JP4940538B2 - Lamination material - Google Patents

Description

  The present invention relates to a laminated material mainly composed of a cloth base material for camouflaging that is difficult to be recognized even by an infrared scope, a night vision camera, or the like.

  In recent years, new reconnaissance methods have been devised on the battlefield, and infrared light is used for this purpose. For example, if a munitions facility or army on the ground surface is photographed by infrared photography from an aircraft, an image that can be distinguished from surrounding objects such as the munitions facility or the army is presented. In the same way, reconnaissance such as direct shooting with infrared night mirrors and infrared filters is also carried out.

  Conventional battle clothes have been widely used on battlefields, particularly in dense forests, because visible light has been difficult to distinguish from plants by printing four-color camouflage patterns on the fabric surface. . Also in the near-infrared region, it has been known to approximate the natural world by using a pigment that controls the reflectance of the pigment used for camouflage.

  However, at present, infrared thermography for detecting far-infrared rays is being used for military use, and the conventional impersonation technique has little effect, and an effective means for impersonating far-infrared rays is required (for example, Patent Document 1). , See Patent Document 2).

The said prior art document is shown.
JP-A-5-132879 Japanese Patent Application No. 2004-21356.

  The technique of patent document 1 provides the base fabric for camouflage which is hard to be visually recognized also by an infrared camera etc. by discharging | emitting body temperature efficiently to external air by making a three-dimensional cut | notch in a base fabric, and suppressing heat storage. Technology.

  However, in this patent, there is no description regarding the detailed laminated structure and material structure of the base fabric, and it is also mentioned that the performance depends on the material. In addition, since the performance is added by opening the notch, the human body cannot be worn directly, but is used for putting on a conventional military uniform.

Therefore, the inventors have proposed a base fabric configuration that can be directly worn by a human body according to Patent Document 2. The basic structure is a laminated material of cloth base material / adhesive layer / metal foil / ink pattern layer / resin layer, and in particular, a resin layer is arranged on the outermost layer as a protective layer of metal foil as a reflective layer and a printing base material layer, Select a resin composition mainly composed of α / β polyethylene that exhibits infrared inactivity for the printed picture layer / (adhesive layer /) resin layer outside the reflective layer, and reduce the resin thickness to measure far infrared temperature. It is the structure which added the camouflage property in.
However, in this configuration, since the resin layer has no particular property other than infrared inactivity, there are restrictions on antifouling properties, water / oil resistance, and other functionalities.

The present invention has been made in view of the above-mentioned problems related to a laminated material mainly composed of a cloth base material for camouflage, and is excellent in antifouling property, water resistance and oil resistance, and is used by an infrared scope, a night vision camera, etc. It is an object of the present invention to provide a laminated material mainly composed of a cloth base material for camouflage that can be used as camouflage clothes such as combat clothes.

Invention of Claim 1 of this invention is a laminated material for camouflage by which a cloth base material, a metal layer, and a surface resin layer are laminated | stacked one by one, Comprising: The said metal layer is foil or vapor deposition film of either aluminum or silver. There, the surface resin layer, wherein the camouflage pattern layer der Rukoto configured with an ink using an acid-modified polyvinylidene fluoride as a binder, a disguised laminated material.

Thus, according to the first aspect of the present invention, there is provided a fake laminated material in which a cloth base material, a metal layer, and a surface resin layer are sequentially laminated, and the metal layer is a foil or a foil of either aluminum or silver. a deposited film, the surface resin layer, excellent acid-modified polyvinylidene fluoride camouflage pattern layer der composed of ink used as the binder Runode, water repellency, antifouling property and water and oil resistance, visible It can become the laminated material for camouflage which can add the effect | action which makes it difficult to distinguish from a plant under a light ray.

The invention of claim 4 is the invention of claim 1, 2 or 3, the coating amount of the layer combined the surface resin layer and the ink pattern layer is 0.5 to 30 g / m ² (solid content) It is the laminated material for camouflaging characterized by being.

  As described above, the laminated material for camouflage of the present invention provides a base fabric that is difficult to confirm even in the dark with an infrared scope, a night vision camera, etc., and is hardly visible even when the tree is backed at a position 100 m away in the daytime it can. In addition, heat resistance, oxidation resistance, chemical resistance, water and oil repellency, antifouling properties, and weather resistance, which are the characteristics of fluororesin, can be added as base fabric characteristics, and it is excellent in suitability for use as clothes. A fabric can be provided.

  The present invention will be described in detail below based on one embodiment.

  As shown in FIGS. 1 and 2, for example, the laminating material for camouflage of the present invention is formed by sequentially laminating a cloth base material (1), a metal layer (2), and a surface resin layer (3).

