| 摘要 |
PROBLEM TO BE SOLVED: To effectively and efficiently store a particular material requiring air tightness. SOLUTION: The air tight zipper 15 of an airtight flexible container 11 keeping the inside airtight relative to the outside is opened to separate a cover part 14 from a body part 13 and to make its inside open. A powder and granule body 23 requiring air tightness is filled in a flexible container 22 which is not airtight or less airtight than the container 11 to be stored in the container 11 in this condition. By closing the zipper 15, the inside of the container 11 is made airtight for storing the powder and granule body 23, and in the condition, the container 11 is transported.
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