Patent ID: 8919810
Filing Date: 2014-12-30
Classification: B60R,D03D,Y10T

Abstract:
1. An air bag for vehicles comprising a main body part consisting of a base fabric and a sewn part being formed by sewing, with a sewing thread, the main body part into a bag, wherein a difference between an elongation (A) of the sewing thread upon applying a tension of 31.3/a (unit: N/thread) to the sewing thread and an elongation (B) of the base fabric upon applying a tension of 62.5/a (unit: N/stitch) to base fabric, wherein “a” (unit: stitch(es)/cm) is a sewing pitch in the sewn part, is within a range of 0 to 5.0% in both directions of warp and weft, the value of B is less than 2% in both directions of warp and weft, and an air permeability of the sewn part at 40 kPa during an initial stage of development of the air bag is less than 50 mm/cm/sec.