| 摘要 |
PROBLEM TO BE SOLVED: To provide a cap capable of preventing fluid from flowing into an inner seal ring of an opening/closing lid even if a container falls in a state that the opening/closing lid is closed.SOLUTION: The cap comprises: a cap base attached to a mouth part of a container; and an opening/closing lid attached to the cap base. An extraction cylinder provided in a standing state on the surrounding of an extraction hole penetrating an upper wall of the cap base has a tongue-like valve body extending to a direction traversing from a predetermined portion of an inner periphery to inside of the cylinder. On a rear face of the opening/closing lid, a cylindrical inner seal ring for sealing an inner peripheral face of the extraction cylinder of the cap base is suspended. A tip end part of the inner seal ring contacts to or come close to a peripheral edge part of the valve body in the extraction cylinder when closing the lid. |
