| 摘要 |
PURPOSE:To produce a lightweight air bag having no possibility of burst in its peripheral part and having excellent containment properties by a method wherein the sides of respective folded parts are mutually overlapped and the overlapped parts are mutually bonded to be formed into a bag shape and an inflator mounting part is provided to the center of the bag-shaped body on the side of the overlapped parts. CONSTITUTION:The corner parts of a regular tetragon are folded so as to exceed 1/2 the length of one side 1 of the regular tetragon. That is, said corner parts are folded in quantity such that the sides forming the right angle of each of right-angled triangles generated by folding are mutually overlapped with the sides 2 of the next folded parts. Overlap quantity is pref. about 1-6 cm as an overlap width. Therefore, the folding quantity becomes 0.5-3 cm + the length 1/2 that of one side of the rectangular tetragon. When the mounting part of an inflator 6 is provided to the center of the overlapped parts, the folding quantity of square cloth is set to about 4-8cm + the length 1/2 that of one side of the cloth. By this constitution, an air bag having no possibility of burst is obtained. |
