• 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:
    Herein described is a capsule (100) for preparing beverages by introducing the capsule (100) into a reception seat (305) of a machine suitable to dispense a process liquid in the capsule (100), wherein said capsule (100) comprises: a container body (105) suitable to contain a dose of a food substance suitable to obtain the beverage by interacting with the process liquid, which is shaped like a drinking-glass and it is provided with a generally tubular-shaped lateral wall (110), an annular flange (130) concentrically deriving from an axial end of said lateral wall (110) and projecting radially towards the external of the container body (105), an annular centring rib (150) axially deriving from the annular flange (130), which is concentric to the lateral wall (110) of the container body (105) and it is separated therefrom by an annular interspace (155) suitable to receive, substantially fittingly, an axial end (320) of a substantially tubular jacket (315) which delimits the reception seat (305) of the machine, so as to centre the capsule(100) in said reception seat (305), and an annular sealing lip (165) axially deriving from the annular flange (130) and projecting into said interspace (155), which is suitable to be compressed by said axial end (320) of the jacket (315) of the reception seat (305) to provide the sealing.
    公开号:EP3705419A1
    申请号:EP20159679.8
    申请日:2020-02-27
    公开日:2020-09-09
    发明作者:Daniele Simonazzi
    申请人:Flo SpA；
    IPC主号:B65D85-00
    专利说明:
    [0001] The present invention regards a capsule for preparing beverages, for example coffee, tea, infusions or other. State of the art
    [0002] In order to prepare the beverages like the ones mentioned above, the trend of using the machines which use disposable capsules is currently increasingly common.
    [0003] These capsules usually comprise a container body, substantially shaped like a drinking-glass, which contains a dose of a food substance, for example powder coffee, suitable to produce the beverage by interaction with the hot water, for example through an infusion process, percolation and/or solubilisation.
    [0004] The food substance is sealed inside the capsule by means of a sealing film, which is fixed on an annular flange which surrounds the entrance of the drinking-glass-like body. In order to prepare the beverage, the capsule is coupled to an extraction unit installed in the machine.
    [0005] The extraction unit usually comprises a seat for receiving the capsule, an abutment body suitable to block the capsule in said reception seat, means for drilling the sealing film and/or the bottom of the drinking-glass-like body and means for dispensing hot water.
    [0006] The reception seat is generally delimited by a substantially tubular-shaped jacket having an axial end facing and juxtaposed with respect to the abutment body.
    [0007] The jacket and the abutment body are mutually moveable along the direction of the axis of the jacket, so as to allow the insertion of the capsule and its release after use.
    [0008] When the capsule is in the reception seat, the drinking-glass-like body is coaxially inserted into the jacket with the annular flange which remains clamp-squeezed between the abutment body and the axial end of the jacket.
    [0009] In order to guarantee the airtightness of the reception seat, the annular flange often has sealing elements, for example one or more annular lips, which are pressed against the axial end of the jacket following the sealing of the abutment body.
    [0010] However, these sealing elements operate correctly only when the capsule is suitably inserted in the jacket which delimits the reception seat.
    [0011] In light of the above, solutions in which the annular flange of the capsule also comprises two circumferential centring ribs, which surround the sealing elements and define an annular cavity suitable to be coupled with the axial end of the jacket, were proposed. However, a drawback of this solution lies in the fact of complicating the shape of the capsule, with ensuing increase of the construction difficulties and increase of the costs.
    [0012] Furthermore, in order to obtain the centring ribs, there arises the need to increase the width of the annular flange, by reducing the diameter of the container body of the capsule and thus the volume available for the food substance and for the interaction thereof with the hot water. Description of the invention
    [0013] An object of the present invention is to overcome the aforementioned drawbacks of the prior art through a solution that is simple, rational and inexpensive.
    [0014] These and other objects are attained by the characteristics of the invention, which are outlined in the independent claims. The dependent claims outline preferred and/or particularly advantageous aspects of the invention.
