U.S. patent application number 14/232311 was filed with the patent office on 2014-06-05 for camouflage fabric having near infrared ray reflectance adjusting characteristics.
The applicant listed for this patent is Rae Young Jang. Invention is credited to Rae Young Jang.
Application Number | 20140154482 14/232311 |
Document ID | / |
Family ID | 47506697 |
Filed Date | 2014-06-05 |
United States Patent
Application |
20140154482 |
Kind Code |
A1 |
Jang; Rae Young |
June 5, 2014 |
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.
Inventors: |
Jang; Rae Young;
(Gyeonggi-do, KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Jang; Rae Young |
Gyeonggi-do |
|
KR |
|
|
Family ID: |
47506697 |
Appl. No.: |
14/232311 |
Filed: |
July 10, 2012 |
PCT Filed: |
July 10, 2012 |
PCT NO: |
PCT/KR2012/005472 |
371 Date: |
January 13, 2014 |
Current U.S.
Class: |
428/196 ;
252/589; 428/221; 442/189 |
Current CPC
Class: |
D03D 1/0047 20130101;
D10B 2401/16 20130101; Y10T 428/249921 20150401; F41H 3/02
20130101; D06M 11/42 20130101; Y10T 442/3065 20150401; Y10T
428/2481 20150115; F41H 3/00 20130101 |
Class at
Publication: |
428/196 ;
252/589; 428/221; 442/189 |
International
Class: |
D03D 1/00 20060101
D03D001/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 11, 2011 |
KR |
10-2011-0068211 |
Claims
1. A camouflage fabric with near infrared ray reflectance adjusting
characteristics, comprising a conductive synthetic polymer material
that is coordinate-bonded to polyamide reformed such that metal
sulfide nanoparticles comprising copper sulfide or copper sulfide
nanoparticles have a metal capturing functional group by a silane
coupling agent containing imidazole and mercapto group, wherein
contents of the conductive synthetic polymer material comprise
about 0.1 wt % to about 3 wt % element copper and element
additional metal with respect to a total weight thereof such that a
near infrared ray reflectance of the conductive synthetic polymer
material is equal or similar to near infrared ray reflectances of
surrounding objects in a near infrared ray spectrum of about 720 nm
to about 1,500 nm.
2. The camouflage fabric of claim 1, wherein the conductive
synthetic polymer material, which contains metal sulfide
nanoparticles comprising copper sulfide or copper sulfide
nanoparticles in addition to the polyamide polymer matrix improved
so as to have the metal capturing functional group by the silane
coupling agent containing the imidazole and mercapto group, and a
conductive metal sulfide nanoparticle composition comprising the
copper sulfide or the copper sulfide nanoparticles comprises about
1 wt % to about 30 wt % copper sulphate salt, nickel sulphate salt
and zinc sulphate salt, about 0.05 wt % to about 5 wt %
hydroquinone, about 0.05 wt % to about 1.5 wt % mercaptoacetic
acid, about 0.1 wt % to about 10 wt % ethylene diamine, about 0.1
wt % to about 10 wt % sodium thiosulfate, about 0.01 wt % to about
1 wt % hydroxylamine sulfate, and about 2 wt% to about 5 wt %
pH-conditioning agent with respect to 100 wt % of the reformed
polyamide fiber to be coated.
3. The camouflage fabric of claim 1, comprising: a conductive
multifilament yarn of about 30 denier to about 150 denier
containing metal sulfide nanoparticles comprising copper sulfide or
copper sulfide nanoparticles, which controls the near infrared ray
reflectance characteristics by allowing the metal sulfide
nanoparticles comprising copper sulfide or copper sulfide
nanoparticles with near infrared ray reflectance adjusting
characteristics to be coordinate-bonded to the polyamide reformed
so as to have the metal capturing functional group by the silane
coupling agent containing the imidazole and mercapto group; and two
types of synthetic polymer multifilament yarns comprising: a first
multifilament yarn of a total of about 250 denier to about 350
denier in which a multifilament yarn of a polymer matrix of about
150 denier to about 350 denier without a component capable of
controlling the near infrared ray reflectance characteristics is
twisted at about 300 T/M to about 400 T/M using a twisting machine;
and a second multifilament yarn of a total of about 250 to about
350 denier which does not substantially comprises the component
capable of controlling the near infrared ray reflectance
characteristics.
