JPH1037066A - Deodorant woven fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a deodorant woven fabric rich in durability without impairing physical properties such as tear strength by carrying out the combined weaving of a fiber having light catalyst activity to odor component in the air with a bulky yarn. SOLUTION: This deodorant woven fabric is obtained by applying 0.1-10wt.%, preferably 0.3-5wt.% sol of light catalyst such as anatase type titanium oxide in gel-swelling state to polyacrylonitrile by a dip-nip system when polyacrylonitrile is subjected to wet spinning to form a polyacrylonitrile-based fiber having light catalyst activity to odor component in the air and using the fiber having the light catalyst activity as weft and using a polyester bulk yarn as warp, carrying out combined weaving of the fiber with the bulky yarn.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorant fabric, and more particularly to a deodorant fabric which can maintain a deodorant effect semipermanently and is excellent in physical properties such as tear strength.

[0002]

2. Description of the Related Art Various types of deodorant fibers have been conventionally developed. In particular, deodorant fibers obtained by incorporating a deodorant component into raw yarn or raw cotton by kneading or the like are provided with deodorizing properties by so-called post-processing. It is superior in durability and the like and is widely used. However, when producing various deodorant fabrics using such deodorant fibers, various color patterns and various mechanical physical properties are required, so that they are often mixed with other fibers such as polyester. . In particular, kneaded deodorant fibers often have poor dyeing properties, and therefore, usually, a woven fabric having a desired color pattern is often obtained by mixing with a yarn-dyed yarn. In the deodorant woven fabric mixed with dyed yarn,
If this is used for a long time, the odor may remain on the woven fabric even after the odor is eliminated by the deodorizing fiber. For example, in the case of deodorant fibers using the adsorption function as a deodorant principle, the odor once adsorbed may be re-released due to environmental temperature and humidity, and this is sensed as the odor of the fabric. Particularly in tobacco deodorant products, this odor tends to be very disliked, and its improvement is awaited.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, and to maintain the deodorizing effect semipermanently even when deodorizing fibers and ordinary fibers are mixed. Another object of the present invention is to provide a deodorant woven fabric which can maintain physical properties such as tear strength.

[0004]

Means for Solving the Problems As a result of intensive studies in view of the above problems, the present inventors have found that a woven fabric obtained by interwoven with other fibers using a fiber having photocatalytic activity instead of a deodorant fiber is: Even if fibers other than fibers having photocatalytic activity are mixed, the deterioration of the deodorizing performance is small, and even if the fibers self-degrade due to the photocatalytic action, the strength required for the fabric is sufficiently maintained due to the presence of other fibers. The present inventors have found out what can be done and have reached the present invention. That is, the invention claimed in the present application is as follows.

(1) A deodorant woven fabric obtained by interweaving fibers having photocatalytic activity against odorous components in the air and bulky yarn. (2) The deodorizing woven fabric according to (1), wherein the fiber having a photocatalytic action contains titanium oxide. (3) The deodorant woven fabric according to (2), wherein the titanium oxide is of an anatase type. (4) The deodorant woven fabric according to (1), wherein the fiber having photocatalytic activity is a polyacrylonitrile fiber. (5) The deodorant according to (1), wherein the fiber having photocatalytic activity is obtained by applying a photocatalytic sol in a gel swelling state by a dip nip method when wet spinning a polyacrylonitrile fiber. fabric. (6) The deodorant woven fabric according to (1), wherein the bulky yarn is a polyester fiber.

[0006] The fiber having photocatalytic activity used in the present invention can be obtained by introducing particles having photocatalytic activity into the interior or surface of the fiber. In the present invention, the photocatalytic activity means that a catalytic action is exerted by light irradiation and an action of decomposing odorous components in the air by a chemical reaction such as an oxidation reaction, for example, a hole is generated in the catalyst by light irradiation, This refers to the action of decomposing odorous components in the air by oxidation reaction or the like when oxygen is generated. The particles having photocatalytic activity are not particularly limited as long as they have the photocatalytic activity as described above, and include, for example, titanium oxide and zinc oxide. Anatase-type titanium oxide having a high action is more preferable. The activity may be improved by doping the titanium oxide with a metal such as palladium or copper.

The method of introducing particles having photocatalytic activity into fibers is generally a method in which the particles are kneaded into a stock solution for spinning the fibers and spun. However, when the wet spinning is performed, the photocatalytic sol is gel-swelled. May be adhered by a dip nip method. The latter method is preferable in that the photocatalyst particles can be adhered to the fiber surface, so that the photocatalytic action is sufficiently exhibited. The dip nip method is a method of immersing a photocatalyst in a working liquid in which the photocatalyst is dispersed on a continuous spread, immediately squeezing the liquid with a nip roller such as a mangle, and giving a desired amount of adhesion. The content of the particles having photocatalytic activity in the fiber is not particularly limited, but is usually 0.1 to 10% by weight, preferably 0.3 to 5% by weight based on the fiber. When the content of titanium oxide is less than 0.1% by weight, the decomposition performance of the organic substance, particularly a compound containing a carbonyl group or an acidic compound, by the catalytic action against the bad smell is low.
If the content is more than 0% by weight, it becomes difficult to contain titanium oxide in the fiber, and there are problems such as a decrease in fiber physical properties, a decrease in feeling, a wrapping of the fiber in a later step such as a spinning step, and abrasion of a spinning machine. May occur.