    [0015] In particular, an embodiment of the present invention provides a capsule for preparing beverages by inserting the capsule into the reception seat of a machine suitable to dispense a process liquid, typically water (e.g. hot water), into the capsule, wherein said capsule comprises: a container body suitable to contain a dose of a food substance suitable to obtain the beverage by interacting with the process liquid, which is shaped like a drinking-glass and is provided with a generally tubular-shaped lateral wall, an annular flange concentrically derived from an axial end of said lateral wall and radially projecting towards the external of the container body, an annular centring rib axially deriving from the annular flange, which is concentric to the lateral wall of the container body and it is separated from the same by an annular interspace suitable to receive, substantially fittingly (i.e. without clearance or with minimum clearance), an axial end of a substantially tubular jacket that delimits the reception seat of the machine, so as to centre the capsule in said reception seat, and an annular sealing lip axially deriving from the annular flange and projecting into said interspace, which is suitable to be compressed by said axial end of the jacket of the reception seat to obtain a sealing.
    [0016] Thanks to this solution, the function for centring the capsule in the reception seat is obtained by exploiting the lateral wall of the capsule and thus using only one centring rib.
    [0017] Thus, this allows simplifying the shape of the container body of the capsule and the diameter of the lateral wall thereof can be increased, with the ensuing increase of the internal volume available for the food substance and for the interaction thereof with the process liquid.
    [0018] According to an aspect of the invention, the annular centring rib is interrupted by at least one radial opening suitable to place the annular interspace in communication with the external.
    [0019] In this manner, the annular centring rib does not provide any type of sealing for the reception seat, whose airtightness remains solely provided by the annular sealing lip. The presence of at least one radial opening has the further advantage of slightly increasing the flexibility of the centring rib in the radial direction, thus facilitating the coupling thereof with the axial end of the jacket which delimits the reception seat.
    [0020] Another aspect of the invention provides for that the aforementioned radial opening can be defined by an empty space which extends axially from a vacant edge of the annular centring rib to the annular flange.
    [0021] This aspect of the invention provides for a solution that is particularly simple for obtaining the radial opening.
    [0022] Preferably, the annular centring rib comprises only one radial opening, substantially taking a C-like shape.
    [0023] Thanks to this solution, the annular centring rib is sufficiently robust to guarantee an efficient centring of the capsule and to reduce the risk of being damaged during the manufacturing, the transportation and the use of the capsule.
    [0024] According to an aspect of the invention, the annular centring rib can have a substantially rectangular-shaped cross-section.
    [0025] The expression cross-section is generally used to indicate a section carried out with a section plane containing the axis of the centring rib, or the longitudinal axis of the lateral wall of the capsule.
    [0026] This form of cross-section has the effect of conferring to the centring rib a high rigidity in the axial direction, increasing the robustness thereof as well as the capacity of an effective centring.
    [0027] According to different aspect of the invention, the annular sealing lip can have a vacant axial edge suitable to be compression-deformed by said axial end of the jacket of the reception seat.
    [0028] In this manner, when the capsule is sealed in the reception seat of the machine and, the annular sealing lip is compressed and pressed against the axial end of the jacket of the reception seat, guaranteeing a better airtightness.
    [0029] As regards this, an aspect of the invention provides for that the annular sealing lip can have a tapered-shaped cross-section which narrows moving away from the annular flange.
    [0030] This solution advantageously allows increasing the compression-like deformability of the annular sealing lip.
    [0031] Another aspect of the invention provides for that the cross-section of the annular sealing lip can have a side which extends orthogonally with respect to the annular flange and which is faced towards the annular centring rib.
    [0032] In this manner, during the compression, the annular sealing lip tends to be deformed always bending in the same direction, in particular towards the annular centring rib, thus improving the airtightness of the reception seat.
    [0033] According to a further aspect of the invention, the lateral wall of the container body of the capsule can be tapered-shaped narrowing moving away from the annular flange, for example but not necessarily a substantially frusto-conical shaped.
