Airbag base fabric and manufacturing method therefor
US-10543803-B2 · Jan 28, 2020 · US
Non-coated base fabric for airbag, airbag, and manufacturing method of non-coated base fabric for airbag
US11761126B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11761126-B2 |
| Application number | US-201917276571-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 27, 2019 |
| Priority date | Sep 19, 2018 |
| Publication date | Sep 19, 2023 |
| Grant date | Sep 19, 2023 |
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- Title
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Abstract
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A non-coated base fabric for an airbag is made of a polyamide fiber, wherein a CV value of the dynamic air permeability by the ASTM D6476 method is 6.0% or less, a CV value of the air permeability at a differential pressure of 500 Pa by the ASTM D3886 method is 10.0% or less, and a CV value of the air permeability at a differential pressure of 20 KPa is 10.0% or less, which are measured every 20 cm in a weft direction of the base fabric.
First claim
Opening claim text (preview).
The invention claimed is: 1. A non-coated base fabric for an airbag made of a polyamide fiber, wherein CV values of air permeability of (A) to (C) measured every 20 cm in a weft direction of the base fabric satisfy: (A) a CV value of dynamic air permeability by the ASTM D6476 method is 6.0% or less, (B) a CV value of air permeability at a differential pressure of 500 Pa by the ASTM D3886 method is 10.0% or less, and (C) a CV value of the air permeability at a differential pressure of 20 KPa according to JIS L 1096 is 10.0% or less wherein the non-coated base fabric is manufactured by a method comprising a heat setting step and a step of adjusting the surface temperature of the base fabric before the heat setting step. 2. The non-coated base fabric for an airbag of claim 1 , wherein a CV value of tensile strength measured every 20 cm in a weft direction of the base fabric is 1.5% or less, and a CV value of tear strength is 3.0% or less. 3. A method of manufacturing the non-coated base fabric for an airbag of claim 1 , the method comprising: a heat setting step and a step of adjusting the surface temperature of the base fabric before the heat setting step, wherein, after adjusting the surface temperature of the base fabric to 40 to 70° C., the heat setting step is performed. 4. An airbag in which the non-coated base fabric for an airbag of claim 1 is sewn. 5. The method of manufacturing the non-coated base fabric of claim 3 , further comprising: a step of scouring and a step of drying a woven fabric before the step of adjusting the surface temperature of the base fabric and the heat setting step is performed after adjusting the surface temperature of the base fabric dried by a step of drying to 40 to 70° C.
Assignees
Inventors
Classifications
- D03D15/283Primary
synthetic polymer-based, e.g. polyamide or polyester fibres (cellulose-based artificial fibres D03D15/225) · CPC title
- D03D1/02Primary
Inflatable articles · CPC title
Setting · CPC title
Air bags · CPC title
polyamides (D10B2331/08 takes precedence) · CPC title
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- What does patent US11761126B2 cover?
- A non-coated base fabric for an airbag is made of a polyamide fiber, wherein a CV value of the dynamic air permeability by the ASTM D6476 method is 6.0% or less, a CV value of the air permeability at a differential pressure of 500 Pa by the ASTM D3886 method is 10.0% or less, and a CV value of the air permeability at a differential pressure of 20 KPa is 10.0% or less, which are measured every 2…
- Who is the assignee on this patent?
- Toray Industries
- What technology area does this patent fall under?
- Primary CPC classification D03D15/283. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Sep 19 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).