WO2020058791A1 - Capsule pour la préparation de boissons avec joint d'étanchéité amélioré - Google Patents

Capsule pour la préparation de boissons avec joint d'étanchéité amélioré Download PDF

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Publication number
WO2020058791A1
WO2020058791A1 PCT/IB2019/057432 IB2019057432W WO2020058791A1 WO 2020058791 A1 WO2020058791 A1 WO 2020058791A1 IB 2019057432 W IB2019057432 W IB 2019057432W WO 2020058791 A1 WO2020058791 A1 WO 2020058791A1
Authority
WO
WIPO (PCT)
Prior art keywords
capsule
collar
accordance
protrusion
cavity
Prior art date
Application number
PCT/IB2019/057432
Other languages
English (en)
Inventor
Matteo SCHENONE
Original Assignee
Bisio Progetti S.P.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bisio Progetti S.P.A. filed Critical Bisio Progetti S.P.A.
Publication of WO2020058791A1 publication Critical patent/WO2020058791A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
    • B65D85/8043—Packages adapted to allow liquid to pass through the contents

Definitions

  • the object of the present invention is a single-dose capsule for the preparation of infusion or soluble beverages in an extraction device, comprising in particular an edge with an improved sealing profile.
  • the known type of capsules comprise a cup, usually made of plastic material, equipped with a circular perimeter edge adapted to obtain a sealed engagement with a relevant abutment edge of the infusion chamber, so as to make the infusion operation more efficient by limiting the dispersion of hot water outside of the same infusion chamber.
  • the object of the present invention is to make a capsule that overcomes the drawbacks mentioned above.
  • Figure 1 shows a cross-sectional view of a capsule according to the present invention, inserted into an extraction device
  • Figure 2 shows an axonometric view of the capsule according to the present invention
  • FIG. 3 shows a sectional view of a detail of the capsule according to the present invention, in particular an enlargement of the perimeter edge of the cup,
  • Figures 4a-4c show the same magnification of the perimeter edge of the cup shown in Figure 3, wherein the capsule has been inserted into the extraction device, thus showing the forward movement in closing of the abutment edge of the infusion chamber onto the perimeter edge of the capsule to obtain the seal.
  • Figure 1 shows a capsule 10 in accordance with the invention inserted in an infusion chamber 3 of an extraction device for the preparation of beverages.
  • Figure 2 shows only the capsule 10, of the single ⁇ dose type, for the preparation of a beverage, for example coffee, infusion, decoction or similar.
  • the capsule 10 comprises a hollow body called a cup 1, which contains therein a compartment for the containment of at least one substance to be infused or extracted by means of a liquid under pressure, such as coffee or tea, typically in granular or powder form.
  • a liquid under pressure such as coffee or tea
  • the cup 1 comprises an annular side wall 2, which extends in height along a central axis X, between a bottom wall 4 and an opposite front end 6 defining an opening 5.
  • This opening 5 is covered by a cover 8, which is pierceable or yielding, which closes the capsule 1.
  • the side wall 2 has on the outside a substantially frustoconical shape, for example formed by the succession of frustoconical surfaces with different angular openings.
  • the bottom wall 4 is intended to be penetrated by the liquid injected by the extraction device for the preparation of the beverage, typically hot water or other liquid food, such as milk.
  • the bottom provides weakened portions suitable for tearing when the capsule is in use, so as to make passages for the liquid into the cup.
  • the bottom is equipped with through holes that form passages for the liquid to the inside of the cup.
  • the capsule is of the open type.
  • the bottom is equipped with through holes that make passages for the liquid to the inside of the cup, covered with a film that may be pierced or torn by piercing means of the extraction device.
  • the cup 1 At the front end 6, the cup 1 comprises a collar 7, typically arranged at the free end of side wall 2, protruding radially externally.
  • the collar 7 has a front face 7b facing the opening
  • the front face 7b of the collar 7 is intended to join with the peripheral annular region of the cover 8 which closes the cup 1 at the front end 6.
  • the rear face 7a of the collar 7 is instead intended to engage with an abutment edge of the infusion chamber of the extraction device.
  • the extraction device comprises an infusion chamber 3 adapted to house therein at least part of the cup 1 of the capsule 1.
  • the infusion chamber 3 is movable relative to a receiving plate 38 between an open position, which allows the insertion and removal of the capsule 1, and a closed position.
  • a receiving plate 38 When the infusion chamber 3 is in the closed position, as shown in Figure 1, it obtains a closed chamber around the capsule 1 when the heated and pressurized water is fed into said capsule 1 (through the bottom 4) to carry out the infusion and extraction phase of the beverage.
  • the receiving plate 38 has at least one opening (not shown) to allow the beverage to flow into the final container, for example a coffee cup.
