A core-sheath conjugate fiber for artificial hair includes a core part and a sheath part. The core-sheath conjugate fiber for artificial hair is a colored fiber. The core part has a lightness L* of 10 or less in the CIE1976 color space and the sheath part has a lightness L* of 15 or more in the CIE1976 color space. With this configuration, the core-sheath conjugate fiber for artificial hair that has deep and natural colors similar to those of human hair and a good appearance, a hair ornament product including the same, and a method for producing the same are provided.

Embodiments of the present disclosure relate to a violacein-polymer composite nanofibrous antimicrobial membrane and a method for manufacturing same, wherein the membrane comprises violacein having antimicrobial efficacy against methicillin-resistant Staphylococcus aureus (MRSA) caused by resistance to antibiotics and is formed such that one-dimensional nanofibers are three-dimensionally entangled, and can be used as an antimicrobial membrane for preventing and treating MRSA infections. Specifically, a solution in which violacein is uniformly mixed is prepared by dissolving a large amount of violacein in a solution with a polymer dissolved therein, and the solution is subjected to an electrospinning process to synthesize a nanofibrous membrane in which violacein is uniformly included inside/outside nanofibers without agglomeration. Thus, this is different from existing methods for applying a material to the surface of fibers.

A core-sheath conjugate fiber for artificial hair including a core part and a sheath part is provided. The core part includes of a polyester-based resin composition that contains a polyester-based resin as a main component and the sheath part includes a polyamide-based resin composition that contains a polyamide-based resin as a main component. The core-sheath conjugate fiber for artificial hair has a core-to-sheath area ratio of core:sheath=2:8 to 8:2 and a flat two-lobed cross sectional shape, and the polyamide-based resin composition has a melt viscosity of 140 Pa.Math.s or less and contains a pigment. With this configuration, a core-sheath conjugate fiber for artificial hair in which exposure of the core part is suppressed and that has a touch close to that of human hair and an improved combing property, a hair ornament product including the same, and a method for producing the same are provided.

A core-sheath conjugate fiber for artificial hair including a core part and a sheath part is provided. The core part includes of a polyester-based resin composition that contains a polyester-based resin as a main component and the sheath part includes a polyamide-based resin composition that contains a polyamide-based resin as a main component. The core-sheath conjugate fiber for artificial hair has a core-to-sheath area ratio of core:sheath=2:8 to 8:2 and a flat two-lobed cross sectional shape, and the polyamide-based resin composition has a melt viscosity of 140 Pa.Math.s or less and contains a pigment. With this configuration, a core-sheath conjugate fiber for artificial hair in which exposure of the core part is suppressed and that has a touch close to that of human hair and an improved combing property, a hair ornament product including the same, and a method for producing the same are provided.

A plurality of colored filament bundles are initially extruded separately, cooled and each combined into a partial thread. The partial threads are then separately pre-swirled and stretched individually or as a partial composite thread formed from a plurality of partial threads. Crimping then occurs. After the crimping, the partial threads and the partial composite thread are combined into a composite thread and wound into a coil. In accordance with certain techniques, a melt spinning apparatus has a pre-swirling apparatus having a plurality of swirling nozzles, a post-swirling device having a plurality of post-swirling nozzles and a crimping device having a plurality of texturing nozzles, wherein the nozzles are designed such that an individual partial thread or a partial composite thread formed from a plurality of partial threads can optionally be processed.

The present invention provides an artificial hair and a method for producing same. The method for producing an artificial hair according to the present invention comprises: a step of mixing polyamide 6 powder and a master batch at a predetermined weight ratio; a step of drawing an artificial hair from the mixture; a step of forming a loop part by knotting a distal end of the drawn artificial hair; a step of cutting the distal end of the artificial hair, leaving just 1-1.5 mm from the knotted part of the loop part; a step of trimming the artificial hair to a predetermined length after the cutting; and a step of bundling a plurality of the trimmed artificial hair.

The present invention provides an artificial hair and a method for producing same. The method for producing an artificial hair according to the present invention comprises: a step of mixing polyamide 6 powder and a master batch at a predetermined weight ratio; a step of drawing an artificial hair from the mixture; a step of forming a loop part by knotting a distal end of the drawn artificial hair; a step of cutting the distal end of the artificial hair, leaving just 1-1.5 mm from the knotted part of the loop part; a step of trimming the artificial hair to a predetermined length after the cutting; and a step of bundling a plurality of the trimmed artificial hair.

A method of forming a color-changing fiber that can be incorporated into fabrics and other woven materials. The color changing fibers include an annular wall and a conductive wire axially extending through the annular wall, a core strand surrounded by the annular wall and extending axially through a central portion of the fiber, and an encapsulated electro-optic medium disposed on a surface of the core strand.

The invention provides polypropylene compositions for producing soft nonwoven fabrics, consisting of at least three propylene-based copolymers differing in content of alpha-olefin comonomers. The provided fabrics are soft and pleasant to touch.

The invention provides polypropylene compositions for producing soft nonwoven fabrics, consisting of at least three propylene-based copolymers differing in content of alpha-olefin comonomers. The provided fabrics are soft and pleasant to touch.