JP3061396B2 - Wig base material - Google Patents

Description

The present invention relates to a wig substrate using a moisture-permeable deodorant film.

[Problems to be Solved by Conventional Techniques and Inventions] Conventionally, a base material for a wig is formed by pasting a cloth such as a nylon knit cloth on an outer surface of a mold formed into a head shape with gypsum or the like, and further applying a soft film from above. It was made by sticking. Wigs have been manufactured by implanting human hair or artificial hair into the wig base. The wig base must have a thick film thickness of about 300μm to withstand the strength of the flocking. Therefore, the wig has poor moisture permeability, does not emit sweat when the wig is worn, and causes “unevenness”. It also caused microbial growth and odor.

The wig base material worn on the head for a long time has an environment in which microorganisms are easily propagated due to sweat and skin waste, thereby causing odor, rash, and eczema.

Therefore, an object of the present invention is to provide a wig base material that suppresses the growth of microorganisms, prevents the generation of offensive odor, has appropriate moisture permeability, and has mechanical strength that can withstand flocking. .

[Means for solving the problem]

The present inventors have intensively studied a material having sufficient moisture permeability and moderate mechanical strength, suppressing the growth of microorganisms and the generation of offensive odor, and having high safety to the human body. As a result, they have found that by including an antibacterial inorganic substance in the polyamino acid urethane copolymer film, it is possible to satisfy all of moisture permeability, mechanical strength, antibacterial property, deodorant property and safety to human body. Was completed.

That is, despite the fact that the polyamino acid urethane copolymer film containing the antibacterial inorganic substance used for the wig substrate of the present invention forms a nonporous film having mechanical strength,
Has the same moisture permeability as conventionally known porous membranes,
Further, antibacterial and deodorant properties are imparted by the contained antibacterial inorganic powder.

 Hereinafter, the present invention will be described.

In the present invention, "antibacterial inorganic powder" as a solid,
A powder in which a liquid or gaseous antibacterial agent is supported on an inorganic carrier can be exemplified. Examples of the inorganic carrier include crystalline aluminosilicate (hereinafter referred to as zeolite), amorphous aluminosilicate (hereinafter referred to as AAS), hydrated oxides such as hydrous titanium oxide, intercalation compounds such as silica gel, barium titanate, activated alumina, and silica. Examples thereof include soil, activated carbon, and the like, and it is preferable to use any one of zeolite, AAS, and a hydrous oxide of hydrous titanium oxide having high affinity with an antibacterial drug and high chemical stability.

The antibacterial agent used in producing the antibacterial inorganic powder in the present invention may be in any of solid, liquid and gaseous forms. For example, ions of metals such as silver, copper, zinc, water, lead, tin, bismuth, cadmium, and thallium, compounds thereof, halogenated compounds such as stabilized chlorine, hypochlorite, chloramine, and ethylene iodide, and alcohols. Phenols, ethers, guanidines, thiazoles, quaternary ammonium salts, thiocarbamates and the like. However, it is preferable to use a powder of a hydrated oxide such as zeolite, AAS, or hydrated titanium oxide containing silver because of its strong antibacterial activity, durability, and excellent safety for the human body. The content of silver contained in the antibacterial inorganic powder is preferably 1 to 30% by weight from the viewpoint of sustaining antibacterial activity.

One embodiment of the present invention is a wig substrate obtained by processing a polyamino acid urethane copolymer film containing a silver-containing inorganic powder into a base fabric and forming a layer.