4. The camouflage fabric of claim 3, wherein the two type of
filament yarns are woven in warp and weft directions 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.
5. The camouflage fabric of claim 3, printed with a dye so as to
have certain pattern and color in a visible ray spectrum.
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 similar to colorful natural backgrounds in the
spectral reflectance in a near infrared spectrum in which a near
infrared ray wavelength band ranges about 720 nm to about 1,500 nm.
Also, since metal sulfide nanoparticles including copper sulfide
and copper sulfide nanoparticles have antimicrobial properties and
conductive properties, the camouflage fabric, which has superior
physiochemical properties and naturally exhibits antimicrobial
properties and antistatic properties even without a separate
post-treatment, can be provided.
Background Art
[0003] Generally, the probability of military personnel, vehicles,
equipment, structures etc., so called `targets,` surviving in the
battlefield is directly related to the capability of responsive
measure that can minimize all threats thereto.
[0004] 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.
[0005] In order for the target to conceal itself from the detection
by a near infrared ray observation device at night, clothes must
camouflage itself by having an equal or similar level of near
infrared ray reflectance to those of surrounding objects, within
the near infrared ray wavelength region of 720 nm to 1,500 nm,
whereas the effective camouflaging to avoid detection by naked eye
or visible ray detection equipment during the day can be achieved
by applying a color camouflage that is performed in 380 nm to 720
nm spectrum, i.e., visible ray region.
[0006] Accordingly, in order for a camouflage to be equally
effective at both day and night, clothes must have the pattern,
color, brightness and chroma resembling its surroundings, which
will successfully conceal the target by making it difficult to be
detected within the area of visible ray during the day, and clothes
must have the level of near infrared ray reflectance equal or
similar to those of the surroundings, in consideration of the near
infrared ray wavelength region used by the near infrared
observation device used at night.
[0007] The near infrared detection wavelength region of the near
infrared observation device used to range from 600 nm to 860 nm,
but the recent technical development allows its maximum range to be
extend to 1,000 nm to 1,500 nm.
[0008] This results from the development of electronic equipment
that can detect a wider region than the existing military
equipment.
[0009] Since there are various environments throughout the world,
many different camouflaging materials, including both visible and
invisible, are available.
[0010] The various environments (for example, from forests to
deserts) require the use of various colors and patterns.
[0011] For example, the camouflaging materials used by military in
the visible ray region and in the forest usually use four colors of
black, brown, green and bright green.
[0012] On the other hand, the camouflaging materials in the desert,
during the day, usually use three colors of brown, khaki and
yellowish brown.
[0013] The fibers with camouflaging patterns for visible ray
environment are typically manufactured by printing the camouflaging
patterns on the surface of undyed greige fiber or by
solution-dyeing the spun yarn that is successively woven or knitted
into the camouflaging patterns by, e.g., a jacquard process.
[0014] However, the materials must be processed differently from
those in the visible ray region, to avoid the detection by near
infrared observation devices during a night combat.
[0015] The near infrared camouflage fabric, which means an
invisible camouflaging material for the night time, means a fabric
that allows a wearer to avoid detection by near infrared night
observation device by allowing the fabric to have a near infrared
ray reflectance similar to that of its surrounding environment.
[0016] This fabric has a very important value in the modern war due
to the development of near infrared night observation devices.
[0017] A method of manufacturing a typical near infrared camouflage
fabric is as follows.
[0018] In order to achieve a desired camouflage simultaneously in
both the visible ray and near infrared ray, a printing process is
performed on a fiber that is not dyed by an existing method or dyed
in base color to achieve a level of both near infrared reflectance
and color for day and night times.
