JP2948356B2 - Cool fiber fabric - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a cool sensation fiber fabric that releases heat generated from the human body to the outside of a garment, and has an excellent cool sensation that combines the ability to block sunlight and suppress a rise in temperature in the garment. The present invention relates to a cool fiber fabric.

[0002]

2. Description of the Related Art Various methods for producing fiber fabrics having a cool feeling have been proposed. For example, a method of using a high water absorption fiber such as rayon or cotton on the skin side to release sweat generated from the human body to the outside of the clothes, a method of using a high twist yarn on the skin side to reduce the area in contact with the human body, or There is a method in which a fiber having a high thermal conductivity is used on the skin side, or a resin containing a substance having a high thermal conductivity is printed on the back surface of the fiber cloth, thereby removing body heat and releasing the heat outside the body. However, with the above method, excellent cooling sensation cannot be obtained. Especially when a substance having high thermal conductivity is used, although the effect of releasing body heat is slightly recognized, the temperature inside the clothes rises due to the absorption of sunlight. Had the disadvantage of doing so.

[0003] Further, as a method of producing a cool sensible fiber cloth for shielding sunlight, there have been conventionally a method of reflecting aluminum light by vapor-depositing aluminum on the surface of the fiber cloth, and a method of kneading titanium oxide into a fiber to mix sunlight. A method of reflecting visible light inside has been proposed. However, these methods cannot reflect 100% of sunlight, and there is a problem that partially absorbed light energy is converted into heat energy and the temperature in clothes increases.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has a cooling sensation fiber cloth capable of releasing heat generated from the human body to the outside of clothes. An object of the present invention is to obtain a cool fiber fabric having excellent cool sensation and also having low performance.

[0005]

The present invention attains the above object and has the following constitution. That is, the first invention of the present application relates to a "cool fabric having a heat radiation layer for releasing heat generated from the human body to the outside on the surface of the fiber fabric, wherein the air permeability is 5 cc / cm ² · sec or more. A second aspect of the present invention relates to a fabric having a heat radiation layer for releasing heat generated from the human body to the outside on the surface of the fiber fabric and a solar reflective layer on the back surface, and having a gas permeability of 5 cc / cm. ²・ s
The cool feeling fiber cloth characterized by being at least ec or more ”.

Hereinafter, the present invention will be described in detail. Examples of the fiber fabric used in the present invention include polyamide synthetic fibers such as nylon 6 and nylon 66, polyester synthetic fibers such as polyethylene terephthalate, polyacrylonitrile synthetic fibers, polyvinyl alcohol synthetic fibers, and triacetate. Synthetic fiber, recycled fiber such as rayon, natural fiber such as cotton and hemp, or nylon 6 /
A woven fabric, a knitted fabric, a nonwoven fabric, etc. composed of a blend fiber of cotton, polyethylene terephthalate / cotton and the like can be given.

The characteristics of the cool fiber fabric of the present invention are as follows:
Another feature is that a heat radiating layer for releasing heat generated from the human body to the outside of the clothes is provided on the surface of the fiber cloth. The heat radiation layer referred to here is a layer containing a substance that radiates heat (having a wavelength of about 10 μm) generated from the human body and has a property that the temperature is hardly increased by irradiation with sunlight. Examples of the substance having the above characteristics include alumina, aluminum titanate, cordierite, β-spoyumen and the like.

A second feature of the cool fiber fabric of the present invention is that the fabric has air permeability of 5 cc / cm ² · sec or more. If the air permeability is less than 5 cc / cm ² · sec, sweat generated from the human body cannot be released to the outside of the clothes, and the person feels stuffy. This air permeability needs to be 5 cc / cm ² · sec or more.
/ Cm ² · sec or more provides an ideal cool feeling. In order to make the air permeability of the cool feeling fiber cloth 5 cc / cm ² · sec or more, the density of the fiber cloth may be controlled, and in general, the woven density, knitting density, and nonwoven fabric are adjusted according to the fineness of the fiber used. The degree of fiber entanglement may be adjusted by a known method, and is not particularly limited in the present invention.

