JP2010150715A - Artificial hair, and hair ornament product including the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide artificial hair suppressed in luster and further closely resembling human hair in sense of touch, and to provide a hair ornament product including the artificial hair. <P>SOLUTION: The artificial hair is obtained by using and fiberizing a resin composition containing 0.5-5.0 pts.mass of red corpuscle-shaped minute particles in 100 pts.mass of thermoplastic resin. The hair ornament product includes the artificial hair. The artificial hair is suppressed in luster and closely resembles human hair in sense of touch. <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, weave, wig, two-pee, hair extension, or hair accessory that suppresses gloss, which is a drawback of artificial hair, and has a touch that is similar to human hair. The present invention relates to artificial hair suitably used as a headdress product such as a headdress product and a headdress product made thereof.

  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 Literature). 1). These techniques are techniques for forming protrusions on the fiber surface with fine particles, and in order to form fine dents on the surface of the fiber for artificial hair, it is necessary to perform an alkali weight loss treatment, which complicates the process. There were problems such as increasing costs and costs. In addition, when organic or inorganic particles are used, it is possible to suppress the gloss by increasing the amount of addition, but the color developability (hue) is reduced, and the feeling of touch that is far from human hair is prone. As a result, artificial hair having gloss and feel similar to human hair was not obtained.
JP 2005-42234 A

  An object of the present invention is to provide artificial hair that suppresses gloss in artificial hair and has a tactile sensation similar to that of human hair, and a headdress product comprising the same.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have included erythrocyte-shaped fine particles (biconcave disk-shaped fine particles) in a specific ratio and dispersed them at a specific particle diameter, thereby making artificial It has been found that by forming irregularities on the surface of the hair, the gloss can be suppressed and a soft tactile sensation similar to human hair can be realized, and the present invention has been completed.

  That is, the present invention is characterized by comprising artificial hair containing 0.5 to 5.0 parts by mass of red blood cell shaped fine particles (B) with respect to 100 parts by mass of the thermoplastic resin (A). 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, and the red blood cell-shaped microparticles (B) The crosslinked acrylic resin particles are preferable from the viewpoint of suppressing the gloss of artificial hair and obtaining a soft touch similar to human hair. In order to obtain a higher effect, it is preferable that the average particle size of the erythrocyte-shaped fine particles (B) is 1 to 10 μm.

  According to the present invention, it is possible to provide artificial hair that suppresses glossiness and has a soft tactile sensation similar to human hair.

  The present invention will be specifically described below. The artificial hair of the present invention is an artificial hair containing 0.5 to 5.0 parts by mass of red blood cell-shaped fine particles (biconcave disk-shaped 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 erythrocyte-shaped fine particles (B) used in the present invention are fine particles having a shape in which the central portion of the disk is recessed as shown in FIG. 1, and preferably crosslinked acrylic resin particles are used.

  When cross-linked acrylic resin particles are used as the erythrocyte-shaped fine particles (B), the composition thereof includes aromatic vinyl monomers such as styrene and α-methylstyrene, methyl (meth) acrylate, and ethyl (meth) acrylate. , (Meth) acrylate monomers such as butyl (meth) acrylate, homopolymers of vinyl acetate, or other copolymerizable monomers, or their blocks, ramdams, and graft copolymers. .

  The red blood cell-shaped fine particles are preferably made of an organic resin having excellent transparency, and it is preferable that the red blood cell-shaped fine particles are made of a crosslinked acrylic resin from the viewpoint that transparency and red blood cell-shaped fine particles are easily obtained. The method for producing seed particles is not particularly limited, and methods such as emulsion polymerization, soap-free emulsion polymerization or suspension polymerization can be used. In consideration of the uniformity of the seed particle size and the simplicity of the production method, emulsion polymerization and soap-free emulsion polymerization are preferred.

  The weight average molecular weight of the red blood cell type microparticles used in the present invention is in the range of 5,000 to 150,000, preferably 10,000 to 80,000, more preferably 15, as measured by gel permeation chromatography. 000 to 50,000. The weight average molecular weight of the seed particles can be adjusted to this range by adjusting the amount of the polymerization initiator used or adding a molecular weight regulator. As the molecular weight modifier, mercaptans such as n-octyl mercaptan and t-dodecyl mercaptan, and halogenated hydrocarbons such as carbon tetrachloride can be used. The weight average molecular weight of the seed particles can also be adjusted by adjusting the addition amount of these molecular modifiers.