[0019] Most typically, the near infrared reflectance of fiber is
changed by adding an adequate amount of carbon black and near
infrared ray absorbing pigment to the camouflage print ink and
paste.
[0020] 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.
[0021] Particularly, since washing-off and peeling-off can easily
occur in spite of local carbon finishing, the fiber treated as such
can provide only a low-level durability in terms of concealing
performance against the near infrared detection.
[0022] Also, the organic pigments among near infrared ray absorbing
pigments, such as diimmonium, polymethine, metal complex, squarium
type, and cyanine, mainly absorb the wavelength of 800 nm to 1,100
nm, but their near infrared ray absorption performance in the
wavelength band equal to or greater than 1,100 nm is significantly
reduced and their weatherproof performances of physicochemical
characteristics may be significantly reduced because the pigments
are seceded when repeatedly washed. 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.
DISCLOSURE
Technical Problem
[0023] The present invention provides a camouflage fabric with near
infrared ray reflectance adjusting characteristics, which 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.
[0024] The present invention also provides a camouflage fabric with
near infrared ray reflectance adjusting characteristics, which can
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.
[0025] The present invention also provides a camouflage fabric with
near infrared ray reflectance adjusting characteristics, which can
be used for military clothes, equipment, tents, and instruments by
providing 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.
Technical Solution
[0026] In accordance with an aspect of the present invention, there
is provided a camouflage fabric with near infrared ray reflectance
adjusting characteristics, characterized in that the near infrared
ray reflectance of the camouflage fabric is equal or similar to the
near infrared ray reflectance of surrounding objects in a near
infrared ray spectrum of about 720 nm to about 1,500 nm using a
conductive synthetic polymer material in which metal sulfide
nanoparticles including copper sulfide or copper sulfide
nanoparticles are coordinated-bonded to a polymer matrix.
Advantageous Effects
[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.
BRIEF DESCRIPTION OF DRAWINGS
[0032] FIG. 1 is a view illustrating results of Near Infrared Ray
Reflectance (NIRR) of camouflage fabrics manufactured according to
first to tenth embodiments of the present invention.
[0033] FIG. 2 is a view illustrating results of NIRR after printing
and rinsing of a camouflage fabric manufactured according to an
eleventh embodiment of the present invention.
[0034] FIG. 3 is a view illustrating results of NIRR after printing
and rinsing of a camouflage fabric manufactured according to a
twelfth embodiment of the present invention; and
[0035] FIGS. 4 to 6 are photographs illustrating a comparison
between a typical combat uniform and a combat uniform manufactured
with a camouflage fabric according to an embodiment of the present
invention.
BEST MODES FOR CARRYING OUT THE INVENTION
[0036] Hereinafter, exemplary embodiments of the present invention
will be described in detail with reference to the accompanying
drawings.
[0037] A camouflage fabric with near infrared ray reflectance
adjusting characteristics may contain copper sulfide nanoparticles
or metal sulfide nanoparticles including copper sulfide at a ratio
of about 0.1 wt % to about 3 wt % with respect to the weight of the
fabric to reduce Near Infrared Ray Reflectance (NIRR).
[0038] That is, a conductive polymer in which copper sulfide
nanoparticles or metal sulfide nanoparticles including copper
sulfide are coordinate-bonded may be used. The conductive polymer
in which copper sulfide nanoparticles or metal sulfide
nanoparticles including copper sulfide are coordinate-bonded may be
an electroconductive material that contains metal sulfide
nanoparticles including copper sulfide bonded to a polymer matrix
containing a group selected from mercapto, thiocarbonyl, quaternary
ammonium salt, and isocyanate.
[0039] Also, the polymer matrix may be selected from polyester,
polyamide (nylon), polyacrylonitrile, cotton, polyvinylchloride
resin, and amino resin.
