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    • 专利摘要:
    CAPSULE TO PREPARE A DRINK, SYSTEM TO PREPARE DRINK AND PROCESS TO PREPARE A DRINK. A capsule (1) for the preparation of a drink from an infusion device comprising a receptacle (50) for enclosing at least part of said capsule, said capsule comprising a side wall (2), an upper inlet wall (3) and a lower outlet wall (4) forming a hollow body (5) where the infusion product is contained, a flange-like edge (6) extending laterally from the aforementioned capsule, at least one sealing protuberance ( 10) located on an upper surface (6a) of said flange-like edge to provide a sealing coupling with said receptacle (50) when in use in said infusion device. Said sealing protuberance comprises a portion having a substantially triangular cross section, with two sides (11, 12) meeting in two straight lines extending from said upper surface (6a) of the flange-like edge (6) and one incident to the other at one point (B).
    公开号:BR112014007587B1
    申请号:R112014007587-5
    申请日:2012-09-28
    公开日:2020-12-29
    发明作者:Luca Doglioni Majer
    申请人:Tuttoespresso S.R.L.；
    IPC主号:
    专利说明:

    Technical field
    [0001] The present invention relates to a beverage capsule with a sealing member. More particularly, the invention relates to a single use, that is, a capsule, or disposable cartridge, for the preparation of drinks, such as coffee, from a dose of one or more products contained in the capsule, and for a beverage production system comprising a beverage production device (infusion device) for interacting with the capsule. Background of the invention
    [0002] Beverage capsules, especially disposable coffee capsules, have been known since the 1980s. Beverage capsules comprise a portion of a container that holds a dose of at least one extractable product, usually ground coffee, but also tea extracts from medicinal plants and similar products. The capsules also comprise a portion that interacts with an infusion device to prepare the required beverage. The typical infusion device comprises a boiler, a closing member, or receptacle, intended to cooperate with the capsule and a pump or similar means, so that the infusion liquid, preferably hot water under pressure, can be supplied to the capsule for the extraction of the drink from the dose of the product contained inside.
    [0003] In a known beverage preparation process, a capsule is inserted into the receptacle of the infusion device and is injected with the infusion liquid, usually hot water. The injected hot water passes through the capsule and extracts the drink from the ingredient contained therein. The drink leaves the capsule to reach a drink collector and then a glass or a reservoir.
    [0004] The receptacle surrounds at least part of the capsule and cooperates with it in a watertight seal coupling to allow hot water to be inserted into the capsule to extract the drink with no or limited leakage. The leakage of the infusion liquid can negatively affect the process of extracting the drink, thus, the desired flavor and quality of the drink are not achieved.
    [0005] A known type of capsule has a substantially tapered body and a flange-like edge portion extending from one of the two capsule bases. The infusion device comprises means for compressing the receptacle against the flange, in order to achieve the necessary seal during the infusion step. Recently, the capsules that have been supplied are provided with a flange that is located, correspondingly, with the side of the capsule where the beverage outlet is located, in use, the body of these capsules is housed in the infusion device receptacle and the side of the body opposite the location where the flange is located is the side where the water is injected. The drink leaves the capsule from the base where the flange is located. A seal between the flange and the receptacle is required to prevent water leaks from the receptacle.
    [0006] In known infusion devices, a tight sealing coupling between the capsule and the receptacle is generally obtained by exerting pressure on the flange-like rim, in other words, the receptacle which is cup-shaped, so surrounding the capsule, it is pressed against the flange-like edge of the capsule, along its perimeter.
    [0007] The problem of ensuring a tight sealing coupling between the capsule and the infusion device receptacle is particularly perceived with the use of the so-called sealed capsules, that is, those capsules that have a closed outlet for the drink, the The outlet is opened after the water fed into the capsule has reached sufficient pressure for opening or, at least, collapsing or completely breaking the thinner sections. Similarly, capsules with an open inlet and a partially closed or closed outlet are affected by the leakage of water, here, as before, a leakage of infusion water, can profoundly affect the quality and aroma of the prepared coffee.
    [0008] In any case, the problem is general for all types of capsules, that is, also for those capsules that are not sealed and have pre-formed openings at each entrance or exit or both. In the known infusion device, a tight sealing coupling between the capsule and the receptacle is generally obtained by exerting pressure on the flange-like edge of the capsule, in other words, the cup-shaped receptacle in order to envelop the capsule, is pressed against the part of the capsule in order to create a tight seal area or line. Preferably, the bottom edge of the receptacle, the so-called pressing part, is brought into contact with the flange-like edge of the capsule, that is, an edge extending from the lateral surface of the capsule, along its perimeter.
    [0009] EP 1654966 describes capsules provided with a resilient material, acting as a gasket or sealing member, which is added in correspondence of the flange-like edge, in order to join the pressure portion of the receptacle and to interact with the receptacle to provide a desired watertight seal coupling.
    [0010] WO 2009/115474 discloses an infusion device where the pressing portion of the receptacle, that is, the edge of the receptacle, which is brought into contact with the capsule, is provided with irregularities, cutouts, and / or cracks. According to the description of WO'474, slits are obtained at the edge of the receptacle in order to provide it with a means of directing the flow to control the leak if the device is operated without the insertion of a capsule. The problem with this brewing device is that water leaks from the receptacle into the cup where the coffee is being collected, which has a negative effect both visually and as far as taste is concerned, not to mention the possible disadvantage of quickly fill with excess water and drip into the container tray.
    [0011] In fact, a leakage of the infusion liquid from the outside through the capsule can reduce the pressure inside the capsule and therefore reduce the extraction of coffee aromas and, in addition, the water fed into the cup will not be pleasant for visualization and will dilute the flavor of the drink extracted from the capsule, with the consequent modification of the organoleptic characteristics and the quality of the drink produced.
