JPH05222682A - Camouflaged nylon cloth - Google Patents

Abstract

PURPOSE:To obtain the subject cloth having moisture-permeability and waterproofness and undetectable with infrared ray by dyeing a nylon cloth with an acid dye especially having infrared absorbance and applying a camouflaged pattern having discontinuously varying infrared reflectances. CONSTITUTION:A nylon cloth is printed with a printing color paste composed mainly of acid dye, especially dyes having infrared absorbance, e.g. dyes having yellow, orange, green, blue, brown or black color. The printed cloth is heat- treated to develop a camouflaged pattern exhibiting multi-stage infrared reflectances extending from 5% to 60% in the infrared wavelength range of 600-1400nm. A polyurethane resin is applied to a surface of the cloth and the cloth is subjected to water-repelling treatment with a fluorine-based water- repellent to obtain a camouflaged nylon cloth having moisture-permeability and waterproofness and undetectable with infrared ray. A raincoat, etc., hardly detectable with infrared ray can be produced from the cloth.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camouflage-treated nylon cloth which can be suitably applied to a camouflaged rain garment having a camouflage pattern in the infrared region.

[0002]

2. Description of the Related Art Generally, as field disguise for the army, it is necessary to make the colors and patterns of peripheral objects in the area almost the same, but even relatively small items such as camouflage clothes and personal equipment. If you use this to act collectively,
While the slight difference with the surrounding environment is noticeable, the surrounding environment also varies in the visible range.Therefore, conventional clothing such as yellow mud color and national defense color can change the surrounding environment. Camouflage clothing that is difficult to respond to and reduces the contrast with the surroundings is preferable. Camouflage clothes worn by combat units such as the army are given camouflage patterns that take into account the colors and patterns in the visible region of the natural world such as various plants and rocks in the area.

Further, in rainy weather, a raincoat is used as a camouflage garment, but many raincoats are generally called rubberized kappa.

[0004]

However, such a rubberized kappa is liable to cause dew condensation or stuffiness due to perspiration during wearing, which is not only unpleasant for the wearer, but also has a drawback that it hinders activities. In addition, many of the conventional raincoats have camouflage patterns that correspond only to the colors in the visible range under the environmental conditions (plants and rocks) of the forest area in which they are used. According to him, there was a drawback that the camouflage could be easily detected. In particular, an infrared detection method for detecting light rays in the infrared region is known as this detection method or means. However, against this, the camouflage side also needs to protect against this, The point is to bring the infrared reflectance of the environment and the infrared reflectance of clothing close to each other. Flowers in the wavelength range of 600 to 1200 nm,
The reflectance of trees and rocks is as follows.

600 nm 860 nm 1000 nm 1200 nm Flowers 14 52 49 49 Leaves of birch trees 8 90 40 40 Leaves of conifer trees 5 24 25 25 Dry sand 18 23 25 28 Wet sand 9 15 15 15 Rock soil 6 11 13 14

Therefore, when the clothes have an infrared reflectance of less than 5% or more than 60%, the infrared reflectance differs from the natural environment, and although it depends on the detection wavelength region, it is highly likely to be found by infrared detection. The meaning of camouflage disappears. There are various methods for infrared detection, such as infrared filter method, infrared photography method, and infrared night mirror method, and there is a high possibility that a new detection method will be developed. All of these detection methods have been widely used in recent years because they can detect effectively at a long distance and even when fog is applied or at night, etc., and are generally infrared rays of 600 to 860 nm or 1000 to 1200 nm. Detects using infrared rays. To protect against this infrared detection, a camouflage pattern in which the reflectance in the infrared region is changed stepwise by matching with the change in color, pattern, etc. in the visible region is required.

Up to now, there was only one infrared detection method, so the corresponding method is 600 to 860 nm region or 100
Camouflage fabrics have been provided using camouflage, dyes or pigments applied to each individual region of the 0-1200 nm region. However, a camouflage-processed fabric that can cover a wide wavelength range of 600 to 1400 nm has not been generally provided yet, and a raincoat using a nylon fabric has a relatively small infrared absorbing ability of a general acid dye, and therefore, a pigment print of It was handled by applying a camouflage pattern. However, pigments have various problems as compared with dyes. That is, since the pigment particles are larger than the dye particles, the coated surface of the cloth is impaired in smoothness, and the ventilation amount is remarkably reduced, resulting in a large disadvantage. Furthermore, since it is coated with rubber, etc., there is no problem in terms of waterproofing, but the feel of the fabric is rough and heavy, and it has almost no moisture permeability,
The cloth for camouflage rainwear, which has the drawback that it is extremely stuffy when worn, and has a wide range of infrared camouflage that uses a dye mainly composed of a dye for nylon and has good wearing comfort and activity, is still available. Not developed.

