Airbag fabrics woven from slit-film polymeric tapes
First Claim
1. A woven slit film-based fabric suitable for use in manufacturing vehicle airbags, said fabric being woven from a plurality of machine direction-drawn thermoplastic polymer warp tapes having a width of from about 3 to about 15 mm and a plurality of machine direction-drawn thermoplastic polymer weft tapes having a width of from about 3 to about 15 mm;
- said machine direction-drawn warp and weft tapes being prepared from a thermoplastic polymer film and having a tensile strength of at least about 200 MPa; and
said fabric having a basis weight of from about 40 grams/m2 to about 140 grams/m2, wherein the thermoplastic polymeric film from which said warp and weft tapes are prepared comprises a polyamide film.
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Accused Products
Abstract
Disclosed herein is the preparation of woven fabrics suitable for use in manufacturing vehicle airbags. Such fabrics are woven from a plurality of polymeric, e.g., polyamide, warp and weft tapes which have preferably been slitted, preferably in the machine direction, from a thermoplastic polymer film, and preferably from such a film which has been drawn at least in the machine direction. The resulting fabrics exhibit both the relatively low basis weight, stiffness and small packing volume typical of nylon films, and the relatively high tear strength and high damage tolerance of yarn-based woven airbag fabrics.
35 Citations
21 Claims
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1. A woven slit film-based fabric suitable for use in manufacturing vehicle airbags, said fabric being woven from a plurality of machine direction-drawn thermoplastic polymer warp tapes having a width of from about 3 to about 15 mm and a plurality of machine direction-drawn thermoplastic polymer weft tapes having a width of from about 3 to about 15 mm;
- said machine direction-drawn warp and weft tapes being prepared from a thermoplastic polymer film and having a tensile strength of at least about 200 MPa; and
said fabric having a basis weight of from about 40 grams/m2 to about 140 grams/m2, wherein the thermoplastic polymeric film from which said warp and weft tapes are prepared comprises a polyamide film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- said machine direction-drawn warp and weft tapes being prepared from a thermoplastic polymer film and having a tensile strength of at least about 200 MPa; and
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21. A woven slit film-based fabric suitable for use in manufacturing vehicle airbags, said fabric being woven from a plurality of machine direction-drawn thermoplastic polymer warp tapes having a width of from about 4 to about 15 mm and a plurality of machine direction-drawn thermoplastic polymer weft tapes having a width of from about 4 to about 15 mm;
- said machine direction-drawn warp and weft tapes being prepared from a thermoplastic polymer film and having a tensile strength of at least about 200 MPa; and
said fabric having a basis weight of from about 40 grams/m2 to about 140 grams/m2, wherein the thermoplastic polymeric film from which said warp and weft tapes are prepared comprises a polyamide film.
- said machine direction-drawn warp and weft tapes being prepared from a thermoplastic polymer film and having a tensile strength of at least about 200 MPa; and
Specification