In the present invention, as the “zeolite”, both natural zeolites and synthetic zeolites can be used. Zeolite is generally an aluminosilicate having a three-dimensional skeleton structure, and has a general formula of XM _{2 / n} O.Al ₂ O _3.
Displayed as YSiO ₂ · ZH ₂ O. Here, M represents an ion-exchangeable ion and is usually a monovalent or divalent metal ion.
n is the valence of the (metal) ion. X and Y indicate the respective metal oxides and silica coefficients, and Z indicates the number of water of crystallization. Specific examples of the zeolite include, for example, A-type zeolite, X-type zeolite, Y-type zeolite, and T-type zeolite.
Type zeolites, high silica zeolites, sortalite, mordenite, analcyme, clinoptilolite, chabazite, erionite and the like. However, it is not limited to these. The ion exchange capacity of these exemplary zeolites was 7 meq / g of A-type zeolite, X
-Type zeolite 6.4 meq / g, Y-type zeolite 5 meq / g,
T-type zeolite 3.4 meq / g, sodalite 11.5 meq / g
g, mordenite 2.6 meq / g, analcyme 5 meq / g, clinoptilolite 2.6 meq / g, chabazite 5 meq / g, erionite 3.8 meq / g, all of which are sufficient for ion exchange with silver ions have.

The antibacterial zeolite used in the present invention is ion-exchangeable ions in the zeolite, for example, sodium ions, calcium ions, potassium ions, magnesium ions, part or all of the iron ions and the like are silver ions, preferably ammonium ions and It has been replaced with silver ions.

From the viewpoint of antibacterial properties, silver ions are contained in zeolite in an amount of 1 to 30.
%. Further, discoloration of the antibacterial zeolite can be effectively prevented by further ion-exchanging the antibacterial zeolite with ammonium ions by 0.5 to 5%. In addition, in this specification,% means 110% of dry weight%.

Hereinafter, a method for producing the antibacterial zeolite used in the present invention will be described. For example, the antimicrobial zeolite used in the present invention is brought into contact with a previously prepared mixed aqueous solution containing a silver ion and an ammonium ion to replace the ion-exchangeable ion in the zeolite with the ion. The contact can be performed at 10 to 70 ° C, preferably 40 to 60 ° C, for 3 to 24 hours, preferably 10 to 24 hours by a batch system or a continuous system (for example, a column method). The pH of the mixed aqueous solution is suitably adjusted to 3 to 10, preferably 5 to 7. This adjustment is preferable because precipitation of silver oxide or the like on the zeolite surface or in pores can be prevented. or,
Each ion in the mixed aqueous solution is usually supplied as a salt. For example, silver ion is silver nitrate, silver sulfate, silver perchlorate, silver acetate, diamine silver nitrate, diammine silver sulfate, etc., and ammonium ion is ammonium nitrate, ammonium sulfate, ammonium acetate, ammonium perchlorate, ammonium thiosulfate, ammonium phosphate. Etc. can be used.

The content of silver ions and the like in the zeolite can be appropriately controlled by adjusting the concentration of each ion (salt) in the mixed solution. For example, if the silver ion concentration is 0.02M / ~
4.8M /, ammonium ion concentration 0.2M / ~ 2.5M /
By appropriately setting the silver ion content to 1 to 30%,
An antimicrobial zeolite having an ammonium ion content of 0.5 to 5% can be obtained.

In the present invention, ion exchange can also be performed by using an aqueous solution containing each ion alone in addition to the mixed aqueous solution as described above and sequentially contacting each aqueous solution with zeolite. The concentration of each ion in each aqueous solution can be determined according to each ion concentration in the mixed aqueous solution.

The zeolite after the ion exchange is thoroughly washed with water and then dried. Drying is preferably performed at 105 ° C. to 115 ° C. under normal pressure, or at 70 ° C. to 90 ° C. under reduced pressure (1 to 30 torr).

In the present invention, an antibacterial amorphous aluminosilicate obtained by substituting some or all of the ion-exchangeable ions in the amorphous aluminosilicate with silver ions can be used as the antibacterial inorganic powder. As a method for producing an amorphous aluminosilicate, for example, JP-A-53-30500, JP-A-61-30
There is a method described in -174111 or the like. The method for producing the antibacterial amorphous aluminosilicate can be carried out in accordance with the method for producing the antibacterial zeolite. Further, hydrated oxides such as hydrated titanium oxide, hydrated zirconium, hydrated tin, hydrated antimony, hydrated bismuth, and hydrated lead oxide can be similarly prepared as antibacterial inorganic substances by ion-exchanging silver ions and ammonium ions.

