training reprt

7/29/2019 training reprt

http://slidepdf.com/reader/full/training-reprt 1/13

GPI TEXTILE LIMITED

2012

PROJECT REPORT

Effect of RSB Break Draft on Yarn

Quality in OPEN END at 1.28 and

1.16 BD

Under the guidance of Submitted by :

Mr. MOHAN SINGH VINESH SINHMAR (PRODUCTION MANAGER ) (TRAINEE FROM TIT&S)

B H A R A T G A R H R O A D , N A L A G A R H , H I M A C H A L P R A D E S H



PROJECT REPORT on

“ Effect of RSB Break Draft on Yarn

Quali ty in OPEN END ”

Nalagarh, Himachal Pradesh Bhiwani, Haryana

Under the guidance of SUBMITTED BY: Mr. MOHAN SINGH VINESH SINHMAR

(PRODUCTION MANAGER ) (TRAINEE from TIT&S)



ACKNOWLEDGEMENT

I would like to express my whole hearted thanks &

gratitude to Mr. L. K. Singh ( Executive Director ), Mr. Harish

Sharma ( DGM-HRM ), Mr. Anil Rai (GM-HRM ), Mr. Gurkirat

Singh ( Dy.Manager-HRM ), Mr. Soni Kumar( A-HRM ), for granting

me permission to undergo summer training in their esteemed

organization.

I would like to express my deep gratitude to Mr. K.C.

Bhushan (V.P. Prod. & Maint .), Mr. Shakeel Ahmad ( DGM-

Production), Mr. Ajay Sahoo ( Maintenance head ) Mr. Mohan Singh

( Production incharge), as completing the project without their valuable suggestions & extreme cooperation is not an easy job.

I am also extremely thankful to Mr. Mohan Singh

(Production incharge ) for helping me at every step.

Last but not least, I am thankful to all the staff members for

their kind cooperation.



CONTENTS

Topic Page

Introduction: Draw frame 4

The Factors that affect the Yarn Quality 4

Procedure 5

Observations 6

Summary 9

Analysis 10

Conclusion: 11



Introduction

Drawframe

Drawframe is a very critical machine in the spinning process. It's influence onquality, especially on evenness is very big. If drawframe is not set properly, it will

also result in drop in yarn strength and yarn elongation at break. The faults in the

sliver that come out of drawframe cannot be corrected. It will pass into the yarn.

Drafting System:

The Factors that affect the Yarn Quality are

No of draw frame passages

The total draft

Break draft

Gauge between Rollers

No of doublings

Grams/meter of sliver fed to the drawframe

Fibre length

Fibre fineness

Delivery speed

Type of drafting

Type of autoleveller

Autoleveller settings

So Back Draft & Gauge have very much importance when other parameters are constant.

And change in the Parameters will sure affect the quality of the yarn.



Procedure followed for the observation:

First selected a particular Finisher Draw Frame (RSB-951), No.2 and collected Six cans

each containing cotton Sliver. The samples were consisting of 100% cotton of hank

step 1

The back draft in RSB 951 was set to 1.28

Ten cans were filled each of 500 meter sliver at 1.28 brk draft

Now the U% RSB-951 sliver was tested/checked in R&D lab

These cans were placed for supply material for a particular ROTOR (R1) -2 in mill-4 on rotor no-

3,7,11,33,75,111,123,151,155,157

Ten Packages were formed from 10 cans containing 500 m RSB sliver

Hank = 10sKW

These packages were collected for further test

Step 2

In the same manner RSB brk draft is changed to 1.16

Again 10 cans of RSB was collected and U% was checked

Test no. Um

(%)

CVm

(%)

CVm

(1m)

(%)

CVm

(3m)

(%)

CVm

(10m)

(%)

Rel.

count

(%)

m(max.1m)

(%)

m(min.1m)

(%)

1 7.15 9.03 1.37 1.16 0.00 100.0 +3.3 -3.1



Observations

Test no. Um

(%)

CVm

(%)

CVm

(1m) (%)

CVm

(3m)

(%)

CVm

(10m)

(%)

Rel.

count

(%)

m(max.1m)

(%)

m(min.1m)

(%)

1 7.23 9.09 0.79 0.56 0.00 100.0 +2.1 -2.3

Again the cans were placed on the same ROTOR m/c and on the same rotors of the

previous sample (rotor no-3,7,11,33,75,111,123,151,155,157 )

Ten Packages were formed from 10 cans containing 500 m RSB sliver

Hank = 10s KW

All these observations were made on the same particular machine (Finisher Draw Frame ,

ROTOR-2)

The samples ( ROTOR yarn) thus made at different stages on same m/c and same rotors

are tested on Uster Tester-3 in R& D Lab at the Mill for U%, CSP, COUNT, RKM, CV%,

Thin Places, Thick Places, Neps and Hairiness.

