JP2010144261A - Artificial hair and hair ornament product formed of the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide artificial hair suppressed in surface luster thereof, forming slender smooth unevenness, achieving luster feeling and chromogenic property close to those of human hair, and having excellent sense of touch and combing property, by including specific organic particulates at a specific ratio followed by dispersion having a specific particle diameter and orienting in parallel to a fiber axial direction of the artificial hair; and to provide a hair ornament product formed of the same. <P>SOLUTION: The artificial hair is obtained by including in 100 mass pts.wt. of (A) thermoplastic resin, 0.5-5.0 mass pts.wt. of (B) organic particulates having at least one shape selected from the group consisting of a convex lens shape, an oval spherical shape, an oval semi-spherical shape, a rugby ball shape, a cigar shape, a cylindrical shape and a semi-cylindrical shape, and fiberizing the product. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to artificial hair that can be used as a substitute for human hair, and in particular, is suitably used as a head ornament product such as weaving, wig, two-pee, hair extension, or hair accessory that suppresses the gloss that is a drawback of artificial hair. The present invention relates to artificial hair and a headdress product comprising the same.

  Human hair was initially used as a fiber material for hair used in hair wigs, two-pieces, extensions, hair accessories, doll hairs, etc., but in recent years, it has become difficult to obtain human hair. Alternatives to hair fiber materials (for example, acrylic fibers such as modacrylic fibers, polyvinyl chloride fibers, polyester fibers, etc.) are in progress.

  The above-mentioned various fiber materials for artificial hair have a strong gloss on the fiber surface, and when used for wigs such as hair wigs and two-piece hair ornaments such as hair wigs and two-piece hairs, Due to the difference, there was a problem that the whole hair was uncomfortable.

As a method for adjusting the glossiness, for example, a technique for adjusting the gloss of a fiber by using a polyester-based fiber containing organic particles or inorganic particles in a polyester-based artificial hair fiber is disclosed (patent) Even if a polyester fiber containing organic fine particles or inorganic fine particles is used, it has been difficult to suppress the gloss level to the same level as human hair. Further, it is possible to suppress gloss by increasing the amount of organic fine particles or inorganic fine particles added, but the color developability (hue) is lowered, the appearance is close to human hair, and the color developability is excellent. Artificial hair using polyester fibers with sufficiently suppressed gloss has not been obtained.
JP 2005-42234 A

  It is an object of the present invention to provide artificial hair having artificial luster that has a luster that is closer to that of human hair by suppressing luster and that has high color developability and that maintains tactile sensation and combing properties, and a headdress product comprising the same. To do.

  As a result of intensive studies to solve the above-mentioned problems, the inventors of the present invention contain organic fine particles in a specific ratio, disperse them with a specific particle diameter, and orient in parallel to the fiber axis direction of artificial hair. It is found that the surface gloss of artificial hair is suppressed, long and smooth irregularities are formed, glossiness and color development similar to human hair are realized, and good touch and combing properties can be imparted. The invention has been completed.

  That is, the present invention is at least one selected from the group consisting of a convex lens shape, an elliptical sphere shape, an elliptical hemispherical shape, a rugby ball shape, a cigar shape, a cylindrical shape, and a semicylindrical shape with respect to 100 parts by mass of the thermoplastic resin (A). It consists of artificial hair containing 0.5 to 5.0 parts by mass of organic fine particles (B) having the following shape. The thermoplastic resin (A) is preferably at least one resin selected from the group consisting of polyolefin resins, polyvinyl chloride resins, polyamide resins, and polyester resins. In order to obtain a higher effect, it is preferable that the major axis of 60% or more of the organic fine particles (B) is oriented in parallel to the fiber axis of the artificial hair, and the average of the organic fine particles (B) The particle diameter is preferably 1 to 10 μm, and the ratio of the major axis to the minor axis is preferably major axis / minor axis = 1.2 / 1 to 5/1.