Further, a feature of the cool fiber fabric of the second invention of the present application resides in that a sunlight reflecting layer is provided on the back surface of the fiber fabric. The sunlight reflecting layer referred to here is a layer containing a substance having a property of reflecting near-infrared rays at least in the range of 0.78 to 3 μm in the wavelengths contained in sunlight.
Examples of the substance having a property of reflecting near infrared rays include aluminum, stainless steel, gold, silver, indium tin oxide, and zinc sulfide.

In order to form the above-mentioned heat radiation layer and sunlight reflection layer on the front and back surfaces of the fiber cloth, respectively, a vapor deposition method, a sputtering method, a method of printing a resin containing the above substance, or a polymer such as polyamide or polyester is used. A known method such as a method of forming a fabric using a yarn spun by melting and mixing the above substances may be used. The thickness of each layer and the content of the substance to be contained when forming the heat radiation layer and the sunlight reflection layer on the front surface and the back surface of the fiber cloth, respectively, may be appropriately determined according to the required performance, and are not particularly limited.

When a heat radiation layer is formed on the surface of a fabric such as a woven fabric or a knitted fabric using a yarn obtained by melting and mixing the above-mentioned heat radiation material and a polymer such as polyamide or polyester, a part of the heat radiation layer is formed of a fiber cloth. It may be on the back, but in this case,
It is desirable that the heat radiation layer existing on the back surface of the fiber fabric is 30% or less of the area of the back surface of the fiber fabric.

The present invention has the above-mentioned constitution, and according to the present invention, a fiber cloth having excellent cool feeling can be obtained.

[0013]

The present inventors have considered the reason why the cool fiber fabric of the present invention has a high degree of cool feeling as follows.

When a heat radiation layer is formed on the surface of the fiber cloth as in the cool feeling fiber cloth of the present invention, the heat generated by the human body is absorbed by the fiber cloth and transferred to the heat radiation layer, and then the clothes are radiated by the heat radiation substance. Released outside. Moreover, when the air permeability is set to 5 cc / cm ² · sec or more as in the cool-sensation fiber cloth of the present invention, it also has an effect of removing sweat and heat generated from the human body to the outside of the clothes, and has the above-mentioned heat dissipation effect. Due to the synergistic effect of, excellent coolness will be exhibited.

Further, if a solar reflective layer is formed on the back surface of the fiber cloth, the intensity of sunlight applied to the solar reflective surface of the cloth obtained by applying the solar reflective material to the surface of the fiber cloth can be reduced by one. In this case, the intensity of sunlight radiated to the sunlight reflecting layer of the cool fiber fabric of the present invention is reduced to 0.05 to 0.4 because sunlight is absorbed on the surface of the fiber fabric.
Therefore, comparing the case where a substance having the same reflectance is formed on the front surface of the fiber cloth and the case where it is formed on the back surface of the fiber cloth, the amount of sunlight energy to be reflected is
It is much smaller when formed on the back surface of the fiber fabric, and even if a part of sunlight is absorbed, the amount converted to heat energy is smaller when formed on the back surface of the fiber fabric. Since the fabric is much smaller, the fabric having the solar reflective layer on the back surface has excellent cool sensation, and exhibits excellent cool sensation due to the synergistic effect of the above-described heat radiation effect and solar reflective effect.

[0016]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples. The measurement and evaluation of the performance of the fiber cloth in the examples were performed by the following methods. (1) Heat dissipation A sample is placed in a room at a constant temperature and humidity of 30 ° C and a humidity of 60% so that the back side of the fiber cloth is overlapped on a hot plate kept at 50 ° C, and the surface of the fiber cloth is left for 10 minutes. The temperature was measured with a thermoviewer (an infrared sensor manufactured by JEOL Ltd.).

(2) Light Shielding Property A temperature measuring device as shown in the side sectional view in FIG. 1 is installed in a constant temperature and humidity room at a temperature of 30 ° C. and a humidity of 60%. Using a white light source 1, a fiber fabric 2 to be measured at a position 60 cm from the light source 1
When the white light is irradiated on the surface of the cloth 10 for 10 minutes, the black polyester cloth 4
The temperature was measured by the temperature sensor 3 in front of the above, and the light shielding property of the fiber cloth 2 was evaluated. (3) Air permeability According to JIS L-1018.

