A method for manufacturing a one-piece woven (OPW) air bag includes providing yarns having a spin finish and warping the yarns on at least one beam of a loom. The yarns are simultaneously woven into a fabric air bag structure having two layer portions defining an inflatable volume and single layer portions forming seams delimiting the inflatable volume. The air bag structure is coated to cover the spin finish. The coated air bag structure is cut to define the one-piece woven air bag.

A method for manufacturing a one-piece woven (OPW) air bag includes providing yarns having a spin finish and warping the yarns on at least one beam of a loom. The yarns are simultaneously woven into a fabric air bag structure having two layer portions defining an inflatable volume and single layer portions forming seams delimiting the inflatable volume. The air bag structure is coated to cover the spin finish. The coated air bag structure is cut to define the one-piece woven air bag.

Methods for production of automobile airbags with decreased air leakage and an increased duration of their inflated state, as well as airbags produced in accordance with these methods are provided.

Methods for production of automobile airbags with decreased air leakage and an increased duration of their inflated state, as well as airbags produced in accordance with these methods are provided.

The present disclosure provides an airbag patch cloth that has superior packability and cutting resistance upon deployment of the airbag, and which is particularly suitable for a curtain airbag. The airbag patch cloth is a woven fabric which satisfies the following equations: P.sub.x=E/(T.sub.x×F.sub.x)×1000, P.sub.y=E/(T.sub.y×F.sub.y)×1000, wherein E indicates the kinetic energy (J) of a block and a blade. In the equations, T.sub.x indicates the average value (mm) of a torn length in the warp direction, F.sub.x indicates the linear density (dtex) of the warp constituting the fabric, T.sub.y indicates the average value (mm) of a torn length in the weft direction, and F.sub.y indicates the linear density (dtex) of the weft constituting the fabric. At least one of dynamic tear characteristics P.sub.x and P.sub.y is greater than or equal to 0.8.

The present disclosure provides an airbag patch cloth that has superior packability and cutting resistance upon deployment of the airbag, and which is particularly suitable for a curtain airbag. The airbag patch cloth is a woven fabric which satisfies the following equations: P.sub.x=E/(T.sub.x×F.sub.x)×1000, P.sub.y=E/(T.sub.y×F.sub.y)×1000, wherein E indicates the kinetic energy (J) of a block and a blade. In the equations, T.sub.x indicates the average value (mm) of a torn length in the warp direction, F.sub.x indicates the linear density (dtex) of the warp constituting the fabric, T.sub.y indicates the average value (mm) of a torn length in the weft direction, and F.sub.y indicates the linear density (dtex) of the weft constituting the fabric. At least one of dynamic tear characteristics P.sub.x and P.sub.y is greater than or equal to 0.8.

The present invention relates to an airbag base fabric including a woven fabric made from a yarn containing polyethylene terephthalate as the main raw material, the yarn having a single fiber fineness of 1.0 to 3.9 dtex and a total fineness of 280 to 470 dtex, and, in a Raman spectrum obtained by irradiating the yarn with a He—Ne laser with a wavelength of 630 nm, I.sub.x/I.sub.0 being 1.20 or more, where I.sub.x is the spectral intensity at 3083 cm.sup.−1, and I.sub.0=277.4.

The present invention relates to an airbag base fabric including a woven fabric made from a yarn containing polyethylene terephthalate as the main raw material, the yarn having a single fiber fineness of 1.0 to 3.9 dtex and a total fineness of 280 to 470 dtex, and, in a Raman spectrum obtained by irradiating the yarn with a He—Ne laser with a wavelength of 630 nm, I.sub.x/I.sub.0 being 1.20 or more, where I.sub.x is the spectral intensity at 3083 cm.sup.−1, and I.sub.0=277.4.

The present invention is to provide a polyester fabric for airbags famed from a polyester fiber, which can reduce costs, and the polyester fabric for airbags has high restraint performance for receiving the occupant during deployment and maintains the performance at high levels even after aging, while maintaining the mechanical characteristics as a fabric for airbags. The solution to the object is to provide a polyester fabric for airbags having a coating resin on at least one surface characterized in that the polyester fabric has an optimized crimp ratio and has scrub test strokes of 400 or more after aging treatment at 70° C. at 95% RH for 408 hours.

The present invention is to provide a polyester fabric for airbags famed from a polyester fiber, which can reduce costs, and the polyester fabric for airbags has high restraint performance for receiving the occupant during deployment and maintains the performance at high levels even after aging, while maintaining the mechanical characteristics as a fabric for airbags. The solution to the object is to provide a polyester fabric for airbags having a coating resin on at least one surface characterized in that the polyester fabric has an optimized crimp ratio and has scrub test strokes of 400 or more after aging treatment at 70° C. at 95% RH for 408 hours.