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  • 专利说明
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    • 专利摘要:
    CAPSULE TO PREPARE A DRINK FROM AN INFUSION DEVICE AND SYSTEM TO PREPARE A DRINK A capsule for the preparation of a drink comprises a side wall, an entrance wall and a lower wall forming a hollow body having a substantially central geometric axis, the entrance wall extends from a peripheral end of the side wall towards said central geometric axis and a plurality of recessed portions extends on both side and entrance walls along the edge between said walls, each portion connecting the side wall and the entry wall together.
    公开号:BR112014012370B1
    申请号:R112014012370-5
    申请日:2012-11-20
    公开日:2020-11-03
    发明作者:Luca Doglioni Majer
    申请人:Tuttoespresso S.R.L；
    IPC主号:
    专利说明:

    Technical field
    [001] The present invention relates to a capsule, or cartridge, for the preparation of beverages, such as coffee, from a dose of one or more products contained within the capsule, by means of a beverage production device. (infusion device) and to the system formed by said capsule and said infusion device. More particularly, the invention relates to a disposable capsule which, in use, is opened for the injection of the infusion liquid by means of perforation of the infusion device. Background of the invention
    [002] These types of capsules have been known since the 1970s. Capsules for drinks comprise a portion of a container that houses a dose of at least one extractable product, usually ground coffee, but also herbal extract tea 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 liquid or solvent for infusion, usually, but not exclusively, hot water under pressure , can be fed to the capsule for the extraction of the drink from the dose of product contained therein.
    [003] In a known beverage preparation process, a capsule is placed inside the infusion device receptacle and is fed with the infusion solvent, such as hot water. The injected solvent passes through the capsule and thus creates by dissolving soluble solids contained in the food product, or solubilizing the powder contained in the capsule, or otherwise, diluting the concentrated liquid contained therein. In other words, the injection of the solvent into the capsule allows the constitution of the drink from the ingredient contained therein. The beverage thus formed leaves the capsule to reach a drink collector or spout and then a cup or container.
    [004] The injection of the infusion liquid can be obtained by providing a surface of the capsule where holes are present, usually these holes being placed on the water inlet surface of the capsule. This solution, however, results in coffee powder leaking out of the capsule during handling or transport and, in general, a faster oxidation of the foodstuff. For the above reasons, it is preferred to use closed or sealed capsules, in which the inlet medium, that is, at least one opening for the infusion liquid to penetrate the capsules, is created on an inlet surface of the capsule, preferably its wall when the capsule is used. For this purpose, the infusion device is usually provided on its water inlet wall, with drilling means, usually in the form of one or more protruding parts, such as needles or blades, which are movable in relation to the capsule (or vice versa) to pierce the entrance surface or entrance wall of the capsule, generally, the piercing means protrude, at least in part, through the entrance surface. The openings or holes formed by the piercing means allow the infusion liquid to pass inside the capsule.
    [005] Feeding hot infusion water through the perforation of the capsule inlet wall is a method well known in the art and is described in several prior art documents.
    [006] US 2778739 discloses a beverage infusion package having a body and an upper lid that is perforated by protruding elements of the infusion device. A similar concept is disclosed in US 2968560 and US 3607297.
    [007] Recently, some problems were found by the use of the capsule made of plastic polymers, in contrast to the capsule made of a more rigid and thinner material, such as aluminum. Capsules made of plastic can be difficult to pierce, so that complete perforation of the capsule wall is not achieved, so no solvent, for example, hot water, can be injected into the capsule, or only partial perforation is achieved , thus providing an irregular and unsatisfactory distribution of the solvent inside the capsule and an equally irregular quality of the drink in the cup.
    [008] Therefore, there is a need to obtain a good perforation of the capsules, especially capsules made of materials softer than aluminum, such as conventional thermoplastic materials, for example, PE or PP polymers, or degradable plastics or called biomaterials, for example, PLA.
    [009] To facilitate piercing, by means of piercing the infusion device, plastic capsules have been provided with reinforcing elements, for example, as disclosed in international patent application WO 2011/027259.
    [010] WO2011 / 027259 discloses a capsule having reinforcement means provided on its side wall, in the form of a plurality of circular ribs, or an annular projecting member, and the like.
    [011] These solutions require, with everything else being equal, a greater mass of thermoplastic material during the production process, resulting in a heavier, less environmentally friendly capsule. Furthermore, in any case, the reinforcement members provided in the outer wall of the capsule can be provided only partially, effective for reinforcing the entrance wall in the areas where it has to be pierced.
    [012] EP2287090 discloses a capsule having an entrance wall provided with a thinner section than the rest of the wall, in the position where the piercing elements of the infusion device will affect, in order to facilitate the penetration of the device's blades water injection. Such reduction of the walls allows, however, the deformation of the walls. For this reason, reinforcement ribs are also provided, extending both on the entrance wall and on the side wall of the capsule, thus preventing unwanted deformation of the capsule when the piercing means of the infusion device exert a piercing force. in the entry wall of the capsule. However, the reinforcement members that are arranged in the entrance wall of the capsule, must be dimensioned, positioned and oriented in a precise way so as not to be affected by the capsule's piercing means. In fact, if these ribs are contacted by the infusion device's perforating blades, they can provide very difficult, if not impossible, perforation, due to the additional material that causes an increase in the thickness of the capsule inlet wall in correspondence with the ribs.
    [013] WO 2010/041179 shows a sealed capsule having an entrance wall and a side wall (see figure 2) where a recessed portion is provided in the entrance wall; the lowered portion extends only over the entrance wall and ends at the beginning of the side wall (see figures 5 and 6). This recessed portion of the wall is intended to be a reinforcing element that cooperates with a corresponding radial groove in the entrance wall. The reinforcement effect of the lowered portion is almost nonexistent.
