Protein fiber crimping method, protein fiber production method, protein fibers, spun yarn, and textile product

Patent metadata

Field	Value
Publication number	US-12018405-B2
Application number	US-201916982612-A
Country	US
Kind code	B2
Filing date	Mar 20, 2019
Priority date	Mar 22, 2018
Publication date	Jun 25, 2024
Grant date	Jun 25, 2024

Abstract

A protein fiber having a crimp property, such that the protein fiber crimps in response to a stimulus, is immersed in a solution of protein having a different composition from the protein fiber. The protein fiber treated with the different protein composition is infiltrated into the protein and the protein fiber is made to crimp.

First claim

What is claimed is:

1. A crimping method comprising:
a step for immersing protein fiber having crimp property such that the protein fiber crimps in response to a stimulus, in a solution of protein having a different composition from the protein fiber; and
a step for infiltrating said protein having the different composition into said protein fiber and crimping said protein fiber; wherein
said protein is artificial spider silk protein; and
said solution of protein is an aqueous solution of hydrolyzed keratin having a number averaged molecular weight not less than 500 and not more than 5000.

2. The crimping method of claim 1 , wherein staples of filaments of said protein fiber are immersed in said solution of protein.

3. The crimping method of claim 2 , wherein spun yarn made of said staples twisted together is immersed in said solution of protein.

4. The crimping method of claim 3 , wherein a textile product made of said spun yarn is immersed in said solution of protein, said staples in the textile product are made crimped, and the textile product is fulled.

5. The crimping method of claim 4 , wherein said textile product is immersed in said solution of protein under a condition that impact is not applied to said textile product.

6. The crimping method of claim 1 , wherein concentration of said hydrolyzed keratin before immersing said textile product is not less than 0.1 mass % and not more than 2 mass % and an immersing period of said textile product is not less than 5 minutes and not more than 120 minutes.

7. The crimping method of claim 1 , wherein said aqueous solution of hydrolyzed keratin is at a temperature range of 30 degree Celsius to 60 degree Celsius.

8. The crimping method of claim 1 , wherein dyeing affinity of said protein fiber is made improved by said protein having the different composition.

9. The crimping method of claim 1 , wherein said protein fiber is immersed in the aqueous solution of said hydrolyzed keratin for at least 40 minutes and utmost 80 minutes.

Assignees

• Shima Seiki Mfg
• Spiber Inc

Inventors

• Torigoe Shozo
• Shimoda Seiji
• Ozeki Akihiko

Classifications

• D06M2101/12

  Keratin fibres or silk · CPC title

• D06M15/15

  Proteins or derivatives thereof · CPC title

• D02G1/00

  Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics (yarns per se D02G3/00; during formation of artificial filaments, threads, or the like D01D5/22; general aspects of chemical treatment D06M) · CPC title

• C07K14/43518 Primary

  from spiders · CPC title

• D06P1/46

  using compositions containing natural macromolecular substances or derivatives thereof · CPC title