    [0034] This solution makes the insertion and centring of the cap in the reception seat advantageously simpler.
    [0035] Another aspect of the invention provides for that the container body of the capsule can be made of plastic, for example but not exclusively made of polylactic acid (PLA). Thanks to this solution, the capsule is very economic and it can advantageously be obtained in large quantities.
    [0036] For example, the container body of the capsule can be obtained by means of thermoforming.
    [0037] This embodiment has the advantage of allowing high production with relatively low costs.
    [0038] Another aspect of the invention provides for that the annular centring rib and the annular sealing lip can be made of a single body with the annular flange, which is in turn preferably made of a single body with the lateral wall of the container body.
    [0039] Thanks to this solution, the container body of the capsule can be advantageously obtained as an entirety, in a relatively simple and economic manner. Brief description of the drawings
    [0040] Further characteristics and advantages of the invention will be apparent from reading the following description - provided by way of non-limiting example - with reference to the figures illustrated in the attached drawings.Figure 1 is a bottom view of a capsule according to an embodiment of the present invention. Figure 2 is section II-II of figure 1. Figure 3 is the detail III of figure 2 shown in enlarged scale. Figure 4 is the detail IV of figure 1 shown in enlarged scale. Figure 5 shows the coupling of the capsule of figure 2 in the extraction unit of a machine for preparing beverages. Figure 6 is the detail VI of figure 5 shown when the extraction unit is in closed position. Detailed description
    [0041] The aforementioned figures show a capsule 100, typically a disposable capsule, for preparing beverages, for example hot beverages such as coffee, tea, infusions or the like.
    [0042] In particular, the capsule 100 is suitable to contain a dose of a food substance, for example but not necessarily powder coffee, which is suitable to obtain the aforementioned beverage by interacting with the process liquid, typically water.
    [0043] Preferably, the process liquid is a hot liquid, i.e. heated at a temperature above the room temperature.
    [0044] The interaction between the food substance and the process liquid can for example be an infusion, a percolation or a solubilisation.
    [0045] In any case, in order to allow the preparation of the beverage, the capsule 100 is intended to be inserted into a special machine (not fully illustrated in the attached figures). This machine comprises an extraction unit 300 (see fig. 5), which is generally configured for injecting the process liquid, typically at a pressure above the atmospheric pressure, in the capsule 100 and allow the outflow of the beverage thus obtained.
    [0046] The extraction unit 300 may comprise a seat 305 for receiving the capsule 100 and an abutment body 310 suitable to block the capsule 100 in said reception seat 305.
    [0047] The reception seat 305 can be delimited by a substantially tubular-shaped jacket 315, for example cylindrical or frusto-conical, which extends, for example with axially symmetric geometry, around a pre-set longitudinal axis A.
    [0048] An axial end 320 of the jacket 315 can be vacant, leaving the reception seat 305 open, while the opposite axial end can be closed by a bottom wall 325.
    [0049] The bottom wall 325 can be obtained as a single body with the jacket 315, basically obtaining a substantially drinking-glass-shaped single body.
    [0050] The abutment body 310 is positioned along the longitudinal axis A and it is faced to the vacant axial end 320 of the jacket 315, so as to be able to close the reception seat 305. Preferably, the abutment body 310 and the jacket 315 are mutually moveable in the direction parallel to the longitudinal axis A, between a closing position, in which the abutment body 310 is arranged at the vacant axial end 320 of the jacket 315, and an opening position, in which the abutment body 310 is spaced with respect to the vacant axial end 320 of the jacket 315, to allow the insertion and the removal of the capsule 100. The relative displacement between the closing and opening position can be obtained by means of special displacement members which are actuated manually.
    [0051] As illustrated in figures 1 and 2, the capsule 100 comprises a container body 105, which can for example be drinking-glass-like shaped and it is suitable to contain a dose of the food substance.
    [0052] The container body 105 can be made of plastic, for example but not necessarily polylactic acid (PLA).