    [0012] The known capsules, provided with a resilient material, acting as a sealing element, are not suitable to solve the above problem and other solutions have been proposed to ensure a satisfactory watertight sealing coupling between the capsule and a receptacle provided with irregularities . The sealing portion must ensure that the pressure portion of the receptacle is not trapped within the sealing portion at the end of the infusion step, when the used capsule has to be removed from the receptacle (as is often the case with sealing elements such as eraser).
    [0013] The capsules are already known to have one or more projecting elements, made of the same material as the capsule, and extending from its external surface, and in its particular shape of flange-type edge, in order to provide the sealing coupling with the receptacle.
    [0014] WO2010 / 084475, on behalf of the Ethical Coffee Company, describes several embodiments of a capsule having projecting elements on its outer surface, and in particular, on the upper surface of the flange-like edge.
    [0015] WO2010 / 137946, for Sara Lee, describes a capsule having at least one projection to provide a sealing coupling with the receptacle.
    [0016] The projecting elements above are produced in one piece with the capsule without the need to add other material on the capsule during its production, however, a desired watertight seal coupling of the projection element with the receptacle cannot be obtained in a reliable and constant manner.
    [0017] In view of the above, in order to prevent or reduce the leakage of the infusion liquid and to ensure a watertight sealing coupling of the capsule with the infusion device receptacle, there is no need to provide a sealing member or a projection intended to cooperate with the pressing edge of the receptacle. At the same time, the correct position of the capsule inside the receptacle must be such that it does not prevent extraction of the capsule from the receptacle at the end of the infusion process.
    [0018] It is an objective of the present invention to solve the above problems and to provide a capsule capable of ensuring a high precision in a watertight seal coupling with the receptacle, in order to provide an adaptation of the seal to different shapes and profiles of the portion of of the receptacle, without any problem of insertion or extraction of the capsule inside / from the receptacle.
    [0019] Another objective of the present invention is to provide a capsule that is easy to produce and where the sealing element is made integrally with the body of the capsule, without the need to add elastic sealing material on its outer surface to provide a sealing compensation for irregularities provided on the receptacle. Summary of the invention
    [0020] These and other objectives are achieved by means of the capsule of the present invention, which is a disposable capsule for the preparation of a drink from a dose of a product, according to claim 1. The capsule is insertable inside a beverage production device (also called an infusion device) comprising a receptacle for surrounding at least part of the capsule, which is provided by a side wall, an upper wall and a lower wall forming a hollow body where said product is contained. The capsule further comprises a flange-like edge extending laterally from the capsule and at least one sealing element in the form of a protrusion or projection from the flange-like edge, to provide a watertight seal coupling with the pressing portion of the receptacle of the beverage production device when in use, that is, when the receptacle is pressed against the flange-like edge of the capsule. Thus, the protruding portion is extended from the flange-like edge towards the receptacle.
    [0021] According to the invention, the sealing element comprises a portion having a substantially triangular cross section, with two sides forming an angle α, more generally, said two sides are found in two straight lines projecting from the flange-like edges of the capsule and are incident to each other at one point to define an α angle within the range of 45 ° - 120 °. In addition, the height H of the triangular portion, that is, the vertical distance from the point of incidence of said straight lines in which both sides of the triangular sealing protuberance are located, is greater than 0.5 mm, and preferably, within the range from 0.6 mm to 3.0 mm, more preferably 0.6 - 2.6. Preferably, the height is measured from the upper surface of the flange-like edge.
    [0022] According to another aspect of the present invention, the ratio between the base of the triangular portion of the sealing element, measured on the upper surface of the flange-like edge, and the width of the lower edge of the receptacle, is comprised within the range of 0.8 - 3.0, and is preferably greater than 1.0. The base of the triangular portion can be defined as the distance between the intersections of the two lateral lines of the triangle with the upper surface of the flange-like edge, where the upper surface is the surface facing the receptacle when the capsule is in use, and is intended to comprise the portion of the flange surface that is covered by and in common with the side wall of the capsule. In the present invention, "upper surface" means the plane of the surface of the flange facing the receptacle when the capsule is in use and extends to the inside of the side wall.
    [0023] A further object of the invention is a beverage preparation system according to claim 12. Another objective of the invention is a process for the preparation of a beverage according to claim 18.
    [0024] At least a part of the receptacle contacts at least a part of at least two said sides, to provide a watertight sealing coupling with the capsule, and due to the dimensions mentioned above, the sealing element of the present capsule suffers an elastic and / or plastic deformation when the receptacle is placed in contact with the capsule, in order to exert a compressive force that places in a watertight sealing coupling of the capsule with the receptacle.
    [0025] The two straight lines on the sides that meet are incident at a point in a substantially triangular shape of the extended sealing protuberance, that is, protruding from the upper surface of the flange-like edge.
    [0026] The middle of the triangular cross section, which the sealing protuberance of the capsule radially cuts through a cutting plane, is provided with at least one portion having a substantially triangular shape, having two sides found in two incident straight lines. This basic portion can protrude directly from the upper face of the flange-like edge or can be connected to said flange-like edge by a connecting body having another, for example, rectangular shape. Said two incident straight lines both intersect flange 6, they can intersect only the upper surface or the plane of the upper surface (as previously defined) or they both intersect the lower surface of the flange, or they can intersect both the upper and lower surfaces .
    [0027] Preferably, the capsule is substantially trunk-conical in shape with a central vertical geometric axis and the sealing protuberance having a triangular shape in a section view from a plane passing through the vertical central geometric axis, that is, a radial section view. In reference to the description below, a "sealing protuberance" will be made to indicate that the sealing element of the invention is protruding from the flange-like edge, the terms sealing element and sealing protuberance are therefore interchangeable.