[0040] In one embodiment, a method of manufacturing
electroconductive polyamide in which copper sulfide nanoparticles
or metal sulfide nanoparticles including copper sulfide are
coordinate-bonded to a polyamide (nylon) polymer matrix having a
mercapto radical introduced with the polymer matrix may include a
first process that is a polyamide reforming process in which a
silane coupling agent of about 500 mg/L to about 5 g/L that is a
molar reaction product such as silane containing a mercapto group
and an azole compound is prepared in an aqueous solution as a
preprocessing agent, and then polyamide of about 25 wt % immerses
in the prepared preprocessing agent solution of about 100 wt % at a
temperature of about 55.degree. C. for about 60 minutes, and then a
non-reaction product is washed out using sodium hydroxide solution
of about 1 wt %, and then dried at an atmospheric temperature of
about 80.degree. C. for about one hour, and then cooled to a room
temperature to reform polyamide into a polyamide polymer matrix
having a mercapto group, and a second process that is a
conductivity forming process in which a polyamide yarn absorbed
with or coordinate-bonded to the mercapto group immerses in a metal
nanoparticle composition including copper sulfide, and then dye
treatment is performed at a temperature of about 55.degree. C. for
about 120 minutes to give conductivity to the polyamide yarn.
[0041] Here, in the second process, the conductive metal sulfide
nanoparticle composition including copper sulfide or copper sulfide
nanoparticles may include about 1 wt % to about 30 wt % copper
salt, nickel salt and zinc salt, about 0.05 wt % to about 5 wt %
phenyl compound reductant, about 0.05 wt % to about 1.5 wt % low
molecular weight sulfide, about 0.1 wt % to about 10 wt % water
soluble amines, about 1 wt % to about 10 wt % thio compound, about
0.01 wt % to about 1 wt % thio stabilizer, and about 2 wt % to
about 5 wt % pH-conditioning agent with respect to 100 wt % of the
polyamide fiber to be coated.
[0042] The conductive polymer in which metal sulfide nanoparticles
including copper sulfide or copper sulfide nanoparticles are
coordinate-bonded may be a conductive yarn that gives
electroconductivity to fiber while maintaining the characteristics
of the synthetic fiber. The conductive polymer may absorb near
infrared ray in a near infrared ray spectrum of about 720 nm to
about 1,500 nm.
[0043] Also, a fabric using the conductive polymer may be easy to
control conductivity according to the type and content of
conductive metal elements and control conductivity according to the
thickness of the base material fiber while maintaining intrinsic
characteristics of the synthetic fiber. Accordingly, the fabric
enables the use of various existing looms in terms of weaving of
the fabric, and thus may be very useful for manufacturing of the
filaceous camouflage fabric.
[0044] Also, the camouflage fabric according to the embodiment of
the present invention needs to be designed to have near infrared
ray reflectance similar or equal to any surrounding background or
area.
[0045] In order to achieve an optimal result in the near infrared
ray application, a target must not have too high or too low near
infrared ray reflectance compared to the near infrared ray
reflectance of surrounding environments.
[0046] This is because under too high near infrared ray reflectance
compared to that of surrounding environments, when observed by a
night vision device, a bright image is generated. On the contrary,
under too low near infrared ray reflectance compared to that of
surrounding environments, when observed by a night vision device, a
dark image may be generated.
[0047] Accordingly, an optimal level of the near infrared ray
reflectance needs to vary according to the surroundings.
[0048] The geomorphic elements may have different reflection
signals based on the chemical constitution thereof.
[0049] Typically, fabrics useful for the military clothes and
equipment may be formed of polyester, polyamide, or blended yarns
of synthetic fiber thereof and cotton.
[0050] Also, synthetic polymer polyamide (nylon) and polyester
fiber is known as a material having a high near infrared ray
reflectance of about 85% to about 90% in the visible ray and near
infrared ray regions of about 600 nm to about 2,000 nm.
[0051] Consequently, the near infrared ray reflectance of polyester
and polyamide clothes and equipment in a battlefield needs to be
reduced closely to the near infrared ray reflectance of the
surroundings.
[0052] For example, the near infrared ray reflectance of temperate
leaves are measured to be typically about 35%, and the near
infrared ray reflectance of eremophilous leaves may rise to about
70%.
