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8/10/2019 Sinte Dyeing

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BAHIR DAR UNIVERSITY FACULITY OF ENGINEERIN

EITEX

Seminar On : Textile Dyeing Machine

BY:

SINTAYEHU TEDESSE

COURCE MANAGER: Prof.Dr.S.Kathirrvelu


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Scope of Presentation

INTRODUCTIONFIBERS DYEING MACHINEYARNS DYEING MACHINEFABRICS DYEING MACHINE

GARMENTS DYEING MACHINE

CONCLUSION

REFERENCES


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Textile dyeing:

Dyeingis the process of adding color to textile products like fiberfabric.

Dyeing machine:

the machine which is used to dyeing or coloring of materialsgarment or any other materials is called dyeing machine.

Dyeing machines come in all shapes and sizes to accommodate and quantities of textile materials.


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Materials Dyed

Fibers

Stock dyeing

Flock dyeing

Yarns

Skein dyeing

Package dyeing

Beam dyeing

FabricsPiece dyeing

(woven, knitted a

cloths)

Garments - G

dyeing


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Fiber dyeing machine Yarn dyeing machi

Knit dyeing machine Woven dyeing ma


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DYEING MACHINES FOR LOOSE FIBRE

The goods hold in a co

perforated inward sloping si

The fibers are gradually p

pan,

The top plate prevents th

from flooding the top of the

the pan fits onto a central

dye solution from the pum

of the fibre mass.

The entire pan or cage s

container, also with a closed


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MACHINES FOR DYEING YARN

Hank dyeing machine

Features :

Machine is suitable for 98 c temperature

Automatic reversal device for the control of the flow direction

All oxidation outlets are provided with valves and dosing pump

Machine is suitable for vat dyeing and is provided with dye add


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Package dyeing machines

Cont..

Cones Cylindrical packages Cheeses


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Cont..

The cone or cheese obtained f

wound on to perforated cone haBASIC FEATURES OF YARN DYEING M

CREEL

OVERHEAD CRAIN

PRESSURE WASHER

CONES

CIRCULATION PUMP

REVERSAL FLOW

HEAT EXCHANGER

SERVICE TANK

CONTROL PANEL


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Cont..

Vertical dyeing machine

C


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Cont..


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Beam dyeing machine

HT Beam Dye

The perforated beam is initially wrapped with a non-absorbent n

fabric before winding. This acts as a solution disperser and filter.

types of package, the uniform winding of the yarn onto

prerequisite for successful level dyeing.


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MACHINES FOR DYEING FABRIC

Knit Dyeing Machine

Winch dyeing machine

Winch machine doesnt have liquor

circulation mechanism.

Work with high liquor ratio from 1:20-

1:30.

Dye penetration is not assisted by

nozzle pressure, Work relatively at lower temperature

and pressure.

Utilize much energy, chemical and

water.

Have a feature to directly to add

chemicals to the machine.


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Winch dyeing machine

Construction and operation if winch is

very simple.

The winch dyeing machines are

suitable for types of wet processing

operation from desizing to softening.

The tension exerted on winch is less

than jigger.

The appearance of the dyed goods is

clean and smooth on winch dyeing

machine.

Batch dyeing operati

sewing, opening out

and unloading fo

separately.

Since several length

over the winch reel

sewn end to end,

processing is not po

batch.

Fabric is processed i

lead to create mar

heavy, woven thin an

Most of the mach

atmospheric conditio

Advantage of Winch

Limitation of


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Knit Dyeing Machine

jet dyeing machine

Machine came into existence with a purpose to minimidrawback of earlier machines like winch, jigger and beaunits


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jet dyeing machine

AdvantagesDyeing time is short compare to beam

dyeing

Production is high compare to beam dyeing

machine

Low consumption of water

Can be easily operated at high temperature

and pressure.

Comparatively low LRs, typically b/n 1:4 and

1:20

Fabrics are handle carefully and gently.

Disadvantagesdyed in rope form so ther

entanglement

Equipment and maintena

Chance for crease format

Foaming can be a problem


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MAIN PART

Dyeing tank

Auto clave

Drain valve

Heat exchanger

Reserve tank

Nozzle

Steam pipe

Winch roller


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jet dyeing machine

1. dyestuffs & auxiliariesfeeding container

5. Dyeing drum

2. heat exchanger

3. Pump for the circulation

of the liquor

4. High pressure pipework

6. winch roller


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Schematic diagram of jet dyeing mac


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jet dyeing machine

Types of Jet Dyeing machine

Overflow dyeing machine

Soft flow dyeing machine

Airflow dyeing machine


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Development in jet dyeing

1. Soft flow-slow motion of fabric. Suitable for knitted

2. Super jet dyeing machine MLR 1:1

3. Aerodynamics jet dyeing machine.

Jet created by mixture of air + water

4. Multi nozzle soft flow jet dyeing machine


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Limitation jet dyeing machine

High initial investment and maintenance cost

Limited accessibility during the dyeing process.

