WO1998038111A1 - Liquid-foaming insert - Google Patents
Liquid-foaming insert Download PDFInfo
- Publication number
- WO1998038111A1 WO1998038111A1 PCT/GB1998/000572 GB9800572W WO9838111A1 WO 1998038111 A1 WO1998038111 A1 WO 1998038111A1 GB 9800572 W GB9800572 W GB 9800572W WO 9838111 A1 WO9838111 A1 WO 9838111A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- passage
- insert
- die
- gas
- container
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
- B65D85/72—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
- the present invention relates to a foaming insert for containing a gas inside a pressurised container of liquid, such that when the container is opened, the gas is jetted from the insert to cause foaming of the liquid.
- Such inserts are useful, in particular, for beverages containing dissolved gas and especially for beer, to form a head on the beer.
- GB-A-2280887 discloses an insert, which floats on the liquid in the pressurised container with a closed jetting orifice immersed in the liquid and a closed charging orifice in the headspace above the liquid.
- the orifices are closed by one-way valves.
- the charging orifice valve opens when external pressure exceeds the internal pressure, so that gas from the headspace can enter the insert from the pressurised container.
- the valve closes when equilibrium between the insert and the headspace is reached.
- the jetting orifice valve opens when the internal pressure exceeds the external pressure, so that this valve remains closed during charging.
- pressure is released, so that this valve is caused to open to jet gas into the liquid.
- the insert comprises two moulded plastics shells, which snap fit together, each shell having a central aperture. Each aperture receives an elastomeric, duck-bill type valve, fitted into the aperture and defining the respective orifices.
- the insert is simple to make, except for the need to provide and fit the duck-bill valves. This adds substantially to the cost and there is also a risk of the valves becoming detached, or failing to operate properly.
- the present invention overcomes this problem by avoiding the necessity for valves to be provided.
- an insert having a body defining a chamber for containing gas and usable in a pressurised liquid container, such that when the container is opened the gas escapes from the insert to cause foaming of the liquid, the insert comprising a gas inlet passage to allow gas to enter the insert from a headspace in the container and a gas outlet passage to allow gas to be jetted from the insert into the liquid in the container, the inlet and outlet passages being provided in respective wall formations, a gap being defined between the formations and providing communication between the chamber and both the inlet and the outlet passages, whereby in use, lower viscosity gas from the headspace enters the gap and hence the chamber through the inlet passage in preference to higher viscosity liquid entering the outlet passage, and wherein the inlet passage provides greater resistance to passage of gas then the outlet passage, so that, on release of the pressure in the container, gas is preferentially jetted through the outlet passage.
- the insert is preferably designed to float on the liquid in a container, but it may be provided with projections, which engage the sides of the container, to secure the insert in position.
- Fig 1 shows a cross-sectional view of an assembled insert according to the invention.
- Fig 2 shows a cross-sectional view of a container containing a liquid and the insert of Fig 1.
- the insert comprises an upper moulding 10 and a lower moulding 30, each roughly of hemispherical form, although they may be elongate.
- Each one-piece moulding 10,30 is injection moulded from plastics, such as polypropylene.
- the peripheral edge of the upper moulding 10 has a shaped, peripheral flange 13 and mis snap fits into a corresponding peripheral recess 33 formed in the edge of the lower moulding 30, so as to form a generally spherical housing with a flattened top 40 and flattened bottom 41.
- Alternative means of connection e.g. gluing or heat bonding of the mouldings 10,30 may, however, be used.
- the mouldings 10,30 form a chamber 50 for containing a gas.
- the upper moulding 10 has a central, generally cylindrical tube 14 extending axially from the top 40 of the moulding 10 into the chamber 50.
- the tube 14 is slightly frustoconical, with its wall converging towards the interior of the housing.
- the tube 14 terminates in an end portion 15 having an end wall 15a.
- the end wall has a flat surface 12 external of the tube 14.
- the end wall has an axial, elongate, inlet passage 16 extending therethrough.
- the lower moulding 30 has an external recess 31 in the bottom 41, the end of the recess being defined by a generally annular wall 36 projecting into the recess 31 and closed by an end wall 38. this forms a cup-shaped formation 34 in the interior of the chamber 50.
- the cup- shaped formation 34 conforms to and receives the end portion 15 of the tube 14 of the upper moulding 10.
- the bottom surface 35 of the cup- shaped formation 34 is located adjacent to, but spaced from, the end surface 12 of the tube.
- the bottom wall 38 has an outlet passage 37 extending d rough it and axially aligned with the inlet passage 16 in the end wall 15a of the tube 14.
- the outlet passage 37 is substantially shorter than the inlet passage 16.
- a thin gap 42 is defined between the peripheral exterior of the end portion 15 of the tube and the peripheral interior of the cup-shaped formation 34.
- the gap communicates the chamber 50 with the inlet passages 16,37.
- the end portion 15 of me tube has a more pronounced taper than the rest of the tube and the interior peripheral surface of the annular wall 36 is correspondingly frustoconical, so that the gap 42 converges on the space 43 between the two passages 16,37.
- the inlet passage 16 and the outlet passage 37 are 3mm in diameter.
- the narrow gap 42 is about 0.5mm in depth.
