U.S. patent application number 14/358034 was filed with the patent office on 2014-10-23 for method for manufacturing dyed woven or knitted fabric using metallic yarn and polyester yarn and fabric manufactured using the method.
This patent application is currently assigned to JUNGLIMTEXTILE. The applicant listed for this patent is Sung Hyun Cho, Sun Jin Kim, Jung Ha Woo. Invention is credited to Sung Hyun Cho, Sun Jin Kim, Jung Ha Woo.
Application Number | 20140310889 14/358034 |
Document ID | / |
Family ID | 45501724 |
Filed Date | 2014-10-23 |
United States Patent
Application |
20140310889 |
Kind Code |
A1 |
Woo; Jung Ha ; et
al. |
October 23, 2014 |
METHOD FOR MANUFACTURING DYED WOVEN OR KNITTED FABRIC USING
METALLIC YARN AND POLYESTER YARN AND FABRIC MANUFACTURED USING THE
METHOD
Abstract
A method for manufacturing dyed woven or knitted fabric includes
preparing woven or knitted fabric using metallic yarn and
normal-pressure dyeing polyester yarn having an elasticity modulus
of 400 to 600 kg/mm.sup.2 and an elongation of 30 to 40%,
fabricating a dye bath by putting a dye solution obtained by
dispersing a dye in water, dyeing the woven or knitted fabric by
putting the prepared woven or knitted fabric into the fabricated
dye bath, raising a temperature of the dye bath starting from 35 to
45.degree. C. for 30 to 50 minutes at a rate of 1.2 to 1.5.degree.
C./min, and maintaining the heated dye bath at 90 to 100.degree. C.
for 15 to 25 minutes, and washing the dyed woven or knitted fabric.
The dyed woven or knitted fabric has a light reflection reduction
rate of 20% to 30%.
Inventors: |
Woo; Jung Ha; (Gyeonggi-do,
KR) ; Kim; Sun Jin; (Gyeongsangbuk-do, KR) ;
Cho; Sung Hyun; (Seoul, KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Woo; Jung Ha
Kim; Sun Jin
Cho; Sung Hyun |
Gyeonggi-do
Gyeongsangbuk-do
Seoul |
|
KR
KR
KR |
|
|
Assignee: |
JUNGLIMTEXTILE
Gyeonggi-do
KR
|
Family ID: |
45501724 |
Appl. No.: |
14/358034 |
Filed: |
May 30, 2012 |
PCT Filed: |
May 30, 2012 |
PCT NO: |
PCT/KR2012/004270 |
371 Date: |
May 13, 2014 |
Current U.S.
Class: |
8/527 |
Current CPC
Class: |
D06P 3/52 20130101; D06P
3/34 20130101; D06P 3/82 20130101; D06P 1/0008 20130101; D06P 1/008
20130101; D06P 3/80 20130101 |
Class at
Publication: |
8/527 |
International
Class: |
D06P 1/00 20060101
D06P001/00 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 14, 2011 |
KR |
10-2011-0118196 |
Claims
1. A method for manufacturing dyed woven or knitted fabric,
comprising: preparing woven or knitted fabric using metallic yarn
and normal-pressure dyeing polyester yarn having an elasticity
modulus of 400 to 600 kg/mm.sup.2 and an elongation of 30 to 40%;
fabricating a dye bath by putting a dye solution obtained by
dispersing a dye in water; dyeing the woven or knitted fabric by
putting the prepared woven or knitted fabric into the fabricated
dye bath, raising a temperature of the dye bath starting from 35 to
45.degree. C. for 30 to 50 minutes at rate of 1.2 to 1.5.degree.
C./min, and maintaining the heated dye bath at 90 to 100.degree. C.
for 15 to 25 minutes; and washing the dyed woven or knitted
fabric.
2. The method for manufacturing dyed woven or knitted fabric
according to claim 1, before dyeing the woven or knitted fabric,
further comprising: Processing the prepared woven or knitted fabric
at 75 to 85.degree. C. for 15 to 25 minutes by using a de-oiling
agent before the prepared woven or knitted fabric is put into the
dye bath.
3. The method for manufacturing dyed woven or knitted fabric
according to claim 1, wherein the dye solution includes at least
one of glacial acetic acid, a dispersing agent, a softening agent,
a stain repellant, and their mixtures.
4. Dyed woven or knitted fabric, which is manufacture by the method
defined in claim 1 and has a light reflection reduction rate of 20%
to 30%.
