EP3931128A1 - Capsule et système de préparation d'une denrée alimentaire liquide - Google Patents

Capsule et système de préparation d'une denrée alimentaire liquide

Info

Publication number
EP3931128A1
EP3931128A1 EP20706343.9A EP20706343A EP3931128A1 EP 3931128 A1 EP3931128 A1 EP 3931128A1 EP 20706343 A EP20706343 A EP 20706343A EP 3931128 A1 EP3931128 A1 EP 3931128A1
Authority
EP
European Patent Office
Prior art keywords
capsule
sealing lip
side wall
sealing
flange
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP20706343.9A
Other languages
German (de)
English (en)
Inventor
Olivia Kurtz
Raphael Gugerli
Roland Affolter
Martin Wüthrich
Christoph BRUNSCHWILER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delica AG
Original Assignee
Delica AG
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 Delica AG filed Critical Delica AG
Publication of EP3931128A1 publication Critical patent/EP3931128A1/fr
Pending legal-status Critical Current

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
    • B65D85/8064—Sealing means for the interface with the processing machine
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/40—Beverage-making apparatus with dispensing means for adding a measured quantity of ingredients, e.g. coffee, water, sugar, cocoa, milk, tea
    • A47J31/407—Beverage-making apparatus with dispensing means for adding a measured quantity of ingredients, e.g. coffee, water, sugar, cocoa, milk, tea with ingredient-containing cartridges; Cartridge-perforating means

