• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    beverage capsule. beverage capsule comprising a housing (2) which in turn comprises: a base wall (3) and a side wall (4) that define a cavity (5) which is suitable for retaining an initial product (p) for combination with a fluid (f) in order to obtain a final product and also a flank margin (7) extending from the side wall (4). the base wall (3) has an opening bounded by a base margin (3a) that extends to said side wall (4); wherein said capsule also comprises a cover element (8) attached to said flank margin (7) to hermetically seal said cavity (5) which is perforable by means of extraction or injection means of a release machine, in the which said capsule is usable and a closing element (9) attached to said base margin (3a) to hermetically seal said capsule, which is respectively perforable by means of injection or extraction means from said release machine; wherein said capsule is characterized because said closing element (9) is larger than said base wall (3) and is also attached to said side wall (4) to remain attached to said capsule even in the presence of an increase in pressure inside the aforementioned capsule.
    公开号:BR112016007413B1
    申请号:R112016007413-0
    申请日:2014-10-16
    公开日:2021-03-23
    发明作者:Andrea Bartoli；Davide Capitini；Alessandro Grillenzoni；Flavio Traldi
    申请人:Sarong Societa' Per Azioni；
    IPC主号:
    专利说明:

    [0001] [001] The present invention relates to capsules or containers for preparing products, such as beverages, in automatic release machines.
    [0002] [002] In particular, the present invention relates to a sealed, single-dose, disposable capsule containing an initial product, such as, for example, powdered coffee or an infusion product that is capable of generating a final product when interacting with pressurized fluid.
    [0003] [003] Capsules known for use in delivery machines are disposable, single-dose containers that comprise an outer casing, made of plastic impermeable to liquids and gases and shaped like a beaker or cup.
    [0004] [004] Figure 3 shows a capsule 1 as described in patent application ITMO2013A000214 from the same depositor.
    [0005] [005] The casing, indicated by 2, has a base wall 3 and a side wall 4 that define an open cavity 5 into which a product P, such as coffee or tea powder, can be inserted, from which the drink can be obtained. A flank-shaped edge 7 is connected to the side wall 4, extends from it and is arranged around an upper opening of the cavity 5. The upper opening is hermetically sealed by a covering element 8, usually a foil. aluminum or plastic, which is attached to the edge 7 of the casing 2 to seal the product P inside the container.
    [0006] [006] The base wall 3 of the capsule 1 also has a preferably circular opening bounded by an annular base margin 3a over which another cover element 25 is fixed, made of a material that is similar to the material of the cover element 8.
    [0007] [007] The capsule is perforable to allow the pressurized liquid, usually water, to be supplied and the obtained coffee drink to come out. In particular, the other cover element 25 and cover element 8 are perforable respectively by means of injection of suitable pressurized fluid and means of extraction from a delivery machine, to allow the pressurized liquid to be supplied and the drink to be extracted.
    [0008] [008] Alternatively, the capsule can also be inserted into release machines of known type, in which the cover element 8 and the other cover element are respectively perforable by means of pressurized fluid injection and extraction means from a machine. release.
    [0009] [009] In other words, the cover element 8 and the additional cover element 25 are made with an easily perforable material that makes the capsule can be used with great flexibility of use in delivery machines, regardless of whether the cavity is up or down.
    [0010] [010] The capsules are usually filled with the starting product P through a manufacturing process that supplies the thermoformed wrappers to a filling station and then supplies those filled wrappers to a welding station to seal the cavity when welding the element. of cover to the flank margin of the capsule, in which the other cover element has already been fixed to close the base margin 3a. During this fixation of the cover element, each capsule is supplied with an inert gas, such as nitrogen, to replace the air to keep the organoleptic properties of the initial product P unchanged due to the inhibition and bacteriostatic action of the gas used.
    [0011] [011] In any case, if ground coffee is supplied to each casing, it is known that, after roasting and grinding, the coffee continues to be transformed even in the presence of inert gas and releases carbon dioxide and aromas over time. time because it is inversely proportional to the time since roasting. For this reason, ground coffee is usually subjected to a step of removing gases from storage silos, which is necessary to free the coffee from the carbon dioxide that is naturally released by the coffee.
    [0012] [012] A problem with capsules of the known type is that they can be filled with ground coffee that has not been subjected to the gas removal step or has not been submitted to the gas removal step efficiently. In these capsules, coffee can release carbon dioxide and therefore cause an unexpected increase in pressure inside the capsule, which can cause deformation or unwanted swelling of the cover element and / or the additional cover element, but which can even compromise the integrity of the capsule, usually in the additional cover element.
