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Fabric for airbag, and airbag

A technology of fabrics and airbags, which is applied in the direction of fabrics, textiles, textiles and papermaking, etc., can solve the problems of poor impact absorption performance and slow deployment speed, etc., and achieve excellent crack resistance, thermal physical property change suppression, and high reliability Effect

Active Publication Date: 2013-07-31
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this type of airbag is a large-capacity airbag, but the deployment speed of the airbag stored for a long time is slowed down due to changes over time.
Even if the deployment timing of the airbag is optimized by using a detector and a deployment ignition controller, as long as there is a delay in the deployment of the airbag until the gas is filled from one end to the other end and functions, resulting in a wrong timing, the impact absorption performance will deteriorate.
Therefore, maintaining the deployment speed of large-capacity airbags under harsh environmental conditions has also become a problem

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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  • Fabric for airbag, and airbag
  • Fabric for airbag, and airbag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0135] The polymerization catalyst sodium hypophosphite is added to the aqueous solution containing the neutralized salt of hexamethylenediamine and adipic acid, and after polycondensation by a continuous polymerization device, the aqueous solution of heat stabilizer copper iodide / potassium iodide is added to form a resin sheet through post-stage polymerization. Then use solid phase polymerization to obtain a polyamide 6.6 resin with a relative viscosity ηr3.1. The iron element content of the polyamide 6.6 resin was 0.12 ppm. When the polyamide 6.6 resin is melt-spun with a melt extruder, a cyclic monomer and aluminum montanate are added. A metal non-woven fabric filter (average pore size: 15 μm) made of Hastelloy alloy C22 was used as the filter of the melt spinning machine. Furthermore, a spinning finish component was applied to the extruded filaments, followed by thermal drawing to obtain polyamide 6·6 fibers. The spinning finish is composed of 60 parts by weight of diole...

Embodiment 2

[0141] A polyamide 6.6 fiber having a boiling water shrinkage rate of 4.0% was used for the yarn for weaving, and it was carried out in the same manner as in Example 1, except that it was not refined and set after weaving. The results are shown in Table 2. There is no loss of development gas, the gas generator development pressure is sufficient, and the gas generator development pressure is equally sufficient during the heat cycle. No hot particles broke the bag.

Embodiment 3

[0143]The polyamide 6.6 fiber with a fineness of 350dtex, a number of filaments of 72, a single yarn fineness of 4.9dtex, and a boiling water shrinkage rate of 8.5% is used for weaving yarns. The heating roll of ℃ was carried out in the same manner as in Example 1, except that the cloth was overfeeded by 3% and quenched. The results are shown in Table 2. There is no loss of development gas, the gas generator development pressure is sufficient, and the gas generator development pressure is equally sufficient during the heat cycle. No hot particles break the bag.

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 an airbag module ensuring that when an airbag fabricated using a fabric composed of a polyamide yarn excellent in heat resistance is deployed by an inflator gas, the deployment occurs without loss of the gas and an excessive amount of generated gas is not necessary, as a result, the inflator is reduced in weight, and the airbag module of the present invention comprises an airbag fabric composed of a polyamide yarn, wherein the air permeability of the fabric under a pressure of 200 kPa is from 10 to 200 cc / cm 2 / sec and in the thermal stress of the constituent yarn as measured under the conditions of an initial load of 0.02 cN / dtex, a yarn length of 25 cm and a temperature rise rate of 80°C / min, the summed thermal stress of the total of the warp yarn and the weft yarn at 230°C is from 0.33 to 1.20 cN / dtex.

Description

technical field [0001] The present invention relates to an airbag that absorbs impact on a human body and protects it during an accident caused by a vehicle, and more specifically, relates to a fabric for an airbag that is lightweight and has excellent storage properties, an airbag, and an airbag module. Background technique [0002] In order to alleviate the impact on the human body in an automobile accident, the installation of airbags in vehicles is being promoted. As airbags that inflate with gas or the like during a collision and absorb the impact on the human body, in addition to airbags for the driver's seat and passenger's seat, curtain airbags, side airbags, knee airbags, and rear airbags have been put into practical use. to protect passengers. Furthermore, in order to protect pedestrians, installation of various airbags, such as airbags installed so as to inflate toward the outside of the vehicle, is being studied. On the other hand, due to increasing interest in...

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 Patents(China)
IPC IPC(8): D03D1/02B60R21/235
CPCB60R2021/23509D03D1/02D03D13/008B60R21/235Y10T428/1345Y10T428/1314Y10T442/3179Y10T442/322Y10T442/2893Y10T442/3976Y10T442/3065Y10T442/3382Y10T442/2139D01F1/10D03D15/283D03D15/573D06M11/00D10B2331/02D10B2505/124
Inventor 伊势史章
Owner ASAHI KASEI KK
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