JP2006300480A - Far infrared camouflage material, and far infrared camouflage clothes using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide far infrared camouflage clothes with a superior feeling of wear, having a camouflage effect against visible rays and near infrared rays as a matter of course, but also in a far infrared area, and also in both stationary and moving states. <P>SOLUTION: The far infrared camouflage material has at least an air permeable outer layer material 1, a ventilating layer 2, and a ventilating means 3 for passing outside air through an air permeable inner layer material 4 and the ventilating layer 2 as needed. The air permeable outer layer material 1 and/or the air permeable inner layer material 4 are comprised by applying metal surfacing treatment, and a surface temperature of the outer layer material 1 is approximated to an outside air temperature by passing outside air through the ventilating layer 2. The far infrared camouflage clothes are provided using the far infrared camouflage material. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a camouflage material that exhibits a camouflage effect on a far-infrared exploration device and the like, and a camouflage clothing using the camouflage material. More specifically, the present invention relates to a far-infrared camouflage material that has a camouflage property from visible light to a far-infrared region, has good wearability to an object to be impersonated, and has improved the camouflage effect, and a far-infrared camouflage clothing excellent in wearing feeling It is.

Conventionally, as a method of camouflaging a human body, camouflage-colored clothes are worn, or camouflage clothes are camouflaged with grass and leaves. In recent years, disguising property for far infrared rays has been required, and far infrared disguise clothing using a pigment or a metal thin film has been reported. (For example, refer to Patent Documents 1 and 2).
However, when a metal having far-infrared absorptivity is used, the metal has a gloss and is not satisfactory in terms of disguise in the visible light region.
JP 2003-262498 A Japanese Patent Laid-Open No. 06-137794

  The present invention is intended to solve the above-described problems, and in the field of camouflage technology, it exhibits not only excellent camouflage properties for visible light, near infrared rays, and even far infrared rays, but also wearability. It is intended to provide a far-infrared camouflage material and a far-infrared camouflage that are excellent in handling property, wearability, and the like, and also excellent in camouflage in any of a stationary state and an operating state.

As a result of intensive studies to solve the above problems, the present inventors have finally completed the present invention. That is, the present invention has the following configuration.
A first invention is a far infrared disguise comprising at least a breathable outer layer material (1) subjected to a metal surface treatment, a ventilation layer (2), and ventilation means (3) for ventilating the ventilation layer (2) with outside air. A far-infrared camouflage material characterized in that the surface temperature of the outer layer material (1) is approximated to the outside air temperature by allowing outside air to flow through the ventilation layer (2).
The second invention further includes at least a breathable outer layer material (1), a ventilation layer (2), a breathable inner layer material (4), and a ventilation means (3) for ventilating the ventilation layer (2) with outside air. A far-infrared disguised material, wherein the breathable outer layer material (1) and / or the breathable inner layer material (4) is subjected to a metal surface treatment, and the ventilating layer (2) is allowed to ventilate the outside air. A far infrared disguised material characterized in that the surface temperature of the outer layer material (1) is approximated to the outside air temperature.
Furthermore, a third invention is a far-infrared camouflage garment manufactured using the far-infrared camouflage material according to the first or second invention.

According to the present invention, it is not necessary to use a special pigment, the camouflage effect is excellent not only in the visible ray and near infrared region, but also in the far infrared region, and excellent in any state of the stationary state and the operating state. Can provide a far-infrared camouflage. In particular, since it can be rapidly adapted to the outside air temperature, it is excellent in the camouflage effect for the infrared exploration device in the dark. Moreover, when the ventilation layer laminated | stacked on an outer layer material is a three-dimensional network-like structure which consists of an elastomer etc. which have rubber elasticity, it is excellent also in the mounting property with respect to a to-be-fake material.
Furthermore, since the far-infrared camouflage clothing using the far-infrared camouflage material of the present invention has a ventilation layer, it is possible to appropriately express heat dissipation, heat retention, etc., and there is an effect of excellent wearing comfort. Not only can the human body wearing camouflage clothing exhibit an excellent camouflage effect even when the ventilation of the ventilation layer is obstructed or the body temperature is likely to rise in a stationary state or operating state. .

