JP2526099Y2 - UV protection fabric - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fabric for preventing ultraviolet rays. More specifically, the present invention relates to an ultraviolet protective fabric for outer garments, which is intended to cut ultraviolet rays, which are considered to have an adverse effect on the skin, before reaching the skin.

[0002]

2. Description of the Related Art Exposing a large amount of ultraviolet rays not only causes skin irritation and accelerates aging but also causes skin cancer in some cases. It is said that.

Conventionally, measures to prevent ultraviolet rays in areas exposed to direct sunlight have been taken with cosmetics and the like. However, in areas where clothes are worn, almost all of them are cut off due to the recognition that clothes cut ultraviolet rays. At present, nothing was done. However, it is empirically known that even when clothes are actually worn, a considerable amount of sunburn is caused by being exposed to sunlight for a long time. Therefore,
When examining the amount of ultraviolet light transmitted through clothing, wearing clothing reduces the amount of ultraviolet light transmitted than not wearing it, but it transmits a significant amount of ultraviolet light in white, light-colored, and medium-colored clothing. It turned out that. In particular, during the period from May to September when ultraviolet rays become strong, white and pale colors,
Often spending with one medium-colored blouse or shirt, considering this fact, it is desirable to take some measures to cut off UV rays on these white, light, and medium-colored outer garments, Actually, no such measures have been taken.

[0004]

An object of the present invention is to make it difficult to transmit ultraviolet light with high durability in a white, light-colored, or medium-colored outer garment that easily transmits ultraviolet light.

[0005]

In order to solve the above problems, the present invention has the following arrangement. That is, a 1.0% owf following dyes, 0.005% owf consists fabric mainly composed of polyester containing 2.0% owf less of the ultraviolet absorber exceeds the, cover factor k ₁ and the cover factor k weft warp of said textile a _second product k ₁ k ₂ is from 300,000 to 2,000,000, blue and / or violet dye 0.000
A UV-repellent fabric characterized by containing more than 01% owf and less than 0.002% owf.

[0006] Outer garments, which are applications of the woven fabric of the present invention, include:
Blouses, shirts, t-shirts, polo shirts, hoodies,
Examples include summer jackets, sportswear, marine wear, skirts, and slacks.

[0007] The UV-repellent fabric of the present invention contains a dye of 1% owf or less. Fabrics having such a dye concentration are white, ultra-light, light-colored, and medium-colored fabrics. In the case of a fabric having a dye concentration of more than 1% owf, the transmittance of ultraviolet light is small, and the necessity of applying the present invention is small. .

In the present invention, the term "ultraviolet light" refers to an electromagnetic wave having a wavelength in the range of 290 to 400 nm, and the effect of the present invention to cut off the ultraviolet light is achieved when the transmittance at 400 nm is less than 5%. Shall be.

[0009] The UV-absorbing fabric of the present invention uses an ultraviolet absorber.
It contains more than 0.005% owf and less than 2.0% owf. When the content of the ultraviolet absorber is 0.005% owf or less, the effect of reducing the amount of ultraviolet transmission is insufficient, and 2.0% owf
Even if an ultraviolet absorber is contained in excess of the above, the effect of reducing the amount of transmitted ultraviolet light is saturated. The amounts of the ultraviolet absorber and the dye used in the present invention are all converted into pure components (active ingredients). As the ultraviolet absorber used in the present invention, phenyl salicylate, p-octylphenyl salicylate, 4-tert-butylphenyl salicylate, salicylic acid derivative, 2,2′-dihydroxybenzophenone, 2,
4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4-dimethoxybenzophenone, 2,2 ', 4,4'-tetrahydroxybenzoquinone, 4-dodecyloxy-2-hydroxybenzophenone , 5-chloro-2-hydroxybenzophenone, 2,4-dibenzoylresorcinol, 4,6-dibenzoylresorcinol, 2-hydroxy-4-oxybenzylbenzophenone, benzotriazole derivative, 2- (2'-hydroxy-3 ' -
tert-butyl-5'-methylphenol) -5'-chlorobenzotriazole, 2- (2'-hydroxy-3 ', 5'-ditert-butylphenol) -5-chlorobenzotriazole, 2- (2'-
(Hydroxy-5'-methylphenol) benzotriazole, substituted acrylonitrile, aromatic ester compounds and the like. Among these, from the viewpoint of effect and durability, preferably, 2- (2′-hydroxy-3′-tert-butyl-5′-methylphenol) -5′-chlorobenzotriazole, 2- (2′-hydroxy -3 ', 5'-ditert-amylphenol) benzotriazole, and more preferably a mixture of both.

As a method for containing these ultraviolet absorbers in the fiber, that is, for exhaustion filling, for example, a fabric to be processed is put into an aqueous solution in which the ultraviolet absorber is dissolved, and
What is necessary is just to process at 30 degreeC for 30 to 60 minutes.

