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Fabric for Airbag

a technology of fabric and airbag, which is applied in the direction of weaving, pedestrian/occupant safety arrangements, vehicular safety arrangements, etc., can solve the problems of high manufacturing cost, increased material and increased mass of woven fabric coated with synthetic rubber. , to achieve the effect of low cost and excellent accommodation

Inactive Publication Date: 2011-04-28
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014]The fabric for an airbag of the present invention, even in the case of a low cover factor, by using a woven fabric having a FR value of the equation 2 of 55% or more, is of the low cost, is excellent in accommodability, and can have air permeability satisfying the initial of a human body constraining performance.

Problems solved by technology

However, since a woven fabric coated with these synthetic rubbers is increased in a mass of a woven fabric, is not satisfactory in flexibility, and is of the high manufacturing cost, it has many disadvantages for use in a woven fabric for an airbag.
Further, air permeability is not at a satisfactory level, and improvement is sought.
However, air permeability of the woven fabric for an airbag obtained by this method is not sufficiently satisfactory.Patent Literature 1: JP-A 5-016753Patent Literature 2: JP-A 2001-524624Patent Literature 3: JP-A 4-281062Patent Literature 4: JP-A 11-222776

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

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example 1

[0075]A polyamide 66 fiber of a total fineness of 470 dtex, 72 filaments, and a boiling water shrinkage degree of 5.5% was woven in a water jet room in a plain weaving manner, shrinkage-processed with boiling water, and drying-finished at 110° C. to obtain a woven fabric having a warp density of 46 / 2.54 cm and a weft density of 46 / 2.54 cm. Using a polymer obtained by polymerizing a polyamide 6, a polyethylene glycol-propylamine adduct (number average molecular weight 600) and adipic acid at a molar ratio of 2.5:1:1, an aqueous resin dispersion having a solid matter concentration of 15% by mass was made. Then, to the aqueous dispersion was added carboxymethylcellulose (07326-95, manufactured by Nacalai Tesque) at 3% by mass relative to the aqueous resin, and a viscosity was adjusted to 230 dPa·s. An aqueous dispersion of this resin composition was coated on the woven fabric by knife coating, at a resin amount after drying of 3 g / cm2. Properties of this woven fabric were assessed, and...

example 2

[0076]A polyamide 66 fiber of a total fineness of 350 dtex, 108 filaments, and a boiling water shrinkage degree of 8.5% was woven in a water jet room in a plain weaving manner, shrinkage-processed with boiling water, and drying-finished at 110° C. to obtain a woven fabric having a warp density of 53 / 2.54 cm and a weft density of 53 / 2.54 cm. Using a polymer obtained by polymerizing a polyamide 6, a polyethylene glycol-propylamine adduct (number average molecular weight 1000) and adipic acid at a molar ratio of 2.0:1:1, an aqueous resin dispersion having a solid matter concentration of 10% by mass was made. Then, to the aqueous dispersion was added carboxymethylcellulose (07326-95, manufactured by Nacalai Tesque) at 2% by mass relative to the aqueous resin, and a viscosity was adjusted to 120 dPa·s. An aqueous dispersion of this resin composition was coated on the woven fabric by knife coating, at a resin amount after drying of 4 g / cm2. Properties of this woven fabric were assessed, a...

example 3

[0077]A polyamide 66 fiber of a total fineness of 470 dtex, 72 filaments, and a boiling water shrinkage degree of 5.5% was woven in a water jet room in a plain weaving manner, shrinkage-processed with boiling water, and drying-finished at 110° C. to obtain a woven fabric having a warp density of 43 / 2.54 cm and a weft density of 43 / 2.54 cm. Using a polymer obtained by polymerizing a polyamide 6, adipic acid, and polyethylene glycol (number average molecular weight 600) at a molar ratio of 1.8:1:1, an aqueous resin dispersion having a solid matter concentration of 6% by mass was made. Then, to the aqueous dispersion was added carboxymethylcellulose (07326-95, manufactured by Nacalai Tesque) at 2% by mass relative to the aqueous resin, and a viscosity was adjusted to 105 dPa·s. An aqueous dispersion of this resin composition was coated on the woven fabric by knife coating, at a resin amount after drying of 8 g / cm2. Properties of this woven fabric were assessed, and results are shown in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

An object of the present invention is to provide a 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 fabric for an airbag comprising a synthetic fiber woven fabric in which at least one side thereof is coated with a synthetic resin, characterized in that a range of 0.1 to 10 g / m2 of a synthetic resin is adhered to the synthetic fiber woven fabric having a cover factor represented by the equation 1 of less than 2000 and FR represented by the equation 2 of 55% or more, and air permeability of the fabric under a pressure difference of 100 kPa after adhesion is 0.01 to 1.00 L / cm2 / min.

Description

TECHNICAL FIELD[0001]The present invention relates to a fabric for an airbag which is of the low cost, and excellent in accommodability, and has air permeability satisfying a human body initial constraining performance.BACKGROUND ART[0002]An airbag, a wearing rate of which has been rapidly increased in recent years as one of automobile safety parts, is such that upon an automobile collision accident, a sensor senses impact, an inflator generates a gas at a high temperature and a high pressure, this gas rapidly develops an airbag, thereby, upon flying of a driver and a passenger in a collision direction, particularly a head is prevented or protected from colliding against a handle, a front glass or a door glass. Previously, in the airbag, a coated woven fabric covered with a synthetic rubber such as chloroprene, chlorosulfonated olefin and silicone has been used because of high heat resistance, high air insulating property (low air permeability), and high flame-retardancy and, curren...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B32B5/22
CPCB60R21/235B60R2021/23514D06N3/125D06M15/59D06N3/0002D03D1/02Y10T442/2139Y10T442/2811D03D1/04D06M13/418D06M15/285D06M15/507D10B2505/124
Inventor KANO, KENICHIROTSURUTA, TAKASHIISODA, HIDEOHAGIWARA, HIROAKIMARUYAMA, GAKUHATTORI, TAKAHIRO
Owner TOYOBO CO LTD
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