A problem to be solved of the invention is to provide a fiber for artificial hair comprising polyamide, which has a glossy feeling with suppressed luster similar to natural hair, is excellent in persistent antistatic properties, and also excellent in heat-setting properties. The means for solving the problem is a fiber for artificial hair comprising a thermoplastic polyamide and a polymeric antistatic agent having compatibility with the thermoplastic polyamide, wherein the polymeric antistatic agent has a melting point equal to or lower than the melting point of the thermoplastic polyamide.

A fiber-treating agent, where the fiber-treating agent is a one part fiber-treating agent including a single composition or a multiple-part fiber-treating agent including a plurality of compositions. The fiber-treating agent contains the following components (A) to (C) in a total composition thereof, and where, for the one-part fiber-treating agent, a part or all of the components (A) and (B) is optionally a condensate formed from the components: (A): a compound having a structure wherein a methylol group is bonded to each of two nitrogen atoms in the compound, (B): a phenolic compound having an electron donating group on at least one of meta-positions and a hydrogen atom on at least one of ortho-positions and a para-position, wherein the electron donating group on the meta-position optionally forms, together with adjacent carbon atoms, a benzene ring optionally substituted with a hydroxy group, and (C): water.

A fiber for artificial hair, the fiber comprising a synthetic resin and a microparticle, wherein a content difference |C.sub.1-C.sub.2| between a content C.sub.1 of a microparticle of smaller than 2 ?m in particle size, and a content C.sub.2 of a microparticle of 2 ?m or larger and smaller than 5 ?m in particle size is 70% by mass or less based on the total amount of the microparticle, and the content of a microparticle of 5 ?m or larger in particle size, C.sub.3, is less than 25% by mass based on the total amount of the microparticle.

One or more embodiments of the present disclosure relate to a core-sheath conjugate fiber for artificial hair including a core and a sheath. The core is composed of a polyester-based resin composition containing a polyester-based resin as a main component, and the sheath is composed of a polyamide-based resin composition containing a polyamide-based resin as a main component. The sheath contains at least one organic pigment selected from the group consisting of (a) a nickel complex pigment in which nickel and an organic dye structure are in a coordinate bond at a ratio of 1:1 or 1:2, (b) a chromium complex pigment in which chromium and an organic dye structure are in a coordinate bond at a ratio of 1:1 or 1:2, and (c) an organic pigment that contains no metal and contains a nitro group. The core contains a pigment that is different from that of the sheath. As a result, core-sheath conjugate fibers for artificial hair having a texture that is similar to that of human hair and having favorable coloring properties and spinnability, hair ornaments including the core-sheath conjugate fibers for artificial hair, and a method for producing the core-sheath conjugate fibers for artificial hair are provided.

An acrylic fiber for artificial hair includes an acrylic polymer and an organic solvent that can dissolve the acrylic polymer, wherein the acrylic polymer includes 29.5 to 79.5% by weight of acrylonitrile, 20 to 70% by weight of vinyl chloride and/or vinylidene chloride, and 0.5 to 5% by weight of a sulfonic acid-containing vinyl monomer with respect to a total weight of the acrylic polymer, and wherein a content of the organic solvent in the acrylic fiber is 0.1 to 3% by weight.

The present invention is to provide a fiber for artificial hair which can freely change the hairstyle at home while maintaining the wave shape of the fiber.

A fiber for artificial hair having a bending rigidity maintaining ratio defined by formula (1) is 40 to 80% and a heat shrinkage ratio defined by formula (2) is 0.0 to 5.0% is provided.

bending rigidity maintaining ratio (%)=100{(bending rigidity in a state after conditioning for 24 hours at 30 C.90% RH)/(bending rigidity in a state after conditioning for 24 hours at 23 C.50% RH)}(1)

heat shrinkage ratio (%)=100{(length before heat treatment)(length after heat treatment for 5 min at 155 C.)}/(length before heat treatment)(2).

An acrylic fiber for artificial hair includes an acrylic polymer, wherein the acrylic polymer includes 29.5 to 79.5% by mass of acrylonitrile, 20 to 70% by mass of vinyl chloride and/or vinylidene chloride, and 0.5 to 5% by mass of a vinyl monomer comprising a sulfonic acid group. The acrylic fiber for artificial hair includes 0.3 to 2% by mass of a good solvent for the acrylic polymer and 0.1 to 5% by mass of a compound comprising an epoxy group.

A hair knotting system comprises one or more hair knotting apparatuses, installed along the feed direction of the thread, for knotting hair on a thread. The hair knotting apparatus comprises: an insertion groove into which one or more strands of hair are inserted; a hair insertion member having a pull-out hole on the bottom surface of the insertion groove; a hair pull-out member for taking hold and pulling out the hair, which has been inserted in the insertion groove, through the pull-out hole so as to be positioned past the thread from below, and forming a knotting hole as the thread and hair connect; a hair knotting member penetrating the knotting hole from bottom to top to be positioned above the thread; and a hair winding member for taking hold of both ends of the hair pulled out from the hair insertion member, and winding both ends of the hair while rotating around the hair knotting member past the thread from above, wherein the hair knotting member knots the hair on the thread by pulling both ends of the wound hair downward through the knotting hole.

The present invention is an apparatus for head wear comprising a swimming cap portion that is breathable, and protects the hair and scalp of the user from water and other watery substance(s); and a wig portion that has the versatility/appearance of natural hair, and retains a desired style even after multiple use.

A new synthetic braiding hair and its manufacturing methods are disclosed. The synthetic braiding hair is comprised of a plurality of the first synthetic fibers configured to have natural ending shape; a plurality of the second synthetic fibers configured to be half-length of the plurality of the first synthetic fibers and have natural ending shape; and the plurality of the second synthetic fibers is combined in the middle of the plurality of the first synthetic fibers and folded together to form a hook.