| 摘要 |
To strongly bond synthetic resin sheets which constitute together an air bag, a circular front panel 2 made of synthetic resin and a circular rear panel 3 made of synthetic resin having an opening 4 at the center thereof through which an inflator is inserted are bonded to each other with adhesive resin 5 to form the air bag 1. The peripheral edge of the front panel 2 is positioned outside the peripheral edge of the rear panel 3. The adhesive resin 5 adheres to the peripheral end face 2s and an inner surface 2i of the front panel 2 and to the peripheral end face 3s and an outer surface 3a of the rear panel 3. The adhesive resin 5 has a concave stepped portion 6 extending along the outer periphery at the corner between the outer peripheral surface and a rear panel-side surface of the adhesive resin 5.
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