Supercontracting fiber textiles
US-2018282937-A1 · Oct 4, 2018 · US
Modified Fibroin Fibers
US2022074077A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022074077-A1 |
| Application number | US-201917279081-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 27, 2019 |
| Priority date | Sep 28, 2018 |
| Publication date | Mar 10, 2022 |
| Grant date | — |
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Abstract
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The present invention provides a modified fibroin fiber having a shrinkage history of being irreversibly shrunk after spinning, the modified fibroin fiber containing modified fibroin, wherein a fiber diameter of a raw material fiber before being irreversibly shrunk exceeds 25 μm.
First claim
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1 . A modified fibroin fiber having a shrinkage history of being irreversibly shrunk after spinning, the modified fibroin fiber comprising modified fibroin, wherein a fiber diameter of a raw material fiber before being irreversibly shrunk exceeds 25 μm. 2 . The modified fibroin fiber according to claim 1 , wherein the shrinkage history is a shrinkage history of being irreversibly shrunk by bringing the raw material fiber into contact with water or a shrinkage history of being irreversibly shrunk by heating and relaxing the raw material fiber. 3 . The modified fibroin fiber according to claim 1 , wherein there is substantially no residual stress generated by drawing during a spinning process. 4 . The modified fibroin fiber according to claim 1 , wherein a shrinkage rate is 3.3% or less, the shrinkage rate being defined by the following Equation (1): Shrinkage rate (%)=(1−(length of modified fibroin fiber when dried from wet state/length of modified fibroin fiber when in wet state))×100. 5 . The modified fibroin fiber according to claim 1 , wherein the modified fibroin is modified spider silk fibroin. 6 . The modified fibroin fiber according to claim 1 , wherein the modified fibroin is hydrophobic-modified spider silk fibroin. 7 . The modified fibroin fiber according to claim 1 , wherein the modified fibroin fiber has a fiber diameter of less than ±20% of the fiber diameter of the raw material fiber before being irreversibly shrunk. 8 . The modified fibroin fiber according to claim 1 , wherein a sectional shape is a circular shape or an elliptical shape. 9 . A product comprising the modified fibroin fiber according to claim 1 . 10 . The product according to claim 9 , wherein the product is selected from the group consisting of a fiber, a yarn, a fabric, a knitted fabric, a braided fabric, a non-woven fabric, a paper, and cotton. 11 . A production method of a modified fibroin fiber, comprising a shrinking step of irreversibly shrinking a raw material fiber, wherein the raw material fiber contains modified fibroin, and before the shrinking step, the raw material fiber has a fiber diameter of more than 25 μm. 12 . The production method according to claim 11 , wherein in the shrinking step, the raw material fiber is irreversibly shrunk by bringing the raw material fiber into contact with water, or the raw material fiber is irreversibly shrunk by heating and relaxing the raw material fiber. 13 . A modified fibroin fiber comprising modified fibroin, wherein the modified fibroin fiber has a fiber diameter of more than 25 μm, and a shrinkage rate is 3.3% or less, the shrinkage rate being defined by the following Equation (1): Shrinkage rate (%)=(1−(length of modified fibroin fiber when dried from wet state/length of modified fibroin fiber when in wet state))×100. 14 . The modified fibroin fiber according to claim 13 , wherein the modified fibroin fiber has a shrinkage history of being irreversibly shrunk after spinning. 15 . The modified fibroin fiber according to claim 14 , wherein the modified fibroin fiber has a fiber diameter of less than ±20% of a fiber diameter of a raw material fiber before being irreversibly shrunk.
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Frequently asked questions
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- What does patent US2022074077A1 cover?
- The present invention provides a modified fibroin fiber having a shrinkage history of being irreversibly shrunk after spinning, the modified fibroin fiber containing modified fibroin, wherein a fiber diameter of a raw material fiber before being irreversibly shrunk exceeds 25 μm.
- Who is the assignee on this patent?
- Spiber Inc
- What technology area does this patent fall under?
- Primary CPC classification D01F4/02. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Thu Mar 10 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).