| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a cushioning filler for packaging having both of elasticity and hardness in spite of an air bag system and excellent in durability and use frequency by employing a check valve having a high performance and a simple structure. SOLUTION: In the cushioning filler for packaging wherein a plurality of air chambers filled with air to be expanded are arranged side by side, large air chambers and small air chambers, which have width sufficiently narrower than that of the large air chambers and of which the side walls are common to those of the large air chambers, are alternately arranged.</p> |