    [0013] [013] Excessive pressure can, in fact, cause the additional cover element to break and separate from the base wall of the capsule, where the additional cover element is connected to the base wall by a welding edge that depends on the dimensions , which are generally reduced, from the base wall.
    [0014] [014] The problem of carbon dioxide release is not only known for coffee, as mentioned earlier, but also for certain types of partially fermented tea, which can then continue to ferment, releasing carbon dioxide even after filling the capsules. In this case too, a filled capsule may rupture due to excessive pressure build-up inside the capsule.
    [0015] [015] This problem is even greater if it is considered that, after filling the capsules with the initial product P and packaging it, they can be stored for a long time in warehouses while waiting to be distributed to consumers. A capsule can also break after being purchased by a consumer and therefore cause damage in an uncontrolled manner.
    [0016] [016] An object of the present invention is to improve known capsules for beverages, particularly capsules that are useful in known delivery machines, ensuring the integrity of the capsule regardless of the starting product with which it is filled.
    [0017] [017] Another object is to design a capsule that can also be filled with initial products capable of releasing gas after filling without compromising its integrity over time.
    [0018] [018] An additional object is to create a capsule in which a closing element is fixed to a flank margin and another closing element is fixed to the base wall, in which the additional closing element does not separate from the base wall when subjected to pressure.
    [0019] [019] Yet Another object is to obtain a capsule that is cheap and easy to produce.
    [0020] [020] According to a first aspect of the present invention, a beverage capsule according to claim 1 and one or more of its dependent claims is provided.
    [0021] - a Figura 1 é um corte transversal esquemático de uma cápsula de acordo com a presente invenção com partes removidas para fins de clareza; - a Figura 2 é um corte transversal esquemático parcialmente ampliado de uma parede base da cápsula na Figura 1; e - a Figura 3 é um corte transversal esquemático de uma cápsula conhecida para bebidas. [021] The present invention can be better understood and implemented with reference to the accompanying drawings, which illustrate some of its achievements by means of a non-limiting example, in which: Figure 1 is a schematic cross-section of a capsule according to the present invention with parts removed for the sake of clarity; Figure 2 is a schematic cross section partially enlarged of a base wall of the capsule in Figure 1; and Figure 3 is a schematic cross-section of a known beverage capsule.
    [0022] [022] With reference to Figure 1, a capsule 1 for drinks according to the present invention is illustrated to generate a final product, in particular a hot beverage, for example, coffee, barley, herbal tea, tea, chocolate etc. when injecting a hot pressurized fluid F into the capsule.
    [0023] [023] It is stated that, for uniformity with the state of the art capsule described in Figure 3, the same reference numbers are assigned to the same components.
    [0024] [024] The capsule 1 according to the present invention comprises an outer shell or container 2 which, in turn, comprises a base wall 3 and a side wall 4 which define an open cavity 5 and which is suitable for retaining an initial product P, such as a soluble or filterable food product to be combined with a fluid, usually water, to obtain a final product. The base wall 3 and the side wall 4 define a body of the capsule 1 substantially in the form of a beaker or cup. According to one embodiment, the base wall 3 is flat and, in particular, has a circular shape.
    [0025] [025] The housing further comprises a flank margin 7 connected to the side wall 4 extending from it, arranged around an upper opening of the cavity 5. Flank margin 7 is also opposite the base wall 3 and faces the external side in relation to the cavity 5.
    [0026] [026] The base wall 3 of the capsule has a preferably circular opening 30 bounded by a base margin 3a, for example, annular, which extends to the side wall 4 of the capsule and comprises an annular wall 31 which extends around the opening 30 inside the cavity 5 and defines a recessed portion of the base wall 3, made in a single body with the base wall 3.
    [0027] [027] The annular wall 31 has an internal end equipped with a corresponding margin 31a facing an axis of symmetry A of the capsule 1 that delimits an orifice 32 substantially the same size as the opening 30. The annular wall 31 thus defines a conductor of passage with opening 30 which is an outer end opening, that is, facing the outer side of the capsule, on the side opposite the hole 32 of the inner end.
