JP2003262498A - Camouflaged clothes - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a camouflaged clothes having superior camouflage performance to infrared rays. <P>SOLUTION: The camouflaged clothes are constituted by joining a plurality of pieces, which comprise sheets formed by stacking metal thin-film layers and colorant containing resin camouflage layers, at least, on one surfaces, with a lining. The clothes are characterized in that heat reflecting factors on the surface of the clothes are distributed in multiple stages. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camouflage garment having excellent camouflage properties for visible light, near infrared light and far infrared light.

[0002]

2. Description of the Related Art Conventionally, various camouflage materials for visible light and near infrared rays have been proposed as equipment for field battles, which correspond to natural environments such as forests and grasslands. That is, how to minimize the contrast between field equipment and the natural environment.
Infrared photography, which uses infrared rays of 0 to 1400 nm for detection, and methods corresponding to infrared nighttime monitoring methods and the like. For example, Japanese Patent Application Laid-Open No. 2-154084 discloses a method of adding a vat dye to a vinylon woven fabric and performing a camouflage print having three-step infrared reflectance, and Japanese Patent Application Laid-Open No.
Japanese Patent No. 60496 discloses a camouflage-processed fabric having a dye coloring region and a water-insoluble pigment coloring region for each color and imparting a waterproof and moisture-permeable performance, and in Japanese Patent Laid-Open No. 522682/1993, an acidic dye is often used. A camouflage-processed nylon cloth having a camouflage pattern having a graded infrared reflectance has been proposed.

[0003]

However, the camouflage fabrics obtained by these conventional techniques have colors and patterns and near-infrared reflectance that are in harmony with the natural environment such as forests and grasslands, and are visible and near-infrared rays. The camouflage effect was observed in the wavelength region, but the camouflage effect was not observed in the wavelength region of 8 to 14 μm, that is, the far infrared region.

In view of the drawbacks of the prior art, the present invention has been made.
It is intended to provide a camouflaged garment having an excellent camouflage property for far infrared rays.

[0005]

The present invention employs the following means in order to solve the above problems. That is, the camouflage clothing of the present invention, on at least one side,
A garment formed by joining a large number of pieces composed of a sheet in which a metal thin film layer and a colorant-containing resin layer for camouflage are laminated to a lining, and the thermal emissivity of the surface of the garment has multiple levels. It is characterized by being distributed in.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has been earnestly studied to provide a camouflage garment having excellent camouflage properties in a natural environment. As a result, a large number of specific thin film layers of a camouflage colorant-containing resin layer were laminated. It has been found that such a problem can be solved by joining such a piece to a lining and distributing the thermal emissivity of the surface of the garment in multiple stages. The term "multi-stage distribution" as used herein means that a large number of regions having different thermal emissivities are distributed on the surface of the garment.

The piece referred to in the present invention is composed of a sheet in which a metal thin film layer and a colorant-containing resin layer for camouflage are laminated on at least one surface.

The sheet is made of a sheet material such as a cloth and a film, and the cloth is particularly preferably used. The material constituting such a cloth is not particularly limited, but for example, nylon 6, nylon 6,
6, Nylon 12, Nylon 4.6, polyamide fiber composed of nylon 6 and nylon 6 and 6 copolymerized polyamide, etc., homopolyester such as polyethylene terephthalate and polybutylene terephthalate, constituting a repeating unit of polyester Typical examples include polyester fiber made of copolyester obtained by copolymerizing an acid component with an aliphatic dicarboxylic acid such as 5-sodium sulfoisophthalic acid or adipic acid, polyparaphenylene terephthalamide, and polymetaphenylene isophthalamide. Aramid fiber,
A synthetic fiber such as a cellulosic fiber, a polyvinyl alcohol fiber, a sulfone fiber, an ultrahigh molecular weight polyethylene fiber, or a natural fiber is used. Preferably synthetic fibers are used.

The fiber may contain various additives which are usually used for improving the productivity or the characteristics in the manufacturing process and the processing process of the raw yarn. For example, a heat stabilizer, an antioxidant, a light stabilizer, a leveling agent, an antistatic agent, a plasticizer, a flame retardant and the like can be contained.

