Kunio Nishimura

US Patent:

55409652, Jul 30, 1996

Filed:

Jul 10, 1995

Appl. No.:

8/454203

Inventors:

Kunio Nishimura - Scarsdale NY
Shiro Kumakawa - Chiba, JP
Koji Sato - Ibaraki, JP
Hideo Nakagawa - Takatsuki, JP

Assignee:

Teijin Limited - Osaka

International Classification:

B29D 2200

US Classification:

428 361

Abstract:

A woven fabric useful for air bags capable of smoothly opening in an initial stage of inflation and having a high burst strength and an excellent safety satisfies all the requirement that (A) a stress strain curve of the woven fabric in at least one of the warp and weft directions is a substantially downwardly convex curve, where the elongation. epsilon. is in the range: 1%. ltoreq. epsilon. ltoreq. 20%; (B) where the elongation. epsilon. is in the range:. epsilon. ltoreq. 10%, the tensile strength S(. epsilon. ) of the woven fabric is 10 to 100 kg/3 cm in both the warp and weft directions; and (C) the woven fabric has a tensile toughness of 2,000 to 4,000 kg. %/3 cm in both the warp and weft directions, the tensile toughness being represented by an area of a region, in a graph showing a stress-strain curve of the woven fabric in each of the warp and weft directions, defined by the stress-strain curve and an abscissa corresponding to a stress of zero.