| 摘要 |
<p>The invention provides a non-refillable anti-glug fitment for co-operation with the neck portion of a container for liquids, said fitment comprising an outer body (1) adapted to conform to the neck of the container, and formed with a shaped through bore (4) extending from an inlet end (5) to an outlet end (6) and a guard member (3) partially obturating the outlet (6); characterised in that the outlet (6) opens from a chamber (10) defined by the through bore (4) and by opposed spaced apart faces (20.21) of the guard member and a fixed or moveable member (2), and by a plurality of apertures forming part of the through bore (4) which allow fluid flow passed the valve body and in that the total area defined by the apertures is equal to, or less than, the total area of the outlet, thereby to alleviate glugging by providing that air may pass into the neck of the container at a rate equal to, or greater than, the rate at which liquid flows out. The fixed or moveable member is preferably a moveable valve body which cooperates at its periphery with a plurality of radially spaced apertures (16) forming a part of an inlet passage (8) in the open position, but obturated in the closed position by the valve body (2) seating on the valve seat (18).</p> |
