EP0758996B1 - Procede de mise sous pression d'elements rapportes - Google Patents

Procede de mise sous pression d'elements rapportes Download PDF

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Publication number
EP0758996B1
EP0758996B1 EP95918052A EP95918052A EP0758996B1 EP 0758996 B1 EP0758996 B1 EP 0758996B1 EP 95918052 A EP95918052 A EP 95918052A EP 95918052 A EP95918052 A EP 95918052A EP 0758996 B1 EP0758996 B1 EP 0758996B1
Authority
EP
European Patent Office
Prior art keywords
insert
cap
insert body
gas
container
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.)
Expired - Lifetime
Application number
EP95918052A
Other languages
German (de)
English (en)
Other versions
EP0758996A1 (fr
Inventor
David Wilson Pennell
David Neil Wragg
Clive Scott Coleman
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.)
STYGIAN Ltd
Original Assignee
STYGIAN Ltd
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Filing date
Publication date
Application filed by STYGIAN Ltd filed Critical STYGIAN Ltd
Publication of EP0758996A1 publication Critical patent/EP0758996A1/fr
Application granted granted Critical
Publication of EP0758996B1 publication Critical patent/EP0758996B1/fr
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
    • 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 a method of providing a pressurised gas in an insert for release into a beverage.
  • a number of methods have been used to provide an insert with a valve means, charged with pressurised gas, positioned in a sealed beverage can.
  • the gas inside the insert can be charged to super-atmospheric pressure at the time of forming the insert and the insert placed in the beverage can in a super- atmospheric atmosphere. This means that there is no pressure differential across a valve of the insert; no gas will escape from the insert which would otherwise cause a lowering of the internal pressure of the insert.
  • This method requires major alteration to a canning line to be put into effect as a beverage can containing the charged insert must be kept at super-atmospheric pressure during filling and sealing.
  • a second method is to fill the insert with a gas at atmospheric pressure and to increase the pressure of the gas within the insert once it is placed and sealed within the beverage can.
  • An increase in pressure within the insert can be produced by reduction of the volume of the insert or by means of the insert having a gas permeable wall through which gas can enter the insert from the surrounding beverage until the gas pressure within the insert is equal to the pressure of the surrounding beverage.
  • the first method necessitates a reduction of the speed of the canning line.
  • the second method requires the insert either to have moving parts or to be formed of a deformable material, the deformation of which may not be uniform across a number of inserts, or to rely on a gas permeable material for transfer of the gas into the insert.
  • WO-A-92/00896 discloses an insert having a closable orifice for releasing a pressurised gas within a beverage container, the insert comprising an insert cap attached to an insert body in which the insert cap has a first state in which it has a connection portion and a resilient substantially accurate portion and a second, elastically deformed state in which the cap is retained at the insert body by attachment of its connection portion to the insert body to close the insert.
  • EP-A-594 221 discloses a pasteurisation step applied to an insert.
  • the present invention provides a method of providing a pressurised gas in an insert formed, at least in part, of a thermally modifiable plastics material for release into a beverage comprising the steps of:
  • the present invention provides an insert formed, at least in part, of a thermally modifiable plastics material having a closeable orifice for releasing a pressurised gas within a beverage container, the insert comprising an insert cap which can be attached to an insert body in which insert cap has a first state in which it is not attached to the insert body and it has a connection portion and a resilient substantially arcuate body portion with an initially convex surface arranged towards the inset body and a second, elastically deformed state in which the cap is retained at the insert body in by attachment of its connection portion to the insert body at super atmospheric pressure such that the orifice is blocked by a projection member to close the insert characterised in that the pressure surrounding the insert may be reduced to atmospheric pressure, wherein the resilience of the cap causes it to be retained at the insert body to prevent substantial release of pressurised gas from the insert; the insert cap undergoing plastic deformation to assume a third, relaxed, state in response to a raising of temperature of the insert, in which the insert cap is maintained at the