Example 1 First, polyester fibers 75d / 36f were used for both the warp and the weft.
A plain woven fabric (taffeta) having a used warp density of 110 yarns / inch and a weft yarn density of 80 yarns / inch was prepared, scoured, dried and preset by a usual method, and then dyed with a fluorescent whitening agent. Subsequently, an intermediate setting was performed. Next, a heat-radiating substance-containing resin having the following formula 1 is printed on the surface of the above-mentioned fiber cloth by a flat screen (lattice pattern, opening ratio: 40%), dried and finished set to obtain a cool feeling fiber cloth of the present invention. Was.

[Prescription 1] Aluminum titanate 10 parts by weight (heat dissipation material, manufactured by Osaka Cement Co., Ltd.) DEXCEL CLEAR 5100 84 parts by weight (printing binder, manufactured by Dainippon Ink and Chemicals, Inc.) Water 5 parts by weight DEXCEL AGENT 2K 1 part by weight (Cross-linking agent for binders, manufactured by Dainippon Ink and Chemicals, Inc.)

For comparison with the present invention, a fiber fabric for comparison (referred to as Comparative Example 1) was obtained in exactly the same manner as in this example, except that the step of printing the heat radiation material was omitted in this example. . In addition, a fiber cloth for comparison (referred to as Comparative Example 2) was obtained in exactly the same manner as in this example, except that a heat radiation material was printed on the back surface of the fiber cloth in place of the front surface of the fiber cloth in this embodiment. .

The performances of the present invention and the comparative fiber cloth obtained as described above were measured, and the results are shown in Table 1.

[0022]

[Table 1]

As is clear from Table 1, the fiber cloth of the present invention has a high heat radiation property while having a light shielding property equivalent to that of the cloth of the comparative example, and has an excellent cool feeling.

Examples 2-3 Relative values measured at 25 ° C. at a concentration of 0.5 g / 100 ml in a solvent of phenol / tetrachloroethane (1/1) and 5 parts by weight of alumina having a mean particle diameter of 0.8 μm as a heat-radiating substance. A composition obtained by melting and mixing 95 parts by weight of polyethylene terephthalate having a viscosity ηrel of 1.30 was mixed at a spinning temperature of 260 ° C.
At a speed of 0 m / min.
Stretched at 0 ° C, stretch ratio 1.5 times, heat treatment temperature 160 ° C,
Heat treatment was performed to obtain a multifilament yarn A having a fineness of 75d / 36f.

Next, an average particle size of 1
A composition obtained by melting and mixing 5 parts by weight of zinc sulfide having a particle diameter of 5 μm and 95 parts by weight of polyethylene terephthalate having a relative viscosity of ηrel 1.30 is taken out at a spinning temperature of 260 ° C. and a speed of 3000 m / min. 1.5 magnification
Twice, stretched and heat-treated at a heat treatment temperature of 160 ° C, and a fineness of 75
A multifilament yarn B of d / 36f was obtained.

Here, using a JIL-7 type double-nit machine (made by Fukuhara Seiki Co., Ltd .; pot diameter 30 inches, 22 gauge, 56 feeder), the first F (feeder) and the second F are used according to the knitting diagram of FIG. , The fineness of 75d /
A tacky reversible knitted fabric was knitted by supplying a regular polyester multifilament yarn of 36f and a multifilament yarn A to the third and sixth floors, respectively.

Further, the multifilament yarn B is supplied to the first F and the fourth F, and the same fineness 7 is supplied to the second F and the fifth F.
The 5d / 36f regular polyester multifilament yarn was supplied, and the multifilament yarn A was supplied to the third and sixth floors, respectively, to knit a tack reversible knitted fabric.

The knitted fabric obtained as described above is subjected to opening, scouring, drying and presetting in the usual manner, followed by dyeing with a fluorescent whitening agent and finishing setting to give the fiber fabric a surface. Cooling fiber fabric of the present invention having a heat radiating layer (referred to as Example 2) and cooling fiber fabric of the present invention having a heat radiating layer on the surface of the fiber fabric and a sunlight reflecting layer on the back surface of the fiber fabric (Example 2) 3) was obtained.