[0008]

In view of the present situation, the camouflage-treated nylon cloth of the present invention is dyed at 600 to 14 by dyeing a nylon cloth with a dye mainly composed of an acid dye.
It is characterized in that a camouflage pattern showing a multi-step infrared reflectance of 5% or more and 60% or less in an infrared wavelength region of 00 nm is provided, and one side of the fabric is subjected to a moisture-permeable waterproofing treatment.

The nylon used in the present invention is nylon alone or a combination of nylon and other fibers. As the nylon, nylon 6, nylon 66, nylon 46 and the like are used.

As the nylon fabric, a plain weave such as taffeta, a woven fabric having a modified structure thereof or a structure such as a twill weave is suitable, but not limited to this, knitted fabrics having various structures are used.

The camouflage pattern to be applied to the nylon cloth is divided into finely divided surfaces of the cloth, and the patterns of 2 to 6 colors, preferably 3 to 5 colors are distributed and arranged so as to be dispersed, and dyes having different infrared reflectances. Dyeing is performed by a method such as printing alone or with a mixture of this and an infrared absorbing dye. In addition, you may dye beforehand by dip dyeing before printing.
It is desirable that this pattern form a camouflage pattern even in the visible region.

The dye used is a conventional acid dye,
Of the metal complex dyes and reactive dyes, those having infrared absorption are mainly used. For example, CI Acid Bl
ue 258, 40, 296, 232, 120, 113, 171, CI Acid Gre
en 28, 109, CI Acid Brown 298, 289, CI Acid Black
132, 194, 112, 58, 170, 222, CI Acid Orange 149
And the like are used as the main body for adjusting the infrared reflectance, and it is desirable to mix them with a dye having a camouflage color in the visible region.

The camouflage pattern is formed so as to exhibit a multi-step infrared reflectance of 5% or more and 60% or less in the infrared region of 600 to 1400 nm. Infrared reflectance level is 5-60
It is desirable to have a substantially equal interval over%.

The desired infrared absorptivity is determined by appropriately selecting these dyes. However, since these acid dyes are inferior in infrared absorption to vat dyes and pigments, it may be difficult to set the required infrared reflectance with a dye alone.
In this case, it is desirable to mix an infrared dye with the acid dye. This infrared absorbing dye includes near infrared (6
Some have peak absorption in the range of 0 to 1400 nm), and some have absorption over the entire wavelength range. As those exhibiting partial region absorption, for example, polymethine dyes, phthalocyanine dyes, dithiol dyes, naphthoquinone / anthraquinone dyes, triphenylmethane dyes, aminium diimmonium dyes,
Examples thereof include mercaptonaphthol metal complex salt-based dyes, and organic carbon, carbon-based and inorganic substances exhibit absorption in the entire wavelength region. Since this infrared absorbing dye is difficult to be dyed as it is on the nylon fiber, it is strongly adsorbed on the fiber through the resin binder. Acrylic-based, urethane-based, polyethylene-based, nylon-based resins, etc. are applied to the binder. Since the above infrared absorbing dye is used for the purpose of supplementing the infrared absorbing ability of the dye, it can be used in an extremely small amount compared to the case of the conventional pigment print, so that the fabric is hardly hardened or the air permeability is hardly lowered. ..

In the present invention, the back surface of the nylon cloth having the camouflage pattern is subjected to moisture-permeable waterproofing. As the moisture-permeable and waterproofing resin, a resin that is permeable to water vapor but capable of forming a microporous film that is impermeable to water is used. Specifically, a polyurethane resin obtained by reacting a polyol and an isocyanate compound, a polyamino acid resin which is a copolymer of an amino acid and urethane, an acrylic acid resin such as an acrylic ester, or the like can be used alone or in combination. However, any other resin can be used as long as it is a resin having moisture permeability.

The infrared absorbing dye may be blended with the moisture-permeable waterproofing resin in order to adjust the infrared reflectance. Thereby, the infrared reflectance can be adjusted appropriately.
The desired infrared reflectance can be obtained by selecting a dye, using a dye and an infrared absorbing dye in combination, and blending the infrared absorbing dye with a resin.

These resins are applied to the cloth by various methods. For example, a resin dissolved in a polar organic solvent is directly coated on the cloth using a knife coater, a comma coater, a reverse coater, or a release paper. It can be processed by a so-called laminating method or the like in which it is attached to the above cloth.

