WO2007069803A1 - Camouflage textile with non-electrolytic plated fiber - Google Patents
Camouflage textile with non-electrolytic plated fiber Download PDFInfo
- Publication number
- WO2007069803A1 WO2007069803A1 PCT/KR2006/000297 KR2006000297W WO2007069803A1 WO 2007069803 A1 WO2007069803 A1 WO 2007069803A1 KR 2006000297 W KR2006000297 W KR 2006000297W WO 2007069803 A1 WO2007069803 A1 WO 2007069803A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- camouflage
- yarns
- texture
- fabric
- deniers
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 40
- 239000004753 textile Substances 0.000 title description 14
- 239000004744 fabric Substances 0.000 claims abstract description 50
- 239000000203 mixture Substances 0.000 claims abstract description 26
- 239000000126 substance Substances 0.000 claims abstract description 23
- 229920000728 polyester Polymers 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 17
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims abstract description 11
- 239000004677 Nylon Substances 0.000 claims abstract description 10
- 238000009713 electroplating Methods 0.000 claims abstract description 10
- 229920001778 nylon Polymers 0.000 claims abstract description 10
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 7
- -1 acryl Chemical group 0.000 claims abstract description 6
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 6
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000009940 knitting Methods 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 238000002834 transmittance Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 24
- 229920002994 synthetic fiber Polymers 0.000 abstract description 15
- 239000011248 coating agent Substances 0.000 abstract description 14
- 238000000576 coating method Methods 0.000 abstract description 14
- 230000000704 physical effect Effects 0.000 abstract description 11
- 239000012209 synthetic fiber Substances 0.000 abstract description 6
- 238000003795 desorption Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 18
- 239000003795 chemical substances by application Substances 0.000 description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910002804 graphite Inorganic materials 0.000 description 7
- 239000010439 graphite Substances 0.000 description 7
- 229920001169 thermoplastic Polymers 0.000 description 6
- 239000006229 carbon black Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 239000004416 thermosoftening plastic Substances 0.000 description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 229910000365 copper sulfate Inorganic materials 0.000 description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- 229920002972 Acrylic fiber Polymers 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 238000004260 weight control Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910000358 iron sulfate Inorganic materials 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 235000011006 sodium potassium tartrate Nutrition 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H3/00—Camouflage, i.e. means or methods for concealment or disguise
- F41H3/02—Flexible, e.g. fabric covers, e.g. screens, nets characterised by their material or structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
- H01Q17/005—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems using woven or wound filaments; impregnated nets or clothes
Definitions
- the present invention relates to a camouflage texture with conductive yarns or fibers by non-electrolytic plating, and, more particularly, to a camouflage texture for camouflage nets which can avoid desorption of plated chemicals, give attenuation capability both for centimeter wave and millimeter wave radar region, achieve camouflage capability for thermal infrared rays, having superior chemical and physical properties such as breaking strength, tensile strength, flame resistance, mildew resistance, etc., as compared to conventional camouflage textures produced by coating conventional synthetic fibers with conductive coating mixtures.
- camouflage capability In particular, with the development of smart bombs mounted with a millimeter wave radar and an infrared target-tracing sensor, camouflage capability is required for the millimeter wave radars and thermal infrared signals.
- the mechanism achieving radar characteristics in the camouflage material in fiber used for the camouflage nets is to apply camouflage characteristics by attenuating echo radar signals resulting from dipole polarization scattering of the incoming radar signals after forming a closed dipole element circuit regularly spaced (1/2 wavelength to 1/4 wavelength) on a woven fabric or non- woven fabric with electromagnetic material, that is conductive fibers, conductive coating chemicals, to give impedance for the radar waves.
- the material in fiber in which camouflage characteristics are implemented is used as a material constituting camouflage nets.
- the transmissivity of the thermal infrared rays radiated from a camouflaged object must be controlled with a specific structure.
- thermal radiation of the camouflaging material itself, namely a specific emissivity thereof must be implemented.
- US Patent 3,733,606 discloses a method of producing camouflage textures, consisting of producing a synthetic fabric by embedding single stainless steel fibers of a given length and a diameter in a woven fabric or a non-woven fabric to produce a synthetic fabric, and thereby of combining the fabric with a thermoplastic film in camouflage color or applying the thermoplastic polymer film to the fabric to produce a camouflage texture.
- the method is to produce a camouflage texture by embedding the single conductive fibers by scattering and has a disadvantage that the radar characteristics are not uniform, the texture does not exhibit camouflage capability in the military millimeter wave radar region (35, 94+ IGHz) because it is used as a camouflage texture having given apertures shaped in tree leaves, and it doesn't implement camouflage capability with respect to thermal infrared rays.
- Korea Patent Registration No.91794 discloses, in 'Method of producing a camouflage textile for super wide band radar waves', a method of producing a camouflage textile with radar characteristics by scattering and attaching carbon fibers to a textile, using an electrostatic flocking machine.
- Korea Patent Registration No. 106073 discloses, in 'Camouflage textile for super wide band radar waves', a method of producing a camouflage textile with radar characteristics by embedding aluminum deposited film yarns in a fabric at given intervals to weave the camouflage textile.
- the method of applying electromagnetic characteristics on a fabric in order to produce a camouflage material with radar characteristics includes lamination of metal foils, coating of conductive chemicals, ion electrode sputtering, vacuum coating, and plasmatic discharging.
- conductive chemicals ion electrode sputtering
- vacuum coating ion electrode sputtering
- plasmatic discharging it has been known that it is impossible to practically use the textile produced according to the aforementioned methods, as a material for camouflage nets because of many difficulties including process conditions, facility investment, physical property control, etc.
- the method of coating conductive chemicals has many problems.
- the coating chemicals may be desorbed due to the limit in the filling material ratio after applying the coating chemicals. Therefore, the method is not suitable for producing a camouflage texture to be used in military camouflage nets.
