| 摘要 |
<p>PURPOSE:To obtain an air bag used as a heat insulating material or a buffer material and capable of being easily and efficiently produced. CONSTITUTION:An air bag is obtained by successively laminating a pair of polyethylene resin layers 4, 10, a pair of anchor coat layers 6 and a pair of base film layers 2, 12 from the inside to the outside through release layers 8. In this air bag, a check valve not shown in a drawing is arranged between the release layer 8 and the polyethylene resin layer 10 adjacent to the release layer 8 in order to fill the air bag with air and, by introducing air into the air bag from the air injection port of the check valve, the release layer 8 and the polyethylene resin layer 10 are pressed by the pressure of air to be mutually released and, as a result, an air chamber 18 is formed between both layers 8, 10.</p> |
