| 摘要 |
PURPOSE: A bottle cap in which a sealing member of an undercut shape is integrated is provided to certainly seal a bottle even when the bottle cap is fixed on a bottleneck after the bottle is opened and to enable a user to more easily fix the bottle cap on the bottleneck. CONSTITUTION: A bottle cap comprises; a cap member(110) which is combined with a bottleneck through screwing combination; a bottleneck fixing member(120) which is combined with the lower part of the bottleneck; a horizontal cut line(130) which is formed between the cap member and the bottleneck fixing member; a sealing member(140) which is included on the inner side of the cap member; and a lip(150) which is flexibly included on the lower end of the bottleneck fixing member.
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