- the inventors had an idea to address the aforementioned problems. It is an object of the present invention to provide a camouflage texture, with non-electrolytic plated fibers which can avoid chemical desorption resulting from cohesion and adhesiveness capability of the applied chemicals, by embedding more than a specific amount of conductive elements in powder in order to obtain a given surface resistance when applying a conductive mixture (graphite dispersed conductive coating chemical, etc.) to a conventional synthetic fabric.
- a conductive mixture graphite dispersed conductive coating chemical, etc.
- camouflage texture that can achieve attenuation in the radar region for both centimeter waves (6+ 1, 10+ 1, 17+ IGHz) and millimeter waves (35+ 1, 94+ IGHz) and can also achieve camouflage capability with respect to thermal infrared signals, and that can be used as a material for camouflage nets having superior chemical and physical properties, for example, breaking strength, tensile strength, flame resistance and mildew resistance as well as camouflage capability.
- the camouflage texture according to one embodiment of the invention to achieve the above object is characterized in that it comprises a fabric and thermoplastic resin mixture of urethane resin mixture, acryl resin mixture or polyvinyl chloride resin mixture, applied to the fabric.
- the fabric is produced with combined yarns having a yarn fineness 140 to 650 deniers, wherein the combined yarns are produced by combining non-electrolytic plated conductive yarns having a yarn fineness 50 to 150 deniers and 10 "1 to 10 "2 ⁇ -cm in specific resistance with synthetic yarns such as polyester or nylon yarns by interlacing.
- the combined yarns having a yarn fineness 300 deniers are used as warps and wefts to have a density of 9 to 12 plies per 2.54cm.
- the combined yarns having a yarn fineness 150 deniers or less are used as base yarns to weave a texture with X-flat or S- flat structure by means of a warp knitting machine. Accordingly the invention is characterized in that the resultant camouflage texture has a weight of 40g/D to 80g/D.
- the invention is characterized in that the weight of the camouflage texture with the non-electrolytic plated fiber ranges from lOOg/D to 140g/D.
- the invention is characterized in that the chemical characteristics of the camouflage texture with the non-electrolytic plated fiber comply with Military Specification of MIL-PRF-53134; the camouflage texture has an attenuation rate of 3dB or more (50% or less in transmission) when a radar attenuation rate in general transmission is measured in the radar wave region of frequencies 6+ 1, 10+ 1, 17+ 1, 35+ 1, 94+ 1 GHz; and the transmittance thereof is 50% or less in the infrared rays region of 3 to 5D and 8 to 15D in wavelength.
- the camouflage texture according to another embodiment of the invention to achieve the aforementioned object is characterized in that it comprises a specific fabric and thermoplastic resin mixture like as urethane resin, acryl resin and polyvinyl chloride resin, applied on the fabric.
- the fabric is woven with base yarns of synthetic multi-filament yarns of nylon or polyester having a yarn fineness 50 to 200 deniers and with warps and wefts of high tenacity yarns made of nylon or polyester having a yarn fineness 300 to 750 deniers, wherein the density of the warps and wefts is set to 9 to 12 plies per 2.54cm to produce the specific fabric with X-flat or S-flat structure by means of a warp knitting machine.
- the camouflage texture also has a surface resistance of 600 ⁇ /D or less and a weight of 40g/D to 80g/D.
- the invention is characterized in that the weight of the camouflage texture with the non-electrolytic plated fiber ranges from lOOg/D to 140g/D.
- the invention is characterized in that the chemical characteristics of the camouflage texture with the non-electrolytic plated fiber comply with Military Specification of MIL-PRF-53134; the camouflage texture has an attenuation rate of 3dB or more (50% or less in transmission) when a radar attenuation rate in general transmission is measured in the radar wave region of frequencies 6+ 1, 10+ 1, 17+ 1, 35+ 1, 94+ 1 GHz; and the transmittance thereof is 50% or less in the infrared rays region of 3 to 5D and 8 to 15D in wavelength.
- Fig. 1 is a configuration of a camouflage texture in which non-electrolytic plated conductive yarns are embedded according to one embodiment of the invention
- Fig.2 is a configuration of yarns embedded with non-electrolytic plated conductive yarns of Fig.1 ;
- Fig.3 is a configuration of a camouflage texture produced with an non-electrolytic plated conductive fabric according to another embodiment of the invention. Best Mode for Carrying Out the Invention
- Fig.l is a configuration of a camouflage texture in which non-electrolytic plated conductive yarns are embedded according to one embodiment of the invention.
- Fig.2 is a configuration of combined yarns with the non-electrolytic plated conductive yarns of Fig.l.
- non-electrolytic plating used herein is a method of chemical plating to implement conductivity without losing the characteristics of synthetic fibers. It is thus a method of processing fibers, comprising the steps of immersing a general synthetic fiber in a solution containing sodium hydrate and nonionic surfactant to remove impurities, etching the fiber surface in a strong alkaline or strong acid solution, immersing the resultant fiber in a mixture solution of hydrochloric acid with palladium chloride, tin chloride, kalium chloride and subsequently washing it with water, and then immersing the fiber in a alkaline solution to remove remaining tin, kalium and the like.
- the resultant fiber is immersed in a mixture solution of sodium hydrate, Rochelle salt and formaldehyde, containing copper sulfate, nickel chloride and iron sulfate, then washed with water and dried to form a conductive metal film on the fiber surface.
- the fabric woven with such non-electrolytic plated yarns allows easy conductivity control depending on the type and the amount of metal elements used in plating and also allows easy thickness and weight control depending on the thickness of a base fiber. Since the fabric has inherent characteristics of a synthetic fiber, it is thus possible to use various conventional weaving machines when weaving the fabric, so that it is a very useful method to produce a characteristic camouflage material in fiber.
- the camouflage texture 1 with the non-electrolytic plated fiber comprises a fabric 4 woven by means of a warp knitting machine and thermoplastic mixture 3 applied on the fabric 4.