Definitions

  • the present invention relates to a capsule and a system for the preparation of a liquid food.
  • the capsule is enclosed in a brewing chamber of the preparation machine, a capsule holder moving relative to a closure plate of the machine and forming a tight connection with the flange of the capsule.
  • the capsule receptacle can be seen on its side facing the flange of the capsule with grooves or grooves, which result in the course of use through wear or are deliberately provided by the machine manufacturer.
  • EP 1 654 966 A1, EP 1 849 715 A1 and EP 2 151 313 A1 disclose a capsule made of aluminum with a flange, a sealing element made of a different material being arranged on the flange.
  • the disadvantage of these capsules is that the additional material in production requires a further process step and thus makes the capsule more expensive. In addition, the recycling of the capsules is made considerably more difficult.
  • WO 2014/184652 A1 and WO 2014/184651 A1 describe a capsule which is severely deformed under the action of the enclosing element and whose area of the flange is even pulled around a front edge of an enclosing element of the brewing chamber. This deformation requires high forces to create a successful seal.
  • WO 2016/041596 A1 discloses a further capsule which has a sealing lip on its flange, the sealing lip to adapt to the contours of the enclosing element. Despite deformation of the sealing lip, no reliable sealing can be made.
  • a capsule and a system are to be made available which allow a simple and reliable seal between the capsule and the capsule holder of the machine.
  • the capsule should be easy and inexpensive to manufacture and the material of the capsule should be recyclable through recycling.
  • a capsule according to the invention for the preparation of a liquid food comprises a capsule body with a side wall and with a bottom, as well as a lid closing off the capsule body.
  • the capsule body is preferably rotationally symmetrical and / or frustoconical.
  • the side wall and the bottom can be formed in one piece.
  • the capsule body and the cover form a receiving space for receiving at least one substance for the preparation of the liquid food.
  • the capsule body has a circumferential flange-shaped edge with a sealing surface for sealingly connecting the lid to the capsule body. On a base of the circumferential edge opposite the sealing surface, a circumferentially projecting sealing lip is arranged for tight cooperation with a contact surface of a capsule receptacle of a preparation machine.
  • the sealing lip is hollow and has two legs which essentially form a right angle with the sealing surface of the flange-shaped edge.
  • the sealing lip points at least a height of 1.0 mm measured from the sealing surface of the flange-shaped edge.
  • the height is advantageously between 1.1 mm and 1.8 mm, preferably between 1.2 mm and 1.6 mm, particularly preferably between 1.3 mm and 1.4 mm.
  • the sealing lip is shaped and dimensioned in such a way that it can absorb at least a force of 500 N, preferably at least 650 N, particularly preferably at least 800 N, essentially without plastic deformation, and / or
  • the sealing lip has a width between 0.4 mm and 0.9 mm, preferably between 0.5 mm and 0.8 mm, particularly preferably between 0.6 mm and 0.7 mm, and / or
  • the sealing lip is arranged at a radial distance between 15.8 mm and 16.3 mm, preferably between 15.9 mm and 16.2 mm, particularly preferably between 16.00 mm and 16.15 mm, from a central axis of the capsule body.
  • a contact surface of a capsule receptacle is understood to mean that area of the capsule receptacle of a machine which, with a counterpart of the machine, clamps the capsule, in particular the flange-like edge of the capsule, and creates a tight connection between the capsule and the capsule receptacle through this clamping effect. It is therefore a front area of the capsule receptacle in the closing direction. With machines available today, this contact surface is partially radial extending grooves or grooves and can also have a groove running around.
  • An essentially right angle is understood to mean an angle in the range of 90 ° ⁇ 10 °, preferably ⁇ 8 °, particularly preferably ⁇ 7 °.
  • the force that hits the sealing lip is applied in the axial direction of the capsule and perpendicular to a highest edge of the sealing lip.
  • the tool for measuring the force should have a flat surface which runs perpendicular to the axial direction of the capsule.
  • a force-displacement diagram the load on the sealing lip can be plotted perpendicular to its highest point. It is characteristic of such an elastic deformation when the characteristic curve runs linearly at a force between 100 N and 500 N, preferably between 100 N and 650 N, particularly preferably between 100 N and 800 N. After the force has ceased to exist and the force-displacement diagram has been determined again, the new characteristic curve coincides with the previously recorded characteristic curve in the specified force range.
  • the width of the sealing lip is measured halfway between the highest point or the highest edge of the sealing lip and the sealing surface.
  • the radial distance between the sealing lip and the central axis of the capsule refers to the distance between the highest edge of the sealing lip and the central axis.
  • the design of the sealing lip as a hollow sealing lip allows for example a one-piece design of the flange-shaped edge, for example by deep-drawing a metallic material. Accordingly, the capsule can be manufactured inexpensively.