Furthermore, the particle size of the antibacterial inorganic powder is not particularly limited,
From the viewpoint of obtaining an antibacterial material with a smaller amount of powder,
Preferably, the particle size is relatively small. The particle size of the powder can be, for example, 0.04 to 20 μm, preferably 0.5 to 5 μm.

"Polyamino acid urethane copolymer" used in the present invention
Is a copolymer comprising an amino acid and a polyurethane, and is synthesized by reacting an amine acid with a terminal isocyanate group of a urethane prepolymer by adding an amine.
The synthesis method is described, for example, in JP-A-59-140217 and JP-A-59-140219.
Nos. 59-179512, 61-40336 and 61-40315
No. etc. Amino acids include alanine, aspartic acid, cystine, glutamic acid, glycine, lysine, methionine, leucine and derivatives thereof, and when synthesizing a polyamino acid, an amino acid N-carboxylic anhydride obtained from the amino acid and phosgene Is generally used. Polyurethane is a urethane prepolymer having an isocyanate group at the end, and is obtained by reacting isocyanate (NCO) under conditions more than polyol (OH). As the isocyanate, an aromatic diisocyanate, an aliphatic diisocyanate, or an alicyclic diisocyanate alone or in combination is used. For example, toluene 2,4-diisocyanate, 4,4'-diphenylmethane diisocyanate, 1,6-hexane diisocyanate,
Examples thereof include 1,4-cyclohexane diisocyanate. As the polyol, a polyether polyol, a polyester polyol, or the like is used. Polyester polyols such as polyethylene glycol, polypropylene glycol, polytetramethylene glycol, and polyester polyols include reaction products of diols such as ethylene glycol and propylene glycol with dibasic acids such as adipic acid and sebacic acid, and caprolactone. Ring-opening polymers can be mentioned. Amines used in the copolymerization of an amino acid and a polyurethane include hydrazine, ethylenediamine, diethylamine, diethylenetriamine, diethylaminopropylamine, m-
Examples include phenylenediamine, dicyanamide, triethylamine, and ethanolamine.

In the present invention, the urethane copolymer film polyamino acid is preferably moisture permeability is ^{4000g / m 2/40 ℃ /} 24hr or higher.

Hereinafter, the method for producing the polyamino acid urethane copolymer film used in the present invention will be described. A urethane prepolymer having a terminal isocyanate group obtained by a reaction between an isocyanate and a polyol is dissolved in a solvent, and an amino acid is added thereto to completely dissolve the prepolymer. Further, amines are added and a polyamino acid urethane copolymer solution is obtained by a polymerization reaction. The above-mentioned antibacterial inorganic powder and a solvent are added thereto and mixed well, and the viscosity at 20 ° C. is adjusted to, for example, 80 to 200 poise.

In preparing the copolymer-containing solution, it is preferable to perform sufficient mixing to improve the dispersibility of the antibacterial inorganic powder. As a mixing method, various mixers can be used, for example, a Banbury mixer having a high shear dispersion force,
A two-roll mill, a kneader or a three-roll mill having a low shear dispersion force, a colloid mill, a mixer, a disper, a homomixer, a sand mill, a hole mill, and the like can also be used. As an index for evaluating whether or not the mixing has been properly performed, there is a measurement of the particle size of the powder in the resin liquid using a grind gauge, and the particle size is preferably 20 μm or less.

Further, the copolymer-containing solution may contain a crosslinking agent, an oil, a wax, a filler, a preservative, a coloring agent, a stabilizer, a cell conditioner (surfactant), and the like, if necessary.

In the present invention, the mixing ratio of the antibacterial inorganic powder to the polyamino acid urethane copolymer is such that the copolymer solid content is 10%.
The amount of the antibacterial inorganic powder relative to 0 parts by weight is 0.1 to 30 parts by weight, preferably 1 to 10 parts by weight, from the viewpoint of exhibiting high antibacterial activity.

