| 摘要 |
A security closure (1) for a bottle (2) for good-quality alcoholic beverages which makes any tampering by unauthorized refilling obvious in an unusually visually conspicuous manner comprises a spout (9), a valve (10) formed in the spout (9) for preventing refilling, a sleeve (18) provided with snap-fixing means (23) in engagement with the bottle (2), and a connection (19) between the spout (9) and the sleeve (18), the connection (19) comprising a double ultrasound-welding seam (31 and 32) which forms a fixed joint (30) between the spout (9) and the sleeve (18).
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