    [0028] The elastic and / or plastic deformation of the sealing element, and in particular of the upper portion of the sealing protuberance in a substantially triangular shape, allows to obtain a desired watertight sealing coupling, by compensating for irregularities or cracks possibly present in the receptacle .
    [0029] In other words, the sealing protuberance in substantially triangular shape, is intended to be compressed, and elastically and / or plastically deformed, by pressing the lower edge of the receptacle, so that the irregularities of the receptacle can be compensated and leakage of the infusion liquid from outside the capsule can be reduced or prevented.
    [0030] The triangular shape of the sealing protuberance, having two sloping sides defining the claimed α angle, results in an easier compression of the sealing protuberance under the effect of the compression force (pressure) exerted by the pressing portion of the receptacle that is put in contact with this.
    [0031] At the same time, the substantially triangular shape and the α value of the selected angle, reduces the amount of force exerted by the user of the infusion device to seal the capsule inside the receptacle.
    [0032] The point of incidence of the straight lines on which the aforementioned two sides meet, that is, the apex of the triangle, forms a circumference having its center belonging to the vertical central geometric axis of the capsule, so that the sealing protuberance formed on the sides of the triangular seal protrusion is a circular protrusion extending around the side wall of the capsule and having a substantially triangular shape, in a radial sectional view.
    [0033] Preferably, the dimension of the sealing protuberance formed by the sides is the same for each radial section around the central geometric axis of the capsule, in other words, the sealing protuberance does not change its shape along the circumference of the capsule.
    [0034] The sides of the triangular seal protrusion can be connected to each other, in correspondence with the point of incidence of the straight lines in which the sides of the triangular seal protrusion meet, therefore, the formed protrusion protrusion has a triangular shape with a vertex angle having the same dimension as the angle of incidence of the straight lines where the sides meet. In addition, according to different possible embodiments, the sides can be connected to each other by means of a rounded line, and / or a straight line, and / or two or more inclined segments. In this respect, it should be noted that the term “substantially triangular” used to define the shape of the sealing protuberance is used here to indicate that the shape of the cross-section of the sealing protuberance can be considered triangular also in the case that the sides are connected by a rounded line or one or more straight lines or segments. A rounded line is usually present and necessary in view of the mold manufacturing requirements and part extraction requirements.
    [0035] According to an example of embodiment of the present invention, one of the two sides of the triangle protrudes from the side wall of the capsule, or protrudes from the point of contact of the side wall of the capsule with the upper surface of the aforementioned flange type edge. The fact that at least one side protrudes from the side wall of the capsule, results in a better centering of the capsule inside the receptacle.
    [0036] Thus, when the sealing protuberance comes into contact with the lower edge of the receptacle, that is, the compression portion, at least one side of the triangular sealing protuberance is in contact with the lower edge of the receptacle, thus avoiding any leakage of the infusion liquid.
    [0037] In the example of the embodiment in which one side of the triangular seal protrudes from the rear wall of the capsule, this arrangement provides a reinforcement of the seal protrusion, so that under the effect of the compressive force, the side wall it is not subjected to radial movement or deformation which can adversely affect a seal coupling between the seal protrusion and the receptacle.
    [0038] The angle formed between at least one projecting side from the side wall of the capsule and the side wall of the capsule is preferably an acute angle.
    [0039] As already mentioned above, the height of the point of incidence of the straight lines in which they meet the two sides of the triangular sealing protuberance, measured in a radial cross-sectional view of the upper surface of the flange type edge is greater than 0.5 mm, generally between 0.5 and 3.0 mm, and preferably in the range of 0.6 mm to 2.6 mm. According to preferred embodiments, the height is within the range of 0.6 to 2.0, and more preferably, 0.8 to 1.5.
    [0040] The angle α at the apex of the triangular portion, that is, the angle formed at the point of incidence of the straight lines in which the two sides of the triangular sealing protuberance are located, is preferably comprised in the range of 53 ° to 80 °, preferably, in the range of 55 ° to 65 ° and more preferably, the angle is 60 °, corresponding to a substantially equilateral triangular shape of the sealing protuberance.
    [0041] In the example of the embodiment shown, the height is 1 mm, and the sealing element is a protuberance having at least one portion that has a cross section corresponding to an equilateral triangle shape, that is, the angle formed by the lines straight incidents on which the sides meet is 60 °.
    [0042] As mentioned, the capsule of the present invention is to be used in a system where a receptacle houses the capsule during the required beverage production step, in this condition, the geometric axis of the capsule and the geometric axis of the receptacle are approximately coaxial . To compress the seal protrusion, the radial distance (i.e., the radius R) of the seal protrusion from the central geometric axis of the capsule is substantially equal to the radius of the receptacle from its central geometric axis. According to the present invention, the ratio between the base of the triangular portion of the sealing protuberance, measured on the edge surface as a flange, and the width of the lower edge of said receptacle, that is, the pressing portion, is in the range 0.8-3.0, preferably within the range of 1.0 - 2.3, and more preferably, within the range of 1.2 - 1.8.
    [0043] These values of the proportion between the dimension of the base of the triangular sealing protuberance and the width of the lower edge of the receptacle, allow to improve a tight sealing coupling between them during the beverage preparation process.
    [0044] In particular, the receptacle can be brought in substantially continuous contact with at least a portion of the two sides forming the triangular shape, that is, the lower end of the receptacle, even when it is provided with irregularities, can contact at least one on both sides, on the left side or the right side, or both, in relation to the apex of the triangular shape (the point of incidence of the straight lines where the sides meet), thus providing the deformation of the sealing protuberance and a coupling of watertight seal desired.
    [0045] Advantageously, the proportion results claimed in the centering of the capsule on the pressing portion of the receptacle being improved and automatically, substantially, performed by combining the shape, angle and proportion.
