JP2002235283A - Fibrous structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fibrous structure having excellent functional characteristics, such as an anionic effect which has never been conventionally achieved and is durable, moisture absorption, antibacterial properties, and deodorizing properties, and further capable of widely used, in detail, for clothing, bedding, curtains, wall covering materials, automotive interior finishing materials, sheet materials, etc. SOLUTION: This fibrous structure is formed by adhering a powder made of a specified cellulosic material, such as bamboo, paulownia, galangal, bamboo grass (Sasa veitchii), and tea, to the surfaces of fiber thereof.

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 excellent functions such as durable negative ion effect, hygroscopicity, antibacterial property, deodorizing property and the like, which have never existed before. Furthermore, the present invention relates to a fiber structure that can be widely applied to uses such as clothing, bedding, curtains, wall covering materials, vehicle interior materials, and sheet materials.

[0002]

2. Description of the Related Art In recent years, environmental problems such as global warming and acid rain have been widely taken up. Among them, especially in the daily life in urban areas, as a result of the increase of positive ions in the air and the decrease of negative ions due to exhaust gas etc., the adverse effects of oxidative decay, internal abnormalities, aging, etc. on our bodies and the environment It is said that adverse effects have also occurred. Now, our body, environment, plants, and even water are weakly acidified, creating insufficient negative ions to reduce the weakly acidic human body and environment to neutral and alkaline states. This is the negative ion effect. Negative ions occur abundantly in forests, waterholes, and shorelines that are rich in water in nature, and have a healing effect that calms the minds of people.
Tourmaline ore has been found to generate such negative ions, but this ore is also called tourmaline and is a substance that has a permanent spontaneous electric polarization, and generates negative ions by external stress. . For example, Japanese Patent Publication No. 6-1049
No. 26 proposes electret fibers in which finely divided tourmaline is fixed or contained in organic fibers. However, originally, the negative ions emitted by tourmaline itself are weak, and the amount of adhesion to the fiber is 3-4%.
There was a problem that the negative ion effect could not be expected so much because of the small amount.

[0003]

SUMMARY OF THE INVENTION In view of the background of the prior art, the present invention has excellent durability such as a negative ion effect, hygroscopicity, antibacterial property and deodorizing property which have not existed in the past. Fibrous structures, and further, clothing using the same,
Bedding and curtains will not be provided.

[0004]

Means for Solving the Problems The present invention has the following structure to solve the above-mentioned problems. `` (1)
A fibrous structure, wherein a powder of a cellulosic substance is attached to a fiber surface.

(2) Clothing using the fiber structure according to (1).

(3) A bedding using the fibrous structure according to the above (1).

(4) A curtain using the fiber structure according to (1). "

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION As the fibers constituting the fiber structure of the present invention, at least one kind selected from synthetic fibers and natural fibers can be used. As the synthetic fibers, polyester fibers are preferable. used. The polyester-based fibers include polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate and copolymerized polyester fibers containing these as a main component, and further blended or blended with synthetic fibers or recycled fibers other than polyester-based fibers. It may be.

As the natural fibers, cellulosic fibers, wool, silk and the like can be used. Examples of the cellulosic fibers include natural cellulosic fibers such as cotton, hemp and pulp, and regeneration of viscose rayon and the like. Cellulose fibers and the like can be used.

In the fiber structure of the present invention, these synthetic fibers may be used alone or may be formed by blending or blending.

The fibrous structure referred to in the present invention is not limited to fabrics such as woven fabrics, knitted fabrics and non-woven fabrics, but may be used irrespective of their structures and shapes as long as they are products containing fibers such as strips, strings, threads and the like. can do.

In the present invention, as the cellulosic substance, plants, Japanese paper, rayon, carboxymethylcellulose, hydroxypropylcellulose and the like can be used, but bamboo, paulownia, moon peach, kumasasa, tea, persimmon and the like are preferable.
Bamboo materials, paulownia wood, moon peach leaves, bear bamboo leaves, tea leaves, persimmon leaves and the like are more preferable, and bamboo materials such as Moso bamboo, true bamboo, kara bamboo, and tan bamboo are particularly preferable.

The particle size of the powder of the cellulosic substance used in the present invention is positively correlated with the specific surface area of the powder, in view of the amount of negative ions generated, hygroscopicity, antibacterial properties, deodorizing properties and the like. , Preferably 20 μm or less, more preferably 10 μm or less.
μm or less, more preferably 5 μm or less.

In the present invention, as a method for pulverizing a cellulosic substance, for example, a dry pulverizer, a wet pulverizer,
A conventional method using a freeze grinder or the like may be used.

