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Fabric for airbag and fabric roll

A fabric roll and fabric technology, applied in fabrics, textiles and papermaking, fabric surface trimming, etc., can solve the problems of friction reduction yarn, difficulty in exerting opening suppression, and no introduction of high temperature openings, etc., to achieve the effect of uniform air flow

Active Publication Date: 2015-01-07
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the literature does not describe the opening at high temperature
Generally, fibers used for airbags suffer from friction reduction and elongation of the yarn itself at high temperatures, and as a result, it may be difficult to exhibit sufficient opening suppression when exposed to high-temperature deployment gas.

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 fabric roll
  • Fabric for airbag and fabric roll

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Polyamide 6·6 resin was melt-spun at 300°C, and while cooling, 0.8% of spinning oil containing 20% ​​bisphenol A dilaurate was applied to the yarn weight, and then drawn with heat at 200°C. The drawing roll stretched to 4.9 times, and after interlacing was applied with compressed air, a raw yarn with a fineness of 470 dtex and a number of filaments of 72 was obtained. The tenacity of the raw yarn was 8.56 cN / dtex, the elongation at break was 20.0%, and Tmax was 120°C. Using this raw yarn, LWT710 manufactured by TOYOTA INDUSTRIES CORPORATION. was used without gluing, with a weaving width of 2.3m, a warp density of 49.5, a weft density of 50, a fabric width of 230cm, and a warp tension of 0.3g / dtex. Plain weaving was carried out at a rotational speed of 600 rpm. The weft insertion device was of a type inserted only by free flight, and the storage capacity was set to 900% of the weaving width. The two selvage parts use 2 33dtex nylon 66 monofilaments as wrapping yarns, a...

Embodiment 2

[0066] In Example 1, the scouring process was omitted, and only tenter processing was performed. The processing conditions are the same as in Example 1. The residual oil content of the obtained fabric was 0.75% by weight based on the weight of the fabric, and 1500 ppm of bisphenol A dilaurate remained. The same evaluation as in Example 1 was performed on this woven fabric, and the results are shown in Table 1.

Embodiment 3

[0068]When melt-spinning polyamide 6.6 resin, apply 1.2% spinning oil containing 20% ​​bisphenol A dilaurate relative to the yarn weight while cooling, and then draw it with a hot drawing roll at 200°C. Stretch to 4.5 times, and interweave with compressed air to obtain a raw yarn with a fineness of 470 dtex and a number of filaments of 72. The tenacity of the raw yarn was 8.03 cN / dtex, the elongation at break was 30%, and Tmax was 120°C. Weaving and post-processing were carried out in the same manner as in Example 1 using this raw yarn. As a result, the residual oil content of the obtained fabric was 0.25% by weight based on the fabric weight, and 500 ppm of bisphenol A dilaurate remained. The same evaluation as in Example 1 was performed on this woven fabric. The results are described in Table 1.

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

The purpose of the present invention is to provide a fabric in which, when the fabric is made into a bag body, mesh opening at high-temperatures at the boundary portion between the expansion section and the non-expansion section is minimized. This fabric comprises a thermoplastic fiber, a substance having a molecular structure including an aromatic group being present on the fiber surface at an amount of 10 to 2000 ppm with respect to the weight of the fiber.

Description

technical field [0001] The present invention relates to fabrics for airbags. More specifically, it relates to an airbag fabric having high airtightness in a high-temperature environment. Background technique [0002] Airbags are used to reduce the impact of collisions in accidents and the contact between car interiors and the human body. Therefore, airtightness is required for the airbag. Specifically, the airtightness of the boundary portion between the inflatable portion and the non-inflatable portion affects the airtightness of the bag as a whole, and the airtightness of the aforementioned portion is particularly important in an environment where high-temperature gas exists during operation of the inflator. To improve the airtightness of this part, it is effective to increase the frictional force between yarns, and this technique is disclosed in Patent Document 1 below. However, openings at high temperatures are not described in this document. Fibers generally used fo...

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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IPC IPC(8): D03D15/00B60R21/235D03D1/02D06C7/02D06M13/152D06M13/188D06M13/224D06M15/00D06M15/70D06M101/32D06M101/34
CPCD10B2401/041D06C7/02D06M13/224D06M15/70B60R2021/23509B60R21/235D06M13/152D03D1/02D03D15/00D06M15/00D06M13/188D06M2101/32D06M2101/34
Inventor 田中刚伊势史章
Owner ASAHI KASEI KK
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