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Fabric for airbag, manufacturing method thereof and airbag

A technology for an airbag and a manufacturing method, which is applied to vehicle safety arrangements, fabrics, textiles, and papermaking, etc., 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: 2020-05-15
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 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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  • Fabric for airbag, manufacturing method thereof and airbag
  • Fabric for airbag, manufacturing method thereof and airbag
  • Fabric for airbag, manufacturing method thereof and airbag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] (Example 1): 475 dtex / 140 multifilament yarns (boiling water shrinkage rate 5.7%) formed by nylon 66 are used as warp and weft yarns in a non-twist state, and a flat fabric is woven by a water jet loom (WJL), Refining and drying were carried out to produce a fabric with warp yarns 53.4 yarns / inch, weft yarns 52.8 yarns / inch, and cover factor (CF) 2196. In addition, high-pressure air was sprayed on 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. As is clear from Table 1, this fabric is excellent in dynamic low air permeability and internal pressure retention, and is a very excellent airbag fabric.

Embodiment 2

[0081] (Example 2): 353 dtex / 192 multifilament yarns (boiling water shrinkage rate: 6.2%) formed of nylon 66 are used as warp and weft yarns in a non-twisted state, and plain fabrics are woven by WJL, refined and dried, and manufactured A fabric with 63.0 warp yarns / inch, 60.5 weft yarns / inch, and a cover factor (CF) of 2201 is produced. In addition, moisture was sucked and removed from the fabric before drying using a vacuum device, and the moisture content was adjusted to 15%. Table 1 shows the physical properties of the obtained fabric. As is clear from Table 1, this fabric is excellent in dynamic low air permeability and internal pressure retention, and is a very excellent airbag fabric.

Embodiment 3

[0082] (Example 3): 470dtex / 144 multifilament yarns (boiling water shrinkage rate: 5.2%) formed of nylon 66 are used as warp and weft yarns in a non-twisted state, and plain fabrics are woven by WJL, refined and dried, and manufactured A fabric with 49.0 warp yarns / inch, 49.0 weft yarns / inch, and a cover factor (CF) of 2016 is produced. In addition, moisture was sucked and removed from the fabric before drying using a vacuum device, and the moisture content was adjusted to 8%. Table 1 shows the physical properties of the obtained fabric. As is clear from Table 1, this fabric is excellent in dynamic low air permeability and internal pressure retention, and is a very excellent airbag fabric.

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Abstract

The present invention relates to a fabric for an uncoated airbag which is excellent in dynamic low air permeability characteristics and also excellent in internal pressure retention characteristics. The high-density fabric for the airbag is characterized by being formed from synthetic fiber multifilament yarns, having a tensile strength in a twill direction of 400-700N, an average dynamic air permeability (ADAP) of 500 mm / s or less as measured by ASTM D6476, and a dynamic air permeability curve index (Exponent) of 1.5 or less as measured by the specification.

Description

[0001] This application is a divisional application of the application submitted by the applicant with the application number 201510368890.6 and the title of the invention is "fabric for airbag, its manufacturing method and airbag". The filing date of the parent case is June 29, 2015. technical field [0002] The present invention relates to an airbag, a fabric for an airbag, and a manufacturing method thereof. Background technique [0003] In recent years, with increasing awareness of traffic safety, various airbags have been developed to ensure the safety of passengers in the event of an automobile accident, and the effectiveness of the airbags has been recognized and put into practical use rapidly. [0004] The airbag is a material that protects the occupants by inflating and deploying inside the vehicle in a very short time after the impact of the vehicle, stopping the occupants who move under the reaction of the impact, and absorbing the impact. In terms of this functi...

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(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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