Hereinafter, the present invention will be described in detail.
The far-infrared image analysis device and the far-infrared ray exploration device (thermotracer) can form contrast images color-coded according to the surface temperature of various objects on the display, and what the exploration object is based on the image Recognize Therefore, in order to disguise such image recognition, disguising the surface temperature of the target object in accordance with the surrounding environment, that is, far-infrared disguise performance is important.
In the present invention, such performance is achieved by controlling the surface temperature of the target object to a temperature approximating the surface temperature of the surrounding environment. For this purpose, a breathable outer layer material, a ventilation layer (three-dimensional network structure) is achieved. Body), and if necessary, use a breathable inner layer material and a microfan (ventilator). According to the present invention, it is possible to exhibit the camouflage effect in the wavelength region of 8 to 13 μm and 3 to 8 μm.

  The breathable outer layer material (1) and the breathable inner layer material (4) in the present invention are sheet-like materials composed of fibers and the like, and examples thereof include woven fabrics, knitted fabrics (knitted fabrics), nonwoven fabrics, and nets. The types of these materials are not particularly limited, and synthesis such as polyester, polyamide (aliphatic, aromatic, etc.), polybenzazole, acrylic, vinylon, polypropylene, polyethylene, polyvinyl chloride, polyvinylidene chloride, polyurethane, PTFE, etc. Any of fiber, regenerated fiber such as rayon, semi-synthetic fiber such as acetate, natural fiber such as cotton, hemp and wool, inorganic fiber such as glass and carbon can be used. These can be used alone or in admixture of two or more. In addition to the far-infrared camouflage that is the object of the present invention, when fabric strength, lightness, flame retardancy, etc. are required, polyester fibers, aromatic polyamide fibers, polybenzazole fibers, depending on their properties Furthermore, high molecular weight polyolefin fibers (polyethylene, polypropylene, etc.) can be used.

Further, the air permeability in the air permeable outer layer material (1) of the present invention is preferably an air permeable property capable of positively sending outside air into the air permeable layer (2). L 1096.88.27.1 (Fragile method) is preferably ^{3 to} 100 cm ³ / cm ² · sec. When the air permeability is less than 3 cm ³ / cm ² · sec, it may be difficult to send air close to the outside air temperature through the outer layer material, and the disguise effect may be impaired. When the air permeability of the fabric exceeds 100 cm ³ / cm ² · sec, the camouflage effect near the microfan is obtained, but the camouflage effect in the part far from the mounting part is inferior, and the camouflage effect may be partially impaired. .

Further, the breathable inner layer material (4) in the present invention preferably has an air permeability (JIS L 1096.88.27.1 (Fragile method)) of 100 cm ³ / cm ² · sec or less. When the air permeability of the fabric exceeds 100 cm ³ / cm ² · sec, since the air warmed in the clothes is sent through the inner layer fabric, the camouflaging effect may be partially impaired.

The ventilation layer (2) in the present invention is a layer in which the outside air can be ventilated across the entire upper, lower, left, and right sides of the ventilation layer (2) by the installed ventilation means (3).
For forming such a layer, a three-dimensional (thickness) network structure (hereinafter referred to as a three-dimensional network structure) in which loops, lattices, etc. are regularly or randomly formed. (Referred to as a structure).

  Examples of the three-dimensional network structure include a knitted fabric, a woven fabric, and a three-dimensional random loop structure. Among these, the three-dimensional random structure is easy in terms of manufacturing and easy to ventilate. A loop structure is preferred. Examples of the three-dimensional random loop structure include a structure in which continuous filaments are twisted to form a large number of loops, and many of the loops are in contact with each other and are maintained in a constant thickness.

  As the material for forming the three-dimensional network structure, it is possible to use the same material as the above outer layer material, but it is preferable to use a polyester-based thermoplastic resin, a polyester-based elastomer, a polyolefin-based elastomer, a polyurethane-based material. Elastomers, polyamide-based elastomers, and the like, and elastomers having rubber elasticity are particularly preferable.

  Polyester thermoplastic resins include polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), polycyclohexylene dimethyl terephthalate (PCHDT), polyethylene isophthalate ( PEI) and the like and copolyesters thereof.

  The polyester elastomer is obtained by block copolymerization of a hard segment and a soft segment. Examples of the hard segment include PET, PEN, PBT, PBN, PCHDT, and the soft segment includes PTMG, polyhexamethylene glycol ( PHMG), polypropylene glycol (PPG), polycaprolactam (PCL) and the like.