    [0028] [028] As shown in Figure 1, the margin 31a of the annular wall 31 faces the portion of the cavity 5 intended to receive the initial product P and contributes, if the base wall 3 of the capsule 1 is intended to be perforated, during the use, through injection of the release machine and if the initial product is ground coffee, to keep the aforementioned ground coffee powder, avoiding the creation of preferred fluid paths that can result in a low quality drink. In fact, it is known that the pressurized fluid injected into the capsule needs to be distributed as evenly as possible in the initial product in order to be able to extract aromatic components to be transferred to the beverage, above all if the initial product is coffee powder. The passage conductor defined by the annular wall 31 reaches, during use, the guide means of injection means of the release machine.
    [0029] [029] Wrapper 2 is made by forming a thermoformable plastic sheet (not shown) that is suitable for the process of preparing the final product from the initial product P, for example, to be able to withstand temperatures up to 100 ° C and pressures up to 5 bar without deformation.
    [0030] [030] This plastic sheet 100 can have a thickness ranging from 15 microns to 1600 microns, particularly from 400 microns to 1200 microns, and is made of polyolefins, for example, polypropylene PP and / or polyethylene PE and / or polyamide PA.
    [0031] [031] In detail, the sheet material may comprise a first layer of material, in particular, suitable for contacting and / or conserving the initial product P, for example, made of PP polypropylene which is impermeable to moisture, a second layer of material that does not come into contact with the initial product P, made with a material that is impermeable to gases, in particular oxygen and optionally also to moisture, also known as a barrier layer, and a third outer layer of material.
    [0032] [032] The barrier layer, interposed between the first and the third layer, ensures complete isolation of cavity 5 from the external environment, particularly if the first layer is permeable to oxygen over time. The barrier layer is 2 microns to 100 microns thick, particularly 15 microns to 70 microns and is made, for example, of ethylene vinyl alcohol (EVOH), which is impermeable only to oxygen, or polyvinylidene chloride (PVDC), which is impermeable to oxygen and moisture.
    [0033] [033] According to a first (not shown) realization of the sheet material, the first and the third layer are made of the same material, for example, polypropylene PP, and are coupled to the barrier layer interposed between them. These layers can be the same thickness (for example, 350 microns) or different thicknesses (for example, the first layer can be 500 microns thick, while the third layer can be 300 microns thick).
    [0034] [034] According to a second embodiment (not shown), the first layer is a support and is made of PP polypropylene, the second layer is the barrier layer (EVOH or PVDC) and the third layer is an extruded polypropylene layer PP or PE polyethylene, with a thickness of 15 microns, which is attached to the first and second layers during the sheet material manufacturing process.
    [0035] [035] The sheet material, according to the first embodiment and the second embodiment, is then selected to protect, over time, the initial product P contained in the capsule against moisture and oxygen.
    [0036] [036] The capsule additionally comprises a cover element 8 attached to the edge 7 of the casing 2 to hermetically seal the capsule 1, that is, the open cavity 5, in order to preserve the product P. The cover element 8 comprises a film of aluminum or a plastic film equipped with a barrier layer that is perforable by means of extraction of the final product or by injection of the initial fluid F from the release machine.
    [0037] [037] The covering element 8 is fixed to the edge 7 of the casing 2 by means of thermal, ultrasonic welding or gluing. Preferably, the covering element 8 is fixed to the housing 2 by means of locking heat welding, so that this heat welding ensures that the capsule preserves, over time, the initial product P in ideal conditions when stored during its storage.
    [0038] [038] A closing element 26, which is similar to the covering element 8 and is perforable by means of injection of fluid F or by means of extraction of the final product, is fixed to the other margin 3a outside the base wall 3, to seal hermetically opening 30. As already mentioned for the covering element 8, the closing element 26 is fixed to the annular margin 3a by means of thermal or ultrasonic welding or by means of glue and, preferably, the closing element 26 is fixed to the enclosure 2 by means of locking thermal welding on a junction part 33.
    [0039] [039] The thickness of the covering element 8 and / or the closing element 26 is expressed in weight and is from 5 to 120 g / m2.
    [0040] [040] According to the present invention, the closing element 26 has dimensions larger than the base wall 3 and is also attached to the side wall 4 to remain attached to the capsule even in the presence of pressure increase inside the capsule, as will be noted below.
    [0041] [041] It should be noted that the base margin 3a defines a base edge 34 with the side wall 4 and that the closing element 26 extends beyond the base edge 34 and is superimposed on the side wall 4 along the entire base edge 34 and, in particular, angular in all the contour with respect to the axis of symmetry A of the capsule.
    [0042] [042] The closing element 26 is superimposed and fixed to the side wall by at least a 2 mm strip measured from the base edge 34, particularly to 2.5 mm, but can be fixed to the side wall 4 by the entire wall side 4.
