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Process of making a woven fabric for vehicle airbags

  • US 9,157,173 B2
  • Filed: 07/31/2009
  • Issued: 10/13/2015
  • Est. Priority Date: 08/07/2008
  • Status: Expired due to Fees
First Claim
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1. A process for preparing a slit film-based woven fabric suitable for use in manufacturing vehicle airbags, said process comprising:

  • A) providing a thermoplastic polymeric film having a machine direction and a caliper of from about 80 to about 240 microns;

    B) drawing said film at least in the machine direction using a draw ratio of from about 2to about 6;

    C) slitting said drawn film in the machine direction to form a plurality of thermoplastic polymer tapes each having a width of from about 3 to about 15 mm and a tensile strength of at least about 200 MPa; and

    D) utilizing said plurality of thermoplastic polymer tapes as both warp and weft tapes to weave a fabric therefrom, said fabric having a basis weight of from about 40 grams/m2 to about 140 grams/m2,characterized in that said thermoplastic polymeric film comprises a polyamide film.

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