Base for artificial leather
US-2015252524-A1 · Sep 10, 2015 · US
Composite sheet material
US11084260B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11084260-B2 |
| Application number | US-201816613862-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 2, 2018 |
| Priority date | May 18, 2017 |
| Publication date | Aug 10, 2021 |
| Grant date | Aug 10, 2021 |
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- Title
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- Abstract
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Abstract
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A composite sheet material includes a skin sheet and a woven fabric, wherein the skin sheet is formed by impregnating an elastic polymer into a base material consisting of an entangled fiber network, such as a nonwoven fabric, and wherein the composite sheet material has high thermal resistance and high formability suitable for integral molding. The composite sheet material is a composite sheet material including a skin sheet attached with a woven fabric through an adhesive resin layer, wherein the skin sheet is made of an entangled fiber network including ultra-fine fibers with an average single fiber diameter of 0.1 to 8 μm and of an elastic polymer, and wherein the woven fabric includes polyester fibers in which the polyester contains a 1,2-propanediol-derived component at a concentration of 1 to 500 ppm.
First claim
Opening claim text (preview).
The invention claimed is: 1. A composite sheet material comprising a skin sheet attached with a woven fabric through an adhesive resin layer, wherein 1) the skin sheet is made of an entangled fiber network comprising ultra-fine fibers with an average single fiber diameter of 0.1 to 8 μm and an elastic polymer, 2) the woven fabric comprises polyester fibers in which the polyester contains a 1,2-propanediol-derived component at a concentration of 1 to 500 ppm, and 3) an adhesive resin that forms the adhesive resin layer is a moisture-curable resin comprising a polyurethane resin. 2. The composite sheet material according to claim 1 , wherein the woven fabric has a modulus of not less than 5 N/cm and not more than 40 N/cm at 10% deformation of a circular specimen in an arbitrary direction, and has an elongation at break of not less than 25% in an arbitrary direction. 3. The composite sheet material according to claim 1 , wherein the entangled fiber network comprises polyester fibers in which the polyester contains a 1,2-propanediol-derived component at a concentration of 1 to 500 ppm.
Assignees
Inventors
Classifications
moisture curable · CPC title
Polyurethanes · CPC title
with polyurethanes · CPC title
comprising polyesters · CPC title
on fibrous or filamentary layer · CPC title
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Frequently asked questions
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- What does patent US11084260B2 cover?
- A composite sheet material includes a skin sheet and a woven fabric, wherein the skin sheet is formed by impregnating an elastic polymer into a base material consisting of an entangled fiber network, such as a nonwoven fabric, and wherein the composite sheet material has high thermal resistance and high formability suitable for integral molding. The composite sheet material is a composite sheet…
- Who is the assignee on this patent?
- Toray Industries
- What technology area does this patent fall under?
- Primary CPC classification B32B5/26. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 10 2021 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).