  As described above, according to the present invention, the artificial hair containing the thermoplastic resin (A) and the organic fine particles (B) can exhibit glossiness and color developability close to human hair. The organic fine particles (B) have at least one shape selected from the group consisting of a convex lens shape, an elliptical sphere shape, an elliptical hemispherical shape, a rugby ball shape, a cigar shape, a cylindrical shape, and a semicylindrical shape, and artificial hair It is preferable from the point that favorable tactile sensation and combing property can be obtained by being oriented parallel to the fiber axis.

  According to the present invention, artificial hair can be provided with artificial hair having a glossiness close to that of human hair and a high color development property while suppressing gloss, and having excellent touch and combing properties.

  The present invention will be specifically described below. The artificial hair of the present invention is artificial hair containing 0.5 to 9.0 parts by mass of organic fine particles (B) with respect to 100 parts by mass of the thermoplastic resin (A).

  The thermoplastic resin (A) used in the present invention is at least one selected from the group consisting of polyolefin resins, polyvinyl chloride resins, polyamide resins, and polyester resins. Specifically, polypropylene, polyethylene, etc. Polyolefin resins, polyvinyl chloride, polyvinyl chloride resins such as copolymerized polyvinyl chloride, polyamide resins such as nylon 6, nylon 6,6, nylon 6,12, copolymer nylon, polyethylene terephthalate, poly Examples thereof include polyester resins such as trimethylene terephthalate and polybutylene terephthalate.

  The organic fine particles (B) used in the present invention have at least one shape selected from the group consisting of a convex lens shape, an elliptical sphere shape, an elliptical hemispherical shape, a rugby ball shape, a cigar shape, a cylindrical shape, and a semicylindrical shape. .

  The organic fine particles (B) are preferably made of a crosslinked acrylic resin from the viewpoints of affinity with the thermoplastic resin (A), difference in refractive index, and the like.

  The organic fine particles (B) are composed of 70 to 99.5 parts by mass of a polymerizable monofunctional vinyl monomer, an unsaturated organic acid allyl ester monomer, an aliphatic dicarboxylic acid divinyl ester monomer, and (meth) acrylic. In 100 parts by mass of a monomer mixture of 0.5 to 30 parts by weight of a polymerizable polyfunctional vinyl monomer selected from acid vinyl ester monomers, the monomer mixture does not have copolymerizability, 5 to 50 parts by weight of a hydrophobic liquid compound having a viscosity at 25 ° C. of 10 to 1,000,000 cSt is uniformly mixed and subjected to aqueous suspension polymerization. The resulting product is isolated, It can obtain by processing with the solvent which has compatibility with a property liquid compound.

  The number average particle diameter of the organic fine particles (B) is 1 to 10 μm, more preferably 1.5 to 8 μm, and particularly preferably 2 to 6 μm. If the number average particle diameter is in the range of 1 μm to 10 μm, it is preferable in terms of the size of the irregularities formed on the fiber surface, glossiness, tactile sensation, and combing.

  The ratio of the major axis to the minor axis of the organic fine particles (B) is 1.2 / 1 to 5/1, more preferably 1.5 / 1 to 4/1, and particularly 1.8 / 1 to 3/1. It is preferable that If the ratio of major axis to minor axis (also referred to as aspect ratio) is in the range of 1.2 / 1 to 5/1, organic fine particles parallel to the fiber axis direction will be oriented, tactile, combing, gloss suppressing effect, color development This is preferable.

  The blending ratio of the thermoplastic resin (A) and the organic fine particles (B) is 0.5 to 5.0 parts by mass of the organic fine particles (B) with respect to 100 parts by mass of the thermoplastic resin (A). It is preferable that it is 0.7-4.5 mass parts, especially 1.0-4 mass parts. If it exists in the range of 0.5-5.0 mass parts, it is preferable at the point of glossiness adjustment effect, transparency, and coloring property.

  The artificial hair obtained by the present invention contains at least one organic fine particle selected from the group consisting of a convex lens shape, an elliptical sphere shape, an elliptical hemispherical shape, a rugby ball shape, a cigar shape, a cylindrical shape, and a semicylindrical shape. Properties whose major axis is oriented parallel to the fiber axis direction of artificial hair, such as light scattering properties, fiber surface slipperiness (friction properties) that are not found in ordinary spherical fine particles, disk-shaped fine particles, and irregular fine particles ), And the properties of artificial hair such as suppression of gloss, color developability and touch, and combing are improved.