5. Dyed woven or knitted fabric, which is manufacture by the method
defined in claim 2 and has a light reflection reduction rate of 20%
to 30%.
6. Dyed woven or knitted fabric, which is manufacture by the method
defined in claim 3 and has a light reflection reduction rate of 20%
to 30%.
Description
FIELD OF THE DISCLOSURE
[0001] The present disclosure relates to a method for manufacturing
dyed woven or knitted fabric using metallic yarn and polyester
yarn, and woven or knitted fabric manufactured using the dyeing
method.
DESCRIPTION OF THE RELATED ART
[0002] The present disclosure relates to a method for manufacturing
dyed woven or knitted fabric using a material obtained by
interlacing, twisting or covering metallic yarn and polyester yarn,
and more particularly, to a method for manufacturing dyed woven or
knitted fabric using metallic yarn and polyester yarn, which may
maintain metallic glass without damaging the metallic yarn or
contaminating a dye with the metallic yarn even though woven or
knitted fabric prepared using a material obtained by interlacing,
twisting or covering metallic yarn and normal-pressure dyeing
polyester yarn is dyed by means of a normal-pressure dyeing process
in a fabric-dyeing manner by using a disperse dye.
[0003] In order to form metallic yarn, metallic film members are
configured to include a resin coating layer formed on one surface
of a transparent base film of polyester yarn and a metallic layer
formed thereon by depositing metal such as gold, silver or copper,
and then the metallic film members are adhered to each other by
using an adhesive so that an adhesive layer is formed at a portion
where the metallic layers face and contact each other and the
transparent base film exposes outwards. The metallic yarn has
excellent gloss characteristic and electrostatic shielding
characteristic since it is made by interlacing, twisting, covering
fibers such as cotton, wool, silk, nylon, acryl, polyester or the
like and then weaving or knitting the fibers, and thus is widely
used for various functional materials such as party wears,
electrostatic shielding wears, shape memory clothes or the
like.
[0004] The existing technique uses a yam-dyeing manner in which
polyester yam is dyed first, then interlaced, twisted or covered,
and then made into woven or knitted fabric. However the yarn-dyeing
manner requires many processes, which deteriorates efficiency and
productivity and loses market competitive power due to high
production costs. Meanwhile, a fabric-dyeing manner, in which
metallic yam and polyester yam are woven to make woven or knitted
fabric and then a dyeing process is performed, has the following
problems. Different from other materials interlaced, twisted or
covered together with metallic yarn, polyester is generally dyed
for 60 to 80 minutes under high-temperature and high-pressure
conditions with a final temperature of 120 to 130.degree. C. by
using a disperse dye due to the nature of the fiber. The dyeing
process performed under such conditions may cause separation of the
metallic layer on the woven or knitted fabric, and contamination or
deformation of the dye by the metallic layer, after the dyeing
process, which deteriorates the quality of the woven or knitted
fabric and results in losing most gloss, which is an inherent
property of metal.
[0005] In order to solve this problem, there has been proposed a
method for preventing separation or discoloration of metallic yarn
by using heat-resistant polyurethane material as an adhesive to
improve the metallic yarn manufacturing process (Korean Patent
Registration No. 10-955517), but this cannot be a fundamental
solution against the problem in which polyester dye components are
contaminated by metallic yarn. Meanwhile, there has also been
proposed a method for preventing dye adsorption when a
fabric-dyeing process is performed with a disperse dye by
additionally forming a resin coating layer using an epoxy resin or
a melamine resin on the surface of a metallic layer (Korean Patent
Registration No. 10-656184), which however cannot solve the
problems in relation to costs and deformation, caused by the
additional process.
SUMMARY OF THE DISCLOSURE
[0006] The present disclosure is directed to providing a method for
maintaining clarity without deteriorating quality due to separation
or deformation of metallic yarn or contamination of the metallic
yarn even though woven or knitted fabric is prepared using a
material obtained by interlacing, twisting or covering metallic
yarn and polyester yarn and then dyed with a disperse dye by a
fabric-dyeing process, and woven or knitted fabric manufactured by
the method.
[0007] In one aspect of the present disclosure, there is provided a
method for manufacturing dyed woven or knitted fabric, which
includes preparing woven or knitted fabric using metallic yarn and
normal-pressure dyeing polyester yarn having an elasticity modulus
of 400 to 600 kg/mm.sup.2 and an elongation of 30 to 40%;
fabricating a dye bath by putting a dye solution obtained by
dispersing a dye in water; dyeing the woven or knitted fabric by
putting the prepared woven or knitted fabric into the fabricated
dye bath, raising a temperature of the dye bath starting from 35 to
45.degree. C. for 30 to 50 minutes at a rate of 1.2 to 1.5.degree.