    [0053] Preferably, the container body 105 is obtained by means of thermoforming, but it cannot be rules out that it can be obtained through other plastic material forming and/or moulding processes.
    [0054] More in detail, the container body 105 may comprise a substantially tubular-shaped lateral wall 110, for example cylindrical or frusto-conical, which extends, for example with axially symmetric geometry, around a pre-set longitudinal axis X.
    [0055] The lateral wall 110 delimits an inner cavity 115, which can be opened at a vacant axial end 120 of the lateral wall 110, while, at the opposite axial end, it can be closed by a bottom wall 125.
    [0056] Preferably, the bottom wall 110 has a shape at least slightly tapered along the longitudinal axis X, for example frusto-conical, which narrows progressively starting from the vacant axial end 120 towards the bottom wall 125.
    [0057] The bottom wall 125 can be obtained as a single body with the lateral wall 110.
    [0058] In the attached figures, the bottom wall 125 is illustrated - by way of example - as a continuous and solid wall.
    [0059] However, in other embodiments, the bottom wall 125 could be drilled, for example at a central portion thereof, and these holes could be sealed by means of a removable or drillable sealing film, for example aluminium, which would be fixed by means of gluing or sealing on the outer side of the bottom wall 125.
    [0060] On the opposite side with respect to the bottom wall 125, the vacant axial end 120 of the lateral wall 110 basically defines an entrance of the container body 105.
    [0061] At this entrance, the container body 105 can comprise an annular flange 130.
    [0062] The annular flange 130 can be obtained as a single body with the lateral wall 110 and derive from the vacant axial end 120.
    [0063] Preferably, the annular flange 130 extends in the radial direction starting from the vacant axial end 120 of the lateral wall 110 towards the external of the container body 105, or moving away with respect to the longitudinal axis X of the latter.
    [0064] The annular flange 130 may also extend circumferentially along the entire perimeter of the vacant axial end 120 of the lateral wall 110.
    [0065] As illustrated in the detail of figure 3, the annular flange 130 comprises an upper face 135 facing towards the bottom wall 125 and a juxtaposed upper face 140 facing in the opposite direction, which preferably lie on planes orthogonal to the longitudinal axis X. On the upper face 140 there can be applied a removable or drillable sealing film 145 which is suitable to seal the food substance in the container body 105.
    [0066] The sealing film 145 can for example be made of aluminium, or any other appropriate material, and it can be fixed to the upper face 140 of the annular flange 130 by gluing or heat-sealing.
    [0067] The capsule 100 further comprises an annular centring rib 150, which projects axially and is derived from the lower face 135 of the annular flange 130.
    [0068] In particular, the annular centring rib 150 can be obtained as a single body with the annular centring rib 130.
    [0069] The annular centring rib 150 extends concentrically, or coaxially, with the lateral wall 110, alongside which it defines a narrow annular interspace 155.
    [0070] The maximum diameter, the minimum diameter and the width of this annular interspace 155, measured in the radial direction with respect to the longitudinal axis X, are substantially equal to the maximum diameter, the minimum diameter and the width, measured in the radial direction with respect to the longitudinal axis A, of the jacket 315 which delimits the reception seat 305 of the extraction unit 300, at least at the vacant axial end 320.
    [0071] The cross-section of the annular centring rib 150, i.e. the section carried out with respect to a section plane containing the longitudinal axis X, can be substantially rectangular-shaped.
    [0072] For example, said cross-section may have two sides parallel to the longitudinal axis X and two orthogonal sides (one of which is connected to the lower face 135 of the annular flange 130), where the parallel sides can be longer than the orthogonal sides.
    [0073] As illustrated in figures 1 and 4, the annular centring rib 150, in the circumferential direction, can be fully continuous but it can also be interrupted in at least one section.
    [0074] In other words, the annular centring rib 150 may have at least one radial opening 160, which is suitable to place the annular interspace 155 in communication with the external.
    [0075] For example, said radial opening 160 can be defined by an empty space which, like some sort of groove, extends axially from one vacant axial edge of the annular centring rib 150, or from the end edge that is closest to the bottom wall 125, up to the lower face 135 of the annular flange 130.
