D - Textiles – Paper – 01 – F
Patent
D - Textiles, Paper
01
F
D01F 6/60 (2006.01) B60R 21/16 (2006.01) D03D 1/02 (2006.01) D03D 1/04 (2006.01) D03D 15/00 (2006.01)
Patent
CA 2480911
The present invention relates to a polyamide fiber for uncoated airbags, the fineness and stress-strain curve of the monofilaments of which were controlled such that the polyamide fiber can absorb impact energy which occurs instantaneously when the airbags operate. More particularly, the present invention relates to a high strength polyamide fiber consisting of polyamide monofilaments each having a fineness of less than 4 denier and a stress-strain curve where (a) the monofilament elongates less than 5% when subjected to an initial stress of 1.0 g/d, (b) it elongates less than 12% when subjected to a middle stress of 4.5 g/d, and (c) it elongates more than 3% over a tensile strength range from a tensile strength of at least 9.0 d/g to the tensile strength at break of the monofilament, the elongation values being measured at ambient temperature. A fabric produced using the inventive polyamide fiber has high tensile strength and high tear strength, so that it will be useful as an uncoated fabric for airbags.
Lee Chang-Hwan
Yu Je-An
Battison Williams Dupuis
Hyosung Corporation
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