A technical problem to be solved by the present invention is to provide a non-coated fabric for airbags and a coated fabric for airbags that are both less likely to have yarn slippage after being sewn, and that can be compactly stored; and airbags using these fabrics. The fabric for airbags according to the present invention is a non-coated fabric for airbags or a coated fabric for airbags that both have a crimp ratio of 12% or more in the warp direction, and a crimp ratio of 61 or less in the weft direction.

An OPW airbag having warp and weft threads woven together in at least three woven fabric layers: a lower fabric layer, an upper fabric layer, and a middle fabric layer therebetween. The weft threads of the middle fabric layer emerge from the middle fabric layer in a first partial region of the airbag and are tied partially to the upper fabric layer and partially to the lower fabric layer. The warp threads of the middle fabric layer emerge from the middle fabric layer in the first partial region of the airbag and float freely between the lower fabric layer and the upper fabric layer. The weft and warp threads of the middle fabric layer are incorporated into the lower fabric layer or into the upper fabric layer in a second partial region of the airbag or are tied to the lower or upper fabric layer at a few attachment points.

A base fabric for airbag is formed by a hollow weave in which a warp yarn and a weft yarn are woven to provide a bag portion having two woven fabric layers and a closing portion having one woven fabric layer, and includes a positioning hole. The positioning hole is formed by the closing portion on a peripheral edge thereof, and a non-weave portion in which the warp yarn and the weft yarn are not woven in an inner side of the closing portion.

An airbag fabric made of polyamide filaments, wherein the polyamide filaments are made of at least 60% by weight of a bio-based monomer.

This invention provides a silicone-coated fabric for airbags in which creases can be easily formed by applying heat and pressure, and that can be stored compactly. More specifically, the invention provides a silicone-coated fabric comprising a silicone-based resin coated on one surface of a synthetic fiber woven fabric, and a thermoplastic resin adhering to a non-silicone coated surface, which is not coated with the silicone-based resin, wherein the adhesive strength between the non-silicone coated surfaces is 0.01 to 100 N/cm.

An uncoated woven fabric of yarn formed from synthetic fibers woven in the warp direction and weft direction to form a top surface and a bottom wherein the fabric is treated in order to permanently modify the fabric surface structure such that fibrillous or apical structures extend approximately normal to the surface of the fabric, and at least a portion of the yarn on the top surface and/or at least a portion of the yarn on the bottom surface have warp and weft fibers which are melt fused together at their intersections, and a majority of the yarn on the top surface and/or a majority of the yarn on the bottom surface have fibers with a permanently modified cross-section that are fused together, is provided. Methods for production and use of this fabric in application to products such as automobile airbags, sailcloths, inflatable slides, temporary shelters, tents, ducts, coverings and printed media are also provided.

A non-coated air bag fabric according to the present invention is woven using fibers containing polyethylene terephthalate as a main raw material, the fabric has a cover factor of 2350 or more, and a single fiber fineness of a yarn that constitutes the fabric is 2.0 dtex to 4.0 dtex inclusive.

A non-coated air bag fabric is a fabric constituted by synthetic fibers, and the fabric has a cover factor of 2300 or more, a height difference between a recess and a protrusion on a surface of the fabric is less than 130 μm, and a P ratio expressed by the following equation is 0.85 to 1.15 inclusive. The P ratio=HP.sub.100/HP.sub.80 where HP.sub.80 indicates air permeability after a load is applied to the fabric under a condition of 80° C., and HP.sub.100 indicates air permeability after a load is applied to the fabric under a condition of 100° C.

Provided is an airbag base fabric that is a woven fabric constituted by a yarn containing polyethylene terephthalate as the main raw material, the yarn constituting the woven fabric having a total fineness of 280 to 500 dtex and a single fiber fineness of 1.0 to 3.9 dtex, the woven fabric having a cover factor of 2400 to 2800, and the D-value calculated from the thickness D.sub.1 of a single sheet of the base fabric and the thickness D.sub.10 of ten sheets of the base fabric that are stacked together being 0.9 or less, where the D-value is calculated using a formula A below:
D=D.sub.10/(D.sub.1×10).  Formula A:

The present disclosure relates to a multi-layer fabric, and an airbag formed of the multi-layer fabric. The multi-layer fabric can provide an airbag capable of sufficiently protecting a driver or a passenger by minimizing damage caused by broken glass fragments when a vehicle is overturned.