EP1440914A1 - Kartusche für die Zubereitung eines Getränkes - Google Patents

Kartusche für die Zubereitung eines Getränkes Download PDF

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Publication number
EP1440914A1
EP1440914A1 EP04250389A EP04250389A EP1440914A1 EP 1440914 A1 EP1440914 A1 EP 1440914A1 EP 04250389 A EP04250389 A EP 04250389A EP 04250389 A EP04250389 A EP 04250389A EP 1440914 A1 EP1440914 A1 EP 1440914A1
Authority
EP
European Patent Office
Prior art keywords
cartridge
outer member
inner member
beverage
discharge spout
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.)
Granted
Application number
EP04250389A
Other languages
English (en)
French (fr)
Other versions
EP1440914B1 (de
Inventor
Andrew Halliday
Steven Carter
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.)
Kraft Foods R&D Inc USA
Original Assignee
Kraft Foods R&D Inc Deutschland
Kraft Foods R&D Inc USA
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
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Publication of EP1440914A1 publication Critical patent/EP1440914A1/de
Application granted granted Critical
Publication of EP1440914B1 publication Critical patent/EP1440914B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/46—Applications of disintegrable, dissolvable or edible materials
    • B65D65/466—Bio- or photodegradable packaging materials
    • 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
    • B65D85/8052—Details of the outlet