  • the infusion chamber 3 is equipped with a compression edge 31 having an outer portion 31a facing the rear face 7a of the collar 7 of the capsule 1.
  • the compression edge 31 is of the double crown type and comprises two circular crowns (defining an inner edge 32 and an outer edge 33) connected by an annular recess 34. Note that only the inner edge 32 is used to seal the infusion chamber by abutting against the rear face 7a of the collar 7 of the capsule.
  • the outer edge 33 is shorter than the inner edge 32 and does not compress the collar 7 of the capsule or part thereof.
  • the compression edge 31 is a single circular crown type that defines an inner edge 32 used to seal the infusion chamber by abutting against the rear face 7a of the collar 7 of the capsule.
  • the rear face 7a of the collar 7 is thus intended to engage with the inner edge 32 of the infusion chamber 3 of the extraction device to seal the infusion chamber.
  • the rear face 7a comprises a sealing ring 90 in the form of a circular crown.
  • the sealing ring 90 is in effect intended to engage sealingly with the inner edge 32 of the infusion chamber 3 of the extraction device.
  • the sealing ring 90 forms a head seal with the inner edge 32.
  • the sealing ring 90 due to the characteristics of the material and the structural and dimensional characteristics, is deformable under the action of compression of the inner edge 32 of the machine in order to obtain the seal; typically, given the compression action of the inner edge 32 and the heating of the material of the ring 90 during the use of the capsule 1, the deformation is of a plastic type.
  • the sealing ring 90 comprises an annular sealing protrusion 9, which extends substantially vertically relative to the collar 7.
  • the protrusion 9 defines, together with the side wall 2 of the cup 1, an annular cavity 11.
  • This cavity 11 is a sealing groove intended to engage sealingly with the inner edge 32 of the infusion chamber 3 of the extraction device .
  • the sealing ring 90 further comprises an annular raised sealing part 95, which extends substantially horizontally relative to the collar 7.
  • the raised part 95 is interposed between the protrusion 9 and the side wall
  • the raised part 95 forms the bottom of the cavity 11.
  • the sealing ring 90 essentially divides the rear face 7a of the collar 7 into two parts.
  • the sealing ring 90 thus divides the rear face 7a of the collar 7 into two non-coplanar parts. As shown in Figure 3, in effect, the thickness B of the collar 7 within the annular cavity 11 is greater than the thickness A of the collar 7 outside of the annular cavity 11.
  • the presence of the raised part 95 allows the depth of the sealing cavity 11 to be reduced and thus the sealing of the infusion chamber to be completed sooner ( Figure 4C) .
  • the stroke required at the inner edge 32 to abut against the bottom 94 of the sealing cavity 11 is shortened.
  • the thickness A of the collar 7 outside of the annular cavity 11 is in the range between 0.3 and 0.9 mm, preferably between 0.5 and 0.7 mm, even more preferably is 0.6 mm.
  • the thickness B of the collar 7 within the annular cavity 11 is in the range between 0.7 and 1.3 mm, preferably between 0.9 and 1.1 mm, and even more preferably is 1.0 mm.
  • the protrusion 9 is a circumferentially continuous circular crown.
  • the protrusion 9 has an inclined side 91 facing the side wall 2 of the cup 1, i.e., toward the inside of the annular cavity 11.
  • the inclined side 91 is inclined relative to the vertical plane Y, defined as the plane parallel to the axis X of the capsule and orthogonal relative to the plane P of the collar 7.
  • the angle is in the range between 5 and 9 degrees, preferably between 7 and 9 degrees, more preferably is 9 degrees .
  • the inclined side 91 is regular, i.e., it has a planar shape as shown in Figure 3.
  • the inclined side 91 may be concave or convex.
  • the protrusion 9 is at least partially plastically deformable.
  • the protrusion 9 is plastically deformable at least on the inclined side 91.
  • the protrusion 9 has an inclined side 91, facing the inside of the nearly vertical annular cavity 11, (i.e., inclined at an angle in the range between 5 and 9 degrees) .
  • This makes it possible to obtain an initial seal of the infusion chamber ( Figure 4B) sooner.
  • the inclined side 91 being almost vertical, the protrusion 9 comes immediately into contact with the inner edge 32 and, starting from the top 92, obtains a sealing effect.
  • the protrusion 9 has a trapezoidal cross-section. It is therefore possible to define, in addition to the inclined side 91, a planar top 92.
  • the protrusion 9 is also plastically deformable at the top 92.
  • the protrusion 9 has a top 92 large enough to compensate for any misalignment of the capsule 1 within the infusion chamber, i.e., to compensate for different positions of the compression edge 31 of the extraction device when closing the infusion chamber.
  • HS is defined as the height of the protrusion 9 measured from the plane P of the collar 7.
  • the height HS of the protrusion 9 is comprised in the range between 0.6 and 1.2 mm, preferably between 0.8 and 1 mm, even more preferably is 0.9 mm.