For comparison with the present invention, when knitting a tack reversible knitted fabric in Example 2, the same method as in Example 2 was adopted except that the multifilament yarn supplied to each feeder was changed as shown in Table 2. As a result, 5 points of fiber cloths for comparison (comparative examples 3 to 7) were obtained.

[0030]

[Table 2]

The performances of the present invention and the comparative fiber cloth obtained as described above were measured, and the results are shown in Table 3.

[0032]

[Table 3]

As is apparent from Table 3, the fiber cloth according to Example 2 of the present invention has high heat dissipation and excellent cool feeling while having the same light shielding property as the cloth of Comparative Example. I understand. Further, when the solar reflective layer is provided on the back surface of the fabric as in the fiber fabric of Example 3, the heat dissipation is higher than that of the fabric of the comparative example, the light shielding property is lower, and the coolness is excellent. You can see that it is doing.

Example 4 First, both the warp and the weft are made of polyester fiber 75d / 36f.
A plain woven fabric (taffeta) with a used warp density of 110 yarns / inch and a weft density of 80 yarns / inch was prepared, scoured, dried, and pre-set in the usual manner, and then dyed gray with a disperse dye. Subsequently, an intermediate setting was performed.

Next, aluminum was heated and evaporated in a vacuum by a vacuum evaporation apparatus using aluminum as a solar reflective material, and aluminum was directly evaporated to a thickness of 500 mm on the back surface of the fiber cloth.

Further, a heat-radiating substance-containing resin having the following formula 1 was printed on the surface of the above-mentioned fiber cloth by a flat screen (lattice pattern, open area ratio: 40%), dried and finished set. I got

[Prescription 1] 10 parts by weight of aluminum titanate (heat release material, manufactured by Osaka Cement Co., Ltd.) 84 parts by weight of DEXCEL CLEAR 5100 (manufactured by Dainippon Ink and Chemicals, Inc.) 5 parts by weight of water 1 part by weight of DEXCEL AGENT 2K Department (made by Dainippon Ink and Chemicals, Inc.)

For comparison with the present invention, a fiber fabric for comparison (Comparative Example 8) was prepared in exactly the same manner as in this example except that the step of evaporating aluminum and the step of printing a heat radiation material were omitted in this example. And).

Further, in this embodiment, aluminum vapor deposition is performed on the surface of the fiber cloth instead of the back surface of the fiber cloth, and a heat radiation material is printed on the back surface of the fiber cloth instead of the surface of the fiber cloth. A fiber fabric for comparison (referred to as Comparative Example 9) was obtained in exactly the same manner as in the example.

The performances of the present invention and the comparative fiber cloth obtained as described above were measured, and the results are shown in Table 4.

[0041]

[Table 4]

As is clear from Table 3, the fiber fabric of the present invention has excellent coolness.

[0043]

According to the present invention, a fiber fabric having good cool feeling can be obtained.

[Brief description of the drawings]

FIG. 1 shows an example of a knitting diagram used for producing the cool fiber fabric of the present invention.

FIG. 2 is a side sectional view of a main part of an apparatus for evaluating the light shielding property of a cool fiber fabric of the present invention.

[Explanation of symbols]

Reference Signs List 1 100 W white light source for photography 2 Fiber fabric of the present invention 3 Temperature sensor 4 Black dyed polyester fabric (75 for both warp and weft)
d / 36f, warp density 110 yarns / inch, weft density 80
Book / inch) 5 20mm thick expanded polystyrene

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ identification code FI D04B 1/16 D04B 1/16 D06M 11/83 D06M 11/00 C (58) Investigated field (Int.Cl. ⁶ , DB name ) D06M 11/36-11/49 D06M 11/83 D04B 1 / 00,1 / 16

Claims (2)

(57) [Claims] 1. A cooling fiber fabric having a heat radiation layer on the surface of the fiber fabric for releasing heat generated from the human body to the outside, wherein the air permeability is 5 cc / cm ² · sec or more. 2. A fabric having a heat radiation layer for releasing heat generated from the human body to the outside on the surface of the fiber cloth and a sunlight reflecting layer on the back side, wherein the air permeability is 5 cc / cm ² · sec or more. A cool fiber fabric characterized by the following.