Definitions

  • the present invention relates to a cartridge for the preparation of beverages and, in particular, to sealed cartridges which are formed from substantially air- and water-impermeable materials and which contain one or more ingredients for the preparation of beverages.
  • WO01/587 there is described a cartridge for the preparation of beverages which operates at a pressure generally in the range 0.7 to 2.0 x 10 5 Pa.
  • the cartridge is designed for use in a beverage preparation machine for the commercial or industrial market and is relatively expensive.
  • the cartridges and beverage preparation machine are suitable, in particular, for the domestic market in terms of cost, performance and reliability.
  • Beverage cartridges can be prone to spluttering and splashing problems wherein during the dispensation of the beverage from the cartridge beverage is sprayed or splashed outside the confines of the receptacle. This is particularly the case with beverages dispensed at relatively high pressure. It has been attempted to alleviate this problem by providing a discharge probe on the beverage preparation machine which guides the beverage into the receptacle. However, the discharge probe tends to become contaminated over time with beverage residue and is difficult to clean. Further, there is a risk of cross-contamination between beverage types.
  • the present invention provides a cartridge containing one or more beverage ingredients and being formed from substantially air- and water-impermeable materials, the cartridge comprising an inlet for the introduction of an aqueous medium into the cartridge and an outlet for discharge of a beverage produced from the one or more beverage ingredients, wherein the cartridge comprises an outer member and an inner member conjoined on assembly with the outer member, characterised by the inner member comprising a discharge spout defining the outlet of the cartridge.
  • cartridge any package, container, sachet or receptacle which contains one or more beverage ingredients in the manner described.
  • the cartridge may be rigid, semi-rigid or flexible.
  • the cartridge of the present invention contains one or more beverage ingredients suitable for the formation of a beverage product.
  • the beverage product may be, for example, one of coffee, tea, chocolate or a dairy-based beverage including milk.
  • the beverage ingredients may be powdered, ground, leaf-based or liquid.
  • the beverage ingredients may be insoluble or soluble. Examples include roast and ground coffee, leaf tea, powdered chocolate and soup, liquid milk-based beverages, carbonated drinks and concentrated fruit juices.
  • the cartridge of the present invention is easily assembled with the main components being the inner member and the outer member.
  • the manufacture of each component can be optimised. This is particularly advantageous in the cartridge of the present invention where very small tolerances are desirable since the beverage flow path through the cartridge is defined by the interface between the outer member and the inner member.
  • the components of the inner member and the outer member may more easily be sterilised prior to assembly when they are separated. Once the components are conjoined a number of small-apertured, tortuous pathways are created which cannot effectively be sterilised using known methods.
  • the ability to sterilise the components is a particularly advantageous feature where the cartridges are used for dispensing dairy-based beverages.
  • the cartridge is not required to be inverted during assembly since the joining of the inner member and optionally a filter, the filling of the beverage ingredients and the joining of a lid, such as a laminate, can all be carried out with the outer member in one orientation.
  • the inner member comprises the discharge spout.
  • the discharge spout serves to direct the discharged beverage into a receptacle such as a cup.
  • the discharge spout avoids excessive splashing or spraying of the beverage and is also useful in adjusting the flow characteristics of the beverage as it is transferred from the cartridge into the receptacle.
  • the discharge spout can be shaped to reduce the degree of turbulence imparted to the beverage to avoid unnecessary reduction in the quantity of bubbles contained in the beverage.
  • the cartridge itself comprises the discharge spout rather than providing a separate discharge spout or probe in a beverage preparation machine.
  • the discharge spout is integral with the inner member.
  • the discharge spout and inner member are moulded or otherwise formed as an integral, single unit which reduces the manufacturing cost of the cartridge and reduces the number of components which require assembly.
  • the discharge spout comprises a tapered portion. In an alternative embodiment, the discharge spout comprises a cylindrical portion. In a further optional variation, the discharge spout comprises a partition extending at least part way along the length of the discharge spout. The partition reduces the amount of spraying and splashing of beverage on discharge.
  • a snap-fit arrangement is provided to conjoin the outer member and the inner member.
  • the snap-fit arrangement comprises co-operating formations on the inner member and the outer member.
  • a snap-fit arrangement provides a quick to assemble but secure method of conjoining the inner member and outer member.
  • the snap-fit arrangement avoids the need for glues or other such adhesives in the interior of the cartridge which will be exposed to the beverage ingredients.
  • the outer member comprises a closed first end and an open second end, wherein with the inner member conjoined to the outer member the outlet of the discharge spout is directed towards the open second end.
  • the inlet is directed towards the open second end of the outer member.
  • the inlet and outlet are directed to the same side of the cartridge. This allows the cartridge to be used in a low-profile machine where piercing means for forming the inlet and the outlet, in use, project from a single plane of the beverage preparation machine.
  • the outer member and inner member are conjoined at or near the closed first end of the outer member.
  • the conjoining of the inner and outer members is achieved at a point remote from the open end, or mouth, of the outer member.
  • the conjoining step can be done before beverage ingredients are filled into the cartridge and before sealing of the open end or mouth of the cartridge. This simplifies the assembly process since the inner and outer members may first be conjoined to form a cartridge sub-assembly which may then be transferred to a filling station on the packing line where the one or more beverage ingredients are inserted. The filled cartridge is then sealed, for example, by a laminated sheet which is heat welded to the open end of the outer member. This assembly process avoids the difficult task of aligning and keeping in alignment an outer member, inner member and laminate during the heat-welding step.
  • the outer member comprises an inwardly directed extension which is received in a proximal end of the discharge spout on conjoining of the outer member and the inner member.
  • the inner member comprises a frame having a filter disposed thereupon.
  • one or more passages are defined between the frame and a closed first end of the outer member when the inner member and outer member are conjoined.
  • the one or more passages are preferably delimited by webs extending upwardly from the frame to the closed first end of the outer member.
