WO1995025049A1 - Piece d'insertion incorporee dans des recipients a fluide sous pression, par exemple une capsule generant de la mousse - Google Patents

Piece d'insertion incorporee dans des recipients a fluide sous pression, par exemple une capsule generant de la mousse Download PDF

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Publication number
WO1995025049A1
WO1995025049A1 PCT/GB1995/000568 GB9500568W WO9525049A1 WO 1995025049 A1 WO1995025049 A1 WO 1995025049A1 GB 9500568 W GB9500568 W GB 9500568W WO 9525049 A1 WO9525049 A1 WO 9525049A1
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WO
WIPO (PCT)
Prior art keywords
insert
chamber
container
pressure
insert according
Prior art date
Application number
PCT/GB1995/000568
Other languages
English (en)
Inventor
David Neil Wragg
David Wilson Pennell
Clive Scott Coleman
Original Assignee
Impact Systems (Dba) Limited
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 Impact Systems (Dba) Limited filed Critical Impact Systems (Dba) Limited
Priority to AU18979/95A priority Critical patent/AU1897995A/en
Publication of WO1995025049A1 publication Critical patent/WO1995025049A1/fr

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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
    • 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
    • B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials
    • B65D85/73—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials with means specially adapted for effervescing the liquids, e.g. for forming bubbles or beer head