  • HR is defined as the height of the raised part 95 measured from the plane P of the collar 7.
  • the height HR of the raised part 95 is comprised in the range between 0.1 and 0.7 mm, preferably between 0.3 and 0.6 mm, even more preferably is 0.4 mm.
  • HT is also defined as the seal height of the protrusion 9 measured from the plane PT of the collar 7; this height corresponds to the depth of the cavity 11.
  • the height HT of the protrusion 9 is comprised in the range between 0.2 and 0.8 mm, preferably between 0.4 and 0.7 mm, even more preferably is 0.5 mm.
  • L is defined as the width of the protrusion 9 measured at the top 92 thereof.
  • the width L is in the range between 0.1 and 0.8 mm, preferably between 0.2 and 0.4 mm.
  • LM is defined as the maximum width of the sealing cavity 11, measured as the distance between the protrusion 9 (at the top 92 thereof) and the side wall 2 of the cup 1. [0059] The maximum width LM of the sealing cavity 11 is less than the thickness W of the inner edge 32 of the infusion chamber 3 of the extraction device.
  • the maximum width LM of the sealing cavity 11 is in the range between 1.2 and 0.5 mm, preferably between 0.8 and 0.9.
  • LI is moreover defined as the smaller width of the sealing cavity 11, measured as the distance between the protrusion 9 (at the bottom 94 of the cavity 11) and the side wall 2 of the cup 1.
  • the smaller width LI of the sealing cavity 11 is in the range between 0.3 and 1 mm, preferably between 0.6 and 0.7.
  • the protrusion 9 is made of the same material as the collar 7 and preferably is integral with the collar 7.
  • the protrusion 9 is made of a material different from that of the collar 7.
  • the cup 1 of the capsule 10 is obtained by thermoforming.
  • the cup is made from a multilayer sheet comprising an inner barrier-type layer, and at the side edge of the collar 7 this inner layer emerges .
  • the inner layer is an oxygen barrier layer and is made of ethylene vinyl alcohol (EVOH) material .
  • EVOH ethylene vinyl alcohol
  • the multilayer sheet is of the type PP/EVOH/PP wherein the polypropylene (PP) forms the outer layers of the sheet.
  • At least one outer layer of the multilayer sheet is made of polyethylene (PE) , and this layer forms the rear face 7a of the collar 7, which is intended to engage with an abutment edge of the infusion chamber of the extraction device.
  • PE polyethylene
  • the multilayer sheet is of the PP/EVOH/PP/PE type.
  • the capsule 1 according to the present invention is inserted into the infusion chamber 3 of the extraction machine (figure 4A) and, once the movement of the components of the same machine has been activated, the rear face 7a of the collar 7 of the capsule 1 engages with the compression edge 31 of the infusion chamber 3 to obtain a closed chamber around the capsule 1 and carry out the infusion and extraction phase of the beverage.
  • the compression edge 31 of the machine in its forward path, will assuredly touch the top 92 of the protrusion 9 ( Figure 4B) , designed to be wide enough to compensate for different positions of the compression edge 31.
  • This engagement involves obtaining an initial seal, at least partial, of the infusion chamber.
  • the compression edge 31 of the machine will touch the inclined side 91 of the protrusion 9 and will be pushed thereby towards the inside of the cavity 11.
  • the compression edge 31 immediately comes into contact with the protrusion 9, thus obtaining the seal of the infusion chamber sooner.
  • the seal is obtained by the top 92 and by the inclined side 91 of the protrusion 9, by the raised part 95 and by the side wall 2.
  • the inner compression edge 32 is completely enclosed within the cavity 11 of the sealing ring 9, which is deformed plastically to obtain the necessary seal to prevent any leakage of liquid from the infusion chamber.
  • the geometry of the sealing ring 90 reduces the stroke required at the compression edge 31 (and in particular at the inner edge 32) to obtain the seal of the infusion chamber.
  • a sealing ring 90 comprising a protrusion 9 provided with an inclined "almost vertical" side facing the sealing cavity 11 and a wide planar top 92 allows the different paths of movement of the receptacles in different infusion devices to be compensated.
  • the capsule 1 is equipped with a collar 7 equipped with a sealing ring 90 shaped so as to be compressed by the compression edge 31 of the machine from the beginning of the feed path thereof towards the closure of the infusion chamber.
  • the capsule according to the present invention overcomes the drawbacks mentioned with reference to the prior art, as it allows a reliable seal to be made while maintaining a geometry that is constructively easy to obtain.
  • the capsule according to the present invention may be used in different types of extraction machines as it is equipped with a sealing ring 90 that compensates for any inaccuracies in the closure of the abutment edge of the infusion chamber on the collar of the capsule.
  • the capsule according to the present invention guarantees an effective seal while maintaining a simple geometry from the constructive point of view.
  • the capsule according to the present invention is easily obtainable through a thermoforming process .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Making Beverages (AREA)