    [0076] Preferably, the annular centring rib 150 has only one of these radial openings 160, so as to be interrupted only in one section, thus taking a substantially C-like shape, or the shape of an open ring.
    [0077] For example, with reference to the longitudinal axis X, the annular centring rib 150 can continuously extend for an angle comprised between 345° and 355°, for example approximately equal to 350°, while the radial opening 160 may have a corresponding angular extension comprised between 5° and 15°, for example approximately equal to 10°. The capsule 100 further comprises an annular sealing lip 165, which projects axially and also derives from the lower face 135 of the annular flange 130, preferably projecting into the space comprised between the lateral wall 110 and the annular centring rib 150, or in the annular interspace 155.
    [0078] In particular, the annular sealing lip 165 can be obtained as a single body with the annular flange 130.
    [0079] The annular sealing lip 165 extends concentrically, or coaxially, with the lateral wall 110. The cross-section of the annular sealing lip 165, i.e. the section carried out with respect to a section plane containing the longitudinal axis X, can have a tapered shape which narrows moving away from the lower face 135 of the annular flange 130 and terminates at a vacant axial edge 170.
    [0080] For example, the cross-section of the annular sealing lip 165 can be triangular-shaped. Furthermore, it is preferable that the cross-section of the annular sealing lip 165 has a side 175 which extends orthogonally with respect to the lower face 135 of the annular flange 130 and which faces towards the annular sealing lip 150.
    [0081] However, it cannot be ruled out that, in other embodiments, the cross-section of the annular sealing lip 165 can be trapezoidal-shaped, rectangular shaped or otherwise-shaped.
    [0082] At the lower face 135 of the annular flange 130, the width of the annular sealing lip 165, in radial direction with respect to the longitudinal axis X, can be substantially equal to that of the annular centring rib 150.
    [0083] In the axial direction, the height of the annular sealing lip 165 with respect to the lower face 135 of the annular flange 130 can be instead at least slightly smaller than the height, in the same direction, of the annular centring rib 150.
    [0084] In the circumferential direction, the annular sealing lip 165 is lastly preferably continuous for the entire extension thereof (i.e. it extends for 360° around the longitudinal axis X). The capsule 100 can further comprise an annular rib 180 which extends, coaxially with the lateral wall 110, along the entire outer perimeter of the annular flange 130, also projecting in the axial direction with respect to the lower face 135.
    [0085] The annular rib 180 can be obtained as a single body with the annular flange 130 and it can have a substantially trapezoidal-shaped cross-section.
    [0086] As illustrated in figure 5, when the capsule 100 is inserted into the reception seat 305, the lateral wall 110 of the container body 105 is fitted into the jacket 315 of the extraction unit 300, with the lower face 135 of the annular flange 130 facing towards the vacant axial end 320 of the jacket 315.
    [0087] Following this insertion, also exploiting the tapering of the lateral wall 110 of the capsule 100, the vacant axial end 320 of the jacket 315 is received, substantially fittingly (i.e. without clearance or with minimum clearance), in the annular interspace 155 defined between the lateral wall 110 and the annular centring rib 150 of the annular flange 130 (see fig. 6).
    [0088] Basically, the inner and outer side of the jacket 315, at the vacant axial end 320, are substantially at contact respectively with the lateral wall 110 and with the annular centring rib 150 of the capsule 100.
    [0089] In this manner, the container body 105 of the capsule 100 is perfectly centred in the jacket 315 which delimits the reception seat 305, with the respective longitudinal axes A and X which are substantially coincident with respect to each other.
    [0090] In this position, the annular sealing lip 165 of the capsule 100 is also arranged substantially resting and at contact against the vacant axial end 320 of the jacket 315.
    [0091] At this point, the abutment body 310 is brought to the closing position, pressing the capsule 100 in the reception seat 305 and, thus, the annular flange 130 against the vacant axial end 320 of the jacket 315.
