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High-density textile for air bag

A high-density, fabric-based technology for fabrics, textiles, textiles, and paper making that can address issues such as increased manufacturing costs, reduced softness, and difficulty in recycling

Inactive Publication Date: 2008-07-09
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, base fabrics coated with these rubbers have many disadvantages in using base fabrics for airbags due to the increase in the weight of the base fabric, the decrease in softness, the increase in manufacturing costs, and the difficulty in recycling.
Even if the disadvantages are considerably improved by partially using a silicon-coated base cloth, it still cannot meet the requirements.

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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  • High-density textile for air bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3 and comparative example 1-2

[0041] Utilize the water-jet loom to weave the raw yarn 350dtex / 108f (single yarn denier: 3.3dtex) of the physical properties shown in Table 1 through plain weaving through the warp yarn and weft yarn, then carry out shrinkage processing with boiling water, and carry out drying processing at 130°C to obtain the warp yarn An uncoated fabric with a density of 60 counts / inch and a weft density of 60 counts / inch, the evaluation results of the airbag fabric are shown in Table 1 below

[0042] Table 1

[0043]

Embodiment 4-5 and comparative example 3-5

[0045] Weave raw yarn 350dtex / 72f (single yarn fineness (4.9dtex)) with the physical properties shown in Table 1 by plain weaving warp and weft on a water jet loom, shrink in boiling water, and dry and shape at 150°C , to obtain an uncoated fabric with a warp density of 62 counts / inch and a weft density of 62 counts / inch. The evaluation results of the airbag fabric are shown in Table 2 below.

[0046] Table 2

[0047]

[0048] As the airbag fabric, the present invention obtains the required light weight and stable fabric strength physical properties and low air permeability under high pressure and reduces the impact on the occupant under high pressure when the airbag is stretched, and can provide a high-density fabric suitable for the airbag.

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

There is provided a high density woven fabric wherein air permeability under 50 kPa differential pressure is 2.5 L / cm2 / min. or less, and air permeability index (50 kPa) calculated by the formula 1 is 1.2 or more.Air permeability index (50 kPa)=(Log (Q (55 kPa))-Log (Q (45 kPa))) / (Log 55-Log 45) (Formula 1)Air permeability under Q(55 kPa): 55 kPa differential pressure is (1 / cm2 / min.); and Air permeability under Q(45 kPa): 45 kPa differential pressure is (1 / cm2 / min.).

Description

technical field [0001] The present invention relates to a fabric for an airbag, which is a safety device for an automobile, and more specifically, relates to a fabric that maintains required mechanical properties and has a low air permeability under high pressure and reduces the impact on the occupant under high pressure when the airbag is stretched. Airbags are made of high-density fabrics. Background technique [0002] In recent years, airbags, which are one of the safety components of air vehicles, have rapidly increased their installation rate along with the improvement of occupants' safety awareness. When the airbag collides with an air vehicle, the sensor detects the impact, and the inflator generates high-temperature and high-pressure gas, which rapidly expands the airbag to protect the flight attendant. [0003] Heretofore, airbags are using base fabrics coated with synthetic rubber such as neoprene, chlorosulf(acyl)olefin, and silicone rubber for the purpose of hea...

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): B60R21/16B60R21/233D03D1/02
Inventor 北村守
Owner TOYOBO CO LTD
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