1.
WEL COME
TO MY
PRESENTIO
N Foysal Ahmed

2.
Lets come to the topic
Woven
Fabric
Dyeing.

3.
Woven fabric is produced with interlacement of warp
and weft yarn. The importance of woven fabrics
increases constantly. Starting from traditional uses
mainly in clothing applications.

4.
Use:
Woven fabrics today are key materials for structural,
electronic, telecommunications, medical, aerospace
and other technical application fields

5.
Woven fabric dyeing process is different from knit
fabric dyeing process. Jigger dyeing machine is
used in woven dyeing.

6.
FLOWCHART OF WOVEN FABRIC DYEING:
GRAY FABRIC INSPECTIO
↓
STITCHING & BRUSHING
↓
SINGEING
↓
DSIZING
↓
SCOURING
↓
BLEACHING MERCERISING
↓
DYEING ← → PRINTING
↓ ↓
FINISHING

7.
DYEING:
Dyeing is proper way to coloration of textile material
(fiber, yarn, woven fabric, knitted fabric, non-woven
fabric). Suitable dyestuff, dyeing machine and dyes
chemical is required for achieving proper dyeing
shade.

8.
TYPES OF DYEING:
1. Fiber Dyeing
2. Yarn Dyeing
3. Fabric Dyeing
4. Garment Dyeing

9.
SINGEING:
Singeing is the first step of dyeing. Singeing
is important for a fabric to provide a smooth
finish. Woven fabric goods usually contain
protruding fibers from textile yarns. Singing
process is used to remove those protruding
fibres from the surface of the fabric.

10.
DESIZING:
Desizing is an important dyeing preparation step.
During weaving sizing material is used to increase
the strength of warp yarn. The sizing material is
hydrophobic in nature. That’s why it must be
removed before dying. Desizing is the process to
remove the size material from the fiber.

11.
BLEACHING :
Bleaching is a complex process. The most common
bleaching agents include sodium chlorite, hydrogen
peroxide, sulfur dioxide gas and sodium
hypochlorite. All the natural fiber contains a natural
color which is harmful for dyeing shade matching.

12.
MERCERIZING:
Mercerization is used to increase appearance, luster
and dye ability of textile fiber. Mercerizing is a semi-
continuous or continuous chemical process used for
cotton and cotton/polyester goods

13.
PRINTING :
Printing is the process to make colors on the textile
materials with the presence of thickener to give sharp
design. The thickener will be removed after the
printing process to make softer handle.

14.
FINISHING:
Finishing is the last steps of dyeing. Actually dyeing
finishing is required for quality assurance of dyed
fabric. There are different types of finishing those
actually depends on buyer requirement.

15.
There are two types of finishing:
I. Chemical finishing
ii. Mechanical finishing.

16.
Chemical finish: Here finishing effect is brought out
by means of chemical. Some examples are:
I. Optical finishing
ii. Resin finishing
iii. Antimicrobial finishing

17.
Mechanical Finishing: Here finishing effect is
brought out by means of mechanical application
some examples are:
I. Calendaring
ii. Heat setting
iii. Brushing
iv. Compacting

18.
Methods in continuous dyeing process
O Pad-steam
O Wet-steam
O thermo sol dyeing
O TAK dyeing
O space dyeing
O Pad-steam dyeing long chain warp dyeing etc.

19.
THANK YOU