eyc-presentation final
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Welcome to ourproject presentation
Project title
Comparative study between electronic yarn clearer based on capacitive- and
optical principle
Conducted by
Mowshome Jahan Nisha12.01.06.016
Nazia Afrin12.01.06.170
Iftay Khairul Alam12.01.06.087
Introduction
Yarn clearer
Objectives of the project work
• To work out comparable clearer settings for Loepfe Yarn
Master Zenit & Uster Quantum-2 using the conversion chart
provided by the Loepfe Brothers Ltd.
• To process samples using the clearer settings for both types of
yarn clearer and to carry out different tests of the sample
before & after processing through the yarn clearer in Uster
Evenness Tester (UT-5).
• To analyze the test results and assess the effectiveness of the
conversion chart based on them.
Literature review
The Capacitive measuring principle
• Two parallel metal plates
known as electrode(1), builds
an electric field(2) between
them.
• When a yarn(4) is brought into
this field the capacitance of the
measuring condenser changes.
• From this change, an electrical
signal(5) is derived.
Optical measuring principle
• The infrared light source (1) and
the photocell (3) forms the sensor.
• The infrared light is scattered by a
diffuser (2) in the light field and
reaches the photocell (3).
• If a yarn (4) is brought in the light
field, parts of the light will be
absorbed by the yarn.
• Remaining portion of light hits the
photocell from which an electric
signal(5) is derived.
Types of yarn faults
Acceptable yarn faults, namely those which are tolerated for the sake of machine efficiency, and Objectionable yarn faults.Acceptable yarn faults, namely those which are tolerated for the sake of machine efficiency, and Objectionable yarn faults.Acceptable yarn faults, namely those which are tolerated for the sake of machine efficiency, and Objectionable yarn faults.
As yarn clearing is always a compromise between quality and
production, i.e. between the maximum possible number of yarn
faults which could be removed and the minimum acceptable
production loss. So, based on this, yarn faults are of classified
into,
1. Acceptable yarn faults
2. Objectionable yarn faults
Yarn body defines the nominal yarn with its tolerable, frequent yarn faults. The green shaded area represents
the yarn body.
Nep sShort thick Long thick
Thin
Classification matrix used by Quantum-2 yarn clearer
Classification matrix of capacitive yarn clearer (Uster Quantum-2)Classification matrix of capacitive yarn clearer (Uster Quantum-2)
% o
f m
ass v
aria
tion
Classification matrix used by Loepfe Yarn Master Zenit
Tim
es o
f dia
met
er v
aria
tion
1. Nep channel
2. Thick places (S, L channel)
3. Thin places (T channel)
4. Count variations (C & CC
channel)
5. Periodic yarn faults (Pearl
chain channel)
6. Foreign fibres (F channel)
7. Vegetable filter (Veg channel)
Channels of Quantum-2
Channels of Loepfe Yarn Master Zenit
1.N-channel (Neps)
2.S-channel (Short thick faults)
3.L-channel (Long thick faults)
4.T-channel (Thin place)
5.Splice channel
6.Yarn Count channel
7.Short count channel.
Conversion chart of capacitive- and optical yarn clearer
Channel Quantum-2
N 250%S 100%, 1L 28%, 26T -25%, 25
Loepfe3.21.8, 1.96, 26-25%, 25
Channel Quantum-2
N 250%S 100%, 1L 28%, 26T -25%, 25
Materials and Methods
Fibres used
100% cottonCameron 3.7 Mic 33 mm
Chad 4.4 Mic 29 mmPolyester China 1.4 Den 32 mm
The mixing ratio of cotton was 60% Cameron cotton+40% Chad cotton
Samples used100% cotton yarn samples Blended yarn samples
10 Ne combed yarn 30 PC (50%+50%) (combed)30 Ne combed yarn 40 PC (50%+50%)32 Ne combed yarn 45 PC (50%+50%) 40 Ne combed yarn 40 CVC (60%+40%)40 Ne carded yarn 45 CVC (55%+45%) (combed)
Flow charts of the experimental process1. For carded cotton yarn
Blowroom
Carding
Breaker draw frame
Finisher draw frame
Simplex
Ring frame
Winding
2. For combed cotton yarn
Blowroom
Carding
Pre-comb drawing
Lap former
Comber
Post comb drawing
Simplex
Ringframe
Winding
3. For blended yarn (card)
Blowroom
Cotton Carding
Rotopic
Tuftomat
Polyester carding
Drawframe I, II, III
Finisher drawframe
Simplex
Ring frame
Winding
4. For blended yarn (combed)Blowroom
Cotton Carding
Cotton breaker drawframe
Lap former
Comber
Rotopic
Tuftomat
Polyester carding
Drawframe I, II, III
Finisher drawframe
Simplex
Ring frame
Winding
Machinery used
Machine name: Winding Machine
Manufacturer : Muratec, Japan
Model: 21C
Function: To produce cones
Machine name: Uster Quantum-2
Manufacturer : Zellweger Uster, Switzerland
Model: SE 617
Function: To remove yarn faults
Machine name: Loepfe Yarn master
Manufacturer : Loepfe Brothers Ltd., Switzerland.
Model: Zenit
Function: To remove yarn faults
Machine name: Uster HVI
Manufacturer : Zellweger Uster, Switzerland
Function: To test bundle fibre
Machine name: Uster AFIS pro-2
Manufacturer : Zellweger Uster, Switzerland
Function: To test single fibre
Machine name: Uster Evenness Tester
Manufacturer : Zellweger Uster, Switzerland
Model: UT-5
Function: To test evenness of yarns, rovings and slivers
Machine name: Auto wrap
Manufacturer : MAG, India
Function: To wrap yarns into skeins
Machine name: Uster Autosorter
Manufacturer : Zellweger Uster, Switzerland
Function: To weigh certain lengths and give English
Counts (Ne)
Fibre Testing
Parameters from Blowroom to winding were noted
From one ring frame, 5 cops of 10Ne are selected and yarn count was tested
Evenness of the yarn of those cops were tested using UT-5
5 full cones were wound on 5 drums of Muratec 21-C winding machine using Uster Quantum 2 as yarn clearer
Comparable settings for the Loepfe Yarn Master Zenit were derived by conversion chart
5 full cone packages were wound in 5 drums of winding machine by using Loepfe Yarn Master Zenit settings
Both sets of cones were tested in Uster Evenness Tester (UT-5) in quality control laboratory
This whole process was repeated for rest of the samples
Working procedure
Yarn clearer settingsFor 10Ne 100% combed cotton yarn
Channel Uster Quantum-2 Loepfe Yarn MasterN 240% 3.10S 95%, 1 1.70, 1L 25%, 25 0.77, 25T -22%, 22 -22%, 22
For 30Ne 100% combed cotton yarnChannel Uster Quantum-2 Loepfe Yarn Master
N 250% 3.2S 100%, 1 2.0, 1.L 28%, 26 0.96, 26T -25%, 25 -25%, 25
For 32Ne 100% combed cotton yarn
Channel Uster Quantum-2 Loepfe Yarn MasterN 250% 3.2S 120%, 1.2 2.0, 1.2L 25%, 25 0.85, 25T -22%, 22 -22%, 22
For 40Ne 100% combed cotton yarn
Channel Uster Quantum-2 Loepfe Yarn MasterN 250% 3.2S 110%, 1.5 1.9, 1.5L 28%, 25 0.96, 25T -25%, 25 -25%, 25
For 40Ne 100% carded cotton yarn
Channel Uster Quantum-2 Loepfe Yarn MasterN 250% 3.2S 110%, 1.5 1.9, 1.5L 28%, 25 0.96, 25T -25%, 25 -25%, 25
For 30PC blended yarn
Channel Uster Quantum-2 Loepfe Yarn MasterN 250% 3.2S 100%, 1 2.0, 1.2L 28%, 26 0.96, 26T -25%, 25 -25%, 25
For 40PC blended yarn
Channel Uster Quantum-2 Loepfe Yarn MasterN 250% 3.2S 110%, 1,5 2.0, 1.2L 28%, 25 0.96, 26T -25%, 25 -25%, 25
Channel Uster Quantum-2 Loepfe Yarn MasterN 280% 3.5S 110%, 1.5 1.9, 1.5L 30%, 30 1.5, 30T -32%, 32 -32%, 32
For 45PC blended yarn
For 40CVC blended yarn
Channel Uster Quantum-2 Loepfe Yarn MasterN 250% 3.2S 110%, 1.5 1.9, 1.5L 28%, 25 0.96, 25T -25%, 25 -25%, 25
For 45CVC blended yarn
Channel Uster Quantum-2 Loepfe Yarn MasterN 280% 3.5S 110%, 1.5 1.9, 1.5L 30%, 30 1.5, 30T -32%, 32 -32%, 32
Graphical representations
Comparison of Irregularity (U%) of 100% cotton ring yarn and cone yarn
10 CW 30 CW 32 CW 40 CW 40 KW0
2
4
6
8
10
12
5.608.
08 8.43 9.
06
10.7
8
5.55
8.28 8.
75 9.12
11.2
6
5.69
8.59 8.77 9.
24
11.2
1
Ring Quantum-2 Loepfe
U%
Comparison of Irregularity (U%) of blended ring yarn and cone yarn
30 PC 40 PC 45 PC 40 CVC 45 CVC 0
2
4
6
8
10
12
14
16
18
209.
82 10.6
9 12.10 11.90
10.2
3
10.7
5
10.8
1
12.1
1
11.8
5
10.3
6
10.7
9
11.0
2
11.90 12.2
4
10.1
2
Ring Quantum-2 Loepfe
U%
Comparison of mass variation (CVm%) of 100% cotton ring yarn and cone yarn
10 CW 30 CW 32 CW 40 CW 40 KW0
2
4
6
8
10
12
14
16
7.05
10.1
9 10.6
2
11.3
9
13.7
1
7.01
10.4
5 11.1011.50
14.3
3
7.18
10.9
1
11.0
3
11.7
5
14.3
2
Ring Quantum-2 Loepfe
CV
m%
Comparison of mass variation (CVm%) of blended ring yarn and cone yarn
30 PC 40 PC 45 PC 40 CVC 45 CVC 0
2
4
6
8
10
12
14
1612
.44 13.60
15.4
1
15.20
12.8
9
13.6
413.80
15.4
3
15.1
2
13.0
7
13.6
6
14.10
15.2
2
15.6
3
12.7
7
Ring Quantum-2 Loepfe
CV
m%
Comparison of -50% thin places of 100% cotton ring yarn and cone yarn
10 CW 30 CW 32 CW 40 CW 40 KW0
1
2
3
4
5
6
7
8
9
10
0 0 0 0 00 0 0 0
2.5
0 0 0 0
3
Ring Quantum-2 Loefpe
-50%
thin
pla
ce
Comparison of -50% thin places of blended ring yarn and cone yarn
30 PC 40 PC 45 PC 40 CVC 45 CVC 0
5
10
15
20
25
30
35
40
45
1.5
1
22.5
11
3
4.5
3.5
18 17
22.5
6
15
20
3.5
Ring Quantum-2 Loepfe
-50%
thin
pla
ce
Comparison of -40% thin places of 100% cotton ring yarn and cone yarn
10 CW 30 CW 32 CW 40 CW 40 KW0
20
40
60
80
100
120
140
160
180
2000 1.
5 4.5
23.0
103.
5
0 3.5 8.
5
22.5
154.
5
0 4.5 9.
522.0
156.0
Ring Quantum-2 Loefpe
-40%
thin
pla
ce
30 PC 40 PC 45 PC 40 CVC 45 CVC 0
50
100
150
200
250
300
350
40065
84
387.
5
277
96.512
0 133
376.
5
360
118.
5147 15
8.5
358 369
108
Ring Quantum-2 Loepfe
-40%
thin
pla
ceComparison of -40% thin places of blended ring yarn and cone yarn
Comparison of +50% thick places of 100% cotton ring yarn and cone yarn
10 CW 30 CW 32 CW 40 CW 40 KW0
20
40
60
80
100
120
140
160
180
200
0.5 3 4.
5 7.5
82.5
1
10.5
10.5
10
125
2.5 8.
5
10 12
147
Ring Quantum-2 Loefpe
+50%
thic
k pl
ace
Comparison of +50% thick places of blended ring yarn and cone yarn
30 PC 40 PC 45 PC 40 CVC 45 CVC 0
50
100
150
200
250
300
43
88
184.
5
246.
5
31
59.5
102
208
256.
5
36
70
115.
5
180.
5
260
24
Ring Quantum-2 Loepfe
+50%
thic
k pl
ace
Comparison of Neps (+200%) of 100% cotton ring yarn and cone yarn
10 CW 30 CW 32 CW 40 CW 40 KW0
50
100
150
200
250
300
350
400
1.5 13.5
14.5 37
189
1.5 23
.5
31
46
312.
5
2
23 31 38.5
282
Ring Quantum-2 Loepfe
Nep
s +20
0%
Comparison of Neps (+200%) of blended ring yarn and cone yarn
30 PC 40 PC 45 PC 40 CVC 45 CVC 0
50
100
150
200
250
300
350
400
45088
.5
215
273.
5 319.
5
89.5
158
350
432.
5
445.
5
125.
5
154.
5
387.
5 438
442.
5
104
Ring Quantum-2 Loepfe
Nep
s +20
0%
Comparison of IPI of 100% cotton ring yarn and cone yarn
10CW 30CW 32CW 40CW 40KW0
50
100
150
200
250
300
350
400
450
2 16.5
19
44.5
271.
5
2.5 34 41
.5 56
440
4.5 31
.5 41 50.5
432
Ring Quantum-2 Loepfe
IPI
Comparison of IPI of blended ring yarn and cone yarn
30 PC 40 PC 45 PC 40 CVC 45 CVC 0
100
200
300
400
500
600
700
800
133
304
480.
5 577
123.
5222
455.
5
658.
5 719
163.
5227
509
633.
5 722.
5
142
Ring Quantum-2 Loepfe
IPI
Number of cuts for 100% cotton for the yarn processed by Quantum-2 and Loepfe
10 CW 30 CW 32 CW 40 CW 40 KW0
20
40
60
80
100
120
14078
.6
64.6
87.9
76.1
138.
4
84.3
77.3 79.7
7
80.8
3
132
Quantum-2 Loepfe
Num
ber
of c
uts/
100
km
Number of cuts for blended yarn for the yarn processed by Quantum-2 and Loepfe
30 PC 40 PC 45 PC 40 CVC 45 CVC0
10
20
30
40
50
60
70
80
9070
.11 82
.56
73.5
4 83.3
2
78.1
1
78.1
2
78.6
7
67.4
4
88.4
4
83.4
3
Quantum -2 Loepfe
Num
ber o
f cut
s/10
0 km
SEF% for 100% cotton for the yarn processed by Quantum-2 and Loepfe
10 CW 30 CW 32 CW 40 CW 40 KW0
10
20
30
40
50
60
70
8076
.6
78
64.7 74
.7
73.479
.99
73.3
4
69.5
9
70.0
5
68.8
6
Quantum - 2 Loepfe
SEF%
SEF% for blended yarn for the yarn processed by Quantum-2 and Loepfe
30 PC 40 PC 45 PC 40 CVC 45 CVC0
102030405060708090 80
.1
75.8
7
77.1
6
69.3
7
72.1
175.3
8
74.8
7
72 67.1
7
70.0
9
Quantum -2 Loepfe
SEF%
1. The hairiness module of Uster Evenness Tester-5 was
defective. Therefore, the data of hairiness property were not
reliable to use.
2. The splicer parameters were not shared with us as the factory
authority was adamant about it.
Limitations
Conclusion
• From the graphical representations of different results, it is clearly seen that both the EYC devices provide similar type of outcome when their settings are converted by the conversion chart.
• Both EYC devices can be useable on parallel for a specific yarn count in industry in order to increase the flexibility of EYC & the utilization of winding machine.
THANK YOU
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