This presentation is my graduation internship presentation at BSL (LNJ group) Bhilwara (Rajasthan).
In this presentation I describe BSL company profile, Process significance, all steps which use for fibre to fabric in textile.
DEFINITION: Pigment is a substrate in a particulate form which is insoluble in water but which can be dispersed in this medium to modify its color and light scattering properties. They are organic or inorganic coloring materials. They have no affinity to textile materials. They are fixed on the textile material with the help of binding agent in form a thin invisible coating.
2 Pre treatments of textile material.pptROHIT SINGH
The basic objective of pretreatment processing is removal of added or natural impurities present in textile fibres to improve the absorbency.
BY:ROHIT SINGH
For meeting the demand of 21th Century we need many qualified Textile Engineer but in our perspective there are two types of Textile Engineer one is more qualified another is more frantic about their position. No Frustration because you are the right key to touch your success. Don’t draw your life map with pen but pencil (because pencil is erasable). Let bygones be bygones & go ahead with our future as if it will be keep in touch. Make a whistle with vivacious life & vivid future.
This presentation is my graduation internship presentation at BSL (LNJ group) Bhilwara (Rajasthan).
In this presentation I describe BSL company profile, Process significance, all steps which use for fibre to fabric in textile.
DEFINITION: Pigment is a substrate in a particulate form which is insoluble in water but which can be dispersed in this medium to modify its color and light scattering properties. They are organic or inorganic coloring materials. They have no affinity to textile materials. They are fixed on the textile material with the help of binding agent in form a thin invisible coating.
2 Pre treatments of textile material.pptROHIT SINGH
The basic objective of pretreatment processing is removal of added or natural impurities present in textile fibres to improve the absorbency.
BY:ROHIT SINGH
For meeting the demand of 21th Century we need many qualified Textile Engineer but in our perspective there are two types of Textile Engineer one is more qualified another is more frantic about their position. No Frustration because you are the right key to touch your success. Don’t draw your life map with pen but pencil (because pencil is erasable). Let bygones be bygones & go ahead with our future as if it will be keep in touch. Make a whistle with vivacious life & vivid future.
Dyeing is the application of dyes or pigments on textile materials such as fibers, yarns, and fabrics with the goal of achieving color with desired color fastness. Dyeing is normally done in a special solution containing dyes and particular chemical material. … In dyeing, it is applied to the entire textile.
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Johnny Depp, synonymous with eclectic roles and unparalleled acting prowess. has also been a significant figure in fashion and style. Johnny Depp long hair is a distinctive trademark among the various elements that define his unique persona. This article delves into the evolution, impact. and cultural significance of Johnny Depp long hair. exploring how it has contributed to his iconic status.
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Introduction
Johnny Depp is an actor known for his chameleon-like ability to transform into a wide range of characters. from the eccentric Captain Jack Sparrow in "Pirates of the Caribbean" to the introspective Edward Scissorhands. His long hair is one constant throughout his evolving roles and public appearances. Johnny Depp long hair is not a style choice but a significant aspect of his identity. contributing to his allure and mystique. This article explores the journey and significance of Johnny Depp long hair. highlighting how it has become integral to his brand.
The Early Years: A Budding Star with Signature Locks
1980s: The Rise of a Young Heartthrob
Johnny Depp's journey in Hollywood began in the 1980s. with his breakout role in the television series "21 Jump Street." During this time, his hair was short, but it was already clear that Depp had a penchant for unique and edgy styles. By the decade's end, Depp started experimenting with longer hair. setting the stage for a lifelong signature.
1990s: From Heartthrob to Icon
The 1990s were transformative for Johnny Depp his career and personal style. Films like "Edward Scissorhands" (1990) and "Benny & Joon" (1993) saw Depp sporting various hair lengths and styles. But, his long, unkempt hair in "What's Eating Gilbert Grape" (1993) began to draw significant attention. This period marked the beginning of Johnny Depp long hair. which became a defining feature of his image.
The Iconic Roles: Hair as a Character Element
Edward Scissorhands (1990)
In "Edward Scissorhands," Johnny Depp's character had a wild and mane that complemented his ethereal and misunderstood persona. This role showcased how long hair Johnny Depp could enhance a character's depth and mystery.
