| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealed container which can be applied not only to a foam-fill sealed container but also to a preform sealed container and in which there is no need to replace the air in a head space with an inert gas, and further in the case of topping or the like, a space therefor can be ensured. SOLUTION: A deformable part 25 is provided on a bottom wall 22 of a cup-like container body 12. The deformable part 25 can be deformed between an upwardly curved state U, wherein the central portion of the part 25 is raised upward and a downwardly curved state L wherein the central portion is lowered. When a pressure larger than a predetermined magnitude is applied upwardly or downwardly, the part 25 is deformed from the present state U or L reversibly to the other state, while when a pressure smaller than the predetermined pressure is applied, the present state U or L can be maintained.
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