JP2582738B2 - Fiber structure having forest bathing effect and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fibrous structure having a forest bathing effect, and more particularly, to a woven or knitted fabric, a woven or knitted fabric having a durable forest bathing effect by attaching microcapsules enclosing phytoncide to a woven or knitted fabric or the like. The present invention relates to the manufacturing method.

[0002]

2. Description of the Related Art Hitherto, various developments have been made on fiber structures such as clothing having a forest bathing effect, and many of them have been marketed. However, many of these are simply sprayed with phytoncide on the final product at the time of finishing, or applied together with a binder or a sizing agent (JP-A-64-5).
No. 2886) and the like in an open-to-atmosphere system.

[0003]

However, it goes without saying that the garments obtained as described above have poor durability in the forest bathing effect, and the forest bathing effect is completely lost by a single washing. , The product value was extremely low. Furthermore, the phytoncide evaporates immediately due to contact with the outside air during wearing, and the forest bathing effect can be maintained for only a few hours after wearing.

[0004] Then, even if an attempt is made to attach phytoncide hardened with resin to clothes or the like for the purpose of obtaining a durable forest bathing effect, it is still not possible to continuously emit phytoncide. On the contrary, the drawback that the texture of clothes and the like tend to be hard and stiff is conspicuous.

[0005] In view of the above situation, the present inventors have
As a result of intensive studies with the aim of obtaining a fiber structure having a durable forest bathing effect and a good feeling, the use of microcapsules containing phytoncide has a forest bathing effect of the fiber structure The knowledge that it is suitable for processing was obtained.

Various production methods have been conventionally developed for the microcapsules, and a representative one is described in Japanese Patent Publication No. 37-7724.

[0007] Various applications of microcapsules to fibers have been proposed in Japanese Patent Application Laid-Open No. 49-19197.

[0008] However, the present invention is intended to provide a sustained forest bathing effect by attaching phytoncide to a fibrous structure in a closed system in which phytoncide is encapsulated in microcapsules, that is, gradually by the stress applied by friction during wearing. It focuses on the fact that the microcapsules are broken and converted into an open system, and a continuous diverging effect is exhibited.

[0009] That is, an object of the present invention is to provide a fiber structure having a forest bathing effect capable of satisfying the sustainability of the forest bathing effect by divergence of preferable phytoncide without impairing the feeling of the fiber structure. It is another object of the present invention to provide a method for industrially easily and inexpensively producing a fiber structure having such a forest bathing effect.

[0010]

In order to achieve the above object, the present invention has the following arrangement. That is, the first invention is a gist of a fibrous structure having a forest bathing effect in which phytoncide-encapsulated microcapsules are fixed to a fibrous structure by a resin binder, and the second invention provides at least a part of the fibrous structure with After applying a treatment liquid comprising a phytoncide-encapsulated microcapsule and a resin binder, the fiber structure is dried at a temperature of less than 150 ° C. to fix the microcapsule on the fiber surface. A summary of the manufacturing method.

Hereinafter, the present invention will be described in detail.

The term "fiber structure" as used in the present invention refers to a thread, a string, a woven fabric, a knitted fabric, a nonwoven fabric, a standing blanket, a leather, a fur, and a secondary product thereof, for example, a coat, a kimono suit, a uniform, a sweater, and a skirt. , Slacks, cardigan,
Outer garments such as sportswear, dress shirts, casual wear, pajamas, shorts, lingerie, foundations, underwears such as hojerie, stockings, socks such as socks, footwear such as slippers, futon side, sheets, futon covers, blankets. Bedding, gloves, ties, scarves, shawls, small items such as wiping glasses, curtains, etc.
Includes carpets, wall upholstery, chair upholstery, upholstery, automotive interior materials, etc.

The constituent fibers are natural fibers, regenerated fibers, synthetic fibers, or blends, composite yarns,
Any of mixed yarns such as a mixed fiber may be used.

The composition of the phytoncide-encapsulated microcapsules used in the present invention is not particularly limited as long as the phytoncide is ruptured by appropriate friction and emits phytoncide, and the microencapsulation method itself is known. From the viewpoints of sustained release of phytontide and mechanical strength of the microcapsules, the wall material is preferably an organic polymer, and examples thereof include polyurethane, urea-formalin resin, and cyclodextrin, but are not limited thereto. However, the wall material is preferably made of urea-formalin or melamine-formalin resin, and particularly preferably low formalin microcapsules.