Captain Jack Sparrow: The Pirate with Flowing Locks
One of Johnny Depp's iconic roles is Captain Jack Sparrow from the "Pirates of the Caribbean" series. Sparrow's long, dreadlocked hair symbolised his rebellious and unpredictable nature. The character's look, complete with beads and trinkets woven into his hair. was a collaboration between Depp and the film's costume designers. This style became iconic and influenced fashion trends and Halloween costumes worldwide.
Other Memorable Characters
Depp's long hair has also been featured in other roles, such as Ichabod Crane in "Sleepy Hollow" (1999). and Roux in "Chocolat" (2000). In these films, his hair added a layer of authenticity and depth to his characters. proving that Johnny Depp with long hair is more than a style—it's a storytelling tool.
Off-Screen Influenc
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Unique Wedding Bands For Women Who Want To Stand Out.pptx
Introduction to dyeing
1. Introduction to Textile Dyeing
RAJEEV SHARAN
NATIONAL INSTITUTE OF FASHION
TECHNOLOGY
DFT-05
1
2. Basic Textile Terms and Definitions
Dyestuff is organic or inorganic substances
which can absorb light and reflect some lights
to show color. Actually, the dyestuff is water
soluble substances.
Pigment is a substance that can absorb light
and reflect some lights to show color but it is
water insoluble substances. Normally it is
used for printing (with the presence of binder)
or mass-coloration of the synthetic fibers.
2
3. Staining is an unpleasant of dyeing in the
area that we do not want.
Exhaustion of the dyestuff to the fibers is as
follows:
1. Moving of dyestuff from dyebath to
surface of the fiber
2. Adsorption of the dyestuff into the surface
of the fiber
3. Diffusion of the dyestuff into the center of
the fiber
3
4. Classification of Dyestuffs
Dyestuffs can be classified by many methods
as follows:
1. by their ionic (e.g. cationic, anionic and
non-ionic)
2. by their fiber dyeabilities (e.g. on
cellulosic, protein, polyester, polyamide etc.)
3. by their names (e.g. acid, direct, disperse,
reactive, basic etc.)
4. by their chemical structures (e.g. azo,
anthraquinone, stilbene etc.)
5. by their origins (e.g. natural, synthetic)
6. by their colors (e.g. red, green, black etc.) 4
5. Dyeing Processes can be applied in many
stages such as
1. Mass-coloration of the molten fibers
This method is for dyeing the molten
fibers or plastic chips or textile polymers
with pigment dyes. After that, the molten
or polymers will extrude from a spinneret
to form fibers.
Normally, the synthetic fibers are added
with white pigment in order to give a
hiding power (non-see through fabrics).
Advantage: give excellent fastness
Disadvantage: very difficult to clean 5
6. 2. Fiber Dyeing is the method of dyeing
fibers before blending with other colors to
give fancy yarns or fabrics.
Note: This is used for special purposes only.
3. Yarn Dyeing is the method of dyeing yarns
in forms of hanks or packages dyeing. This
will give Scottish’s style fabrics, carpet with
many colors and styles.
Note: This is used in hand loom weaving in
the Northern and North-eastern parts of
Thailand.
6
7. 4. Fabric Dyeing is the method after
weaving, knitting, or non-woven to make
fabrics. This is very popular method of
dyeing as the dyed fabrics will be processed
further to garment industries very easily.
Dyeing forms of the fabric dyeing can be
used in 2 ways:
1. Open width form using the fabrics to
spread without any creases and dye them.
2. Rope form using the fabrics with the
form like a rope (many creases and look
like “a rope”)
7
8. Some people classify into:
1. Exhaustion Process
This method is using lot of water as shown
in “Liquor Ratio (ratio between water and
goods)” This should immerge the goods
into dye solution for a long time in order to
let the dye penetrate into the goods. This
will lead to produce more waste water than
the continuous process.
Advantage: inexpensive, no need to train the
worker to look after and run them properly.
Disadvantage: lots of water needed, very
slow process (60-120 min/batch.) 8
9. 2. Continuous Process
This method is designed by putting different
machinery into a sequence so that it can
produce the dyed fabric in one pass.
Advantage: very fast process (10-100
m/min), small amount of water in the
process.
Disadvantage: very expensive, need to train
the worker to look after and run them
properly.