C./min, and maintaining the heated dye bath at 90 to 100.degree. C.
for 15 to 25 minutes; and washing the dyed woven or knitted
fabric.
[0008] In addition, the method for manufacturing dyed woven or
knitted fabric according to the present disclosure may further
include, before dyeing the woven or knitted fabric, preprocessing
the prepared woven or knitted fabric at 75 to 85.degree. C. for 15
to 25 minutes by using a de-oiling agent before the prepared woven
or knitted fabric is put into the dye bath.
[0009] The dye solution may include at least one of glacial acetic
acid, a dispersing agent, a softening agent, a stain repellant, and
their mixtures.
[0010] In another aspect of the present disclosure, there is also
provided dyed woven or knitted fabric having a light reflection
reduction rate of 20% to 30%.
[0011] According to the present disclosure, the woven or knitted
fabric prepared using a thread obtained by interlacing, twisting or
covering normal-pressure dyeing polyester yarn and metallic yarn
may maintain inherent clear gloss and quality of the metallic yarn
since the metallic yarn is not separated or deformed and also not
contaminated by a dye even though a dyeing process is performed at
a final temperature of 90 to 100.degree. C. for 15 to 20 minutes
with a disperse dye.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] FIG. 1 is a photograph showing a knitted work dyed using a
general polyester material.
[0013] FIG. 2 is a photograph showing a knitted work dyed according
to an embodiment of the present disclosure.
DESCRIPTION OF THE PREFERRED EMBODIMENT
[0014] Hereinafter, preferred embodiments of the present disclosure
will be described in detail with reference to the accompanying
drawings. Prior to the description, it should be understood that
the terms used in the specification and the appended claims should
not be construed as limited to general and dictionary meanings, but
interpreted based on the meanings and concepts corresponding to
technical aspects of the present disclosure on the basis of the
principle that the inventor is allowed to define terms
appropriately for the best explanation.
[0015] A method for manufacturing dyed woven or knitted fabric
according to the present disclosure includes preparing woven or
knitted fabric using metallic yarn and normal-pressure dyeing
polyester yarn having an elasticity modulus of 400 to 600
kg/mm.sup.2 and an elongation of 30 to 40%; fabricating a dye bath
by putting a dye solution obtained by dispersing a dye in water;
dyeing the woven or knitted fabric by putting the prepared woven or
knitted fabric into the fabricated dye bath, raising a temperature
of the dye bath starting from 35 to 45.degree. C. for 30 to 50
minutes at a rate of 1.2 to 1.5.degree. C./min, and maintaining the
heated dye bath at 90 to 100.degree. C. for 15 to 25 minutes; and
washing the dyed woven or knitted fabric.
[0016] First, woven or knitted fabric is prepared using metallic
yarn and normal-pressure dyeing polyester yarn having an elasticity
modulus of 400 to 600 kg/mm.sup.2 and an elongation of 30 to
40%.
[0017] The metallic yarn employed in the present disclosure is
prepared through a slitting process by coating a polymer film with
a metal to have a size of 0.15 to 5 mm or prepared by coating
general yarn with a metal. The metal may use gold, silver, nickel,
germanium or the like, and any metallic material having
functionality such as peculiar color or electric conductivity may
be used without special limitation. The polymer film coated with a
metal may use polymer material such as nylon, polyester,
polyurethane, polyethylene or the like, and the general yarn may
use natural fiber such as cotton, wool, linen, silk or the like,
synthetic fiber such as nylon, polyester, acryl, polyurethane or
the like, or semi-synthetic fiber such as acetate, lyocell or the
like, without being limited thereto. The general yarn may be coated
with a metal by using any method known in the art, for example ion
plating, electroless plating, sputtering, coating, spraying or the
like.
[0018] The normal-pressure dyeing polyester yarn having an
elasticity modulus of 400 to 600 kg/mm.sup.2 and an elongation of
30 to 40%, employed in the present disclosure, may be obtained by
changing orientation and crystal structure of molecular chains by
ultrahigh speed spinning or introducing copolymer material such as
hydrocarbon derivative to main chains by means of copolymerization,
or may use polyester fiber prepared by spinning polyethylene
terephthalate and polytrimethylene terephthalate in mixture.