  • the one or more passages slope downwardly towards the discharge spout.
  • the inner member further comprises a skirt surrounding the discharge spout.
  • the skirt comprises an upper extension which, on assembly of the cartridge, contacts the closed first end of the cartridge.
  • An upper rim of the upper extension preferably, engages a co-operating formation of the outer member to form a snap-fit arrangement for conjoining the inner member to the outer member.
  • the co-operating formation of the outer member is an inwardly directed extension.
  • the cartridge is disc-shaped.
  • the cartridge further comprises means for producing a jet of the beverage, which means comprises an aperture in a beverage flow path between the inlet and the outlet.
  • the inlet and/or outlet is preferably covered by a substantially air- and water-impermeable material prior to the formation, in use, of the inlet and/or outlet in the cartridge.
  • the inlet and/or outlet is covered by a substantially air- and water-impermeable laminate.
  • the laminate may be polypropylene.
  • the outer member and/or inner member are formed, for example, from polypropylene.
  • the outer member and/or inner member may be formed from a biodegradable polymer.
  • the inner member forms a load-bearing member.
  • the discharge spout may comprise a constriction.
  • each cartridge as described above, wherein the percentage yield of the beverage produced from the one or more beverage ingredients contained in the cartridges is consistent to within 1.0 standard deviations.
  • upper and “lower” and equivalents will be used to describe the relational positioning of features of the invention.
  • the terms “upper” and “lower” and equivalents should be understood to refer to the cartridge (or other components) in its normal orientation for insertion into a beverage preparation machine and subsequent dispensing as shown, for example, in Figure 4.
  • “upper” and “lower” refer, respectively, to relative positions nearer or further from a top surface 11 of the cartridge.
  • the terms “inner” and “outer” and equivalents will be used to describe the relational positioning of features of the invention.
  • the terms “inner” and “outer” and equivalents should be understood to refer to relative positions in the cartridge (or other components) being, respectively, nearer or further from a centre or major axis X of the cartridge 1 (or other component).
  • the cartridge 1 of the present invention generally comprises an outer member 2, an inner member 3 and a laminate 5.
  • the outer member 2, inner member 3 and laminate 5 are assembled to form the cartridge 1 which has an interior 120 for containing one or more beverage ingredients, an inlet 121, an outlet 122 and a beverage flow path linking the inlet 121 to the outlet 122 and which passes through the interior 120.
  • the inlet 121 and outlet 122 are initially sealed by the laminate 5 and are opened in use by piercing or cutting of the laminate 5.
  • the beverage flow path is defined by spatial inter-relationships between the outer member 2, inner member 3 and laminate 5 as discussed below.
  • Other components may optionally be included in the cartridge 1, such as a filter 4, as will be described further below.
  • a first version of cartridge 1 which will be described for background purposes is shown in Figures 1 to 11.
  • the first version of the cartridge 1 is particularly designed for use in dispensing filtered products such as roast and ground coffee or leaf tea.
  • this version of the cartridge 1 and the other versions described below may be used with other products such as chocolate, coffee, tea, sweeteners, cordials, flavourings, alcoholic beverages, flavoured milk, fruit juices, squashes, sauces and desserts.
  • the overall shape of the cartridge 1 is generally circular or disc-shaped with the diameter of the cartridge 1 being significantly greater than its height.
  • a major axis X passes through the centre of the outer member as shown in Figure 1.
  • the overall diameter of the outer member 2 is 74.5 mm ⁇ 6mm and the overall height is 16 mm ⁇ 3mm.
  • the volume of the cartridge 1 when assembled is 30.2 ml ⁇ 20%.
  • the outer member 2 generally comprises a bowl-shaped shell 10 having a curved annular wall 13, a closed top 11 and an open bottom 12.
  • the diameter of the outer member 2 is smaller at the top 11 compared to the diameter at the bottom 12, resulting from a flaring of the annular wall 13 as one traverses from the closed top 11 to the open bottom 12.
  • the annular wall 13 and closed bottom 11 together define a receptacle having an interior 34.
  • a hollow inwardly directed cylindrical extension 18 is provided in the closed top 11 centred on the major axis X.
  • the cylindrical extension 18 comprises a stepped profile having first, second and third portions 19, 20 and 21.
  • the first portion 19 is right circular cylindrical.
  • the second portion 20 is frusto-conical in shape and is inwardly tapered.
  • the third portion 21 is another right circular cylinder and is closed off by a lower face 31.
  • the diameter of the first, second and third portion 19, 20 and 21 incrementally decreases such that the diameter of the cylindrical extension 18 decreases as one traverses from the top 11 to the closed lower face 31 of the cylindrical extension 18.
  • a generally horizontal shoulder 32 is formed on the cylindrical extension 18 at the junction between the second and third portions 20 and 21.
  • An outwardly extending shoulder 33 is formed in the outer member 2 towards the bottom 12.
  • the outwardly extending shoulder 33 forms a secondary wall 15 co-axial with the annular wall 13 so as to define an annular track forming a manifold 16 between the secondary wall 15 and the annular wall 13.
  • the manifold 16 passes around the circumference of the outer member 2.
  • a series of slots 17 are provided in the annular wall 13 level with the manifold 16 to provide gas and liquid communication between the manifold 16 and the interior 34 of the outer member 2. As shown in Figure 3, the slots 17 comprise vertical slits in the annular wall 13. Between 20 and 40 slots are provided. In the embodiment shown thirty-seven slots 17 are provided generally equi-spaced around the circumference of the manifold 16.
  • the slots 17 are preferably between 1.4 and 1.8 mm in length. Typically the length of each slot is 1.6 mm representing 10% of the overall height of the outer member 2.
  • the width of each slot is between 0.25 and 0.35 mm. Typically, the width of each slot is 0.3 mm. The width of the slots 17 is sufficiently narrow to prevent the beverage ingredients passing therethrough into the manifold 16 either during storage or in use.
  • An inlet chamber 26 is formed in the outer member 2 at the periphery of the outer member 2.
  • a cylindrical wall 27 is provided, as most clearly shown in Figure 5, which defines the inlet chamber 26 within, and partitions the inlet chamber 26 from, the interior 34 of the outer member 2.
  • the cylindrical wall 27 has a closed upper face 28 which is formed on a plane perpendicular to the major axis X and an open lower end 29 co-planar with the bottom 12 of the outer member 2.
  • the inlet chamber 26 communicates with the manifold 16 via two slots 30 as shown in Figure 1. Alternatively, between one and four slots may be used to communicate between the manifold 16 and the inlet chamber 26.
  • a lower end of the outwardly extending shoulder 33 is provided with an outwardly extending flange 35 which extends perpendicularly to the major axis X.
  • the flange 35 has a width of between 2 and 4 mm.