In the present invention, the product k ₁ k ₂ of the cover factor k ₁ of the warp of the woven fabric and the cover factor k ₂ of the weft is used.
Is set to 300,000 to 2,000,000. Here, the cover factor k ₁ of the warp, refers to the product of the square root and warp density of the warp fineness (denier) (present / inch), and the cover factor k ₂ of the weft, and the square root of the weft fineness (denier) It refers to the product of the weft density (book / inch). Their product k
_{If 1} k ₂ is less than 300,000, the amount of ultraviolet light passing through the gaps in the woven fabric increases, and the effect of the ultraviolet absorber exhausted and filled in the fiber is not sufficiently exhibited. On the other hand, if it exceeds 2,000,000, there is no need to exhaustively fill the fiber with an ultraviolet absorber, and there is almost no amount of ultraviolet light transmitted through the woven fabric, so that it is not necessary to apply the present invention.

[0012] The fabric of the present invention has a tendency that the fabric is slightly yellow. Therefore, in order to obtain a whiter fabric, a blue and / or violet dye is used.
More than 0.00001% owf and less than 0.002% owf are dyed on fibers. The blue and violet dyes referred to here are dyes classified into blue and violet, respectively, by a color index. If the concentration of the blue and / or violet dye used is 0.00001% owf or less, the effect of appearing white is not sufficiently exhibited,
On the other hand, when the content is 0.002% owf or more, the fabric is colored blue or violet, which is not preferable.

Further, the blue and / or violet dye used in the present invention is exhaust-filled inside the polyester fiber. Therefore, in addition to 100% of the polyester, the polyester mixed fabric with cotton, rayon, hemp, wool or the like is used. In addition, the effect of blocking ultraviolet rays can be exhibited with good washing durability.

Next, the present invention will be described in detail with reference to embodiments.

[0015]

EXAMPLES The evaluation method of the fabric of the present invention in the examples was as follows.

[Ultraviolet transmittance] Self-recording spectrophotometer U-3400 type (manufactured by Hitachi, Ltd.)
It measured using.

[Judgment of Whiteness] The yellowness (YI value) was measured by a multi-source spectrophotometer manufactured by Suga Test Machine Co., Ltd. A smaller YI value indicates a whiter color. Visual judgment was also used.

(Comparative Example 1) In the final finished state (product), the warp fineness is 50 denier, the weft fineness is 75 denier, the warp density is 241 yarns / inch,
A greige machine made of 100% polyester cloth having a weft density of 97 yarns / inch was subjected to scouring, intermediate setting, alkali weight reduction treatment, etc. by a conventional method, and then a Ciba-Geigy ultraviolet absorber Cibatex LFN (2- (2 '-Hydroxy-3'-tert-
Butyl-5'-methylphenol) -5'-chlorobenzotriazole, 2- (2'-hydroxy-3 ', 5'-ditert-amylphenol) benzotriazole) is dissolved in water 20 times the weight of the dough. And treated at 130 ° C. for 60 minutes.
Subsequent processing of the finishing set and the like was performed by a conventional method. The amount of Cibatex LFN exhausted to the dough was 0.6% owf of the dough weight. Table 1 shows the results.

[0019]

[Table 1]

(Comparative Example 2) [0020] Comparative Example 1 was prepared by changing the amount of Cibatex LFN to 1.75% owf of the weight of the dough. The results are shown in Table 1.

(Comparative Example 3) The woven fabric which had been reduced in alkali in Comparative Example 1 was not treated with the UV absorber Cibatex LFN, and was left as it was (containing no UV absorber at all) as Comparative Example 3.
The results are shown in Table 1.

(Comparative Example 4) [0022] Comparative Example 4 was prepared by changing the amount of Cibatex LFN to 0.005% owf of the dough weight. The results are shown in Table 1.

(Comparative Example 5) A device was prepared in which the Cibatex LFN was changed to 2.00% owf in Comparative Example 1. The results are shown in Table 1.

(Comparative Example 6) In the final finished state (product), a raw fabric of 100% polyester gauze cloth having a warp fineness of 75 denier, a weft fineness of 75 denier, a warp density of 84 threads / inch and a weft density of 38 threads / inch Is subjected to scouring, intermediate set, alkali weight reduction treatment, etc. by a conventional method, and then put into a solution obtained by dissolving Ciba-Geigy ultraviolet absorber Cibatex LFN in water 20 times the weight of the dough, and treated at 130 ° C. for 60 minutes. did. Subsequent processing of the finishing set and the like was performed by a conventional method. The amount of Cibatex LFN exhausted to the dough was 0.6% owf of the dough weight. The results are shown in Table 1.

(Comparative Example 7) The woven fabric subjected to the alkali reduction in Comparative Example 6 was not treated with the UV absorber Cibatex LFN, and was used as it was (containing no UV absorber at all) as Comparative Example 7.
The results are shown in Table 1.

Comparative Example 8 In the final finished state (product), the warp fineness is 420 denier, the weft fineness is 420 denier, and the warp density is 74 yarns / inc.
h, 100% polyester with a weft density of 70 yarns / inch
The dough greige was subjected to scouring, intermediate setting, alkali weight reduction treatment, finishing set, and the like in a conventional manner. Comparative Example 8 was used without treatment with the UV absorber Cibatex LFN and as it was (containing no UV absorber at all). The results are shown in Table 1.