    [014] W02012 / 080501, which was deposited before and published after the priority date of this application, describes a capsule where the entrance wall, or base - to use the terminology adopted in the document - is provided with a reinforcement zone circumferentially arranged on the base as a plurality of recesses; all recesses are located and contained within the base. The recesses have two walls forming an angle of about 90 degrees with each other, where one of the walls is vertical, that is, it is parallel to the vertical geometric axis of rotation of the capsule, and the other is substantially horizontal. However, the reinforcing effect of this structure is very limited, in practice, it does not exist if the capsule is thermoformed, so that the number of unopened and deformed capsules is very high, and the capsule opening is not conducted in a way safe.
    [015] It is an objective of the present invention to solve the above problems and to provide a capsule that can be pierced in a simple and effective way, and to limit the number of reinforcement members in the upper entrance wall of the capsule.
    [016] Another objective of the present invention is to provide an adequate reinforcement to the area where the entrance means need to penetrate the capsule wall, while minimizing the increase in the capsule material necessary to achieve this objective.
    [017] Another objective of the present invention is to provide a capsule that can be produced in a simple way, without the need to provide a reduced thickness portion on the capsule inlet wall, depending on the position of the infusion device's piercing means . Summary of the invention
    [018] These and other objectives are achieved by means of the capsule of the present invention, which is a capsule for the preparation of a drink from a dose of a product, according to claim 1. An additional objective of the invention is a system for preparing drinks according to claim 19. Preferred embodiments are the subject of the dependent claims.
    [019] The present capsule can be made of plastic, bio-plastics, the so-called "green" plastics (which are plastics derived from renewable sources).
    [020] The capsule can be produced by injection molding or thermoforming. The capsule can be provided with a layer that acts as a barrier to oxygen and gas penetration.
    [021] A suitable known barrier material is, for example, EVOH, which can, for example, be present as a multilayer structure with polypropylene, such as PP-EVOH-PP, or with polystyrene and polyethylene, such as PS - EVOH-PE; these materials are cheaper and better recyclable than aluminum. The multilayer structure can be a laminate for use in thermoforming; alternatively, the multilayer structure is obtained by co-injection molding the capsule body; co-injection of coffee capsules is a technique frequently known to the person skilled in the art, and is not an object of the present invention. Such a technique is commercially available.
    [022] The barrier can also be provided externally as a coating. Suitable coatings are those available from, for example, Nanolok ™ PT ADV-7 and PVD or PECVD coatings. Coatings can be applied by spraying or dipping, suitable coatings, especially nano coatings, can be obtained from a composition including kaolin clay or nano silicate particles and polymers, optionally, as an aqueous composition. Such compositions are, for example, dispersion of concentrated nano composite which includes a silicate filler and a matrix polymer dispersed in an aqueous medium, such as, for example, those disclosed in WO 2009/114071, WO 2006/115729, WO 2008/147380, WO 2009/114072 and US 8309230.
    [023] Another type of barrier can be obtained by adding suitable nano composites to the plastic material, as disclosed, for example, in WO 2007/106671.
    [024] The capsule comprises a side wall, an entrance wall and a lower wall forming a hollow body where the foodstuff is contained and having a substantially central geometric axis, the entrance wall extends from a peripheral end of the wall lateral towards said central geometric axis. The capsule is characterized in that it comprises at least a recessed portion extending over and connecting said side wall and said entrance wall. In more detail, the recessed portion is provided corresponding with the peripheral end of the side wall from which the entrance wall extends, that is, through the edge between the entrance and side wall; thus, the recessed portion extends to both the side wall and the entrance wall of the capsule. This means that, in at least one position, preferably in a plurality of positions, a portion of the side wall and a portion of the entrance wall are absent, and that in these positions, the walls are replaced by at least one wall of connection, which is defining a "lowered portion" of the capsule body; the term "recessed" is used with reference to the level of the walls of the rest of the capsule body. In the drawings, the side wall extends from the flange of the edge line 2c; the side wall may have portions with different taper or different angles in relation to the vertical geometric axis of the capsule, as shown in figures 1-9, for example, with references 2b and 2a. Each recessed portion comprises a surface, preferably "oblique", forming an additional wall which is inclined with respect to both the side and entrance walls, and which is connecting said walls; as shown in the drawings, this connecting surface is preferably flat, and connects an area of the side wall that is spaced from the edge or margin between the side and entrance walls with an area of the entrance wall that is spaced from the edge and between the side and entrance walls. Preferably, on the entrance wall, the recessed portions, or recesses, end at a distance from the central geometric axis, so that they leave an area of the entrance wall where drilling, through the blades of the infusion device, can be conducted . On the entry wall, the recessed portions can continue below the flange, however, since there is a protrusion for each recessed portion, or recess, inside the body of the capsule, the greater the volume of the recessed portions, the smaller the volume of the capsule body available for storing coffee or other products, preferably the recessed portions on the side wall do not extend below half the length of the wall, more preferably, the recessed portions below the end, are located within the third the length of the side wall, and even more preferably within the upper 25% portion of said length.
    [025] As also mentioned below and as shown in the drawings, the angle β between the entrance wall and the side wall is 90 ° or greater, preferably greater than 90 °, to provide additional rigidity to the structure, a preferred range for angle β it is 100 ° to 130 °.
    [026] In other words, the recessed portions of the capsule form a modification of both the side wall and the entry wall of the capsule providing a corresponding protuberance within the capsule.
    [027] It should be understood that the recessed portions comprise at least one surface connecting the side wall to the entrance wall of the capsule, in order to provide a kind of "corrugation", with the continuity of the surface of the capsule. According to the different possible embodiments, the recessed portion can be formed by a continuous surface or by two or more surfaces, which can be oriented symmetrically or asymmetrically towards each other in a different way to obtain the desired shape of the portion demoted.