Definitions

  • This invention relates to inserts for inclusion in pressurised fluid containers and in particular to inserts which upon a substantial or sudden reduction in pressure within the container, releases substance into the fluid content of the container, particularly, but not exclusively, to have the effect of causing the formation of a head or frothing of the content of the container.
  • inserts for inclusion in cans of beer or other beverage subjected to a pressure above atmospheric pressure within the interior of the can with the intention of forming a head, or an enhanced head, of froth, preferably of a creamy nature on beer or other beverage.
  • EP-A-227213 WO- A-91/07326, WO-A-92/00896, WO-A-93/24832-4.
  • Objects of the invention are to provide a new or improved insert for inclusion in pressurised fluid containers and to provide a container having such an insert therein and a method of producing a closed container having such an insert therein.
  • an insert for inclusion in a pressurised fluid container, for releasing a substance into the fluid from the insert when the pressure in the container is reduced, comprising a chamber of variable volume for storing the substance and from which the substance is released in response to said reduction in pressure in the container, wherein the chamber comprises a wall part which is configured and constructed:
  • the gas will be at a first pressure when the wall part is in the first position, and the gas will be at an increased pressure when the wall part is approaching the second position, the wall part being configured and constructed so as to move into the second position despite the increased pressure of the gaseous content of the chamber.
  • the movement of the wall part from the first position to the second position may open a valve means to permit of communication between the interior of the insert and the exterior thereof.
  • the wall part may comprise a generally laminar element having a peripheral edge connected to another wall part of the chamber and a medial portion which in said first position is disposed out of a plane containing said periphery in a direction outwardly of the interior of the chamber and which in said second position is disposed out of said plane in a direction inwardly of the chamber. Movement of the medial part between said positions is resisted by elastic stresses in the laminar element.
  • the laminar element may be generally conical or frusto-conical or may be of curvilinear generally dome-shape.
  • the medial part may carry a first valve member which co-operates with a second valve member associated with a further wall part of the chamber whereby movement of the medial part from said first position to said second position causes opening of said valve.
  • the laminar element may have a circular periphery and may be connected at the periphery to said other wall part which may comprise a side wall of the chamber and at its other end the side wall may be connected to a further, end, wall of the chamber with which the second valve member may be associated.
  • the side wall may be generally cylindrical.
  • the end wall may be generally circular.
  • One of said valve members may comprise an opening which is normally closed by engagement therewith of a first portion of the other valve member.
  • the other valve member may have a second portion provided with passage means having an inner end and an outer end whereby when the wall part is in said second position, the inner end is disposed within the chamber of the insert and the outer end is disposed externally of the insert to permit passage of contents of the insert from the interior thereof to the exterior thereof.
  • the first valve member may comprise said other valve member and said second valve member may comprise said one valve member.
  • the insert may comprise two separately made elements, a first element providing said wall part and said first valve member and a second element providing said side wall and said end wall.
  • the second element may comprise a body part and the first element may comprise a lid or cap part thereof which is a snap fit on the body part by virtue of a radially outwardly extending rib formation on the body part and a undercut or recess in a skirt which extends from the wall part to overlap an end portion of the side wall of the body part.
  • the first and second elements may be made by a suitable moulding technique in suitable synthetic plastics materials such as injection moulding of polypropylene.
  • an insert for inclusion in a pressurised fluid container, for releasing a substance into the fluid from the insert when the pressure in the container is reduced comprising a chamber for storing the substance and from which the substance is released in response to said reduction in the chamber, wherein the chamber is provided with a valve means which is closed to prevent communication between the interior of the insert and the exterior thereof when external pressure acting on the insert is below a predetermined pressure and which is opened to permit said communication when the external pressure acting on the chamber increases to a pressure which is not below said predetermined pressure.
  • the valve may be maintained in said open position when the external pressure acting on the insert falls to a pressure below said predetermined pressure from said increased pressure.
  • the insert may be provided with a plurality of transversely extending locating fingers adapted to engage with the internal wall of the container and maintain the insert in a desired position therein.
  • Said second element may also have the locating fingers.
  • the insert may be charged with a desired compressible or a substantially compressible substance such as nitrogen, carbon dioxide or other gas or other gaseous mixture or a mixture of such a gas or gasses and a liquid and/or fine solid particles, all of which are compatible with the contents of the container with which the insert is intended to be used.
  • a desired compressible or a substantially compressible substance such as nitrogen, carbon dioxide or other gas or other gaseous mixture or a mixture of such a gas or gasses and a liquid and/or fine solid particles, all of which are compatible with the contents of the container with which the insert is intended to be used.
