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Coated base fabric for airbag and airbag including same

An airbag and base fabric technology, applied in transportation and packaging, textiles and papermaking, pedestrian/occupant safety arrangement, etc., can solve the problems of low air permeability, poor storage, and deterioration of storage.

Active Publication Date: 2021-08-31
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although airbags prepared using such surface-coated textiles (i.e., "coated airbags") have advantages in low air permeability and high heat resistance, such coated airbags also have the following disadvantages: due to coating Disposal results in significantly increased cost, and also has poor packability due to the heavy weight and thickness of the base fabric itself
However, such technology may lead to deterioration of packability when the base fabric has a high weaving density

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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  • Coated base fabric for airbag and airbag including same
  • Coated base fabric for airbag and airbag including same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0157] Nylon 66 raw yarn (having a circular monofilament cross-section) with a denier of 470 dtex / 144f, a tensile strength of 8.3 cN / dtex, an elongation at maximum force of 21.0%, and a boiling water shrinkage of 9.3% was used as the weft yarn and warp, using a water jet loom, by setting the weaving density of both the weft and warp to 53.0 threads / 2.54 cm, and setting the weaving conditions to those shown in Table 1, to weave a plain weave base fabric. Then, without drying, the base fabric was passed through a hot water shrink tank at 98°C, followed by a dry finishing process using a two-stage suction drum dryer in which The temperature T1 of the first step was controlled to be 120°C, and the temperature T2 of the second step was controlled to be 125°C.

[0158] Next, apply the solvent-free silicone resin composition at 15 g / m by the floating doctor blade method 2 The coating amount is applied to one surface of the base fabric. In addition, curing treatment was performed at...

Embodiment 2

[0160] Nylon 66 raw yarn (having a circular monofilament cross-section) with a denier of 470 dtex / 144f, a tensile strength of 8.3 cN / dtex, an elongation at maximum force of 21.0%, and a boiling water shrinkage of 9.3% was used as the weft yarn and warp, using a water jet loom, by setting the weaving density of both the weft and warp to 52.5 / 2.54 cm, and setting the warp tension to 180 cN / , to weave a plain weave base fabric. Then, without drying, the base fabric was passed through a hot water shrink tank at 98°C, followed by a dry finishing process using a two-stage suction drum dryer in which The temperature T1 of the first step was controlled to be 120°C, and the temperature T2 of the second step was controlled to be 125°C.

[0161] Next, apply the solvent-free silicone resin composition at 15 g / m by the floating doctor blade method 2 The coating amount is applied to one surface of the base fabric. In addition, curing treatment was performed at 190° C. for 2 minutes, where...

Embodiment 3

[0163] Nylon 66 raw yarn (having a circular monofilament cross-section) with a denier of 470 dtex / 144f, a tensile strength of 8.3 cN / dtex, an elongation at maximum force of 21.0%, and a boiling water shrinkage of 9.3% was used as the weft yarn and warp, using a water jet loom, by setting the weaving density of both the weft and warp to 53.0 threads / 2.54 cm, and setting the weaving conditions to those shown in Table 1, to weave a plain weave base fabric. Then, without drying, the base fabric was passed through a hot water shrink tank at 98°C, followed by a dry finishing process using a two-stage suction drum dryer in which The temperature T1 of the first step was controlled to be 120°C, and the temperature T2 of the second step was controlled to be 125°C.

[0164] Next, in the same manner as in Example 1, the solvent-free silicone resin composition was mixed at 25 g / m by the floating doctor method 2 The coating amount is applied to one surface of the base fabric. In addition,...

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Abstract

The present invention addresses the problem of providing: a coated base fabric for an airbag which is less likely to cause a slippage after sewing and is capable of compact storage; and an airbag using same. To solve the problem, this coated base fabric for an airbag is provided which has a warp-direction crimp rate of at least 12% and a weft-direction crimp rate of at most 6%.

Description

technical field [0001] The present disclosure relates to a coated base fabric for an airbag and an airbag including the base fabric. Background technique [0002] In recent years, air bags have been widely used as safety equipment for occupant protection in vehicle collisions. As airbag base fabrics, those obtained by coating the surface of textile fabrics with silicone rubber or the like to ensure low air permeability sufficient to prevent inflator gas leakage have been used. However, although airbags prepared using such surface-coated textiles (i.e., "coated airbags") have advantages in low air permeability and high heat resistance, such coated airbags also have the following disadvantages: due to coating Handling entails significantly increased costs, and also has poor packability due to the heavy weight and thickness of the base fabric itself. Therefore, it becomes difficult for coated airbags to meet the market demand for weight and size reduction. Therefore, researc...

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): D03D1/02B60R21/235
CPCD03D1/02B60R21/235B60R2021/23514Y10T442/2861Y10T442/3065D06N3/128D06N2209/121D06N2211/268D10B2331/02D10B2505/124
Inventor 酒井将宏松井美弘加纳宪一郎
Owner TOYOBO CO LTD
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