| 摘要 |
The moulded screw-on bottle cap, is equipped with a security strip and removed from its mould by unscrewing. The security strip is made with inner projections (11) and a double conical outer surface, and pushed outwards by the elements of the mould when the cap is unscrewed from it. The mould comprises an inner core (20) and an outer cup in three sections. After the cap has been moulded, the first of the cup sections is removed, and the other two (22,25) are separated, allowing the security strip (10) to be flexed outwards as the cap is removed from the mould.
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