As a method for producing a resin film having innumerable pores, a dry film forming method or a wet film forming method can be adopted. For example, a cloth coated with a resin solution is dipped in water to form a resin solution in the resin solution. The water-insoluble resin is solidified to form a resin film having innumerable pores.

After forming the film, a water repellent treatment is carried out if necessary. Known water repellents such as paraffin water repellents, polysiloxane water repellents, and fluorine water repellents may be used, and water repellent treatment may be performed before or after resin processing.

According to the present invention, since it is dyed with a dye mainly composed of an acid dye, the hardness of the texture, the reduction of the air flow rate, the friction fastness and the like, which are the drawbacks of the conventional pigment-printed camouflage clothing, are eliminated. Improved, soft and light, it is possible to obtain a camouflage fabric that is difficult to detect with infrared rays, and since it has a moisture-permeable waterproof treatment, it is possible to obtain a moisture-permeable waterproof rainwear that has both excellent moisture permeability and waterproof performance. This allows the wearer to be active in a comfortable state.

[0021]

EXAMPLES The present invention will be described in detail below with reference to examples.

Example 1 6 nylon long fiber 100% plain weave (taffeta) desizing
Using a smelted and heat-set material, divide this surface into a number of areas and dye it with 4 colors of light green, dark green, brown and black with the following formula so that each color is dispersed without adjoining did.

Light green Acid Blue 40 0.3% Acid Orange 149 0.6% Acid Green 28 0.1% Water 39.0% Printing base paste 60.0%

Dark Green Acid Yellow 127 2.5% Acid Blue 113 0.5% Acid Green 109 0.6% Water 40.1% Printing paste 46.0% PA1001 (manufactured by Mitsui Toatsu) 0.3% (Mercaptonaphthol metal complex salt dye, absorption range 1000- 1700nm) Dexel Clear 3301 10.0% (manufactured by Dainippon Ink and Chemicals)

Tea Acid Orange 149 2.5% Acid Red 266 0.6% Acid Blue 258 0.4% Water 39.2% Printing paste 46.0% Kayasorb IR-750 (Nippon Kayaku Co., Ltd.) 0.5% (aminium dye, absorption range 650-800nm) ) Kayasorb IRG-023 (Nippon Kayaku Co., Ltd.) 0.8% (diimonium dye, absorption range 1000-1200NM) Dexel Clear 3301 10.0%

Black Acid Black 112 4.0% Water 36.0% Printing paste 35.0% Pigment Black 1 5.0% (Aniline black dye: all wavelength absorption) Herizarine Binder UD (BASF) 20.0%

Next, each treatment of high temperature steam, heat treatment, water washing, soaping, water washing and drying was performed. High temperature steam 105 ℃, 20 minutes Heat treatment 150 ℃, 1 minute Soaping anion detergent 2g / l 50 ℃, 20 minutes

Next, a polyurethane resin was coated, treated with water repellency, and finish set. Coating Polyurethane resin (CRISVON AW-7H 90% made by Dainippon Ink and Chemicals) Kayasorb IRG-023 1% Kayasorb IR-750 1% Dimethylformamide 8% Coating was performed by a wet method, and water coagulation / soaping was performed. Water repellent treatment Fluorine repellent emulsion 7% (Asahi Guard 710 manufactured by Asahi Glass Co., Ltd.) Catalyst 1% Heat set 170 ℃, 1 minute

The dye-coated fabric thus obtained exhibited infrared reflectance as shown in FIG. It can be seen that the infrared reflectance is different for each of the four colors, and also different stepwise, and that the camouflage effect is excellent.

Further, this dyed and processed fabric is exposed to sunlight, abrasion,
Each wash fastness was practical. And
Water vapor permeability: 7,000 g / m ² , Water repellency: 80 after 20 washes
That was all. In addition, these measuring methods were performed according to the following methods. Water repellency JIS L-1092 Moisture permeability JIS L-1099 Sunlight fastness JIS L-0842 Friction fastness JIS L-0849 Wash fastness JIS L-0844

Comparative Example 1 After being dyed by printing in four colors in the same manner as in Example 1 with the following prescription using an ordinary acid dye without considering the infrared reflectance, the same processing as in Example 1 was performed.