  • the method and apparatus of the present invention cannot be deduced from examination of the insert as provided in a beverage can before, during or after operation of the insert.
  • the projection member is attached to the insert body and the orifice is provided in the cap.
  • the insert body is provided in the form of a cup-shaped member.
  • the cap is deformed around the projection member upon being assembled with the insert body, the projection member acting against the cap to cause it to assume its second state when attached to the insert body.
  • the temperature of the insert within the container is raised by subjecting the container and the beverage therein to a pasteurisation process.
  • the insert cap comprises a ridge on an internal circumference of the insert cap which acts against a rim of the insert body to seal the insert cap against the insert body.
  • a diagrammatic cross section of the insert 10 is shown in Fig 1.
  • the insert has two opposing walls 1, 2.
  • This first wall 1, which is disposed at the top of the insert 10, has an orifice 3 in its centre.
  • the orifice 3 has a surround 4 which co-operates with a top 5 of a projection member in the form of a stem 6 which projects from an internal face 7 of the second wall 2.
  • the first wall 1 is in the form of a cap 8 which clips onto an insert body in the form of a cup shaped member 9 of which the second wall 2 is the base.
  • the cap 8 Prior to assembly of the cap 8 onto the cup shaped member 9, the cap 8, when not subjected to external forces, has a body portion having a curved, convex or arcuate form such that its centre, at which orifice 3 is positioned, curves inwardly in relation to the surrounding rim 12 of the cap 8.
  • the cap 8 is formed of a resilient material and clips onto the cup member 9 with an interference fit between the rim 12 of the cap 8 (which provides a connection portion) and the rim 13 of the cup member 9.
  • the insert 10 is designed such that the composite height h1 of the projecting stem 6 and the orifice surround 4 is of greater height than the distance h2 between the two walls 1,2 at their circumferences including the fully extended inter-locking join of the cap 8 to the cup member 9. This means that the first wall 1 is forced to curve around the stem 6 in a concave manner when the cap 8 is pressed onto the cup member 9 and the top 5 of the stem 6 is forced against the surround 4 of the orifice 3 thereby closing the orifice 3.
  • the resilience of the cap 8 of the insert 10 is such that the insert 10 can be assembled under a pressure of approximately 34 psi and the cap 8 forced onto the cup member 9 enclosing the gas at a pressure of 34 psi within the insert 10.
  • the pressure external to the insert 10 is reduced slowly to atmospheric pressure and the resilience or spring of the cap 8 of the insert 10 is such that substantially no gas escapes from the orifice 3 even though there is a large pressure difference between the pressures inside and outside the insert 10.
  • the resilience of the cap 8 is determined by the dimensions of the cap and flexibility and nature of the material from which it is made.
  • the insert 10 is inserted into the can and the can is filled with a beverage and sealed. After sealing, the can is pasteurised. During pasteurisation the pressure of the beverage inside the can rises considerably due to the rise in temperature. The pressure inside the insert 10 also rises due to the increase in temperature of the gas; however, due to the fact that the pressure of the beverage external to the insert 10 is greater than the internal pressure of the insert 10, no gas escapes from the insert 10 during this time.
  • the plastics material of which the insert is made When the plastics material of which the insert is made is heated, as occurs during pasteurisation, it creeps slightly and as it is under pressure the cap 8 creeps more into the position it is held in by the external pressure in relation to the cup member 9. Due to the creep in the plastics material, the resilience or spring of the cap 8 is weakened a little but, once cooled, the pressure external to the insert 10 is sufficient to ensure that the orifice 3 remains closed until the beverage can is opened.
  • the dimensions of the cap 8 are extremely important. Also, the seal between the cap 8 and the cup member 9 of the insert 10 is very important and a slight ridge 11 on the internal circumference of the cap 8 is provided which acts against the rim 13 of the cup member 9 holding the seal between the cap 8 and the cup member 9 together even when the cap 8 is tensioned and is curved around the stem projection 6.
  • This operation may vary slightly in that the base of the cup member 9 may curve outwardly as well as or in place of the cap 8.

