JP6775115B2 - Cool woven fabric and fabric products made from it - Google Patents

Description

The present invention relates to a cool woven fabric that feels cool when used, and a fabric product constructed by using the woven fabric.

Functional materials have been developed that are mainly used during high temperatures such as summer. For example, Patent Document 1 describes that a cotton cloth is impregnated with a dispersion liquid of fine ceramics such as aluminum nitride fine particles and dried to fix the fine ceramics particles to the cloth, and the fine ceramics are fixed to the cloth. Is described as being used as underwear.

Patent Document 2 describes that an all-weather garment is knitted with a non-breathable hollow yarn made of a synthetic resin such as polyamide. In the present invention, it is said that the hollow thread is expanded or contracted to change the size of the ventilation hole depending on the strength of the injected air pressure, and the heat insulating effect with the outside air is changed.

The invention of Patent Document 3 and the invention of Patent Document 4 are known as woven and knitted fabrics composed of hollow threads. It is said that the false twist hollow multifilament yarn of Patent Document 4 expresses light reflection and refraction by making it hollow to enhance the translucency. Therefore, it is said that the content of fine particles of titanium oxide that functions as a flexible material can be reduced.

Japanese Unexamined Patent Publication No. 6-313267 Jikken Sho 44-25848 Japanese Unexamined Patent Publication No. 52-8170 2016-113714A

As in Patent Document 1 and Patent Document 4, when particles of ceramics or particles such as titanium oxide are fixed to the cloth to improve the functionality of the cloth, the appearance and texture of the cloth are impaired by the fixed functional particles. It may be lost. Further, as in Patent Documents 2 to 4, when the yarn constituting the fabric is made hollow, the functionality is improved such as the transparency is improved. However, the appearance of the fabric may be impaired due to the refraction or reflection of light, which may cause the fabric to become excessively glossy or appear white.

The present invention is a cool woven fabric capable of preventing the appearance of the fabric from being impaired by the functionality while giving the fabric a functionality that makes it feel cool when used, and a cloth composed of the cool woven fabric. The purpose is to provide the product.

A woven fabric composed of ordinary yarn and functional yarn, the functional yarn contains a hollow synthetic resin filament, and contains an infrared reflective material and a thermal conductivity improving material. The above-mentioned problems are solved by a cool woven fabric woven so that the area where the ordinary yarn is exposed is larger than the area where the functional yarn is exposed on one surface of the woven fabric. In this cool woven fabric, the plain yarn is more exposed to the functional yarn on one side of the woven fabric. Therefore, the appearance of the cool woven fabric is not easily spoiled by the functional yarn. On the other hand, it is possible to express a cool feeling with functional threads.

The structure of the woven fabric is preferably a twill weave or a satin weave in which the exposure rate of the ordinary yarn exceeds 50% on one surface of the woven fabric. The exposure rate of the warp or weft is calculated as follows.
Exposure rate of ordinary yarn (%) = exposed area of ordinary yarn / (exposed area of ordinary yarn + exposed area of functional yarn) x 100

It preferably contains at least one natural fiber selected from the group consisting of cotton, hair, hemp, and silk. As a result, it is possible to obtain a woven fabric made of natural fibers that feels cool when used, although the appearance is a cloth made of natural fibers.

The functional yarn is preferably composed of at least one synthetic resin material selected from the group consisting of nylon, polyester, and polyurethane. By using these materials, it is possible to impart quick-drying property to the cool woven fabric.

By sewing a cloth product using the above-mentioned cool woven cloth, it is possible to provide a cloth product that feels cool even at a high time.

According to the present invention, the fabric is composed of a cool woven fabric that can prevent the appearance of the fabric from being impaired by the functionality while giving the fabric a functionality that makes it feel cool when used, and the cool woven fabric. We can provide cloth products.