[0053] Since clothes and equipment manufactured from the camouflage
fabric in accordance with the topography destroys the silhouette of
a wearer when viewed from the near infrared ray spectrum range, the
clothes and equipment may effectively camouflage the wearer from a
near infrared observation equipment that uses a night vision
device.
[0054] Accordingly, in a modern war, it is very important to
manufacture a military camouflage fabric that is designed to have a
near infrared ray reflectance similar or equal to those of
surrounding objects having different natural near infrared ray
reflectances in the near infrared ray spectrum region of about 720
nm to about 1,500 nm in addition to the color camouflage of the
wavelength band of the visible ray spectrum.
[0055] The military camouflage fabric with near infrared ray
reflectance adjusting characteristics may include at least a first
multifilament yarn and a second multifilament yarn to more
accurately adjust the near infrared ray reflectance
characteristics, which will be described in detail below.
[0056] The first multifilament yarn may have a total of about 250
denier to about 350 denier in which conductive polymer
multifilament yarn of about 30 denier to about 150 denier
containing metal sulfide nanoparticles including copper sulfide or
copper sulfide nanoparticles and a blended yarn of about 150 denier
to about 300 denier such as polyester and cotton, polyester and
rayon, or nylon multifilament without a component that can control
the near infrared ray reflectance characteristics are blended at
about 300 T/M to about 400 T/M by a twisting machine. The second
multifilament yarn may have a total of about 250 to about 350
denier in which polyamide (nylon) cotton, rayon, and polyester
substantially without a component that can control the near
infrared ray reflectance characteristics are blended at about 300
T/M to about 400 T/M by a twisting machine. The military camouflage
fabric with near infrared ray reflectance adjusting characteristics
may be manufactured by weaving the first multifilament yarn and the
second multifilament yarn into plain weaves or fancy plain weave as
a warp and a weft at various blending ratios by a loom, and then
printing a pattern and a hue of a visible ray region have a color,
a chroma, and a brightness which are difficult to distinguish from
surrounding objects on the surface of the manufactured fabrics in
order to show a similar level of camouflage effect at day and night
times.
[0057] In this case, a vat dye and a disperse dye may be used for
blending of polyester and cotton, and a reactive vinyl sulfone or
vat dye may be used for blending of polyamide and cotton in order
to print the camouflage fabrics. The camouflage fabrics according
to the embodiment of the present invention may be used to
manufacture clothes, gears, tents, and military equipment which
have camouflage exteriors in terms of near infrared ray reflectance
monitored by night vision devices.
[0058] Accordingly, clothes manufactured from the camouflage
fabrics may provide a camouflage effect of near infrared ray that
substantially conceals a wearer from the detection by night vision
devices such as night vision goggles and image amplification
converters.
[0059] Tables 1 to 8 below regulate the near infrared ray
reflectance of military camouflage fabrics of each country by
color.
