| 摘要 |
PROBLEM TO BE SOLVED: To facilitate transportation or recovery of a bag structure and eliminate a troublesome handling when dusts are put into the bag which is applied as a convenient dust bag used at a place such as a party site, an outdoor meeting location and an out door concert site and other places where many people gather temporarily. SOLUTION: This bag structure is made such that a flexible bag 1 is provided with a bottom surface and side surfaces 3. The upper end of the side surface 3 is provided with a bag opening 4. An air holding chamber 7 is formed inside the side surface 3. Air is charged in the air holding chamber 7 to cause the bag 1 to have a cubic shape and then the bag opening 4 can be opened.
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