Patent ID: 11885043
Assignee: KANEKA CORPORATION
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D  A | IPC A  D

Claim 0:
1. An acrylic fiber for artificial hair comprising an acrylic copolymer,
wherein the acrylic fiber has a fiber cross section comprising 2 or more and 4 or less T-shaped protrusions that extend radially from a central portion, and each of the T-shaped protrusions has an arc-shaped upper side that bulges in a direction away from the central portion,
wherein a circumradius of the fiber cross section is 40.0 μm or more and 60.0 μm or less, a distance between adjacent end portions of corresponding upper sides of adjacent T-shaped protrusions is 3.0 μm or more and 60.0 μm or less, and an axial width is 10.0 μm or more, and a torsional rigidity of the acrylic fiber is 0.30 mg·cm2 or more and 2.0 mg·cm2 or less.