  • a portion of the flange 35 is enlarged to form a handle 24 by which the outer member 2 may be held.
  • the handle 24 is provided with an upturned rim 25 to improve grip.
  • the outer member 2 is formed as a single integral piece from high density polyethylene, polypropylene, polystyrene, polyester, or a laminate of two or more of these materials.
  • a suitable polypropylene is the range of polymers available from DSM UK Limited (Redditch, United Kingdom).
  • the outer member may be opaque, transparent or translucent.
  • the manufacturing process may be injection moulding.
  • the inner member 3 as shown in Figures 7 to 10, comprises an annular frame 41 and a downwardly extending cylindrical funnel 40.
  • a major axis X passes through the centre of the inner member 3 as shown in Figure 7.
  • the annular frame 41 comprises an outer rim 51 and an inner hub 52 joined by ten equi-spaced radial spokes 53.
  • the inner hub 52 is integral with and extends from the cylindrical funnel 40.
  • Filtration apertures 55 are formed in the annular frame 41 between the radial spokes 53.
  • a filter 4 is disposed on the annular frame 41 so as to cover the filtration apertures 55.
  • the filter is preferably made from a material with a high wet strength, for example a non-woven fibre material of polyester.
  • Other materials which may be used include a water-impermeable cellulosic material, such as a cellulosic material comprising woven paper fibres.
  • the woven paper fibres may be admixed with fibres of polypropylene, polyvinyl chloride and/or polyethylene. The incorporation of these plastic materials into the cellulosic material renders the cellulosic material heat-sealable.
  • the filter 4 may also be treated or coated with a material which is activated by heat and/or pressure so that it can be sealed to the annular frame 41 in this way.
  • the inner hub 52 is located at a lower position than the outer rim 51, resulting in the annular frame 41 having a sloping lower profile.
  • each spoke 53 is provided with an upstanding web 54 which divides a void space above the annular frame 41 into a plurality of passages 57.
  • Each passage 57 is bounded on either side by a web 54 and on a lower face by the filter 4.
  • the passages 57 extend from the outer rim 51 downwardly towards, and open into, the cylindrical funnel 40 at openings 56 defined by the inner extremities of the webs 54.
  • the cylindrical funnel 40 comprises an outer tube 42 surrounding an inner discharge spout 43.
  • the outer tube 42 forms the exterior of the cylindrical funnel 40.
  • the discharge spout 43 is joined to the outer tube 42 at an upper end of the discharge spout 43 by means of an annular flange 47.
  • the discharge spout 43 comprises an inlet 45 at an upper end which communicates with the openings 56 of the passages 57 and an outlet 44 at a lower end through which the prepared beverage is discharged into a cup or other receptacle.
  • the discharge spout 43 comprises a frusto-conical portion 48 at an upper end and a cylindrical portion 58 at a lower end.
  • the cylindrical portion 58 may have a slight taper such that it narrows towards the outlet 44.
  • the frusto-conical portion 48 helps to channel beverage from the passages 57 down towards the outlet 44 without inducing turbulence to the beverage.
  • An upper surface of the frusto-conical portion 48 is provided with four support webs 49 equi-spaced around the circumference of the cylindrical funnel 40.
  • the support webs 49 define channels 50 therebetween.
  • the upper edges of the support webs 49 are level with one another and perpendicular to the major axis X.
  • the inner member 3 may be formed as a single integral piece from polypropylene or a similar material as described above and by injection moulding in the same manner as the outer member 2.
  • the inner member 3 and/or the outer member 2 may be made from a biodegradable polymer.
  • suitable materials include degradable polyethylene (for example, SPITEK supplied by Symphony Environmental, Borehamwood, United Kingdom), biodegradable polyester amide (for example, BAK 1095 supplied by Symphony Environmental), poly lactic acids (PLA supplied by Cargil, Minnesota, USA), starch-based polymers, cellulose derivatives and polypeptides.
  • the laminate 5 is formed from two layers, a first layer of aluminium and a second layer of cast polypropylene.
  • the aluminium layer is between 0.02 and 0.07 mm in thickness.
  • the cast polypropylene layer is between 0.025 and 0.065 mm in thickness.
  • the aluminium layer is 0.06 mm and the polypropylene layer is 0.025 mm thick.
  • This laminate is particularly advantageous as it has a high resistance to curling during assembly. As a result the laminate 5 may be pre-cut to the correct size and shape and subsequently transferred to the assembly station on the production line without undergoing distortion. Consequently, the laminate 5 is particularly well suited to welding.
  • Other laminate materials may be used including PET/Aluminium/PP, PE/EVOH/PP, PET/metallised/PP and Aluminium/PP laminates. Roll laminate stock may be used instead of die cut stock.
  • the cartridge 1 may be closed by a rigid or semi-rigid lid instead of a flexible laminate.
  • the outer member 2 is orientated with the open bottom 12 directed upwards.
  • the inner member 3 is then inserted into the outer member 2 with the outer rim 51 being received as a loose fit in an axial extension 14 at top 11 of the cartridge 1.
  • the cylindrical extension 18 of the outer member 2 is at the same time received in the upper portion of the cylindrical funnel 40 of the inner member 3.
  • the third portion 21 of the cylindrical extension 18 is seated inside the cylindrical funnel 40 with the closed lower face 31 of the cylindrical extension 18 bearing against the support webs 49 of the inner member 3.
  • the filter 4 is then placed over the inner member 3 such that the filter material contacts the annular rim 51.
  • An ultrasonic welding process is then used to join the filter 4 to the inner member 3 and at the same time, and in the same process step, the inner member 3 to the outer member 2.
  • the inner member 3 and filter 4 are welded around the outer rim 51.
  • the inner member 3 and outer member 2 are joined by means of weld lines around the outer rim 51 and also the upper edges of the webs 54
  • the outer member 2 and inner member 3 when joined together define a void space 130 in the interior 120 below the annular flange 41 and exterior the cylindrical funnel 40 which forms a filtration chamber.
  • the filtration chamber 130 and passages 57 above the annular frame 41 are separated by the filter paper 4.
  • the filtration chamber 130 contains the one or more beverage ingredients 200.
  • the one or more beverage ingredients are packed into the filtration chamber 130.
  • the ingredient is typically roast and ground coffee or leaf tea.
  • the density of packing of the beverage ingredients in the filtration chamber 130 can be varied as desired.
  • the filtration chamber contains between 5.0 and 10.2 grams of roast and ground coffee in a filtration bed of thickness of typically 5 to 14 mm.
  • the interior 120 may contain one or more bodies, such as spheres, which are freely movable within the interior 120 to aid mixing by inducing turbulence and breaking down deposits of beverage ingredients during discharge of the beverage.
  • the laminate 5 is then affixed to the outer member 2 by forming a weld 126 around the periphery of the laminate 5 to join the laminate 5 to the lower surface of the outwardly extending flange 35.
