Abstract: A method of packaging a beverage having gas in solution and a beverage package has a container 10 containing the beverage 6 to form a headspace 15. Floating on the beverage 6 is a hollow spherical capsule having a restricted aperture 7. During sealing of the container 10 by a top 20 the headspace 15 is pressurised (by a nitrogen dose 16) and during such pressurisation the insert 1 is raised relative to its natural floating position on the beverage 6 to ensure that the aperture 7 communicates with the headspace 15 to pressurise the chamber of that insert. The aforementioned raising of the insert 1 is preferably achieved by subjecting the insert to a centrifugal force during rotation of the container in seaming the top 20 thereto or by magnetic attraction. Following pressurisation of the headspace 15 the insert is lowered to float naturally on the beverage 6 with its aperture 7 submerged. During pressurisation the insert 1 may take in a minimal volume of beverage from the container.

Abstract: A beverage package and a method of forming such a package defines a primary chamber containing an insert defining a secondary chamber. The insert has a seating in the form of a bore within which is received the lower end of a tube which is fitted to the insert. When the package is charged with beverage such as beer having gas in solution and sealed to form a headspace containing gas at a pressure greater than atmospheric, beer from the primary chamber fills the tube. The secondary chamber contains beverage and gas at a pressure greater than atmospheric and on opening the container the headspace de-pressurises causing beverage and gas from the secondary chamber to be ejected through the tube. A restricted aperture between the bottom end of the tube and an opposing wall of the insert causes froth to be developed in the beverage in the secondary chamber as the beverage flows into the bottom end of the tube. The frothy beverage then flows through the tube into the headspace.

Abstract: A beverage package and a method of forming such a package has a can 1 within a primary chamber 5 of which is located an insert 6 having a secondary chamber 10. The insert has a seating in the form of a bore 11 within which is received the lower end of a tube 15. The tube 15 is fitted to the insert whilst the latter is positioned in the can. When the can is charged with beverage such as beer 20 having gas in solution and sealed to form a headspace 21 containing gas at a pressure greater than atmospheric, beer from the chamber 20 may fill the tube 15. The secondary chamber 10 contains gas at a pressure greater than atmospheric and on opening the container the headspace 21 de-pressurises causing beverage and/or gas from the secondary chamber to be ejected through the tube 15 and such ejection causes froth to be developed in the headspace 21.

Abstract: A beverage package has a can 1 within a primary chamber 5 to which is located an insert 6 having a secondary chamber 10. The insert has a bore 11 within which is received a lower end of a capilliary tube 15. The can 1 contains beverage such as beer 20 having gas in solution and sealed to form a headspace 21 containing gas at a pressure greater than atmospheric. The tube 15 contains beverage and its upper end opens into the headspace 21. The secondary chamber 10 contains gas at a pressure greater than atmospheric and on opening of the container the headspace 21 de-pressurises causing beverage and/or gas from the chamber 10 to displace beverage through the restriction of the capilliary tube 15 directly into the headspace 21 causing froth to develop in the headspace.

Abstract: A beverage package has a sealed container 1 containing beer 11 having gas in solution and forming a headspace 16 containing gas at pressure greater than atmospheric. A hollow insert 7 is located in the container and is responsive to a pressure differential developed on opening the top 5 of the container to inject beer and/or gas therefrom into the beer 11 whereby to liberate gas 17 from solution and form froth in the headspace 16. A baffle plate 12 on the insert 7 restrains the liberation of gas 17 to a minor proporation of the volume of beer 11 so that when the beer is poured into a glass, gas can evolve naturally from the beer to produce "sparkle". As an alternative to the beer and/or gas injection bubble initiation, gas from solution in the minor proporation of the volume of beer may be liberated by contact of that beer with a bubble initiating material.

Abstract: A sealed beverage package has a bottle 1, a neck 4 of which provides a narrow mouth 5. A hollow insert 7 is submerged in beverage 13 in the bottle. A headspace 14 in the bottle is at a pressure greater than atmospheric and when the package is opened to de-pressurise the headspace 14, gas and/or liquid under pressure in the insert 7 is ejected through an aperture 8 into the beverage to cause a head of froth to develop on the beverage 13. The insert 7 is retained in position by an open framework 9 of struts 10 which extend between the insert and a retaining ring 11 that frictionally engages in a bore 6 adjacent to the mouth 5 of the bottle. The insert 7 can be attached to the framework 9 or formed integral therewith.