Volume 03 Issue 02-2023
24
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
03
I
SSUE
02
Pages:
24-32
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
(2023:
6.741
)
OCLC
–
1368736135
A
BSTRACT
The mechanical properties, thickness and uniformity of the yarn, deformations of its components and the
ability of the yarn to withstand repeated forces, as well as different degrees of breakage of yarns in spinning
machines, depend on the twist of the yarn. The productivity of spinning machines also depends on the twist
of the thread, because at a constant speed of rotation of their components, their productivity is inversely
proportional to the twist of the thread. Therefore, it is important to choose the optimal twist of the thread
.
The scientific article presents the results of the study of the effect of the number of twists given to the
cotton/polyester 80/20% mixed yarn on the quality parameters of the yarn. P wax/polyester 80/20%
mixed yarn 14.7 tex ( Ne 40 /1 ) in 850, 918 and 988 twists on ring spinning machines prepared. The quality
indicators of the finished yarns were determined using USTER test equipment
Journal
Website:
http://sciencebring.co
m/index.php/ijasr
Copyright:
Original
content from this work
may be used under the
terms of the creative
commons
attributes
4.0 licence.
Research Article
EFFECT OF THREAD ON YARN QUALITY OF
COTTON/POLYESTER 80/20% BLEND YARN
Submission Date:
February 05, 2023,
Accepted Date:
February 10, 2023,
Published Date:
February 15, 2023
Crossref doi:
https://doi.org/10.37547/ijasr-03-02-04
Fayzullaev Sh.R.
Tashkent Institute of Textile and Light Industry, Uzbekistan
Rajapov O.O.
Tashkent Institute of Textile and Light Industry, Uzbekistan
Kojametov B.T.
Karakalpak State University, Uzbekistan
Kolondorov M.J.
Karakalpak State University, Uzbekistan
Volume 03 Issue 02-2023
25
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
03
I
SSUE
02
Pages:
24-32
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
(2023:
6.741
)
OCLC
–
1368736135
The unevenness and mechanical properties of mixed yarns and their coefficients of variation were
analyzed. As a result, it was determined that the coefficients of variation of the cotton/polyester 80 / 20%
mixed yarn between twist 850 and 918 in terms of unevenness indicators decrease, the tensile strength,
breaking strength and breaking work indicators of the yarns increase.
K
EYWORDS
Yarn quality, mixed yarn, unevenness, polyester fiber, coefficient of variation.
I
NTRODUCTION
According to the end of January-April 2022 of the
textile and sewing knitting industry, more than
438,000 tons of cotton fibers were used by the
companies in the industry. The volume of
production of industrial products amounted to 29
trillion sums (growth rate - 112 percent).
Including; cotton yarn - 354,000 tons (104
percent), yarn gauze - 315 million square meters
(103 percent), knitwear - 91,000 tons (130
percent), sewing and knitwear - 998 million
pieces (151 percent) [1].
The strength, unevenness, hairiness of the
blended yarn depends on the fiber properties, the
ratio in the blend, the spindle speed of the
spinning machine [2], the yarn count, the high
roller pressure and the twist coefficient of the
drafting pairs [3-4]. When spinning high quality
yarns, the influence of the diameter of the draw
rolls, the initial elongation and the twist
coefficient imparted to the web on the tensile
force in the draw zone has been studied [5-6]. The
decrease in the titer of the yarn is also caused by
the increase in the elongation properties of
blended yarns [7]. Filament breakage occurs due
to breakage or displacement of the fibers in the
filament. The breakage of the fiber in the thread is
determined by the core strength of the fiber and
the correct distribution of the fibers along the
length of the thread. On the other hand, the twist
applied to the yarn causes fiber shifts and breaks
[8]. The quality parameters of ring, rotor and
pneumo-mechanical blended yarns made of
cotton/viscose/polyester/elastane depend on
the parameters entered into the system and the
ratio of blend and twist factor [9-10].
Dr Madan Lal Regar, assistant Professor,
National Institute of Fashion Technology,
Jodhpur, India and Prof. (Dr.) S.K.Sinha pointed
out that the presence of long fibers in the thread
section increases the strength of the thread and
mentioned that the strength of the thread
decreases with increasing number of rotations up
to a certain limit to [11]. Given the number of
twists, the elasticity, unevenness, hairiness and
hardness of the blended yarns are good, and the
number of twists is more than necessary. If more
is given, the properties of the blended yarn
deteriorate [12-14]. As we increased the number
Volume 03 Issue 02-2023
26
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
03
I
SSUE
02
Pages:
24-32
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
(2023:
6.741
)
OCLC
–
1368736135
of twists of the yarn spun from 100% cotton
fibers, it was observed that the friction and slip
properties of the fabric woven from it decreased.
With an increasing number of windings, the dust
holding capacity also decreases and the water
permeability improves [15-17].
Test methods. The experimental work was
carried out in the scientific laboratory of the
"Spinning Department" of TITLI, and 14,7-tex
cotton/polyester 80/20% blend yarns were spun
by the ring spinning process with 850, 918 and
988 twists in three different samples
manufactured.
