| 摘要 |
PURPOSE: Provided is a PET plastic bottle cap with an improved structure in order to help a user including children, physically weak people, and the elderly close the cap more easily without putting so much efforts and strength thereto. CONSTITUTION: The PET bottle cap has inclined frames on the inner side thereof. In particular, the circumferential surface inside of the PET bottle cap is formed of inclined frames at regular intervals. Instead of turning the cap, a user simply presses the cap down to close. In this manner, users who are considered physically weak such as little children and the elderly are able to close the cap more easily and conveniently without putting so much efforts and strength thereto.
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