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A beverage package and a method of packaging a beverage having gas (preferably at least one of carbon dioxide and inert (nitrogen gases) in solution has a non-resealable container 1 within which is located a hollow pod 4 having a restricted aperture 7 in a side wall. The container is charged with th

A beverage package and a method of packaging a beverage having gas (preferably at least one of carbon dioxide and inert (nitrogen gases) in solution has a non-resealable container 1 within which is located a hollow pod 4 having a restricted aperture 7 in a side wall. The container is charged with the beverage 8 and sealed. Beverage from the main chamber of the container enters the pod 4 (shown at 8a) by way of the aperture 7 to provide headspaces 1a in the container and 4a in the pod 4. Gas within the headspaces 1a and 4a is at greater than atmospheric pressure. Preferably the beverage is drawn into the hollow pod by subjecting the package to a heating and cooling cycle. Upon opening the container 1 by draw ring/region 13, the headspace 1a is vented to atmosphere and the pressure differential resulting from the pressure in the pod headspace 4a causes gas/beverage to be ejected from the pod (by way of the aperture 7) into the beverage 8. Said ejection causes gas to be evolved from solution in the beverage in the main container chamber to form a head of froth on the beverage. The pod 4 is preferably formed by blow moulding and located as a press fit within the container 1 which latter is preferably a can, carton or bottle.

대표청구항 ▼

A beverage package comprising a sealed, non-resealable, container having a primary chamber containing beverage having gas in solution therewith and forming a primary headspace comprising gas at a pressure greater than atmospheric; enclosure means defining a secondary chamber having a volume less tha

A beverage package comprising a sealed, non-resealable, container having a primary chamber containing beverage having gas in solution therewith and forming a primary headspace comprising gas at a pressure greater than atmospheric; enclosure means defining a secondary chamber having a volume less than said primary chamber; restrictor means defining a restricted orifice, said secondary chamber communicating with the beverage in said primary chamber through said restricted orifice; said secondary chamber containing beverage supplied thereto from the beverage in the primary chamber and having a secondary headspace therein comprising gas at a pressure greater than atmospheric so that the pressures within the primary and secondary chambers are substantially at equilibrium; said container is openable to expose the primary headspace to atmospheric pressure, and wherein the secondary chamber is arranged so that upon opening of the container the pressure differential caused by the decrease in pressure at the primary headspace causes beverage in the secondary chamber to be ejected by way of the restricted orifice into the beverage of the primary chamber and said ejection causes gas in the solution to be evolved and form, or assist in the formation of, a head of froth on the beverage. A method of packaging a beverage having gas in solution therewith which comprises providing a container with a primary chamber and a secondary chamber of which the volume of the secondary chamber is less than that of the primary chamber and with the means defining a restricted orifice through which the secondary chamber communicates with the primary chamber, and charging and sealing the primary chamber with the beverage to contain the gas in solution and to form a primary headspace in the primary chamber, and charging the secondary chamber with beverage supplied thereto from the primary chamber by way of said restricted orifice to form a secondary headspace in the secondary chamber whereby the pressures in both the primary and secondary chambers are at equilibrium and gaseous pressures in both the primary and secondary headspaces are at a pressure greater than atmospheric so that, when the container is broached to open the primary headspace to atmospheric pressure, the pressure differential caused by the decrease in pressure at the primary headspace causes beverage in the secondary chamber to be ejected into the beverage of the secondary chamber by way of said restricted orifice and the said ejection causes gas to be evolved from solution in the beverage in the primary chamber to form, or assist in the formation of, a head of froth on the beverage.