- the thermoplastic mixture 3 is based on urethane resin, acryl resin or polyvinyl chloride resin, etc.
- the thermoplastic urethane resin mixture contains carbon black, graphite, flame resistant agent, mildew resistance agent, dispersing agent, leveling agent, solvent and other filling material, etc.
- the fabric 4 has a X-flat or S-flat structure woven with combined yarns 2 by means of a warp-knitting machine.
- the combined yarns 2 are produced by combining non-electrolytic plated yarns 8 with synthetic fibers 9, for example polyester or nylon yarns, by interlacing, wherein the
- 1 9 conductive yarns 8 have a yarn fineness 50 to 150 deniers and 10 " -10 " ⁇ -cm in specific resistance, and the resultant combined yarns 2 have a yarn fineness of 140 to 650 deniers (see Fig.2).
- the combined yarns 2 having a yarn fineness 300 deniers or more are used as warps 5 and wefts 6 with a density of 9 to 12 plies per 2.54cm and the combined yarns having a yarn fineness 150 deniers or less are used as base yarns 7 to produce a texture with specific X-flat or S-flat structure.
- the weight of the fabric 4 ranges 40g/D to 80g/D. This is because, if the fabric weight is less than 40g/D, it lacks durability such as chemical and physical properties of tensile strength, tearing strength and breaking strength, required as a material for camouflage nets in fiber. If the fabric weight is more than 80g/D, the increased weight causes inconvenience in operation.
- the weight of a camouflage textile made of the non-electrolytic plated fiber according to the invention ranges lOOg/D to 140g/D. This is because the weight in basic physical properties for a military camouflage net is an important regulatory issue and because, if the weight is less than lOOg/D, it is hard to meet the basic physical properties, and, if it is more than 140g/D, it causes unnecessary overweight.
- the chemical characteristics of a camouflage texture with the non-electrolytic plated fibers according to one embodiment of the invention meets the Military Specification of MIL-PRF-53134.
- the texture has an attenuation rate of 3dB (50% or less in transmission) when the radar attenuation rate in general transmission is measured in the radar wave region of frequencies 6+ 1, 10+ 1, 17+ 1, 35+ 1 and 94+ 1 GHz, and has a transmittance of 50% or less in the infrared region of 3 to 5D and 8 to 15D in wavelength.
- Fig.3 is a configuration of a camouflage texture with non-electrolytic plated conductive fibers according to another embodiment of the invention.
- the camouflage texture 11 according to another embodiment of the invention comprises conductive synthetic fabric 12 produced by non-electrolytic plating and thermoplastic mixture 13 applied on the fabric.
- the thermoplastic mixture 13 is the same resin mixture as used in the above embodiment.
- the conductive synthetic fabric 12 made by non-electrolytic plating consists of base yarns 17 of synthetic multifilament yarns, such as nylon or polyester yarns having a yarn fineness 50 to 200 deniers and of warps 15 and wefts 16 of high tenacity nylon or polyester yarns having a yarn fineness 300 to 750 deniers.
- the density of the warps and wefts is set to be 9 to 12 plies per 2.54cm.
- a specific fabric having X-flat or S-flat structure is woven by means of a warp-knitting machine.
- conductive metals such as nickel, copper, iron, etc. are deposited by means of non-electrolytic plating, to have surface resistance of 600 ⁇ /D or less.
- a base yarn is first produced, by means of interlacing, with non-electrolytic plated conductive yarns for which an acrylonitrile based acryl fiber is reacted with copper sulfate, and polyester multifilament yarns having a yarn
- the base yarns are woven with the produced warps and wefts by means of a warp knitting machine, wherein the warp density is set to 9 plies per 2.54cm and the weft density is set to 10 plies per 2.54cm to produce a fabric with X-flat structure and having a weight of about 59g/D.
- the produced resultant fabric is immersed in and coated with coating mixture containing carbon black, graphite, flame resistant agent, mildew resistant agent, dispersing agent, leveling agent, solvent and other filling material in thermoplastic urethane resin to produce a camouflage textile having a total weight of 125g/D and with electric plating fibers.
- an non-electrolytic plated conductive yarn for which an acrylonitrile based acryl fiber is reacted with copper sulfate, wherein the conductive yarn has 10 "1 to 10 "2 ⁇ -cm in specific resistance and a yarn fineness 150 (ELEX available from Hanil Synthetic Fiber Co.).
- Warps and wefts are produced by combining two plies of the non-electrolytic plated conductive yarns having a yarn fineness 75 deniers with high tenacity polyester multifilament yarns having a yarn fineness 300 deniers by interlacing to produce yarns having a total yarn fineness 450 deniers.
- the base yarns are woven with the produced warps and wefts by means of a warp knitting machine, wherein the warp density is set to 9 plies per 2.54cm and the weft density is set to 10 plies per 2.54cm to produce a fabric with X-flat organization structure and having a weight of about 60g/D.
- the produced resultant fabric is immersed in and coated with a coating mixture containing carbon black, graphite, flame resistant agent, mildew resistant agent, dispersing agent, leveling agent, solvent and other filling material in thermoplastic urethane resin to produce a camouflage textile having a total weight of 126g/D.
- Table 1 shows a method and result of testing camouflage capability and chemical and physical properties for the camouflage texture made of non-electrolytic plated fiber produced according to the above embodiments 1 and 2.
- the attenuation rate required for a camouflage net is 3dB or more, specified in the Military Specification of USA.
- the camouflage texture produced with the non-electrolytic plated fiber according to the embodiments 1 and 2 exhibited the attenuate rate 4.41 to 8.24dB which is higher than the specification, and also exhibited effective rates of attenuation in the millimeter wavelength range (frequencies 35, 94+ IGHz) as well as in centimeter wavelength range (frequencies 6, 10, 17+ IGHz).
- a knitted synthetic fabric of 6OgAl is produced with polyester multifilament yarns as base yarns having a yarn fineness 150 deniers and with polyester multifilament yarns of high tenacity having yarn fineness 500 deniers as warps and wefts by means of a warp knitting machine, wherein the density of warps and wefts is set to 9 plies per 2.54cm.