The form of the cloth is not particularly limited, and for example, woven fabric, knitted fabric, and non-woven fabric are appropriately used.
A woven fabric is preferably used in terms of light weight and thickness. The fineness of the yarns constituting the woven fabric is 40 to 170 dt.
ex is preferred. Further, as such a fabric, it is preferable that the limiting oxygen index measured based on JIS K7201 method is 25 or more from the viewpoint of flame retardancy. Such a cloth can be obtained, for example, by dipping the cloth with a resin containing a phosphorus compound or a bromine compound, heat treatment or coating treatment, or adding the same compound to the raw yarn manufacturing stage.

The basis weight of the sheet constituting the piece of the present invention is preferably 50 to 200 g / m ² . If the unit weight is larger than necessary, the wearability is deteriorated, which is not preferable.

The shape of the piece of the present invention is not particularly limited, but a leaf shape is preferable because it naturally mixes, and the area of the piece is preferably 10 to 500 cm ² . If necessary, leaf-shaped pieces having different areas can be combined.

The metal thin film layer referred to in the present invention is laminated on the above-mentioned sheet in the form of a foil. A foil prepared by a rolling method may be adhered with an adhesive, but a vapor deposition method, The sheet may be coated by a film forming method such as a plating method or a sputtering method. Further, regarding the vapor deposition method, it is possible to once form metal by vapor-depositing a metal on another sheet, for example, a film, and then transferring the metal thin film layer onto a cloth via an adhesive to form it. As the metal, gold, silver, copper, aluminum, nickel, chromium, iron, zinc, lead and the like, and alloys thereof are used, but aluminum is preferably used from the viewpoint of performance and lightness. When the metal thin film layer is formed on the cloth, it is preferable to use a cloth which has been subjected to a heat calendar and a hot press in advance to have a flat surface. The thickness of the metal thin film layer is preferably 200 to 1000 angstrom.

The term "camouflage colorant-containing resin" as used in the present invention imparts camouflage properties to visible light and near-infrared rays, and includes polypropylene resin, vinyl acetate resin, vinyl chloride resin, acrylic resin, urethane resin. Etc. and a synthetic resin containing these modified resins containing a camouflage colorant is used. As the camouflage colorant, a commonly used camouflage pigment or dye can be used. In particular, the pigment may be an inorganic pigment or an organic pigment. For example, as the camouflage colorant, pigments such as light green, dark green, brown, and black corresponding to a shaded portion having a hue and near-infrared reflectance that are in harmony with the natural environment such as trees, grass, and soil can be used. . The camouflage colorant-containing resin is applied to the surface of the thin metal layer by a printing method, a coating method, a spray method, a printing method, or the like.

A fake dress is made by joining a number of pieces thus obtained, each of which is composed of a sheet in which a metal thin film layer and a colorant-containing resin layer for camouflage are laminated on at least one side, to make a fake dress. It is important that the thermal emissivity at is distributed in multiple stages. That is, as a region of the thermal emissivity preferable in the present invention, the thermal emissivity of the piece is 0.40 in terms of the thermal radiation of the natural environment such as forests and grasslands.
Distributed within the range of 0.90, the maximum and minimum values are 0.05 or more, and the average thermal emissivity obtained from the distribution ratio of the pieces used is 0.50 to 0.70. It even more effectively disguises far infrared rays. The control of the thermal emissivity can be adjusted by the film thickness of the colorant-containing resin layer for camouflage. Although it varies depending on the fineness of the yarn, the woven structure, and the woven density, it can usually be adjusted with a film thickness of 5 to 30 μm.

On the other hand, the lining referred to in the present invention is a cloth for joining the pieces to a camouflage pattern-like, and usually a plain woven fabric made of polyester fiber or polyamide fiber is preferably used from the viewpoint of lightness and thickness. . The fineness of the yarn constituting the lining is preferably 34 to 78 dtex. In addition, a mesh-like woven fabric or a mesh-like knitted fabric can be appropriately used in terms of breathability. If necessary, a double Russell cloth or the like can be used as a cushioning material. The joining of the pieces is not particularly limited, but stitching with a sewing thread, joining with a heat welding tape, or the like is preferably used. When joining the piece to the lining, the periphery of the piece may be joined completely, but it is preferable to join the central portion of the piece to the lining so that the piece does not bend, in harmony with the natural environment. Further, in order to suppress the heat generated from the body, a heat insulating material can be used together with the lining. The camouflaged clothing includes a jacket, pants, a face cover, and the like.