  The artificial hair in the present invention preferably further contains a flame retardant for the purpose of imparting flame retardancy. Specific examples of the flame retardant include trimethyl phosphate, triethyl phosphate, tributyl phosphate, tri (2-ethylhexyl) phosphate, triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, tris (isopropylphenyl) phosphate. , Tris (phenylphenyl) phosphate, trinephtyl phosphate, cresyl phenyl phosphate, xylenyl diphenyl phosphate, triphenyl phosphine oxide, tricresyl phosphine oxide, diphenyl methanephosphonate, diethyl phenylphosphonate, and resorcinol poly Phenyl phosphate, resorcinol poly (di-2,6-xylyl) phosphate, bisphenol A polycresyl phosphate Feto, hydroquinone poly (2,6-xylyl) phosphate, condensed phosphoric acid ester compounds, such as phosphoric acid ester amide compounds or organic cyclic phosphorus-based compounds.

  Specific examples of bromine-containing flame retardants include, for example, pentabromotoluene, hexabromobenzene, decabromodiphenyl, decabromodiphenyl ether, bis (tribromophenoxy) ethane, tetrabromophthalic anhydride, ethylenebis (tetrabromophthalimide) , Bromine-containing phosphate esters such as ethylenebis (pentabromophenyl), octabromotrimethylphenylindane, tris (tribromoneopentyl) phosphate, brominated polystyrenes, brominated polybenzyl acrylates, brominated epoxy oligomers, Brominated phenoxy resin, brominated polycarbonate oligomers, tetrabromobisphenol A, tetrabromobisphenol A-bis (2,3-dibromopropyl ether), tetrabromobispheno Tetrabromobisphenol A derivatives such as tri-A-bis (allyl ether), tetrabromobisphenol A-bis (hydroxyethyl ether), bromine-containing triazine compounds such as tris (tribromophenoxy) triazine, tris (2,3-dibromo) Bromine-containing isocyanuric acid compounds such as propyl) isocyanurate. These flame retardants may be used alone or in combination of two or more. Among these, phosphorous ester amide compounds, organic cyclic phosphorus compounds, and brominated flame retardants as phosphorous-containing flame retardants are brominated epoxy flame retardants and brominated phenoxy resin flame retardants. It is preferable from the point of being excellent.

  As content of the said flame retardant, it is 3-30 mass parts with respect to 100 mass parts of said thermoplastic resins (A), Furthermore, 6-25 mass parts, It is 7-20 mass parts especially. preferable. If it exists in the range of 3-30 mass parts, it is preferable at the point of a flame retardance effect, the hair set property of artificial hair, and the drip property at the time of flame contact. In the present invention, although flame retardancy is expressed by blending the flame retardant component, when using a silicone fiber treatment agent or when mixed with flammable artificial hair, The flame retardant level may be insufficient. In such a case, by adding a flame retardant aid, the flame retardant effect is remarkably improved, and a higher level of flame retardancy can be obtained.

  The flame retardant aid is not particularly limited, and specific examples thereof include, for example, melamine cyanurate, antimony trioxide, antimony tetroxide, antimony pentoxide, sodium antimonate, and these are used alone. Alternatively, two or more kinds may be used in combination. Among these, sodium antimonate is preferable from the viewpoint of the spinnability of the mixture.

  As content of the said flame-retardant adjuvant, it is preferable to contain 0.5 mass part or more, Furthermore, 1 mass part or more is contained. The average particle size of the flame retardant aid is preferably less than 1.5 μm, more preferably 1.4 μm or less, and even more preferably 1.3 μm or less. The lower limit of the average particle diameter is preferably more than 0.2 μm, more preferably 0.5 μm or more, and even more preferably 0.8 μm or more.