It is a structure diagram of one side of the cool woven cloth which concerns on one Embodiment of this invention. It is a structure diagram which shows the other side of the cool woven cloth of FIG. It is a structure diagram of one side of the cool woven fabric which concerns on another embodiment of this invention. It is a structure diagram which shows the other side of the cool woven cloth of FIG. It is a structure diagram of one side of the cool woven fabric which concerns on another embodiment of this invention. It is a structure diagram which shows the other side of the cool woven cloth of FIG. It is a structure diagram of one side of the cool woven fabric which concerns on another embodiment of this invention. It is a structure diagram which shows the other side of the cool woven cloth of FIG. It is a structure diagram of one side of the cool woven fabric which concerns on another embodiment of this invention. It is a structure diagram which shows the other side of the cool woven cloth of FIG. It is a drawing which shows the apparatus used for the evaluation test of a cool woven fabric.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The embodiments described below are merely examples, and the present invention is not limited thereto.

The cool woven fabric 1a of the present embodiment is a woven fabric composed of a normal yarn 11a and a functional yarn 12a. More specifically, a normal yarn 11a is used as the warp yarn 13 and a functional yarn 12a is used as the weft yarn 14. As shown in FIGS. 1 and 2, the cool woven fabric 1a has a 3/1 twill weave structure. In FIGS. 1 and 2, the warp threads are shown in black, the weft threads are shown in white, and the same applies to FIGS. 3 to 10.

As shown in the organizational chart of FIG. 1, on one surface of the cool woven fabric 1a, the exposure rate of the ordinary yarn 11a is 75%, and the exposure rate of the functional yarn 12a is 25%. On the other hand, on the other surface of the cool woven fabric 1a, as shown in the organizational chart of FIG. 2, the exposure rate of the ordinary yarn 11a is 25%, and the exposure rate of the functional yarn 12a is 75%. In the cool woven fabric 1a of the present embodiment, as described above, the area where the ordinary yarn 11a is exposed is larger than that of the functional yarn 12a on one surface.

In order to increase the exposed area of the ordinary yarn with respect to the functional yarn on one surface, for example, as shown in the tissue diagrams of FIGS. 3 and 4, it is a type of twill weave 3 /. 1 It may be a torn twill weave. On one surface of the cool feeling structure 1b, the exposure rate of the warp threads 13 (ordinary threads 11b) is 75% as in the case of FIG. 1, and the exposure rate of the weft threads 14 (functional threads 12b) is shown in FIG. As in the case, it is 25%. On the other side, the exposure rate of the warp thread 13 (ordinary thread 11b) is 25%, and the exposure rate of the weft thread 14 (functional thread 12b) is 75%, as in the case of FIG.

In order to increase the exposed area of the ordinary yarn with respect to the functional yarn on one surface, for example, as shown in the tissue diagrams of FIGS. 5 and 6, it is a kind of twill weave 2 /. 1 Twill weave may be used. On one surface of the cool feeling structure 1c, as shown in FIG. 5, the exposure rate of the warp thread 13 (ordinary thread 11c) is 62.5%, and the exposure rate of the weft thread 14 (functional thread 12c) is 37. It is 5%. On the other side, as shown in FIG. 6, the exposure rate of the warp thread 13 (ordinary thread 11c) is 37.5%, and the exposure rate of the weft thread 14 is 62.5%.

In order to increase the exposed area of the ordinary yarn with respect to the functional yarn on one surface, for example, as shown in the structure charts of FIGS. 7 and 8, five yarns, which is a kind of satin weave, are used. It may be satin weave. On one surface of the cool feeling structure 1d, as shown in FIG. 7, the exposure rate of the warp thread 13 (ordinary thread 11d) is 80%, and the exposure rate of the weft thread 14 (functional thread 12d) is 20%. .. On the other side, as shown in FIG. 8, the warp yarn 13 (ordinary yarn 11d) has an exposure rate of 20%, and the weft yarn 14 (functional yarn 12d) has an exposure rate of 80%.