[0008] The size of the titanium oxide is not particularly limited as long as the production of the fiber is not hindered, but is preferably 0.07 µm or less from the viewpoint of easy adhesion to the fiber. The particle diameter of titanium oxide is determined by measuring the particle diameter of titanium oxide present in the dispersion by a laser diffraction scattering particle size distribution analyzer (manufactured by Horiba, Ltd.
LA-910W). In order to maintain a sufficient deodorizing effect on the deodorizing fabric, the acetaldehyde deodorizing rate at the time of light irradiation is preferably 80% or more,
More preferably, it is 90%.

The fiber into which the particles having photocatalytic activity are introduced is not particularly limited. For example, synthetic fibers such as polyvinyl alcohol fibers and acrylic fibers, semi-synthetic fibers such as cellulose acetate fiber, copper ammonia silk, rayon, etc. Recycled fiber and the like can be used. Among these, synthetic fibers that are less likely to self-degrade due to photocatalytic action and decrease in strength are preferable, and synthetic fibers by wet spinning that can provide particles having a photocatalytic action in a gel-swelled state, particularly polyacrylonitrile-based Synthetic fibers are more preferred. Fibers having photocatalytic activity may be damaged by light irradiation and their physical properties such as tear strength may be reduced.However, by using a fabric mixed with ordinary fibers, the physical properties of the fabric after light irradiation can be sufficiently improved. And the deodorizing effect does not decrease even when ordinary fibers are mixed.

In the present invention, bulky yarn is used as a fiber mixed with a fiber having photocatalytic activity. Since the bulky processed yarn has a very sparse structure, it allows light to pass through well, can supply more light to the fiber having photocatalytic activity, and can enhance the deodorizing effect of the woven fabric. There is no particular limitation on the bulky yarn, and polyester fibers and nylon fibers are used.However, since the odorous products generated by decomposition due to photocatalytic activity are recaptured to enhance the deodorizing effect, chemical adsorption and physical adsorption are eliminated. It is preferable to use a deodorant fiber having an odor mechanism. The fiber into which the particles having photocatalytic activity are introduced may be used as the bulky yarn, and it is particularly effective to use the tobacco deodorant fiber.

There is no particular limitation on the method of interweaving the fiber having photocatalytic activity and the bulky processed yarn. For example, one is used for the warp and the other is used for the weft, or both are alternately used for the warp and / or the weft. Etc. can be appropriately selected.
Further, in order to enhance the deodorizing effect of the fabric, other deodorant fibers may be combined and interwoven. As a deodorant fiber, for example,
Acrylic fiber copolymerized with acrylic acid, acrylic fiber grafted with acrylic acid, cellulose fiber, polyester fiber, L-ascorbic acid-iron and phthalocyanine-
Synthetic fibers into which iron has been kneaded, activated carbon fibers, or fibers containing a transition metal such as copper, iron, zinc, or silver in the above-described fiber containing acrylic acid, or the like can be used. In addition, various deodorizing treatments can also be applied to the interwoven fabric of fibers having photocatalytic activity.

Further, for example, by using a jacquard or the like with a dyed yarn for a bulky processed yarn to be woven,
A color pattern can be expressed on the surface of the deodorant fabric. Further, a color pattern can be developed by printing a pigment on the deodorant fabric itself. The deodorant woven fabric of the present invention can be applied to various kinds of cushions, curtains, carpets, wallpaper, upholstery, car seats and the like for vehicles using polyester cotton or the like as batting.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples. Further,% in the examples means% by weight unless otherwise specified. The deodorization rate of acetaldehyde at the time of light irradiation of the fiber having photocatalytic activity was measured by the following method. First, in order to eliminate external factors in the sensory evaluation of deodorant performance and tobacco odor, functional fibers were previously irradiated with a fade meter (carbon arc method) at 63 ° C. for 40 hours, and then the following acetaldehyde deodorizing test was performed. .

Acetaldehyde 10 ppm in a Tedlar bag (manufactured by GM Science) having a capacity of 1000 ml.
Was added to 600 ml, and 1 g of fiber was added. The concentration of residual acetaldehyde when left under a black light having an ultraviolet intensity of 0.5 mW / cm ² for 120 minutes was measured with a gas detection tube manufactured by Gastech. For the generation of acetaldehyde, a standard gas generator and a permeation tube manufactured by Gastech were used. In addition, the temperature of the environment where it was left was 20 ° C. The deodorization rate was determined by the following equation. Deodorization rate = [(initial gas concentration-residual gas concentration) / initial gas concentration] x 100 (%)