The three-dimensional network structure in the present invention preferably has a thickness of 5 to 30 mm and an apparent density of 20 to 100 kg / m ³ . When the thickness is less than 5 mm and the bulk density exceeds 100 kg / m ³ , the voids are too small, and it may not be possible to positively remove the heat production. When the apparent density is less than 20 kg / m ³ , it becomes too soft and when bent at an acute angle, the ventilation layer becomes cut off, and the surface temperature of the sample (wear) increases as a whole. May be damaged. Furthermore, when the thickness exceeds 30 mm, the gap becomes too large, and the operability (ease of movement) may be impaired.

  In particular, the three-dimensional random loop structure of the three-dimensional network structure according to the present invention expresses a three-dimensional spring characteristic by a random loop composed of continuous filaments, so that the ventilation layer is in a blocked state even when bent at an acute angle. It is easy to form a space (outside air passage layer) stably between the outer layer material and the skin, and it is easy to flow the outside air evenly. For this reason, the surface temperature of the camouflage material (clothing) can be approximated evenly to the surface temperature of surrounding vegetation and objects.

  The outside air in the present invention mainly means air in the surrounding environment where the target object exists, but may be cooled air, heated air, gas, or the like as necessary. In short, the surface temperature of the target object can be quickly controlled to a temperature that approximates the surface temperature of the surrounding environment.

  As a ventilation means for sending outside air to the ventilation layer in the present invention or sucking in air, a micro fan (a ventilator) can be mentioned. In order to improve the wearability and wearing feeling, it is reduced in size and static pressure. Preferably it is. The size of the microfan (ventilator) that has been reduced in size is preferably 50 mm or less in diameter, but is preferably the same as or less than the thickness of the three-dimensional network structure. When the diameter of the microfan is larger than the thickness of the three-dimensional network structure, it is desirable to connect (mount) so that the air volume is not impaired and turbulence does not occur. Moreover, it is preferable that the static pressure value of the microfan (ventilator) which is made static pressure is 120 Pa or less, More preferably, it is 90 Pa or less. The larger the air volume, the more actively the outside air can be sucked in through the outer layer material and the ventilation layer. However, considering the size of the miniaturized microfan (ventilator), about 100 to 800 l / min is preferable. Since the air volume varies depending on the mounting position and number of microfans (ventilators), the present invention is not limited to this.

  The mounting position and number of microfans (ventilators) are not particularly limited, but microfans not only send in outside air but also actively exhaust outside air while actively exhausting outside air. It is preferable to install it so that it inhales. For example, a microfan that actively draws air outside the clothes from the breathable outer layer material or the ear (cut portion) of the three-dimensional network structure through the breathable outer layer material and the ventilation layer and the outside air inside the clothes It is desirable to use in combination with a microfan that exhausts air.

  The method for attaching the microfan is preferably installed so as to be in contact with the ventilation layer and not so as to protrude from the outer layer cloth, but is not particularly limited. As the drive source, a formable battery power source composed of a plurality of primary batteries or secondary batteries such as AA is used.

  The breathable outer layer material (1) and / or the breathable inner layer material (4) in the present invention is subjected to a metal surface treatment. The metal film formed on the fiber by the metal surface treatment is not limited to the front side, middle part, back side, etc. when viewed from the cross-sectional direction of the outer layer material or inner layer material. In the porous outer layer material (1), the intermediate portion, the back surface side, and the breathable inner layer material (4), the front (front) surface side (human body side) and the intermediate portion are preferable.

  The metal surface treatment method may be any known metal surface treatment method as long as it does not significantly impair the air permeability, and is not particularly limited, but a method of performing metal sputtering, vacuum deposition, or the like is preferable. A method of mixing fibers and metal fibers can also be employed. As a simple method that does not impair air permeability and has a high heat shielding effect, a metal sputtering method can be mentioned.

  In the case of the metal sputtering method, the metal to be sputtered is preferably made of a metal such as Al, stainless steel, Ti, Cr, Ni, Fe, Sb, Sn, Pb, and Zn. The sputtering thickness is not particularly limited, but is preferably 10 to 1000 nm. When the human body moves, the ventilation layer (2) is crushed, so the heat shielding effect by metal sputtering and the breathable outer layer material by wearing a micro fan (blower) and the ears (cut parts) of the three-dimensional network structure It is preferable to use a combination of a microfan that actively takes outside air through the air-permeable outer layer material and the ventilation layer and a microfan that actively exhausts outside air inside the clothes.