In order to increase the exposed area of the ordinary yarn with respect to the functional yarn on one surface, for example, as shown in the structure charts of FIGS. 9 and 10, eight sheets, which is a kind of satin weave, are used. It may be satin weave. On one surface of the cool feeling structure 1e, as shown in FIG. 9, the exposure rate of the warp thread 13 (ordinary thread 11e) is 87.5%, and the exposure rate of the weft thread 14 (functional thread 12e) is 12. It is 5%. On the other side, the exposure rate of the warp thread 13 (ordinary thread 11e) is 12.5%, and the exposure rate of the weft thread 14 (functional thread 12e) is 87.5%.

As described above, by adopting a twill weave in which the exposure rate of the ordinary yarn exceeds 50% on one surface of the cool woven fabric, or a satin weave in which the exposure rate of the ordinary yarn exceeds 50% on one surface of the cool woven fabric. The area where the ordinary yarn 11 is exposed can be increased with respect to the functional yarn 12 on one surface. When using a cool woven cloth, by using a cloth so that one side of the cool woven cloth is the front side of the product, the appearance looks like a normal woven cloth, but the woven fabric has the functionality of a cool feeling. Cloth can be provided.

For example, when sewing a cloth product such as a garment using the cool woven fabric of the above embodiment, one side of the woven fabric is the front side of the garment and the other side of the woven fabric is the back side of the garment. You can do it. In this way, it is possible to provide a cloth product having a cool feeling functionality while the appearance is a garment using ordinary yarn.

In the above embodiment, as the functional yarn, a hollow synthetic resin filament containing an infrared reflecting material and a heat conductivity improving material was used. For example, the functional yarn can be a twisted yarn obtained by twisting a plurality of hollow synthetic resin filaments. Further, the functional yarn may be a monofilament made of a hollow synthetic resin material.

The synthetic resin material contained in the functional yarn preferably contains at least one synthetic resin material selected from the group consisting of nylon, polyester and polyurethane. Nylon and polyester hardly absorb water and do not absorb moisture, so that the cool woven fabric can be quickly dried. By increasing the quick-drying property, it is possible to prevent stuffiness and further improve the cool feeling. Since polyurethane has excellent elasticity, for example, a polyurethane thread is used as a core material, and a nylon thread or a polyester thread is wound around the polyurethane thread to give the functional thread elasticity. In this case, at least one of the polyester thread, the nylon thread, and the polyurethane thread may be hollow. The polyester yarn, nylon yarn, and polyurethane yarn may be monofilaments or multifilaments.

As the infrared reflector, for example, a material containing a powder of a white pigment can be used. Examples of the white pigment include at least one powder selected from the group consisting of metal oxides, minerals, and inorganic substances. Examples of the metal oxide include titanium dioxide and zinc oxide. As a mineral, for example
White mica can be mentioned. Examples of the inorganic substance include calcium carbonate and barium sulfate. The infrared reflective material may be attached to the functional yarn or kneaded into the functional yarn, for example. By blending the infrared reflector, it is possible to prevent the temperature of the other surface of the woven fabric from rising.

By blending the white pigment, the amount of ultraviolet rays transmitted through the cool woven fabric can be reduced. This makes it possible to prevent sunburn when using a cool woven fabric.

The thermal conductivity improving material contains, for example, at least one powder selected from the group consisting of diamond, silicon nitride, aluminum nitride, silicon carbide, beryllium, alumina, jadeite, aegirine, and cosmochlorite. Can be preferably used. The thermal conductivity improving material may be attached to the functional yarn or kneaded into the functional yarn, for example. By blending the thermal conductivity improving material, it is possible to give a feeling of coldness when the skin touches the cool woven fabric.

In the above embodiment, as the ordinary yarn, an ordinary yarn having no functionality that causes a cool feeling is used. Since ordinary yarn does not contain an infrared reflector, it can be colored in any color other than white by using any dye or pigment. Further, by changing the ordinary yarn, an arbitrary texture and feel can be given to the cool woven fabric. For example, as ordinary yarn, at least one natural fiber selected from the group consisting of cotton, hair, hemp, and silk can be used. This makes it possible to give the woven fabric a function of giving a cool feeling in the same manner as the woven fabric made of natural fibers in appearance and texture.