  • the alignment of the legs of the sealing lip essentially at a right angle to the sealing surface increases the stability of the sealing lip, so that it is not compressed or tilted away when a pressure is applied to the contact surface of the capsule receptacle.
  • the high force that can be absorbed by the sealing lip ensures that the sealing lip is not unnecessarily deformed and that no creases form as a result of the deformation, which would promote leakage.
  • the selected width of the sealing lip is advantageous because this width results in a stable construction in the area of the the highest edge can easily be realized by a radius of curvature.
  • this width is advantageous in machines with a capsule holder that has a circumferential groove.
  • the sealing lip can engage in this groove and be supported on both sides in the groove. Accordingly, two circumferential contact lines are formed, which optimize the sealing effect.
  • the radial distance between the sealing lip is selected so that it meets the contact surface of the capsule receptacle.
  • the radial distance is selected such that it corresponds approximately to a radius of the circumferential groove.
  • the sealing lip thus meets at least partially in the groove and optimizes the sealing effect by means of two circumferential contact lines.
  • the capsule body, the flange-shaped edge and the sealing lip can be designed in one piece.
  • inexpensive production of the capsule is made possible.
  • the capsule can be produced by sintering, injection molding, pressing or reshaping, in particular by deep drawing, thermoforming, internal or external high-pressure forming.
  • the sealing lip can be arranged at a radial distance between 0.4 mm and 0.9 mm, preferably between 0.5 mm and 0.75 mm, particularly preferably between 0.55 mm and 0.65 mm, from the side wall of the capsule body.
  • the distance between a virtual point of intersection between the side wall and the sealing surface and a virtual point of intersection between the inner leg of the sealing lip and the sealing surface is measured.
  • Such a dimensioning is advantageous if the capsule receptacle is designed to be thin-walled in its area in front of its area and thus has a narrow contact surface or if the capsule receptacle has a circumferential groove.
  • an area of the capsule would be received between the sealing lip and the side wall, which in turn forms two circumferential contact lines for improved sealing.
  • the sealing lip can have a round design at its highest point and in particular have a radius of curvature between 0.15 mm and 0.45 mm, preferably between 0.20 mm and 0.40 mm, particularly preferably between 0.25 mm and 0.35 mm.
  • a round design of the sealing lip stabilizes the construction and it increases the resistance to deformation. The radius is measured on the outside of the sealing lip at the highest point.
  • a round design prevents excessive wear of the capsule receptacle when it meets the sealing lip.
  • the rounding preferably extends from the highest point of the sealing lip into the area of the legs.
  • a rounding with a radius between 0.1 mm and 0.5 mm, preferably between 0.1 mm and 0.4 mm, particularly preferably between 0.1 mm and 0.3 mm, can be provided.
  • the radius between the inner limb and the base facing the side wall is preferably designed to be larger than the opposite radius between the outer limb and the base.
  • the rounding or the radius of curvature is measured on the side facing the sealing lip, ie the side facing away from the sealing surface.
  • the flange-shaped edge preferably has no further sealing contours.
  • the flange-shaped edge has exactly one sealing lip.
  • the design of only one sealing lip simplifies production, and the capsule can be produced inexpensively.
  • the sealing lip can be formed from a metal, in particular from aluminum or an aluminum alloy, or a laminate with at least one layer made from a metal, in particular from aluminum or an aluminum alloy.
  • the metal can be selected from the group comprising tinplate, chrome steel, titanium, aluminum, tin, copper, brass, or an alloy there of.
  • a laminate comprising several metal layers or a combination of plastic and metal layers is also conceivable.
  • the capsule can be manufactured with different materials or coated accordingly. Coatings can be applied, for example, by vapor deposition, enameling or anodizing. The most cost-effective variant can be selected in each case.
  • the material can have a material thickness of 0.1 mm ⁇ 0.05 mm, preferably ⁇ 0.03 mm, particularly preferably ⁇ 0.01 mm. Depending on the material chosen, the material thickness can vary in order to guarantee the required sealing effect. A thin material thickness reduces the material costs of the capsule.
  • the side wall of the capsule body can have a diameter of 30.1 mm ⁇ 0.2 mm, preferably ⁇ 0.1 mm, particularly preferably ⁇ 0.05 mm.
  • the diameter is based on a virtual
  • the diameter is preferably adapted to the inner diameter of the capsule receptacle of the machine.
  • an optimal fit can be achieved, which in conventional machines neither jams due to a tight fit nor wedges due to too much play.
  • an initial seal between see the side wall and inner diameter of the capsule holder made light and optimal centering of the capsule guaranteed.
  • the capsule body can have a height from the bottom to the sealing surface of the flange-shaped edge between 27.0 mm and 28.5 mm, preferably between 27.5 mm and 28.0 mm, particularly preferably between 27.8 mm and 27.9 mm.