[0019] If the normal-pressure dyeing polyester yarn of the present
disclosure has an elasticity modulus less than 400 kg/mm.sup.2,
fabric made of the yarn has deteriorated elasticity due to bad
mechanical properties. If the elasticity modulus exceeds 600
kg/mm.sup.2, the dyeing quality is not good. In addition, the
normal-pressure dyeing polyester yarn of the present disclosure may
have an elongation of 30 to 40%.
[0020] In order to prepare the woven or knitted fabric by using
metallic yarn and polyester yarn, any method may be used without
special limitation. For example, after forming a piece of thread by
means of interlacing, covering or twisting, the woven or knitted
fabric may be prepared by weaving the thread, as well known in the
art. Here the woven fabric is prepared according to an existing
weaving method by means of plain weaving, twilling or satin weaving
depending on its usage, by using the fabricated thread as a part of
warp or weft. The knitted fabric may be prepared by knitting the
fabricated thread by means of sweater knitting, circular knitting
or tricot stitching depending on its usage, to have various fabrics
such as double-sided fabric, single-sided fabric, fraise fabric,
towel fabric, terry fabric, jacquard or the like. Both the woven
fabric and the knitted fabric may be used.
[0021] In detail, in the twisting process, metallic yarn and
normal-pressure dyeing polyester yarn are twisted by a twisting
machine in a "S" or "Z" according to the use of the fabric in a MX
manner within the range of 350 to 700 TPM. The dimension of
available polyester yarn is within a range of 75D to 150D, the
metallic yarn has a range of 0.15 to 5.0 mm, and a ratio of the
normal-pressure dyeing polyester yarn to the metallic yarn may be
1:1 or 1:2 in the twisting process.
[0022] In addition, it is also possible to use the metallic yarn as
a core yarn and the normal-pressure dyeing polyester yarn and other
yarn as auxiliary yarns so that the core yarn and the auxiliary
yarn are twisted together by a twisting machine for interlacing or
making a covered yarn.
[0023] After that, a dye solution obtained by dispersing a dye in
water is put to fabricate a dye bath.
[0024] For dyeing, a fabric-dyeing process may be directly
performed to the prepared woven or knitted fabric instead of a
yarn-dyeing process, which may shorten the process time and ensure
excellent fabric quality.
[0025] In the present disclosure, among many kinds of dyes for
polyester, it has been found through tests that C.I. Disperse
Yellow 54, C.I. Disperse Red 60, C.I. Disperse Blue 56, Disperse
Black D-RE or the like may be used alone or mixed suitably
according to a demanded color.
[0026] The dye solution may include a small amount of glacial
acetic acid, a dispersing agent (a dispersing agent based on
polyoxyethylene oxide alkylalcohol), a softening agent (an emulsion
obtained by performing emulsification dispersion to ester-based
elastic polymer), and a stain repellant (polyoxyethylene nonyl
phenylether).
[0027] In addition, the method of the present disclosure may
selectively further include a preprocessing process for treating
the prepared woven or knitted fabric at 75 to 85.degree. C. for 15
to 25 minutes by using a de-oiling agent (fatty alcohol polyglycol
ester and ether) before the prepared woven or knitted fabric is put
into the dye bath.
[0028] After that, the prepared woven or knitted fabric is put into
the fabricated dye bath, the temperature of the dye bath is raised
starting from 35 to 45.degree. C. for 30 to 50 minutes at a rate of
1.2 to 1.5.degree. C./min, and the heated dye bath is maintained at
90 to 100.degree. C. for 15 to 25 minutes, thereby dyeing the woven
or knitted fabric.
[0029] The amount of the used dye is 3 to 5% (o.w.f 3 to 5%) in
comparison to the weight of fiber, and the amount of the dye bath
is set to be 20 times of the weight of fiber (a bath ratio is
20:1). After the prepared woven or knitted fabric is put into the
dye bath, the temperature is raised starting from 35 to 45.degree.
C. for 30 to 50 minutes at a rate of 1.2 to 1.5.degree. C./min, and
a final temperature is maintained at 90 to 100.degree. C. for 15 to
20 minutes according to the dyeing color.
[0030] A final temperature of a general dyeing process is
120.degree. C. or above since a general polyester yarn is not dyed
commercially usefully at a temperature lower than 120.degree. C.