The copolymer-containing solution is, for example, 20 to 150 μm on release paper.
m and dried at 70 to 150 ° C. to form a resin. The coating amount of the resin solution is 5 to 600 g
/ m ² , preferably 10 to 400 g / m ² , from the viewpoint of the stability of antibacterial activity. The method of coating on the release paper is not particularly limited, and any method can be used as long as it does not cause decomposition or dissolution of the antibacterial inorganic powder or the like. For example, spray coating (spraying),
Knife coating (blade coating), gravure coating, roll coating, impregnated coating and the like can be mentioned. Also, after the above film is resinified,
Further, the film can be stretched 2 to 15 times by a stretching machine while being heated to 80 to 180 ° C.

In the present invention, the material used as the base fabric of the wig base material, by the manufacturing method step in the method of the present invention,
There is no particular limitation on the type, shape, and the like as long as they do not deteriorate. For example, natural fibers such as cotton, wool, silk, and hemp; cellulose fibers such as rayon and cupra; polyamide fibers such as nylon 6, nylon 66; polyester fibers such as polyethylene terephthalate fiber; and polyacrylonitrile fibers. Such as acrylic fiber, water insolubilized polyvinyl alcohol fiber, cellulose acetate fiber, natural leather, synthetic leather,
A woven fabric, a knitted fabric, a nonwoven fabric, a composite thereof, or the like made of at least one fiber selected from rubber and the like can be used. Of these, a knitted fabric made of polyamide, acrylic, or polyurethane fibers is preferable because it has mechanical strength and elasticity and has excellent properties as a base material for a wig. Examples of a method of applying the film layer to the base fabric include a method of laminating by heat, a method of applying a resin layer after applying an adhesive, and the like.

〔The invention's effect〕

According to the present invention, a wig base material having mechanical strength enough to withstand flocking even if thinner than the conventional resin layer thickness, having moisture permeability, antibacterial properties, deodorant properties, and excellent safety for the human body Can be provided.

〔Example〕

 Hereinafter, the present invention will be described in more detail with reference to Examples.

Reference Example 1 (Preparation of antibacterial aluminosilicate) Commercially available A-type zeolite powder (N
a ₂ O ・ Al ₂ O ₃・ 1.9 SiO ₂・ xH ₂ O: average particle size 1.5 μm), mordenite powder made of Sinanen New Ceramics (Na ₂ O ・ Al ₂ O
_{3 · 9.7 SiO 2 · xH 2} O: average particle size 2.0 .mu.m), and JP 61
Amorphous aluminosilicate powder synthesized according to -174111 (0.9 Na ₂ O.Al ₂ O ₃ .2.4 SiO ₂ .xH ₂ O: average particle size 0.9 μm
m) was added with water to make a slurry of 1.3, then stirred and degassed, and an appropriate amount of 0.5N nitric acid solution and water were added.
The pH was adjusted to 5-7 and the total volume was a 1.8 slurry.
Next, for ion exchange, a mixed aqueous solution containing antibacterial metal ions was added to make the total volume 4.8, and this slurry solution was 40 to 60
C. and maintained for 24 hours with stirring to reach an equilibrium state. Each solution of silver nitrate, zinc nitrate, and ammonium nitrate was used as a solution for ion exchange. After the completion of the ion exchange, the aluminosilicate phase was filtered and washed with warm water until excess silver, zinc, ammonium ions and the like in the aluminosilicate phase disappeared. Next, the sample was dried by heating at 110 ° C. to obtain an antibacterial aluminosilicate powder sample. Table 1 shows the data of the obtained samples.

Reference Example 2 (Preparation of Antibacterial Titanium Oxide) A commercially available titanium oxide (IXE-400 manufactured by Toa Gosei Chemical Industry Co., Ltd.) jet-type ultrafine pulverizer was used to adjust the particle size to 5 to 15 μm. Fine particles
To 1 kg, a mixed aqueous solution 2 containing silver, zinc, and ammonium ions used in Reference Example 1 was added, and the mixture was stirred at room temperature for 48 hours, filtered, and washed with hot water until excess silver, zinc, ammonium ions, etc. disappeared. Next, the sample was dried by heating at 110 ° C. to obtain an antibacterial titanium oxide powder sample. Table 1 shows the data of the obtained samples.

