| 摘要 |
PROBLEM TO BE SOLVED: To provide a tamper-evident mouth plug having an opening blade, which secures the virginity of goods and whose opening can be clearly judged by the appearance thereof when the goods are once opened. SOLUTION: The mouth plug comprises a cap 200, a spout 100 on which the cap is screwed, and a cylindrical body 300 for opening, having an opening blade on the lower end thereof, which is movably incorporated in the interior of the spout. An angle play is provided when the cap and the cylindrical body for opening are in contact with each other in a rotating manner. Thus, when the cap mounted on the spout attached to the container is rotated in the direction of spiral release, the slidably guiding slope 241 of the cap slidably contacts with the slidably guiding slope 301 of the cylindrical body for opening, so that a thin wall fragile rib 223 connected with the lower end of the cap is cut by the rotation of the cap before the cylindrical body 300 for opening starts descending, and a play is provided in a rotational angle between the cap and the cylindrical body 300 for opening in a way that a ring 230 to be fitted to the spout for preventing an illicit opening is separated from the cap. |