    [028] In design, the lowered portion can be seen as the "removal" of a portion of the capsule volume from the junction, that is, the edge, between the entrance and side walls, thus the walls are modified and they "sink" below their original level to rise back to their original level and shape. Examples of the shapes of the removed volume are prisms or portions of prisms, preferably a prism selected from triangular, parallelepiped, cylindrical and hexagonal-based prisms, or other prisms having a base formed by a regular or irregular polygon.
    [029] Advantageously, the presence of one or more recessed portions in correspondence with the peripheral end of the side and entrance walls, that is, the connecting line between the side wall and the entrance wall, allows to obtain a rigidity of this area, and in general of both the entrance surface (entrance wall) and lateral surfaces of the capsule, thus avoiding unwanted deformation when, in use, a piercing force is exerted on the entrance wall of the capsule by means the infusion device.
    [030] On the contrary, the known capsules, for example, of the type described in the patent application WO 2012/080501 mentioned above, provided with a plurality of recesses extending only over the entrance (base) of the capsule wall, inevitably leading to the unwanted deformation of the upper portion of the side wall of the capsule below the peripheral edge from which the inlet wall extends when the capsule is contacted by the infusion device's piercing means. The capsule, according to the invention, provides an effective and safe reinforcement of both the entrance wall and the side wall, in correspondence with the peripheral end of the side and entrance walls, that is, the connecting line between the wall side and the entrance wall. This result is achieved by providing one or more recessed portion in correspondence with the peripheral end of the side and entrance walls, that is, the connecting line between the side wall and the entrance wall, and, in particular, by means of at least one surface of the recessed portion connecting the side wall to the entrance wall of the capsule.
    [031] According to one aspect of the present invention, the one or more said recessed portion (s) is (are) arranged radially with respect to the central geometric axis of the capsule, and preferably, the The capsule comprises a plurality of recessed portions arranged with constant spacing along the aforementioned peripheral end of the side wall, thus providing uniform rigidity of both side wall and the entrance wall of the capsule. According to different possible embodiments, the areas of the capsule that are not provided with recessed portions and where the side wall is connected to the entrance wall, in correspondence with the peripheral edge (2c see below) of the side wall, represent 30% -80 %, preferably 40% -80%, more preferably 40% -60% of the total circumferential length of said peripheral edge. In other words, a length of the circumferential peripheral edge (2c) of the side wall that is 30% to 80%, preferably 40% -80%, more preferably 40% -60% of the total circumferential length, can be provided without recessed portions.
    [032] The provision of a recessed portion, or recess, through the edge, or junction, between the entrance and the side wall results, as mentioned, in greater rigidity than in known capsules. This effect is further enhanced in the preferred embodiment of the invention, where the recessed portion, or recess, has a lower surface that connects directly to the side and entrance walls, the expression "directly connects" is intended to mean that said surface is in a plane P that extends from the sidewall to the entrance wall or contains a geometric axis B that extends from the sidewall to the entrance to the wall. In other words, the preferred surface does not change its inclination with respect to the central geometric axis of the capsule when measured along a straight line directed towards said central geometric axis of the capsule. The surface is inclined in relation to the vertical geometric axis of the capsule forming an acute angle α (visible in figures 2, 4 and 8) with the vertical, that is, in relation to a direction parallel to the central geometric axis A of the capsule, or ( which is the same) with the central geometric axis of the capsule. Preferably, angle a, as defined above, is in the range of 10 ° -65 °, preferably 30 ° -50 °, more preferably about 40-50 °. This description is intended to cover all combinations of the angles α above with the angle ranges β mentioned above.
    [033] In an example of a preferred embodiment, the number of recessed portions, or recesses, is selected from prime numbers, preferably their number is selected from 5, 7, 11 or 13. This has been found to be advantageous especially in a system where the number of blades or perforation elements in the infusion device is 3 or, otherwise, an odd number.
    [034] Advantageously, according to a preferred embodiment, the thickness of the recessed portion is equal to the thickness of the entrance wall and / or that of the side wall outside said recessed portion. It should be noted that in the present description the expression "thickness of the recessed portion" is intended as the thickness of the surface of the capsule in correspondence with the recessed portion, and, in particular, as the thickness of at least one surface of the recessed portion that connects in the entrance wall and the side wall of the capsule, providing continuity on the surface of the capsule in correspondence with the recessed portion. In a preferred embodiment, the thickness of the entrance wall, the recessed portions and the upper wall (entrance) is the same.
    [035] As known and mentioned above, in an example of a preferred embodiment of the invention, at least part of the entrance wall of the capsule comprises a perforation area provided between the recessed portions and the apex of the entrance wall, that is, the area of the entrance wall in correspondence with the central geometric axis of the capsule.
    [036] According to an example of an embodiment, the area or areas of perforation are provided with a reduced thickness in relation to the thickness of the entrance wall outside said perforation area. The perforation area and recessed portions cooperate to allow effective perforation of the capsule inlet wall.
    [037] The present invention also relates to a system comprising the capsule and an infusion device provided with means for piercing the capsule, preferably in correspondence with its inlet wall. The infusion device also feeds an infusion liquid, preferably hot water under pressure, inside the capsule. The infusion device is generally still provided with a limiting element, or receptacle, intended to house at least part of the capsule during the beverage preparation process.
    [038] In use, at least one drilling area is contacted and drilled by the said means of drilling the aforementioned infusion device. According to a possible embodiment, at least one perforation area is arranged along a path that corresponds to the path along which said infusion device piercing means are arranged. The invention provides several advantages over the prior art. The perforation area of the inlet wall is thin and rigid enough to be easily and safely drilled, so that water can be easily fed into the capsule and the contents of the capsule are efficiently extracted to provide a drink. In fact, the use of at least one (preferably, a plurality of) recessed portion, or recess, which extends over an area of the entrance wall and an area of the side wall, in correspondence with the border between the side walls and inlet, that is, in correspondence with an area extending across the "boundary" between said walls, provides a substantial increase in stiffness in relation to the prior art embodiments.