Next, the camouflaged clothing of the present invention will be described with reference to the drawings. First, FIG. 1 is a schematic diagram showing an example of the structure of a camouflage garment of the present invention, in which a light green-colored piece 2, a dark green-colored piece 3, a brown-colored piece 4, and a black-colored piece 5 are sewn on a lining 1 It is constructed by stitching with.

[0018]

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

The characteristics in the examples were obtained by the following methods. (1) Camouflage Wearing camouflaged clothing, the camouflage was observed against the background of the forest for judgment.

[0020] Difficult to identify ◎ Somewhat difficult to identify ○ There is a camouflage effect △ Easy to identify × A. Visible light region It was visually judged.

B. Photographs were made by the near-infrared region infrared photography (camera was equipped with an infrared filter), and the photographs were observed and judged.

C. Far-infrared region detection wavelength of 8 ~ 14μm using an infrared imaging device, 100
It was observed and judged from the distance of m. (2) Use the sheet that makes up the thermal emissivity piece as a D and S AERD thermal emissivity meter (Dev
ices Servicens). (3) Oxygen index Measured based on JIS K7201 method.

Example 1 A plain woven fabric having a fineness of 167 dtex and a basis weight of 158 g / m ² made of polyester fiber having 30 filaments was scoured.
Heat set. Next, this plain woven fabric was heated at 135 ° C for 25t.
One-sided calendering was performed, and a 500 angstrom aluminum vapor deposition film vapor-deposited on a polyester film was transferred to the calendered surface via a polyester adhesive. After that, the aluminum vapor-deposited film surface was coated with a vinyl chloride / vinyl acetate copolymer resin containing 30 parts of a light green pigment similar to that of the forest with a doctor knife to a coating amount of 7.5 g / m ^2. gave. Similarly, dark green pigments, brown pigments, and black pigments were processed. Each coating amount is 10.5
^{g / m 2, 13.5g / m} 2, it was 14.0 g / m ^2. 150 cm ² , 225 cm ² , 30
It was cut into 0 cm ² leaf-shaped pieces. On the other hand, fineness 56
A 0D color ripstop fabric having a basis weight of 58 g / m ² made of polyamide fiber having dtex and 24 filaments was used as a lining and sewn into a clothing shape. Then, on this lining, leaf-shaped pieces of four colors having different coating amounts were applied as shown in FIG.
As described above, the cloth was sewn with a polyester thread of No. 50 to produce a camouflaged garment.

The characteristics of the thus obtained camouflaged clothing are shown in Table 1. The camouflage clothing of the present invention has a thermal emissivity of 0.52 to
It consisted of many pieces in the range of 0.85, and as a result of observation with a far-infrared imaging device, it was in harmony with the background (forest), the image contrast was small, and shape identification was difficult. Also,
The camouflage was also excellent in the visible light and near-infrared regions.

Comparative Example 1 A basis weight 158 made of the same polyester fiber as in Example 1
A plain weave of g / m ² was scoured and heat set. Then, this plain fabric was subjected to single-side calendering of 25 tons at 135 ° C. Then, as in Example 1, the calendered surface was coated with a doctor knife using a vinyl chloride / vinyl acetate copolymer resin containing light green, dark green, brown, and black pigments similar to those in the forest, respectively. After that, it was cut into leaf-shaped pieces. Then, a camouflage garment was produced in the same manner as in Example 1.

The characteristics of the camouflaged clothing thus obtained are shown in Table 1. The camouflage garment of Comparative Example 1 has a thermal emissivity of 0.8.
It was 1 to 0.84, and as a result of observation with a far-infrared imager, it could not be harmonized with the background (forest), the image contrast was large, and the camouflage was not sufficient.