- nickel which occupies 3% of the fiber weight is deposited by non- electrolytic plating to implement conductivity.
- This resultant fabric deposited with nickel is immersed in and coated with a coating mixture containing carbon black, graphite, flame resistant agent, mildew resistant agent, leveling agent, solvent and other filling material in thermoplastic urethane resin and the resultant fabric is subsequently hot-air-dried to produce a camouflage texture with the non-electrolytic plated fiber to have total processed weight 126g/D.
- a knitted synthetic fabric of 60g/D is produced with polyester multifilament yarns as base yarns having a yarn fineness 150 deniers and with polyester multifilament yarns of high tenacity having a yarn fineness 500 deniers as warps and wefts by means of a warp knitting machine, wherein the density of warps and wefts is set to 9 plies per 2.54cm.
- nickel-copper which occupies 5% of the fabric weight is deposited by non-electrolytic plating to implement conductivity.
- This resultant fabric deposited with nickel-copper is immersed in and coated with a coating mixture containing carbon black, graphite, flame resistant agent, mildew resistant agent, leveling agent, solvent and other filling material in thermoplastic urethane resin and the resultant fabric is subsequently hot-air-dried to produce a camouflage texture with the non-electrolytic plated fabric to be 126g/D in total processed weight.
- Table 2 shows the method and result of testing camouflage capability and chemical and physical properties for the camouflage texture with the non-electrolytic plated fabrics produced according to the above embodiments 3 and 4.
- the radar attenuation rate required for a camouflage net is 3dB or more, specified in the Military Specification of USA.
- the camouflage texture produced with the non-electrolytic plated fabrics according to the above embodiments 3 and 4 exhibited the attenuation rate of 5.65 to 12.22dB which is higher than the specification, and also exhibited effective rates of attenuation in the millimeter wavelength range (frequencies 35, 94+ IGHz) as well as in centimeter wavelength range (frequencies 6, 10, 17+ IGHz).
- camouflage material with respect to physical properties of breaking strength, tensile strength, flame resistance and mildew resistance, as well as camouflage capability.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Knitting Of Fabric (AREA)
Abstract
The invention concerns a camouflage texture with conductive yarns or fibers produced by non-electrolytic plating, and more particularly relates to a camouflage texture that can be used as a material for military camouflage nets having superior physical properties such as breaking strength, tensile strength, flame resistance and mildew resistance as well as that can avoid desorption of coating chemicals when a conductive mixture is applied on the conventional synthetic fiber, that can implement not only attenuation characteristics both for centimeter wave and millimeter wave radar region but also camouflage characteristics with respect to thermal infrared signal. To this end, the camouflage texture according to the invention is characterized by comprising: a fabric made of combined yarns having a yarn fineness 140 to 650 deniers, wherein the combined yarns are made by combining non-electrolytic plated conductive yarns of a yarn fineness 50 to 150 deniers and having 10-1 to 10-2 Ω-cm in specific resistance with synthetic yarns such as polyester or nylon yarns by means of interlacing, and wherein the combined yarns having above 300 deniers are used as warps and wefts having a density of 9 to 12 plies per 2.54cm and the combined yarns having fineness 150 deniers or less are used as base yarns to weave fabric with X-flat or S-flat structure to have a weight of 40g/ to 80g/; and thermoplastic resin mixture like as urethane resin, acryl resin and polyvinyl chloride resin, applied on the fabric.
Description
Description
CAMOUFLAGE TEXTILE WITH NON-ELECTROLYTIC
PLATED FIBER
Technical Field
[1] The present invention relates to a camouflage texture with conductive yarns or fibers by non-electrolytic plating, and, more particularly, to a camouflage texture for camouflage nets which can avoid desorption of plated chemicals, give attenuation capability both for centimeter wave and millimeter wave radar region, achieve camouflage capability for thermal infrared rays, having superior chemical and physical properties such as breaking strength, tensile strength, flame resistance, mildew resistance, etc., as compared to conventional camouflage textures produced by coating conventional synthetic fibers with conductive coating mixtures.
[2]
Background Art
[3] With the development of sensors for military monitoring system and target hitting, current camouflage nets require camouflage capability in a very wide band on the electromagnetic spectrum. In particular, with the development of smart bombs mounted with a millimeter wave radar and an infrared target-tracing sensor, camouflage capability is required for the millimeter wave radars and thermal infrared signals.
[4] Required radar characteristics, thermal infrared transmittance and chemical properties as a material for military camouflage nets are specified in Korea Military Specification 1080-1003, Military Specification of MIL-C-53004, MIL-PRF-53134, etc.
[5] The mechanism achieving radar characteristics in the camouflage material in fiber used for the camouflage nets is to apply camouflage characteristics by attenuating echo radar signals resulting from dipole polarization scattering of the incoming radar signals after forming a closed dipole element circuit regularly spaced (1/2 wavelength to 1/4 wavelength) on a woven fabric or non- woven fabric with electromagnetic material, that is conductive fibers, conductive coating chemicals, to give impedance for the radar waves. The material in fiber in which camouflage characteristics are implemented is used as a material constituting camouflage nets. Also, in order to implement camouflage capability for thermal infrared observation facilities, the transmissivity of the thermal infrared rays radiated from a camouflaged object must be controlled with a specific structure. And, thermal radiation of the camouflaging material itself, namely a specific emissivity thereof must be implemented.
