Polyamide hollow fiber for artificial hair, head accessory including same, and method for manufacturing polyamide hollow fiber for artificial hair
AssigneeKaneka Corporation
InventorsHitoshi SHIMAMOTO, Masaru ANAHARA
Life of this patent
Estimating the term…
Abstract
Provided are an artificial hair fiber having a soft texture and appearance close to human hair, and being light in weight; and a head accessory including the artificial hair fiber. A polyamide fiber for artificial hair includes a resin composition that includes a polyamide resin as a primary component resin, and is a hollow fiber having a void in the cross-sectional center section, the void percentage of the polyamide fiber is 15-40%, the fiber specific gravity of the polyamide fiber is 0.80-1.10, and the bend rigidity of the polyamide fiber is 1.5×10−3 to 5.5×10−3 gf·cm2/yarn.
Claims10
A polyamide hollow fiber for use as artificial hair,
- the fiber having a bore,
- the bore having a polygonal shape that includes a first side approximately perpendicular to the long axis of the cross-section of the fiber;
- and a second side approximately perpendicular to the long axis of the cross-section of the fiber,
- the fiber comprised of a resin composition comprising a polyamide resin as a main resin component,
- wherein
- a void fraction of the fiber is from 15 to 40%,
- a specific gravity of the fiber is from 0.80 to 1.10, and
- a bending stiffness of the fiber is from 1.5×10−3 to 5.5×10−3 gf·cm2/yarn.
Dependencies are inferred from the claim text.