  • the weld 126 is extended to seal the laminate 5 against the lower edge of the cylindrical wall 27 of the inlet chamber 26.
  • a weld 125 is formed between the laminate 5 and the lower edge of the outer tube 42 of the cylindrical funnel 40.
  • the laminate 5 forms the lower wall of the filtration chamber 130 and also seals the inlet chamber 26 and cylindrical funnel 40.
  • a small gap 123 exists prior to dispensation between the laminate 5 and the lower edge of the discharge spout 43.
  • a variety of welding methods may be used, such as heat and ultrasonic welding, depending on the material characteristics of the laminate 5.
  • the inner member 3 spans between the outer member 2 and the laminate 5.
  • the inner member 3 is formed from a material of relative rigidity, such as polypropylene.
  • the inner member 3 forms a load-bearing member that acts to keep the laminate 5 and outer member 2 spaced apart when the cartridge 1 is compressed. It is preferred that the cartridge 1 is subjected to a compressive load of between 130 and 280N in use. The compressive force acts to prevent the cartridge failing under internal pressurisation and also serves to squeeze the inner member 3 and outer member 2 together. This ensures that the internal dimensions of passageways and apertures in the cartridge 1 are fixed and unable to change during pressurisation of the cartridge 1.
  • the cartridge 1 To use the cartridge 1 it is first inserted into a beverage preparation machine and the inlet 121 and outlet 122 are opened by piercing members of the beverage preparation machine which perforate and fold back the laminate 5.
  • An aqueous medium typically water
  • An aqueous medium typically water
  • the water is forced radially inwardly through the filtration chamber 130 and mixes with the beverage ingredients 200 contained therein.
  • the water is at the same time forced upwardly through the beverage ingredients.
  • the beverage formed by passage of the water through the beverage ingredients passes through the filter 4 and filtration apertures 55 into the passages 57 lying above the annular frame 41.
  • the sealing of the filter 4 onto the spokes 53 and the welding of the rim 51 with the outer member 2 ensures that there are no short-circuits and all the beverage has to pass through the filter 4.
  • the beverage then flows downwardly along the radial passages 57 formed between the webs 54 and through the openings 56 and into the cylindrical funnel 40.
  • the beverage passes along the channels 50 between the support webs 47 and down the discharge spout 43 to the outlet 44 where the beverage is discharged into a receptacle such as a cup.
  • the beverage preparation machine comprises an air purge facility, wherein compressed air is forced through the cartridge 1 at the end of the dispense cycle to flush out the remaining beverage into the receptacle.
  • a second version of cartridge 1 is shown in Figures 12 to 18.
  • the second version of the cartridge 1 is particularly designed for use in dispensing espresso-style products such as roast and ground coffee where it is desirable to produce a beverage having a froth of tiny bubbles known as a crema.
  • Many of the features of the second version of the cartridge 1 are the same as in the first version and like numerals have been used to reference like features. In the following description the differences between the first and second versions will be discussed. Common features which function in the same manner will not be discussed in detail.
  • the outer member 2 is of the same construction as in the first version of cartridge 1 and as shown in Figures 1 to 6.
  • the annular frame 41 of the inner member 3 is the same as in the first version. Also, a filter 4 is disposed on the annular frame 41 so as to cover the filtration apertures 55.
  • the outer tube 42 of the cylindrical funnel 40 is also as before.
  • the discharge spout 43 is provided with a partition 65 which extends part way up the discharge spout 43 from the outlet 44. The partition 65 helps to prevent the beverage spraying and/or splashing as it exits the discharge spout 43.
  • the profile of the discharge spout 43 is also different and comprises a stepped profile with a distinct dog-leg 66 near an upper end of the tube 43.
  • a rim 67 is provided upstanding from the annular flange 47 joining the outer tube 42 to the discharge spout 43.
  • the rim 67 surrounds the inlet 45 to the discharge spout 43 and defines an annular channel 69 between the rim 67 and the upper portion of the outer tube 42.
  • the rim 67 is provided with an inwardly directed shoulder 68.
  • an aperture 70 is provided in the form of a slot which extends from an upper edge of rim 67 to a point marginally below the level of the shoulder 68 as most clearly shown in Figures 12 and 13.
  • the slot has a width of 0.64 mm.
  • An air inlet 71 is provided in annular flange 47 circumferentially aligned with the aperture 70 as shown in Figures 16 and 17.
  • the air inlet 71 comprises an aperture passing through the flange 47 so as to provide communication between a point above the flange 47 and the void space below the flange 47 between the outer tube 42 and discharge spout 43.
  • the air inlet 71 comprises an upper frusto-conical portion 73 and a lower cylindrical portion 72.
  • the air inlet 71 is typically formed by a mould tool such as a pin. The tapered profile of the air inlet 71 allows the mould tool to be more easily removed from the moulded component.
  • the wall of the outer tube 42 in the vicinity of the air inlet 71 is shaped to form a chute 75 leading from the air inlet 71 to the inlet 45 of the discharge spout 43.
  • a canted shoulder 74 is formed between the air inlet 71 and the chute 75 to ensure that the jet of beverage issuing from the slot 70 does not immediately foul on the upper surface of the flange 47 in the immediate vicinity of the air inlet 71.
  • the assembly procedure for the second version of cartridge 1 is similar to the assembly of the first version. However, there are certain differences. As shown in Figure 18, the third portion 21 of the cylindrical extension 18 is seated inside the support rim 67 rather than against support webs. The shoulder 32 of the cylindrical extension 18 between the second portion 20 and third portion 21 bears against the upper edge of the support rim 67 of the inner member 3. An interface zone 124 is thus formed between the inner member 3 and the outer member 2 comprising a face seal between the cylindrical extension 18 and the support rim 67 which extends around nearly the whole circumference of the cartridge 1.
  • the seal between the cylindrical extension 18 and the support rim 67 is not fluid-tight though since the slot 70 in the support rim 67 extends through the support rim 67 and downwardly to a point marginally below the shoulder 68. Consequently the interface fit between the cylindrical extension 18 and the support rim 67 transforms the slot 70 into an aperture 128, as most clearly shown in Figure 18, providing gas and liquid communication between the annular channel 69 and the discharge spout 43.
  • the aperture is typically 0.64 mm wide by 0.69 mm long.
  • Operation of the second version of cartridge 1 to dispense a beverage is similar to the operation of the first version but with certain differences.