  • the height is measured on the outside of the capsule. The suggested height is relevant to ensure that the capsule base is pierced correctly with conventional machines. If the capsule does not have the required height, insufficient perforation can follow, so that no or too little extraction fluid can be introduced into the capsule. If the capsule is too high, correct closure of the brewing chamber can be hindered, so that, in the worst case, a malfunction of the machine results.
  • the capsule body can essentially have the shape of a double truncated cone with a first cone angle of 60 ° ⁇ 5 °, preferably ⁇ 2 °, particularly preferably ⁇ 1 °.
  • the cone angle in the area adjacent to the bottom of the capsule is referred to as the first cone angle.
  • a second cone angle can be 6 ° ⁇ 5 °, preferably ⁇ 3 °, particularly preferably ⁇ 2 °.
  • the second cone angle is the cone angle in the area of the side wall.
  • the brewing chamber of a machine is provided with three or more piercing elements which pierce the bottom area of the capsule when the brewing chamber is closed.
  • the first cone angle now ensures that the capsule, which is not yet fixed in the capsule receptacle, is already aligned and is centered before the piercing elements Chen open the capsule.
  • the second cone angle is essentially adapted to the internal geometry of the capsule receptacle and also ensures further centering when closing.
  • the capsule body can have a bottom surface with a diameter of 10 mm ⁇ 1 mm, preferably ⁇ 0.5 mm, particularly preferably ⁇ 0.2 mm.
  • the diameter is measured on the ground at the corner point of the first cone angle.
  • the bottom surface, together with the first cone angle and the height of the capsule, ensures the correct position of the piercing elements in relation to the capsule body.
  • the side wall of the capsule body can have a stepped widening in the area near the base, the widening at a distance from the sealing surface in the direction of the central axis of 3.0 mm to 7.0 mm, preferably from 4.0 mm to 6.0 mm, particularly preferably 4.5 mm to 5.5 mm.
  • This expansion can include a change in the outside diameter between 0.1 mm and 2.0 mm, preferably between 0.3 mm and 1.0 mm, particularly preferably between 0.4 mm and 0.5 mm.
  • a widening of the capsule body near the flange-shaped edge improves the centering of the capsule in the capsule receptacle.
  • the correct interaction of the sealing lip with the contact surface of the capsule receptacle can be improved.
  • an initial seal is already produced between the side wall and the inside of the capsule receptacle.
  • a capsule according to the invention for the preparation of a liquid food in particular as described above, comprises a capsule body with a side wall and a base and a lid closing the capsule body to form a receiving space for receiving at least one substance.
  • the capsule body can be designed to be rotationally symmetrical and / or frustoconical.
  • the bottom can be formed in one piece with the Be tenwand.
  • the capsule has a circumferential flange-shaped edge with a sealing surface for the tight connection of the lid to the capsule body. On a base of the flange-shaped edge opposite the sealing surface, a protruding sealing lip is arranged for tight cooperation with a contact surface of a capsule holder of a preparation machine.
  • the sealing lip is hollow and has two legs which essentially form a right angle with the sealing surface of the flange-shaped edge.
  • a leg of the sealing lip directed towards the side wall of the capsule body has a radial distance from a central axis of the capsule body, this distance being essentially the same as a distance from an outer circumferential line with an inclination of 45 ° relative to the axis, one to the outside directed Maisflä surface of a capsule receptacle, to a central axis of the capsule receptacle.
  • a ratio of the distance between the leg sealing lip and the central axis to the distance between the outer circumference and the central axis is in a range from 0.90 to 1.10, preferably in the range 0.95 to 1.05, particularly preferably in the range 0.99 to 1.03.
  • the radial distance between the angle of the sealing lip directed towards the side wall and the central axis of the capsule is measured halfway between the highest point or the highest edge of the sealing lip and the sealing surface.
  • the design of the sealing lip as a hollow sealing lip allows, for example, a one-piece design of the flange-shaped towards the edge, for example by deep drawing a metallic material. Accordingly, the capsule can be manufactured inexpensively.
  • the alignment of the legs of the sealing lip essentially at a right angle increases the stability of the sealing lip, so that it is not compressed or tilted away when the contact surface of the capsule receptacle is subjected to a pressing force.
  • an outwardly directed contact surface of a capsule receptacle Through the selected positioning of the inner leg of the sealing lip in relation to an outer circumference with an inclination of 45 ° in relation to the axis, an outwardly directed contact surface of a capsule receptacle, it can be ensured that an outwardly directed contact surface with the inward directed leg of the sealing lip meets to develop a sealing effect.
  • the outwardly directed area of the contact surface within the groove can thus interact with the inwardly directed leg of the sealing lip.
