process.

[0166] This process can be applied to:

[0167] - The carrier plate in the capsule body after the beverage ingredients are filled and the filter element is inserted; or

[0168] -When the filter element is first positioned on the carrier plate / assembled with the carrier plate, both the carrier plate and the filter element are present.

[0169] Therefore, the proposed process can be applied to one or more implementation schemes in the described implementation scheme.

[0170] Figure 9a , Figure 9b and Figure 9c The assembly process uses the concept of press-fit (such as bonding). Figure 8 (as disclosed), and additionally, heating is applied during and / or after the positioning of the carrier plate 7.

[0171] In the proposed embodiment, the pressure piston 15 applies a force of approximately 50 N to 100 N, and additionally, the pressure piston 15 is heated during the application of the force. Figure 9a The heat applied to the support plate 7 (which may also connect to or hold the filter element 9, but is not shown here) inside the capsule body 2, which is in contact with the sidewall, causes the paint 2b applied to the inside of the capsule body 2 to melt, and creates a connection between the internal components of the sidewall and the support plate. Figure 9b And once the temperature drops, this connection will keep the carrier disc inside the capsule body. The connection can be as follows: Figure 9b The form of bead 16 is shown.

[0172] Heat can also be applied from the outside of capsule 1 to one or both sides of capsule body 2. For example... Figure 9c As shown, if needed, the two heating sources (from the pressurized piston and from the side heating) can be combined.

[0173] Figure 10 The assembly process proposed in the paper uses a combination Figure 8 The open press-fit process has a higher pushing and squeezing force to cause deformation of the bearing plate 7.

[0174] A push tool 17 with a convex shape can be used.

[0175] The pushing tool 17 pushes the support plate 7 downward into the capsule and slightly deforms it into a concave plate, so that the support plate 7 is no longer flat. Once positioned within the capsule body 2, the support plate 7 cannot return to its initial flat shape with the application of lateral forces, thus preventing any movement of the support plate 7. The support plate 7 is then held inside the capsule body 2 at a certain distance from the flange (as if already joined). Figure 2a and Figure 2b (As discussed).

[0176] Using the proposed assembly process, it is possible to obtain according to Figure 1c The capsules.

[0177] The assembly process is disclosed in conjunction with the carrier plate 7, but it can also be used in embodiments where the filter element 9 and the carrier plate 7 are connected together, as shown, for example, in Figures 2 and 3.

[0178] Figure 11a and Figure 11b An assembly process is proposed, in which the capsule's carrier plate 7 is clamped inside the capsule body by the local deformation of the capsule from the outside of the capsule.

[0179] exist Figure 11a During the assembly process, once the carrier plate 7 (or the carrier plate 7 plus the filter element 9) is inserted into the capsule body 2, the clamping tool 18 presses the capsule body from the outside to cause local deformation of the capsule body directly above the position of the carrier plate 7, so that the carrier plate 7 is kept in the proper position inside the capsule.

[0180] The outer side of the capsule body is locally deformed from the outside along the circumference of the capsule (e.g., every 90°). This is sufficient to ensure the effective retention of the support disc 7.

[0181] The proposed assembly process (clamping process) can also be combined with a press-fit process (such as...). Figure 8 (As shown in Figure 9) and heating are associated to melt the inner capsule lacquer layer to produce beads 16.

[0182] In the variations of the clamping process described above, Figure 11b It is proposed to use clamping tool 18a to perform local deformation at the edge of the flange, for example, to perform three deformations around the edge of the flange, in order to keep the carrier disk 7 within the capsule body.

[0183] This variant can be performed before or after cap positioning and / or sealing. When using this variant, the distance between the support disc 7 and the flange of the capsule body will be less than the distance required for localized deformation on the sidewall of the capsule body. Figure 11a ).

[0184] Now refer to Figure 12 The assembly process discloses the use of induction heating to provide a way to keep the carrier plate 7 inside the capsule body 2.

[0185] The method proposed is to seal the aluminum-made carrier disk 7 inside the capsule using an anode A applied directly to the carrier disk 7 and a cathode C applied to the outer sidewall of the capsule. Localized heat is generated by a high current applied through the welded contact area.

[0186] This process can be combined with a press-fit process, as previously disclosed, in which pressure is applied to the carrier plate 7. When pressure is applied to the carrier plate 7, the periphery of the carrier plate 7 will contact the inside of the capsule sidewall 2a through its edge. The localized heat generated by the application of a high current will create a weld at the contact area.

[0187] Welding can be performed at one or more points to ensure effective retention of the carrier plate 7. For example, four weld points positioned at 90° intervals around the circumference of the carrier plate 7 work perfectly.