Quality parameters of mixed yarns Unevenness
indicators of mixed yarns in the conditions of the
quality laboratory near the company "BAKAN
TEX" Tests for 3000 m of yarns at a speed of 400
m/min on Uster® Tester 6 and mechanical
indicators of Uster® Tensojet 4 devices are made
3 times repeated, the results are averaged.
The purpose of the research work. The aim was to
develop new ranges of raw materials and increase
the quality level of the ranges in the manufacture
of outerwear products for weaving from a
mixture of cotton and polyester fibers. For this
purpose, the influence of the twists given when
spinning cotton/polyester 80/20% blend yarn on
the quality parameters of the finished yarn was
studied.
Cotton fibers of the "Sultan" selection variety and
polyester fibers were used to produce mixed yarn
samples. Cotton fiber samples were taken in
accordance with the UzDSt 614-2018 standard
and quality indicators were determined using the
USTER AFIS PRO 2 device.
The properties of the fibers used in the research
are given in Table 1 and a summary of the
spinning schedule is given in Table 2.
Table 1
Properties of fibers in the mixture
No
Samples
Mic
Linear
density of
fiber
text
Fiber
length
(mm)
Short
Fiber
Index
(SFI)
Comparison
ring power
(g/tex)
Elongation
at break
(%)
1
Cotton fiber
3.6
0.186
32.1
8.4
33.9
7.1
2
Polyester fiber
0.164
38
Table 2
15.4 tex cotton/polyester (80/20) blend yarn spinning plan
by TTYeSI science laboratory
Volume 03 Issue 02-2023
27
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
03
I
SSUE
02
Pages:
24-32
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
(2023:
6.741
)
OCLC
–
1368736135
The result analysis. when we increased the twist
of the 80/20% cotton/polyester blend yarn
intended for weaving from 850 to 918, the
unevenness of the mass of the yarn, the number
of thin and thick areas, the number of tufts and
the coefficients of variation and the Hairiness
decreased. It was found that when the hardness of
the blended yarn was given the 918 twist, the
relative tenacity, tenacity and breaking
performance indicators of the yarns increased.
When we gave 988 twists to the mixed thread, the
thinnest areas of the thread a) and their variation
coefficients b) recorded the highest index. When
spinning 80/20% cotton/polyester blend yarn
intended for weaving, it can be concluded that the
optimal twist option is 918 twists/meter.
a)
b)
Figure 1. By mass of cotton/polyester blend yarns
roughness values a) and their coefficients of variation i b )
18.74
18.94
21.17
17
18
19
20
21
22
850
918
988
C
Vm [
%
]
0.6
0.6
7.9
0
2
4
6
8
10
850
918
988
C
V
(CVm)
N
o
The name of the machines
and brand
O
ut
put
pr
od
uct
l
inea
r
dens
it
y,
tex
N
um
be
r of
add
it
ions
,
d
Str
et
ch
ing
q
uan
ti
ty,
E
Bad tooth
Issuer worker
organ speed
Theor
et
ica
l
pr
oduc
ti
v
it
y
,
kg/
h
α
pr
K
,
tw
/m
V
,
m
/m
in
n,
m
in
-1
1
Card DK-903
5100
320
100
2
Draw HSR-1000
5100
6
6
850
150
3
Roving Zinser-668
530
1
9.62
6.7
29
15,65
4
Spinning Zinser-350
14.7
1
34.4 53.7
850 12,43
11000
0.022
14.7
1
34.4
58
918
12,72
11000
0.022
14.7
1
34.4 62.4
988
13,05
11000
0.022
Volume 03 Issue 02-2023
28
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
03
I
SSUE
02
Pages:
24-32
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
(2023:
6.741
)
OCLC
–
1368736135
Figure 2, when 850 twists were given to the yarn spun from 80/20% polyester/polyester mixture , the thin
areas of the yarn (Figure 2 a) recorded an index of 58 [/km] . When 918 twists are given, the thin areas of
the thread increase by 12%, and we can see that the coefficient of variation according to b) decreases by
42.93%. When we gave 988 twists to the mixed yarn , the thinnest areas of the yarn a) and their coefficients
of variation b) recorded the highest index.
a)
b)
Figure 2. Thin areas of cotton/polyester blend yarns i a) and
their coefficients of variation i b)
Figure 3, a) with the increase in the twist of yarns spun from a cotton/polyester mixture, the number of
thick areas of the yarns decreased , and the highest figure corresponded to the yarn with 988 twists. Mixed
of threads thick places according to v is the coefficient of variation the most less indicators are 1.8 and 2.1
respectively 850 and 918 turns respectively given mixed to the threads right came.
a)
b)
Figure 3. Thick areas of cotton/polyester blend yarns i the number a) and their
coefficients of variation i b )
Cotton/polyester mixed yarns, Fig. 4 a) the lowest indicator of the number of neps and the highest indicator
of their coefficient of variation corresponded to the 850 twisted yarn. When we increased the twist of the
mixed thread from 850 to 918, the number of neps increased, but their variation coefficient decreased by
16.93% according to b).