  • the substance may be non- oxidising.
  • valve means When the valve means is closed, such contents of the insert will be at a first pressure which may be, for example, atmospheric pressure, or if desired may be below atmospheric pressure or above atmospheric pressure. In this condition, since valve means is closed the contents of the insert are isolated from the exterior and the insert may be transported or stored in this condition.
  • the insert in this condition may be introduced into a container and the container may be charged with its desired fluid content and sealed.
  • valve means When the interior of the container is pressurised to a second pressure at or above a predetermined pressure, for example as a result of the application of heat to pasteurise the contents of the container, the valve means is opened to permit communication between the interior and exterior of the insert.
  • valve means As the pressure in the container falls on cooling after pasteurisation, the valve means remains open and so there will be a corresponding fall in the pressure in the chamber of the insert but the pressure will still remain above atmospheric pressure in both the insert and in the container externally of the insert.
  • a sealed container having therein a beverage and an insert according to either of the preceding aspects of the invention.
  • a method of producing a closed container having therein a pressurised fluid comprising providing a container and an insert having a valve means and a compressible or substantially compressible fluid in the insert at a first pressure, inserting said insert into the container with the valve means in a closed condition, filling the container with fluid, closing the container, subjecting the closed container ⁇ a pasteurisation process to provide a second pressure in the con + ainer which is above the first pressure and which causes the valve means of the msert to open to provide communication between the interior of the insert and the container.
  • FIGURE 1 is a side view of a body part of an insert embodying the invention
  • FIGURE 2 is an end view of the body of Figure 1 in the direction of the arrow A;
  • FIGURE 3 is a side view of a cap part to be used with the body part shown in Figures 1 and 2;
  • FIGURE 4 is an end view of the cap part of Figure 3 taken in the direction of the arrow B;
  • FIGURE 5 is a section on the lines 5-5 of Figures 2 and 4 but showing the parts in an assembled condition and with a wall part in a first position;
  • FIGURE 6 is a cross-section showing an initial stage of introduction of an insert according to Figures 1 to 5 into a container;
  • FIGURE 7 shows a final stage of the insertion procedure referred to in Figure 6;
  • FIGURE 8 is a fragmentary cross-sectional view showing the insert in the container after pasteuri?ation and showing the wall part of the insert in a second position;
  • FIGURE 9 is a cross-section showing the insert in the container during a head forming step.
  • an insert is shown at 10 in Figure 5 and comprises a body part 11 shown in Figures 1 and 2, and a cap part 12 shown in Figures 3 and 4.
  • the parts 11 and 12 are made, in the present example, by injection moulding in a suitable synthetic plastics material such as polypropylene.
  • the body part 11 comprises a cylindrical side wall 13 and a circular disc ⁇ shaped flat end wall 14.
  • the end wall 14 has a central opening 15 of frusto- conical configuration.
  • Formed integrally with the remainder of the body part 11 are four generally radially extending locating fingers 16 having an outer end 17 of part circular configuration having a radius conforming to the radius of the internal surface 18 of a container 19 with which the insert is to be used, see Figures 6 to 9.
  • fingers 16 have been provided in the body illustrated in Figurers 1 and 2 if desired a different number of fingers may be provided, for example two, three or more than four fingers. It is however preferred that there are at least three fingers so as to restrain tilting movement.
  • retaining means may be provided such as, for example, a continuous or substantially continuous or part continuous flange extending radially from the body.
  • such flange or fingers similar to the fingers 16 may be provided which instead of extending radially coplanar with the end wall 14 may be inclined to the wall 14 in a desired direction and may be of curvilinear or other non- rectilinear longitudinal configuration and may extend from the body at a position other than at the periphery of the end wall 14.
  • locating means may be provided wholly or partly on the cap.
  • the side wall 13 is provided with an outwardly extending rib 20 of frusto- conical external configuration.
  • the cap 12 has a wall part 21 which comprises a generally laminar element of frusto-conical configuration having a peripheral part 22 formed integrally with a skirt 23 which overlies the end portion of the side wall 13 of the body part 11 and which is provided with a undercut or recess 24 which snap fits with the rib 20 of the body part 11 to retain the cap and body parts together in gas tight relationship.
  • a suitable sealant and/or adhesive may be provided between the portions of the cap and body parts to ensure that the parts are thus retained in gas tight relationship.
  • the wall part 21 has a medial portion 25 which in a first position, shown in Figures 1 to 7 is disposed out of a plane P containing said peripheral portion 22 in a direction outwardly of the interior 26 of a chamber 27 defined by said wall part and said side and end walls 21, 13, 14 respectively.
  • the medial part 25 carries, by virtue of being moulded integrally therewith, a first valve member 28 in the form of an axially projecting stem provided with an end part 29 having a conical end surface 30 and provided with a larger diameter intermediate portion 31 provided with four orthogonally disposed grooves 32, each groove 32 having an inner end 33 and an outer end 34.
  • the body part and cap part 12 are purged of air or the like in conventional manner, for example under the action of a pressurised nitrogen gas jet.