    [0046] Another aspect of the present invention provides a beverage preparation system of the type comprising a capsule of the type described herein, and a beverage production device comprising a receptacle for enclosing at least part of said capsule, where the receptacle comes into contact. contact with at least part of at least two said sides of the triangular seal protrusion of the capsule to provide a watertight seal coupling with the capsule. As mentioned above, the substantially triangular shape - in a cross-sectional view - of the sealing protuberance, results in the correct interaction with the infusion device receptacle, and in particular, with its smaller edge, pressing, even if the latter is provided with some irregularities due to a specific design or use.
    [0047] The capsule provided with the sealing element of the present invention can be produced in a known manner, that is, through injection molding or thermoforming. It is a further advantage of the invention that the claimed capsule and the sealing element are suitable to be thermoformed. Brief description of the drawings
    [0048] Other advantages and characteristics of the present invention will be more evident from the description below, provided with reference to the attached drawings, purely by way of non-limiting example, where:
    [0049] Figure 1 is a perspective view of the capsule according to the present invention;
    [0050] Figure 2 is a radial sectional view from a plane passing through the central geometric axis of the capsule according to the present invention;
    [0051] Figure 3 is an enlarged sectional view of the sealing protrusion of the capsule according to the present invention according to area K of figure 2;
    [0052] Figure 3a is an enlarged view of figure 3;
    [0053] Figure 4 is an enlarged sectional view of the outlet means of the capsule according to the present invention according to area J of figure 2;
    [0054] Figure 5 is a sectional view of the body of another capsule according to the invention, suitable for the thermoforming process; and
    [0055] Figure 6 is an enlarged view of the sealing element of the capsule of figure 5. Detailed Description
    [0056] Figures 1-4 show an embodiment of the capsule according to an embodiment of the present invention, for the preparation of a beverage, such as coffee, tea, hot and cold drinks, or any other edible liquids, from of a dose of an extractable product, either liquid or solid, confined inside the capsule. Preferably, the product dose comprises a powder product, such as coffee powder, which is prepared by means of an infusion liquid, preferably hot water under pressure, which is injected into the capsule to obtain the desired beverage.
    [0057] The capsule according to the invention is part of a system, and this is used inside a beverage preparation device (i.e., an infusion device) provided with a wrapping element, or receptacle 50 (figure 2 ), intended to house at least part of the capsule during the beverage preparation process. In other words, the capsule 1 is inserted, at least in part, into the receptacle 50 which is correspondingly shaped in relation to the capsule, in order to allow its insertion / extraction inside / from the receptacle, in the beginning and end, respectively, of the beverage preparation process. The receptacle 50 cooperates with a support member 51 that supports the capsule, from the other side of the flange-like edge 6, when the capsule is inserted into the receptacle. Support member 51 is generally a fixed member, while receptacle 50 is movable. In use, receptacle 50 is moved towards support 51 and the flange-like edge is compressed between receptacle 50 and support 51.
    [0058] The infusion device is also provided with means (not shown) for feeding the infusion liquid, preferably hot water under pressure, inside the capsule.
    [0059] During preparation of the beverage, the capsule 1 of the embodiment example is located between the receptacle 50 and the support member 51 of the beverage preparation device, which further comprises known means for controlling the relative movement between the receptacle 50 and the support member 51, so as to enclose the capsule between them. The receptacle 50 exerts pressure on at least part of the capsule, and preferably on its flange-like edge, in order to obtain a watertight sealing coupling.
    [0060] As shown in figures 1 - 3, 3a, the capsule 1 according to the invention, comprises a side wall 2, an upper wall 3 and a lower wall 4 forming a hollow body 5 where a dose of product is located.
    [0061] The capsule generally has a substantially cup shape, or a trunk-conical shape, with a central geometric axis (A), in other words, side wall 2 is not parallel to the central geometric axis (A) and the body hollow 5 is closed by a lower wall 4, which is substantially flat, and an upper wall 3. In the embodiment shown, the radius (R), see figure 2, of the body 5 of the capsule, measured between the central geometric axis A and the outer surface of side wall 4 is 15 mm.
    [0062] In the example of the embodiment shown in the figures, the lower wall 4 is a separate element, similar to a lid, which is connected to the lower portion of the body 5 of the capsule, in order to close the capsule and house the ingredient. The lower wall 4 has a projecting portion 4a (see figure 3) which is installed inside the capsule and is provided with restraint means, which are molded in the form of a circumferential edge 7, provided on the external surface of the projecting part 4a, which cooperates with the corresponding restraining means in the form of a circumferential edge 7a provided on the inner surface of the side wall 2 of the capsule, in order to fix the lower wall 4 to the capsule.
    Any other suitable means of restraining the lower wall 4 to the body 5 of the capsule can be used, and in other possible embodiments, the lower wall 4 can be produced in one piece with the capsule.
    [0064] Furthermore, the bottom wall can be produced in different materials in relation to the material of the capsule, for example, the bottom wall 4 can be a metal sheet or a porous or non-porous membrane, as already known in other capsules for the beverage production, this metal sheet or membrane will be perforated when using the capsule.
    [0065] The capsule 1, according to the present invention, is provided with a flange-like edge 6 extending laterally from the capsule, in particular, the flange-like edge extends circumferentially from the lower side wall 2 of the capsule , forming a perimeter protrusion of the capsule. Flange 6 has thickness T and wall, or cover, 4 has thickness Tl. Preferably, the flange-like edge 6 is substantially flat, that is, its upper surfaces 6a and lower 6b are flat. In other words, the flange-like edge 6 is situated on a plane that is perpendicular to the central geometric axis A of the capsule.
