Modified Fibroin Fibers
AssigneeSpiber Inc.
InventorsYunosuke Abe, Masato Matsuo, Shota Togashi
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Abstract
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.
Claims15
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.
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.
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.
Dependencies are inferred from the claim text.