Fabric for airbag

Patent metadata

Field	Value
Publication number	US-10132030-B2
Application number	US-201414777828-A
Country	US
Kind code	B2
Filing date	Mar 18, 2014
Priority date	Mar 19, 2013
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

[Problem] The purpose of the present invention is to provide a base fabric for an airbag which has a low initial air permeability, an excellent flammability, and in addition a small amount of thread fraying when the fabric is cut with a knife or sewn, even with a small amount of coating,
[Solution] Provided is a base fabric for an airbag comprising a coated fabric wherein resin compositions are applied to at least one side of a textile, wherein the coating amount of the resin composition applied to the one side of the textile is 0.1 to 10 g/m 2 in terms of a mass after drying, an air permeability under a differential pressure of 100 kPa is 0.05 L/cm 2 /min or less, a flammability measured in accordance with FMVSS302 is self-extinguishing, and the number of frayed thread at the end part after 100 repetitions of a scrub test in accordance with ISO5981 is 5 or less.

First claim

The invention claimed is:

1. A base fabric for an airbag comprising a coated fabric wherein a polyamide-based thermoplastic resin composition is applied to at least one side of a textile, the textile comprising a synthetic fiber textile constituted of threads of 200 to 500 dtex and having a cover factor of 1800 to 2500,
wherein a coating amount of the resin composition applied to the one side of the textile is 0.1 to 10 g/m 2 in terms of a mass after drying, an air permeability under a differential pressure of 100 kPa is 0.05 L/cm 2 /min or less, a flammability measured in accordance with FMVSS302 is self-extinguishing, and the number of frayed thread at the end part after 100 repetitions of a scrub test in accordance with ISO5981 is 5 or less;
the polyamide-based thermoplastic resin composition further comprises an adhesion aid (E) and an adhesion aid reaction catalyst (F); and
a mixing amount as a solid content of the adhesion aid (E) relative to 100 parts by mass of the polyamide-based thermoplastic resin composition is 5 to 10 parts by mass.

2. The base fabric for an airbag according to claim 1 , wherein the polyamide-based thermoplastic resin composition has a resin film strength of not less than 10 MPa and not more than 17 MPa, and a break elongation of not less than 900% and not more than 1300% in a film product made of the polyamide-based thermoplastic resin composition.

3. The base fabric for an airbag according to 2 , wherein the polyamide-based thermoplastic resin composition comprises a polyamide elastomer resin (A), an antioxidant (B), a reactive compound (C) and a crosslinking agent (D).

4. The base fabric for an airbag according to claim 1 , wherein the polyamide-based thermoplastic resin composition comprises a polyamide elastomer resin (A), an antioxidant (B), a reactive compound (C) and a crosslinking agent (D).

5. The base fabric for an airbag according to claim 4 , wherein the polyamide-based thermoplastic resin composition further comprises a pigment (G).

6. The base fabric for an airbag according to claim 5 , wherein a solid concentration of the polyamide elastomer resin (A) and the antioxidant (B) in the polyamide-based thermoplastic resin composition is 15 to 35 mass %, and a mixing amount as a solid content of each of the reactive compound (C) and the crosslinking agent (D) relative to 100 parts by mass of the polyamide-based thermoplastic resin composition is as follows:
the reactive compound (C): 1 to 5 parts by mass, and
the crosslinking agent (D): 2 to 4 parts by mass.

7. The base fabric for an airbag according to claim 4 , wherein a solid concentration of the polyamide elastomer resin (A) and the antioxidant (B) in the polyamide-based thermoplastic resin composition is 15 to 35 mass %, and a mixing amount as a solid content of each of the reactive compound (C) and the crosslinking agent (D) relative to 100 parts by mass of the polyamide-based thermoplastic resin composition is as follows:
the reactive compound (C): 1 to 5 parts by mass, and
the crosslinking agent (D): 2 to 4 parts by mass.

Assignees

• Toyo Boseki

Inventors

• Akechi Tsutomu

Classifications

• B60R2021/23519

  Resin · CPC title

• D06N2213/02

  All layers being of the same kind of material, e.g. all layers being of polyolefins, all layers being of polyesters · CPC title

• D06M2101/34

  Polyamides · CPC title

• D06M2200/30

  Flame or heat resistance, fire retardancy properties · CPC title

• D06N2209/12

  Permeability or impermeability properties · CPC title