Artificial leather and manufacturing method therefor
US-2024384463-A1 · Nov 21, 2024 · US
Sheet-like material and method for producing same
US9932705B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9932705-B2 |
| Application number | US-201113634672-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 9, 2011 |
| Priority date | Mar 16, 2010 |
| Publication date | Apr 3, 2018 |
| Grant date | Apr 3, 2018 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Disclosed is a sheet-like material which is produced by an environmentally friendly procedure and has an elegant appearance with piloerection, good wear resistance and good texture. Specifically disclosed is a sheet-like material containing a water-dispersed polyurethane within a fibrous base that contains extra-fine fibers having an average single fiber diameter of 0.3-7 um. The inside of the water-dispersed polyurethane is provided with pores each having a diameter of 10-200 um. Also specifically disclosed is a method for producing a sheet-like material by applying a polyurethane liquid to a fibrous base, wherein the polyurethane liquid is a water-dispersed polyurethane liquid that contains a foaming agent and a dry film of the polyurethane that constitutes the polyurethane liquid has a 100% modulus of 3-8 MPa.
First claim
Opening claim text (preview).
The invention claimed is: 1. A sheet-like material comprising polyurethane provided with a coagulation of water-dispersed polyurethane, wherein the polyurethane is contained in a fibrous base formed of extra-fine fibers with an average single fiber diameter of 0.3 - 7 μm, wherein the polyurethane contains pores with a diameter of 10 - 200 μm, and wherein the polyurethane is uniformly distributed across a thickness direction of the fibrous base. 2. A sheet-like material as set forth in claim 1 , wherein the density of said sheet-like material is 0.2 - 0.7 g/cm 3 .
Assignees
Inventors
Classifications
by a chemical blowing agent · CPC title
Polyurethanes · CPC title
obtained by blowing or swelling agent · CPC title
by heating, steam · CPC title
Clothing · CPC title
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Frequently asked questions
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- What does patent US9932705B2 cover?
- Disclosed is a sheet-like material which is produced by an environmentally friendly procedure and has an elegant appearance with piloerection, good wear resistance and good texture. Specifically disclosed is a sheet-like material containing a water-dispersed polyurethane within a fibrous base that contains extra-fine fibers having an average single fiber diameter of 0.3-7 um. The inside of the …
- Who is the assignee on this patent?
- Koide Gen, Yanai Katsufumi, Toray Industries
- What technology area does this patent fall under?
- Primary CPC classification D06N3/0004. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Apr 03 2018 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).