    [0043] [043] If the closing element 26 has a disk shape and the base wall is circular and flat, or a polygon that can be inserted in a circle, the closing element 26 will have a larger diameter than the base wall 3.
    [0044] [044] The side wall 4 comprises a first portion 4a connected to the base edge 34 and a second portion 4b which defines, with the first portion, a side edge 35. The second portion 4b extends to the flank margin 7, as shown in Figure 1.
    [0045] [045] It should be noted that the first portion 4a has a frustoconic shape and the first slope, which is greater than a second slope of the second portion 4b, which also has a frustoconic shape. The first and second slopes are measured with respect to the capsule's axis of symmetry A.
    [0046] [046] Anyway, it is indicated that the side wall 4 and, therefore, the capsule body may have different shapes and not have frustoconic portions, but, for example, truncated pyramid portions that can be inscribed in frustoconic portions . The first portion may be, for example, a truncated pyramid and the second portion may also be a truncated pyramid, both, for example, with an octagonal base, but with a different slope.
    [0047] [047] Optionally, the side wall 4 of the capsule may also comprise a series of frustoconic or truncated pyramid portions with an inclination that is gradually reduced and, therefore, comprise a series of lateral edges.
    [0048] [048] In other words, although the closing element 26 is shown in Figures 1 and 2 as associated with the enclosure 2 with a specific shape, the enclosure 2 may have another shape, with respect to the base wall 3, the side wall 4 or the flank margin 7 and everything mentioned above with respect to the closing element 26 would remain valid.
    [0049] [049] It has been mentioned that the closing element 26 is fixed to the base margin 3a and to the side wall 4 by means of thermal welding.
    [0050] [050] In detail, the closing element 26 is attached to the side wall 4 throughout the first portion 4a. In other words, the junction portion 33 by means of which the closing element 26 is thermally welded to the capsule 1 extends on the annular base margin 3a, which is flat, and on the first portion 4a of the side wall 4, oblique to the margin base 3a, through the base edge 34 to the side edge 35.
    [0051] [051] Experimentally, it was found that the closing element 26 remains attached to the capsule even in the presence of pressure increase inside the capsule because the junction portion 33 placed on the base margin 3a separates under pressure of about 2 bar , while the junction portion 33 placed on the side wall 4 remains unchanged up to 4.5 bar, pressure beyond which the shell 2 of the capsule 1 is destroyed together with the closing element 26.
    [0052] - a 0,5 bar, o elemento de fechamento 26 exibe inchaço, mas a porção de junção 33, colocada na margem base 3a e na primeira porção 4a, permanece inalterada; - a 1 bar, a porção de junção 33 colocada na margem base 3a começa a separar-se, mas a porção de junção colocada na primeira porção 4a permanece inalterada; - a cerca de 2 bar, a porção de junção 33 colocada na margem base 3a se separa, mas a porção de junção colocada na primeira porção 4a permanece inalterada; - a 4,5 bar, a porção de junção 33 na primeira porção 4a permanece inalterada; e - acima de 4,5 bar, o elemento de fechamento 26 e o invólucro 2 são destruídos por excesso de pressão, mas a soldagem térmica na porção de junção 33 através da qual o elemento de fechamento 26 é unido à cápsula 1 permanece inalterada. [052] It was found in detail that: - at 0.5 bar, the closing element 26 exhibits swelling, but the junction portion 33, placed on the base margin 3a and the first portion 4a, remains unchanged; - at 1 bar, the junction portion 33 placed on the base margin 3a begins to separate, but the junction portion placed on the first portion 4a remains unchanged; - at about 2 bar, the junction portion 33 placed on the base margin 3a separates, but the junction portion placed on the first portion 4a remains unchanged; - at 4.5 bar, the junction portion 33 in the first portion 4a remains unchanged; and - above 4.5 bar, the closing element 26 and the housing 2 are destroyed by excess pressure, but the heat sealing in the joint portion 33 through which the closing element 26 is connected to the capsule 1 remains unchanged.
    [0053] [053] Therefore, up to 4.5 bar, it is guaranteed that a margin in circumference of the closing element 26 remains attached to the capsule, particularly to its side wall 4, by guaranteeing by locking heat welding the integrity of the capsule even under high pressures.
    [0054] [054] In fact, it was observed that the pressure released inside the cavity 5 of the capsule tensions the closing element 26 perpendicularly in the opening 30 and this causes the joint portion to be pushed in an orthogonal direction to the welding plane at the margin base 3a.