Since the cool woven fabric of the present embodiment is hollow and has a heat shielding effect, it is difficult for the other surface of the cool woven fabric to heat up even if one surface of the cool woven fabric is heated by sunlight or the like. As a result, the other surface of the cool woven fabric can be given a cool feeling.

In the above embodiment, a normal yarn is used for the warp yarn 13 and a functional yarn is used for the weft yarn 14. The relationship between the warp and the weft may be interchanged. When ordinary yarn is used for the weft and functional yarn is used for the warp, the relationship between the front and back of the surface where the ordinary yarn is more exposed than the functional yarn is exchanged. That is, if a large amount of ordinary yarn is exposed on the front side of the woven fabric in the above embodiment, when a normal yarn is used as the weft and a functional yarn is used as the warp, there are many ordinary yarns on the back side of the woven fabric. Be exposed. In this case, the back side of the woven fabric may be used as one side.

Hereinafter, examples of the present invention will be given and more specifically described.

Using an extruder equipped with a mouthpiece corresponding to a hollow cross section, nylon was melt-spun to obtain a multifilament obtained by twisting a plurality of hollow monofilaments. When the nylon was melted and kneaded, titanium oxide powder and jadeite powder were added.

Polyurethane was dry-spun to obtain a polyurethane multifilament. The above nylon filament was wound around it and heat-set to obtain a functional yarn. This functional yarn was used as a weft, and a cotton yarn obtained by ring spinning was used as a warp to obtain a cool woven fabric of 3/1 twill weave. The cotton thread used was dyed with an indigo dye. The appearance of the cool woven fabric was the same as that of a normal denim fabric woven with white cotton yarn and cotton yarn dyed with indigo. When I pulled this cool woven cloth, it had elasticity.

The above denim cloth and a test cloth (comparative example) prepared for comparison were set in the test apparatus shown in FIG. 11, and the temperature on the back surface of each cloth was measured. The test cloth prepared for comparison is the same as the above cool woven fabric except that the functional yarn of the above cool woven fabric is changed to undyed cotton yarn used as a weft in ordinary denim fabric. is there. The apparatus of FIG. 11 includes a test table 21 made of styrofoam, a frame-shaped sample table 22 having a height of 1 cm and having openings on the flat side and the bottom side, and a thermocouple sensor installed inside the sample table. 25, a blackbody tape 26 arranged on the thermocouple sensor, a ref lamp 23 for taking a picture, and a support portion 24 of the ref lamp 23 are provided. The light source of the ref lamp 23 is an incandescent light bulb. Incandescent light bulbs have poor luminous efficiency, and most of the electric power is emitted as infrared rays or heat.

The measurement conditions were an environment of 20 ° C. and a humidity of 65%, and the distance between the ref lamp 23 and the test table 21 was 30 cm. The ref lamp was turned on with the above-mentioned cool woven cloth 27 and the test cloth 28 (comparative example) prepared for comparison placed on the sample table 22, and the temperature of the back surface of the cloth was changed by a thermocouple for 15 minutes. Was measured. When the measurement was completed, the position of the cool woven cloth 27 and the position of the test cloth 28 prepared for comparison were exchanged, and the measurement was performed again in the same manner. The two measurement positions were averaged and summarized in Table 1.

As shown in Table 1, the cool woven fabric according to the embodiment of the present invention has a maximum temperature difference of 5.4 ° C. as compared with the test fabric according to the comparative example. From this, it can be seen that the temperature of the back side of the cool woven fabric according to the present embodiment does not easily rise even when exposed to sunlight.

Next, when the sliding resistance of the cool woven fabric according to this example was examined by the B method of JIS L 1096, it was 1.9 in the vertical direction and 1.2 in the horizontal direction. From this, it was found that the resistance to slipping was sufficient.

