| 摘要 |
PURPOSE: To provide a packaging having good impact resistance by allowing gas in a gas collecting cell, into which gas leaks when a first sheet is broken, to flow into a gas releasing cell formed by sealing a second sheet. CONSTITUTION: A packaging material 1 has a double structure comprising a first sheet 2 formed into a square bag-shape and a second sheet 3 formed into a square bag-shape to accommodate the sheet 2. A gas injection port 6 is formed by section sealing part 4 so that a gas collecting cell 5 being a space in the sheet 2 communicates with the outside. Further, the section sealing part 4 has three extensions, each of which extends from each corner of the sheet 2, excluding a corner where a separated part P1 is formed, to respective corner of the sheet 3, so that six gas releasing cells 7 are formed between the sheet 2 and the sheet 3. As a result, even if the sheet 2 breaks, air in the cell 5 flows into the cells 7. |