In the present invention, the method for measuring the particle size of the powder may be a conventional method using a laser analysis method or the like.

In the present invention, the expression that the powder of the cellulosic substance is attached to the fiber surface means that the powder is contained both inside the fiber and on the fiber surface, or when the powder is contained only on the fiber surface. Means either.

As a method for adhering the powder of the cellulosic substance to the fiber structure, kneading of the raw yarn at the stage of spinning the synthetic fiber or using a water dispersant of the powder in combination with a binder resin as a processing liquid is performed. Processing and the like. The binder resin is not particularly limited, but acrylic, polyurethane, silicone, fluorine, melamine, glyoxal, and cellulose resins are preferred from the viewpoint of texture and washing durability.

In the present invention, as a method of adhering the powder of the cellulosic substance to the fiber surface in the post-processing, the method of impregnating the fiber structure with a processing liquid comprising an aqueous dispersant of the powder together with a binder resin may be used. , Squeezed to a certain amount with a mangle roll, etc., the method of passing through a dry-cure process and adjusting the working fluid to an appropriate viscosity, and applying with a knife coater, gravure roll coater, printing, etc., at a temperature of 200 ° C. or less In addition to the fixing method, a method of bonding or heat bonding a laminate sheet containing the powder may be used.

The effects of the fibrous structure obtained in the present invention include a healing effect due to generation of negative ions, a heat generation effect due to moisture absorption due to excellent moisture absorption, a cooling effect for moisture release due to moisture release, antibacterial properties, and deodorant. And the like.

The fibrous structure of the present invention thus obtained comprises:
Further, various functional agents such as an antibacterial agent, a deodorant, a flame retardant, a water repellent, an oil repellent, an antifouling agent and an antistatic agent can be contained.

The fibrous structure obtained according to the present invention has the above effects, and can be used for sportswear, work uniforms,
It is suitably used for underwear, shirts, lining, futon cotton, blankets, curtains, wall materials, vehicle interior materials, and the like.

[0022]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. The percentages and parts in the examples are on a weight basis unless otherwise specified. <Evaluation Method> The quality evaluation in the examples was performed according to the following method. [Ion generation amount] Measuring device: AIR ION COUNTER (USA
Measurement conditions: room temperature 20 ± 1 ° C., humidity 50 ± 3%, room size 3 m × 5 m × 5 m, measurement time 5 minutes, suction volume 60 L / min,
Sample vibration cycle 1 second, sample size 20cm × 20
cm Evaluation result: Average ion generation amount for 5 minutes (pcs / c)
c) When a negative ion is generated, a negative value is indicated, and when a positive ion is generated, a positive value is indicated. [Hygroscopicity (ΔMR)] ΔMR (%) = MR ₂ −MR ₁ Here, MR ₁ refers to the moisture absorption (%) when left in a 20 ° C. × 65% RH atmosphere from an absolutely dry state for 24 hours. , Which corresponds to the state in which the clothes are danced, that is, the environment before wearing. Further, 30 ° C. from the absolute dry state and MR ₂ × 9
Moisture absorption (%) when left in a 0% RH atmosphere for 24 hours
And roughly corresponds to the environment in the clothes in the exercise state.

[0023] ΔMR are those represented by the value obtained by subtracting the value of the MR ₁ from MR _2, when the movement from wearing the clothes, equivalent to or absorb much of the stuffiness of the clothes,
It can be said that the higher the ΔMR value, the more comfortable. Generally, the ΔMR of polyester is 0%, 2% for nylon, and 4% for cotton.
% And 6% wool. [Antibacterial property] The evaluation method used was a unified test method, and the test cells used were clinical isolates of Staphylococcus aureus. The test method is
The test bacteria were poured into a sterilized test cloth, the number of viable bacteria after culturing for 18 hours was counted, and the number of bacteria with respect to the number of cultured bacteria was determined.

Under the condition of log (B / A)> 1.5,
g (B / C) was regarded as a bacteriostatic activity value, and 2.2 or more was regarded as a pass. However, A is the number of bacteria collected and dispersed immediately after inoculation of the unprocessed product, B is the number of bacteria collected and dispersed after culturing the unprocessed product for 18 hours,
C represents the number of bacteria dispersed and recovered after culturing the processed product for 18 hours. [Deodorant] 10 cm in a 500 ml polyethylene container
A work cloth of × 10 cm was put therein, ammonia gas was put therein so as to have an initial concentration of 200 ppm, the container was sealed, and after standing for 30 minutes, the residual ammonia gas concentration was measured with a gas detector tube. The deodorization rate was calculated by the following equation.