Example ² A plain weave having a fineness of 132 dtex and a unit weight of 135 g / m ² made of polyester fibers having 72 filaments was scoured.
Heat set. Then, one surface was coated with a urethane resin containing a brominated flame retardant compound. On the other hand, on the non-coated surface, 50 deposited on a polyester film
A 0 angstrom aluminum vapor deposition film was transferred via a polyester adhesive. After that, 7.2 g / m ^{2 of} vinyl chloride / vinyl acetate copolymer resin containing 25 parts of a light green pigment similar to forest on the aluminum vapor deposition film surface
The coating process was performed with a doctor knife so that the coating amount of Similarly, dark green pigments, brown pigments, and black pigments were processed. The coating amount of each is
^{10.1g / m 2, 12.8g / m} 2, 13.7g / m 2
Met. Cloth of these four colors 150cm ² , 225c
It was cut into leaf-shaped pieces of m ² and 300 cm ² . on the other hand,
A 0D color ripstop fabric having a fineness of 56 dtex and a polyamide fiber of 24 filaments and a basis weight of 58 g / m ² was used as a lining and sewn into a clothing shape. Next, leaf-shaped pieces of four colors with different coating amounts were sewn to this lining with a No. 50 polyester thread as in Example 1 to fabricate a camouflage garment.

The characteristics of the camouflaged clothes thus obtained are shown in Table 1. The camouflage clothing of the present invention has a thermal emissivity of 0.50 to
It consisted of many pieces in the range of 0.86, and as a result of observation with a far-infrared imager, it was in harmony with the background (forest), the image contrast was small, and shape identification was difficult. Also,
The camouflage was also excellent in the visible light and near-infrared regions.

[0029]

[Table 1]

[0030]

EFFECTS OF THE INVENTION According to the present invention, a camouflage having an excellent camouflage property in a far infrared region of 8 to 14 μm against a natural environment such as a forest or a grassland, which is hard to detect even by visual inspection or an infrared imaging device. Batteries can be provided.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an example of the structure of a camouflaged garment of the present invention.

[Explanation of symbols]

1 lining 2 light green pieces 3 Dark green pieces 4 brown pieces 5 Black pieces 6 sewing threads

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Claims (13)

[Claims] 1. A garment, comprising a lining and a plurality of pieces each composed of a sheet having a metal thin film layer and a camouflage colorant-containing resin layer laminated on at least one side thereof. A camouflage garment characterized in that the heat emissivity of its surface is distributed in multiple stages. 2. The camouflage garment according to claim 1, wherein the piece has a leaf shape. 3. The thermal emissivity of the piece is 0.40 to 0.9.
The camouflage garment according to claim 1 or 2, wherein the camouflage garment is distributed within a range of 0. 4. The camouflage garment according to claim 3, wherein the difference between the maximum value and the minimum value of the thermal emissivity of the many pieces constituting the sheet is 0.05 or more. 5. The camouflage garment according to any one of claims 1 to 4, wherein the area of the piece is 10 to 500 cm ² . 6. The camouflage garment according to claim 3, wherein the plurality of pieces constituting the sheet have an average thermal emissivity of 0.50 to 0.70. 7. The basis weight of the sheet forming the piece is 50.
~ 200 g / m ² 7.
The camouflaged clothing described in any of 1. 8. The camouflage garment according to claim 1, wherein the sheet forming the piece is a woven fabric. 9. The fineness of the yarns constituting the woven fabric is 40 to 1
The camouflage garment according to claim 8, wherein the camouflage garment has a size of 70 dtex. 10. The fineness of the yarn constituting the lining is 34 to
The camouflage garment according to any one of claims 1 to 9, wherein the camouflage garment is 78 dtex. 11. The camouflage garment according to any one of claims 1 to 10, wherein the lining is a mesh-shaped woven or knitted fabric. 12. The camouflage garment according to claim 1, wherein the joining is performed by stitching. 13. The camouflage garment according to claim 1, wherein the piece has a limiting oxygen index of 25 or more measured according to JIS K7201 method.