The size of the microcapsules is usually from 1 to 50 μm, preferably from 5 to 20 μm in average particle size, and particularly preferably those in which most of the particle size distribution is in the range from 5 to 20 μm. And when the wall material is a urea-formalin resin, the particle diameter is about 2 to 50 μm, preferably about 5 to 20 μm, and the wall thickness is about 0.1 to 20 μm, preferably about 0.5 to 4 μm,
Further, when the wall material is a melamine-formalin resin, the particle diameter is 5 to 50 μm, preferably 5 to 20 μm, and the wall thickness is 0.2 to 0.2 μm.
It is about 30 μm, preferably about 0.5 to 6 μm.

The phytontide referred to in the present invention is a single product or a mixture of natural phytontide and synthetic phytontide. Examples of natural phytontide include hinoki, hiba,
Examples include compounds obtained by steam distillation of pine, eucalyptus, citrus leaves, stems, roots, and the like. Examples of the synthetic phytontide include monoterpenes such as α-pinene, β-pinene, cineole, gamma terpinene, and hinokitiol, and sesquiterpenes. This phytoncide is
The content is preferably 5 to 99% by weight, particularly preferably 30 to 95% by weight, based on the total weight of the microcapsules.

The silicone resin binder suitably used as the binder in the present invention has a coating effect and plays a role as an adhesive between the microcapsules and the fiber structure. It is preferable to use a silicone-based aqueous emulsion type excellent in water and easily dilutable, for example, an emulsifier containing an organopolysiloxane as a main component and an emulsifier. This is a material that is cured by the removal of water and forms a hair on a rubber-like film having the characteristics of silicone rubber, and has a durable adhesive effect.

The organopolysiloxane emulsion is more preferably a low-temperature-reactive organopolysiloxane prepolymer emulsion. The low-temperature reaction type organopolysiloxane prepolymer emulsion referred to herein includes, for example, 100 parts by weight of an organopolysiloxane having at least two hydroxyl groups bonded to a silicon atom in one molecule and 100 parts by weight of a derivative thereof, with respect to an aminofunctional silane or a derivative thereof. 0.1 to 10 parts by weight of a reaction product of a hydrolyzate and an acid anhydride and colloidal silica 1
1 to 60 parts by weight of the homodispersion liquid based on the organopolysiloxane and 0.01 to 0.01 parts by weight of the curing catalyst
An aqueous emulsion of silicon comprising 10 to 10 parts by weight, 0.3 to 20 parts by weight of an anionic emulsifier and 25 to 600 parts by weight of water.

Further, as a binder applied to the present invention, an emulsion of a blocked isocyanate prepolymer reactive at a low temperature can be used together with a metal salt of a fatty acid. The low-temperature reactive blocked isocyanate prepolymers include sodium bisulfite, acetylacetone, ethyl acetoacetate, diethyl malonate, etc., which react temporarily with isocyanate groups to form temporarily stable compounds, which are subsequently thermally dissociated by heat treatment. And a compound containing at least one blocked isocyanate group in a molecule for regenerating an isocyanate group, and a prepolymer obtained by polymerizing an acrylic or methacrylic compound and a modified acrylic or methacrylic compound such as a silicon-modified or a fluorine-modified. No.

The metal salt of a fatty acid is a catalyst for accelerating the dissociation of the blocked isocyanate, and examples thereof include zinc octylate, zirconium octylate, zinc laurate, and zinc stearate.

Further, as the binder, an emulsion of an acrylic or methacrylic compound obtained by emulsion polymerization of a monomer containing one or more vinyl groups can be used. Such emulsions include, for example, acrylic acid, methacrylic acid, methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, butyl acrylate, butyl methacrylate, acrylonitrile, acrylamide, N-methylolacrylamide, 2-hydroxyethyl acrylate, 2-hydroxyethyl acrylate, It is an emulsion of an emulsion polymer such as hydroxybutyl acrylate.

Further, a polyalkylene emulsion,
An emulsion of a polyester resin composed of a polyhydric alcohol and a polybasic acid or a polyurethane emulsion composed of a diisocyanate and a polyol can also be used as the binder.

