Non-coated airbag base fabric, coated airbag base fabric, and airbag using same

Patent metadata

Field	Value
Publication number	US-11746446-B2
Application number	US-201916976297-A
Country	US
Kind code	B2
Filing date	Feb 22, 2019
Priority date	Feb 28, 2018
Publication date	Sep 5, 2023
Grant date	Sep 5, 2023

Abstract

A technical problem to be solved by the present invention is to provide a non-coated fabric for airbags and a coated fabric for airbags that are both less likely to have yarn slippage after being sewn, and that can be compactly stored; and airbags using these fabrics. The fabric for airbags according to the present invention is a non-coated fabric for airbags or a coated fabric for airbags that both have a crimp ratio of 12% or more in the warp direction, and a crimp ratio of 61 or less in the weft direction.

First claim

The invention claimed is:

1. A non-coated fabric for airbags having a crimp ratio of 12% or more in the warp direction and a crimp ratio of 6% or less in the weft direction;
wherein the non-coated fabric is a base fabric of a side-curtain airbag, and the non-coated fabric has an edgecomb resistance of 1500 N or more in the warp yarn direction based on two layers of the non-coated fabric.

2. The non-coated fabric for airbags according to claim 1 , having a stiffness of 100 mm or less in the warp yarn direction as determined based on two layers of the non-coated fabric by a cantilever method.

3. The non-coated fabric for airbags according to claim 1 , having an edgecomb resistance of 1550 N or more in the warp yarn direction based on two layers of the non-coated fabric.

4. The non-coated fabric for airbags according to claim 1 , comprising a synthetic-fiber multifilament that has a total fineness of 400 dtex or more and 600 dtex or less,
the non-coated fabric for airbags having
a weaving density of 56 yarn threads/2.54 cm or more in both the warp direction and the weft direction, and
a cover factor of 2150 or more and 2600 or less.

5. An airbag comprising the non-coated fabric for airbags according to claim 1 .

6. A coated fabric for airbags having a crimp ratio of 12% or more in the warp direction and a crimp ratio of 6% or less in the weft direction;
wherein the coated fabric is a base fabric of a side-curtain airbag, and the coated fabric has an edgecomb resistance of 1600 N or more in the warp yarn direction based on two layers of the non-coated fabric.

7. The coated fabric for airbags according to claim 6 , having a stiffness of 90 mm or less in the warp yarn direction as determined based on two layers of the coated fabric by a cantilever method.

8. The coated fabric for airbags according to claim 6 , having an edgecomb resistance of 1650 N or more in the warp yarn direction based on two layers of the coated fabric.

9. The coated fabric for airbags according to claim 6 , comprising a synthetic-fiber multifilament that has a total fineness of 400 dtex or more and 600 dtex or less,
the coated fabric having
a weaving density of 56 yarn threads/2.54 cm or more in both the warp direction and the weft direction, and
a cover factor of 2150 or more and 2600 or less.

10. The coated fabric for airbags according to claim 6 , wherein the amount of a silicone resin applied is 5 g/m 2 or more and 25 g/m 2 or less.

11. An airbag comprising the coated fabric for airbags according to claim 6 .

12. A non-coated fabric for airbags having a crimp ratio of 12% or more in the warp direction and a crimp ratio of 6% or less in the weft direction;
wherein the non-coated fabric is a base fabric of a side-curtain airbag, and the non-coated fabric has a weaving density of 56 yarn threads/2.54 cm or more in both the weft direction and the warp direction.

Assignees

• Toyo Boseki

Inventors

• Sakai Masahiro
• Matsui Yosihiro
• Kano Kenichiro

Classifications

• D03D1/02 Primary

  Inflatable articles · CPC title

• D03D15/283

  synthetic polymer-based, e.g. polyamide or polyester fibres (cellulose-based artificial fibres D03D15/225) · CPC title

• D03D13/008

  characterised by weave density or surface weight · CPC title

• D03D13/00

  Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft · CPC title

• D06N3/0006

  using woven fabrics · CPC title