[0188] Figure 13 The assembly process shown presents a capsule 1 with a riveted shoulder 19 just below the flange 4. The riveted shoulder 19 is a constricted, flat shoulder formed on the side wall 2a of the capsule body 2. During assembly, the carrier plate 7 is inserted into the interior of the capsule body 2.

[0189] With the stacked shoulder 19 being slightly tapered, it can hold the carrier plate 7 in the proper position inside the capsule body 2.

[0190] If the stacking shoulder is not tapered, the carrier plate 7 can be sealed (by any known means) onto the flat surface of the stacking shoulder 19.

[0191] In any case and as previously mentioned, the filter element 9 may be positioned and / or attached to the carrier disc 7 before the carrier disc 7 is inserted into the capsule body 2.

[0192] Figure 14 The geometry of the proposed carrier disk 7 and the associated assembly process are shown.

[0193] The support plate 7, made of aluminum-based material, is no longer completely flat, but has a surrounding tapered flange 20 along its periphery. The tapered flange 20 forms an angle with the flat surface of the support plate 7. This angle is similar to the truncated cone angle of the capsule body 2, so as to mate with the sidewall 2a inside the capsule body 2.

[0194] The carrier disk 7 is held in the capsule 1 by bringing the two conical surfaces close to each other at a very close angle.

[0195] Therefore, in terms of assembly, the carrier disc 7 (with or without the filter element 9) is simply inserted into the capsule body 2 until the two conical surfaces come into contact with each other, thereby holding the carrier disc 7 in place inside the capsule.

[0196] Figure 15 An alternative method for holding the carrier plate 7 in place inside the capsule body 2 is proposed. In this embodiment, after the capsule has been filled with beverage ingredients and the filter element 9 and carrier plate 7 have been inserted into the capsule body, a membrane 21, including a pre-cut opening smaller than the opening (second end of the capsule body) of the capsule body, is sealed onto the flange 4 of the capsule 1.

[0197] Then the cap 5 (together with the pull tab 6) is sealed onto the membrane 21 to airtightly seal the capsule.

[0198] During use, the consumer will use the pull tab 6 to remove the cap 5, the membrane 21 will remain in place on the capsule (sealed on the flange) and the carrier tray 7 will remain inside the capsule. Due to the size fit of the membrane, the carrier tray 7 will be placed on the membrane 21 and held inside the capsule.

[0199] The presented implementation schemes for the carrier disc and the assembly process can be combined whenever needed and can improve the retention of the carrier disc 7 (with or without the filter element 9) inside the capsule body 2.

[0200] The proposed capsule can be associated with a sealing device located on the flange of the capsule, thereby ensuring a liquid-tight connection between the capsule and the injection component of the beverage production machine. For example, the sealing device could be a silicone ring applied to the base of the flange and the sidewall of the capsule body, or one or more protrusions or bridges formed on (and integral with) the flange. Such sealing devices (not shown) contribute to the liquid-tight arrangement with the beverage production machine.

[0201] Although the invention has been described by way of example, it should be understood that variations and modifications may be made without departing from the scope of the invention as defined in the claims. Furthermore, if known equivalents exist for specific features, such equivalents should be incorporated as expressly mentioned in this specification.

Claims

1. A capsule for preparing a beverage, said capsule comprising: - A rigid capsule body having circumferential sidewalls extending around an internal space of the capsule, the internal space being at least partially filled with beverage ingredients suitable for preparing the beverage; - Rigid base wall, which is integral with the capsule body, and the base wall covers the internal space at the first end of the side wall; - A flange, which is circumferentially arranged at the second end of the sidewall of the base body; - A cover, which covers the internal space at the second end of the sidewall opposite to the base wall and tightly seals the capsule; and - A filter element, which is positioned within the internal space of the capsule between the beverage ingredients and the cap; and - A support tray disposed within the internal space of the capsule, wherein the cap is removably attached to the flange for use of the capsule in a beverage preparation apparatus, and The carrier tray is disposed between the cap and the filter element, and the carrier tray includes a plurality of pre-formed outlet openings that are adapted to allow the prepared beverage to flow out of the internal space when the capsule is used in the beverage preparation apparatus.

2. The capsule for preparing a beverage according to claim 1, wherein the carrier disc is positioned inside the capsule at a distance between 0.1 mm and 2 mm from the cap.

3. The capsule for preparing a beverage according to claim 1 or 2, wherein the thickness of the carrier plate is between 0.05 mm and 1.5 mm.

4. The capsule for preparing a beverage according to claim 1 or 2, wherein the opening is circular or elliptical.

5. The capsule for preparing a beverage according to claim 1 or 2, wherein the diameter of the opening is between 0.2 mm and 3 mm.

6. The capsule for preparing a beverage according to claim 1 or 2, wherein the carrier disc comprises between 50 and 150 openings.