  The artificial hair of the present invention may further contain various additives such as heat resistance, light stability, a fluorescent agent, an antioxidant, an antistatic agent, and a pigment as necessary. The artificial hair of the present invention can be colored and used by a method of dyeing after spinning (post-dyeing method) or a method of blending and coloring pigments and dyes at the time of resin melt-kneading (original). When coloring by post-dying, it can be dyed under the same conditions as those for synthetic fibers such as ordinary polyester fibers. In addition, in the case of original attachment, the original attachment fiber can be obtained by melt-kneading a pigment used for a synthetic fiber such as a normal polyester fiber. As pigments, dyes, auxiliaries and the like used for dyeing, those having good weather resistance and flame retardancy are preferable.

  The artificial hair of the present invention is formed by melt-spinning a resin composition obtained by dry blending the above components and then melt-kneading using various general kneaders. Examples of the kneader used for the production of the resin composition include, for example, a single screw extruder, a twin screw extruder, a roll, a Banbury mixer, and a kneader. Among these, a twin screw extruder is preferable from the viewpoint of adjusting the degree of kneading and ease of operation.

  For example, as an example, when a resin composition containing polyethylene terephthalate and organic fine particles is melt-kneaded using a twin-screw extruder, a barrel setting temperature of about 260 to 300 ° C. can be mentioned. And the artificial hair of this invention is obtained by melt-spinning using the obtained resin composition. When the artificial hair of the present invention is melt-spun by a normal melt-spinning method, for example, the temperature of an extruder, a gear pump, a die, etc. is 250 to 300 ° C., melt-spun, and the spun yarn is used as a heating cylinder. After passing, the yarn is cooled below the glass transition point and taken up at a speed of 50 to 5000 m / min to obtain a spun yarn. It is also possible to control the fineness by cooling the spun yarn in a water tank containing cooling water. The temperature and length of the heating cylinder, the temperature and blowing amount of the cooling air, the temperature of the cooling water tank, the cooling time, and the take-up speed can be appropriately adjusted depending on the discharge amount and the number of holes in the die. In addition, as another method for obtaining the artificial hair of the present invention, a composition obtained by dry blending the above components is a twin screw extruder equipped with a gear pump and a spinning nozzle or a single screw extruder using a screw having kneading ability. The resin composition may be directly melt-spun without pelletizing the resin composition.

  In the present invention, the obtained spun yarn is hot-drawn, but the drawing is a two-step method in which the spun yarn is once wound and then drawn, and the direct spinning drawing in which the drawn yarn is continuously drawn without being wound. Any of the methods may be used. The hot stretching is performed by a one-stage stretching method or a multi-stage stretching method having two or more stages. As a heating means in the heat stretching, a heating roller, a heat plate, a steam jet device, a hot water tank, or the like can be used, and these can be used in combination as appropriate.

Furthermore, using oil agents, such as a fiber treatment agent and a softening agent, a touch and a touch can be provided, and it can be made closer to human hair. Examples of the fiber treatment agent include a silicone fiber treatment agent and a non-silicone fiber treatment agent for improving the tactile sensation and combing.
The artificial hair of the present invention uses the artificial hair fiber thus obtained.

  The fineness of the artificial hair of the present invention is preferably 10 to 100 dtex, more preferably 20 to 90 dtex.

  The artificial hair of the present invention thus obtained is moderately matte because the major axis of the organic fine particles is oriented parallel to the fiber axis direction and the protrusions are formed on the fiber surface. It can be suitably used as hair. Furthermore, artificial hair formed using a polyamide-based resin or a polyester-based resin is excellent in curl setting using a beauty heat instrument and excellent in curl retention. Therefore, it is preferably used as hair ornaments such as hair wigs, two-pieces, weaving, hair extensions, blades and hair accessories, and artificial hair such as doll hairs.

  Moreover, when producing these head ornament products, you may use combining the artificial hair of this invention, and natural fibers, such as other artificial hair, human hair, and animal hair.

  Next, the present invention will be described more specifically based on examples, but the present invention is not limited thereto.