  The fabric substrate (1) is the innermost layer of the laminated material (10). Assuming direct contact with the human body, plant fibers such as cotton and natural fibers such as animal fibers may be used from the viewpoint of texture. preferable. It is also possible to use a blended product, a woven product, a knitted product, etc. of these natural fibers and chemical fibers as long as the texture is not impaired. Further, the form of the fiber material is not particularly limited, such as woven fabric, knitted fabric, and non-woven fabric.

  The cloth base material (1) arranged in the innermost layer has an action of maintaining a good wearing feeling. In addition, it is possible to reduce the amount of infrared rays generated from the human body by adding an infrared absorber similar to a phthalocyanine series to the fabric fiber.

  A metal layer (2) is an intermediate | middle layer of a laminated material (10), and has the effect | action which reflects the infrared rays emitted from a human body. For the metal layer, it is preferable to use a metal foil or metal vapor deposition film made of aluminum or silver containing a trace metal component such as iron, copper or manganese for the purpose of imparting processability such as ductility and antioxidant performance. The thickness is preferably about 6 to 25 μm in the case of a metal foil, and about 10 to 100 nm in the case of a metal vapor deposition film.

  Since both aluminum and silver have an emissivity as extremely low as 0.02, compared to the actual temperature of the human body, there is an effect of reducing the non-contact temperature measurement value by measuring the far-infrared emission amount.

  When a human body at a temperature of 36 ° C is passed through a laminate up to the second layer, the temperature measured by the far-infrared radiation measurement method is about 20 ° C, and the camouflage effect is maximum, but under visible light It is necessary to add an ink pattern layer (4), which will be described later, to add the fake suitability, and a surface resin layer (3), which is a protective layer for adding friction resistance and washing resistance as clothing.

  The surface resin layer (3) laminated on the metal layer (2) is preferably a fluoropolymer. The reason is described below.

Since fluorine atoms have outermost electrons in 2s and 2p orbitals, the bond electrons of fluorine have a particularly large interaction with the nucleus and a small polarization. The fluororesin in which the fluorine atom is bonded to the carbon atom is excellent in heat resistance, oxidation resistance, and chemical resistance because the bond energy of the C—F bond is increased. In addition, since the refractive index, dielectric constant, and surface free energy are low due to the low polarizability, it is an infrared inert structure in which excitation of dipole moment by far-infrared radiation hardly occurs, and the amount of infrared absorption and emissivity are also low. They are small compared to other polymers, have excellent water and oil repellency, antifouling properties, and excellent weather resistance. For this reason, regarding the resin used as the protective layer, it is possible to improve the reduction of the camouflage effect on far-infrared thermography by selectively using a fluoropolymer and minimizing the amount of the polymer used.

Fluorine-based polymer has _{-C00H, -OH, -COOCH 3, -SO} 2 F, a polar group such as -PO ₃ NO to molecular chain ends of the fluorine-based polymer, e.g., PTFE, PFA, ETFE, FEP, PVDF and ECTFE can be preferably used.

  An ink pattern layer (4) may be provided between the metal layer (2) and the surface resin layer (3). By providing the ink picture layer (4), the camouflage effect can be further enhanced.

The ink pattern layer (4) must be composed of the same resin-based and modified fluororesin as the surface resin layer (3) as a modifier, and from green, brown and black hues It is a camouflage pattern. When the ink resin system is the same resin system as the surface resin layer (3), the surface resin layer (3) can be omitted. The total coating amount of the ink pattern layer (4) and the surface resin layer (3) is about 0.5 to 30 g / m ² .

  In more detail, it is difficult to distinguish from a plant under visible light by printing an ink pattern layer (4) composed of a camouflage pattern on the surface of a cloth substrate (1) laminated with a metal layer (3). Can be added. As for the color distribution, for spring and summer, for example, it is allocated according to Design Registration No. 1019503. Specifically, the pigment is an area ratio of 30% light green, 40% dark green, 20% brown, and 10% black. Printed ones are preferred. For fall / winter use, for example, according to Design Registration No. 1019502, specifically, the area ratio of light green 30%, dark green 20%, brown 40%, black 10%. It is preferable to have a pigment print. Also, in the near-infrared region, it is possible to devise a method that approximates the natural world by using a pigment that controls the reflectance of the pigment used for camouflage.

  In order to add air permeability to the laminated material, it is possible to perform a drilling process in which a through hole (5) is provided in the cloth base (1) or the metal layer (2). By providing a through hole (5) in the cloth base material obtained by laminating the metal layer (2) after laminating the cloth base material (1) and the metal layer (2), and finally forming the surface resin layer (3), the through hole Can be devised to prevent the metal layer from being exposed in the cross section (see FIG. 3).

