| 摘要 |
PROBLEM TO BE SOLVED: To miniaturize a portable container by providing a bellows part capable of expanding/contracting a container body in its width direction on an outside part of the container body, extending the bellows part to a base end part of a cylindrical mouth part, and forming a cylindrical mouth shape-holding part on an upper end part of the cylindrical mouth part to shrink the container according to the change of the content. SOLUTION: A container used for refreshing beverage, comprises a container body 1 and a cap 4. The container body 1 comprises a body part 2 and a cylindrical mouth part 3, and a bellows part 5 to expand/contract the body part 2 in its width direction is formed on the body part 2. The bellows part 5 is provided on both side surfaces and an upper surface of the body part 2, and a bottom part of a container, and extended to a base end part 3B of the cylindrical mouth part 3. In addition, a plurality of engagement parts 10 comprising a projecting part 8 and a recessed part 9 to be engaged with each other are provided on each of surfaces opposite to each other in the container body 1 which are brought close to each other when shrunk. The engagement projecting part 8 and the engagement recessed part 9 are engaged with each other as the body part 2 is shrunk in its width direction, and the shrunk condition of the container can be maintained.
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