The raw materials used in the examples and comparative examples are as follows.
Polypropylene: Nippon Polypro Co., Ltd., trade name: WFX4TA
Polyvinyl chloride: manufactured by Kaneka Corporation, trade name: S1001
Polyamide: manufactured by Unitika Ltd., trade name: A1030BRT
Polyethylene terephthalate: manufactured by Mitsubishi Chemical Corporation, trade name: BK-2180
Hydrotalcite heat stabilizer: manufactured by Kyowa Chemical Industry Co., Ltd., trade name: Alkamizer-1
Mixed lubricant: manufactured by Riken Vitamin Co., Ltd., trade name: TG-12, Riquester EW100, manufactured by Cognis Japan, trade name: Roxyol G70, manufactured by Mitsui Chemicals, Inc., trade name: High Wax 4202E, manufactured by Nippon Oil & Fats Co., Ltd. , Stearic acid, (mixing ratio) TG-12 / Rikestar EW100 / Roxyol G70 / High Wax 4202E / Stearic acid = 6/1/3/1/2
Processing aid: manufactured by Kaneka Co., Ltd., trade name: Kane Ace PA101 convex lens fine particles A (cross-linked acrylic resin): manufactured by Sekisui Plastics Co., Ltd., L-XX-419Z, average particle diameter 4 μm, aspect ratio 1.6 ( (Fig. 1)
Convex lens-shaped fine particles B (cross-linked acrylic resin): Sekisui Plastics, L-XX-913Z, average particle diameter 6 μm, aspect ratio 1.8
Oval hemispherical fine particles A (cross-linked acrylic resin): Matsumoto Yushi Seiyaku Co., Ltd., Matsumoto Microsphere M-310, average particle size 12.5 μm, aspect ratio 1.4
Elliptic hemispherical fine particles B (cross-linked acrylic resin): Matsumoto Yushi Seiyaku Co., Ltd., Matsumoto Microsphere M-311, average particle size 8 μm, aspect ratio 2.5 (FIG. 2)
Silica: manufactured by Tosoh Silica Co., Ltd., trade name: NIPGEL AZ-200, average particle size 3.5 μm
Cross-linked acrylic particles: Sekisui Chemical Co., Ltd., trade name: MBX-15, average particle size 15 μm
Phosphorus-containing flame retardant: cyclic phosphorus compound flame retardant, manufactured by Sanko Co., Ltd., trade name: M ester HP
Bromine-containing flame retardant: Brominated epoxy flame retardant, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd., trade name: SR-T20000
Pigment: Pigment master batch, carbon black 20wt%, manufactured by Dainichi Seika Kogyo Co., Ltd., trade name: PESM22367BLACK

(Examples 1-4, Comparative Examples 1-4)
Each component of the blending composition having the blending ratio shown in Table 1 was dry blended, supplied to a twin-screw extruder (manufactured by Nippon Steel Works, Ltd., TEX44), melt-kneaded at a barrel set temperature of 200 ° C., and pelletized. . Then, the dried pellets are supplied to a melt spinning machine (SV30, manufactured by Shinko Machinery Co., Ltd.), and a spinneret having a rectangular cross-section nozzle hole with a barrel setting temperature of 200 ° C. and a flatness ratio of 1.4: 1. More molten polymer was discharged, air-cooled with 20 ° C. cooling air, and wound at a speed of 100 m / min to obtain an undrawn yarn. The undrawn yarn was drawn 3.5 times using a heat roll heated to 50 ° C., heat treated with a heat roll heated to 110 ° C., wound up at a speed of 30 m / min, and the single fiber fineness was 60 dtex. Before and after polypropylene fibers (multifilament) were obtained.

  To the obtained polypropylene fiber, KWC-Q (Random copolymer polyether of ethoxide / propylene oxide; manufactured by Maruhishi Oil Chemical Co., Ltd.) / Processing agent 29 (cationic surfactant) which is a hydrophilic fiber treatment agent ; Manufactured by Maruhishi Oil Chemical Co., Ltd.) = 0.20 / 0.10% omf, an aqueous solution containing 0.80% of each pure component is prepared, and a tow filament having a total fineness of 100,000 dtex is prepared. The solution was adhered so that the liquid content was 25% based on the tow weight, and dried at 105 ° C. for 10 minutes using a hot air dryer.