Deodorization rate (%) = {(initial density−residual density after 30 minutes) / initial density} × 100 <Test cloth> 85% of polyester having an average fineness of 3.3 dtex and 85% of cotton 15 % Of a woven fabric using a spun yarn having a basis weight of 200 g / m ² and subjected to scouring, drying, intermediate setting, and dyeing under ordinary processing conditions, to obtain a test cloth. (Example 1) Raw bamboo material of Moso bamboo was cut, divided, compressed and pulverized, and then powdered by a dry pulverizer. When the average particle size was confirmed by a laser analysis method, it was 30 μm.
30 g / l of the powder, 5 g / l of "Sumitex Resin M-3" (manufactured by Sumitomo Chemical Co., Ltd.), and 0.5 g of "Sumitex Accelerator ACX" (manufactured by Sumitomo Chemical Co., Ltd.)
/ L after immersing the test cloth in the aqueous dispersion treatment liquid adjusted with the composition of
After squeezing with a mangle with a pickup of 80%, drying at 130 ° C. for 2 minutes and dry heat treatment at 180 ° C. for 1 minute were performed with a pin tenter. Table 1 shows the evaluation results of the obtained work cloth. The negative ion generation amount, hygroscopicity, antibacterial property and deodorant property of the processed cloth were very excellent. (Example 2) The same treatment as in Example 1 was carried out except that the average particle diameter of the powder of Moso bamboo was 5 µm. Table 1 shows the evaluation results of the obtained work cloth. The negative ion generation amount, hygroscopicity, antibacterial property and deodorant property of the processed cloth were very excellent. (Example 3) The same treatment as in Example 1 was carried out except that paulownia wood was used instead of Moso bamboo. Table 1 shows the evaluation results of the obtained work cloth. The negative ion generation amount, hygroscopicity, antibacterial property and deodorant property of the processed cloth were very excellent. (Example 4) Except for using moon peach leaves instead of Moso bamboo,
The same processing as in Example 1 was performed. Table 1 shows the evaluation results of the obtained work cloth. Negative ion generation amount of the work cloth,
The hygroscopicity, antibacterial property and deodorant property were very excellent. (Comparative Example 1) An untreated product of a test cloth was evaluated.
Table 1 shows the evaluation results of the product. The negative ion generation amount, hygroscopicity, antibacterial and deodorizing effects of the product were all unsatisfactory. (Comparative Example 2) The same treatment as in Example 1 was performed except that the powder of Moso bamboo was not added. Table 1 shows the evaluation results of the obtained work cloth. The negative ion generation amount, hygroscopicity, antibacterial property and deodorizing effect of the processed cloth were all unsatisfactory.

[0026]

[Table 1]

[0027]

Industrial Applicability According to the present invention, a fiber structure having excellent functions such as durable negative ion effect, hygroscopicity, antibacterial property, deodorizing property and the like, which has never existed before, more specifically, clothing, bedding, It is possible to provide a fiber structure that can be widely applied to uses such as curtains, wall covering materials, vehicle interior materials, and sheet materials.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A41D 31/00 501 A41D 31/00 501Z 502 502A 502R 503 503B (72) Inventor Yukihiro Maekawa Dojima, Kita-ku, Osaka-shi 1-6-20 F-term (reference) in Toray Industries, Inc. Osaka Works 3B028 DA03 3B029 HA02 HA06 HB03 HB05 4L033 AA02 AA07 AB05 AC07 AC10 CA03

Claims (10)

[Claims] 1. A fibrous structure characterized in that powder of a cellulosic substance is attached to the surface of a fiber. 2. The fiber structure according to claim 1, wherein said cellulosic substance is a plant. 3. The plant according to claim 2, wherein said plant is at least one selected from bamboo, paulownia, moon peach, kumasasa, and tea.
The fiber structure according to any one of the preceding claims. 4. The method according to claim 1, wherein the cellulosic material is Japanese paper, rayon,
The fiber structure according to claim 1, wherein the fiber structure is at least one selected from a carboxymethylcellulose compound and a hydroxypropylcellulose compound. 5. The fibrous structure according to claim 1, wherein said powder has an average particle size of 20 μm or less. 6. The fiber structure according to claim 1, wherein the fiber structure generates negative ions. 7. The fiber structure is used for any application selected from sportswear, work uniform, underwear, shirt, lining, futon cotton, blanket, curtain, wall material, and vehicle interior material. The fibrous structure according to any one of claims 1 to 6, wherein 8. A garment using the fibrous structure according to any one of claims 1 to 6. 9. A bedding using the fibrous structure according to any one of claims 1 to 6. 10. A curtain using the fibrous structure according to claim 1.