DISPENSING CAPS FOR LIQUID CONTAINERS

摘要

A drinking cap constitutes a one-piece moulding of polymeric material including a first circular section tubular portion (2) for connection to the mouth of a beverage container and a second smaller circular section tubular portion (6) situated at least partially within the first tubular portion. The first tubular portion is connected to the second tubular portion by a resilient, annular, integral web (4), in which one or more flow openings (18) are formed. One end of the second tubular portion (6) is closed. The upper or external surface of the web (4) carries a projecting annular first sealing flange (20) at a point intermediate its ends, as seen in axial sectional view. The first and second tubular portion (2, 6) are coaxial and relatively movable in the axial direction between an open position, in which the flow openings (18) are unobstructed, and a closed position, in which the sealing flange (20) is in sealing engagement with the internal surface of the first tubular portion (2). The flow openings (18) are thus prevented from communicating with the atmosphere. When the cap is in the closed position, the free edge of the first sealing flange (20) forms a substantially line seal with the internal surface of the first tubular portion (2).