The results obtained are examined and analyzed on the basis of U% and Imperfection

Index.



Observations

ROTOR yarn test of RSB brk draft = 1.28

Test

no.

Um

(%)

CVm

(1m)(

%)

Thin

place

(-

40%)

Thin

place

(-50%)

Thick

place

(+50%

)

Neps

+200

%

Neps

+280

%

Rel.

count

(%)

Hairines

s

(-)

Sh

(-)

1 12.25 8.53 62 0 33 121 18 101.0 7.27 1.70

2 13.11 9.45 175 8 32 147 19 98.1 7.46 1.75

3 13.18 8.64 143 2 52 364 52 102.3 9.25 2.05

4 13.80 10.02 154 1 45 263 37 99.9 7.83 1.835 12.25 9.03 67 2 29 127 26 100.6 7.98 1.83

6 12.24 8.81 77 3 24 166 28 98.0 8.66 1.95

Mean

value12.80 9.08 282/km 7/km 90/km 495/km 75/km 100.0 8.08 1.85

CVb

%5.13 6.21 44.1 105.2 29.4 48.6 42.6 1.69 9.30 6.97

Q95%

+/-

0.69 0.59 131 7 28 253 43 1.8 0.79 0.14

RKM 8.36

COUNT 10.09

CSP 1197

CV 18.03

ELONGATION 4.51

CV% 11.82

Min 4.17



ROTOR yarn test of RSB brk draft = 1.16

Testno.

Um(%)

CVm(1m)(%)

Thinplace

(-40%)

Thinplace

(-50%) Thick place

(+50%)

Neps+200% Neps+280% Rel.count

(%)

Hairiness(-) Sh(-)

1 12.11 8.46 81 3 30 130 15 98.8 7.06 1.67

2 12.49 7.59 122 6 43 230 29 97.4 7.04 1.73

3 12.82 7.92 196 7 35 274 25 96.2 7.03 1.71

4 11.87 8.43 59 0 26 147 17 104.8 7.82 1.85

5 11.52 7.86 39 0 18 147 20 102.1 7.73 1.84

612.51 9.36 71 1 27 127 18 100.8 8.52 1.93

Mean

value

12.22 8.27 237/km 7/km 75/km 440/km 52/km 100.0 7.53 1.79

CVb % 3.91 7.56 60.0 108.0 28.6 34.8 25.7 3.18 8.00 5.60

Q95%

+/-

0.50 0.66 149 8 22 161 14 3.3 0.63 0.11

RKM 8.85

COUNT10.07

CSP 1180

CV 16.31

ELONGATION 4.81

CV% 12.06

Min 3.27



Summary

RSB sliver

RSB br. Draft 1.28 1.16

RSB U% 7.15 7.23

O/E yarn

U % 12.80 12.22

Thin place (-40%) 282/km 237/km

Thin place (-50%) 7/km 7/km

Thick place (+50%) 90/km 75/km

Neps (+200%) 495/km 440/km

Neps (+280%) 75/km 52/km

Total IPI 172 134

RKM 8.36 8.85

CV 18.03 16.31

Elongation 4.51 4.81

Count 10.07 10.07

Count CV % 11.82 12.06

Main RKM

CSP 1197 1180



Analysis

Analysis for the average values of various results of RSB Brk draft = 1.28

& 1.16

The average value of U% is found to be minimum for 1.16 BD.

The CV% (1m) are found to be minimum for 1.16 BD..

The Average Thin Places (-40%) per km are minimum for 1.16 BD..

The Average Thick Places (+50%) are found to be minimum for 1.16 BD..

The Average value of Neps (200%) is found to be minimum for 1.16 BD.

The Average Hairiness is found to be minimum for 1.16 BD.

The average IPI value is found to be minimum for 1.16 BD.



Conclusion:

U% : U% of the ROTOR yarn is found to be minimum for 1.16 BD.

CV% (1m) : CV% (1m) of the ROTOR yarn follows the same trend as the U% . CV% of

the yarn is found to be minimum for 1.16 BD.

Thin Places (-50%) : Average Thin Places (-50%) per km are found to be same for both

1.16 BD. and 1.28 BD..

Thick Places (+50%) : The average Thick Places (+50%) are minimum for 1.16 BD.

Neps : Neps are found to be minimum for 1.16 BD.

Hairiness : Hairiness of the yarn is found to be minimum for 1.16 BD.

Imperfection : The imperfection is found to be minimum for 1.16 BD.

training reprt

Documents