| 摘要 |
Sipper cap (10) includes a cap section (30) with a housing, a nozzle (50) reciprocally movable in the housing and an overcap (70). The sipper cap is adapted to provide a releasable single point seal between the housing and the nozzle capable of preventing passage of liquid through the sipper. The cap section (30) has a neck section (38) that provides a vertical guide for movement of the nozzle member. The point seal is formed between the end of angle surface (44) of an inwardly directed extension (43) and sealing face (57b) on the outer wall of the nozzle (50). The extension (43) also engages with a retention part (56) on a seal piercing part (54) to prevent removal of the nozzle (50) from the sipper cap. The overcap (70) and cap section (30) can each have a tamper evident ring (71, 34).
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