9
10. 6. Garment Dyeing
This method is the last process of the
dyeing of goods. However, the penetration
of the dye solution may not be completely
passed to the fibers such as between the
seams, buttons, zippers etc. Normally, it is
used for lingerie, socks, sweater dyeing etc.
10
11. Name of Dyestuffs Fibers that can be dyed
Acid Silk, wool, polyamide,
leather
Basic Acrylic
Direct Cellulosic, viscose
Disperse Acetate, triacetate,
polyamide, polyester,
acrylic
Reactive Cellulosic, viscose,
protein
Vat Cellulosic
Sulphur Cellulosic
11
12. Factors that give some choices of the
dyestuffs
1. Cheap
2. Non-toxic
3. Compatible to other dyes and chemicals
4. High color strength
5. Better brightness
6. Better fastness
7. Good levelness on the materials
12
13. Dyes for Cellulosic Fibers
Direct Dyes (Anionic)
They can be dyed directly on cellulosic
fibers. Without the presence of salt, when
the fibers are immerged in water, it will show
anionic charge which repels the dyes.
Adding salt into the dye bath, it will reduce
anionic on the fibers so the dyes can get
closer and adsorb into the fibers.
Advantage: cheap, easily dyed on fibers
Disadvantage: poor wet fastness and some
dyes have poor light fastness. 13
14. Textile Auxiliaries
1. Salt - reduce negative charges on the
fibers
2. Water - dyeing media
3. Fixing Agent - enhance wet fastness but
usually reduce light fastness
Dyeing Conditions (Exhaustion)
dyeing 100oC x 30-90 min
fixing 60oC x 20 min
(Continuous)
pad --> dry --> steam --> wash --> soap -->
14
dry
15. Reactive Dyes (Anionic)
They can be dyed on cellulosic fibers. The
mechanism is nearly the same as described in
Direct dyes.
Advantage: high wet fastness due to covalent
bonding (Chemical Bonding) between fibers
and dyes, easily dyed on fibers
Disadvantage: Expensive
15
16. Dyeing Conditions
1. Continuous Process
1.1 Pad-dry-bake
This is very easy method for cotton or cotton
blends fibers.
1.2 Pad-dry-Pad (Chemical)-Steam
This will give brighter and more intense
color than method 1.1.
1.3 Pad-batch
This will put the goods into the dye solution
and squeeze with 2 rubber rollers to get rid of
excess water and then batch at room
temperature for 1-2 days. 16
17. 2. Exhaustion Process
This method will be used in small factory.
Dyeing conditions will be 40-80oC for 30-90
min depending to the types and structures of
the dyes.
17
18. Textile Auxilaries
1. Salt - reduce negative charges on the
fibers
2. Water - dyeing media
3. Soda Ash - excite the dye to link with the
fibers with covalent bonding. Therefore, it
enhances wet fastness
4. Fixing Agent - enhance wet fastness for
heavy shade but usually reduce light fastness.
18
19. Vat Dye (Anionic when soluble)
The dye is named from the container (Vat)
that used for rotting the dye with alkali
solution. This crucial process will reduce the
dye from insoluble to soluble dye (suitable
for exhaustion in the cellulosic fibers). Now
the manufacturer can synthesize man-made
vat dye.
19
20. Dyeing Process
1. Dissolve dye into water (insoluble dye)
2. Vatting process by reducing the insoluble
dye in alkali condition. (soluble dye)
3. Absorb into fibers (soluble dye)
4. After dyeing, oxidize the dye with
oxidizing agent (insoluble dye)
5. Wash and soap the goods
20
21. Dyeing Conditions
1. Continuous Process
1.1 Pad-dry-Pad (Chemical)
The solution of the dye is prepared without
adding reducing agent to ensure leveling
dyeing. After that, the goods are passed to
chemical bath to reduce the dye into soluble
dye and fix within the goods. Oxidizing
agent is added to the goods and converted to
insoluble dyes.
21
22. 1.2 Pad-oxidize-pad-oxidize (many times)
This will put the goods into the dye solution
and squeeze with 2 rubber rollers to get rid of
excess water, oxidize with the air and then
immerse into the dye solution again and
again to allow the dye penetrate into the
goods.
