This presentation discusses the process of dip dyeing garments. It begins with an introduction and background of the presenter. Then, it defines different types of dyeing including dip dyeing. The document proceeds to describe the dip dyeing process which involves immersing garments in dye baths to create gradients from darker at the bottom to lighter at the top. It provides details on the equipment, pre-treatment, recipes, and step-by-step working procedures for dip dyeing a batch of baby girl shorts.

1. Welcome To my
Presentation
MD.AZMERI LATIF BEG
ID: 142-32-257
M. Sc in Textile Engineering
Specialized in Apparel Manufacturing, Processing and Designing

2. /Dip Dyeing/

3. Different Types of Garments
Dyeing?
• Spray Dyeing.
• Dip Dyeing.
• Over Dyeing.
• Cold Dyeing.
• Tie-Dyeing.

4. Dip Dyeing
• Dip Dye : Immerse (a yarn or fabric) in a special solution in
order to color it.
• Dip dye (also known as "tip dyeing") is a hair coloring style
that involves dipping the ends of the hair into either a
naturally colored dye or a bright colored dye - which is
generally a more popular choice. Dip dye originates from the
process of tie dyeing clothing (especially T-shirts). Dip-dyeing
and the ombre hairstyle are similar, however, dip dyeing
usually involves brighter neon colors than an ombre style,
which is typically a more blended and natural coloration

5. Dip Dyeing
• In garments dyeing, dip dyeing is becoming more popular day
by day as the fashion trend and customer demand. Due to
cheap and easy process it is as popular to the manufacturers.
It is also as called gradient dyeing. It is the process, the fully
fashioned garments are arranged to dip into a dye bath
(vessel, bucket, bowl etc.) accordingly a pre-determined area
or height. This process runs again and again. According to
demand, garments are to be soaked into dye bath up to a
certain limit for enough time. To dye up the garment as
deeper shade to light shade from bottom to top the gradient
time will be maintained for certain area of the garment.

6. Equipment Used
1) Dye Bath ( Vessel, bucket, bowl or any other container)
2) Hanger.
3) Washing Machine.
4) Stirrer.
5) Rubber Gloves.

7. Pre -Treatment
• Pretreatment: As the fabric is not ready for dyeing after
making cloths, it is treated with caustic soda and peroxide
solution to perform pretreatment process which helps to
make it more absorbent and free from natural color as well as
other impurities.

8. Common Recipe
• Caustic Soda (Noah)-2gm/l
• Per-Oxide (H2O2)-4gm/l
• Detergent-1gm/l
• Temp-80°C
• Time-15min

9. Recipe for DIP Dyeing
• Recipe: We have used this for dyeing 380 Pcs baby girls shorts.
• Direct Dye-355gm
• Salt (Glubar Salt)-10gm/l
• Labeling & Wetting Agent-1gm/l
• Water-2500L
• Temp-95°C
• Time-5min

10. Working Procedure
# Make the dye bath ready with direct dye as normal dyeing
procedure. At first we will be sure the garment is made from
scoured and bleached fabric, otherwise scouring or pre
treatment will have to complete. After adding dyes, salt and
wetting agents it needs to stir to make the dye bath properly. For
getting more color fastness and reduce fixation hours we can use
some binding agents as we need. The temperature of dye bath
remains around 90-95°C.

11. Working Procedure
• The garment which is used to dyeing need to attach with
hanger or something else to hang it from, then water uses to
wet the garment properly before taking it underneath the dye
bath. Now start to place the garment into the dye bath as
desired height. You may require helps in doing this so as not to
spill the dye everywhere. Once the garment has been soaking
in the dye bath for long enough time then remove it carefully
so that color spot does not transfer to the non-dyed portion.

12. Working Procedure
• If so, run the garment, from non-dyed section to dyed section,
under warm water until water runs clear. This will remove any
excess dye from the garment. Continue the process till your
desired shade is developed and maintain the shade at
different areas of the garment. To get as deeper to lighter
shade at bottom to top you can soak the garment into dye
bath as long enough time. The process of dip dyeing is not so
crucial but it takes extra precautions, care and many more
times. During dyeing it will take spraying some water to the
garment to wet it and helps to absorb colors by the material

13. Working Procedure
• Once your desired shade produced it needs to take it into a
washing machine.
• Note: If the garments are made with zipper of cotton tape
frequently be torn during the scouring process, so nylon or
polyester tape is recommended to use here.

14. Working Procedure
• Enzyme: After scouring process the full quantity of garment
needs to treat with enzyme which will help to remove the
hairiness and projectile fibers as well as make the garments
ready for dyeing. You can use Acid enzyme as 2gm/l at 45-55°C
for 15 minutes. After enzymatic treatment one or two rinse
wash to be done for washing it properly. (PH during enzymatic
treatment keeps in 4.5 to 5)

15. Working Procedure
• After Treatment: It is the process usually doing after dyeing
for color fixation and color permanency as well as improving
the color fastness. This is a chemical treatment so as for this a
typical recipe is given below.
• Recipe:
• Commercial Fixer-0.5gm/l
• Softener (Cationic)-0.5 gm/l
• Temp-40°C
• Time-3-5 minutes
• M:L ratio- 1:10

16. Working Procedure
• Working Procedure: After completing the dyeing it will be
required some process to have sufficient dye molecules
penetration to the most inner part of the fibers. In the dye
bath now adds the fixing agent (Commercial Fixer) according
to the recipe. Temperature in this bath will keep at 40°C and
treatment time is 3-5 minutes. By this treatment the material
will be treated as finally colored. Most of the dye particles will
finally enter into the core of fibers and the fiber will swell at
some extent so that the pores of fibers will be reduced and
dye materials cannot come out from the innermost part.

17. Working Procedure
• It will increase the color fastness of the materials. Before this
treatment is started a rinse wash will be done to remove extra
dyes which adhere with the materials and after this process
also another rinse will be done to remove unfixable dyes or
sediment dyes at the bottom of the dye bath. Now softener is
added to the bath to make the material softer, improving hand
feel and brightness

18. Working Procedure
• Now just hanging up the garments for 20 minutes to squeeze
extra water (Do not use hydro extractor to reduce staining or
uneven color adhering). You can use oven to dry the garments
as well, you can get prominence color performance without
staining or shade variation. Now the garments are cured at
curing chamber at 150-200°C to dry finally and properly. You
can use dryer for a while at the final stage.

19. Thanks
Everybody.