    [0066] In the embodiment shown, the upper wall 3 of the capsule is provided with central recess 3a to facilitate the injection of the infusion liquid into the capsule. In addition, on the inner and / or outer surface of the upper wall 3, a plurality of protruding elements 8 are provided, arranged substantially vertically, that is, along planes passing through the central geometric axis (A) of the capsule , in order to stiffen the upper portion of the capsule, thus avoiding unwanted deformation when the capsule is pierced by the piercing means of the infusion device arranged inside the receptacle 50 (not shown in the attached figures).
    [0067] The capsule is preferably produced in a plastic material approved for the use of edible products, for example, polypropylene, polyethylene, PLA (polylactic acid), and polystyrene (for example, high impact polystyrene sheet) which is also resistant the high temperature and pressure of the infusion liquid injected into it during the drink preparation process. The plastic material is selected according to the capsule production process, for example, injection molding and thermoforming.
    [0068] The capsule additionally provided, with means that will eventually allow the injection and the extraction of the infusion liquid. According to known embodiments, said means of entry and exit may comprise one or more opening on the surface of the capsule, self-piercing elements that are broken under mechanical force and / or the force of pressure acting on the capsule, or one or more holes that are produced by the infusion device's piercing means when the capsule is in use. In the shown embodiment, the capsule is provided with outlet means in the form of a plurality of self-piercing elements 9 on the lower wall 4.
    [0069] The self-piercing elements 9 comprise a plurality of protruding elements, at least in part, from the lower surface 4b of the bottom wall 4, which are breakable under the action of the mechanical force exerted by the infusion device and / or the force exerted by the water fed into the capsule. In particular, as shown in the enlarged view of figure 4, the elements 9 are defined by a reduced thickness portion 9a of the lower wall 4 which can be broken when the part of the element projecting from the lower surface 4b of the lower wall 4 , is pressed against the support member 51 of the infusion device. An articulation ensures that the elements 9 can swing and open without completely breaking away from the wall 4.
    [0070] This type of self-drilling element is described in detail in patent application WO2007 / 063411, in the name of the same applicant.
    [0071] Another type of outlet means has a corresponding plurality of elements, but the reduced thickness of the element's periphery is replaced by a groove where the wall 4b is not present, that is, with a pre-cut zone, the portion articulated being still present, additionally, in this embodiment the elements can protrude both externally and internally in relation to the wall 4.
    [0072] The aforementioned outlet elements can be opened under the action of the mechanical force resulting from the compression of the capsule by the receptacle 50 against the plate 51, or through the pressure created by the infusion liquid, or as a result of the action combined pressure of the infusion liquid with the mechanical force exerted by the receptacle.
    [0073] Other types of outlet means can be provided, that is, the extraction of the drink from the capsule can be obtained, for example, by piercing the capsule by means of suitable piercing means of the infusion device, in another embodiment, the outlet medium is a water-soluble membrane.
    [0074] The capsule entry means of the exemplary embodiment comprise one or more orifices provided by means of piercing means of the infusion device, in other words, when the capsule is housed inside the receptacle 50, the piercing means protruding in the inside the latter, produces one or more holes in the capsule surface to allow the injection of the infusion liquid.
    [0075] Also in this case, it should be noted that any suitable water entry means can be used without departing from the scope of protection of the present invention. As an example, a combination of a foil and piercing means attached to the capsule, as disclosed in PCT / IT2004 / 000503, could be used. The capsule 1 further comprises at least one sealing protuberance 10 to ensure a watertight sealing coupling with at least a portion of the receptacle 50 of the infusion device.
    [0076] In the example of the embodiment shown, the sealing protuberance 10 is provided on the flange-like edge 6 of the capsule, that is, the portion of the capsule designed to be placed in contact with the receptacle 50, and in particular, with the lower edge 50a of the receptacle, that is, the pressing portion of the receptacle, to provide a sealing coupling.
    [0077] As shown in the sectional view of figures 2, 3 and 3a, the receptacle 50 of the infusion device is substantially cup-shaped to allow insertion / extraction of the capsule into / from it, and is provided with an edge substantially circular bottom 50a intended to cooperate as a pressing portion with the capsule, and in particular, with the sealing protuberance 10 arranged on the flange-like edge 6 to provide a watertight sealing area.
    [0078] At least one sealing protuberance 10 comprises a portion having a substantially triangular cross section, with two sides 11, 12 overlapping, that is, defined by, two straight lines 13 and 14 (shown in figures 3 and 3a as dashed straight lines on which sides 11 and 12 meet) that are incident to each other at point B.
    [0079] More in detail, in a cross-sectional view, the sealing protrusion of the capsule is formed by two sides 11, 12 that are in two straight lines that are incident at point B, forming a sealing protuberance of substantially shape triangular extending from the upper surface 6a of the flange-like edge 6. In the embodiment shown, the cross-sectional view is taken from a radial plane passing through the central geometric axis A, see figures 2, 3 and 3a. As shown in the figures, the straight lines defining sides 11 and 12 of the sealing triangle, intersect flange 6, that is, they intersect the upper surface 6a of flange 6. As previously mentioned, the expression “upper surface” of the edge of the flange type 6 is intended to define the plane of the flange surface (facing the receptacle when the capsule is in use) that extends to the inner side 20 of the side wall of the capsule body and to the outer end 21 of the flange. Preferably, the lines defining sides 11 and 12 are also intersected on the lower surface 6b of flange 6 (figure 3a), that is, the triangle is located on the flange and is shaped so that the lines defining sides 11 and 12 of the triangle, at least intersect the plane of the upper surface 6a and, preferably, also the lower surface 6b of the flange 6.
    [0080] The radial distance (that is, the radius R), of the sealing protuberance from the central geometric axis of the capsule is substantially equal to the radius of the receptacle from its central geometric axis, in order to provide compression of the receptacle 50 on the triangular sealing protuberance 10 when the capsule is in use. The angle of incidence α formed by lines 13 and 14 in which sides 11 and 12 meet, is the angle of the upper vertex of the triangle defined by sides 11 and 12 and surface 6b, angle α is within the range of 45 ° - 120 °. It should be noted that the angle α corresponds substantially to the angle of the upper vertex of the substantially triangular-shaped protuberance formed by the two sides 11, 12.