  • the elements are brought together to the condition shown in Figure 5 in which the cap part and body part are sealingly retained together and the end part 29 extends through the aperture 15 in the end wall 14 and significantly deforms the end wall 14 as shown in Figure 5, and forms a gas tight closure therewith.
  • the conical end surface 30 facilitates penetration of the end part 29 through the opening 15 during assembly of the components.
  • the insert may be charged with nitrogen gas or other desired content, such as carbon dioxide, or other gas which is compatible with the contents of the container with which the insert is to be used, or a mixture of such gases.
  • nitrogen gas or other desired content such as carbon dioxide, or other gas which is compatible with the contents of the container with which the insert is to be used, or a mixture of such gases.
  • the gas or gases may be a non-oxidising gas.
  • the insert may contain a liquid and/or small solid particles of any substance which it is desired to introduce into the contents of the container for any desired purpose.
  • the thus assembled and sealed insert containing the desired substance which term is intended to include any desired combination of suitable substances, may be stored and/or transported to a location where the insert is to be inserted into a container.
  • the insert is introduced axially through the open mouth 35 of the container 19.
  • the container 19 is a can for beer but, of course, it may be any other desired container or any other desired beverage or fluid.
  • the mouth 35 of the container 19 is of restricted diameter compared with the main cylindrical wall part and the fingers 16 flex to permit passage of the insert as shown in Figure 6.
  • the insert is loaded into the container 19 until the medial portion 25 engages a base wall 36 of the container as shown in Figure 7.
  • the locating fingers 16 engage the internal wall 18 of the container 19 and so locate the insert in the position shown in Figure 7.
  • the above described introduction of the insert into the container is simple and can be readily performed with suitable automated mechanism.
  • the insert 10 When the insert 10 has been thus inserted into the empty container 19 the interior of the container is purged of air or the like, for example under the action of a jet of compressed nitrogen gas, and the fluid to be stored in the container, for example beer, is then admitted into the container and the container is sealed in conventional manner.
  • the displacement volume of the insert is constant, so long as the wall part 21 remains in the above described first position, simply by filling the container to the brim a known and fixed volume of beer is put into each container without the need to meter the beer.
  • the container 19 thus containing the insert 10 and the beer, which is pressurised by virtue of containing nitrogen, carbon dioxide or the like in solution, is subjected to a pasteurising operation involving substantial heating of the container.
  • a pasteurising operation involving substantial heating of the container.
  • any residual nitrogen purging gas in the container and the gases that are in solution in the fluid in the container become heated and thereby increase the pressure within the container to, or above, a predetermined pressure at which the differential pressure between the interior 26 and the exterior of the insert acting on opposite sides of the wall part 21 causes the wall part 21 to move from the first position shown in Figures 1 to 7 to a second position shown in Figures 8 and 9.
  • the medial portion 25 is displaced from the plane P onto the opposite side thereof to the first position so that the medial portion 25 is at a position displaced from the plane inwardly of the interior 26 of the plane P.
  • the volume of the chamber 27 is decreased and the substance within the chamber 27 is thus compressed.
  • the extent of movement of the wall part 21 between the first and second positions and thus the extent of change of volume of the chamber 27 is arranged so that the substance in the chamber 27 is compressed to a pressure of, for example, up to about 20 p.s.i. This pressure is below the pressure which will subsist in the interior of the container 18 externally of the chamber 27 during pasteurisation which is typically 80-90 p.s.i.
  • the wall part 21 can move into the second position shown in Figure 8 as a result of the relatively larger external pressure overcoming elastic stresses in the laminar element to cause it to move past a stress maximum condition, when the medial part 25 lies in said plane P, and then to move to the second position shown in Figure 8 as the stress falls.
  • the wall part 21 is maintained in the second position by the stress in the laminar element with which would increase on movement of the wall part 21 toward the first position.
  • the wall part 21 thus provides an over- centre bi-stable element.
  • the grooves 32 are positioned so that the outer ends 34 thereof are disposed outwardly of the end wall 14 of the insert whilst their inner ends 34 are disposed in the interior 26 of the chamber 27 and thus the grooves provide a passageway between the chamber 27 and the container 19.
  • the container Once the container has cooled to ambient temperature the container will be distributed and stored until it has been sold and subsequently may be stored by a purchaser until it is opened.
  • the pressure of the gas within the chamber 27 of the insert is sufficiently greater than atmospheric pressure for the gas and/or beverage to be forced rapidly from the insert through the grooves 32 into the beer in the container 19.
  • the number, and dimensions, of the grooves 32 are carefully arranged to release the gas from the chamber 27 at a controlled rate so as to have the desired effect of causing or enhancing the formation of a head or an enhanced head on the beverage. If desired, any other suitable number and configuration of grooves or other passages to cause formation of a creamy head by injection of the contents of the chamber 27 may be provided.
  • insert may be made in any suitable manner and from any desired number of components.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

