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high density fabric

A high-density, fabric technology, applied in the direction of fabrics, textiles, textiles and papermaking, can solve the problems of poor weaving, different densities, air permeability, less defects, etc. Effect

Active Publication Date: 2016-07-06
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, low-defect, stable production can lead to low-cost and high-quality fabrics for airbags
[0006] In particular, in the case of weaving high-density plain fabrics such as fabrics for airbags, there are problems that the warp yarns at the selvage portions at both ends of the fabric are slack, and the density and air permeability of the selvedge portions and the central portion of the woven fabric are The degree of difference is different; the weavability of the loom is deteriorated due to the slack of the selvedge, so it is required to improve the quality and production
In addition, with the increase in speed and width of looms, the slack in the selvage at both ends has a greater impact on weavability. When improving production efficiency, if the slack in the selvedge is not improved, the loom often suffers from slack. Stopping, uneven fabric quality and other adverse conditions
[0007] Up to now, weaving methods for stably producing high-quality fabrics for airbags have been proposed, and the warp yarns have been carefully studied, and for example, a method of making the quality of the fabric in the width direction uniform by varying the warp fineness and the type of yarns at the selvage portion of the fabric has been proposed. method, but it cannot be said to be sufficient for solving the slack of the warp yarn at the selvage portion (see Patent Documents 1 and 2 below)
In addition, a method of changing the weaving structure of the selvedge portion of the fabric has also been proposed, but changing the structure is not easy and the effect is small (see Patent Document 3 below).
Furthermore, a method of solving the slack in the selvage portion of the fabric by a processing method has also been proposed (see Patent Document 4 below), but the conventional technology is not a fundamental solution to the generation of wrinkles in the selvage portion.

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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Examples

Experimental program
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Effect test

Embodiment 1

[0089] Fibers having a strength of 8 cN / dtex obtained by melt-spinning and thermally drawing polyhexamethylene adipamide resin were used as warp and weft of the fabric. The fiber had a fineness of 470 dtex, 136 single yarns, a boiling water shrinkage rate of 7.0%, and an interlacing number of 10 / m by the water immersion method. The warp yarns are warped without twisting or sticking, and a warp beam with 4382 warp yarns is produced. The number of reinforcing threads at the selvedge part is 4 on one side and 8 on both sides, and the fineness of the reinforcing threads is 22dtex. In addition, a full-width temple made of nylon resin is used, and a convex spindle with a diameter of 0.5 mm is uniformly and densely attached to the surface.

[0090] A water-jet loom was used as the loom, and the warp tension was set to 0.32cN / dtex. The loom rotation speed was 700rpm, and the weft was woven using the same yarn as the warp. Next, the gray cloth obtained is washed with water, passed co...

Embodiment 2

[0093] Gray fabrics were obtained in the same manner as in Example 1, except that the warp tension on the loom was 0.21 cN / dtex and the fineness of the reinforcing threads was 33 dtex. After the woven fabric was washed with water and passed through a drying cylinder, it was treated in the same manner as in Example 1 except that it was heat-set without passing through the heat calendering process, to obtain a woven fabric.

[0094] The evaluation results of the obtained fabrics are shown in Table 1. The spread rate was good at 0.6, the warp density difference of the fabric was as small as 0.9 yarns / 2.54cm, the air permeability and air permeability difference between 50kPa and 500Pa were also good, and the weavability was also good. It should be noted that the airbag produced from the obtained high-density fabric also showed good results in internal pressure maintaining performance and airbag folding performance.

Embodiment 3

[0096] The warp tension on the loom is set to 0.38cN / dtex, and the fineness of the reinforcing thread is 4 threads of 67dtex and 4 threads of 22dtex from the center toward the end at the selvage portion on one side, and 4 threads of 22dtex at the selvage portion on the other side. Gray fabrics were obtained in the same manner as in Example 1 except that 8 pieces of 22dtex were used. The woven gray cloth is washed with water and passed through a drying cylinder to obtain a fabric.

[0097] The evaluation results of the obtained fabrics are shown in Table 1. The spread rate was good at 0.7, the warp density difference of the fabric was as small as 1.0 yarns / 2.54cm, the air permeability and air permeability difference between the fabric at 50kPa and 500Pa were also good, and the weavability was also good. It should be noted that the airbag produced from the obtained high-density fabric also showed good results in internal pressure maintaining performance and airbag folding perfo...

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 high-density fabric with uniform quality in the width direction and a manufacturing method thereof. The high-density fabric of the present invention is characterized in that the warp and weft yarns are composed of synthetic fiber multifilament yarns with a denier of 210 to 750 dtex, and the cloth In the plain weave fabric having a cover factor in the range of 2000 to 2500, the warp direction expansion rate of the fabric end is 0 to 1.5.

Description

technical field [0001] The present invention relates to a high-density fabric, and more specifically, to a high-quality high-density fabric suitable for use in airbags and a weaving method for stably producing the same. Background technique [0002] In order to alleviate the impact on the human body in a vehicle accident, it is being promoted to install air bags in vehicles such as automobiles. As airbags that inflate due to gas or the like at the time of impact to absorb and ease the impact on the human body, in addition to airbags for the driver's seat and passenger's seat, side curtain airbags, side airbags, or knee airbags, car seat Seat airbags, curtain airbags for rear view windows, seat belt airbags for rear seats, etc. are gradually put into practical use. Furthermore, in order to protect pedestrians, various airbags, such as airbags that are installed to inflate toward the outside of the vehicle, are being studied. [0003] Since the fabric for the airbag is a saf...

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): D03D15/00D03D13/00D03D15/283D03D15/40
Inventor 奥野登起男
Owner ASAHI KASEI KK
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