Examples of the polyalkylene include polyethylene and polypropylene, and examples of the polyhydric alcohol include ethylene glycol, 1,4-butanediol,
1,6-hexanediol, diethylene glycol, trimethylolpropane, and polybasic acids include phthalic acid, adipic acid, maleic acid, trimetic acid, terephthalic acid, and the like. Further, as the diisocyanate, hexamethylene diisocyanate, xylene diisocyanate, tolylene diisocyanate, 4,4'-diphenylmethane diisocyanate, 1,5-naphthalenediisocyanate, etc., and as the polyol, polyethylene adipate, polypropylene adipate, polybutylene adipate, polyethylene Examples thereof include phthalate, polyethylene glycol, polypropylene glycol, and polyethylene propylene glycol. An emulsion of a polyurethane resin composed of these forms a water-insoluble resin by a drying treatment.

Further, the binder desirably contains a pressure buffer. A pressure buffer is an emulsion containing a polyorganic carboxylic acid such as polyacrylic acid or acrylic acid and an acrylate copolymer, a compound which forms a salt with an alkaline substance such as ammonia or soda ash, a sodium polyacrylate salt, Neutralized products of organic polycarboxylic acids such as ammonium polyacrylate and amino polyacrylate, or neutralized products of copolymers of acrylic acid and acrylate, polyalkylene glycols such as polyethylene glycol and polypropylene glycol, and polyethylene The terminal of a polyalkylene glycol such as glycol or polypropylene glycol is terminated with an alkyl group C _n H _{2n + 1} (where n is 1
Or an integer selected from polyvinylpyrrolidone and the like.

As described above, the phytoncide-encapsulated microcapsules are added to a treatment solution comprising the emulsion and preferably a pressure buffer, and applied to the fibrous structure.
At this time, the pH of the treatment solution is 5 to 10, preferably 6 to 9
It is preferable to adjust with soda ash, sodium bicarbonate, ammonia, etc.

As a method for applying the treatment liquid containing the above-mentioned phytoncide-enclosed microcapsules, a padding method, a spray method, an immersion dewatering method, a coating method and the like can be mentioned.

In any case, the binder is provided 0.3 to 20 times, preferably 0.5 to 15 times (by weight) the microcapsule, and exhibits a sufficient adhesive effect. If this is less than 0.3 times, the coating effect is inferior,
On the other hand, even if this is given more than 20 times, the adhesion rate of the microcapsules hardly changes, and conversely, the problem of unpleasant odor is caused due to the soft feeling of the fibrous structure or the type of the resin, which is not preferable. The amount of adhesion of these two is usually 0.3 to 12.0 of the weight of the fibrous structure in the adhering portion.
%, Preferably 0.5 to 9.0%. That is, since the microcapsules sufficiently adhere to the fiber structure by being provided with the binder in the above ratio,
If the amount of adhesion between these two is less than 0.3%, both the forest bathing effect and the durability are insufficient, and if it exceeds 12.0%, the feeling as a fiber structure is affected. In addition, there is a problem that the scent of phytoncide emanating at one time becomes too tight, and both are unsuitable. In other words, those that have a favorable feeling and flexibility together with a favorable phytoncide diverging effect, and satisfy all the conditions that the effect has appropriate durability and are not interfered by an off-flavor, Quantity.

This binder is preferably applied to the final product such as clothing, which is not subjected to a post-process. For example, the binder is immersed in a treatment liquid tank containing phytoncide-enclosed microcapsules, and dehydrated and dried by a method that does not impair the feeling. do it.

After the treatment liquid containing the phytoncide-encapsulated microcapsules is applied to the fiber structure as described above, the microcapsules are dried at a temperature of less than 150 ° C. to adhere to the fiber surface. As an example of the drying treatment, drying is performed at a temperature of 60 to 150 ° C., preferably 80 to 130 ° C. for 5 seconds to 30 minutes, preferably 10 seconds to 10 minutes, or after drying, a temperature of 80 to 150 ° C., preferably 100 to 13 ° C.
Heat treatment at 0 ° C. for 5 seconds to 10 minutes, preferably 10 seconds to 5 minutes may be mentioned.

It should be noted that there is no particular problem with respect to the effects of the present invention even when a general finishing agent such as a softening agent, a hand controlling agent, a dye fixing agent, a reactive resin, a condensation resin, or a catalyst is used in combination. ,
Further, there is no problem even if the pigment is used in an amount of 10% by weight or less in the phytoncide treatment.