Example 1 When dissolving Cibatex LFN in water whose weight is 20 times the weight of the fabric in the fabric reduced in alkali in Comparative Example 1, Dianix Violet, a dye manufactured by Mitsubishi Kasei, was used. A liquid was prepared by adding 2RE and a conventional dye assistant and leveling agent, and processed. The amount of dye dyed on the fibers was 0.001% owf of the fabric weight. Table 2 shows the results.

[0028]

[Table 2]

(Comparative Example 9) In Example 1, Dianix Violet 2RE was added to a dough having a weight of 0.5%.
The one modified so as to have 00001% owf was produced. The results are shown in Table 2.

(Comparative Example 10) In Example 1, Dianix Violet 2RE was added to a dough having a weight of 0.5%.
002% owf was modified. The results are shown in Table 2.

Example 2 When dissolving Cibatex LFN in water whose weight was 20 times the weight of the fabric in the fabric of Comparative Example 1 in which the alkali-reduced fabric was used, Resoline Red FB, a dye manufactured by Mitsubishi Kasei, and a conventional dye auxiliary were used. And a leveling agent were added to prepare a liquid, which was then processed. The amount of dye dyed on the fibers was 0.025% owf of the fabric weight. Table 3 shows the results.

[0032]

[Table 3]

(Comparative Example 11) In Example 2, a device was prepared in which no Cibatex LFN was added. The results are shown in Table 3.

(Example 3) When dissolving Cibatex LFN in water 20 times the weight of the dough, Dynamix Blue (hereinafter referred to as Mitsubishi Kasei dye) was used in Comparative Example 1 when dissolving the fabric in a reduced alkali.
Dianix Blue) FBL A liquid was prepared by adding a conventional dye assistant and leveling agent, and processed. The amount of dye dyed on the fibers was 0.25% owf of the fabric weight. The results are shown in Table 3.

(Comparative Example 12) In Example 3, a device was prepared in which no Cibatex LFN was added. The results are shown in Table 3.

(Comparative Example 13) When dissolving Cibatex LFN in 20 times the weight of the fabric weight of the fabric whose alkali weight was reduced in Comparative Example 1, Dianix Navy Blue (hereinafter referred to as "Dianix Navy"), a dye manufactured by Mitsubishi Kasei, was used. Blue) and a conventional dye assistant and leveling agent were added to prepare a solution, which was then processed. The amount of dye dyed on the fibers was 1.25% owf of the fabric weight. The results are shown in Table 3.

(Comparative Example 14) In Comparative Example 13, a device was prepared in which no Cibatex LFN was added.

The results are shown in Table 3.

[0039]

[Effects of the Invention] It can be said that the wear of the outer garment made of the ultraviolet light-repellent woven fabric of the present invention can reduce the amount of transmitted ultraviolet light which is considered to have an adverse effect on the skin. This is very preferable from the viewpoint of beauty and health.

[Brief description of the drawings]

FIG. 1 is a view showing an ultraviolet transmittance of a woven fabric obtained in Comparative Example 1.

FIG. 2 is a view showing an ultraviolet transmittance of a woven fabric obtained in Comparative Example 2.

FIG. 3 is a view showing an ultraviolet transmittance of a woven fabric obtained in Comparative Example 3.

FIG. 4 is a view showing an ultraviolet transmittance of a woven fabric obtained in Comparative Example 4.

FIG. 5 is a view showing an ultraviolet transmittance of a woven fabric obtained in Comparative Example 5.

FIG. 6 is a view showing the ultraviolet transmittance of the woven fabric obtained in Comparative Example 6.

FIG. 7 is a view showing an ultraviolet transmittance of a woven fabric obtained in Comparative Example 7.

FIG. 8 is a view showing the ultraviolet transmittance of the woven fabric obtained in Comparative Example 8.

FIG. 9 is a view showing the ultraviolet transmittance of the woven fabric obtained in Example 2.

FIG. 10 is a view showing the ultraviolet transmittance of the woven fabric obtained in Comparative Example 11.

FIG. 11 is a view showing the ultraviolet transmittance of the woven fabric obtained in Example 3.

FIG. 12 is a view showing an ultraviolet transmittance of a woven fabric obtained in Comparative Example 12.

FIG. 13 is a view showing the ultraviolet transmittance of the woven fabric obtained in Comparative Example 13.

FIG. 14 is a view showing the ultraviolet transmittance of the woven fabric obtained in Comparative Example 14.

FIG. 15 is an external view of a blouse as an example of an outer garment made using the woven fabric of the present invention.

[Explanation of symbols]

 1: UV woven fabric of the present invention

Claims (1)

(57) [Scope of request for utility model registration] 1. A dye of 1.0% owf or less and a dye of 0.005% owf or more.
It is composed of a polyester-based woven fabric containing less than 2.0% owf of an ultraviolet absorber, and the product k ₁ k ₂ of the warp cover factor k ₁ and the weft cover factor k ₂ of the woven fabric is
An ultraviolet ray-shielding fabric, comprising 300,000 to 2,000,000 and containing a blue and / or violet dye in an amount of more than 0.00001% owf and less than 0.002% owf.