    [039] Contrary to known capsules provided with ribs that extend along the upper inlet wall and which may be difficult to pierce due to such material addition if the ribs are penetrated by the infusion device's piercing means, the lowered portions of the capsule according to the present invention are not configured to provide an increase in the thickness of the entrance wall, as well as the side wall of the capsule. In addition, the recessed portions according to the invention provide a stiffening of the capsule without the use of reinforcement members formed according to an addition of material on the entrance wall and / or on the side wall, thus improving compatibility with the environment of such a capsule, compared to the existing reinforcement means. Brief description of the drawings
    [040] Other advantages and characteristics of the present invention will be more evident from the following description, provided with reference to the attached drawings, purely by way of non-limiting example, where:
    [041] Figure 1 is a perspective view of the capsule, according to the present invention;
    [042] Figure 2 is a radial sectional view from a plane passing through the central geometric axis of the capsule and cutting two recessed portions of the capsule, according to the present invention;
    [043] Figure 3 is a perspective view of the cut capsule shown in Figure 2;
    [044] Figure 4 is an enlarged sectional view of the area between the side and entrance portions;
    [045] Figure 5 shows in a radial section view a different embodiment of the capsule, according to the present invention;
    [046] Figures 6 and 6a show two possible embodiments of the capsule, according to the present invention;
    [047] Figure 7 is a perspective view of another possible embodiment of the capsule, according to the present invention;
    [048] Figure 8 is a radial sectional view of a plane passing through the central geometric axis of the capsule and cutting two recessed portions of the capsule, according to Figure 7;
    [049] Figure 9 shows, from below, the inner portion of the hollow body capsule according to Figures 7 and 8; and
    [050] Figure 10 is a sectional view of another capsule according to the invention. Detailed Description
    [051] Figures 1-10 show capsule 1, according to an example of the embodiments of the present invention, for the preparation of a beverage, such as coffee, tea, hot and cold drinks, or any other type of liquid food. , from a predetermined amount of a product that can be diluted or soluble or extractable, either liquid or solid, contained within the capsule. Preferably, the product dose comprises a powdered 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.
    [052] The capsule, according to the invention, is used within a beverage preparation device (that is, an infusion device) provided with a limiting element, or receptacle (not shown in the figures) intended to house at least part of the capsule during the beverage preparation process. The infusion device is further provided with blades or other means for piercing the capsule, preferably in correspondence with the capsule inlet wall (inlet wall), in order to supply the infusion liquid, preferably hot water under pressure, in the inside the capsule. The capsule 1 used in combination with the infusion device, forms a system for preparing drinks, according to the invention.
    [053] In use, the bounding element of the infusion device is movable in relation to the capsule 1, or vice versa, so that a watertight seal fitting with the capsule 1 can be obtained, and the drilling means can be brought in contact with the capsule for its piercing, in particular with a perforation area 30 of the inlet wall 3 of the capsule. The infusion device and the way it is operated are known per se in the art, and are not an object of the present invention.
    [054] The capsule 1, according to the invention, comprises a side wall 2 which includes portions 2a, 2b, 2d and end portion, or edge portion, 2c, an entrance wall 3 and a lower wall 4, said walls defining a hollow body 5, where the dose of the product is located. The inlet wall 3 is the inlet surface of the capsule, and is intended to be pierced by the infusion device's piercing means (not shown) to obtain the inlet openings allowing the infusion liquid to pass through the capsule. The lower wall 4 allows the drink prepared from the capsule to exit into a container and, as will be described in more detail later, the outlet means of the capsule, that is, the elements that allow the prepared drink to leave, can be done in different ways.
    [055] The capsule 1 has a substantially cup shape, or conical change shape, with a central geometric axis A (vertical geometric axis), in other words, in the example of the embodiment shown in the figures, the side wall 2 is not parallel to the central geometric axis A, and the hollow body 5 is closed by the lower wall 4 at one end and the inlet wall 3 at the opposite end of the side wall in relation to the lower wall 4.
    [056] Additionally, as shown in the figures, the side wall 2 can be provided with different thicknesses along its length between the entrance wall 3 and the bottom wall 4. In the embodiment shown in the figures, the side wall 2 is divided by lines 7 in a lower portion 2a and an upper portion 2b, the lower portion 2a of the side wall 2 is provided with a greater thickness in relation to the thickness of the upper portion 2b of the side wall 2. As seen in the example of the embodiment shown, the thickness of the entry wall is the same as that of the upper portion 2b of the side wall.
    [057] According to possible embodiments, the thickness of the side wall 2, and the entrance wall 3, is comprised in the range of 1.5 mm - 0.15 mm, and preferably, in the range of 1 mm - 0.2 mm. In the embodiment shown in figures 1-6, the thickness tl (see figures 2 and 5) of the inlet wall 3 and the upper portion 2b of the side wall 2 is 0.25 mm. The thickness t2 of the lower portion 2a of the side wall 2 is 0.5 mm.
    [058] Figure 5 shows a preferred embodiment of the capsule, equal to that described in figure 1-4, except for the lower portion 2a of side wall 2 which is provided with a constant thickness t2. Also in this embodiment, the lower portion 2a of the side wall 2 is provided with a greater thickness in relation to the thickness of the upper portion 2b of the side wall 2. As visible from the figures, the portions 2a and 2b of the side wall may have a different inclination in in relation to the vertical axis (i.e., longitudinal) of the capsule, likewise, the inlet wall 3 has two areas with different inclination in relation to the geometric axis A of the capsule.
    [059] Figures 7-9 show an additional embodiment of the capsule 1 where the lower portion 2a of the side wall 2 is provided with a constant thickness. Also in this embodiment the lower portion 2a of the side wall 2 is provided with a greater thickness in relation to the thickness of the upper portion 2b of the side wall 2.
