To provide a plug member capable of supplying a gas such as air into a container in the state of plugging the container, thereby presenting a function capable of supplying liquid for internal use such as a nutritional supplement or a medicine inside the container enterally or orally to a human body by natural gravity, and plugging various injection devices in different sizes by one piece for such a function further.
The plug member of a container opening part having the plugging structure of the container opening part is provided with a disk-shaped member which can be inserted and held inside the container, the disk-shaped member present adjacently to the disk-like member for closing the container opening part outside the container, and a standing wall joining the disk-shaped members. The standing wall is constituted by being joined to a plurality of streaky ribs formed by being erected on the surface of the disk-shaped member, and the disk-shaped member is constituted as the one capable of introducing the gas into the container in the state of being held by the container.
HONGO SUSUMU
SATO YOSHINORI
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