HIGH-SHRINKAGE ARTIFICIAL FIBROIN SPUN YARN, METHOD FOR MANUFACTURING SAME, ARTIFICIAL FIBROIN SPUN YARN, AND METHOD FOR SHRINKING SAME

摘要

The present invention pertains to a high-shrinkage artificial fibroin spun yarn that is a shrunken artificial fibroin spun yarn including modified fibroin, wherein the shrinkage rate defined in formula I exceeds 1%. (Formula I) Shrinkage rate = {1 – (length of shrunken artificial fibroin spun yarn/length of artificial fibroin spun yarn after spinning and before contact with water)} × 100 (%)