7. The capsule for preparing a beverage according to claim 1 or 2, wherein the openings are uniformly distributed on the surface of the carrier disc.

8. The capsule for preparing a beverage according to claim 1 or 2, wherein the carrier disk is made of aluminum.

9. The capsule for preparing a beverage according to claim 8, wherein the capsule body, the cap, and the carrier plate are all primarily made of aluminum.

10. The capsule for preparing a beverage according to claim 1 or 2, wherein the carrier disc is made of plastic or laminated plastic elements.

11. The capsule for preparing a beverage according to claim 1 or 2, wherein the filter element is disc-shaped and includes a nonwoven material layer adapted to prevent outflowing coffee from passing through and to reduce the formation of a crema layer.

12. The capsule for preparing a beverage according to claim 1 or 2, wherein the thickness of the filter element is between 0.005 mm and 0.3 mm, and the air permeability is 100 l / m according to ISO 9237. 2 / s to 5000l / m 2 Within the range of / s, and the weight is within 5g / m 2 Up to 600g / m 2 Within the range.

13. The capsule for preparing a beverage according to claim 1 or 2, wherein the filter element is mounted on the carrier plate.

14. The capsule for preparing a beverage according to claim 1 or 2, wherein the cap includes a free pull tab protruding from the cap.

15. The capsule for preparing a beverage according to claim 1 or 2, wherein the cap comprises at least an aluminum layer.

16. The capsule for preparing a beverage according to claim 15, wherein the cap further comprises a plastic layer and / or a heat-sealing layer.

17. The capsule for preparing a beverage according to claim 1 or 2, wherein the thickness of the cap is between 0.01 mm and 0.05 mm.

18. The capsule for preparing a beverage according to claim 1 or 2, wherein the beverage ingredients comprise at least 4 g of ground coffee.

19. A system for preparing a beverage, the system comprising replaceable capsules and a beverage preparation apparatus, the beverage preparation apparatus having a fluid dispensing device and a brewing chamber, the fluid dispensing device being capable of supplying a quantity of fluid to the capsules at a pressure between 0.1 bar and 20 bar, the brewing chamber comprising a first component for holding the capsules and a second component for closing the brewing chamber. The replaceable capsules mentioned above include: - A rigid capsule body having circumferential sidewalls extending around an internal space of the capsule, the internal space being at least partially filled with beverage ingredients suitable for preparing the beverage; - A rigid base wall covering the internal space at the first end of the circumferential sidewall, the base wall being integral with the capsule body, wherein the base wall is pierced by at least one blade of the fluid dispensing device of the beverage preparation apparatus during use for supplying the amount of fluid; - The replaceable capsule includes a cap that, before use, covers the interior space and tightly seals the capsule at a second end of the circumferential sidewall opposite the base wall, wherein the cap is removed from the capsule when the capsule is used in the beverage preparation apparatus; - A support tray disposed within the internal space of the capsule and including a plurality of pre-formed outlet openings adapted to allow the prepared beverage to flow out of the internal space when the capsule is used in the beverage preparation apparatus, wherein the second component of the brewing chamber includes an extraction plate for engaging the replaceable capsule at a second end of the sidewall while keeping the brewing chamber of the capsule closed, the extraction plate including a tear surface facing the support tray at the second end of the capsule during use, wherein the support tray of the capsule located in the closed brewing chamber during use is not altered by the tear surface of the extraction plate.

20. The system for preparing a beverage according to claim 19, wherein the extraction of the beverage components is carried out at a pressure below 8 bar.

21. A method of manufacturing capsules for preparing beverages as described in any one of claims 1 to 18, wherein the method comprises: - Provides a rigid capsule body having circumferential sidewalls and a rigid base wall, the circumferential sidewalls extending around an internal space to be at least partially filled with beverage ingredients suitable for preparing the beverage, the rigid base wall being integral with the capsule body and covering the internal space at a first end of the circumferential sidewalls; - The internal space is filled with a certain amount of the beverage ingredients through the opening opposite the base wall of the capsule body; - After filling the internal space with the beverage ingredients, insert the filter element into the internal space; - A support tray is inserted above the filter element in the internal space; optionally, the filter element and the support tray are inserted simultaneously in the internal space of the capsule. as well as - The opening filling side is closed by attaching a cap to a flange of the capsule body extending on the opening filling side. The cap is provided with a pull tab and is removed from the capsule before use. The carrier tray includes multiple outlet openings through which the prepared beverage can flow out of the capsule during use, the outlet openings being fluidly sealed by the cap extending on the filling side of the opening.

22. Use of the capsule according to any one of claims 1 to 18 for the preparation of a beverage.

23. Use of the capsule according to any one of claims 1 to 18 for preparing a beverage in the system according to any one of claims 19 or 20.

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