  • the sealing lip can be arranged at a radial distance from the side wall of the capsule body, this distance being at least equal to a distance between the outer circumferential line and an inner circumferential line, defined by an inclination of 45 ° of an inwardly directed contact surface of a capsule receptacle is large, in particular by at least a factor 1.05, preferably by at least a factor 1.10 greater.
  • Sealing lip and the side wall are added, whereby two circumferential contact lines for improved sealing bil the.
  • the side wall of the capsule body can have a diameter which is a maximum of 1.5% smaller, preferably a maximum of 1.0% smaller, particularly preferably a maximum of 0.5% smaller than the diameter of a capsule receptacle.
  • the diameter of the capsule body is determined at a virtual intersection of the side wall with the sealing surface.
  • the diameter of the capsule receptacle is determined at a virtual intersection of its inner surface with a horizontal plane spanned by the opening of the capsule receptacle.
  • a fleece can be arranged in the area of the bottom of the capsule body.
  • the fleece is arranged between the capsule base and the substance.
  • uniform wetting of the substance enclosed in the capsule is thus promoted.
  • channel formation in the substance can be avoided.
  • turbulent flows can genes are broken and flow peaks smoothed.
  • the substance is evenly wetted, which is an important criterion for obtaining a high-quality drink, especially when extracting coffee.
  • the valve effect of the fleece ensures a uniform flow regardless of the size of the openings created by the piercing means.
  • the filling weight of the beverage substance in the capsule can be reduced for the same cup result.
  • a fleece prevents the penetration agent of a preparation machine from being contaminated with the substance and / or that substance can escape from the capsule through the puncture openings of the penetration agent after the capsule has been removed from the machine.
  • the capsule volume available for the beverage substance can be restricted by the fleece, which in turn can lead to an additional reduction of the beverage substance.
  • the fleece can be designed in such a way that it is not pierced by the penetration means of a preparation machine. The leakage of substance after removing the capsule from a machine is prevented.
  • the fleece can be fastened in an edge region of the capsule base. This reduces the risk that the penetration means of a preparation machine pierce the capsule base outside the fleece.
  • the fleece can be fastened over the entire surface or exclusively in the edge region of the capsule base, preferably following a circular path. If the attachment is not over the entire surface, the elasticity of the fleece allows a certain mobility. so that the pressure of the liquid flowing into the capsule moves the fleece in the direction of the interior of the capsule.
  • the fleece can also be pushed in the direction of the interior of the capsule under the action of the penetration means of the preparation machine. This reduces the free volume inside the capsule.
  • the substance in the capsule is accordingly more closely enclosed and the distribution of the substance is more even, regardless of the orientation of the capsule. In the case of a coffee capsule, this promotes the creation of a defined filter bed.
  • the reproducibility of the quality of the prepared food is increased even with a fluctuating and / or smaller substance volume.
  • the fleece can also be fastened to the side wall in the region of the transition from the side wall to the capsule base.
  • the fleece can comprise a swelling material.
  • the capsule volume is additionally reduced so that the substance is more closely enclosed. The result is an improved and more uniform quality of the prepared food.
  • the attachment of the fleece in the area of the capsule bottom or on the side wall can be done by a seal, preferably by a heat seal.
  • the seal has an outside diameter between 20.0 mm and 23.0 mm, preferably between 20.5 mm and 22.5, particularly preferably between 21.0 mm and 22.0 mm.
  • the inner diameter of the seal can be between 17.5 mm and 20.5 mm, preferably between 18.0 and 20.0 mm, particularly preferably between 19.0 mm and 20.0 mm.
  • the width of the seal is between 0.50 mm and 5.00 mm, preferably between 0.75 mm and 3.00 mm, particularly preferably between 0.75 mm and 1.75 mm.
  • the fleece can have an outside diameter which is greater than the outside diameter of the seal.
  • the edge of the fleece can lie against the side wall of the capsule body.
  • the tolerances for the sealing can thus be selected to be larger, which leads to a more favorable manufacturing process.
  • the sealing can take place all around along a closed curve. Likewise, the seal can be made in segments all around.
  • the width of the gap between two sealing areas should not be greater than 2.0 mm, preferably not greater than 1.5 mm, particularly preferably not greater than 1.0 mm.
  • the seal is preferably designed in such a way that the fleece does not become detached from the capsule body during preparation.
  • a partial detachment of the fleece is conceivable as long as the fleece reliably prevents substance from escaping from the openings in the capsule base created by the penetration means after preparation.
  • the fleece can be fastened in the region of the capsule bottom or on the side wall in such a way that a free distance is formed between the fleece and the capsule bottom.