TABLE-US-00001 TABLE 1 Republic of Korea New Type Combat Uniform
Fabric KDS 8305-1044 Dark Wavelength Olive Forest Beige (nm) Color
Charcoal Chocolate Green Green Gray 600 3-18 4-18 4-18 6-18 18-32
620 3-18 4-18 4-18 6-18 18-32 640 3-18 4-18 4-18 6-20 18-32 660
3-22 6-18 4-18 8-22 20-40 680 4-28 12-24 6-22 12-30 28-48 700 12-28
12-24 8-22 14-32 38-58 720 18-36 16-36 10-28 22-46 38-58 740 18-36
16-36 16-28 28-52 46-72 760 24-40 24-44 18-34 28-56 46-72 780 24-40
24-44 22-40 34-64 46-72 800 28-46 30-52 22-46 34-64 52-76 820 28-46
30-52 24-52 34-64 52-76 840 32-48 34-58 24-54 40-70 52-76 860 32-48
34-58 24-58 40-70 52-76 880 36-56 38-64 34-64 40-70 52-76 900 36-56
38-64 34-64 46-72 52-76 920 40-66 44-66 38-72 46-72 52-76 940 40-66
44-66 40-74 50-80 52-76 960 40-66 44-66 40-74 50-80 52-76 980 44-68
44-68 46-76 50-80 52-76 1000 44-68 44-68 46-76 50-80 52-76 1020
46-70 44-68 50-80 50-80 52-76 1040 46-70 44-68 50-80 50-80
52-76
TABLE-US-00002 TABLE 2 German Army Equipment NYL1000D 36*30 1/1 LR
Range L/GREEN M/GREEN BROWN D/GREEN BLACK 650 14~35 10~25 10~17
6~14 3~8 700 14~35 10~26 10~17 6~14 3~8 750 14~35 10~27 10~17 6~14
3~8 800 14~35 10~28 10~17 6~14 3~8 850 20~60 20~45 14~22 16~32 5~12
900 20~60 20~45 14~22 16~32 5~12 950 20~60 20~45 14~22 16~32 5~12
1000 35~65 25~50 16~26 20~38 7~16 1050 35~65 25~50 16~26 20~38 7~16
1100 35~65 25~50 16~26 20~38 7~16 1150 35~65 25~50 16~26 20~38 7~16
1200 35~65 25~50 16~26 20~38 7~16 1250 35~60 30~45 20~32 26~40
9~20
TABLE-US-00003 TABLE 3 British Army Equipment NYL1000D 33*28 1/1 LR
Range BEIGE GREEN BROWN BLACK 800 50~70 35~55 equal to or equal to
or 850 less than 20 less than 20 900 950 1000 1050 1100 1150
1200
TABLE-US-00004 TABLE 4 British Army for Desert NYL1000D 33*28 1/1
LR Range BEIGE GREEN 800 60~70 40~50 850 900 950 1000 1050 1100
1150 1200
TABLE-US-00005 TABLE 5 NATO Camouflage Paper NYL1000D 36*30 1/1 LR
Range SAND GREEN BROWN BLACK 700 32~40 15~25 11~21 1~10 750 40~50
30~40 13~23 2~12 800 41~51 32~42 14~24 3~13 850 42~52 33~43 15~25
4~14 900 43~53 34~44 15~25 4~14 950 43~53 34~44 15~25 4~14 1000
47~57 36~46 15~25 4~14 1050 47~57 36~46 15~25 4~14 1100 50~60 39~49
15~25 4~14
TABLE-US-00006 TABLE 6 French Army Equipment NYL1100D 36*30 1/1 LR
Range BEIGE D/GREEN BROWN BLACK 750 50~70 30~50 25~40 equal to 850
or less 900 than 15 950 1000 1050 1100 1150 1200
TABLE-US-00007 TABLE 7 Belgian Army Equipment NYL1100D 36*30 1/1 LR
Range BEIGE GREEN BROWN BLACK 800 40~60 20~40 15~35 equal to 850 or
less 900 than 20 950 1000 1050 1100 1150 1200
TABLE-US-00008 TABLE 8 Irish Army NYL1000D 33*28 1/1 LR Range BEIGE
GREEN BROWN BLACK 800 50~60 30~40 15~25 equal to 850 or less 900
than 20 950 1000 1050 1100 1150 1200
[0060] Hereinafter, embodiments of the present invention will be
described in more detail.
[0061] First, a method of manufacturing a nylon conductive yarn
containing metal sulfide nanoparticles including copper sulfide
will be described.
MANUFACTURING EXAMPLE 1 AND MANUFACTURING EXAMPLE 2
[0062] An aqueous silane coupling agent of about 1,000 mg/L which
is an equimolar reaction product with imidazole and
3-mercaptopropyltrimethoxysilane was prepared as a preprocessing
agent.
[0063] About 30 denier nylon filament yarn of about 50 Kg was
dipped in water bath of about 200 Kg containing the preprocessing
agent solution at a temperature of about 55.degree. C. for about 60
minutes, and then non-reaction products was washed out with sodium
hydroxide solution of about 1 wt %. Thereafter, the nylon filament
yarn was dried at an atmospheric temperature of about 80.degree. C.
for about one hour.