[6] As a conventional technology to implement camouflage capability, US Patent
3,733,606 discloses a method of producing camouflage textures, consisting of producing a synthetic fabric by embedding single stainless steel fibers of a given length and a diameter in a woven fabric or a non-woven fabric to produce a synthetic fabric, and thereby of combining the fabric with a thermoplastic film in camouflage color or applying the thermoplastic polymer film to the fabric to produce a camouflage texture. The method, however, is to produce a camouflage texture by embedding the single conductive fibers by scattering and has a disadvantage that the radar characteristics are not uniform, the texture does not exhibit camouflage capability in the military millimeter wave radar region (35, 94+ IGHz) because it is used as a camouflage texture having given apertures shaped in tree leaves, and it doesn't implement camouflage capability with respect to thermal infrared rays. As still another conventional technology, Korea Patent Registration No.91794 discloses, in 'Method of producing a camouflage textile for super wide band radar waves', a method of producing a camouflage textile with radar characteristics by scattering and attaching carbon fibers to a textile, using an electrostatic flocking machine. As still another technology, Korea Patent Registration No. 106073 discloses, in 'Camouflage textile for super wide band radar waves', a method of producing a camouflage textile with radar characteristics by embedding aluminum deposited film yarns in a fabric at given intervals to weave the camouflage textile.
[7] The aforementioned methods, however, have disadvantages of excessive facility investment in the process of applying thermoplastic resin in camouflage color, and difficulty in weight control, in order to use the resultant textile as a camouflage material. With the resultant textile according to the aforementioned methods as a camouflage material, it is impossible to implement camouflage capability with respect to thermal infrared rays.
[8] In addition, the method of applying electromagnetic characteristics on a fabric in order to produce a camouflage material with radar characteristics includes lamination of metal foils, coating of conductive chemicals, ion electrode sputtering, vacuum coating, and plasmatic discharging. However, it has been known that it is impossible to practically use the textile produced according to the aforementioned methods, as a material for camouflage nets because of many difficulties including process conditions, facility investment, physical property control, etc. In particular, the method of coating conductive chemicals has many problems. For example, since a specific amount of the conductive elements such as graphite, nickel, ferrite, iron and the like must be dispersed in thermoplastic resin as a filling material when producing the coating chemicals in order to satisfy the conductivity (surface resistance of about 500Ω/D or less) allowable for a camouflage material, the coating chemicals may be desorbed due to the limit in the filling material ratio after applying the coating chemicals. Therefore,
the method is not suitable for producing a camouflage texture to be used in military camouflage nets.
[9]
Disclosure of Invention Technical Problem
[10] The inventors had an idea to address the aforementioned problems. It is an object of the present invention to provide a camouflage texture, with non-electrolytic plated fibers which can avoid chemical desorption resulting from cohesion and adhesiveness capability of the applied chemicals, by embedding more than a specific amount of conductive elements in powder in order to obtain a given surface resistance when applying a conductive mixture (graphite dispersed conductive coating chemical, etc.) to a conventional synthetic fabric.
[11] Also, it is another object of the invention to provide a camouflage texture that can achieve attenuation in the radar region for both centimeter waves (6+ 1, 10+ 1, 17+ IGHz) and millimeter waves (35+ 1, 94+ IGHz) and can also achieve camouflage capability with respect to thermal infrared signals, and that can be used as a material for camouflage nets having superior chemical and physical properties, for example, breaking strength, tensile strength, flame resistance and mildew resistance as well as camouflage capability.
[12] The camouflage texture according to one embodiment of the invention to achieve the above object is characterized in that it comprises a fabric and thermoplastic resin mixture of urethane resin mixture, acryl resin mixture or polyvinyl chloride resin mixture, applied to the fabric. Here, the fabric is produced with combined yarns having a yarn fineness 140 to 650 deniers, wherein the combined yarns are produced by combining non-electrolytic plated conductive yarns having a yarn fineness 50 to 150 deniers and 10"1 to 10"2 Ω-cm in specific resistance with synthetic yarns such as polyester or nylon yarns by interlacing.
[13] The combined yarns having a yarn fineness 300 deniers are used as warps and wefts to have a density of 9 to 12 plies per 2.54cm. The combined yarns having a yarn fineness 150 deniers or less are used as base yarns to weave a texture with X-flat or S- flat structure by means of a warp knitting machine. Accordingly the invention is characterized in that the resultant camouflage texture has a weight of 40g/D to 80g/D.
[14] Preferably, the invention is characterized in that the weight of the camouflage texture with the non-electrolytic plated fiber ranges from lOOg/D to 140g/D.
[15] More preferably, the invention is characterized in that the chemical characteristics of the camouflage texture with the non-electrolytic plated fiber comply with Military Specification of MIL-PRF-53134; the camouflage texture has an attenuation rate of
3dB or more (50% or less in transmission) when a radar attenuation rate in general transmission is measured in the radar wave region of frequencies 6+ 1, 10+ 1, 17+ 1, 35+ 1, 94+ 1 GHz; and the transmittance thereof is 50% or less in the infrared rays region of 3 to 5D and 8 to 15D in wavelength.
[16] The camouflage texture according to another embodiment of the invention to achieve the aforementioned object is characterized in that it comprises a specific fabric and thermoplastic resin mixture like as urethane resin, acryl resin and polyvinyl chloride resin, applied on the fabric. Here, the fabric is woven with base yarns of synthetic multi-filament yarns of nylon or polyester having a yarn fineness 50 to 200 deniers and with warps and wefts of high tenacity yarns made of nylon or polyester having a yarn fineness 300 to 750 deniers, wherein the density of the warps and wefts is set to 9 to 12 plies per 2.54cm to produce the specific fabric with X-flat or S-flat structure by means of a warp knitting machine. Subsequently, on the surface of the fabric, conductive metals such as nickel, copper, iron, etc. are deposited by non- electrolytic plating to produce an inventive texture. The camouflage texture also has a surface resistance of 600Ω/D or less and a weight of 40g/D to 80g/D.
[17] Preferably, the invention is characterized in that the weight of the camouflage texture with the non-electrolytic plated fiber ranges from lOOg/D to 140g/D.