  • Beverage in the radial passages 57 flows downwardly along the passages 57 formed between the webs 54 and through the openings 56 and into the annular channel 69 of the cylindrical funnel 40. From the annular channel 69 the beverage is forced under pressure through the aperture 128 by the back pressure of beverage collecting in the filtration chamber 130 and passages 57. The beverage is thus forced through aperture 128 as a jet and into an expansion chamber formed by the upper end of the discharge spout 43. As shown in Figure 18, the jet of beverage passes directly over the air inlet 71. As the beverage enters the discharge spout 43 the pressure of the beverage jet drops.
  • the aperture 128 and the air inlet 71 together form an eductor which acts to entrain air into the beverage.
  • Flow of beverage into the eductor should be kept as smooth as possible to reduce pressure losses.
  • the walls of the eductor should be made concave to reduce losses due to 'wall effect' friction.
  • the dimensional tolerance of the aperture 128 is small.
  • the aperture size is fixed plus or minus 0.02 mm 2 .
  • Hairs, fibrils or other surface irregularities can be provided within or at the exit of the eductor to increase the effective cross-sectional area which has been found to increase the degree of air entrainment.
  • a third version of cartridge 1 is shown in Figures 19 to 29.
  • the third version of the cartridge 1 is particularly designed for use in dispensing soluble products which may be in powdered, liquid, syrup, gel or similar form.
  • the soluble product is dissolved by or forms a suspension in, an aqueous medium such as water when the aqueous medium is passed, in use, through the cartridge 1.
  • beverages include chocolate, coffee, milk, tea, soup or other rehydratable or aqueous-soluble products.
  • the hollow inwardly directed cylindrical extension 18 of the outer member 2 of the third version has a larger overall diameter as shown in Figure 20.
  • the diameter of the first portion 19 is typically between 16 and 18 mm compared to 13.2 mm for the outer member 2 of the previous versions.
  • the first portion 19 is provided with a convex outer surface 19a, or bulge, as most clearly shown in Figure 20, the function of which will be described below.
  • the diameter of the third portions 21 of the cartridges 1 are however the same resulting in the area of the shoulder 32 being greater in this, the third version of the cartridge 1.
  • the volume of the cartridge 1 when assembled is 32.5 ml +20%.
  • the number and positioning of the slots in the lower end of the annular wall 13 is also different. Between 3 and 5 slots are provided. In the embodiment as shown in Figure 23, four slots 36 are provided equi-spaced around the circumference of the manifold 16. The slots 36 are slightly wider than in the previous versions of the cartridge 1 being between 0.35 and 0.45 mm, preferably 0.4 mm wide.
  • the construction of the cylindrical funnel 40 of the inner member 3 is the same as in the first version of cartridge 1 with an outer tube 42, discharge spout 45, annular flange 47 and support webs 49 being provided.
  • the only difference is that the discharge spout 45 is shaped with an upper frusto-conical section 92 and a lower cylindrical section 93.
  • annular frame 41 is replaced by a skirt portion 80 which surrounds the cylindrical funnel 40 and is joined thereto by means of eight radial struts 87 which adjoin the cylindrical funnel 40 at or near the annular flange 47.
  • a cylindrical extension 81 of the skirt portion 80 extends upwardly from the struts 87 to define a chamber 90 with an open upper face.
  • An upper rim 91 of the cylindrical extension 81 has an in-turned profile as shown in Figure 26.
  • An annular wall 82 of the skirt portion 80 extends downwardly from the struts 87 to define an annular channel 86 between the skirt portion 80 and the outer tube 42.
  • the annular wall 82 comprises at a lower end an exterior flange 83 which lies perpendicular to the major axis X.
  • a rim 84 depends downwardly from a lower surface of the flange 83 and contains five apertures 85 which are circumferentially equi-spaced around the rim 84.
  • the rim 84 is provided with a castellated lower profile.
  • Apertures 89 are provided between the struts 87 allowing communication between the chamber 90 and the annular channel 86.
  • the assembly procedure for the third version of cartridge 1 is similar to the assembly of the first version but with certain differences.
  • the outer member 2 and inner member 3 are push-fitted together as shown in Figure 29 and retained by means of a snap-fit arrangement rather than welded together.
  • On joining the two members the inwardly directed cylindrical extension 18 is received inside the upper cylindrical extension 81 of the skirt portion 80.
  • the inner member 3 is retained in the outer member 2 by frictional interengagement of the convex outer surface 19a of the first portion 19 of the cylindrical extension 18 with the in-turned rim 91 of the upper cylindrical extension 81.
  • With the inner member 3 located in the outer member 2 a mixing chamber 134 is defined located exterior to the skirt portion 80.
  • the mixing chamber 134 contains the beverage ingredients 200 prior to dispensation.
  • the four inlets 36 and the five apertures 85 are staggered circumferentially with respect to one another.
  • the radial location of the two parts relative to each other need not be determined or fixed during assembly since the use of four inlets 36 and five apertures 85 ensures that misalignment occurs between the inlets and apertures whatever the relative rotational positioning of the components.
  • the one or more beverage ingredients are packed into the mixing chamber 134 of the cartridge.
  • the density of packing of the beverage ingredients in the mixing chamber 134 can be varied as desired.
  • the laminate 5 is then affixed to the outer member 2 and inner member 3 in the same manner as described above in the previous versions.
  • water enters the mixing chamber 134 through the four slots 36 in the same manner as previous versions of the cartridge.
  • the water is forced radially inwardly through the mixing chamber and mixes with the beverage ingredients contained therein.
  • the product is dissolved or mixed in the water and forms the beverage in the mixing chamber 134 and is then driven though the apertures 85 into the annular channel 86 by back pressure of beverage and water in the mixing chamber 134.
  • the circumferential staggering of the four inlet slots 36 and the five apertures 85 ensures that jets of water are not able to pass radially directly from the inlet slots 36 to the apertures 85 without first circulating within the mixing chamber 134. In this way the degree and consistency of dissolution or mixing of the product is significantly increased.
  • the cartridge finds particular application with beverage ingredients in the form of viscous liquids or gels.
  • a liquid chocolate ingredient is contained in the cartridge 1 with a viscosity of between 1700 and 3900mPa at ambient temperature and between 5000 and 10000mPa at 0°C and a refractive solids of 67 Brix ⁇ 3.
  • liquid coffee is contained in the cartridge 1 with a viscosity of between 70 and 2000mPa at ambient and between 80 and 5000mPa at 0°C where the coffee has a total solids level of between 40 and 70%.
  • a fourth version of cartridge 1 is shown in Figures 30 to 34.
  • the fourth version of the cartridge 1 is particularly designed for use in dispensing liquid products such as concentrated liquid milk.
  • Many of the features of the fourth version of the cartridge 1 are the same as in the previous versions and like numerals have been used to reference like features. In the following description the differences between the fourth and previous versions will be discussed. Common features which function in the same manner will not be discussed in detail.