  • the distance is in the range from 0.5 mm to 2.0 mm, preferably between 0.75 mm to 1.5 mm, particularly preferably 1.0 mm. Particularly in the case of a conical configuration of at least a portion of the capsule base, good mobility of the fleece can thus be guaranteed.
  • the fleece can have a grammage of 10.0 g / m 2 to 55.0 g / m 2 , preferably 12.5 g / m 2 to 28.0 g / m 2 .
  • the fleece is preferably not calendered and has no micro-perforations.
  • the fleece can have a dry thickness between 41 mpi and 180 mpi, preferably between 70 mpi and 100 mpi, particularly preferably between 75 mpi and 85 mpi.
  • the fleece can be equipped with sealing fibers, preferably made of polyethylene (PE).
  • the sealing fibers are preferably arranged on one side only.
  • the fleece is preferably a single layer. Accordingly, the layers cannot be separated during the preparation of the liquid food. The different design of the top and the bottom of the fleece must accordingly be taken into account during its production.
  • a further aspect of the present invention relates to a system comprising a capsule as described above and a capsule receptacle of a preparation machine, the sealing lip corresponding to a groove of the capsule receptacle in such a way that the sealing lip is received in the groove and is sealed with a contact surface of the capsule receptacle Connection enables.
  • the sealing lip and the groove can be matched to one another in such a way that when the capsule is enclosed between the capsule receptacle and a closure plate of the preparation machine, the sealing lip in the groove first touches a first side wall of the groove and is elastically deflected when it is further closed. until the sealing lip is supported on the second side wall of the groove opposite the first side wall. By touching or supporting both sides, an additional sealing contour is created and the sealing effect is improved. It can also be achieved that the sealing lip is only deformed laterally in the elastic area. Correspondingly, a higher locking force can be applied in order to further improve the sealing effect.
  • Figure 1 a cross section through a capsule according to the invention
  • Figure 2 an enlarged view of the area of
  • FIG. 3 the enlarged representation of the capsule according to FIG.
  • FIG. 4 the illustration according to FIG. 3, the capsule receptacle entering into a tight connection with the capsule
  • Figure 5 an illustration of a force-displacement diagram
  • FIG. 6 a cross section through a further embodiment of a capsule according to the invention
  • Figure 7 a schematic representation of the seal between
  • FIG. 1 shows a cross section through a capsule 1 according to the invention.
  • the capsule 1 comprises a capsule body 2 with a side wall 3 and a bottom 4.
  • the capsule body 2 has a circumferential flange-shaped edge 8 with a sealing surface 29 for attaching a lid 5.
  • the capsule 1 and is preferably closed aroma- and oxygen-tight, so that a substance 7 can be received in the interior of the capsule 1 and is enclosed by the capsule body 2 and cover 5.
  • the capsule body 2 is configured to be rotationally symmetrical and frustoconical, and the capsule body 2 accordingly has a central axis 17.
  • the lid 5 of the capsule 1 is curved under the internal pressure prevailing in the capsule 1.
  • the flange-shaped edge 8 has on the opposite side of the sealing surface 29 GE on a base 9 from which a sealing lip 10 protrudes.
  • the sealing lip 10 is designed circumferentially around the side wall 3.
  • the flange-shaped edge 8 has a rolled edge at its outer end, and the edge 8 could also be completed on the other.
  • the capsule body 2 is formed essentially in the shape of a double truncated cone.
  • a conical surface with a first cone angle 22 of 60 ° projects from its bottom 4.
  • a further conical surface with a second cone angle 23 of approximately 6 ° is attached to this conical surface.
  • This second conical surface forms the side wall 3, which has several stages 26, 28. At each of these stages, the cone angle and the outside diameter change minimally.
  • the last stage forms a widening 26 of the side wall 3 with a diameter change of 0.4 mm. This widening is arranged at a distance in the axial direction between 4.7 mm and 5.4 mm from the sealing surface 29.
  • the bottom 4 of the capsule 1 has a bottom surface 24 with a diameter 25 of 10 mm.
  • the capsule 1 has a height 21 of 27.85 mm. The height 21 between the bottom 4 and the sealing surface 29 is measured.
  • FIG. 2 the area of the sealing lip 10 of the capsule body 2 of the capsule 1 according to FIG. 1 is shown enlarged.
  • the flange-shaped edge 8 extends outward.
  • the flange-shaped edge 8 forms a sealing surface 29 to which the cover 5 (see Fi gur 1) is attached.
  • the base 9 of the edge can be seen from which the sealing lip 10 rises.
  • the sealing lip 10 is made hollow, i.e. a corresponding recess is formed on the side of the sealing surface 29.
  • the sealing lip 10 has an inner leg 11a directed towards the side wall 3 and an outwardly directed outer leg 11b.
  • the two legs 11a, 11b enclose an angle of 6.67 °, the outer leg 11b being arranged approximately perpendicular to the base 9 or to the sealing surface 29.
  • the sealing lip 10 has a radius of curvature 18 of 0.3 mm at its highest point.
  • the transition from the base 9 to the outer leg 11b has a radius of curvature 19b of 0.1 mm, the transition from the base 9 to the inner leg 11a has a radius of curvature 19a of 0.3 mm.
  • the radii are each measured on the side opposite the sealing surface 29.