By the treatment as described above, phytoncide having good durability can be provided to the fiber structure without impairing the feeling.

[0032]

According to the present invention, the phytoncide is adhered to the fiber structure in a closed system in which the phytoncide is encapsulated in the microcapsule. Divergent effect.

Further, since the phytoncide-enclosed microcapsules are adhered to the fibrous structure by the binder, the durability is excellent.

[0034]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments.

The test method which is the basis of the numerical values in the following examples is as follows.

(1) Washing test JIS L-0217
103 method air drying

(2) Scent sensitivity test Ten testers were symmetrical, and the scores were evaluated according to the following criteria. 5: Finished after processing 4: Slightly less than finished processing 3: Between 2 and 4 2: Significantly reduced than finished processing 1: Slightly scented 0: No scent at all

(3) Test for sedation of nerves A futon cover was prepared from the products obtained in Examples 2, 3 and 4, and 8 hours after sleeping on 10 testers wearing the cover The evaluation was performed according to the following criteria. ◎: slept very well ○: slept well △: normal

(4) Antibacterial Activity (Bacterial Counting Method) Bacteria used for the test: staphylococcus aureus FDA 209P (IFO12732) Preculture Culture at 37 ° C. for 18 to 24 hours in a bouillon medium. Preparation of Test Bacterial Suspension Diluents having a bacterial count of at least 10 ⁸ / ml and in the logarithmic growth phase are diluted to 10 ⁶ / ml. Sterilization of sample (test cloth) 0.2 g of test cloth is autoclaved (121 ° C x 20 minutes)
Sterilization. Culture test a. 0.2 g of 10 ⁶ cells / ml is absorbed into 0.2 g of test cloth sterilized by autoclaving (121 ° C. × 20 minutes), and cultured at 37 ° C. for 18 to 24 hours. b. After the culture, 20 ml of physiological saline is added to disperse viable bacteria. c. This dispersed bacterial solution was sequentially diluted with a physiological saline solution, and 10
Make a double dilution series. d. 1 ml from this dilution line was added to each petri dish (normal agar medium), spread evenly, cultured at 37 ° C. for 18 to 24 hours, the number of grown colonies was counted, and the dilution factor was multiplied. Calculate the number. Number of viable bacteria = number of colonies x 20 x dilution ratio Calculation of increase / decrease value difference in the method of measuring the number of bacteria Non-processed sample [A] Dispersion collected immediately after inoculation (3 samples) Average value A [B] Dispersion collected after culturing for 18 hours Sample (3 samples) Average value B Processed sample [C] Samples dispersed and collected after culturing for 18 hours (3 samples) Average value C Increase / decrease value difference = log (B / A)-log (C / A) log (B / A) )> 2, this test is valid Log (B / A) ≦ 2, retest

(5) Deodorant test Trimethylamine 0.1 was placed in a closed bottle containing 1 g of a sample.
Immediately after the injection and for 24 hours, air 1 in the bottle was injected.
A ml was taken out and measured with an Alabaster deodorizing tester.

Example 1 A pantyhose shown below, which had been knitted, scoured and bleached, dyed and fixed by a generally known method, was used as a sample. Pantyhose (support type) Leg part (20 × 13 × 13DCY) × 13d / 3f
Raw silk Panty (20 × 30POY) × 30d / 8f wooly yarn Toe 13d / 3f raw silk × 30d / 8f wooly yarn × 70d / 18 wooly yarn

The pantyhose was immersed in a treatment solution having the following composition and treated at 40 ° C. for 20 minutes. Binder: Aqueous silicon binder Shin-Etsu Silicon KM2002T (Shin-Etsu Chemical Co., Ltd., solid content 40%) pH adjuster: Ultra MT (Mitsubishi Chemical Co., Ltd.) Softener: Water-absorbing softener Sansofuna Tough A (Sanyo Chemical Co., Ltd.) Industrial Co., Ltd.) Microcapsule: Wall agent Urea-formalin resin Inclusion agent Phytoncide (Phyton α, manufactured by Hertas International Co., Ltd.) Inclusion rate 40% Average particle diameter 10μ

Thereafter, the product was dehydrated, dried at 120 ° C. for 10 seconds, placed in a last at 115 ° C. for 10 seconds, and set to obtain a product of Example 1.