  • the outer member 2 is the same as in the third version of cartridge 1 and as shown in Figures 19 to 23.
  • the cylindrical funnel 40 of the inner member 3 is similar to that shown in the second version of cartridge 1 but with certain differences.
  • the discharge spout 43 is shaped with an upper frusto-conical section 106 and a lower cylindrical section 107.
  • Three axial ribs 105 are provided on the inner surface of the discharge spout 43 to direct the dispensed beverage downwards towards the outlet 44 and prevent the discharged beverage from spinning within the spout. Consequently, the ribs 105 act as baffles.
  • an air inlet 71 is provided through the annular flange 47. However, the chute 75 beneath the air inlet 71 is more elongated than in the second version.
  • a skirt portion 80 is provided similar to that shown in the third version of the cartridge 1 described above. Between 5 and 12 apertures 85 are provided in the rim 84. Typically ten apertures are provided rather than the five provided in the third version of cartridge 1.
  • annular bowl 100 is provided extending from and integral with the flange 83 of the skirt portion 80.
  • the annular bowl 100 comprises a flared body 101 with an open upper mouth 104 which is directed upwards.
  • feed apertures 103 shown in Figures 30 and 31 are located in the body 101 at or near the lower end of the bowl 100 where it joins the skirt portion 80.
  • the feed apertures are equi-spaced around the circumference of the bowl 100.
  • the laminate 5 is of the type described above in the previous embodiments.
  • the assembly procedure for the fourth version of cartridge 1 is the same as that for the third version.
  • Operation of the fourth version of cartridge is similar to that of the third version.
  • the water enters the cartridge 1 and the mixing chamber 134 in the same manner as before. There the water mixes with and dilutes the liquid product which is then forced out through the apertures 85 towards the outlet 44 as described above.
  • a proportion of the liquid product is initially contained within the annular bowl 100 as shown in Figure 34 and is not subject to immediate dilution by the water entering the mixing chamber 134.
  • the diluted liquid product in the lower part of the mixing chamber 134 will tend to exit through apertures 85 rather than be forced up and into the annular bowl 100 through upper mouth 104. Consequently, the liquid product in the annular bowl 100 will remain relatively concentrated compared to the product in the lower part of the mixing chamber 134.
  • the liquid product in the annular bowl 100 drips through the feed apertures 103 into the stream of product exiting the mixing chamber 134 through the apertures 85.
  • the annular bowl 100 acts to even out the concentration of the diluted liquid product entering the cylindrical funnel 40 by holding back a proportion of the concentrated liquid product and releasing it into the exiting liquid stream more steadily throughout the dispensation cycle.
  • the beverage is forced under pressure through the aperture 128 by the back pressure of beverage collecting in the filtration chamber 134 and chamber 90.
  • the beverage is thus forced through aperture 128 as a jet and into an expansion chamber formed by the upper end of the discharge spout 43.
  • the jet of beverage passes directly over the air inlet 71.
  • the pressure of the beverage jet drops.
  • air is entrained into the beverage stream in the form of a multitude of small air bubbles as the air is drawn up through the air inlet 71.
  • the jet of beverage issuing from the aperture 128 is funnelled downwards to the outlet 44 where the beverage is discharged into a receptacle such as a cup where the air bubbles form the desired frothy appearance.
  • the inner member 3, outer member 2, laminate 5 and filter 4 can all be readily sterilised due to the components being separable and not individually comprising tortuous passageways or narrow crevices. Rather, it is only after conjoining the components, after sterilisation, that the necessary passageways are formed. This is particularly important where the beverage ingredient is a dairy-based product such as liquid milk concentrate.
  • the fourth embodiment of beverage cartridge is particularly advantageous for dispensing a concentrated dairy-based liquid product such as liquid milk.
  • a concentrated dairy-based liquid product such as liquid milk.
  • powdered milk products have been provided in the form of sachets for adding to a pre-prepared beverage.
  • a cappuccino-style beverage it is necessary to foam the milk. This has been achieved previously by passing steam through a liquid milk product.
  • steam passes through a liquid milk product.
  • this necessitates the provision of a steam supply which increases the cost and complexity of the machine used to dispense the beverage.
  • the use of steam also increases the risk of injury during operation of the cartridge.
  • the present invention provides for a beverage cartridge having a concentrated dairy-based liquid product therein.
  • Fresh semi-skimmed milk contains approximately 1.6% fat and 10% total solids.
  • the concentrated liquid milk preparations of the present invention contain between 3 and 10% fat and 25 to 40% total solids. In a typical example, the preparation contains 4% fat and 30% total solids.
  • the concentrated milk preparations are suitable for foaming using a low pressure preparation machine as will be described below. In particular, foaming of the milk is achieved at pressures below 2 bar, preferably approximately 1.5 bar using the cartridge of the fourth embodiment described above.
  • the cartridge of the fourth embodiment is also advantageous in dispensing liquid coffee products.
  • beverage cartridge of the present invention advantageously provide an improved consistency of the dispensed beverage when compared to prior art cartridges.
  • Table 1 shows the results of brew yields for twenty samples each of cartridges A and B containing roast and ground coffee.
  • Cartridge A is a beverage cartridge according to the first embodiment of the present invention.
  • Cartridge B is a prior art beverage cartridge as described in the applicant's document WO01/58786.
  • % Yield (%SS * Brew Volume (g))/ (100 * Coffee Weight (g))
  • the materials of the cartridges described above may be provided with a barrier coating to improve their resistance to oxygen and/or moisture and/or other contaminant ingress.
  • the barrier coating may also improve the resistance to leakage of the beverage ingredients from within the cartridges and/or reduce the degree of leaching of extractibles from the cartridge materials which might adversely affect the beverage ingredients.
  • the barrier coating may be of a material selected from the group of PET, Polyamide, EVOH, PVDC or a metallised material.
  • the barrier coating may be applied by a number of mechanisms including but not limited to vapour deposition, vacuum deposition, plasma coating, co-extrusion, in-mould labelling and two/multi-stage moulding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Apparatus For Making Beverages (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Tea And Coffee (AREA)
  • Non-Alcoholic Beverages (AREA)
EP04250389A 2003-01-24 2004-01-23 Kartusche für die Zubereitung eines Getränkes Expired - Lifetime EP1440914B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0301733 2003-01-24
GB0301733A GB2397502B (en) 2003-01-24 2003-01-24 Cartridge for the preparation of beverages