    [060] In figure 10, the inclination in relation to the longitudinal geometric axis A of the side wall portions 2a and 2b is the same.
    [061] In the embodiment shown in figures 1 - 10, the entrance wall 3 of the capsule extends from the peripheral end 2c of the side wall 2, towards the central geometric axis A of the capsule, so that the upper portion of the capsule is closed by the inlet wall 3.
    [062] It should be noted that the entrance wall 3 can be at least partially flat and / or convex and / or tapered, in other words, the entrance wall 3 can be shaped in a different way in order to facilitate both inserting the capsule into the receptacle of the infusion device, and also piercing the wall of the inlet 3 by the infusion device piercing means.
    [063] In addition, the inclination of the entrance wall 3 at the peripheral edge 2c of the side wall 2 can be varied according to different possible embodiments, and preferably the angle β (see figures 2, 4 and 8) formed (inside the capsule ) between the entrance wall 3 and the side wall 2 at the peripheral end 2c, is equal to or greater than 90 °. In the embodiment shown in the figures, the capsule is provided with a substantially convex inlet wall 3, and the angle β formed between the side wall 2 and the inlet wall 3 is greater than 90 °, preferably greater than 90 °, to provide even more rigidity for the structure, a preferred range for angle β is 100 ° to 130 °.
    [064] As known to a person skilled in the art, these different forms determine different volumes of ingredient within the capsule body and therefore can be chosen depending on the desired ingredient volume required without affecting the effect of the underlying boost generated by the principles incorporated in the invention of the present application.
    [065] As mentioned, the thickness of the entrance wall 3 is such that it allows easy drilling by the drilling members of the device (e.g. blades, not shown), additionally, in the preferred embodiment shown, the same, reduced, thickness extends along the side wall to the junction lines 7, where the side wall increases to provide greater rigidity to its lower portion.
    [066] According to the invention, the entrance wall 3 of the capsule comprises at least one perforation area 30, which will be described in more detail later. In the (preferred) embodiments shown, the perforation area 30 is provided between said central geometric axis (A) of the capsule, and at least in a lowered portion 10 on the inlet wall 3.
    [067] Said piercing area or areas 30 are pierced by means of piercing the infusion device which extends along a predetermined path to pierce said capsule, to provide a passage for an infusion liquid within said capsule. According to an aspect of the present invention, the perforation area or areas 30 of the capsule, provided on the entrance wall 3, extend at least in part along a path corresponding to the path along which the perforation means of the infusion device are arranged.
    [068] In use, the perforation area or areas 30 of the inlet wall 3 are contacted and perforated by the infusion device piercing means in order to feed the infusion liquid into the capsule. In order to transmit the required stiffness to the upper portion of the capsule and to guarantee the stiffness required for safe and certain drilling, the capsule according to the present invention is further provided with at least one, preferably a plurality of recessed portions 10 extending on both entrance wall 3 and side wall 2 and connecting them together with areas of said walls, in other words, the capsule is provided with at least a recessed portion 10 forming a corrugation, in correspondence with the peripheral end 2c of the wall side 2. It should be noted that at least a recessed portion 10 defines a change in the shape of both the entrance wall 3 and side wall 2 in correspondence with the peripheral edge 2c of the side wall 2 from which the entrance wall extends. 3.
    [069] In more detail, the recessed portion 10 is provided in correspondence with the peripheral end 2c of the sidewall 2 from which the inlet wall 3 extends, thus, the lowered portion extends over both the sidewall and the entry wall of the capsule. The recessed portion 10 comprises at least one surface connecting the side wall to the entrance wall of the capsule, in fact forming an additional wall that connects the side and entrance walls 2, 3, and is inclined with respect to both.
    [070] In the embodiment shown the thickness of the entry wall 3, the upper portion 2b of the side wall, and the recessed portions 10 are constant, however, the invention includes embodiments of different thickness in different areas of the walls. As shown in the sectional view of figures 2, 3 and 8, for each recessed portion 10 there is a protuberance 11 inside the hollow body 5 of the capsule, that is, the recessed portions 10 of the capsule form a modification of both the side wall and capsule inlet providing a corresponding protrusion inside the capsule.
    [071] As already mentioned above, the lowered portion 10 can be seen as "withdrawing" a volume portion of the capsule from the junction (peripheral edge 2c) between the entrance 3 and side 2 walls, thus the walls are modified and they "sink" below their original level to rise back to the original level and shape. Exemplary forms of the removed volume are prisms or portions of prisms, preferably a prism selected from a triangular, parallelepiped base, cylinders and hexagonal base prisms having a base formed by an irregular or regular polygon. So that at least one surface 12 of the recessed portion 10 "belongs" to at least a portion of a prism used, in the drawing, for "removing" a volume of the capsule.
    [072] The recessed portion 10 thus comprises a surface 12 connecting the inlet wall 3 to the side wall 2 of the capsule. The surface 12 thus forms an additional wall portion of the capsule. In other words, in correspondence with the recessed portion 10, the inlet wall 3 is connected to the side wall 2 by means of at least one surface 12 of the recessed portion 10.
    [073] According to different possible embodiments, each recessed portion 10 is formed by a continuous surface or two or more surfaces that can be oriented differently, so as to form the recessed portion 10. It should be understood that if the recessed portion 10 is obtained by a "removal" of volume from a cylinder of the lowered portion 10, comprising only a continuous surface 12 connecting the entrance and the side wall (see the embodiment shown in figure 6). In the event that the recessed portion is obtained by removing a volume from a differently shaped prism, such as a parallelepiped or hexagonal prism, the recessed portion is formed with two or more surfaces 12 (see the embodiment shown in figure 6a).