[18] More preferably, the invention is characterized in that the chemical characteristics of the camouflage texture with the non-electrolytic plated fiber comply with Military Specification of MIL-PRF-53134; the camouflage texture has an attenuation rate of 3dB or more (50% or less in transmission) when a radar attenuation rate in general transmission is measured in the radar wave region of frequencies 6+ 1, 10+ 1, 17+ 1, 35+ 1, 94+ 1 GHz; and the transmittance thereof is 50% or less in the infrared rays region of 3 to 5D and 8 to 15D in wavelength.
[19]
Brief Description of the Drawings
[20] These and other features, aspects, and advantages of the present invention will become apparent from reading the following description, being made with reference to the appended drawings. In the drawings:
[21] Fig. 1 is a configuration of a camouflage texture in which non-electrolytic plated conductive yarns are embedded according to one embodiment of the invention;
[22] Fig.2 is a configuration of yarns embedded with non-electrolytic plated conductive yarns of Fig.1 ; and
[23] Fig.3 is a configuration of a camouflage texture produced with an non-electrolytic plated conductive fabric according to another embodiment of the invention.
Best Mode for Carrying Out the Invention
[25] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[26] It will be apparent to those skilled in the art that those inventive embodiments are only intended to describe the invention more specifically, but the scope of the invention is not limited to those embodiments according to the teaching of the invention.
[27] Fig.l is a configuration of a camouflage texture in which non-electrolytic plated conductive yarns are embedded according to one embodiment of the invention. Fig.2 is a configuration of combined yarns with the non-electrolytic plated conductive yarns of Fig.l.
[28] The term non-electrolytic plating used herein is a method of chemical plating to implement conductivity without losing the characteristics of synthetic fibers. It is thus a method of processing fibers, comprising the steps of immersing a general synthetic fiber in a solution containing sodium hydrate and nonionic surfactant to remove impurities, etching the fiber surface in a strong alkaline or strong acid solution, immersing the resultant fiber in a mixture solution of hydrochloric acid with palladium chloride, tin chloride, kalium chloride and subsequently washing it with water, and then immersing the fiber in a alkaline solution to remove remaining tin, kalium and the like. Subsequently the resultant fiber is immersed in a mixture solution of sodium hydrate, Rochelle salt and formaldehyde, containing copper sulfate, nickel chloride and iron sulfate, then washed with water and dried to form a conductive metal film on the fiber surface.
[29] The fabric woven with such non-electrolytic plated yarns allows easy conductivity control depending on the type and the amount of metal elements used in plating and also allows easy thickness and weight control depending on the thickness of a base fiber. Since the fabric has inherent characteristics of a synthetic fiber, it is thus possible to use various conventional weaving machines when weaving the fabric, so that it is a very useful method to produce a characteristic camouflage material in fiber.
[30] As seen in Fig.l, the camouflage texture 1 with the non-electrolytic plated fiber according to one embodiment of the invention comprises a fabric 4 woven by means of a warp knitting machine and thermoplastic mixture 3 applied on the fabric 4. The thermoplastic mixture 3 is based on urethane resin, acryl resin or polyvinyl chloride resin, etc. For example, the thermoplastic urethane resin mixture contains carbon black, graphite, flame resistant agent, mildew resistance agent, dispersing agent, leveling agent, solvent and other filling material, etc. The fabric 4 has a X-flat or S-flat structure woven with combined yarns 2 by means of a warp-knitting machine. The
combined yarns 2 are produced by combining non-electrolytic plated yarns 8 with synthetic fibers 9, for example polyester or nylon yarns, by interlacing, wherein the
1 9 conductive yarns 8 have a yarn fineness 50 to 150 deniers and 10" -10" Ω-cm in specific resistance, and the resultant combined yarns 2 have a yarn fineness of 140 to 650 deniers (see Fig.2). The combined yarns 2 having a yarn fineness 300 deniers or more are used as warps 5 and wefts 6 with a density of 9 to 12 plies per 2.54cm and the combined yarns having a yarn fineness 150 deniers or less are used as base yarns 7 to produce a texture with specific X-flat or S-flat structure.
[31] Preferably, the weight of the fabric 4 ranges 40g/D to 80g/D. This is because, if the fabric weight is less than 40g/D, it lacks durability such as chemical and physical properties of tensile strength, tearing strength and breaking strength, required as a material for camouflage nets in fiber. If the fabric weight is more than 80g/D, the increased weight causes inconvenience in operation.
[32] It is preferred that the weight of a camouflage textile made of the non-electrolytic plated fiber according to the invention ranges lOOg/D to 140g/D. This is because the weight in basic physical properties for a military camouflage net is an important regulatory issue and because, if the weight is less than lOOg/D, it is hard to meet the basic physical properties, and, if it is more than 140g/D, it causes unnecessary overweight. Preferably, the chemical characteristics of a camouflage texture with the non-electrolytic plated fibers according to one embodiment of the invention meets the Military Specification of MIL-PRF-53134. Also, preferably, the texture has an attenuation rate of 3dB (50% or less in transmission) when the radar attenuation rate in general transmission is measured in the radar wave region of frequencies 6+ 1, 10+ 1, 17+ 1, 35+ 1 and 94+ 1 GHz, and has a transmittance of 50% or less in the infrared region of 3 to 5D and 8 to 15D in wavelength.
[33] Fig.3 is a configuration of a camouflage texture with non-electrolytic plated conductive fibers according to another embodiment of the invention. As shown in Fig.3, the camouflage texture 11 according to another embodiment of the invention comprises conductive synthetic fabric 12 produced by non-electrolytic plating and thermoplastic mixture 13 applied on the fabric. The thermoplastic mixture 13 is the same resin mixture as used in the above embodiment.
[34] The conductive synthetic fabric 12 made by non-electrolytic plating consists of base yarns 17 of synthetic multifilament yarns, such as nylon or polyester yarns having a yarn fineness 50 to 200 deniers and of warps 15 and wefts 16 of high tenacity nylon or polyester yarns having a yarn fineness 300 to 750 deniers. The density of the warps and wefts is set to be 9 to 12 plies per 2.54cm. A specific fabric having X-flat or S-flat structure is woven by means of a warp-knitting machine. On the surface of the woven fabric 4, conductive metals such as nickel, copper, iron, etc. are deposited by means of
non-electrolytic plating, to have surface resistance of 600Ω/D or less. [35] Hereinafter, by exemplifying embodiments, the invention will be described in detail.