  • Sealing lip 10 has a width 14 measured halfway up between the highest point of the sealing lip 10 and the sealing surface 29 of 0.65 mm.
  • the height 12 of the sealing lip 10, measured between the highest point of the sealing lip 10 and the sealing surface 29, is 1.35 mm.
  • the highest point or the highest edge of the sealing lip 10 is arranged at a distance 16 from the central axis 17 of the capsule 1 of 16.1 mm.
  • the sealing lip 10 has a radial From stood 15 to the side wall 3 of 0.6 mm.
  • the radial distance 15 between the sealing lip 10 and the side wall 3 is measured between the virtual intersection points of the side wall 3 with the sealing surface 29 and the inner leg 11a with the sealing surface 29.
  • the side wall 3 of the capsule body 2 has a diameter 20 of 30.1 mm.
  • the diameter 20 is determined at a virtual point of intersection between the side wall 3 and the sealing surface 29.
  • the capsule body has a material thickness of 0.1 mm in the area of the sealing lip 10.
  • This force 13 is also used to record a force-displacement diagram according to FIG.
  • FIG. 3 shows the enlarged representation of the capsule 1 according to FIG. 2, with a front end of a capsule receptacle 31 also being shown before it comes into contact with the capsule.
  • the central axis 17 of the capsule coincides with a central axis 38 of the capsule receptacle 31.
  • the capsule receptacle 31 has a groove 33 at its front end facing the flange-shaped edge of the capsule, which ideally cooperates with the sealing lip 10 of the capsule.
  • a distance 27 of the inner leg 11a to the central axis 17 of the capsule 1 must be essentially the same as a distance 35 of an outer circumferential line 36 with an inclination of 45 ° on the axis 38, one outwardly directed area of the contact surface 32 of the capsule receptacle 31, to the central axis 38 of the capsule receptacle 31.
  • the two distances 27 and 35 are preferably in a ratio between 0.9 and 1.1, preferably between 0.95 and 1.05, particularly preferably between 0.99 and 1.03.
  • the distance 27 of the inner leg 11a to the central axis 17 of the capsule 1 is measured halfway between the highest point or the highest edge of the sealing lip 10 and the sealing surface 29 ge.
  • a distance 40 between the outer circumferential line 36 and an inner circumferential line 37, defined by an inclination of 45 ° of an inwardly directed region of the contact surface 32 of the capsule receptacle 31, is at least the same size as the sealing lip 10 from the side wall 3 of the capsule body 2.
  • the diameter 20 of the side wall 3 of the capsule body 2 is 0.8% smaller than a diameter 41 of the capsule receptacle 31.
  • the diameter 41 of the capsule receptacle 31 is measured at a virtual intersection of its inner surface with a hori spanned through the opening of the capsule receptacle zontal level.
  • FIG. 4 shows the representation according to FIG. 3, where the capsule receptacle 31 already forms a tight connection with the capsule 1.
  • the sealing lip 10 is received in the groove 33 of the capsule receptacle 31 and touches the contact surface 32 of the capsule receptacle 31 on two circumferential lines.
  • the sealing lip 10 will touch the contact surface 32 at a first point.
  • FIG. 5 shows a force-displacement diagram of a force 13 (see FIG. 2) which acts in the axial direction on the highest edge of the sealing lip.
  • the tool for measuring the force has a flat surface which runs perpendicular to the axial direction of the capsule.
  • a linear range of the increase in the force-displacement diagram in a range from 100 N to over 500 N can be clearly seen. This linear range can only be explained by an elastic deformation of the sealing lip. The fact that the deformation is elastic can be verified by repeating the measurement on the same capsule. If the force-displacement diagram of the second measurement coincides with that of the first measurement, it is an elastic deformation.
  • FIG. 6 shows a cross section through a further embodiment of a capsule 1 according to the invention, which additionally has a fleece 43 arranged in the area of the base 4. Otherwise, the capsule body 2 and the capsule 1 correspond to the embodiment according to FIG. 1, the lid and the substance not being shown. The relevant details are no longer described.
  • the fleece 43 is attached to the capsule body 2 with a seal 44 in a conical partial area of the base 4.
  • the fleece 43 is arranged in the capsule body 2 in such a way that a free distance 47 is formed between the capsule bottom 4 and the fleece 43. This distance 47 together with the mobility of the fleece 43 prevents the fleece from being pierced when the capsule 1 is opened with the penetrants of a preparation machine. From stand 47 is 1.0 mm.
  • the seal 43 between the capsule body 2 and the fleece 43 follows a circular path and has an outer diameter 46 of 21.5 mm and an inner diameter 45 of 19.6 mm.
  • the fleece 43 is not necessarily flat but can have a truncated cone shape which runs approximately parallel to the bottom 4 of the capsule 1 at a distance 47.
  • the fleece 43 has a grammage of 25.0 g / m 2 and a thickness of 77 ⁇ m.
  • the fleece 43 has an air permeability greater than 300 1 / sm 2 according to ISO 9237: 1995 at an air humidity of 50% and a temperature of 23 ° C.
  • FIG. 7 the seal 44 between the capsule body 2 and the fleece 43 (see FIG. 6) is shown in a schematic representation.
  • the seal 44 consists of two circular segments which are each separated by a sealing gap 48 with a width 49 of 1.0 mm.
  • a sealing gap 48 with a width 49 of 1.0 mm.