    [074] In the embodiment shown in figures 1-10, the recessed portion 10 comprises at least one surface 12 inclined with respect to the vertical, which connects the entrance wall 3 with the side wall. Preferably, the inclined surface 12 forms an acute angle α (visible in figures 2, 4 and 8) with the vertical, that is, with respect to a direction parallel to the central vertical axis of rotation, that is, the longitudinal geometric axis A of the capsule, or, more simply, with the geometric axis A, as shown in figures 2, 4 and 8.
    [075] Preferably, the acute angle α, as defined above, is in the range of 10 ° -65 °, preferably 30 ° -50 °, more preferably about 40-50 °.
    [076] In more detail, in the embodiment shown in the attached figures 1-10, each recessed portion 10 is formed by an inclined surface 12 which is provided with two side surfaces 12 '. The inclined surface 12 is substantially flat and is inclined with respect to the vertical, and the angle α formed between the inclined surface 12 and the vertical, i.e., a direction parallel to the central geometric axis A, is an acute angle.
    [077] The side surfaces 12 'of the recessed portion 10 are preferably arranged on a plane passing through the central geometric axis A of the capsule.
    [078] According to one aspect of the present invention, the recessed portions 10 are arranged radially with respect to the central geometric axis A of the capsule, and preferably the capsule comprises a plurality of recessed portions 10 arranged with a constant spacing along the end peripheral 2c of the side wall 2, thus providing uniform hardening of both the side wall and the entrance wall of the capsule.
    [079] Preferably, the recessed portions 10 are dimensioned so as to provide a constant "full-empty" alternation along the peripheral end 2c of the side wall from which the inlet wall 3 extends, i.e., a constant alternation of the recessed portion 10 (empty) and a portion of the side wall 2 and the entrance wall where no recessed portion is present (filled).
    [080] According to different possible embodiments of the capsule, the number and dimensions of the lowered portions 10 can be different, without affecting the stiffening effect of the capsule to improve its perforation. In the embodiment of the capsule shown in figures 7-10 the number of recessed portions 10 is increased in relation to the embodiments illustrated in figures 1-6. In addition, in the embodiments shown in figures 7-10 the recessed portions are narrower than the recessed portions 10 of the embodiment shown in figures 1-6. More in detail, in figures 7-10 the width w (see figure 7) of the inclined surface 12 of the recessed portions 10 is reduced in relation to the embodiments shown in figures 1-6.
    [081] Figures 1-9 show an even number of recessed portions, that is, six recessed portions in figures 1-6 and twelve recessed portions in figures 7-9. As mentioned earlier, the number of recessed portions can be selected from prime numbers, preferably from 5, 7, 11 and 13. Figure 10 shows a capsule with eleven recessed portions. The choice of a prime number for the number of recessed portions results in an increase in the random positioning of the capsule inside the infusion device receptacle, where the capsule is housed to be pierced, in relation to the piercing elements present in said receptacle. This increase in the random positioning of the capsule in relation to the drilling elements will reduce the possible malfunction of the system.
    [082] Advantageously, according to a possible embodiment, the thickness of the recessed portion 10 is equal to the thickness of the entrance wall 3 and / or the side wall 2 outside said recessed portion, although other thicknesses can be adapted, according to the specifications of the material used to manufacture the capsule. As already mentioned above, in the present description, the expression "thickness of the recessed portion" is intended for the thickness of the section of the capsule wall, in correspondence with the recessed portion, and, in particular, as the thickness of at least one surface 12 of the recessed portion 10 that connects the entrance wall and the side wall of the capsule.
    [083] In the embodiments shown in the figures, the thickness of the recessed portion 10 is equal to the thickness tl (see figures 2 and 5) of the inlet wall 3 and of the upper portion 2b of the side wall 2 and is 0.25 mm. As already mentioned above, the thickness tl (and also the thickness of the recessed portion) can be in the range of 1.5 mm - 0.15 mm.
    [084] Advantageously, the recessed portions 10 provided on the surface of the capsule on both side wall 2 and the inlet wall 3, provide an effective reinforcement of the capsule, thus preventing undesired deformation of the same by the means of piercing the infusion device, without the need for reinforcements produced by an addition of material, which is a thicker portion of the surface of the capsule, in correspondence with that of the entrance wall and / or the side wall.
    [085] In fact, as already mentioned above, at least one perforation area 30 of the entrance wall 3 is provided between the apex of the entrance wall 3, corresponding to the central geometric axis A of the capsule and the recessed portions 10 connecting areas of the entrance wall with side wall areas. Preferably, at least one perforation area 30 of the inlet wall 3 is provided between said central geometric axis A of the capsule, and the end part 10a of at least a recessed portion 10 on the inlet wall 3.
    [086] It should be noted that the expression "extreme part" of the recessed portion 10 is used here to indicate where the recessed portion 10 ends at the entrance wall 3, that is, the part that is closest to the central geometric axis A of the capsule shown with reference 10a in the figures. The side of the recessed portion opposite end 10a is end 10b, which is located on side wall 2. Surface 12 connects end parts 10a and 10b.
    [087] According to another possible embodiment, not shown in the figures, the thickness of said perforation area 30 is less than the thickness of the inlet wall 3 outside the perforation area 30.
    [088] Furthermore, according to a possible embodiment (not shown in the figure), one or more perforation area 30 forms at least one circular line or at least one annular path. It should be noted that the circular line or the annular path can be continuous or discontinuous, that is, forming one or more distinct perforation portions arranged along a circular line or an annular path.
    [089] In addition, the recessed portions 10 provided on the surface of the capsule on both side wall 2 and the entrance wall 3 also provide, in comparison to designs that adopt the same mass of material, a more solid construction for the body of the capsule, which in turn is very advantageous during storage or handling of the capsule by the filling machine or by the end user.
    [090] According to other possible embodiments of the capsule, according to the present invention, the thickness of the inlet wall and / or at least said recessed portion 10 is equal to or reduced in relation to the thickness of the side wall 2.