  The drilling method is not particularly limited, and examples thereof include hot needle drilling, water jet drilling, and laser drilling.

  The method for laminating the cloth base material (1) and the metal layer (2) is not particularly limited, but for example, the layer can be suitably laminated by using a dry lamination method using a urethane resin adhesive. The surface resin layer (3) is applied to the metal layer surface of the cloth substrate (1) obtained by bonding the resin solution constituting the surface resin layer by a known application method such as a gravure coating method. Can be formed.

  Hereinafter, the present invention will be described in detail by way of examples.

Example 1 is a reference example of the present invention. First, a 100 μm thick cotton cloth is prepared as the cloth substrate (1), and an aluminum foil of 7 μm thickness is prepared as the metal layer (2). The cotton cloth and the aluminum foil are pasted with a polyurethane resin adhesive by a dry laminating method. Combined (adhesive application amount 2 g / m @ 2).

A camouflage pattern is formed to a thickness of 2 μm (solid content) using a chlorinated polypropylene resin containing 5% of a modified ETFE resin as a binder on the aluminum foil surface of a cotton cloth bonded with an aluminum foil. The pattern layer (4) was used.

A modified ETFE resin was formed on the ink pattern layer (4) so as to have a thickness of 5 μm (solid content) by a gravure coating method to obtain a surface resin layer (3). In this way, the laminated material for camouflage of Example 1 was prepared .

Example 2 is a reference example of the present invention. The camouflage pattern has a thickness of 2 μm (solid content) using a chlorinated polypropylene resin with 10% modified PVDF resin added to the aluminum foil surface of the cotton cloth bonded with the aluminum foil used in Example 1 as a binder. Thus, the ink pattern layer (4) was formed.

A modified PVDF resin was formed on the ink pattern layer (4) by a gravure coating method so as to have a thickness of 2 μm (solid content) to form a surface resin layer (3). In this way, a laminated material for camouflage of Example 2 was prepared .

A camouflage pattern is formed to a thickness of 3 μm (solid content) using an acid-modified PVDF resin as a binder on the aluminum foil surface of the cotton cloth bonded with the aluminum foil used in Example 1, and an ink pattern layer (4) was formed, and the fake laminated material of Example 3 was created .

Example 4 is a reference example of the present invention. The laminated product used in Example 1 with a camouflage pattern on a laminated product of cotton cloth and aluminum foil was punched with a diamond-shaped pitch of 0.3 mm in diameter and 10 mm x 15 mm in pitch by a hot needle drilling method. A modified ETFE resin was formed from the top of the layer (4) so as to have a thickness of 5 μm (solid content) by the gravure coating method in the same manner as in Example 1 to obtain a surface resin layer (3). Finally, by forming the surface resin layer (3), the cross section of the through hole (5) is also covered with the surface resin layer (3), and the aluminum foil is not exposed .

  A camouflage pattern is formed on the aluminum foil surface of the cotton cloth bonded with the aluminum foil used in Example 1 so as to have a thickness of 2 μm (solid content) using a chlorinated polypropylene resin as a binder, and an ink pattern layer (4).

On this ink pattern layer (4), an ETFE resin was formed so as to have a thickness of 5 μm (solid content) by the gravure coating method in the same manner as in Example 1 to obtain a surface resin layer (3). In this way, a laminated material for camouflage of Example 5 which is a comparative example was prepared .

  A camouflage pattern is formed on the aluminum foil surface of the cotton cloth bonded with the aluminum foil used in Example 1 so as to have a thickness of 2 μm (solid content) using a chlorinated polypropylene resin as a binder, and an ink pattern layer (4).

A maleic anhydride-modified polypropylene resin was formed on the ink pattern layer (4) by a gravure coating method so as to have a thickness of 5 μm (solid content) to form a surface resin layer (3). In this way, a laminated material for camouflage of Example 6 as a comparative example was prepared .

The camouflage pattern has a thickness of 10 μm (solid content) using a chlorinated polypropylene resin added with 10% modified PVDF resin on the aluminum foil surface of the cotton cloth bonded with the aluminum foil used in Example 1. Thus, the ink pattern layer (4) was formed.

On this ink pattern layer (4), a modified PVDF resin was formed by a gravure coating method so as to have a thickness of 30 μm (solid content) to form a surface resin layer (3). In this way, a laminated material for camouflage of Example 7 as a comparative example was prepared.