    [0081] Preferably, the angle α is in the range of 53 ° to 80 °, more preferably, within 55 ° to 65 °, and most preferably the angle is 60 °. In the example of the embodiment shown, the angle α is 60 °, thus forming a sealing protuberance 10 having a substantially equilateral triangle cross section.
    [0082] In other words, the two sides 11, 12 form a sealing protuberance, extending from the upper surface 6a of the flange-like edge 6, having a substantially triangular shape seen in a cross-sectional view. As already mentioned above, the cross section is taken from a plane passing through the central geometric axis A of the capsule, and is a radial cross-sectional view.
    [0083] In fact, the incidence point B of lines 13 and 14 forms a circumference having its center belonging to said central geometric axis A of the capsule, so that the sealing protuberance formed by the sides 11, 12 is a circular protuberance extending around the side wall of the capsule.
    [0084] Preferably, the dimension of the sealing protuberance formed by the sides 11, 12 is the same for each radial section around the central geometric axis A of the capsule, in other words, the sealing protuberance 10 does not change its shape along the circumference of the capsule.
    [0085] The triangular portion of the sealing protuberance 10 has a base 24 which is located on the upper surface 6b of the flange-like edge 6 (see figure 3a) and is defined by two points of intersection of lines 13 and 14 with the surface 6b, the lower edge 51 of the receptacle 50, that is, the pressing edge of the receptacle 50 has a width W which is the width of the portion of the receptacle that contacts the flange of the capsule. According to the present invention, the base / width ratio between the base 24, as measured on said upper surface 6a, and the width W of the lower end 51 of the receptacle 50, is comprised in the range of 0.8 - 3.0 , and is preferably greater than 1.0. More preferably, the base / width ratio is within the range of 1.0 - 2.3, and more preferably, in the range of 1.2 - 1.8.
    [0086] The combination of the relevant characteristics for height, angle α and shape (as defined by the sides of the triangle intersecting the flange 6) results in the previously discussed self-adjustment of the sealing element in relation to the lower edge (or pressing surface) 50a of the receptacle 50, the lower edge will always be in contact with the triangular seal 10 in a position that can be the inner side or the outer side or the upper part of the triangle. Usually, the contact is in all of the aforementioned positions, in different parts of the triangular sealing protuberance 10: the non-perfect coaxiality of the capsule's geometric axis with the geometric axis of the receptacle 50 is compensated by the claimed sealing characteristics that allow the lower flange compress the triangular protuberance for a sealing effect.
    [0087] The triangular seal protrusion is preferably produced in one piece with capsule 1, and is preferably made of the same material as the capsule. In additional possible embodiments the sides 11, 12, of the substantially triangular-shaped sealing protuberance 10, may be made of a different material, in relation to the material of the co-molded capsule, or as a separate part, subsequently attached to the capsule.
    [0088] In addition, the material of the sealing protuberance may be elastically and / or plastically deformable when it contacts the lower edge 50a of the receptacle 50, when the latter is pressed against the capsule to exert a pressure that provides the fitting of seal.
    [0089] Additionally, it should be noted that the claimed protuberance makes it possible to have a good seal using only one protuberance on the upper surface 6a of flange 6, unlike the known devices using several protuberances.
    [0090] It is also within the scope of the present invention, an embodiment in which the triangular protuberance is located on the lower face of the flange 6, opposite the surface 6a, which is the face of the flange that will contact the support 51, when in use. In the embodiment shown in figures 3 and 3a, this part is a lower wall portion 4 referred to as 15, that is, the lower wall 4 has a portion 15 which is contacted and secured with the flange portion extending from the side wall 2 to provide a double layer flange, the lower protrusion 17 is shown in dashed lines in figure 3, extending from the portion 15 of the lower wall 4. Thus, in an additional possible embodiment, the capsule has two triangular protuberances 10 and 17, extending from opposite sides of the capsule rim, the two protuberances may have different shapes and heights.
    [0091] It should be understood that the term "substantially triangular cross section," means that the triangular shape having two sides 11, 12 may not be a complete triangular shape, as shown in the sectional view of figures 2 and 3.
    [0092] In reality, as shown in the figures, and in particular in the enlarged sectional view of figure 3a, one side 11, 12 protrudes from the side wall 2 of the capsule, and the other side protrudes from the upper surface 6a of the capsule edge-type flange 6.
    [0093] In the embodiment shown in figures 2, 3 and 3a, the left side 11 projects from the side wall 2 of the capsule, and from the right side 12 projects from the flange-type edge 6, the angle α of incidence lines 13 and 14, and sides 11 and 12, the triangular sealing protuberance is 60 °.
    [0094] The two sides 11, 12 form, substantially, with the surface 6a an equilateral triangle, which is not completely visible due to the fact that the left side 11 projects from the side wall 2 of the capsule. In addition, it should be noted that in figure 2 the sides 11, 12 are connected to each other by means of a rounded line (r).
    [0095] In other possible embodiments, side 11 extends from the free portion 16 of the upper surface 6a, for example, from the point of contact of the side wall 2 of the capsule, with the upper surface 6a or further away from the wall 2, as in figures 5 and 6, where a complete triangular shape of the sealing protuberance formed by the sides 11, 12 can be visible in a radial sectional view. The embodiment shown in figures 5 and 6 is a preferred capsule for the thermoforming process. The same characteristics were identified with the same reference numbers as in figures 1-4. The embodiment of figure 5 is provided with reinforcement elements 22 in the entrance wall 3, the reinforcement elements 22 are in the form of recesses obtained in both side wall 2 and entrance wall 3. The recesses result in a plurality of “walls of connection ”23 which are inclined with respect to both wall 2 and wall 3, these types of reinforcement elements for the capsules are described in more detail in co-pending application EP 12005214.7 filed by the applicant on 07/16/2012. The angle α for the embodiment of figures 5 and 6 is 45 °.
