Abstract: An OPW airbag having two opposing fabric layers made of warp and weft threads with at least one spacer that delimits the spacing of a chamber delimited by the fabric layers in the inflated state of the airbag. The spacer is formed by several of the warp and/or weft threads, so-called tethering threads, which, relative to the inflated state, extend from each layer in the direction of the opposing layer and are connected to warp and/or weft threads of the opposing layer. When warp tethering threads enter the opposing fabric layer, they each initially link with n weft threads and then float over at least n+1 weft threads in the interior of the chamber. When weft tethering threads enter the opposing fabric layer, they initially link with n warp threads and then float over at least n+1 warp threads in the interior of the chamber.

Abstract: A seam construction for a woven fabric for an OPW airbag, in particular for person restraint systems, which seam construction is characterized by a weaving seam having a single-layer region which is surrounded by an at least two-layer region, the individual layers of which have in each case a looser woven structure than the single-layer region.

Abstract: The invention relates to a method for the production of an air bag, more particularly a one-piece woven (OPW) air bag, comprising single layer and double layer areas, a top and bottom outer surface and a coating in at least certain areas. The invention is characteristic in that the single layer area is sealed in such a way that said areas are substantially impermeable to fluids.