Woven fabric for airbag
Abstract
An object of the present invention is to provide a woven fabric for an airbag which is of low cost, is excellent in accommodability, and has air permeability satisfying the human body initial constraining performance. The present invention provides a woven fabric for an airbag comprising a synthetic fiber woven fabric having a cover factor represented by the equation 1 of 2000 to 2500 in which at least one side thereof is coated with a synthetic resin, wherein air permeability of the woven fabric under a pressure difference of 100 kPa is 0.01 to 1.00 L/cm 2 /min, and a resin film is present at an upper part of a single yarn at a thickness of 2 μm or less on a central cross section of a weaving yarn part, while a resin film is present at an upper part of a single yarn at a thickness of 2 to 30 μm on a cross section at a border between weaving yarn parts.
Claims
exact text as granted — not AI-modified1 - 7 . (canceled)
8 . A woven fabric for an airbag comprising a synthetic fiber woven fabric having a cover factor represented by the equation 1 of 2000 to 2500 in which at least one side thereof is coated with 0.1 to 8.0 g/m 2 of a polyamide-based resin, wherein air permeability of the woven fabric under a pressure difference of 100 kPa is 0.01 to 1.00 L/cm 2 /min, and a resin film is present at an upper part of a single yarn at a thickness of 2 μm or less on a central cross section of a weaving yarn part, while a resin film is present at an upper part of a single yarn at a thickness of 2 to 30 μm on a cross section at a border between weaving yarn parts.
Cover
factor
=
[
warp
density
(
number
/
2.54
cm
)
×
√
(
warp
fineness
(
dtex
)
×
0.9
)
]
+
[
weft
density
(
number
/
2.54
cm
)
×
√
(
weft
fineness
(
dtex
)
×
0.9
)
]
(
equation
1
)
9 . The woven fabric for an airbag according to claim 8 , wherein a coating amount of the polyamide-based resin is 1.0 to 8.0 g/m 2 in terms of a mass after drying.
10 . The woven fabric for an airbag according to claim 8 , wherein the polyamide-based resin is in a form of a resin composition containing a water-soluble thickener in the polyamide-based resin, and the woven fabric for an airbag is obtained by coating, on the synthetic fiber woven fabric, an aqueous dispersion comprising the resin composition and having a viscosity of 5 to 200 dPa·s, followed by drying.
11 . The woven fabric for an airbag according to claim 8 wherein the polyamide-based resin has a polyether compound of a number average molecular weight of 100 to 5000 as a soft segment.
12 . The woven fabric for an airbag according to claim 11 , wherein the polyether compound in the polyamide-based resin is amino-modified.
13 . The woven fabric for an airbag according to claim 11 , wherein the polyamide-based resin is a polyether polyamide copolymer composed of a soft segment and a hard segment, the soft segment consists of polyether polyamide composed of a polyether diamine compound represented by the following general formula (I) and a dicarboxylic acid compound represented by the following general formula (II), and the hard segment consists of a polyamide composed of an aminocarboxylic acid compound represented by the following general formula (III), and/or a lactam compound represented by the following general formula (IV).
[Chemical formula 1]
H 2 NR—O n R—NH 2 (I)
wherein R represents a straight or branched alkylene group of a carbon number of 2 to 3, and n represents a numerical value of 13 to 26, [Chemical formula 2]
HOOC—R 1 —COOH (II)
wherein R 1 represents a tethering group comprising a hydrocarbon chain, [Chemical formula 3]
H 2 N—R 2 —COOH (III)
wherein R 2 represents a tethering group comprising a hydrocarbon chain,
wherein R 3 represents a tethering group comprising a hydrocarbon chain,
14 . The woven fabric for an airbag according to claim 10 , wherein the water-soluble thickener is a cellulose-based derivative.Cited by (0)
No later patents cite this yet.
References (0)
No backward citations on record.