    [0096] Figure 5 shows a capsule that has a constant thickness of the capsule body, the scope of the application also includes capsule bodies where the thickness of the walls is not constant, especially if the capsule is obtained through thermoforming.
    [0097] The sides 11, 12 can be connected to each other, in correspondence with the point of incidence B of the straight lines in which the sides 11, 12 meet, thus, the formed protrusion of the sealing has a triangular shape with an angle vertex having the same dimension and shape as the angle α of incidence of the straight lines where the sides 11, 12 meet.
    [0098] In additional possible embodiments, as illustrated in the attached figures, sides 11, 12 are connected to each other by a rounded line having a radius r of 0.1, thus the triangular shape is provided with a rounded vertex in its upper portion.
    [0099] In other possible embodiments, not shown in the figures, sides 11, 12 can be connected to each other by means of a straight line, and / or by two or more inclined segments. In this case, the upper portion of the formed protuberance has a truncated apex. It should be understood that in the present description the term “substantially triangular cross section,” of the sealing protuberance is used to include embodiments in which the upper portions of the sides are connected by means of one or more straight lines or segments, forming, for example, example, a trapezoidal shape, in case the two sides 11 and 12 are connected by a straight line parallel to the upper surface 6a of the flange-like edge 6.
    [0100] In a sectional view, see figures 2, 3 and 3a, the height H of the incidence point B of the straight lines on which the two sides 11, 12 meet, measured from the upper surface 6a of the type edge flange 6, is greater than 0.5 mm, and preferably, within the range of 0.6 mm to 2.6 mm. More preferably, height H is within the range of 0.6 to 2.0, and preferably, 0.8 to 1.5.
    [0101] In the embodiment shown in the attached figures the height H is 1 mm.
    [0102] In addition, the point of incidence B of the straight lines in which the two sides 11, 12 meet in a radial sectional view with respect to said central geometric axis A, is within the projection of the width W of the edge bottom 50a of said receptacle 50, see figures 3 and 3a.
    [0103] It should be noted that in the capsule shown in the figures, the height H of the incidence point B of the straight lines 13 and 14, on which the sides 11, 12 meet, corresponds to the bisector line (bisector) of the angle α. According to other possible embodiments, not shown in the figures, the height H cuts the angle α at two different angles, that is, the two sides 11, 12 are inclined differently in relation to the upper surface 6a of the flange-type edge 6 .
    [0104] The present invention further relates to a beverage preparation system of the type comprising a capsule 1 of the type described above, and a beverage production device comprising a receptacle 50 for enclosing at least a part of said capsule, where said receptacle 50 contacts at least part of said at least two sides 11, 12 to provide a watertight seal coupling with the capsule.
    [0105] In operation, the capsule 1 is inserted into the receptacle 50, which is substantially cup-shaped, and is provided with a lower flange 50a acting as the pressing portion of the receptacle and intended to be placed in contact with the flange-like edge 6 of the capsule, and in particular, with the sealing protuberance 10.
    [0106] The receptacle 50 cooperates with a lower support member 51, and the infusion device is provided with known means that allow displacement of the receptacle in order to wrap the capsule 1 between the receptacle 50 and the lower support member 51 .
    [0107] The lower end 50a of the receptacle is therefore pressed against the flange-like edge 6 and at least part of the sides 11, 12 comes into contact with it, in order to provide a desired watertight seal coupling.
    [0108] The seal protuberance 10, formed by the sides 11, 12 is partially deformed, elastically and / or plastically, in order to guarantee a desired watertight seal coupling, preventing any leakage of the infusion liquid that is injected into the capsule.
    [0109] It should be noted that the substantially triangular shape of the sealing protuberance facilitates its deformation under the pressure exerted by the receptacle, without the need for a high force applied by the user of the infusion device to move the receptacle.
    [0110] Furthermore, as already mentioned above, the fact that at least one side protrudes from the rear wall of the capsule, allows to improve the centralization of the capsule inside the receptacle. The centralization is, in any case, obtained according to the relationship described above, between the base of the protuberance and the width of the lower border 50a.
    [0111] Thus, when the sealing protuberance contacts the lower edge 50a of the receptacle 50, at least part of at least one of the sides 11, 12, respectively, on the right side of the vertex B and on the left side of the vertex B , is in contact with the bottom edge of the receptacle, thus preventing any leakage of the infusion liquid. In fact, it has been found that contact can occur, in part, on side 11 and, on the remainder, on side 12, ensuring in any case a substantially complete contact of the lower edge 50a with the sealing protuberance 10. In view of the above, it is clear that the shape of the capsule sealing protuberance, according to the present invention, is able to compensate for any irregularities provided in the receptacle, and, in particular, in correspondence with its lower edge which is placed in contact with the sealing bulge.
    [0112] The substantially triangular compression of the sealing protuberance allows effective sealing of the irregularities of the lower edge of the receptacle, allowing perfect interaction between them in order to obtain a desired watertight sealing coupling.