However, the dyeing process of the present disclosure is performed
at a final temperature of 90 to 100.degree. C. Since the present
disclosure uses the normal-pressure dyeing polyester yarn having an
elasticity modulus of 400 to 600 kg/mm.sup.2 and an elongation of
30 to 40%, commercially useful dyeing may be performed at the final
temperature of 90 to 100.degree. C. In addition, the metallic yarn
may be deformed when being heated to 120.degree. C. or above.
However, since the dyeing process may be performed at a low final
temperature in the present disclosure, the dye is not contaminated
by the metallic yarn, which ensures excellent color development of
the polyester portion and allows the metallic yarn to maintain
inherent gloss. Therefore, the characteristics of the original
material may be exhibited without damage.
[0031] In addition, the present disclosure provides dyed woven or
knitted fabric, which is manufactured by the above method and has a
light reflection reduction rate of 20% to 30%.
Photo - reflection reduction rate ( % ) = ( reflectivity of the
metallic yarn before dyeing - reflectivity of the metallic yarn
after dyeing ) reflectivity of the metallic yarn before dyeing
.times. 100 Equation 1 ##EQU00001##
[0032] The light reflection reduction rate of the present
disclosure may be calculated by measuring reflectivity of the
metallic yarn before and after dyeing as shown in Equation 1 above,
and the gloss maintenance of the metallic yarn may be quantified
through the light reflection reduction rate. The metallic yarn of
the dyed woven or knitted fabric according to the present
disclosure has a light reflection reduction rate of 20 to 30%,
which is very excellent. This is because the dyeing process may be
performed at a low final temperature, and thus the dye is not
contaminated by the metallic yarn, which ensures excellent color
development of the polyester portion, allows the metallic yarn to
maintain inherent gloss, and thus exhibits the characteristics of
the original material without damage. The light reflection
reduction rate may be measured using a spectrophotometer.
[0033] Hereinafter, the present invention will be explained in
detail with reference to embodiments. The embodiments of the
present invention, however, may take several other forms, and the
scope of the invention should not be construed as being limited to
the following examples. The embodiments of the present invention
are provided to more fully explain the present invention to those
having ordinary knowledge in the art to which the present invention
belongs.
EXAMPLES
Example 1
Low-Temperature Dyeing Method Using Normal-Pressure Dyeing
Polyester Yarn Having an Elasticity Modulus of 400 kg/mm.sup.2 and
an Elongation of 38%
[0034] Normal-pressure dyeing polyester yarn (FDY 110D/36F CBR,
Ji-Young Trading) having an elasticity modulus of 400 kg/mm.sup.2
and an elongation of 38% and metallic yarn (1/100'', polyester
metallic yarn, MX Type, Seoheung Industry) were put together and
twisted at 400 TPM to make a thread. By using the thread, a knitted
work of single fabric was made by means of a circular knitting
machine.
[0035] C.I Disperse Yellow 54 (Lumacron Yellow E3G), C.I Disperse
Red 60 (Lumacron Red FB), C.I. Disperse Blue 56 (Lumarcron Blue
FBLE), Disperse Black D-RE (Lumacron Black) dye, 0.5 g/L of glacial
acetic acid, 0.5 g/L of dispersing agent (polyoxyethylene oxide
alkylalcohol) and 0.5 g/L of softening agent (an emulsion obtained
by performing emulsification dispersion to ester-based elastic
polymer), and 0.5 g/L of stain repellant (polyoxyethylene nonyl
phenylether) were added to water to make a dye bath.
[0036] For dyeing in yellow, C.I Disperse Yellow 54 and C.I
Disperse Red 60 were mixed and used. For dyeing in pink, C.I
Disperse Red 60 1.5 g/L and C.I Disperse Yellow 54 were mixed and
used. For dyeing in black, Disperse Black D-RE and C.I Disperse RED
60 were mixed and used. The amount of dye used is 3% (o.w.f) in
comparison to the weight of fiber, and the amount of the dye bath
was 20 times of the weight of fiber (a bath ratio 20:1). After the
prepared woven or knitted fabric is put into the dye bath, the
temperature is raised starting from 40.degree. C. for 40 minutes at
a rate of 1.5 .degree. C./min, and a final temperature is
maintained at 100.degree. C. for 20 minutes. The dyed fabric was
washed and then dried.