  If the weight average molecular weight of the erythrocyte-shaped fine particles is in the range of 5,000 to 150,000, the deformed fine particles obtained have the shape of the present invention (the average diameter of the disc is 1 to 10 μm, The average thickness of the non-part) is 0.3 to 4 μm, the average diameter of the concave portion of the disc is 0.4 to 6 μm, and the average thickness of the concave portion of the disc is 0.1 to 2 μm. The strength of the irregularly shaped fine particles finally obtained can also be obtained. In other words, if the weight average molecular weight of the seed particles becomes too large, the monomer particles have a smaller ability to absorb the monomer, and the monomer in the monomer mixture is polymerized independently without being absorbed by the seed particles. It seems that spherical fine particles different from the above are produced.

  Examples of the (meth) acrylic acid ester monomer used in the present invention include methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, and the like. The glass transition temperature of the polymer obtained as flat irregular fine particles is preferably 50 ° C. or higher, more preferably 70 ° C. or higher, in order to avoid adverse effects such as bonding and coalescence when handled as powder. For that purpose, methyl (meth) acrylate is preferable, and it is preferable that about 50 to 97% by weight of methyl (meth) acrylate is contained in the monomer mixture.

  The other monomer, which is a crosslinkable vinyl monomer, includes, for example, many poly vinyl groups having two or more polymerizable vinyl groups in one molecule, such as divinylbenzene, ethylene glycol dimethacrylate, and trimethylolpropane trimethacrylate. Functional monomers are used. The amount of the crosslinkable vinyl monomer used in the present invention is adjusted to 3 to 15% by weight based on the total amount of the monomer mixture.

  If the ratio of the crosslinkable vinyl monomer is in the range of 3 to 15% by mass, the average thickness of the shape of the present invention (the average diameter of the disc is 1 to 10 μm, the disc (the portion that is not a recess near the circumference)) Is 0.3 to 4 μm, the average diameter of the concave portions of the disc is 0.4 to 6 μm, and the average thickness of the concave portions of the disc is 0.1 to 2 μm.

  Examples of such monomers include aromatic vinyl compounds such as styrene and α-methylstyrene, vinyl acetate, acrylonitrile, (meth) acrylic acid, (meth) acrylamide, 2-hydroxyethyl (meth) acrylate, and glycidyl (meth) acrylate. Etc. The amount of the monomer mixture used in the present invention is preferably 3 to 30 parts by weight, more preferably 5 to 25 parts by weight, and particularly preferably 7 to 19 parts by weight with respect to 1 part by weight of the seed particles. It is.

  The method for adding the monomer mixture to the seed particles is not particularly limited, and the monomer can be absorbed by the seed particles at one time, divided or continuously. In the present invention, a water-soluble radical initiator is used as the water-soluble polymerization initiator. Examples of the water-soluble radical initiator include persulfates such as potassium persulfate, ammonium persulfate and sodium persulfate, organic peroxides such as benzoyl hydroperoxide, 4,4′-azobis (4-cyanopentanoic acid) And redox initiators such as potassium persulfate-sodium thiosulfate and hydrogen peroxide-ascorbic acid.

  If an oil-soluble polymerization initiator such as benzoyl peroxide or azoisobisbutyronitrile is used in the method of the present invention, the desired flat irregular fine particles cannot be obtained. The polymerization temperature is preferably 65 ° C to 90 ° C, more preferably 70 ° C to 80 ° C. When the polymerization temperature is in the range of 65 to 90 ° C., the polymerization proceeds smoothly and stably, and the fine particles of the present invention are formed.

  In the polymerization, a surfactant may be used, and preferred surfactants include anionic surfactants such as sodium alkylbenzene sulfonate, sodium alkyl sulfonate, sodium dialkyl sulfosuccinate, polyoxyethylene alkyl ether, polyoxyethylene. Nonionic surfactants such as alkylphenyl ethers can be mentioned, and these surfactants can be used alone or in combination of two or more. When these surfactants are used, the amount used is preferably less than the critical micelle concentration and as small as possible.

  In the method of the present invention, a dispersion stabilizer may be used, and preferable dispersion stabilizers include water-soluble polymers such as polyvinyl alcohol, hydroxyethyl cellulose, and carboxymethyl cellulose.

  The particle size of the erythrocyte-shaped fine particles (B) is 1-10 μm as the average diameter of the disc and the diameter of the disk-shaped part, and 1-10 μm, more preferably 1.5-8 μm, especially the number average particle size. 2 to 6 μm is preferable. The average thickness of the disc (the portion that is not a recess near the circumference) is 0.3 to 4 μm, more preferably 0.4 to 3.5 μm, and particularly preferably 0.5 to 3 μm. The average diameter of 0.4 to 6 μm, more preferably 0.6 to 5 μm, particularly preferably 0.8 to 4 μm, and the average thickness of the concave portions of the disk is 0.1 to 2 μm. The thickness is preferably 0.15 to 1.8 μm, particularly preferably 0.2 to 1.7 μm. When the shape of the erythrocyte-shaped fine particles is within the above range, preferable irregularities that are effective in suppressing gloss are formed on the fiber surface, exhibiting gloss that approximates human hair, and the irregularities formed on the fiber surface are large. There is a tendency for the feeling of touch and the combing to decrease.