Foam forming substance are to be avoided.

Any roughness of the inside surface cause damage to

In case of cloth breakage, rethreading is complicated.


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Woven Dyeing Machinery

Jigger Dyeing Machines

Feature

Atmospheric (upto98oC)

Economical dyeing and loratio

Fabric tension 50-800N Fabric speed max 10-150

Fabric width max 5400m

Roller width max 5600m

Figure this jigger


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Jigger dyeing machine

An efficient dyeing techniques.

It is also known by the name of jigger. The open-width fabric passes from one

roller

through the dyebath at the bottom ofthe machine and then onto a driventake-up

roller on the other side. When all thefabric has passed through the bath, the

direction is reversed (Figure 12.4). Eachpassage is called an end. Dyeing always

involves an even number of ends.


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Semi Continuous Dyeing Machin

Pad batch dyeing machine

It is one fo the widely used techniques

It is mainly used in the dyeing of cellulosic fiber like cviscose(woven) with reactive dyes.

The characteriticss of this machine is simple and flexisubstantial reduction in capital investment for equipm


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Semi Continuous Dyeing Machine

Pad jig

process Pad rol

This process is generally used as adyeing technique.

In this process the fabric passesthrough a padding machine whereit is impregnated with the dyeingbath, then the dyestuff is fixed on a

jigger.

Sometimes the fabric can be dried

in a hot-flue drier after padding,before entering the jigger.

The application of the dyestuff bypadding allows for homogeneousdyeing and time saving whencompared to traditional jiggerdyeing processes.

This process is sim

batch, but in thfabric, after paddthrough an infrare

It is then rolled slow rotation in achamber until fixa


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Special feature of pad dyeing proce

Significant cost and reduction as compared conventional dyeing process.

Excellent wet fastness properties

A uniform dyeing quality is achieved with even color aand color fastness.

As compare to rope dyeing, pad batch dyeing produlower defect levels.

In pad batch dyeing, quality like high shade reliarepeatability are common. This is because of high reawith rapid fixation rate and stability.


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Continuous dyeing has been found to most suitable

fabric.

The textile substrates are feud continuously i

range.

There are mainly three types:

Pad-steam process

Pad-dry process

Thermosol process

Continuous dyeing processes


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Continuous dyeing processes

Continuous dyeing processes can be divided into four stages:

1. dye application by padding

2. dye fixation, usually in hot air or steam

3. washing-off of unfixed dye and auxiliary chemicals

4. drying, usually on steam-heated cylinders


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1. Pad steam process

This techniques is mainly used for dyeing. It is particularly su

application of direct, vat, sulpher and reactive dyestuffs.

the fabric is padded with the dye solution with 60-80oC

Then fabric is passed through drying chamber.

After chamber the fabric is padded with (NaOH+salt)

Then the fabric is passed through a chamber at 102oC for 30sec.

washed in open width washer.


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2. Pad dry process

Fabric is first padded in a

padder .

Padded fabric then passed

through a squeezing roller into a

dryer. As a dryer cylinder,

stenter etc.

After drying fabric is washed in

a washing machine to remove

unfixed dye.


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3. Thermosol process

Thermosol method is continuous method of dyeing with

dye. Here dyeing is performed at high temperature like 180-2

close vessel.

Here time of dyeing should be maintained very carefully

required shade and to retain required fabric strength.


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Garment dyeing machine

Unlike fabric dyeing machines where rollers and jets are e

transporting the fabric through out the machine and liquor.

Garment dyeing machine require special arrangements to mo

through the liquor continuously.

Garment Dyeing Machines Paddle and rotary drum machines.

Rotary drum machines are sometimes preferred for garments.

require gentler handling, such as sweaters.

A high liquor ratio is required for paddle machines, which is les

economical and may limit shade reproducibility.


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Types of Garment dyeing machine

Rotary

Paddle


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Garment dyeing machine and their prin

Type of construction Types of liquor and garment mo

Paddling machine Mechanical arrangement like pad

drum.

Drum machine Hydrodynamically by adjustable j

Washing centrifugal

machines

Hydrodynamic circulating dyeing

machines with so called floating

circulation principle.

Jet dyeing centrifugal

machines

Jets are used.


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Conclusion

The textile dyeing machineries havdeveloped in a variety way to dyeing thsubstrates like that of fiber, yarn, fagarment. The development of these mare bring the sector become leading in t

among other industry. Also machine more automated, thereby reduce labohas some drawback for the decountries.


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Reference

www.slideshare.com

www.taxtilelearner.com

www.textilefshion2.com

www.educationacadamia.com

Arthur, D Broadbent (2001) Basic PrinciplTextile Coloration Society of Dyers and Co
http://www.slideshare.com/http://www.taxtilelearner.com/http://www.textilefshion2.com/http://www.educationacadamia.com/http://www.educationacadamia.com/http://www.textilefshion2.com/http://www.taxtilelearner.com/http://www.slideshare.com/


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Thank You

Very

Much!!

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