Example 2
Low-Temperature Dyeing Method using Normal-Pressure Dyeing
Polyester Yarn having an Elasticity Modulus of 600 kg/mm.sup.2 and
an Elongation of 33%
[0037] Dyed woven or knitted fabric was prepared in the same way as
Example 1, except that normal-pressure dyeing polyester yarn (FDY
110D/36F CBR, Ji-Young Trading) having an elasticity modulus of 600
kg/mm.sup.2 and an elongation of 33% was used.
Comparative Example 1
Low-Temperature Dyeing Method using General Polyester Yarn having
an Elasticity Modulus of 900 kg/mm.sup.2 and an Elongation of
28%
[0038] Dyed woven or knitted fabric was prepared in the same way as
Example 1, except that general polyester yarn (FDY 110D/36F TBR)
having an elasticity modulus of 900 kg/mm.sup.2 and an elongation
of 28% was used.
Comparative Example 2
High-Temperature Dyeing Method using General Polyester Yarn having
an Elasticity Modulus of 900 kg/mm.sup.2 and an Elongation of
28%
[0039] General polyester yarn (FDY 110D/36F TBR) having an
elasticity modulus of 1000 kg/mm.sup.2 and an elongation of 28% and
metallic yarn (1/100'', polyester metallic yarn, MX Type, Seoheung
Industry) were put together and twisted at 400 TPM to make a
thread. By using the thread, a knitted work of single fabric was
made by means of a circular knitting machine.
[0040] The composition of the dye, the amount of additives, and the
composition of the dye bath were identical to those of Example 1.
However, after the prepared woven or knitted fabric was put into
the dye bath, the temperature was raised starting from 40.degree.
C. for 40 minutes at a rate of 2.degree. C./min, and the final
temperature was maintained at 120.degree. C. for 40 minutes. The
dyed fabric was washed and then dried.
Comparative Example 3
High-Temperature Dyeing Method using Normal-Pressure Dyeing
Polyester Yarn having an Elasticity Modulus of 500 kg/mm.sup.2 and
an Elongation of 36%
[0041] This is substantially identical to Comparative Example 2,
except that normal-pressure dyeing polyester yarn (FDY 110D/36F
CBR, Ji-Young Trading) having an elasticity modulus of 500
kg/mm.sup.2 and an elongation of 36% was used.
Test 1
Measurement of Properties
[0042] Washing fastness, rubbing fastness and light reflection
reduction rate of the dyed knitted fabric according to the present
disclosure were evaluated as shown in Table 1 below.
[0043] The washing fastness and the rubbing fastness were evaluated
based on the gray scale, which are marked as Grades 1 to 5. Here,
Grade 1 represents a poorest grade (bad), and Grade 5 represents a
best grade (good).
[0044] For the appearance observation, after the knitted fabrics
according to each example and comparative example were dyed,
contamination of the metallic yarn by the dye and separation of the
film layer were evaluated.
[0045] The light reflection reduction rate was calculated by
measuring reflectivity before and after dyeing the metallic yarn
with a spectrophotometer CM-3600d (Konica Minolta).
TABLE-US-00001 TABLE 1 Light reflection Washing Rubbing reduction
Appearance fastness fastness rate (%) observation Example 1 4 4 25
Excellent metallic clarity Example 2 5 5 28 Excellent metallic
clarity Comparative 2 2 43 Metallic Example 1 layer contamination
Comparative 4 4 49 Metallic Example 2 layer separation Comparative
3 4 43 Metallic Example 3 layer separation
[0046] In comparison to the knitted fabric prepared using general
polyester material, the knitted fabric prepared using the
normal-pressure dyeing polyester having an elasticity modulus of
400 to 600 kg/mm.sup.2 and an elongation of 30 to 40% has excellent
washing fastness and excellent rubbing fastness, causes
substantially no dye adsorption to the metallic yarn during the
dyeing process, and maintains inherent gloss characteristics due to
the low light reflection reduction rate. When general polyester is
used, since the dyeing property of polyester is inferior at
low-temperature dyeing, the washing fastness and the rubbing
fastness were bad. At the high-temperature dyeing, the inherent
gloss characteristic of the metallic layer deteriorates due to
separation of the metallic film layer or contamination by the
dye.
Test 2
Surface Observation
[0047] The woven fabrics prepared according to Example 1 and
Comparative Example 1 were photographed as shown in FIGS. 1 and 2.
FIG. 2 shows the fabric according to Example 1, and it may be found
that the metallic yarn has more excellent photo-reflectivity in
comparison to the fabric of FIG. 1 according to Comparative Example
1.
* * * * *