Claims (7)

  1. Procédé de disposition d'un gaz comprimé dans un élément rapporté (10) formé, au moins en partie, d'une matière plastique modifiable thermiquement afin que le gaz soit libéré dans une boisson, le procédé comprenant les étapes suivantes :
    (a) la disposition d'un capuchon (1) d'élément rapporté et d'un corps (2) d'élément rapporté qui peuvent être assemblés pour la formation de l'élément rapporté (10), le capuchon (1) étant disposé dans un premier état dans lequel il comporte une partie de raccordement et une partie de corps élastique pratiquement courbe,
    (b) l'assemblage du corps (2) et du capuchon (1) de l'élément rapporté l'un sur l'autre dans un gaz à une pression supérieure à la pression atmosphérique avec une surface initialement convexe de la partie de corps du capuchon (1) tournée vers le corps de l'élément rapporté par déformation de la partie de corps du capuchon (1), par maintien de celle-ci dans un second état élastiquement déformé sur le corps (2) de l'élément rapporté afin qu'un orifice (3) de l'élément rapporté soit bouché par un organe (6) en saillie qui ferme l'élément rapporté, et par fixation de la partie de raccordement du capuchon (1) sur le corps (2) de l'élément rapporté pour la formation de l'élément rapporté et pour l'incorporation étanche du gaz à une pression supérieure à la pression atmosphérique à l'intérieur du corps de l'élément rapporté,
       caractérisé par
    (c) la réduction de la pression qui entoure l'élément rapporté à la pression atmosphérique, l'élasticité du capuchon (1) provoquant son maintien sur le corps (2) de l'élément rapporté en empéchant la libération importante du gaz sous pression de l'élément rapporté,
    (d) la disposition de l'élément rapporté (10) dans un récipient, le remplissage du récipient d'une boisson, et la fermeture étanche du récipient, et
    (e) l'augmentation de la température de l'élément rapporté (10) à l'intérieur du récipient, afin que le capuchon (1) subisse une déformation plastique et prenne un troisième état relaxé dans lequel il est maintenu sur le corps (2) de l'élément rapporté et dans lequel la réduction de la pression à l'extérieur de l'élément rapporté pratiquement à la pression atmosphérique provoque une déformation du capuchon (1) si bien que le gaz est libéré de l'intérieur de l'élément rapporté (10).
  2. Procédé selon la revendication 1, dans lequel l'organe en saillie (6) est fixé au corps (2) de l'élément rapporté et l'orifice (3) est formé dans le capuchon (1).
  3. Procédé selon l'une quelconque des revendications précédentes, dans lequel le corps (2) de l'élément rapporté est réalisé sous forme d'un organe ayant une configuration de cuvette.
  4. Procédé selon l'une quelconque des revendications précédentes, dans lequel le capuchon (1) est déformé autour de l'organe en saillie (6) après assemblage sur le corps (2) de l'élément rapporté, l'organe en saillie (6) agissant contre le capuchon (1) afin que celui-ci prenne son second état lorsqu'il est fixé au corps (2) de l'élément rapporté.
  5. Procédé selon l'une quelconque des revendications précédentes, dans lequel la température de l'élément rapporté (10) dans le récipient est élevée par application au récipient et à la boisson qu'il contient d'une opération de pasteurisation.
  6. Elément rapporté (10) formé en partie au moins d'une matière plastique qui peut être modifiée thermiquement et ayant un orifice (3) qui peut être fermé afin qu'un gaz sous pression soit dégagé à l'intérieur d'un récipient de boisson, l'élément rapporté comprenant un capuchon (1) d'élément rapporté qui peut être fixé au corps (2) de l'élément rapporté, le capuchon (1) d'élément rapporté a un premier état, dans lequel il n'est pas fixé au corps de l'élément rapporté et il possède une partie de raccordement et une partie de corps élastique pratiquement courbe ayant une surface initialement convexe disposée vers le corps de l'élément rapporté, et un second état élastiquement déformé, dans lequel le capuchon (1) est retenu sur le corps (2) d'élément rapporté par fixation de sa partie de raccordement au corps (2) de l'élément rapporte a une pression supérieure à la pression atmosphérique telle que l'orifice (3) est bouché par un organe en saillie (6) destiné à fermer l'élément rapporté (10), caractérisé en ce que la pression qui entoure l'élément rapporté peut être réduite à la pression atmosphérique, et l'élasticité du capuchon (1) provoque la retenue de celui-ci sur le corps (2) de l'élément rapporté afin que le gaz sous pression ne soit pas notablement libéré en dehors de l'élément rapporté, le capuchon (1) de l'élément rapporté subissant une déformation plastique pour prendre, à la suite d'une élévation de la température de l'élément rapporté (10), un troisième état relaxé dans lequel le capuchon de l'élément rapporté (1) est maintenu sur le corps (2) de l'élément rapporté, le capuchon (1) de l'élément rapporté étant déformable à la suite d'une réduction de la pression extérieure à la valeur de la pression atmosphérique pratiquement de manière que le gaz soit dégagé depuis l'intérieur de l'élément rapporté (10).
  7. Elément rapporté selon la revendication 6, dans lequel le capuchon (1) de l'élément rapporté comporte une arête (11) à une circonférence interne du capuchon (1) de l'élément rapporté, cette arête agissant contre un rebord (13) du corps (2) de l'élément rapporté pour assurer la coopération étanche du capuchon (1) de l'élément rapporté contre le corps (2) de l'élément rapporté.
EP95918052A 1994-05-04 1995-05-04 Procede de mise sous pression d'elements rapportes Expired - Lifetime EP0758996B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9408800A GB9408800D0 (en) 1994-05-04 1994-05-04 Method of pressurising inserts
GB9408800 1994-05-04
PCT/GB1995/001018 WO1995030603A1 (fr) 1994-05-04 1995-05-04 Procede de mise sous pression d'elements rapportes