    [0055] [055] Anyway, the junction portion 33 is tensioned only obliquely in the first portion 4a, after the separation of the base margin 3a, because the closing element 26 continues to be pushed mainly in the direction perpendicular to the opening 30 by the pressure inside the capsule.
    [0056] [056] Due to the fact that the closing element 26 is fixed to the base margin 3a and to the side wall 4, the capsule can also be filled with an initial product that releases gas inside the capsule because the cover element 8 and the closing element 26 can overcome high pressures without compromising the integrity of the capsule.
    [0057] [057] It follows that the capsule can also be filled with coffee that had no gases removed because the greater pressure that can develop inside a capsule is less than the pressure at which the closing element 26 separates of the capsule. The capsule of the present invention then remains sealed even after the time since filling, regardless of the initial product with which the capsule is filled (ground coffee with or without removed bases, or tea) and regardless of the time at which it is consumed by user.
    [0058] [058] In addition, the manufacturing process for each capsule becomes cheaper because it is no longer necessary to subject the ground coffee to a gas removal step, but it is possible to fill the capsules with coffee that has just been roasted and ground.
    权利要求:
    Claims (9)
    [0001]
    DRINK CAPSULE, comprising a wrapper (2) which, in turn, comprises: a base wall (3) and a side wall (4) that define a cavity (5) that is suitable for retaining an initial product (P) to be combined with a fluid (F) to obtain a final product and also a flank margin (7) extending from said side wall (4), in which said base wall (3) has an opening (30) ) delimited by a base margin (3a) that extends to the aforementioned side wall (4); wherein said capsule additionally comprises a cover element (8) attached to said flank margin (7) to hermetically seal said cavity (5) which is perforable by means of extraction or injection means of a release machine, in the which said capsule is usable, and a closing element (26) fixed to said base margin (3a) to hermetically seal the said opening (30), whose closing element (26) is respectively perforable by means of injection or extraction of the aforementioned release machine; wherein said capsule is characterized by said closure element (26) having dimensions larger than said base wall (3) and also being attached to said side wall (4) to remain attached to said capsule even in the presence of increased pressure inside the aforementioned capsule.
    [0002]
    CAPSULE according to claim 1, characterized in that said base margin (3a) defines a base edge with said side wall (4), wherein said closing element (26) extends beyond said base edge (34) ) and is superimposed on the aforementioned side wall (4) along the entire base edge (34).
    [0003]
    CAPSULE according to either claim 1 or claim 2, characterized in that said closing element (26) is superimposed and fixed to said side wall by at least a 2 mm strip measured from said base edge (34), in accordance with specific preference for a 2.5 mm strip.
    [0004]
    CAPSULE according to any one of claims 1 to 3, characterized in that said closing element (26) is superimposed and fixed to said side wall (4) throughout the side wall (4).
    [0005]
    CAPSULE according to any one of claims 2 to 4, characterized in that said closing element (26) has a disc shape and a diameter larger than the diameter of said base wall (3).
    [0006]
    CAPSULE according to claim 5, characterized in that said side wall comprises a first portion (4a) connected to said base edge (34) and a second portion (4b) which defines with said first portion (4a) a side edge ( 35), wherein said closing element (26) is attached to said first portion (4a) of said side wall (4).
    [0007]
    CAPSULE according to claim 6, characterized in that said first portion (4a) has a frustoconic shape and has first inclination that is greater than the second inclination of said second portion (4b), which also has a frustoconic shape, in which said first and said second slope are measured with respect to an axis of symmetry (A) of said capsule.
    [0008]
    CAPSULE according to any one of claims 1 to 7, characterized in that said closing element (26) is fixed to said base margin (3a) of said capsule (1) and to said side wall (4) by means of thermal welding in a junction portion (33).
    [0009]
    CAPSULE according to any one of claims 6 to 8, characterized in that said junction portion (33) extends on said base margin (3a) and on said first portion (4a) through said base edge (34) until the mentioned lateral edge (35).
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    同族专利:
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    KR102240605B1|2021-04-16|
    JP2016539675A|2016-12-22|
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    法律状态:
    2020-01-07| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-02-02| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-03-23| 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 16/10/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    IT000297A|ITMO20130297A1|2013-10-17|2013-10-17|CAPPULE FOR BEVERAGES|
    ITMO2013A000297|2013-10-17|
    PCT/IB2014/065358|WO2015056202A1|2013-10-17|2014-10-16|Capsule for beverages|
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