Base fabric for airbag and airbag
AssigneeAsahi Kasei Kabushiki Kaisha
InventorFumiaki Ise
Life of this patent
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Abstract
The purpose of the present invention is to provide a base fabric for an airbag and an airbag wherein the strength of sewn parts is high, pressure resistance is superior for an airbag during high-pressure deployment at high speeds, and pressure resistance can be maintained even after passage of time in heat. This base fabric for an airbag is characterized by being formed from woven polyamide fibers, and the retention of sewn part strength in the base fabric with heating before and after heat treatment for 400 hours at 140° C. being 70% or greater.
Claims15
A base fabric for an airbag composed of woven polyamide yarns, wherein the retention rate of the strength of sewn parts of the base fabric before and after heat treatment for 400 hours at 140° C. is 80% or more,
- wherein the difference in crimps of yarns between the warp direction and weft direction of composite yarns composing the base fabric before and after heat treatment for 400 hours at 140° C. is 5.0% or less,
- wherein at least one type of oily component selected from the group consisting of a higher alcohol ester and/or a higher alcohol polyether eater of a carboxylic acid having a thioether group, a nonionic surfactant component and a modified silicone component is imparted to polyamide yarns followed by weaving into a woven fabric,
- wherein a higher alcohol ester and/or a higher alcohol polyether ester of a carboxylic acid having a thioether group is contained in cyclohexane-extracted oily components at 0.01% by weight or more based on the weight of the base fabric, and
- wherein a ratio of weaving density in the warp direction to that in the weft direction (warp direction/weft direction) is 1.00 to 1.09.
Dependencies are inferred from the claim text.