| 摘要 |
PURPOSE: A device for protecting a bridge of a skirt is provided to get rid of a defect that a bridge and a protector of the bridge are molded only by producing a metal mold of a slide method. CONSTITUTION: When a skirt(4) is not moved since a hanging projection(5) is stuck in a round protruded projection formed in a bottle neck when a bottle cap is opened, a bridge(6) is broken so that it is confirmed that the bottle cap has been used. On the other hand, when the skirt is not rotated with a side face(3) since the hanging projection is stuck in the round protruded projection when the bottle cap is assembled in the bottle neck, a side wall projection(8) touches a projection(7) to forcibly rotate the skirt so that the bridge is not broken.
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