| 摘要 |
An oxygen absorbent packet comprising an oxygen absorbent packaged and sealed in a double packaging material 6 comprised of a gas-permeable outer material layer 1 composed of a plastic film or transparent paper, a gas-permeable sealing layer 2, an inner material layer 3 composed of gas-permeable paper or nonwoven cloth, and a gas-permeable sealing layer 4, and also containing an air layer 5 between layers and 1 and 2 or between layers 2 and 3. |
