Airbag for a restraint system in motor vehicles
AssigneeTRW Automotive Safety Systems GmbH
InventorMartin Kreuzer
Life of this patent
Estimating the term…
Abstract
An airbag for a restraint system in motor vehicles comprises a wall made of fabric. One surface of the fabric is subjected to a plasma treatment in order to increase the heat resistance of the fabric. There is also proposed a method of producing such airbag and a method of inflating it.
Claims10
An air bag for a restraint system in motor vehicles, said air bag comprising a wall made of fabric, the wall having an inner surface which faces a gas volume in an inflated state of the air bag and an outer surface which faces in a direction opposite the inner surface, the improvement consisting in that the inner surface of said fabric is subjected to a heat resistant treatment, the heat resistant treatment being a plasma treatment selected from a group including metallization and fluorination, the plasma treated inner surface being exposed to the gas volume in the inflated state of the air bag.
A method of producing an air bag for a restraint system in vehicles, the method comprising the following steps:
- providing at least one width of fabric;
- treating a surface of said at least one fabric width with a heat resistant plasma treatment selected from a group including metallization and fluorination in one of a microwave reactor and a high-frequency reactor;
- and
- cutting said at least one fabric width into several fabric widths and joining said fabric widths so as to form an air bag with the plasma treated surface of the fabric widths being exposed to a gas volume in an inflated state of the air bag.
A method of inflating an air bag of a restraint system for vehicle occupants, the method comprising the steps of:
- generating a mixture of hot gases from a gas generator, and
- passing said hot gas mixture into said air bag,
- wherein said air bag has a heat resistant plasma treatment selected from a group including metallization and fluorination on an inner surface, and wherein said hot gas mixture impinges on said plasma-treated inner surface.
Dependencies are inferred from the claim text.