    [091] In the embodiment shown in figures 1-10, the thickness of the entrance wall 3 is equal to the thickness of the recessed portion 10, that is, the thickness of the surfaces 12, 12 ', is equal to the thickness of the upper portion 2b of the wall lateral 2 below the peripheral end 2c. In fact, independently, from the thickness of the sidewall 2, which can also be variable along its length between the entrance wall and the lower wall, at least the portion 2b of the sidewall, between the peripheral end 2c and the junction lines 7, can have the same thickness as the inlet wall 3 and / or the recessed portion 10.
    [092] In the example of the embodiment shown in the figures, the bottom wall 4, that is, the outlet wall, or the wall comprising the outlet from which the drink leaves the capsule, is a separate element that is connected to the lower portion of the capsule body 5, suitable for closing the capsule.
    [093] Any suitable means of restraining the lower wall 4 to the body of the capsule 5 can be used, and in other possible embodiments of the lower wall 4, it can be produced in one piece with the side wall of the capsule.
    [094] 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 preferably non-porous membrane, for example a laminated sheet or aluminum, preferably a laminated sheet including aluminum. Other suitable materials are a paper filter, a non-woven fabric or a lid made of semi-rigid or rigid material or similar thermoplastic, provided with holes, as already known in other capsules for the production of drinks.
    [095] According to alternative known embodiments, the outlet means may comprise one or more opening in the surface of the capsule, the self-piercing elements that are broken under mechanical force and / or pressure acting on the capsule, or one or more holes that are produced by the infusion device's piercing means. Alternatively, the exit means may include open passageways.
    [096] In the embodiment shown in figures 1-6 on the lower wall 4, outlet means 13 are arranged, that is, elements allowing the extraction of the drink produced from the capsule.
    [097] In the shown embodiment, according to figures 1-6, the capsule is provided with outlet means in the form of a self-piercing element 13 located on the lower wall 4.
    [098] The self-perforating element 13 protrudes from the bottom surface of the bottom wall 4, and is defined by grooves, or lines with reduced thickness, 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. These types of self-drilling elements are described in detail in application W02007 / 063411, on behalf of the present applicant, for which reference is made for further details. The shown embodiment has an element 13, centrally located, forming a central outlet for the preparation in the form of a circumference. Other embodiments may have a plurality of smaller outlets located at different positions, for example, peripherally or radially.
    [099] Another type of outlet means has a plurality of protrusions, but the reduced thickness of the periphery of the rib is replaced by a cutting area of the wall, along three sides of the outlet, the fold portion being still present. Additionally, in this embodiment the outlets can protrude both outwardly and inwardly in relation to the wall 4. It should be noted that the aforementioned outlet elements can be opened under the action of mechanical force, or through the pressure of the infusion liquid , or as a result of the combined action of the pressure of the infusion liquid with the mechanical force exerted by the infusion device, or by the hydraulic force exerted by the pump.
    [100] 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 means is a water-soluble membrane.
    [101] According to a possible embodiment, the capsule is produced in food grade materials, for example, polypropylene or PLA (polylactic acid), which is also resistant to both high temperature and the pressure of the infusion liquid injected into it. during the beverage preparation process or softening, appropriately, under normal operating temperatures, in order to increase the sealing properties of the sealing means normally, but not necessarily, manufactured from the same plastic part, as in the case of materials and methods readily available to the technician in the subject.
    [102] Furthermore, as shown in figures 2, 4, 5 and 8, the capsule 1 can be provided with a plurality of ribs 8 protruding from the inner surface of the inlet wall 3. Ribs 8 are preferably arranged in a radial shape from the central portion of the entrance wall 3, substantially, from the central geometric axis A. The ribs 8 provided in the central portion of the internal surface of the entrance wall are visible in figure 9.
    [103] It should be noted that, in the embodiment of the capsule provided with such ribs 8, one or more perforation area 30 is preferably arranged between the recessed portions 10 and the ribs 8. In detail, one or more perforation area 30 is arranged in the entrance wall 3 between the extreme portion 10a of the lowered portion 10 and the extreme portion 8a of the ribs 8.
    [104] As already mentioned above, the thickness of the perforation area 30 can be less than the thickness of the inlet wall 3 outside the perforation area 30.
    [105] Advantageously, by providing one or more perforation area 30 between the recessed portions 10 and the ribs 8, arranged in correspondence with the central geometric axis A, an effective and safe perforation of the entrance wall can be obtained.
    [106] Furthermore, as seen in the sectional views of figures 2, 3 and 8, the capsule is provided with vertical supports 9 protruding from the inner surface of the side wall 2 and intended to prevent the capsules from piling up during the process production. The thickness, shape and radius of such support (s) will vary depending on the manufacturing methods chosen, to be selected from those mentioned above, as these can be easily deduced by a person skilled in the art. In the example of the embodiment shown, a sealing element 20 is provided at the flange-like edge 21 of the capsule, that is, the portion of the capsule designed to be brought into contact with the receptacle, and in particular with the lower edge of the receptacle, or that is, the pressing portion of the container, to provide the sealing fit.
    [107] Preferably, the sealing member is produced in one piece with the capsule and is formed as an element protruding from the flange-like edge 21 of the capsule.
    权利要求:
    Claims (18)
    [0001]
    1. Capsule for preparing a drink from an infusion device, said capsule comprising a side wall (2), an inlet wall (3) and a bottom wall (4) forming a hollow body (5) where a product infusion is contained and having a central geometric axis (A), said entrance wall (3) extending from a peripheral end (2c) of the lateral wall (2) in the direction of said central geometric axis (A), being that said capsule walls comprise at least one recessed portion (10), said recessed portion (10) extending over both said side walls (2) and said entry wall (3), where at least one said recessed portion (10) corresponds to a protuberance (11) within the hollow body (5) of the capsule, and at least one of said recessed portion (10) is provided on said side and entrance walls in correspondence with said peripheral end (2c ) on the side wall (2) to connect the together, characterized by the fact that at least one of the recessed portion (10) comprises a surface (12) forming an additional wall that is inclined with respect to both side and entrance walls (2, 3), and in relation to said axis central geometric shape (A) of the capsule, and said surface is connected to said side and entrance walls (2, 3), and in which said surface is on a plane extending from said side wall (2 ) to said entrance wall (3) or said surface has a geometric axis (B) that extends from said side wall to said entrance wall.