[0064] Thereafter, the nylon filament yarn was cooled to a room
temperature, and then was dyed with metal sulfide nanoparticles
composition including copper sulfide or copper sulfide
nanoparticles including compositions of Table 9 as postprocessing
agent at a temperature of about 55.degree. C. for about 120 minutes
to form a nylon conductive yarn containing nanoparticles including
copper sulfide or copper sulfide nanoparticles.
TABLE-US-00009 TABLE 9 Contents below are indicated as wt % with
respect to the weight of nylon filament Manufacturing Manufacturing
Example 1 Example 2 Metallic Salts cupric 12 20 sulphate
pentahydrate Metallic Salts nickelic 5 x sulphate hexahydrate
Metallic Salts zinc 3 x sulphate heptahydrate phenyl-based
hydroquinone 1 2 reductant sulfide of low mercaptoacetic 0.3 0.3
molecular weight acid water-soluble ethylene 1 2.5 amines diamine
thio compound sodium 3.2 3.2 hyposulfide pentahydrate thio
hydroxylamine 0.5 0.5 stabilizer sulfate pH adjuster disodium 2.5
2.5 phosphate pH adjuster citric acid 2.5 2.5
[0065] The properties of the conductive nylon fiber manufactured
according to <Embodiment 1> and <Embodiment 2 22 was
measured as follows. The measurement results are shown in Table 10
below.
TABLE-US-00010 TABLE 10 resistivity friction vs antibacterial
Tensile Tensile content of (.OMEGA. cm) voltage after degree after
Strength Degree heavy metal resistivity after 60 times 60 times 60
times (cN) (%) (Cu/(/Ni/Zn)) (.OMEGA. cm) washing washing washing
Manufacturing 312 18.2 2.84 0.2 0.3 less than 99.9% Example 1 10 V
Manufacturing 302 16.5 2.96 0.2 100 less than 99.9% Example 2 10
V
[0066] <Manufacturing Example 3> and <Manufacturing
Example 4> below relate to a method of manufacturing the first
multifilament yarn and the second multifilament yarn that can
control the near infrared ray reflectance using an
electroconductive nylon filament yarn in which metal sulfide
nanoparticles including copper sulfide nanoparticles are
coordinate-bonded according to <Embodiment 1>.
MANUFACTURING EXAMPLE 3
[0067] The polyamide (nylon) conductive yarn manufactured in
<Embodiment 1> in which metal sulfide nanoparticles including
copper sulfide with a total of metal content of about 2.84 wt %
having about 30 denier, i.e., resistivity of about 2.times.10-2
.OMEGA.cm are coordinate-bonded and a TC blending yarn of about 60%
polyester and about 265.5 denier and a TC blended yarn of about
265.6 denier, i.e., 40 Nc/2 blending of 60% polyester and 40%
scoured cotton yarn were twisted at 360 T/M to manufacture the
first multi filament yarn of about 295.6 denier that can adjust the
near infrared ray reflectance characteristics.
MANUFACTURING EXAMPLE 4
[0068] A 40 Nc 1 blended yarn of polyester (60%) and scoured cotton
yarn (40%) and a high flexible polyester filament yarn of about 150
denier were twisted at 360 T/M to manufacture the second
multifilament yarn of about 282.8 denier without a component that
can adjust the near infrared ray reflectance characteristics.
[0069] Hereinafter, various embodiments in which the first
multifilament yarn of <Manufacturing Example 3> and the
second multifilament yarn <Manufacturing Example 4> are
designed into plain weaves or fancy plain weaves as a warp and a
weft by a loom to variously control the near infrared ray
reflectance will be described.
