| 摘要 |
PROBLEM TO BE SOLVED: To provide a virgin cap having an excessive fastening preventive ratchet for solving the problem of causing liquid leakage due to becoming insufficient in a seal state of a bottle mouth by the cap, when a top plate of the cap swells by excessive fastening.SOLUTION: The synthetic resin virgin cap threadedly engages with a bottle having the bottle mouth for providing a projection on the outer periphery, and the virgin cap comprises a ring member connected to a cap body via a bridge cut when opening, three essential ratchets and the excessive fastening preventive ratchet formed on the inner periphery of the ring member, and the three essential ratchets lock on a bottle side projection when opening, and the excessive fastening preventive ratchet does not lock on the bottle side projection when opening, but acts for preventing the excessive fastening by enhancing resistance by liftably contacting with the bottle side projection when finishing winding fastening. |
