Container for pressurised liquids with foam generating device and method of filling

摘要

A beverage package has a bottle (10) with a tapered neck (15) and an openable top (16) sealed by a cap (42). Beverage (17) containing gas in solution in the bottle forms a pressurised head space (18). Floating in the beverage (17) is a hollow insert (1) containing gas under pressure which upon opening of the bottle to prevent the head space (18) to atmosphere creates a pressure differential causing gas to be ejected through a restricted aperture a restricted aperture (4) to release gas from solution in the beverage and create froth. The floating insert (1) has a length greater than the internal diameter of the bottle (10) which prevents it from being rotated longitudinally to ensure that the aperture (4) of the insert will be submerged when the bottle is opened. The insert has laterally extending fins (5) which engage the tapered neck (15) of the bottle to prevent the insert from falling through the open top (16). <IMAGE>