Fiber for artificial hairs, artificial hair, method for producing fiber for artificial hairs, and method for producing artificial hair
AssigneesAderans Co., Ltd., Crane Co.
InventorsMasatoshi Seki, Hideki Takahashi, Ren Ito, Yunosuke Abe
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Abstract
Disclosed is a fiber for artificial hairs that is given a predetermined shape, the fiber being formed from a synthetic fibroin fiber containing a modified fibroin, and the fiber expanding when placed in a wet state and contracting when dried from a wet state. Also disclosed is a method for producing a fiber for artificial hairs that is given a predetermined shape, the method including retaining a fibroin fiber containing a modified fibroin in a state conforming to a predetermined shape. A wetted fibroin fiber may also be heated while being retained in a state conforming to a predetermined shape.
Claims15
An artificial hair comprising a fiber bundle comprising a plurality of single yarns of fiber, each yarn having a diameter of about 15 μm or more, and wherein at least one of the single yarns of fiber has a predetermined shape including a curved part,
- the fiber comprising a synthetic fibroin fiber containing a modified fibroin, and
- the artificial hair expanding when placed in a wet state and contracting when dried from a wet state,
- wherein the modified fibroin comprises a protein containing a domain sequence represented by Formula 1:
- [(A)n motif-REP]m or Formula 2:
- [(A)n motif-REP]m-(A)n motif,
- wherein the (A)n motif comprises an amino acid sequence including alanine residues, a proportion of a number of alanine residues with respect to a total number of amino acid residues in the (A)n motif is 40% or more, and wherein REP comprises an amino acid sequence containing from 2 to 200 amino acid residues.
Dependencies are inferred from the claim text.