- the inlet passage 16 is at least twice the length of the outlet passage 37, the length of the outlet passage preferably between less than 1mm.
- the inlet and outlet passages (16,37) may be otherwise differently formed to provide greater resistance to gas passage through the inlet passage (16).
- the insert is designed to float on liquid and is self-righting due to its shape and because the lower moulding 30 is made heavier than the upper moulding 10. It is envisaged mat the inlet and outlet passages 16,37 need not be located on the axis of me insert, but may be offset from the axis.
- the insert is inserted in a container of liquid, such as a can of beer, prior to sealing and pressurising the container.
- a container of liquid such as a can of beer
- Such a sealed container 60 is shown in Fig 2, with the insert 100 floating on the liquid
- the inlet passage 16 is open, via the tube 14, to me headspace 62, whereas die outiet passage 37 is open to and immersed in the liquid 61.
- the gas in me inlet passage 16 opposes the liquid adjacent die outlet passage 37 and primarily, gas enters the chamber 50 dirough me gap 42, until equalisation of pressure between the chamber 50 and me interior of the container is achieved.
- the gas preferentially enters me chamber over the liquid, due to its lower viscosity, the resistance to entry of liquid being greater.
- the power of the jet is increased by die convergent configuration of the gap 42, which produces a venturi effect, and die side wall 44 of the space 43 between me passages 16,37.
- the insert has only two parts, which can be simply connected together, so that assembly is extremely simple. Furthermore, the insert has no valves, which may become detached, or fail to operate properly.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Devices For Dispensing Beverages (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98907035A EP1007441A1 (en) | 1997-02-27 | 1998-02-24 | Liquid-foaming insert |
AU63022/98A AU6302298A (en) | 1997-02-27 | 1998-02-24 | Liquid-foaming insert |
JP10537418A JP2000512958A (en) | 1997-02-27 | 1998-02-24 | Liquid whisk insert |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9704132.1 | 1997-02-27 | ||
GB9704132A GB2322614A (en) | 1997-02-27 | 1997-02-27 | Foam-Producing Insert |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998038111A1 true WO1998038111A1 (en) | 1998-09-03 |
Family
ID=10808442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1998/000572 WO1998038111A1 (en) | 1997-02-27 | 1998-02-24 | Liquid-foaming insert |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1007441A1 (en) |
JP (1) | JP2000512958A (en) |
CN (1) | CN1258258A (en) |
AU (1) | AU6302298A (en) |
GB (1) | GB2322614A (en) |
WO (1) | WO1998038111A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10477997B1 (en) | 2013-10-28 | 2019-11-19 | Bryce Bunkers | Carbonated beverage nucleation accessory |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1055614A1 (en) * | 1999-05-18 | 2000-11-29 | Whitbread Plc | Beverage container |
US7228789B1 (en) | 1999-05-18 | 2007-06-12 | Whitbread Plc | Beverage container |
GB0324772D0 (en) * | 2003-10-24 | 2003-11-26 | Farm Produce Marketing Ltd | Floating insert |
JP6847532B2 (en) * | 2017-07-31 | 2021-03-24 | 株式会社吉野工業所 | Foam widget |
JP6932445B2 (en) * | 2017-07-31 | 2021-09-08 | 株式会社吉野工業所 | Foam widget |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996036545A1 (en) * | 1995-05-19 | 1996-11-21 | Scottish & Newcastle Plc | Beverage frothing |
GB2305159A (en) * | 1995-09-14 | 1997-04-02 | Ryford Ltd | A floating device for generating froth, a container for the device, and a method of filling the container |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995005326A1 (en) * | 1993-08-12 | 1995-02-23 | Whitbread Plc | Carbonated beverage container |
ES2098973T3 (en) * | 1993-08-12 | 1997-05-01 | Whitbread & Co Ltd | INSERTION ACCESSORY FOR CARBONATED BEVERAGE CONTAINER. |
-
1997
- 1997-02-27 GB GB9704132A patent/GB2322614A/en not_active Withdrawn
-
1998
- 1998-02-24 CN CN 98804038 patent/CN1258258A/en active Pending
- 1998-02-24 JP JP10537418A patent/JP2000512958A/en active Pending
- 1998-02-24 AU AU63022/98A patent/AU6302298A/en not_active Abandoned
- 1998-02-24 WO PCT/GB1998/000572 patent/WO1998038111A1/en not_active Application Discontinuation
- 1998-02-24 EP EP98907035A patent/EP1007441A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996036545A1 (en) * | 1995-05-19 | 1996-11-21 | Scottish & Newcastle Plc | Beverage frothing |
GB2305159A (en) * | 1995-09-14 | 1997-04-02 | Ryford Ltd | A floating device for generating froth, a container for the device, and a method of filling the container |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10477997B1 (en) | 2013-10-28 | 2019-11-19 | Bryce Bunkers | Carbonated beverage nucleation accessory |
Also Published As
Publication number | Publication date |
---|---|
GB2322614A (en) | 1998-09-02 |
JP2000512958A (en) | 2000-10-03 |
CN1258258A (en) | 2000-06-28 |
GB9704132D0 (en) | 1997-04-16 |
EP1007441A1 (en) | 2000-06-14 |
AU6302298A (en) | 1998-09-18 |
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