58
65
393
0
100
200
300
400
500
850
918
988
-50%
[
/km
]
18.4
10.5
74.2
0
20
40
60
80
850
918
988
C
V
(
-50%
)
785
927
950
0
200
400
600
800
1000
850
918
988
+50%
[
/k
m
]
1.8
2.1
29.3
0
10
20
30
40
850
918
988
C
V
(
+50%
)
Volume 03 Issue 02-2023
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International Journal of Advance Scientific Research
(ISSN
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VOLUME
03
I
SSUE
02
Pages:
24-32
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
(2023:
6.741
)
OCLC
–
1368736135
a)
b)
Figure 4. In yarns made from a cotton/polyester blend
number of neps a) and their coefficient of variation b)
In the process of spinning cotton/polyester 80/20% mixed yarn, when we give 850 and 918 twist to yarns,
we can see in Figure 5 a) hairiness index decreased from 5.47 to 4.91 or 10.23%. As the twist of the mixed
yarns increased, the coefficients of variation in hairiness of the yarns b) increased.
a)
b)
Figure 5 . Fluffiness of cotton/polyester blend yarns a) and their coefficient of
variation b)
In Figure 6, when we twist the cotton/polyester mixed yarn from 850 to 918, it was observed that the
yarn's a) specific breaking strength is improved by 11.36% and variation coefficient b) by 12.27%. Burami
988 mixed yarn recorded the lowest relative breaking strength and the highest result in terms of their
coefficient of variation.
455
604
608
0
100
200
300
400
500
600
700
850
918
988
+200%
[
/k
m
]
12.4
2.1
11.2
0
2
4
6
8
10
12
14
850
918
988
C
V
(
N
eps
+200)
5.47
4.91
5.25
4.6
4.8
5
5.2
5.4
5.6
850
918
988
H
0.4
2.1
3.2
0
0.5
1
1.5
2
2.5
3
3.5
850
918
988
C
V
(H
)
Volume 03 Issue 02-2023
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International Journal of Advance Scientific Research
(ISSN
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2750-1396)
VOLUME
03
I
SSUE
02
Pages:
24-32
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
(2023:
6.741
)
OCLC
–
1368736135
a)
b)
Figure 6 . Cotton/polyester blend yarn a) comparison cut off power and b) coefficient
of variation
Fig. 7 a) the work at break of yarn increased from 324.9 [sNcm] to 330.2 [sNcm] when the twist was
increased from 850 to 918 in cotton/polyester 80/20% mixed yarn spinning and recorded the highest
value b) the coefficient of variation decreased by 15.48 indicators. When we gave 988 turns to
cotton/polyester blend yarn, a) work at break decreased by 12.55% and b) coefficient of variation
increased by 11.49%.
a)
b)
Figure 7 . Cotton/polyester blend yarn a) in interruption work
and b) coefficient of variation
Figure 8 is a cotton/polyester 850 and 918 twist blend a) of threads breaking force recorded the same
indicator of 251 [sN], the increase of the twist by 918 resulted in a decrease of the breaking force b)
coefficient of variation by 12.27%. When we increase the twist of the mixed thread to 988, the threads a)
breaking strength decreases by 20.31% and b) coefficient of variation increases by 48.74% was
determined.
15.31
17.05
14.97
13.5
14
14.5
15
15.5
16
16.5
17
17.5
850
918
988
R
km
[sN/tex
]
10.1
8.86
13.18
0
2
4
6
8
10
12
14
850
918
988
C
V
(Rkm)
324.9
330.2
280
240
260
280
300
320
340
850
918
988
B
-wor
k
[sNsm]
15.66
15.48
17.26
14.5
15
15.5
16
16.5
17
17.5
850
918
988
C
V
(B
-wor
k)
Volume 03 Issue 02-2023
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International Journal of Advance Scientific Research
(ISSN
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VOLUME
03
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SSUE
02
Pages:
24-32
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
(2023:
6.741
)
OCLC
–
1368736135
a)
b)
Figure 8 . Cotton/polyester blend yarn a) cut off power
and b) coefficient of variation
C
ONCLUSION
When we increased the twist of the
cotton/polyester 80/20% mixed yarn intended
for weaving from 850 to 918, the unevenness of
the mass of the yarn, the number of thin and thick
areas, the number of naps increased, and the
coefficients of variation and the degree of
hairiness decreased. It was found that when the
twist 918 was given to the hardness of the mixed
yarn, the relative breaking strength, breaking
strength and breaking performance indicators of
the yarns increased. When 988 twist was given,
the unevenness of the mixed yarn increased, the
hardness decreased, and the quality of the yarn
deteriorated. In spinning cotton/polyester
80/20% mixed yarn intended for weaving, it can
be concluded that the optimal twist option is 918
twists/meter.
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03
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SSUE
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Pages:
24-32
SJIF
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