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Safe air bag fabric, manufacturing method thereof, and safe air bag

A technology for airbags and manufacturing methods, applied in vehicle safety arrangements, fabrics, textiles, and papermaking, can solve problems such as insufficient dynamic ventilation characteristics, and achieve the effects of excellent internal pressure retention characteristics and excellent dynamic low ventilation characteristics

Active Publication Date: 2017-01-11
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the above-mentioned means are not sufficient for the dynamic ventilation characteristics

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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  • Safe air bag fabric, manufacturing method thereof, and safe air bag
  • Safe air bag fabric, manufacturing method thereof, and safe air bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] (Example 1): A 475dtex / 140 multifilament yarn (boiling water shrinkage rate of 5.7%) made of nylon 66 was used as warp and weft in an untwisted state, and a plain fabric was woven using a water jet loom (WJL). After refining and drying, a fabric with 53.4 warp yarns / inch, 52.8 weft yarns / inch, and cover factor (CF) 2196 was produced. In addition, high-pressure air was blown to the fabric before drying to remove water, and the moisture content was adjusted to 7%. Table 1 shows the physical properties of the obtained fabric. It is clear from Table 1 that the fabric has excellent dynamic low air permeability and internal pressure retention, and is a very excellent fabric for airbags.

Embodiment 2

[0080] (Example 2): A 353dtex / 192 multifilament yarn (boiling water shrinkage rate of 6.2%) made of nylon 66 was used as warp and weft in an untwisted state, and a plain fabric was woven with WJL, refined and dried to manufacture A fabric with 63.0 threads / inch for warp yarns, 60.5 threads / inch for weft yarns and 2201 cover factor (CF). In addition, a vacuum device was used to suck and remove moisture from the fabric before drying, and the moisture content was adjusted to 15%. Table 1 shows the physical properties of the obtained fabric. It is clear from Table 1 that the fabric has excellent dynamic low air permeability and internal pressure retention, and is a very excellent fabric for airbags.

Embodiment 3

[0081] (Example 3): A multifilament yarn of 470 dtex / 144 (boiling water shrinkage rate 5.2%) made of nylon 66 was used as warp and weft in an untwisted state, and a plain fabric was woven with WJL, refined and dried to manufacture A fabric with 49.0 threads / inch for warp yarns and 49.0 threads / inch for weft yarns and 2016 coverage factor (CF). In addition, a vacuum device was used to suck and remove moisture from the fabric before drying, and the moisture content was adjusted to 8%. Table 1 shows the physical properties of the obtained fabric. It is clear from Table 1 that the fabric has excellent dynamic low air permeability and internal pressure retention, and is a very excellent fabric for airbags.

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Abstract

The invention relates to a non-coating safe air bag fabric having excellent dynamic low air permeability character and excellent internal pressure retaining character. The safe air bag high-density fabric is characterized in that the safe air bag high-density fabric is formed by synthetic fiber multifilament yarns; the tensile strength force in the bias direction is 400-700 N; the average dynamic air permeability (ADAP) measured based on an ASTM D6476 is less than 500 mm / s; and the dynamic air permeability curve index (Exponent) measured based on the stipulation is less than 1.5.

Description

Technical field [0001] The invention relates to an airbag, a fabric for an airbag, and a manufacturing method thereof. Background technique [0002] In recent years, as the awareness of traffic safety has increased, various airbags have been developed in order to ensure the safety of passengers in the event of a car accident. Following this, the effectiveness of the airbags has been recognized and they have been put into practical use quickly. [0003] An airbag is a substance that protects the passengers by inflating and deploying in the vehicle within a very short time after a vehicle collision to prevent the passengers moving under the reaction of the collision and absorb the impact. In terms of this function, it is necessary to make the air flow rate of the fabric constituting the airbag small. In addition, in recent years, for the purpose of further improving passenger restraint, the internal pressure of the airbag is maintained at a certain level when the airbag is inflated ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03D1/02D03D15/00D03D13/00B60R21/235D03D15/283D03D15/40D03D15/573
Inventor 山本美保
Owner TOYOBO CO LTD
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