| 摘要 |
A compact, economical air bag fabric of low air permeability and light mass (METSUKE) is realized by a thermoplastic fiber fabric having a distribution of pores formed by the fibers constructing the fabric, that is, the pore distribution of 2.0 or smaller and air permeability of 2.5 L/cm2/min or lower. By setting a permeating deformation index PI of the thermoplastic fiber to 0.1 to 0.6 and the air permeability of the fabric at the differential pressure of 20 kPa to 1.0 (L/cm2/min) or lower, an economical uncoated air bag fabric of which air permeability is low but increases under the high differential pressure condition in the latter period of development is obtained.
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