Camouflage fabric having near infrared ray reflectance adjusting characteristics

Abstract

The present invention relates to a camouflage fabric having near infrared ray reflectance adjusting characteristics. The aim of the present invention is to achieve semi-permanent durability so as to significantly ameliorate problems of inferior durability which occur in an existing method for manufacturing a camouflage fabric, i.e. applying carbon and a pigment absorbing near infrared rays to a synthetic fabric, and to enable near infrared ray reflectance in a near infrared ray spectrum having an infrared ray wavelength band of 720 nm to 1500 nm so as to exhibit little or no difference from the near infrared ray reflectance of the natural background of each terrain, thereby achieving predetermined camouflage effects. In addition, copper sulfide nanoparticles, or metal sulfide nanoparticles containing copper sulfide, have antimicrobial properties and conductive properties, and the camouflage fabric for military use, which has superior physiochemical properties and naturally exhibits antimicrobial properties and antistatic properties even without a separate post-treatment, can be provided for effective use in clothing, equipment, tents, military supplies, etc. To achieve the above-described purposes, the camouflage fabric having the near infrared ray reflectance adjusting characteristics according to the present invention is characterized in that conductive synthetic polymeric materials in which copper sulfide nanoparticles, or metal sulfide nanoparticles containing copper sulfide, which fundamentally have near infrared ray reflectance adjusting characteristics, are coordinate bonded to a polymeric substrate and are then designed and woven such that the near infrared ray reflectance in a near infrared ray spectrum having the infrared ray wavelength band of 720 nm to 1500 nm exhibits little or no difference from the near infrared ray reflectance of an object existing in the environment.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of Korean Patent Application No. 10-2011-0068211, filed on Jul. 11, 2011 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.TECHNICAL FIELD[0002]The present invention relates to a camouflage fabric with near infrared ray reflectance adjusting characteristics, and more particularly, to a camouflage fabric with near infrared ray reflectance adjusting characteristics, which can solve secession of application chemicals when a near infrared absorbing pigment or a carbon compound is coated on a synthetic fabric in a typical camouflage fabric manufacturing method, by weaving a camouflage fabric having a camouflage performance against a near infrared observation sensor using a conductive yarn containing copper sulfide nanoparticles or metal sulfide nanoparticles including copper sulfide, and has a Near Infrared Ray Reflectance (NIRR) that is identical to or si...

AI Technical Summary

Benefits of technology

[0027]The present invention can significantly improve a poor durability occurring when a near infrared absorbing pigment and a carbon compound are coated on a synthetic fabric in a typical camouflage fabric manufacturing method, by weaving a camouflage fabric having a camouflage performance against a near infrared observation sensor using a conductive yarn containing copper sulfide nanoparticles or metal sulfide nanoparticles including copper sulfide.

[0028]The present invention can more effectively achieve a certain camouflage effect by allowing a Near Infrared Ray Reflectance (NIRR) to be identical to or similar to those of natural backgrounds in a near infrared spectrum in which a near infrared ray wavelength band ranges about 720 nm to about 1,500 nm.

[0029]More specifically, two types of multifilament yarns including a first multifilament yarn and a second multifilament yarn are woven into plain weave or fancy plain weave as a warp and a weft by a loom. Since the two types of filament yarns are woven so as to have a specific near infrared ray reflectance of about 25% to about 70% according to a blending ratio of the first multifilament yarn and the second multifilament yarn in a near infrared ray spectrum region of about 720 nm to about 1,500 nm, the camouflage fabric can provide a wearer with an improved concealment against near infrared observation devices in any surrounding environment.

[0030]Meanwhile, the present invention can provide a camouflage fabric that has superior physiochemical properties and naturally exhibits antimicrobial properties and antistatic properties even without a separate post-treatment because metal sulfide nanoparticles including copper sulfide and copper sulfide nanoparticles have antimicrobial properties and conductive properties.

[0031]The present invention can be used for military clothes, equipment, tents, and instruments.

Problems solved by technology

One of the important responsive measures of the target against the threat thereto is camouflaging, such that it will be difficult for the enemy to detect the existence of such target.

The limitation of this method is that the carbon black added is so excessively dark that the carbon black may impose a negative effect to the visible tone intended for the camouflage fiber.

In an environment such as the desert that requires a considerably bright tone, this method has a limitation in achieving appropriate visible and near infrared ray camouflages.

On the other hand, the inorganic pigments, such as cobalt, vanadium, molybdenum, tungsten, ITO, ATO, and ruthenium, effectively interrupt and absorb rays mainly in the wavelength equal to or greater than 1,200 nm, but the inorganic pigments are very expensive and also there is still a limitation in weather resistance due to the secession.

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