    权利要求:
    Claims (19)
    [0001]
    1. Capsule for preparing a drink, from an infusion device, comprising a receptacle (50) for enclosing at least part of said capsule, said capsule comprising a side wall (2), a top entrance wall (3) and a lower outlet wall (4), forming a hollow body (5) where a product is contained, a flange-like edge (6) extending laterally from the aforementioned capsule, at least one protuberance of seal (10) located on an upper surface (6a) of said flange-like edge to provide a seal coupling with said receptacle (50) when in use in said infusion device, said capsule body is substantially tapered and having a central geometric axis (A), said sealing protuberance comprising a portion having a triangular cross section with two sides (11, 12) meeting in two straight lines extending from and intersecting said surface upper flange (6a) of the flange-like edge (6), one being incident to another at a point (B) to define an angle (α); the aforementioned point of incidence (B) having a height (H), and in a radial section view, the aforementioned height (H) is the vertical distance from said incidence point (B) measured from the upper surface (6a ) of the aforementioned flange-type edge (6); one of which referred to two sides (11, 12) protrudes from the point of contact of the side wall (2) of the capsule with the upper surface (6a) of said flange-like edge (6), with the incidence point being (B), in a radial sectional view in relation to the central vertical geometric axis (A) of the capsule, forms a circumference with its center belonging to the said central geometric axis (A), the said capsule being characterized by the fact that: - said angle (α) is in the range of 45 ° - 120 °; - said height (H) is within the range of 0.6 mm to 2.6 mm; - the aforementioned height (H) corresponds to the bisector line of that angle (α).
    [0002]
    2. Capsule, according to claim 1, characterized by the fact that said angle (α) is within the range of 53 ° to 80 °.
    [0003]
    3. Capsule, according to claim 2, characterized by the fact that said angle (α) is within the range of 55 ° to 65 °.
    [0004]
    4. Capsule, according to claim 3, characterized by the fact that said angle (α) is 60 °.
    [0005]
    5. Capsule according to any one of claims 1 to 4, characterized in that said height (H) is within the range of 0.6 to 2.0 mm.
    [0006]
    6. Capsule, according to claim 5, characterized by the fact that said height (H) is within the range of 0.8 to 1.5 mm.
    [0007]
    7. Capsule according to any one of claims 1 to 6, characterized in that said triangle is an equilateral triangle.
    [0008]
    8. Capsule according to any one of claims 1 to 7, characterized in that at least the two said sides (11, 12) are connected to each other by means of a rounded line, and / or a straight line, and / or two or more inclined segments.
    [0009]
    9. Capsule according to any one of claims 1 to 8, characterized in that the lower portion of the side wall (2) of the capsule is vertical.
    [0010]
    10. Capsule according to any one of claims 1 to 9, characterized in that said sealing protuberance extends from both the upper side (6a) and a lower side (6b) of said flange-like edge.
    [0011]
    11. Beverage preparation system, characterized by the fact that it comprises a capsule (1), as defined in any one of claims 1 to 10, and an infusion device including a receptacle (50) to surround at least part of said capsule, said receptacle (50) having a lower edge (50a) which comes in contact with said triangular portion of said sealing protuberance (10), to provide a watertight sealing coupling with the capsule (1) during said preparation of the drink.
    [0012]
    System for preparing drinks according to claim 11, characterized in that the proportion between the base (24) of said triangular portion of the sealing protuberance (10) measured on said upper surface (6a) of the flange-like edge (6) and the width (W) of the lower end (50a) of said receptacle (50) is in the range of 0.8 - 3.0.
    [0013]
    13. Beverage preparation system according to claim 12, characterized in that the width (W) of the lower end (50a) of said receptacle (50) is in the range of 1.0 - 2.3.
    [0014]
    14. Beverage preparation system according to claim 13, characterized in that the width (W) of the lower end (50a) of said receptacle (50) is in the range of 1.2 - 1.8.
    [0015]
    15. Beverage preparation system according to any one of claims 11 to 14, characterized in that said point of incidence (B) of said straight lines, in which at least the two mentioned sides (11, 12) meet meet, are within the projection of the width (W) of the lower edge (50a) of said receptacle (50), which is intended to come into contact with at least part of the two mentioned sides (11, 12) to provide a watertight coupling with the capsule (1).
    [0016]
    16. Beverage preparation system according to any of claims 11 to 15, characterized in that, when in use, said lower edge (50a) compresses part of said inner side (11) and part of said outer side (12) of the aforementioned triangular fence protuberance (10).
    [0017]
    17. Beverage preparation system according to any of claims 11 to 16, characterized in that said lower edge (50a) is provided with notches or slits.
    [0018]
    18. Beverage preparation system according to either of claims 11 or 17, characterized in that said lower edge (50a) and said sealing protuberance are coaxial circumferences.
    [0019]
    19. Process for preparing a drink, in a system for preparing drinks, as defined in any of claims 11 to 18, characterized in that said lower edge of said receptacle (50) is compressed in contact with said part of the said internal side (11) and part of said external side (12) triangular sealing protuberance (10), for watertight sealing coupling with the capsule (1) mentioned drink preparation.
    类似技术:
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    同族专利:
    公开号 | 公开日
    EP2760761B1|2019-06-26|
    AU2017204363B2|2019-07-04|
    CN104024129B|2017-05-10|
    HK1201501A1|2015-09-04|
    KR20140092818A|2014-07-24|
    JP2018038834A|2018-03-15|
    RU2014116895A|2015-11-10|
    WO2013046014A1|2013-04-04|
    AU2017204363A1|2017-07-20|
    JP6761401B2|2020-09-23|
    RU2639077C2|2017-12-19|
    EP2760761A1|2014-08-06|
    CN104024129A|2014-09-03|
    JP2014527891A|2014-10-23|
    AU2012314020A1|2014-04-17|
    US20140234494A1|2014-08-21|
    BR112014007587A2|2017-04-18|
    ES2747814T3|2020-03-11|
    KR102099484B1|2020-04-10|
    CA2850009A1|2013-04-04|
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    法律状态:
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-09-10| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-06-09| B07A| Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]|
    2020-10-06| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-29| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 28/09/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    ITMI2011A001742|2011-09-28|
    ITMI20111742|2011-09-28|
    IBPCT/IB2011/003021|2011-12-13|
    IB2011003021|2011-12-13|
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