Next, the diffusible residual moisture content of the denim fabric according to this example was investigated. In the test method, the mass (W0) of the test piece is measured in an environment of 20 ° C. and 65% humidity before dropping water. 0.3 ml of water is added dropwise to the test piece, and the mass (W1) is measured. With the test piece suspended, the mass (W2) for each elapsed time is measured. The diffusible residual water content is calculated by the following formula. The results are shown in Table 2.
Diffusible residual water content (%) = (W2-W0) x 100 / (W1-W0)

As shown in Table 2, in the denim fabric according to this example, the diffusible residual moisture content became 0% in about 70 minutes. From this, it can be seen that the cool woven fabric according to the present embodiment dries quickly even if it gets wet with sweat or the like.

Next, the cool contact sensitivities of the cool woven fabric according to this example were investigated. As a test method, measurement was performed with a temperature difference of 10 ° C. using a measuring device (Thermorabo II) manufactured by Kato Tech. As a result, the thermal conductivity of the denim fabric according to this example was 0.124 W / cm ² . From this, it was found that the denim fabric according to the present embodiment has a cool contact feeling.

Next, the ultraviolet shielding rate of the cool woven fabric according to this example was investigated. The test method was based on AS / NZS 4399: 1996. The measurement wavelength is 290-400 nm. As a result, the transmittance of ultraviolet rays in the cool woven fabric according to this example was 0.05% for both ultraviolet A wave and ultraviolet B, and the UPF evaluation was 50 plus (excellent evaluation). From this, it was found that the denim fabric according to this example has an excellent ultraviolet shielding rate.

Next, jeans pants were produced using the denim fabric according to this example. I wore these jeans pants and evaluated the sensitivity. When I passed it through my legs, I felt a cool touch and felt cool. When I put on these jeans pants and moved to a place exposed to sunlight in the summer, I felt clearly cooler than the conventional jeans pants woven with cotton threads for both the warp and weft threads. In the conventional jeans pants, there was a feeling that the part exposed to sunlight was heated, but in the jeans pants using the cool woven fabric according to the present embodiment, there was no feeling of being heated in that way.

The above embodiment relates to a denim fabric. The use of the cool woven fabric of the present invention is not limited to denim fabric, for example, fabrics for clothes such as pajamas, work clothes, and casual clothes, bedding fabrics such as sheets and pillowcases, and decorative fabrics such as wristbands. , It can be suitably used as a cloth for cloth products that require a cool feeling, such as a cloth for a support tool such as a supporter.

13 Warp 14 Weft 1a Cool woven fabric 11a Ordinary yarn 12a Functional yarn 1b Cool woven fabric 11b Ordinary yarn 12b Functional yarn 1c Cool woven fabric 11c Ordinary yarn 12c Functional yarn 1d Cool woven fabric 11d Ordinary yarn 12d Functional yarn 1e Cool feeling Woven cloth 11e Ordinary thread 12e Functional thread

Claims (5)

A woven fabric composed of ordinary yarn and functional yarn.
The functional yarn contains a hollow synthetic resin filament, and contains an infrared reflector and a heat conductivity improving material.
A cool woven fabric woven so that the area where normal yarn is exposed is larger than the area where functional yarn is exposed on one surface of the woven fabric. The cool woven fabric according to claim 1, wherein the structure of the woven fabric is a twill weave or a satin weave in which the exposure rate of ordinary yarn exceeds 50% on one surface of the woven fabric. The cool woven fabric according to claim 1 or 2, wherein the ordinary yarn contains at least one natural fiber selected from the group consisting of cotton, hair, hemp, and silk. The cool woven fabric according to any one of claims 1 to 3, wherein the functional yarn contains at least one synthetic resin material selected from the group consisting of nylon, polyester, and polyurethane. A cloth product made of the cool woven cloth according to any one of claims 1 to 4.

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