    [0002]
    2. Capsule according to claim 1, characterized in that said recessed portion (10) has a shape that is a prism or a portion of a prism, preferably selected from a parallelepiped, a cylinder, a triangle or a hexagonal prism.
    [0003]
    3. Capsule according to any one of claims 1 or 2, characterized in that at least one said surface (12) of said recessed portion (10) directly connects areas of the side and entrance walls that are spaced from the edge between the side and entrance walls.
    [0004]
    4. Capsule according to claim 2, characterized in that said recessed portion (10) or at least one said surface (12) of said recessed portion (10) forms an acute angle (a) in relation to said axis central geometric (A) of the capsule, said acute angle (a) being comprised in the range of 10 ° -65 °, preferably 30 ° -50 °, more preferably 40 ° -50 °.
    [0005]
    5. Capsule according to any one of claims 1 to 4, characterized in that at least one of the recessed portion (10) is arranged radially in relation to the central geometric axis (A) of the capsule.
    [0006]
    6. Capsule according to any one of claims 1 to 5, characterized in that it comprises a plurality of recessed portions (10) arranged with constant spacing along the aforementioned peripheral end (2c) of the side wall (2), for provide a corrugation or undulation of the portions of both side and entrance walls.
    [0007]
    7. Capsule according to any one of claims 1 to 6, characterized in that the angle (β) formed between said side wall (2) and said entrance wall (3) at said peripheral end (2c) said side wall (2) being equal to or greater than 90 °, preferably greater than 90 °, more preferably, 100 ° to 130 °.
    [0008]
    8. Capsule according to any one of claims 1 to 7, characterized in that the number of recessed portions (10) is selected from prime numbers, preferably selected from 5, 7, 11 and 13.
    [0009]
    9. Capsule according to any one of claims 1 to 8, characterized in that the thickness, in correspondence with said recessed portion (10), is equal to the thickness of the entrance wall (3) and / or the side wall (2) outside said lowered portion (10).
    [0010]
    10. Capsule according to any one of claims 1 to 9, characterized in that the thickness of the entrance wall and / or at least one of the recessed portion (10) is equal to or reduced in relation to the thickness of the side wall (two) .
    [0011]
    11. Capsule according to any one of claims 1 to 10, characterized in that at least a portion of the side wall (2b) below said peripheral end (2c) has the same thickness as said entrance wall (3) and / or at least one said recessed portion (10).
    [0012]
    12. Capsule according to any one of claims 1 to 11, characterized in that said side wall (2) has a different thickness along its length between the entrance wall (3) and the lower wall (4 ).
    [0013]
    13. Capsule according to any one of claims 1 to 12, characterized in that said entrance wall (3) comprises at least one perforation area (30) provided between said central geometric axis (A) of the capsule and at least a recessed portion (10) in said entry wall (3).
    [0014]
    14. Capsule according to claim 13, characterized in that the thickness of the said perforation area (30) is less than the thickness of the entrance wall (3) outside the said perforation zone (30) .
    [0015]
    15. Capsule according to claim 13 or 14, characterized in that said perforation area (30) forms at least one circular line or at least one annular path.
    [0016]
    16. Capsule according to any one of claims 1 to 15, characterized in that a barrier layer is provided on or within said capsule body to prevent or reduce the transmission of gas therethrough.
    [0017]
    17. A system for preparing a beverage, comprising a capsule (1), as defined in any one of claims 1 to 16, and an infusion device comprising piercing means arranged along a predetermined path for piercing said capsule for injection an infusion liquid within said capsule, characterized by the fact that said inlet wall (3) of the capsule comprises at least one perforation area (30) in said inlet wall (3), at least one said perforation area being contacted and perforated by said means of piercing said infusion device.
    [0018]
    18. System according to claim 17, characterized in that at least one said drilling area (30) is arranged along a path corresponding to the path along which the aforementioned infusion device piercing means pierce the said entrance wall.
    类似技术:
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    同族专利:
    公开号 | 公开日
    KR20140105764A|2014-09-02|
    CN104066659B|2017-03-01|
    JP2015501693A|2015-01-19|
    CN104066659A|2014-09-24|
    AU2012342167A1|2014-06-19|
    PT2782849T|2016-09-06|
    DK2782849T3|2016-09-12|
    US20140318380A1|2014-10-30|
    CA2856494A1|2013-05-30|
    RU2638517C2|2017-12-13|
    BR112014012370A2|2017-05-30|
    HK1202501A1|2015-10-02|
    EP2782849B1|2016-06-01|
    EP2782849A1|2014-10-01|
    RU2014125284A|2015-12-27|
    WO2013076551A1|2013-05-30|
    US10752431B2|2020-08-25|
    ES2599216T3|2017-01-31|
    AU2012342167B2|2017-06-01|
    KR102130181B1|2020-07-06|
    CA2856494C|2020-06-02|
    WO2013076519A1|2013-05-30|
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    法律状态:
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-09-17| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-06-16| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-11-03| 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 20/11/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    PCT/IB2011/002773|WO2013076519A1|2011-11-22|2011-11-22|Capsule for beverage preparation|
    IBPCT/IB2011/002773|2011-11-22|
    PCT/IB2012/002408|WO2013076551A1|2011-11-22|2012-11-20|Capsule and system for beverage preparation|
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