  In the fake garment of the present invention, since the metal component is present in the breathable outer layer material or the breathable inner layer material as described above, a portion that is worn by the human body and partially impairs the ventilation property of the ventilation layer occurs. Even if the body temperature rises, it is possible to suppress the rapid temperature rise of the part and the fake clothes, so that even if the human body is in a stationary state or an operating state, an excellent camouflage effect can be exhibited. .

  In the present invention, the surface temperature of the far-infrared camouflage material of the present invention is detected by a temperature sensor, and the switch of the microfan is controlled so that the temperature detected by this temperature sensor becomes the surface temperature of the surrounding environment. It is also possible to automatically perform intake of outside air to the infrared camouflage and exhaust from the far infrared camouflage.

  Furthermore, in the present invention, it is preferable to employ a known camouflaging method in which a surface of the breathable outer layer material (1) is provided with a pigment (dye, pigment, etc.) or pattern that exhibits a camouflage effect.

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.
First, the fake clothing materials and measurement methods (evaluation methods) employed in Examples and Comparative Examples will be described.
(Apparent density)
Measured according to JIS K 6400-5. That is, after drying at 80 ° C. for 120 minutes and measuring the temperature and humidity at 20 ° C. and 65% RH, measure the thickness, width, and length at three or more different locations and calculate the average value. The volume (V) of each sample piece was calculated. Next, the mass (W) of each sample piece was measured to an accuracy of 0.5% (expressed in grams) and obtained from the following calculation formula.
Apparent density (ρ) = W / V
W: Mass of sample piece (g)
V: Volume of sample piece (cm ³ )
ρ: Apparent density (g / cm ³ or kg / m ³ )

(Air permeability)
It was measured according to JIS L 1096.88.27.1 (Fragile method). That is, sample pieces of about 20 cm × 20 cm were collected from five different outer layer materials, and the sample pieces were attached to one end of a cylinder using a Frazier type tester (manufactured by Daiei Kagaku Seiki Seisakusho, model: AP-500). After that, the suction fan was adjusted so that the inclination type barometer would show a pressure of 125 Pa (1.27 cmH ₂ 0) with an adjusting resistor, and the pressure indicated by the vertical gauge at that time and the type of air hole used The amount of air passing through the test piece (cm ³ / cm ² · sec) was determined according to the table attached to the testing machine. The measurement was performed 5 times, and the average value was calculated and rounded to one decimal place.

(Creation of breathable outer layer material A)
A plain woven fabric of 35% polyester fiber / 65% cotton fiber (45 warps × 45 wefts / 136 warps / inch × 72 weft densities / inch) has camouflage properties against visible and near infrared rays (with camouflage effect) The pigment (expressed) was printed on a leaf pattern to obtain a breathable outer layer material A. As a result of measuring the air permeability, it was 20 cm ³ / cm ² · sec.

(Creation of breathable outer layer material B)
Further, Al was sputtered (80 nm in thickness) on the skin side surface of the breathable outer layer material A (opposite surface on the outside air side) to obtain a breathable outer layer material B. As a result of measuring the air permeability, it was 20 cm ³ / cm ² · sec.

(Creation of breathable inner layer material A)
A plain woven fabric of 100% polyester fiber (45 warps × 45 wefts / 136 warps / inch × 72 weft densities / inch) and a breathable inner layer material A were obtained. As a result of measuring the air permeability, it was 20 cm ³ / cm ² · sec.

(Creation of breathable inner layer material B)
Further, Al was sputtered (thickness: 80 nm) on the skin side surface of the breathable inner layer material A (opposite surface on the outside air side) to obtain a breathable inner layer material B. As a result of measuring the air permeability, it was 20 cm ³ / cm ² · sec.

(Ventilation layer: Creation of a three-dimensional network structure)
A polyester thermoplastic elastomer (Perprene 40B, manufactured by Toyobo Co., Ltd.) was used as a raw material to obtain a three-dimensional network structure (Breath Air, manufactured by Toyobo Co., Ltd.) having an apparent density of 50 kg / m ³ and a thickness of 10 mm.

