| 摘要 |
<p>A dispensing closure (18) for a container (10) of liquid product (70, 72), which is sealed by a piercable diaphragm (16). The closure includes a piercing member (24), which is moveable through a predetermined distance towards the container and which has a cutting edge arranged to pierce the diaphragm to form a dispensing aperture. At the end of its movement towards the interior of the container, the piercing member is arranged to plug the dispensing aperture against escape of the product when the container is inverted prior to dispensing. The closure is particularly useful for liquid products which tend to separate into a lighter (70) and heavier (72) fraction during storage. The closure prevents dripping of the lighter fraction when the container is inverted, and allows the heavier fraction to displace the lighter fraction adjacent to the dispensing aperture before dispensing occurs.</p> |
