sweater dyeing with pigments
TRANSCRIPT
SWEATER DYEING WITH PIGMENTS
SINKU PAUL-60
PRESENTED BYMD. SHAH MIRAN MUNSHI-54
MD. TANJIR HASIB SHOHAG-56
SHAH MEEM JAHAN-57
MD RASEL MAHMUD-58
WHAT IS SWEATER DYEING?
TYPES OF SWEATER DYEING
REQUIRED MACHINE FOR SWEATER DYEING
DYESTUFF USED FOR SWEATER DYEING
PROCESS OF SWEATER DYEING
FINISHING & DESIGN
CONTENTS
Introduction of Sweater Dyeing
Sweater Dyeing is the process of adding color to the fibers, yarns, and fabrics of a Sweater. This dyeing is normally done in a special solution containing dyes and particular chemical materials. After dyeing, dye molecules have uncut chemical bond with fiber molecules due to temperature & time.
TYPES OF SWEATER DYEING
TYPES OF SWEATER DYEING
WHY PRETREATMENT IS NEEDED???
RECIPE FOR PRETREATMENT
DETERGENT 0.5g/L
SODA ASH 2.0g/L
CAUSTIC SODA 3g/L
HYDROGEN PEROXIDE 3g/L
STABILIZER 1.5g/L
TEMPERATURE 90◦C
PROCESSING TIME 40MIN
Load the sweaters
Load the water M:L=1:25
PROCESS OF SWEATER DYEING
Start M/cAdd Chemicals Supply Steam
1st Step: Pretreatment
Run 5minutes
Drop the liquor
AFTER PRETREATMENT OF SWEATER
PROCESS OF SWEATER DYEING2nd Step Again load water
Raise Temp. at 50◦C
Drop the liquor
Cleaning 5min
PROCESS OF SWEATER DYEING3rd Step
Again Load the Water
Add Acetic Acid
Continue 5min
Drop the liquor
PROCESS OF SWEATER DYEING
Again load water
Add enzyme+acetic acid Run the M/c Raise temp @50 degree
Continue 30min
Drop the liquor
4th Step M:L=1:10
Again load water
PROCESS OF SWEATER DYEING5th Step
Washing 5 min
Drop the Liquor
Again load water6th step
PROCESS OF SWEATER DYEING
Raise Temp. 60 degree
Continue 5min
Drop the liquor
Again load water
Add cationic softener+Soda Ash
Continue 10 min
Raise temp 70 degree
Continue 10 min
Drop the liquor
7th stepPROCESS OF SWEATER DYEING
PROCESS OF SWEATER DYEING8th step Again load water
M:L=1:25
Add 0.5% pigment
Continue 10min
Raise temp 70 degreeWithin 15 min
Continue 20min
Drop the liquor
Dyeing Machinery
Dyeing Machinery