Examples 1 to 3 and Comparative Examples 1 and 2 When a polyacrylonitrile-based synthetic fiber is wet-spun,
In a gel swelling state, a titanium oxide sol (STS-01, manufactured by Ishihara Sangyo Co., Ltd.) as a photocatalytic sol was applied to the fiber by a dip nip method at 1% to obtain a fiber having photocatalytic activity.
The acetaldehyde deodorizing rate of this fiber upon light irradiation is 100.
%Met. The fiber having this photocatalytic activity is a weft,
A woven fabric having a warp density of 130 yarns / inch and a weft yarn density of 40 yarns / inch was manufactured by interweaving both yarns using a polyester bulked yarn as a bulked yarn (Example 1). Further, as the weft, a yarn made of the fiber having the photocatalytic activity is used, and as the warp, a nylon bulky yarn (Example 2), a polyester spun yarn (Comparative Example 1) and the fiber having the photocatalytic activity used for the weft are used. The yarns (Comparative Example 2) were woven and cross-woven to produce woven fabrics under the same conditions as above.

Further, a cross-woven fabric was produced under the same conditions as above using polyester bulked yarn as warp and polyester fiber containing titanium oxide in the fiber by kneading as weft (Example 3). 10 g of each woven fabric sample thus obtained was placed in a 1000 ml Meyer flask, and tobacco (mild seven) was placed therein.
Of smoke was injected. Tobacco smoke was first introduced into a 5-liter Meyer flask with a sidestream smoke of tobacco for 5 seconds, and 1 ml of the cigarette was collected with a syringe, and 1000 ml of this was collected.
Into a Mayer flask. In this state, the fluorescent lamp (2
0W × 3) and left for 12 hours. And the tobacco deodorizing effect at that time was measured by the following four-stage evaluation. 0: No smell 1: I do not know what smell, but it smells a little 2: A weak smell that can distinguish what kind of smell 3: A smell that is clearly noticeable The results are shown in Table 1 together with the warp and weft composition of the fabric. Was. Further, the tear strength (JIS) of each fabric after irradiation with a carbon arc fade meter at a black panel temperature of 63 ° C. for 100 hours was examined. The results are also shown in Table 1.

[0017]

[Table 1] Table 1 shows that the deodorant woven fabric obtained by interweaving the fiber having photocatalytic activity and the bulky processed yarn has high deodorizing performance and excellent tear strength.

Examples 4 to 6 and Comparative Example 3 When spinning an acrylic fiber, a photocatalytic titanium oxide sol (ST-01, manufactured by Ishihara Sangyo Co., Ltd.) was added to the spinning solution at 1% (Comparative Example 3) and 1.5% (Comparative Example). Example 4) 2% (Example 5) and 3% (Example 6) were mixed, and wet spinning was performed according to a conventional method to obtain a fiber having photocatalytic activity. The acetaldehyde deodorizing rate of these fibers upon light irradiation was examined. The results are shown in Table 2. Also, 18-count spun yarns were manufactured using these fibers, and these spun yarns were used as wefts and 250 denier polyester bulked yarns as warps to produce a cross-woven fabric under the same conditions as in Example 1. The deodorizing property of the obtained woven fabric was measured in the same manner as in Example 1, and the results are shown in Table 2.

[0019]

[Table 2] Table 2 shows that the acetaldehyde deodorizing rate of the woven fabric during light irradiation is preferably 80% or more, and more preferably 90% or more.

[0020]

The deodorant woven fabric according to the first aspect has an action of decomposing odorous components attached to the woven fabric, so that the deodorant effect can be maintained semipermanently and is very practical. Claim 2
Since the described deodorizing fabric uses titanium oxide as particles having a photocatalytic action, it can enhance the deodorizing effect by strong oxidizing power. The deodorant woven fabric according to claim 3 uses anatase-type titanium oxide having high photocatalytic activity as the particles having photocatalytic activity, so that the deodorizing effect can be further enhanced. The deodorant woven fabric according to claim 4,
Since a polyacrylonitrile-based synthetic fiber having a small decrease in strength due to self-deterioration due to photocatalysis is used, the deodorizing effect can be further enhanced. Since the photocatalytic sol is applied by a dip nip method in a gel swelling state when the fibers are wet-spun, the deodorizing woven fabric according to claim 5 can sufficiently exhibit a photocatalytic action, has an extremely high deodorizing effect, and is practical. It is something. The deodorizing fabric according to claim 6 can further enhance the deodorizing effect.

Claims (6)

[Claims] 1. A deodorant woven fabric obtained by interweaving a fiber having photocatalytic activity against odorous components in the air and a bulky yarn. 2. The deodorant woven fabric according to claim 1, wherein the fiber having a photocatalytic action contains titanium oxide. 3. The deodorant woven fabric according to claim 2, wherein said titanium oxide is of an anatase type. 4. The deodorant woven fabric according to claim 1, wherein the fiber having photocatalytic activity is a polyacrylonitrile fiber. 5. The fiber according to claim 1, wherein the fiber having photocatalytic activity is obtained by applying a photocatalytic sol in a gel swelling state by a dip nip method when wet spinning a polyacrylonitrile-based fiber. Deodorant fabric. 6. The deodorant woven fabric according to claim 1, wherein the bulky yarn is a polyester fiber.