[36] [Embodiment 1]
[37] In order to make a fabric, a base yarn is first produced, by means of interlacing, with non-electrolytic plated conductive yarns for which an acrylonitrile based acryl fiber is reacted with copper sulfate, and polyester multifilament yarns having a yarn
1 9 fineness 68 deniers, wherein the conductive yarn has 10" to 10" Ω-cm in specific resistance and a yarn fineness 75 deniers (ELEX available from Hanil Synthetic Fiber Co.) and wherein the resultant produced base yarns have a total yarn fineness 143 deniers. Two plies of the above non-electrolytic plated conductive yarns having a yarn fineness 75 deniers are combined with the high tenacity polyester multifilament yarns having a yarn fineness 300 deniers by interlacing to produce warps and wefts having a total yarn fineness 450 deniers. Thereafter, the base yarns are woven with the produced warps and wefts by means of a warp knitting machine, wherein the warp density is set to 9 plies per 2.54cm and the weft density is set to 10 plies per 2.54cm to produce a fabric with X-flat structure and having a weight of about 59g/D. The produced resultant fabric is immersed in and coated with coating mixture containing carbon black, graphite, flame resistant agent, mildew resistant agent, dispersing agent, leveling agent, solvent and other filling material in thermoplastic urethane resin to produce a camouflage textile having a total weight of 125g/D and with electric plating fibers.
[38] [Embodiment 2]
[39] In order to produce a fabric, as the base yarn an non-electrolytic plated conductive yarn is used for which an acrylonitrile based acryl fiber is reacted with copper sulfate, wherein the conductive yarn has 10"1 to 10"2 Ω-cm in specific resistance and a yarn fineness 150 (ELEX available from Hanil Synthetic Fiber Co.). Warps and wefts are produced by combining two plies of the non-electrolytic plated conductive yarns having a yarn fineness 75 deniers with high tenacity polyester multifilament yarns having a yarn fineness 300 deniers by interlacing to produce yarns having a total yarn fineness 450 deniers.
[40] Thereafter, the base yarns are woven with the produced warps and wefts by means of a warp knitting machine, wherein the warp density is set to 9 plies per 2.54cm and the weft density is set to 10 plies per 2.54cm to produce a fabric with X-flat organization structure and having a weight of about 60g/D. The produced resultant fabric is immersed in and coated with a coating mixture containing carbon black, graphite, flame resistant agent, mildew resistant agent, dispersing agent, leveling agent, solvent and other filling material in thermoplastic urethane resin to produce a camouflage textile having a total weight of 126g/D.
[41] Table 1 shows a method and result of testing camouflage capability and chemical and physical properties for the camouflage texture made of non-electrolytic plated fiber produced according to the above embodiments 1 and 2.
[42]
[Table 1 ]
[43] [44] As seen in Table 1, the attenuation rate required for a camouflage net is 3dB or more, specified in the Military Specification of USA. To comply with the specification, the camouflage texture produced with the non-electrolytic plated fiber according to the embodiments 1 and 2 exhibited the attenuate rate 4.41 to 8.24dB
which is higher than the specification, and also exhibited effective rates of attenuation in the millimeter wavelength range (frequencies 35, 94+ IGHz) as well as in centimeter wavelength range (frequencies 6, 10, 17+ IGHz). We could obtain satisfactory result applicable for a camouflage material with respect to physical properties of breaking strength, tensile strength, flame resistance and mildew resistance, as well as camouflage capability.
[45]
[46] [Embodiment 3]
[47] A knitted synthetic fabric of 6OgAl is produced with polyester multifilament yarns as base yarns having a yarn fineness 150 deniers and with polyester multifilament yarns of high tenacity having yarn fineness 500 deniers as warps and wefts by means of a warp knitting machine, wherein the density of warps and wefts is set to 9 plies per 2.54cm.
[48] On this fabric, nickel which occupies 3% of the fiber weight is deposited by non- electrolytic plating to implement conductivity. This resultant fabric deposited with nickel is immersed in and coated with a coating mixture containing carbon black, graphite, flame resistant agent, mildew resistant agent, leveling agent, solvent and other filling material in thermoplastic urethane resin and the resultant fabric is subsequently hot-air-dried to produce a camouflage texture with the non-electrolytic plated fiber to have total processed weight 126g/D.
[49]
[50] [Embodiment 4]
[51] A knitted synthetic fabric of 60g/D is produced with polyester multifilament yarns as base yarns having a yarn fineness 150 deniers and with polyester multifilament yarns of high tenacity having a yarn fineness 500 deniers as warps and wefts by means of a warp knitting machine, wherein the density of warps and wefts is set to 9 plies per 2.54cm.
[52] On this fabric, nickel-copper which occupies 5% of the fabric weight is deposited by non-electrolytic plating to implement conductivity. This resultant fabric deposited with nickel-copper is immersed in and coated with a coating mixture containing carbon black, graphite, flame resistant agent, mildew resistant agent, leveling agent, solvent and other filling material in thermoplastic urethane resin and the resultant fabric is subsequently hot-air-dried to produce a camouflage texture with the non-electrolytic plated fabric to be 126g/D in total processed weight.
[53] Table 2 below shows the method and result of testing camouflage capability and chemical and physical properties for the camouflage texture with the non-electrolytic plated fabrics produced according to the above embodiments 3 and 4.
