| 摘要 |
<p>An openable but sealed container (50) containing a carbonated beverage (52) held under a super-atmospheric pressure includes a hollow insert (10, 12, 70, 80) which contains gas at a super-atmospheric pressure, which has a restricted orifice (22, 79, 84), which floats on the beverage (52), and which includes orientation means (18, 72, 86) which orientates the insert so that the restricted orifice (22, 79, 84) is submerged in the beverage (52). On opening the container (50), gas from inside the insert (10, 12, 70, 80) is jetted via the restricted orifice (22, 79, 84) into the beverage (52) to generate a close-knit creamy head as it is dispensed. The orientation means (18, 72, 86) is symmetrically arranged relative to a vertical plane containing the restricted orifice (22, 79, 84). Using a floating insert and arranging the orientation means in this way ensures that the restricted orifice (22, 79, 84)is always at the lowermost point of the insert. Thus the risk of the orifice being inadvertently exposed within the headspace in the container is minimised especially during dispensing of the beverage.</p> |