22
23. Textile Auxilaries
1. Salt - reduce the negative charges on the
fibers
2. Sodium hydroxide - adjust pH to the
dyeing bath and make the suitable conditions
for reducing agent.
3. Sodium hydrosulfite - reducing agent for
the vat dyes.
4. Water - dyeing media
5. Oxidizing agents - (Hydrogen peroxide or
Acetic acid or Air) oxidize the soluble to
insoluble dye
23
24. Sulfur Dye (Anionic when soluble)
The dyeing process has the same process as
described in the vat dye except that using
Sodium sulfide instead of Sodium
hydrosulfide.
24
25. Dyes for Synthetic Fiber
Disperse Dye (polyester, nylon, and acetate)
(non-ionic)
The dye is named from less water soluble
and normally appeared in dispersion in water.
The dye shows no charge due to the groups
presented in the dye molecules.
Dyeing Conditions
Insoluble Less water Water insoluble
dye in soluble in polyester
water fibers
25
26. 1. Exhaustion Process
1.1 At boil with carrier
This process is suitable for acetate fiber and
pale shade polyester fiber dyeing. Carrier is
an auxiliary for swollen fiber in order to
allow more dyes absorbing in. Now the use
of carrier is reduced because it may be a
carcinogen.
1.2 At 130oC without carrier
With the high temperature, the dyes will be
dissolved into smaller molecules and the void
in fiber structure will be opened. This will
give heavy shade. 26
27. 2. Continuous Process
Pad --> Pre-dry (100oC x 30 sec) -->
Thermofixation (180oC x 30 sec) -->
reduction clearing (RC) --> wash --> dry
Printing with Disperse Dyes
With the sublimation property, the dyes can
be printed on paper, place the fabric with a
printed paper and then using an iron with
high temperature pressed on the paper. The
dyes will transfer from paper to polyester
fiber. This is called “Transfer Printing”. 27
28. Textile Auxilaries
1. Dispersing Agent - make the dye solution
stable and disperse in the dye bath.
2. Acid - adjust pH to the suitable condition
for the dye bath.
3. Carrier - swell the fiber and dissolve the
dye to make the dye getting into fiber.
4. Leveling agent - make more leveling
dyeing (some will have adverse effect on
slower dyeing)
5. Water - dyeing media
28
29. Reduction Clearing (R.C.)
After dyeing process, the dyed goods should
be removed excess dyes on the fiber surface.
R.C. will give higher washing and rubbing
fastness of the dyed goods.
Using alkali solution, sodium hydrosulfide
and dispersing agent, the R.C. will be done at
60oC x 20 min.
Note: Do not use more than the
recommended temperature because sodium
hydrosulfide can be decomposed.
29
30. Acid Dye (Anionic)
The dye is called acid because it needs acidic
dyeing condition. It can be dyed on protein
fibers (silk, wool, other animal fibers) and on
polyamide fibers.
Acidic condition will give the fibers showing
positive charge. As the negative charge will
attach directly to positive charge, and
penetrate into the fibers.
Dyeing conditions
100oC x 30-60 min
30
31. Textile Auxiliaries
1. Leveling agent - for levelness dyeing
2. Retarding agent - for inhibiting the dye not
attach to fibers too fast
3. Acid - adjust the dyeing condition and
make the fibers to show positive charges
4. Water - dyeing media
31
32. Basic Dye (Cationic)
The dye shows positive charge. Normally,
the dye can be applied on wool, silk and
polyacrylonitrile (acrylic).
Dyeing Conditions
100oC x 30-60 min
32
33. Textile Auxiliaries
1. Leveling agent - for levelness dyeing
2. Retarding agent - for inhibiting the dye not
attach to fibers too fast
3. Acid - adjust the dyeing condition and
make the fibers to show negative charges
4. Water - dyeing media
33
34. Dyes Dyeing Condition (pH)
Acid (Wool) 2-4, 4-6, 6-8 (depends
on types of dyes)
Acid (Nylon) 4.5-5.5, 6-7 (depends
on types of dyes)
Basic 3.5-4
Direct 7.0
Disperse (Polyester) 5-6
Disperse (Acetate) 6.5-7.0
Disperse (Triacetate) 4.5-6.5
Reactive 7.0 (Exhaustion)
11.0 (Fixing)
34
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