[54]
[Table 2]
[55] As seen in Table 2, the radar attenuation rate required for a camouflage net is 3dB or more, specified in the Military Specification of USA. To comply with the specification, the camouflage texture produced with the non-electrolytic plated fabrics according to the above embodiments 3 and 4 exhibited the attenuation rate of 5.65 to 12.22dB which is higher than the specification, and also exhibited effective rates of attenuation in the millimeter wavelength range (frequencies 35, 94+ IGHz) as well as in centimeter wavelength range (frequencies 6, 10, 17+ IGHz). We could obtain satisfactory result applicable for a camouflage material with respect to physical properties of breaking strength, tensile strength, flame resistance and mildew resistance, as well as camouflage capability.
[56] Only some embodiments among various production methods and analysis test, carried out by the inventors, are exemplified in this description, but it should be noted that the technological spirit of the invention can be modified and carried out by those skilled in the art, without being limited to aforementioned embodiments.
[57]
Claims
[1] A camouflage texture with non-electrolytic plated fiber, characterized by comprising: a fabric produced with combined yarns having a yarn fineness 140 to 650 deniers, wherein the combined yarns are made by combining non-electrolytic plated conductive yarns of a yarn fineness 50 to 150 deniers and having specific
1 9 resistance 10" to 10" Ω-cm with synthetic yarns such as polyester or nylon yarns by interlacing; wherein the combined yarns having a yarn fineness 300 deniers or more are used as warps and wefts having a density of 9 to 12 plies per 2.54cm, and the combined yarns having a yarn fineness 150 deniers or less are used as base yarns to weave X-flat or S-flat structure fabric by means of a warp knitting machine; and wherein the resultant fabric has a weight of 40g/D to 80g/D; and thermoplastic resin mixture of urethane resin mixture, acryl resin mixture or polyvinyl chloride mixture, applied on the fiber.
[2] The camouflage texture as claimed in claim 1, characterized in that the weight of the camouflage texture with the non-electrolytic plated fiber ranges from lOOg/D to 140g/D.
[3] The camouflage texture as claimed in claim 1 or 2, characterized in that the chemical and physical characteristics of the camouflage texture with the non- electrolytic plated fiber comply with Military Specification of MIL-PRF-53134; the camouflage texture has a radar attenuation rate of 3dB or more (50% or less in transmission) when a radar attenuation rate in general transmission is measured in the radar wave region of frequencies 6+ 1, 10+ 1, 17+ 1, 35+ 1 and 94+ 1 GHz; and the thermal transmittance thereof is 50% or less in the infrared rays region of 3 to 5D and 8 to 15D in wavelength.
[4] A camouflage texture, characterized by comprising: a fabric, wherein the specific fabric is woven with base yarns of synthetic multi-filament yarns of nylon or polyester having a yarn fineness 50 to 200 deniers and with warps and wefts of nylon or polyester yarns of high tenacity having a yarn fineness 300 to 750 deniers, wherein the density of the warps and wefts is set to 9 to 12 plies per 2.54cm to produce the specific fabric in X-flat or S-flat structure by means of a warp
knitting machine, and subsequently, on the surface of the fiber, conductive metals such as nickel, copper, iron, etc. are deposited by non-electrolytic plating to produce a resultant fabric having a surface resistance 600Ω/D or less and a weight of 40g/D to 80g/D; and thermoplastic resin mixture like as urethane resin, acryl resin and polyvinyl chloride resin, applied on the fiber.
[5] The camouflage texture as claimed in claim 4, characterized in that the weight of the camouflage texture with the non-electrolytic plated fiber ranges from lOOg/D to 140g/D.
[6] The camouflage texture as claimed in claim 4 or 5, characterized in that the chemical and physical characteristics of the camouflage texture with the non- electrolytic plated fiber comply with Military Specification of MIL-PRF-53134; the camouflage texture has a radar attenuation rate of 3dB or more (50% or less in transmission) when a radar attenuation rate in general transmission is measured in the radar wave region of frequencies 6+ 1, 10+ 1, 17+ 1, 35+ 1 and 94+ 1 GHz; and the thermal transmission thereof is 50% or less in the infrared rays region of 3 to 5D and 8 to 15D in wavelength.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020050123096A KR100775127B1 (en) | 2005-12-14 | 2005-12-14 | Camouflage textile using electroless plating fiber |
| KR10-2005-0123096 | 2005-12-14 |
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| WO2007069803A1 true WO2007069803A1 (en) | 2007-06-21 |
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| PCT/KR2006/000297 WO2007069803A1 (en) | 2005-12-14 | 2006-01-26 | Camouflage textile with non-electrolytic plated fiber |
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| WO (1) | WO2007069803A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US8013776B2 (en) * | 2007-05-07 | 2011-09-06 | Milliken & Company | Radar camouflage fabric |
| CN102493118A (en) * | 2010-12-08 | 2012-06-13 | 浙江高达新材料有限公司 | Warp-knitted fishnet capable of shielding microwave |
| JP2012200936A (en) * | 2011-03-24 | 2012-10-22 | Toray Ind Inc | Fabric for far-infrared camouflage, and method of manufacturing the same |
| WO2017099688A1 (en) * | 2015-12-09 | 2017-06-15 | Oztek Tekstil Terbiye Tesisleri Sanayi Ve Tic. A.S. | A concealment cover |
| CN112626669A (en) * | 2020-12-08 | 2021-04-09 | 浙江理工大学 | Preparation method of camouflage fabric based on weaving process, product and application thereof |
| EP4097282A4 (en) * | 2020-01-28 | 2024-05-15 | Noble Biomaterials Inc | Metalized fabric that dissipates and scatters infrared light and methods of making and using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100935182B1 (en) * | 2007-11-22 | 2010-01-06 | (주)메인일렉콤 | Method for manufacturing conductive fiber for electromagetic waves insulition for preventing surface corrosion and oxidation and the conductive fiber |
| KR101052597B1 (en) | 2011-03-24 | 2011-07-29 | 삼양화학공업주식회사 | Non-cooperative target distinguishing between friend and foe armament for thermal observation device using electroless plating fiber |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20070063147A (en) | 2007-06-19 |
| KR100775127B1 (en) | 2007-11-08 |
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