  The blending ratio of the thermoplastic resin (A) and the red blood cell shaped fine particles (B) is 0.5 to 5.0 parts by weight of the red blood cell shaped fine particles (B) with respect to 100 parts by weight of the thermoplastic resin (A). Furthermore, it is preferable that it is 0.7-4.5 mass parts, especially 1.0-4 mass parts. When the blending ratio is in the range of 0.5 to 5.0 parts by mass, the gloss adjusting effect is sufficiently exhibited, and the transparency and color developability of the fiber are maintained.

  The artificial hair obtained by the present invention contains red blood cell-shaped fine particles, and is dispersed in a thermoplastic resin, thereby forming fine irregularities on the fiber surface of the artificial hair, approximating natural luster and human hair. Have a tactile feel.

  When erythrocyte-type fine particles are contained in a thermoplastic resin and melt-kneaded, the erythrocyte-shaped fine particles are mixed randomly, but on the fiber surface, smooth protrusions (convex shapes) or dents (from the shape of the particles) (Concave shape) is formed, and natural luster is obtained by the unevenness. In addition, it is possible to obtain luster close to human hair with only convex shapes, but for that purpose, it is necessary to form many protrusions (convex shapes), causing a decrease in touch and combing. In addition to the convex shape, even the concave shape exhibits the effect of suppressing gloss (light scattering), and even if irregularities are formed until a natural glossiness is obtained, the desired artificial hair can be obtained without deteriorating the tactile sensation and combing. It is done.

  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. When the content is in the range of 3 to 30 parts by mass, the flame retardant effect is sufficiently expressed, the hair setting property of the artificial hair is maintained, and the drip resistance at the time of flame contact is also maintained. 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 dye on the same conditions as a normal polyester fiber. Moreover, in the case of original attachment, an original attachment fiber can be obtained by melt-kneading the pigment used for 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 non-spherical 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 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, on the fiber surface, the major axis of the non-spherical fine particles is oriented parallel to the fiber axis direction, and protrusions are formed. It can be suitably used as artificial 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: Made by Kaneka Co., Ltd., trade name: Kane Ace PA101
Erythrocyte-shaped fine particles: manufactured by Soken Chemical Co., Ltd., trade name: HK-1030, disk average diameter 3.0 μm, disk average thickness 1.4 μm, recess average diameter 1.6 μm, recess average thickness 0 .6 μm
Cross-linked acrylic particles: manufactured by Soken Chemical Co., Ltd., trade name: MX-180TA, average particle size 1.8 μm
Silica: manufactured by Tosoh Silica Co., Ltd., trade name: NIPGEL AZ-200, average particle size 3.5 μm
Phosphorus flame retardant: Sanko Co., Ltd., trade name: SANKO-BCA
Brominated flame retardant: Sakamoto Pharmaceutical Co., Ltd., trade name: SR-T20000
In addition, it evaluated by the evaluation method shown below using the fiber obtained in Examples 1-14 and Comparative Examples 1-10.

(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.

(Examples 1-5, Comparative Examples 1-4)
Each component of the blending composition shown in Table 1 is 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, 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. The evaluation results are shown in Table 1.

(Examples 6-8, Comparative Examples 5-6)
Each component of the blending composition shown in Table 2 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. The evaluation results are shown in Table 2.

(Examples 9-11, Comparative Examples 7-8)
Each component of the blending composition having the blending ratio shown in Table 3 was dry blended, supplied to a twin-screw extruder (manufactured by Nippon Steel Works, 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. The evaluation results are shown in Table 3.

(Examples 12-14, Comparative Examples 9-10)
Each component of the blend composition having the blend ratio shown in Table 4 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. The evaluation results are shown in Table 4.

  As shown in the examples, it can be seen that the artificial hair of the present invention is excellent in glossiness and touch feeling. 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 gloss and tactile feel.

It is a photograph which shows one aspect | mode of the red blood cell form microparticles | fine-particles of this invention.

Claims (6)

  Artificial hair containing 0.5 to 5.0 parts by mass of red blood cell-shaped fine particles (B) with respect to 100 parts by mass of the thermoplastic resin (A).   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 the red blood cell shaped fine particles (B) are crosslinked acrylic resin particles.   The average diameter of the erythrocyte-shaped microparticle (B) disc is 1 to 10 μm, the average thickness of the disc (the non-recessed portion near the circumference) is 0.3 to 4 μm, and the average diameter of the concave portion of the disc is 0.4. The artificial hair according to claim 1 or 3, wherein the average thickness of the concave portions of the disk is 0.1 to 2 µm.   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.