Patent ID: 8348305

Claim:
An airbag mountable on a vehicle comprising: a body cloth made of polyamide woven fabric and constituting a circumferential wall of the airbag for inflation into a bag shape when fed with inflation gas, the body cloth including on an inner surface thereof: a bond area having a coating layer of polyamide elastomer and more than one supplementary cloths directly or indirectly bonded to the body cloth on the bond area such that the bond area has a laminated structure, each of the supplementary cloths forming the laminated structure and being made of polyamide woven fabric bonded using the polyamide elastomer of the coating layer as heat sealable adhesive; an extended area having a same coating layer of polyamide elastomer as on the bond area, the extended area being arranged in such a manner as to be exposed to inflation gas upon airbag inflation such that the coating layer acts as a protective membrane for preventing gas leakage; and an uncoated area that has no coating layer thereon, wherein: the bond area includes an adhesion area between the component cloths that is formed of the coating layer as heat sealable adhesive and bonds a pair of the component cloths together, the adhesion area is formed between a pair of component cloths immediately adjoining each other or between a pair of component cloths that have at least one other component cloth interposed and at a part of the other component cloth where there is no cloth, and the base cloth and all the supplementary cloths are bonded together without slippage from one another in a direction orthogonal to a layering direction of the cloths.