Landscapes

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

Abstract

L'invention concerne une capsule (1) et un logement (31) de capsule d'une machine de préparation (30). Une lèvre d'étanchéité (10) correspond à une rainure (33) du logement (31) de capsule de telle manière que la lèvre d'étanchéité (10) est logée dans la rainure (33) et rend possible une liaison étanche avec une surface de contact (32) du logement (31) de capsule.
EP20706343.9A 2019-03-01 2020-02-28 Capsule et système de préparation d'une denrée alimentaire liquide Pending EP3931128A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19160367.9A EP3702298A1 (fr) 2019-03-01 2019-03-01 Capsule et système destinés à la préparation d'une denrée alimentaire liquide
PCT/EP2020/055330 WO2020178192A1 (fr) 2019-03-01 2020-02-28 Capsule et système de préparation d'une denrée alimentaire liquide

Publications (1)

Publication Number Publication Date
EP3931128A1 true EP3931128A1 (fr) 2022-01-05

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EP19160367.9A Pending EP3702298A1 (fr) 2019-03-01 2019-03-01 Capsule et système destinés à la préparation d'une denrée alimentaire liquide
EP20706343.9A Pending EP3931128A1 (fr) 2019-03-01 2020-02-28 Capsule et système de préparation d'une denrée alimentaire liquide

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19160367.9A Pending EP3702298A1 (fr) 2019-03-01 2019-03-01 Capsule et système destinés à la préparation d'une denrée alimentaire liquide

Country Status (9)

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US (1) US20220144537A1 (fr)
EP (2) EP3702298A1 (fr)
JP (1) JP2022522509A (fr)
CN (1) CN113544065A (fr)
AU (1) AU2020230978A1 (fr)
BR (1) BR112021014948A2 (fr)
CA (1) CA3128122A1 (fr)
WO (1) WO2020178192A1 (fr)
ZA (1) ZA202106286B (fr)

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE347837T1 (de) 2004-10-25 2007-01-15 Nestec Sa Kapsel mit dichtungsmitteln
WO2006045537A1 (fr) * 2004-10-25 2006-05-04 Nestec S.A. Capsule pourvue d'un element d'etancheite a distorsion
EP1849715B1 (fr) 2006-04-24 2009-07-01 Nestec S.A. Cartouche pour la préparation d'une boisson avec élement d'étanchéité et son procédé de fabrication
PL2151313T3 (pl) 2008-07-15 2012-03-30 Nestec Sa Sposób nakładania ciekłej gumy uszczelniającej na kapsułkę
ITVR20120043A1 (it) * 2012-03-14 2013-09-15 Coffee Star S A Sistema per la produzione di bevande
EP3199473B1 (fr) * 2012-07-16 2020-09-23 Tuttoespresso S.r.l. Capsule et système avec élément d'étanchéité
GB201308927D0 (en) 2013-05-17 2013-07-03 Kraft Foods R & D Inc A beverage preparation system, a capsule and a method for forming a beverage
AU2014266921C1 (en) 2013-05-17 2018-01-25 Koninklijke Douwe Egberts B.V. A beverage preparation system, a capsule and a method for forming a beverage
ITVR20130243A1 (it) * 2013-11-08 2015-05-09 Caffita System Spa Capsula e sistema per la produzione di bevande
WO2015101394A1 (fr) * 2013-12-30 2015-07-09 Landmax Ltd Capsule pour préparation de boisson avec élément d'étanchéité déformable
MY181314A (en) * 2014-02-19 2020-12-21 Nestle Sa Capsule kit for use in a food preparation machine
BR112017005492B1 (pt) 2014-09-17 2021-10-26 David Rubinstein Cápsula para preparação de uma bebida
ES2743219T3 (es) * 2015-05-15 2020-02-18 Douwe Egberts Bv Una cápsula, un sistema para preparar una bebida potable a partir de dicha cápsula y uso de dicha cápsula en un dispositivo de preparación de bebidas
NL2019254B9 (en) * 2016-10-07 2018-09-10 Douwe Egberts Bv A capsule, a system for preparing a potable beverage from such a capsule and use of such a capsule in a beverage preparation device
BR112019017905A2 (pt) * 2017-04-04 2020-05-12 Société des Produits Nestlé S.A. Cápsula para o preparo de bebida com membro vedante integralmente formado
MX2019013530A (es) * 2017-06-26 2020-02-10 Nestle Sa Una capsula y sistema para preparar una bebida a partir de tal capsula con un miembro de sellado.
NL2019253B1 (en) 2017-07-14 2019-01-28 Douwe Egberts Bv Assembly of a capsule and a brew chamber, brew chamber, beverage preparation machine, capsule and use of a capsule.

Also Published As

Publication number Publication date
US20220144537A1 (en) 2022-05-12
WO2020178192A1 (fr) 2020-09-10
EP3702298A1 (fr) 2020-09-02
AU2020230978A1 (en) 2021-08-26
CA3128122A1 (fr) 2020-09-10
CN113544065A (zh) 2021-10-22
JP2022522509A (ja) 2022-04-19
ZA202106286B (en) 2022-09-28
BR112021014948A2 (pt) 2021-09-28

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