| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a mouth plug with a built-in tamper-resistant opening blade in which a thin brittle bridge connecting a peripheral wall with an tamper-resistant ring is surely and easily cut when a cap is screwed off, and there exists no possibility of leaving the tamper-resistant ring as it is being afloat. <P>SOLUTION: The mouth plug comprises a spout 100 with a built-in cylindrical body 300 and the cap 200 on which the tamper-resistant ring 230 is connected with the bottom end of the peripheral wall through the thin brittle bridge 222. When the cap is screwed off, the thin brittle bridge is broken and the ring is separated from the cap, and the cylindrical body for seal-opening with the seal-opening knife on its lower end and built in the spout, is lowered to break a sealing film and to open a container. A plurality of occlusion protrusion parts 231 are provided in the peripheral direction by equal intervals on the inner peripheral face of the lower end part of the ring of the cap. A plurality of hooking projection parts 113 with a narrower width than a distance between the occlusion protrusion parts of the ring are provided in the peripheral direction so as to be inserted between the occlusion protrusion parts. <P>COPYRIGHT: (C)2004,JPO |
