| 摘要 |
PROBLEM TO BE SOLVED: To prevent remaining liquor from being oxidized without requiring troublesome work. SOLUTION: A bung hole 23 with a valve 27 for pouring a liq. L, an introducing hole 24 for introducing open air A into a container 10 and an expanding body 30 connected with this introducing hole and expanded by the introduced air and intercepting the introduced air and the liq. are provided. The expanding body is removable to the introducing hole. The expanding body is formed in such a way that the vol. before expansion is smaller than or about the same as the vol. of an empty space in the container when it is sold and the max. expandable vol. is larger than or about the same as the vol. of the container. |