Using each of the obtained breathable outer layer material, ventilation layer, and breathable inner layer material, sewing clothes were made by combining the breathable outer layer material and the breathable inner layer material as shown in Table 1, and a microfan was attached. .
In other words, a 24V power supply is connected to a microfan (manufactured by Mitsumata Electric Co., Ltd., model: JET1830W, dimensions: diameter 30 mm x length 40 mm), and the outside air side at the clavicle upper part, upper arm upper part, flank central part, and lower hem part Attached to. In this case, the upper part of the clavicle and the upper part of the upper arm are the same place on the left and right sides, and the microfan is mounted in the direction of exhausting the air in the clothes. . When the thickness of the ventilation layer of an Example (comparative example) was smaller than a diameter (30 mm), it mounted | worn with the sample at the perpendicular direction so that the airflow of a microfan (blower) might not be impaired.

About each obtained disguise clothes, 10 test subjects (a breakdown, 5 men, 5 women) 24 years old or more and 5 years old or less wore and evaluated the camouflage property.
That is, the subject wears a sample in the dark, operates the microfan (ventilator) for 30 minutes for 4 hours, then stands in a forest with vegetation in the background, and analyzes the disguise effect in a stationary state by far-infrared image analysis Observation was performed using an apparatus. Furthermore, the camouflage effect in the operating state of free walking (speed of about 2-4 km / hr) and free running (speed of about 5-8 km / hr) was also observed.
The far-infrared image analyzer uses a thermotracer TH3102 (manufactured by NEC Sanei Co., Ltd.) and observes from a distance of 50 m with far-infrared rays having a detection wavelength of 8 to 13 μm, and distinguishes the disguise into the following four stages. did.
A: Disguised clothing cannot be identified by far-infrared images.
○: Fake clothes are almost indistinguishable with far-infrared images.
Δ: Fake clothes can be almost identified by far-infrared images.
X: Fake clothes can be identified by far-infrared images.

The obtained evaluation results are shown in Table 1.
From Table 1, it can be seen that the far-infrared disguise of the present invention not only exhibits excellent disguise with respect to far-infrared rays in a stationary state but also has excellent disguise with respect to far-infrared rays in an operating state.

  The far-infrared camouflage material and far-infrared camouflage clothing of the present invention can quickly approximate the surface temperature of the object to be imitated to the temperature of the surrounding environment, exhibit not only excellent camouflage properties for far-infrared rays, but also wearing It is also excellent in performance, handling, wearability, etc., and further, it is excellent in camouflage effect in both the stationary state and the operating state of the human body, so it contributes to the field that requires camouflage materials and camouflage clothing It is.

It is a schematic cross section which shows an example of the cross-sectional structure of the far-infrared camouflage material of this invention. It is a schematic cross section which shows an example of the cross-sectional structure of the far-infrared camouflage material of this invention. It is a schematic cross section which shows an example of the cross-sectional structure of the far-infrared camouflage material of this invention. It is a schematic cross section which shows an example of the cross-sectional structure of the far-infrared camouflage material of this invention. It is a schematic block diagram which shows the mounting position of the microfan in an example of the far-infrared camouflage clothing of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Breathable outer layer material 2 ... Ventilation layer 3 ... Micro fan 4 ... Breathable inner layer material 5 ... Human body part 6 ... Fake clothes 7 ... Upper part of clavicle 8 ... Upper arm upper part 9 ... flank center part 10 ... lower hem part 11 ... forearm part

Claims (3)

  A far-infrared disguised material having a breathable outer layer material (1) subjected to at least a metal surface treatment, a ventilation layer (2), and ventilation means (3) for ventilating the outside air to the ventilation layer (2), A far-infrared disguised material characterized in that the surface temperature of the outer layer material (1) is approximated to the outside air temperature by passing outside air through the ventilation layer (2).   A far-infrared disguised material having at least a breathable outer layer material (1), a ventilation layer (2), a breathable inner layer material (4), and ventilation means (3) for ventilating the outside air to the ventilation layer (2), The breathable outer layer material (1) and / or the breathable inner layer material (4) is subjected to a metal surface treatment, and the surface temperature of the outer layer material (1) is obtained by allowing the ventilation layer (2) to ventilate the outside air. A far-infrared camouflage material characterized by approximating the temperature to the outside air temperature.   A far infrared disguised clothing manufactured using the far infrared disguised material according to claim 1 or 2.