(Examples 5-10, Comparative Examples 5-8)
Each component of the blend composition having the blend ratio shown in Table 2 was dry blended using a Henschel mixer. The obtained mixture is supplied to a melt spinning machine (SV30, manufactured by Shinko Machinery Co., Ltd.), and a molten polymer is obtained from a spinneret having a vertical cross section nozzle hole with a barrel setting temperature of 200 ° C. and a flatness ratio of 1.4: 1. The discharged and spun multifilaments were heat-treated for 0.5 to 1 second in a heated spinning cylinder (under an atmosphere of 300 ° C.) provided immediately below the nozzle, and the produced undrawn yarn was sent to the drawing process by a take-up roll. . Immediately before the take-up roll, the oil agent was attached to the undrawn yarn so that the oil agent adhesion amount (pure content) was 0.1 mass% with respect to the mass of the final product (after drawing and heat treatment). The oil agent is attached by installing a ceramic nozzle, and a constant amount of oil solution (manufactured by Matsumoto Yushi Seiyaku Co., Ltd., Wopole U: PO / EO random polyether / silicone softener / Efcoal 72 = 95 / 2.5) with a gear pump. / Mixed at a weight ratio of /2.5) and the undrawn yarn was brought into contact with and adhered to the slit-like opening. Next, the undrawn yarn was drawn to 240% through a hot air circulation tank at 110 ° C. between the take-up roll and the drawing roll. Furthermore, it is led to a heat treatment tank in which hot air of 110 ° C. circulates at a speed of 80 m / min, travels for about 13 seconds through 13 rolls, runs out of the heat treatment tank and runs on the cooling roll, A speed difference of 10% was applied to the cooling roll, and the sample was relaxed and wound on a bobbin to obtain a polyvinyl chloride fiber (multifilament) having a single fiber fineness of around 60 dtex.

(Examples 11-14, Comparative Examples 9-12)
Each component of the blend composition shown in Table 3 is dried to a moisture content of around 500 ppm, then dry blended, and supplied to a twin-screw extruder (manufactured by Nippon Steel Works, TEX44). It was melt-kneaded at 250 ° C. and pelletized. Then, the pellets dried to a moisture content of 800 to 1000 ppm are supplied to a melt spinning machine (SV30, manufactured by Shinko Machinery Co., Ltd.), and a rectangular cross section having a barrel setting temperature of 250 ° C. and an aspect ratio of 1.4: 1 The molten polymer was discharged from a spinneret having nozzle holes, air-cooled with cooling air at 20 ° C., and wound at a speed of 100 m / min to obtain an undrawn yarn. The undrawn yarn was drawn 3.5 times using a heat roll heated to 75 ° C., heat treated with a heat roll heated to 160 ° C., wound up at a speed of 30 m / min, and the single fiber fineness was 60 dtex. Before and after polyamide fibers (multifilament) were obtained.

  KWC-Q which is a hydrophilic fiber treatment agent (random copolymer polyether of ethoxide / propylene oxide; manufactured by Maruhishi Oil Chemical Co., Ltd.) / Processing agent 29 (cationic surfactant) ; Manufactured by Maruhishi Oil Chemical Co., Ltd.) = 0.20 / 0.05% omf, an aqueous solution containing 0.80% of each pure component was prepared, and a tow filament having a total fineness of 100,000 dtex was prepared. The solution was adhered so that the liquid content was 25% based on the tow weight, and dried at 120 ° C. for 10 minutes using a hot air dryer.

(Examples 15-20, Comparative Examples 13-16)
Each component of the blending composition shown in Table 4 was dried to a moisture content of 100 ppm or less, then dry blended, and supplied to a twin-screw extruder (manufactured by Nippon Steel Works, Ltd., TEX44). It was melt-kneaded at 270 ° C. and pelletized. Then, the pellets dried to a moisture content of 100 ppm or less are supplied to a melt spinning machine (SV30, manufactured by Shinko Machinery Co., Ltd.), and a rectangular cross-section nozzle having a barrel set temperature of 270 ° C. and an aspect ratio of 1.4: 1 The molten polymer was discharged from a spinneret having holes, air-cooled with cooling air at 20 ° C., and wound at a speed of 100 m / min to obtain an undrawn yarn. The undrawn yarn was drawn 3.5 times using a heat roll heated to 75 ° C., heat treated with a heat roll heated to 180 ° C., wound up at a speed of 30 m / min, and the single fiber fineness was 60 dtex. Before and after polyester fibers (multifilament) were obtained.