Publications (2)

Publication Number Publication Date
EP0758996A1 EP0758996A1 (fr) 1997-02-26
EP0758996B1 true EP0758996B1 (fr) 1998-12-09

Family

ID=10754514

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95918052A Expired - Lifetime EP0758996B1 (fr) 1994-05-04 1995-05-04 Procede de mise sous pression d'elements rapportes

Country Status (4)

Country Link
EP (1) EP0758996B1 (fr)
AU (1) AU2413195A (fr)
GB (1) GB9408800D0 (fr)
WO (1) WO1995030603A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2310190B (en) * 1996-02-17 1999-04-28 Lawson Mardon Liquid-foaming insert
DE10258791B4 (de) 2002-12-16 2007-03-22 Ball Packaging Europe Gmbh Flüssigkeitsbehälter-Einsatz mit zeitdeterminierter Positionierung in einer unter Gasdruck stehenden Flüssigkeit
EP1614638A1 (fr) * 2004-07-09 2006-01-11 Ball Packaging Europe GmbH Insert multichambre pour un conteneur à liquide
GB0423237D0 (en) 2004-10-19 2004-11-24 Pandrol Ltd Railway track construction shims and method of constructing railway track
GB0601018D0 (en) * 2006-01-18 2006-03-01 Carbonite Corp Inserts for multiple component containers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE70665B1 (en) * 1989-11-22 1996-12-11 Whitbread & Co Plc Carbonated beverage container
GB9015216D0 (en) * 1990-07-10 1990-08-29 Price Dev Ltd E J A beverage package
GB9300143D0 (en) * 1993-01-06 1993-03-03 Allied Breweries Limited Foam production
GB9316317D0 (en) * 1993-08-06 1993-09-22 Smithkline Beecham Plc Novel container

Also Published As

Publication number Publication date
AU2413195A (en) 1995-11-29
EP0758996A1 (fr) 1997-02-26
WO1995030603A1 (fr) 1995-11-16
GB9408800D0 (en) 1994-06-22

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