    [0092] In this manner, the vacant axial edge 170 of the annular sealing lip 165 is compressed and deformed, guaranteeing an airtight sealing of the reception seat 305 (see fig. 6). Simultaneously, the extraction unit 300 can be equipped with drilling means 350 suitable to drill the sealing film 145 and possibly the bottom wall 125 of the capsule 100 too. These drilling means 350 may for example comprise one or more tips respectively fixed to the abutment body 310 and to the bottom wall 325 of the reception seat 305.
    [0093] The extraction unit 300 may also be connected with means (not illustrated) for supplying the process liquid, for example to a pump connected with a tank.
    [0094] For example, these supply means can be in communication with channels 355 obtained in the drilling tips of the abutment body 310, so that the process liquid can enter into the capsule 100 flowing through the holes obtained in the sealing film 145.
    [0095] Lastly, the beverage obtained from the interaction of the process liquid with the food substance can flow out from the holes obtained in the bottom wall 125 of the capsule 100 and flow outside the extraction unit 300, for example through several channels 360 obtained in the bottom wall 125 of the reception seat 305.
    [0096] Obviously, capsule described above, same case applying to the extractor machine and the relative operating methods could be subjected - by a man skilled in the art - to numerous technical/application modifications, without departing from the scope of protection of the invention as claimed below.
    权利要求:
    Claims (10)
    [0001] A capsule (100) for preparing beverages by inserting the capsule (100) into a reception seat (305) of a machine suitable to dispense a process liquid in the capsule (100), wherein said capsule (100) comprises:
    - a container body (105) suitable to contain a dose of a food substance suitable to obtain the beverage by interacting with the process liquid, which is shaped like a drinking-glass and is provided with a generally tubular-shaped lateral wall (110),
    - an annular flange (130) concentrically derived from an axial end of said lateral wall (110) and radially projecting towards the external of the container body (105),
    - an annular centring rib (150) axially deriving from the annular flange (130), which is concentric to the lateral wall (110) of the container body (105) and it is separated from the same by an annular interspace (155) suitable to receive, substantially fittingly, an axial end (320) of a substantially tubular jacket (315) that delimits the reception seat (305) of the machine, so as to centre the capsule (100) in said reception seat(305), and
    - an annular sealing lip (165) axially deriving from the annular flange (130) and projecting into said interspace (155), which is suitable to be compressed by said axial end (320) of the jacket (315) of the reception seat (305) to obtain a sealing.
    [0002] A capsule (100) according to claim 1, wherein the annular centring rib (150) is interrupted by at least one radial opening (160) suitable to place the annular interspace (155) in communication with the external.
    [0003] A capsule (100) according to claim 2, wherein said radial opening (160) is defined by an empty space which extends axially from a vacant edge of the annular centring rib (150) to the annular flange (130).
    [0004] A capsule (100) according to claims 2 or 3, wherein the annular centring rib (150) comprises only one radial opening (160), substantially taking a C-like shape.
    [0005] A capsule (100) according to any one of the preceding claims, wherein the annular centring rib (150) has a substantially rectangular-shaped cross-section.
    [0006] A capsule (100) according to any one of the preceding claims, wherein the annular sealing lip (160) has a vacant axial edge (170) suitable to be compression-deformed by said axial end (320) of the jacket (315) of the reception seat (305).
    [0007] A capsule (100) according to any one of the preceding claims, wherein the annular sealing lip (165) has a tapered-shaped cross-section which is narrowed moving away from the annular flange (130).
    [0008] A capsule (100) according to claim 7, wherein the cross-section of the annular sealing lip (165) has a side (175) which extends orthogonally with respect to the annular flange (130) and which is faced towards the annular centring rib (150).
    [0009] A capsule (100) according to any one of the preceding claims, wherein the container body (105) is made of plastic.
    [0010] A capsule (100) according to claim 9, wherein the container body (105) is obtained by means of thermoforming.
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    IT201900003101A1|2020-09-04|
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