sweater dyeing with pigments

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