Abstract

L'invention concerne une capsule (10) pour la préparation de boissons dans un dispositif d'extraction comprenant une coupelle (1) présentant une paroi latérale (2) et un collier (7) doté d'une bague d'étanchéité (90) conçue pour venir en prise de manière étanche avec un bord de compression du dispositif d'extraction. La bague d'étanchéité (90) comprend une saillie (9) qui définit, avec la paroi latérale (2), une cavité d'étanchéité (11), et est dotée d'un côté (91) incliné selon un angle (a) entre 5 et 9 degrés. La bague d'étanchéité (90) comprend en outre une partie surélevée (95), interposée entre la saillie (9) et la paroi latérale (2), qui forme le fond de la cavité (11) de sorte que l'épaisseur du collier (7) à l'intérieur de la cavité (11) est supérieure à l'épaisseur du collier (7) à l'extérieur de la cavité (11). La partie surélevée (95) et le côté (91) sont plastiquement déformables pour obtenir un joint d'étanchéité. Avantageusement, la géométrie de la bague d'étanchéité (90) réduit la course requise pour que le bord de compression (31) obtienne le joint d'étanchéité de la chambre d'infusion du dispositif d'extraction.
PCT/IB2019/057432 2018-09-18 2019-09-04 Capsule pour la préparation de boissons avec joint d'étanchéité amélioré WO2020058791A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT201800008684 2018-09-18
IT102018000008684 2018-09-18

Publications (1)

Publication Number Publication Date
WO2020058791A1 true WO2020058791A1 (fr) 2020-03-26

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PCT/IB2019/057432 WO2020058791A1 (fr) 2018-09-18 2019-09-04 Capsule pour la préparation de boissons avec joint d'étanchéité amélioré

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013132435A1 (fr) * 2012-03-05 2013-09-12 Macchiavelli S.R.L. Capsule pour produits d'infusion
WO2015075584A1 (fr) * 2013-11-08 2015-05-28 Caffitaly System S.P.A. Capsule et système de fabrication de boissons
WO2016067128A1 (fr) * 2014-10-29 2016-05-06 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Appareil et procédé permettant la fabrication d'une capsule pour des produits d'infusion
WO2016193842A1 (fr) * 2015-05-29 2016-12-08 Bacon, Brian Capsules permettant de contenir du café ou une autre substance pour l'extraction d'une boisson à l'aide d'eau chaude

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013132435A1 (fr) * 2012-03-05 2013-09-12 Macchiavelli S.R.L. Capsule pour produits d'infusion
WO2015075584A1 (fr) * 2013-11-08 2015-05-28 Caffitaly System S.P.A. Capsule et système de fabrication de boissons
WO2016067128A1 (fr) * 2014-10-29 2016-05-06 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Appareil et procédé permettant la fabrication d'une capsule pour des produits d'infusion
WO2016193842A1 (fr) * 2015-05-29 2016-12-08 Bacon, Brian Capsules permettant de contenir du café ou une autre substance pour l'extraction d'une boisson à l'aide d'eau chaude

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