Light green Acid Blue 40 0.3% Acid Red 118 0.2% Acid Yellow 52 0.8% Water 38.7% Printing paste 60.0%

Dark green Acid Blue 127 1.6% Acid Yellow 52 2.4% Water 36.0% Printing paste 60.0%

Tea Acid Blue 138 1.3% Acid Red 114 0.9% Acid Orange 122 2.7% Water 35.1% Printing paste 60.0%

Black Acid Black 132 7.0% Water 33.0% Printing original paste 60.0%

The dye-coated fabric thus obtained exhibited infrared reflectance as shown in FIG.

Compared to FIG. 1 of Example 1, although there was no great difference in the colors in the visible region of the four colors, the reflectance at 700 nm or higher was high, and the difference between the four colors was also very large. You can see that it is decreasing.

Comparative Example 2 In Example 1, two of the four colors, black and brown, were changed to the following formulation with pigments, dyeing was performed by printing in substantially the same manner, and the same processing as in Example 1 was performed.

Tea Pigment Yellow 12 1.6% Pigment Brown 22 2.0% Pigment Green 7 0.1% Pigment BLack 1 0.3% Herizarine Binder UD 70.0% Reducer 26.0%

Black Pigment Black 7 8.0% Herizarine Binder UD 70.0% Reducer 22.0%

The infrared reflectance of the obtained dyed-coated cloth was almost the same as that of FIG. 1, but the texture of this dyed cloth was hard, and the moisture permeability was 3,000 g / in a place mainly of brown or black. m
^{It was} less than ² / d, and there was a large variation in water vapor transmission rate depending on the location, and the water vapor transmission rate decreased significantly as a whole.

Example 2 6 Nylon filament 100% woven fabric Lip taffeta with desizing
Using scouring / heat-setting, it was divided into three color areas and dyed by printing in three colors of green, brown and black according to the following formulation, and the same processing as in Example 1 was performed. In addition,
A polyamino acid urethane resin was used as the coating resin.

Green Acid Blue 40 0.5% Acid Green 109 0.3% Acid Red 266 0.1% Acid Yellow 135 1.8% Water 38.9% Printing base paste 50.0% Kayasorb IRG-023 0.4% Dexel Clear 3301 8.0%

Tea Acid Brown 289 2.5% Acid Blue 258 0.5% Water 40.0% Printing source paste 40.0% Carbon black fine particles 0.3% Herizarine Binder UD 16.7%

Black Acid Black 58 1.2% Acid Orange 67 0.3% Water 29.2% Printing paste 30.0% Carbon black fine particles 3.8% SIR 114 (Mitsui Toatsu Co., Ltd.) 0.5% (Anthraquinone series, absorption range 600-830nm) Neo sticker PB-3 (Nichika Chemical Co., Ltd.) 35.0%

Coating Polyamino acid urethane resin (PAU) 90% (manufactured by Mitsubishi Kasei) Pigment Green 7 1% Dimethylformamide 9%

The dye-coated cloth thus obtained had a gradual infrared reflectance as shown in FIG.

[0048]

According to the present invention, it is possible to obtain a camouflage-processed fabric having a multi-step camouflage pattern having different infrared reflectances in the range of 600 to 1400 nm. Even with recent methods of infrared detection such as nighttime, it is possible to obtain raincoats that are difficult to detect.

Further, the camouflaged fabric according to the present invention is dyed with a dye mainly composed of an acid dye for nylon and is subjected to a moisture permeable and waterproof treatment, so that it is lightweight, does not damp with sweat, and is excellent in activity. , Water repellency, water resistance and sunlight fastness, friction fastness,
Also excellent in washing fastness.

[Brief description of drawings]

FIG. 1 is an infrared reflection spectrum diagram of four colors of a camouflaged fabric of Example 1.

FIG. 2 is an infrared reflection spectrum diagram of four colors of a camouflaged fabric of Comparative Example 1.

FIG. 3 is an infrared reflection spectrum diagram of three colors of the camouflaged fabric of Example 2.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yoshifumi Wakamatsu 2-3 Chome, Kitamachi, Nerima-ku, Tokyo 17 ─ 206 (72) Inventor Masayuki Togen 20-3 Tokiwadaira Futabacho, Matsudo-shi, Chiba Unitika Matsudosha 5-402 (72) Ikuyama Yamada, Inventor 7-12-1 Fuchimachi, Fukui City, Fukui Prefecture

Claims (1)

[Claims] 1. A nylon cloth is dyed with a dye mainly composed of an acid dye to give a camouflage pattern showing a multi-step infrared reflectance of 5% or more and 60% or less in an infrared wavelength region of 600 to 1400 nm, and the same cloth. Camouflage-treated nylon fabric with moisture-permeable waterproofing on one side