Une pièce d'insertion (10), destinée à être incorporée dans un récipient à fluide, sous pression, en vue de libérer une substance dans le fluide lorsque la pression du récipient est réduite, comprend une chambre (27) de stockage de la substance et d'où la substance est libérée en réponse à une réduction de pression dans la chambre. La chambre est pourvue d'une soupape (28) qui est fermée pour empêcher la communication entre l'intérieur et l'extérieur de la pièce d'insertion lorsqu'une pression externe agissant sur ladite pièce d'insertion est inférieure à une pression prédéterminée, et qui est ouverte pour permettre la communication lorsque la pression externe agissant sur la chambre augmente à une pression qui n'est pas inférieure à ladite pression prédéterminée.
PCT/GB1995/000568 1994-03-17 1995-03-16 Piece d'insertion incorporee dans des recipients a fluide sous pression, par exemple une capsule generant de la mousse WO1995025049A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU18979/95A AU1897995A (en) 1994-03-17 1995-03-16 Insert for inclusion in pressurised fluid containers, e.g. foam generating capsule

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9405295.8 1994-03-17
GB9405295A GB9405295D0 (en) 1994-03-17 1994-03-17 Insert

Publications (1)

Publication Number Publication Date
WO1995025049A1 true WO1995025049A1 (fr) 1995-09-21

Family

ID=10752057

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1995/000568 WO1995025049A1 (fr) 1994-03-17 1995-03-16 Piece d'insertion incorporee dans des recipients a fluide sous pression, par exemple une capsule generant de la mousse

Country Status (4)

Country Link
AU (1) AU1897995A (fr)
GB (1) GB9405295D0 (fr)
WO (1) WO1995025049A1 (fr)
ZA (1) ZA952219B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2310190A (en) * 1996-02-17 1997-08-20 Lawson Mardon Liquid foaming insert
JP2009523666A (ja) * 2006-01-18 2009-06-25 カーボナイト コーポレーション 複数構成要素容器用の挿入物

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995009783A1 (fr) * 1993-10-01 1995-04-13 Scottish & Newcastle Plc Canette de boisson dotee d'une capsule generatrice de mousse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991007326A1 (fr) * 1989-11-22 1991-05-30 Whitbread Plc Recipient pour boisson gazeuse
WO1991013007A2 (fr) * 1990-02-21 1991-09-05 E.J. Price (Developments) Limited Recipients de boissons
WO1992000896A1 (fr) * 1990-07-10 1992-01-23 E J Price (Developments) Limited Recipient de boisson gazeuse
WO1993024382A1 (fr) * 1992-06-04 1993-12-09 Scottish And Newcastle Plc Dispositif de moussage de boissons

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991007326A1 (fr) * 1989-11-22 1991-05-30 Whitbread Plc Recipient pour boisson gazeuse
WO1991013007A2 (fr) * 1990-02-21 1991-09-05 E.J. Price (Developments) Limited Recipients de boissons
WO1992000896A1 (fr) * 1990-07-10 1992-01-23 E J Price (Developments) Limited Recipient de boisson gazeuse
WO1993024382A1 (fr) * 1992-06-04 1993-12-09 Scottish And Newcastle Plc Dispositif de moussage de boissons

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2310190A (en) * 1996-02-17 1997-08-20 Lawson Mardon Liquid foaming insert
GB2310190B (en) * 1996-02-17 1999-04-28 Lawson Mardon Liquid-foaming insert
JP2009523666A (ja) * 2006-01-18 2009-06-25 カーボナイト コーポレーション 複数構成要素容器用の挿入物

Also Published As

Publication number Publication date
GB9405295D0 (en) 1994-04-27
ZA952219B (en) 1995-12-12
AU1897995A (en) 1995-10-03

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