EMBODIMENT 1
[0070] As a warp of the camouflage, two strands of the first
filament yarns of 295.6 denier twisted in <Manufacturing Example
3> and one strand of the second filament yarn of 282.8 denier
twisted in <Manufacturing Example 4> were alternately woven
into a fancy plain weave at a ratio of 2:1 and a warp density of
about 170 strands/5 cm, and as a weft, one strand of the first
filament yarn of 295.6 denier twisted in <Manufacturing Example
3> and two strands of the second filament yarns of 282.8 denier
twisted in <Manufacturing Example 4> were alternately woven
into a fancy plain weave at a ratio of 1:2 and a weft density of
about 160 strands/5 cm to weave a camouflage fabric with a weight
of about 225 g/m.sup.2.
[0071] <Embodiment 2> to <Embodiment 10> of a fabric
weaving design of a camouflage fabric are shown in Table 11
below.
TABLE-US-00011 TABLE 11 warp weft warp density weft density Embodi-
first 170 strands/ first 160 strands/ ment 2 multifilament: 5 cm
multifilament: 5 cm 100% 100% Embodi- first 170 strands/ first 160
strands/ ment 3 multifilament: 5 cm multifilament: 5 cm three
strands one strand second second multifilament: multifilament: one
strand one strand Embodi- first 170 strands/ second 160 strands/
ment 4 multifilament: 5 cm multifilament: 5 cm three strands 100%
second multifilament: one strand Embodi- first 170 strands/ first
160 strands/ ment 5 multifilament: 5 cm multifilament: 5 cm two
strands one strand second second multifilament: multifilament: one
strand one strand Embodi- first 170 strands/ first 160 strands/
ment 6 multifilament: 5 cm multifilament: 5 cm one strand one
strand second second multifilament: multifilament: one strand one
strand Embodi- first 170 strands/ second 160 strands/ ment 7
multifilament: 5 cm multifilament: 5 cm one strand 100% second
multifilament: one strand Embodi- first 170 strands/ first 160
strands/ ment 8 multifilament: 5 cm multifilament: 5 cm one strand
one strand second second multifilament: multifilament: two strands
one strand Embodi- first 170 strands/ second 160 strands/ ment 9
multifilament: 5 cm multifilament: 5 cm one strand 100% second
multifilament: two strands <Embodi- first 170 strands/ second
160 strands/ ment 10> multifilament: 5 cm multifilament: 5 cm
one strand 100% second multifilament: three strands
[0072] FIG. 1 is a graph illustrating results of Near Infrared Ray
Reflectance (NIRR) of camouflage fabrics manufactured according to
first to tenth embodiments of the present invention.
EMBODIMENT 11
[0073] In order to achieve a desired camouflage in both visible ray
and near infrared ray, the fabric woven in <Embodiment 1> was
continuously refined using a non-ionic active agent, and then was
directly printed at four degrees into khaki, green, brown, and
black using a typical vat dye by an automatic printing machine. The
saturated steaming was performed on the printed fabric at a
temperature of about 120.degree. C. for about 3 minutes, and then
continuous rinse and final set were performed. The measurement
results of this camouflage fabric are shown in graph of FIG. 2.
EMBODIMENT 12
[0074] The fabric woven in <Embodiment 1> was continuously
refined using a non-ionic active agent, and then was directly
printed at five degrees into charcoal, dark olive, green, land
color, dark wood, and forest green using a typical vat dye by the
automatic printing machine.
[0075] The saturated steaming was performed on the printed fabric
at a temperature of about 120.degree. C. for about 3 minutes, and
then continuous rinse and final set were performed. The measurement
results of this camouflage fabric are shown in graph of FIG. 3.
[0076] As shown in an actually-measured near infrared ray
reflectance curve of graph of FIG. 3, the near infrared ray
camouflage fabric according to <Embodiment 12> complies with
requirements regulated in Republic of Korea Military Standards KDS
8305-1044.
[0077] FIGS. 4 to 6 are photographs illustrating a comparison
between a typical combat uniform that is being currently used and a
combat uniform manufactured with a camouflage fabric according to
an embodiment of the present invention.
INDUSTRIAL APPLICABILITY
[0078] The present invention can be used for military clothes,
equipment, tents, and instruments.
* * * * *