Airbag
First Claim
1. 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 to which a supplementary cloth made of polyamide woven fabric is 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.
1 Assignment
0 Petitions
Accused Products
Abstract
An airbag includes a body cloth made of polyamide woven fabric and constituting a circumferential wall of the airbag. The body cloth includes on the inner surface a bond area having a coating layer of polyamide elastomer and to which a supplementary cloth made of polyamide woven fabric is bonded, an extended area having a same coating layer of polyamide elastomer as on the bond area, and an uncoated area that has no coating layer. The coating layer on the bond area is used as heat sealable adhesive that adheres the supplementary cloth to the body cloth whereas that on the extend area is arranged in such a manner as to be exposed to inflation gas upon airbag inflation so as to act as a protective membrane for preventing gas leakage.
-
Citations
10 Claims
-
1. 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 to which a supplementary cloth made of polyamide woven fabric is 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
Specification