Fabric for safety air bag and production method of fabric

A technology of airbags and fabrics, applied in fabrics, vehicle safety arrangements, pedestrian/passenger safety arrangements, etc., can solve the problems of impossible production of high-density fabrics, inability to change the structure of the weave opening, unsuitable airbag cloth production, etc.

Active Publication Date: 2015-01-14
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented describes an improved method for making fabrics without excessively bulky edges caused by overlapping woven threads. By adjusting these factors like thread count ratio, fiber density, and thickness, there can result in fewer layers on top while still maintaining sufficient tensile stress. Additionally, this design allows for flexibility in sewing multiple components together into one piece instead of having them individually. Overall, this improves manufacturing efficiencies and reduces waste compared to traditional methods.

Problems solved by technology

Technological Problem: Air bags use highly dense materials like nylon or polyethylenetriamide (PETA) fibers with poor sealability, making them difficult to achieve their intended purpose without losing strength overtime. Current methods involve adding processing yams into these fabrics instead of ensuring they meet tightly fitting standards such as those set forth in Japan Publication No. 2004/02498. Additionally, current techniques involving changing shed structures caused by changes made after manufacturings may result in defects called cracks.

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 safety air bag and production method of fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Using nylon 66 filament with a fineness of 350dtex, weaving on a water jet loom equipped with full temples and barbed ring temples. Install barbed ring temples at a distance of 5 cm from the two fabric edges and 0 cm from the back of the full temple When weaving, add 4 polyester processed yarns with a fineness of 300 dtex on both sides of the fabric, and finally produce an airbag fabric with a warp and weft density of 60 yarns / inch. The physical properties are shown in Table 1.

Embodiment 2

[0036] Using nylon 66 filament with a fineness of 350 dtex, weaving on a water jet loom equipped with full temples and barbed ring temples, install barbed ring temples at a distance of 10 cm from both sides of the fabric and 30 cm from the rear of the full temple When weaving, add 8 nylon processed yarns with a fineness of 150 dtex on both sides of the fabric. Finally, an airbag fabric with a warp and weft density of 60 threads / inch is obtained. The physical properties are shown in Table 1.

Embodiment 3

[0038] Using nylon 66 filament with a fineness of 470dtex, weaving on a water jet loom equipped with full temples and barbed ring temples. Install barbed ring temples at a distance of 2 cm from the two fabric edges and 5 cm from the rear of the full temple When weaving, add 3 nylon processed yarns with a fineness of 400 dtex on both sides of the fabric, and finally produce an airbag fabric with a warp and weft density of 55 threads / inch. The physical properties are shown 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 invention discloses a fabric for a safety air bag and a production method of the fabric. The difference ratio A between the warp crimp ratio of the center of the fabric in the width direction and the warp crimp ratio of the portions, 2 cm away from selvedges, of the two sides of the fabric is smaller than or equal to 19%. The fabric for the safety air bag has the advantages that the crest height of a corrugated edge formed by the two selvedges is small, the difference ratio between the warp crimp ratio of the center of the fabric in the width direction and the warp crimp ratio of the selvedges is small, meanwhile, the loss ratio in the follow-up clipping project is small, and cost is saved.

Description

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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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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Owner TORAY IND INC
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