Patent ID: 9617664
Date: 2017-04-11
CPC Classifications: B60R,D01D,D01F,D03D,Y10T

Claim:
1. An airbag comprising an airbag fabric, said airbag fabric comprising a polyester fiber, wherein said polyester fiber has an elongation of 0.4% or less at a stress of 1.0 g/d, an elongation of 4.0% or less at a stress of 4.0 g/d, and an elongation of 7.0% or less at a stress of 7.0 g/d, an initial modulus of 105 to 130 g/d at room temperature, a tensile tenacity of 8.2 g/d or more, an elongation at break of 14% or more, a dry heat shrinkage of 5.0% to 6.2%, wherein said polyester fiber is comprised of 60-200 polyester monofilaments, the polyester fiber includes poly(ethylene terephthalate) in the content of 70 mol % or more, a fineness of each of the monofilaments is 4.2 to 7.7 denier, and a total fineness of the polyester fiber is 460 to 600 denier; and wherein said polyester fiber is produced by a process comprising the steps of: melt-spinning a polyester polymer having an intrinsic viscosity of 0.85 dl/g or more at 283 to 295° C. to prepare a polyester undrawn fiber; drawing the polyester undrawn fiber with a total drawing ratio of 5.7 to 6.1; and heat-setting the drawn fiber at a temperature of 215 to 225° C.