Comparative Example 1 In the same manner as in Example 1, except that phytoncide microcapsules were not added and the encapsulant was a jasmine-based synthetic fragrance microcapsule, the same process as in Example 1 was performed. The product of Example 1 is obtained.

Comparative Example 2 The same treatment as in Example 1 was carried out except that phytoncide microcapsules were not added, and a corresponding amount of phytoncide essential oil (phyton α) was added instead.
The same process as in Example 1 was performed to obtain a product of Comparative Example 2.

Table 1 shows the fragrance durability of the products obtained in Example 1 and Comparative Examples 1 and 2, and Table 2 shows the antibacterial properties.

[0047]

[Table 1]

[0048]

[Table 2]

As is clear from Tables 1 and 2, the products obtained in the examples have durability of fragrance and excellent antibacterial properties.

Example 2 Desizing, scouring and bleaching, mercerizing, dyed warp 40th, weft 40th single yarn, warp density 126 by a generally known method.
A cotton flat woven fabric having a density of 96 yarns / inch, a weft density of 96 yarns / inch, and a basis weight of 105 g / m ² was used as a test sample.

This plain fabric is immersed in the treatment solution shown below,
Squeeze with mangle at pickup rate 80%, 120 ℃
For 2 minutes to obtain the product of Example 2. Binder: polyurethane emulsion Superflex E2000 (manufactured by Daiichi Kogyo Seiyaku Co., Ltd., solid content: 40%) Softener: polyethylene softener Iodozol PE400 (manufactured by Kanebo uenu SCC Ltd.) Microcapsules: Example 1 and As well

Comparative Example 3 In the same manner as in Example 2, except that phytoncide microcapsules were not added and lavender-based synthetic flavor microcapsules were added, the same processing as in Example 2 was performed. Got the product.

Comparative Example 4 In the same manner as in Example 2, except that the phytoncide microcapsules were not added and the essential oil (phyton α) of phytoncide was added in a corresponding amount, the same treatment as in Example 2 was performed. The product of Example 4 is obtained.

Table 3 shows the durability of the fragrance and the sedative action of nerves of the products obtained in Example 2 and Comparative Examples 3 and 4, and Table 4 shows the antibacterial properties.
Table 5 shows the deodorizing rates.

[0055]

[Table 3]

[0056]

[Table 4]

[0057]

[Table 5]

As is clear from Tables 3 to 5, the products obtained in the examples have durability of fragrance and durability of sedation of nerves, and are excellent in antibacterial property and deodorant effect. .

[0059]

According to the present invention, the following effects can be obtained by the above-described configuration.

First, since the phytoncide microcapsules are adhered to the fibrous structure, for example, clothing, the capsules are broken little by little during wear or by intentional friction to emit suitable phytoncide. Therefore, the phytoncide does not disappear at once and disappears, but has sufficient durability.

Further, by providing a resin binder at an appropriate ratio to the microcapsules, the adhesive force and the adhesion are remarkably improved, and the desired amount of adhesion and good phytoncide durability are obtained.

Since phytoncides exhibiting functions such as nerve sedative action, antibacterial property and deodorizing property are constantly scattered, the same effect as that of bathing in the forest all day while in daily life can be obtained, which is extremely useful. It is. Moreover, it shows a milder effect and is superior in stability as compared with a synthetic antibacterial agent or deodorant.

The manufacturing method does not require a complicated processing step, and provides a treating agent in which microcapsules and a resin binder are mixed at an appropriate ratio, and performs a heat treatment to obtain a woven or knitted fabric, clothing, or the like. It is possible to impart durable phytoncide to the fibrous structure without impairing the original feeling.

That is, by selecting the microcapsules, the binder, the pressure buffer, the processing temperature and the like as in the present invention, the microcapsules are hardly broken in the processing step.
Only at the time of using (wearing) the fibrous structure, the microcapsules are broken and phytoncides diverge sufficiently. In particular, when a silicon-based binder is used, the problem of fragrance interference due to the off-flavor of the binder does not occur.

Claims (2)

(57) [Claims] 1. A fibrous structure having a forest bathing effect in which phytoncide-enclosed microcapsules are fixed to a fibrous structure with a resin binder. 2. A treatment liquid comprising phytoncide-encapsulated microcapsules and a resin binder is applied to at least a part of the fiber structure, and then dried at a temperature lower than 150 ° C. to fix the microcapsules on the fiber surface. A method for producing a fibrous structure having a forest bathing effect, comprising: