eyc-presentation final

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


Function: To test bundle fibre

Machine name: Uster AFIS pro-2


Function: To test single fibre

Machine name: Uster Evenness Tester


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


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


For 40Ne 100% carded cotton yarn


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


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

For 40CVC blended yarn


For 45CVC blended yarn


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


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


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


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


-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


-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


-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


+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


+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


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


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


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


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

eyc-presentation final

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