Side curtain airbags or headbags are a recent development in the automotive airbag industry. They aim to reduce injuries, as a result of roll over accidents. A side curtain airbag has to stay inflated for a minimum of six seconds, and to reach this goal, silicone layers of 90g/m~2 and more have to be used. This technique has several draw backs. TRW Occupant Restraint Systems, one of the worlds largest airbag-suppliers, developed together with adhesive company Collano a multi layered thermoplastic composite film to substitute silicone by a much thinner coating with excellent friction and air proof properties. Author will demonstrate how this development was accomplished and which properties have been achieved.
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