Inflatable gas bag and method for manufacturing same

B - Operations – Transporting – 60 – R

Patent

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Details

B60R 21/16 (2006.01) B29C 65/00 (2006.01) D03D 1/02 (2006.01) D04B 1/22 (2006.01) D06N 7/00 (2006.01)

Patent

CA 2232293

The invention relates to an inflatable gas bag (10) for an occupant restraint system of a vehicle, in particular of a motor vehicle. In order to avoid the formation of creases in the inflated state, which occurs with conventional gas bags and in order to be able to employ more lightweight textile materials for the manufacture of a gas bag, the gas bag (10) consists of a multilayered textile composite material which comprises at least one layer of a textile material and one layer of a polymer material whose melting range is lower than the melting range of the textile material. The textile composite material is formed into a specified three-dimensional shape which is to develop during inflation of the gas bag (10), and the individual layers of the textile composite material are joined together in this three-dimensional shape.

L'invention a pour objet un sac gonflable (10) pour système de protection des occupants d'un véhicule, notamment d'un véhicule automobile. Afin d'éviter que des plis se forment comme dans le cas de sacs de types connus lorsque ceux-ci sont gonflés, et en vue de pouvoir utiliser des textiles plus légers dans la fabrication d'un sac gonflable, le sac (10) selon l'invention est constitué par un matériau textile composite multicouche, comprenant au moins une couche en matière textile et une couche en un matériau polymère dont la plage de fusion est inférieure à celle de la matière textile. Le matériau composite textile est réalisé de manière à conférer au sac (10) une forme prédéterminée dans l'espace lorsqu'il est gonflé, les différentes couches étant reliées entre elles sous cette forme dans l'espace.

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