Examples 1 to 11 and Comparative Examples 1 and 2 (Production of base material for film and wig) 1300 g of polyethylene glycol and 420 g of 1,6-hexamethylene diisocyanate were reacted at 90 ° C. for 4 hours to obtain a urethane polymer. 100 g of the urethane prepolymer, 1 to 15 g of the antibacterial inorganic powder prepared in Reference Examples 1 and 2, and 90 g of methyl aspartate dissolved in 650 g of dioxane were added.
Further, 50 g of a 2% triethylamine solution was added little by little to 3
The reaction was carried out at 0 ° C. for 7 hours to obtain a polyamino acid urethane copolymer.

Apply the above polyamino acid urethane resin liquid on release paper to a film thickness of 50
μm was applied with a knife coater and heat-treated at 60 ° C. for 2 minutes to obtain a moisture-permeable deodorant film of the present invention.

Next, a 20-gauge plain woven knitted fabric using a yarn made of 40 deniers and 25 acrylic fibers was laminated on the film and dried at 120 ° C. for 2 minutes. After sticking this to a head-shaped mold to eliminate wrinkles, heat at 150 ° C for 8 minutes,
The wig was removed from the cooling mold to obtain a wig substrate of the present invention. As a comparative example, a conventional wig base material coated with an acrylic latex (Comparative Example 1) and a wig base material not using antibacterial inorganic powder (Comparative Example 2) were also prepared. Table 2 shows the manufacturing conditions.

Test Example 1 (Moisture Permeability Test) A part of the wig base material obtained in Examples 1 to 11 and Comparative Examples 1 and 2 was cut out and subjected to a moisture permeability test (JIS Z-208 method). Table 2 shows the results.

Test Example 2 (Antibacterial property test) a portion of the wig base obtained in Examples 1 to 11 and Comparative Examples 1 and 2 was cut into 5 × 5 cm, this E. coli and S. epidermidis (10 ⁵ cells / ml) Was sprinkled with 0.5 ml and cultured at 37 ° C. for 18 hours. The bacterial solution was washed with sterilized physiological saline, and the number of Escherichia coli present in this solution was measured to evaluate antibacterial activity. Table 2 shows the results.

Test Example 3 (Odor control test) The wig base material obtained in Test Examples 1 to 11 and Comparative Examples 1 and 2 was used.
A deodorization test was carried out by attaching to 12 testers respectively. Wearing was carried out for 8 hours a day for 10 days, and the odor on the 5th and 10th days was evaluated by the sensory method according to the following criteria, and the average value was calculated. Table 2 shows the results.

(Evaluation) 0: No smell at all 1: Odor occurs when careful 2: Smell a little 3: Smell 4: Smell strongly 5: Smell very strongly

────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI C08L 75/12 C08L 75/12 (56) References JP-A-63-105055 (JP, A) JP-A-63-56538 (JP) JP-A-62-77922 (JP, A) JP-A-1-313150 (JP, A) JP-A-64-6031 (JP, A) JP-A-63-154746 (JP, A) 61-142819 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A41G 3/00 C08L 75/12 C08K 3/34 C08J 5/18 B32B 27/12 B32B 27/18

Claims (2)

(57) [Claims] Claims: 1. A base fabric having a layer made of a moisture-permeable deodorant film made of a polyamino acid urethane copolymer containing an antibacterial inorganic powder on a part or all of one or both surfaces of the base fabric,
And a base for a wig, wherein the antibacterial inorganic powder is zeolite, amorphous aluminosilicate or hydrous titanium oxide containing an antibacterial agent. 2. The substrate according to claim 1, wherein the antibacterial inorganic powder is zeolite obtained by ion-exchange of silver, amorphous aluminosilicate, or hydrous titanium oxide.