| 摘要 |
A cap device having a cap member connected to a threaded outer surface of a neck portion of a container body and an additive containing member connected to one side of the cap member. A cylinder member is formed within the cap device as an integrated body having a space on a upper side of the cylinder member such that the cylinder member connects to the additive containing member. A plurality of first throughholes is formed in a fan shape are formed in the lower side of the cylinder member. A valve plate is rotatably positioned within the cylinder member, and the valve plate has a plurality of second throughholes corresponding in positions with the plurality of the first throughholes of the additive containing member based on a predetermined rotation of the valve plate to selectively open or close the plurality of first throughhole. An opening and closing means is installed and formed around the cylinder and the cap member and the neck portion of the container body so that the valve plate opens and closes the plurality of first throughholes of the cylinder member as the valve plate is rotated.
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