Load leveling yarns and webbings

D - Textiles – Paper – 02 – G

Patent

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Details

D02G 3/02 (2006.01) B60R 22/00 (2006.01) B60R 22/12 (2006.01) D01F 6/62 (2006.01) D01F 6/84 (2006.01) D02J 1/22 (2006.01) D03D 1/00 (2006.01) D03D 15/00 (2006.01)

Patent

CA 2284212

The present invention provides load leveling and impact energy absorption webbing comprising warp yarn. If the webbing is used in seat belts, the webbing provides load leveling behaviour from about 450 pounds (about 2,000 Newtons) to about 1,800 pounds (about 8,000 Newtons) in vehicle collision. The yam comprises a multiplicity of fibers, all of said warp yams having substantially the same force-displacement profile, are made from polymer having a glass transition temperature in the range from about -40 °C to about +70 °C, and are not made from polybutylene terephthalate homopolymer.

La présente invention concerne, non seulement des sangles à effet de répartition de charge et d'absorption de l'énergie de choc, mais aussi le fil de chaîne utilisé à cet effet. Si la sangle est utilisée dans des ceintures de sécurité de véhicule, elle adopte un comportement de répartition de charge allant d'environ 450 livres (environ 2.000 Newtons) à environ 1.800 livres (environ 8.000 Newtons) en cas de collision entre véhicules. Le fil de chaîne de l'invention est constitué d'une pluralité de fibres, l'ensemble des fils de chaîne considérés présentant sensiblement le même profil de déplacement de forces. Ces fils, qui sont faits en un polymère dont la température de transition vitreuse se situe entre environ -40 DEG C et environ +70 DEG C, ne sont pas faits en un homopolymère du polybutylène téraphthalate.

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