Thus, the camouflage property and the suitability for use were evaluated based on the following evaluation method for the camouflaged laminated materials of Examples 1 to 7 . The results are shown in Tables 1 and 2.

1) Impersonation evaluation A glass beaker containing warm water was placed on a heating stirrer, stirred for a while at a low temperature setting, and adjusted so that the thermometer inserted in warm water was maintained at 35 ° C. The beaker surface was fixed with tape so that the cloth base material side of the laminating material for impersonation of Examples 1 to 7 as evaluation samples was uniformly applied, and the following temperature measurement was performed.
<Contact surface temperature> The surface temperature of the evaluation sample was measured with a platinum resistance thermometer contact surface thermometer.
<Far-infrared surface temperature> A far-infrared radiation measurement type thermal imager (a temperature distribution of a certain area of an evaluation sample was photographed with “Thermoview Ti30” manufactured by Raytek. Analysis was performed for each of thermograph images 120 × 100 cells. The temperature was obtained by averaging.

  When the measured value obtained by the far-infrared thermography was lower by 10 ° C. or more than the measured value obtained by the contact-type surface thermometer, the determination criterion of impersonation was used.

２）使用適性評価
〈屈曲耐性〉‥ 評価試料を、ゲルボフレックステスターを使用して室温条件における１０００回屈曲を繰り返した後のピンホール数を測定。ピンホール数１０個以下で屈曲耐性量良好と判断した。
〈洗濯適性〉‥ 評価試料を、洗剤を入れた水で洗濯機で洗浄、直射日光下で乾燥という作業を５回繰り返した後のピンホール数を測定。１０個／ｍ2 以下は洗濯適性良好と判断した。
〈防汚性〉‥ 評価試料の上に赤色チェック液をスプレー塗布し、１分間放置した後に布で拭き取った。この時、赤色染料の沈着がない試料は防汚性良好と判断した。

2) Use aptitude evaluation
<Bend resistance> The number of pinholes after an evaluation sample was repeatedly bent 1000 times at room temperature using a gelbo flex tester was measured. The number of pinholes was 10 or less, and the bending resistance was judged to be good.
<Washing suitability> The number of pinholes was measured after the evaluation sample was washed with a washing machine with water containing a detergent and dried under direct sunlight five times. Less than 10 pieces / m @ 2 was judged to have good washing suitability.
<Anti-fouling property> A red check solution was sprayed on the evaluation sample, left for 1 minute, and then wiped off with a cloth. At this time, a sample without red dye deposition was judged to have good antifouling properties.

表１、表２に示されているように、実施例１〜４の本発明の偽装用積層材料は、比較のための実施例５〜７の積層材料に比較して接触式表面温度計で得られた測定値より遠赤外線式サーモグラフィーで得られた測定値が上記の判断近である１０°Ｃ以上低く、偽装性に優れている。同時に実施例１〜４の本発明の偽装用積層材料は使用適性も問題ないことが判る。

As shown in Tables 1 and 2, the camouflaged laminated material of the present invention of Examples 1 to 4 is a contact type surface thermometer compared to the laminated materials of Examples 5 to 7 for comparison. The measured value obtained by far-infrared thermography is lower than the measured value by 10 ° C. or more, which is close to the above judgment, and the camouflage is excellent. At the same time, it can be seen that the fake laminated materials of the present invention of Examples 1 to 4 have no problem in suitability for use.

Moreover, the clothing for camouflage was created using the two types of laminated materials obtained in Example 1 and Example 5 as a comparative example , and a practical test was performed by trying on a human body. As a result, when a visual test was performed against a background of trees at a position 100 m away, both were hardly visible, but when a visual test was performed outdoors using a far-infrared thermography, the laminate obtained in Example 1 was obtained. While clothing made using the material is almost invisible, clothing made using the laminated material obtained in Example 5 as a comparative example is easily visible and controls far-infrared radiation. It was confirmed that the effect was poor.

It is sectional explanatory drawing which shows one Example of the laminated material for camouflage of this invention. It is sectional explanatory drawing which shows another Example of the laminated material for camouflage of this invention. It is sectional explanatory drawing which shows another Example of the laminated material for camouflage of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cloth base material 2 ... Metal layer 3 ... Surface resin layer 4 ... Ink pattern layer 5 ... Through hole 10 ... Lamination laminated material

Claims (1)

A laminated material for camouflage in which a cloth base material, a metal layer, and a surface resin layer are sequentially laminated, wherein the metal layer is a foil or a vapor deposition film of either aluminum or silver, and the surface resin layer is acid-modified. wherein the camouflage pattern layer der Rukoto configured with an ink using polyvinylidene fluoride as a binder, disguised laminated material.

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