| 摘要 |
A tamper-indicating closure is provided of a type wherein a closure cap having a side liner is pushed on-to a threaded finish so as to form complementary threads in the liner for twistably removing the cap. A resiliently expansible plastic ring is held in the cap skirt against rotation and endwise movement relative thereto. An inturned lip on the ring engages under a collar on the finish below the threads when the cap is pushed on. The edge of the lip also engages serrations around the finish. When the cap is twisted for removal, the engagement of the lip under the collar and with the serrations inhibits rise and rotation of the cap. The applied torque causes rupture of a series of frangible bridges forming a band around the skirt, whereafter the upper portion of the cap twists off. |