Publications (2)

Publication Number Publication Date
EP1440914A1 true EP1440914A1 (de) 2004-07-28
EP1440914B1 EP1440914B1 (de) 2007-03-28

Family

ID=9951796

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04250389A Expired - Lifetime EP1440914B1 (de) 2003-01-24 2004-01-23 Kartusche für die Zubereitung eines Getränkes

Country Status (6)

Country Link
EP (1) EP1440914B1 (de)
AT (1) ATE358073T1 (de)
DE (1) DE602004005507T2 (de)
DK (1) DK1440914T3 (de)
ES (1) ES2283944T3 (de)
GB (1) GB2397502B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9783361B2 (en) 2013-03-14 2017-10-10 Starbucks Corporation Stretchable beverage cartridges and methods
US9877495B2 (en) 2015-01-09 2018-01-30 Starbucks Corporation Method of making a sweetened soluble beverage product
US9919864B2 (en) 2010-06-11 2018-03-20 Koninklijke Douwe Egberts B.V. Cartridge and method for the preparation of beverages
US9932168B2 (en) 2011-03-08 2018-04-03 Kraft Foods R & D, Inc. Beverage delivery pod and methods of use and manufacture
US10442610B2 (en) 2014-03-11 2019-10-15 Starbucks Corporation Pod-based restrictors and methods

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102648234A (zh) 2009-12-08 2012-08-22 国际纸业公司 由生物基材料的反应性挤出产物制得的热成型制品
USD694620S1 (en) 2011-03-08 2013-12-03 Kraft Foods R&D, Inc. Beverage cartridge
USD708057S1 (en) 2012-09-10 2014-07-01 Kraft Foods R & D, Inc. Beverage cartridge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471689A (en) * 1981-02-03 1984-09-18 Unoper S.R.L. Disposable cartridge for use in beverage extracting and dispensing machines
EP0272922A2 (de) * 1986-12-23 1988-06-29 General Foods Limited Getränkeverpackung
EP0455337A1 (de) * 1990-03-30 1991-11-06 Kraft Jacobs Suchard Ltd. Verfahren zur Getränkezubereitung
WO2001058786A1 (en) 2000-02-14 2001-08-16 Kraft Foods Uk Ltd. Cartridge for the preparation of whipped beverages

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9007132D0 (en) * 1990-03-30 1990-05-30 Gen Foods Kraft Ltd Packages containing comestibles
GB9316717D0 (en) * 1993-08-11 1993-09-29 Gen Foods Ltd Cartridge and method for the preparation fo whipped beverages
JP2000093309A (ja) * 1998-09-24 2000-04-04 Sanden Corp 粉末飲料密封カートリッジ
IT1307241B1 (it) * 1999-04-08 2001-10-30 Lavazza Luigi Spa Cialda a perdere per l'uso in una macchina per l'estrazione el'erogazione di bevande.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471689A (en) * 1981-02-03 1984-09-18 Unoper S.R.L. Disposable cartridge for use in beverage extracting and dispensing machines
EP0272922A2 (de) * 1986-12-23 1988-06-29 General Foods Limited Getränkeverpackung
EP0455337A1 (de) * 1990-03-30 1991-11-06 Kraft Jacobs Suchard Ltd. Verfahren zur Getränkezubereitung
WO2001058786A1 (en) 2000-02-14 2001-08-16 Kraft Foods Uk Ltd. Cartridge for the preparation of whipped beverages

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9919864B2 (en) 2010-06-11 2018-03-20 Koninklijke Douwe Egberts B.V. Cartridge and method for the preparation of beverages
US9932168B2 (en) 2011-03-08 2018-04-03 Kraft Foods R & D, Inc. Beverage delivery pod and methods of use and manufacture
US9783361B2 (en) 2013-03-14 2017-10-10 Starbucks Corporation Stretchable beverage cartridges and methods
US10442610B2 (en) 2014-03-11 2019-10-15 Starbucks Corporation Pod-based restrictors and methods
US9877495B2 (en) 2015-01-09 2018-01-30 Starbucks Corporation Method of making a sweetened soluble beverage product
US10820607B2 (en) 2015-01-09 2020-11-03 Starbucks Corporation Soluble beverages with enhanced flavors and aromas

Also Published As

Publication number Publication date
DE602004005507T2 (de) 2007-12-13
GB2397502A (en) 2004-07-28
GB2397502B (en) 2005-06-29
GB0301733D0 (en) 2003-02-26
ATE358073T1 (de) 2007-04-15
EP1440914B1 (de) 2007-03-28
ES2283944T3 (es) 2007-11-01
DE602004005507D1 (de) 2007-05-10
DK1440914T3 (da) 2007-08-06

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