  KWC-Q (Random copolymer polyether of ethoxide / propylene oxide; manufactured by Maruhishi Yuka Co., Ltd.) / Processing agent 29 (Cationic surfactant) ; Marubishi Oil Chemical Co., Ltd.) / Z-type (Toray Dow Corning Co., Ltd.) = 0.20 / 0.05 / 0.10% omf. Prepare an aqueous solution containing 80%, attach the solution to a tow filament with a total fineness of 100,000 dtex so that the liquid content is 25% with respect to the weight of the tow, and dry for 10 minutes at 120 ° C. using a hot air dryer. I let you.

It evaluated by the evaluation method shown below using the fiber obtained in Examples 1-20 and Comparative Examples 1-16.
(Glossy)
A tow filament having a length of 30 cm and a total fineness of 100,000 dtex was visually evaluated according to the following criteria under sunlight.
A: Gloss that cannot be recognized as a difference from human hair even when carefully compared.
○: Gloss that can be judged to be more or less gloss than human hair when carefully compared.
Δ: Gloss that can be judged to have more or less gloss than human hair when compared with normal attention.
X: Gloss that can be judged to be obviously too much or too little gloss than human hair without requiring comparison.

(Color development)
A tow filament having a length of 30 cm and a total fineness of 100,000 dtex was visually evaluated according to the following criteria under sunlight.
◎: Transparency and color depth (brightness) ○: Slightly opaque, but color depth (brightness) is not reduced △: Opaque (cloudy), slightly colored Depth (brightness) is reduced. X: There is an opaque feeling and there is no color depth.

(Feel)
Sensory evaluation was performed in comparison with human hair, and evaluation was performed in four stages.
◎: Very soft texture equivalent to human hair ○: Soft texture similar to human hair △: Slightly hard texture compared to human hair ×: Hard texture compared to human hair

(Comb street)
A fiber surface treatment agent is attached to a tow filament having a length of 30 cm and a total fineness of 100,000 dtex. A comb (made by Delrin resin) was passed through the treated tow filament, and the ease of passing the comb was evaluated.
A: No resistance at all (very light)
○: Almost no resistance (light)
Δ: Some resistance (heavy)
X: There is considerable resistance or it gets caught in the middle.
The evaluation results are shown in Tables 5 to 8.

  As shown in the Examples, it can be seen that all the artificial hairs of the present invention are excellent in glossiness and color developability, and are excellent in tactile feel and combability. On the other hand, it can be seen that none of the artificial hairs shown in the comparative examples outside the scope of the present invention has a glossiness and color developability.

It is a photograph which shows one mode (convex lens-shaped fine particle A) of convex lens-shaped fine particles. It is a photograph which shows one mode (ellipse) of elliptical hemispherical fine particles.

Claims (6)

  Organic fine particles having at least one shape selected from the group consisting of a convex lens shape, an elliptical sphere shape, an elliptical hemispherical shape, a rugby ball shape, a cigar shape, a cylindrical shape, and a semicylindrical shape with respect to 100 parts by mass of the thermoplastic resin (A). (B) Artificial hair containing 0.5 to 5.0 parts by mass.   The artificial hair according to claim 1, wherein the thermoplastic resin (A) is at least one resin selected from the group consisting of polyolefin resins, polyvinyl chloride resins, polyamide resins, and polyester resins.   The artificial hair according to claim 1, wherein a major axis of 60% or more of the organic fine particles (B) is oriented parallel to a fiber axis of the artificial hair.   The average particle diameter of the organic fine particles (B) is 1 to 10 µm, and the ratio of the major axis to the minor axis is major axis / minor axis = 1.2 / 1 to 5/1. The artificial hair described.   A headdress product obtained by processing the artificial hair according to any one of claims 1 to 4.   The headdress product according to claim 5, wherein the headdress product is a weaving, wig, two-pee, hair extension or hair accessory.