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CONTINUOUS DYEING MACHINE
Prepared by: Danish Raja
Danish_raja1@hotmail.com
Mehran university of engineering and
technology (m.u.e.t) jamshoro
Contents:
• What is dyeing?
• What is continuous dyeing process?
• Types of continuous dyeing machine?
• Manufacturers of continuous dyeing machine?
• Conclusion.
What is dyeing
• Dyeing is the process of imparting
colors to a textile material.
• Dyeing can be done at any stage of
the manufacturing of textile- fiber,
yarn, fabric or a finished textile
product including garments and
apparels.
• The property of color fastness
depends upon two factors- selection
of proper dye according to the textile
material to be dyed and selection of
the method for dyeing the fiber, yarn
or fabric.
Continuous dyeing process
• Continuous dyeing has been found to be
most suitable for woven fabrics.
• The textile substrates are feeded
continuously into a dye range.
• A Continuous dyeing process typically
consists of dye application, dye fixation with
heat or chemicals and finally washing.
TYPES OF CONTINUOUS DYEING
MACHINE
There are mainly three types:
1-Pad-steam process
2-Pad-dry process
3-Thermosol process
1-PAD STEAM PROCESS
• This technique is mainly used for dyeing. It is particularly
suitable for the application of direct, vat, sulphur and
reactive dyestuffs.
• It includes the following steps:
 Impregnation by padding
 Steaming (at about 100 °C)
 Additional impregnation of the fabric with developing
agents (e.g. reducing agents in vat or sulphur dyeing)
 Washing and rinsing.
1-PAD STEAM PROCESS
• In this process, the fabric is
padded with the dye solution
with 60-800C.
• Then fabric is passed through
drying chamber.
• After chamber the fabric is
padded with chemical
(NaOH+Salt).
• Then the fabric is passed
through a chamber at 102 ̊C for
30 sec. Then fabric is washed in
open width washer.
2-PAD DRY PROCESS
 Steps:
• Fabric is first padded in a padder with reactive dye in
presence of an alkali.
• 2-Padded fabric is then passed through a squeezing
roller into a dryer. As a dryer cylinder, stenter etc may
be used. During drying due to higher temperature
fixation of dye in fibre increases and at the same time
water is removed by evaporation.
• 3-After drying fabric is washed in a washing machine
to remove unfixed dye.
2-PAD DRY PROCESS
3-THERMOSOL PROCESS
• Thermosol method is continuous method of
dyeing with disperse dye.
• Here dyeing is performed at high temperature
like 180-220°C in a close vessel.
• Here time of dyeing should be maintained
very carefully to get required shade and to
retain required fabric strength.
3-THERMOSOL PROCESS
1- At first the fabric is padded with dye solution using recipe in a
three bowl padding mangle.
2- Then the fabric is dried at 100°C temperature in dryer.
3- For dyeing, infra red drying method is an ideal method by which
water is evaporated from fabric in vapor form. This eliminates the
migration of dye particles.
4-Then the fabric is passed through thermasol unit where thermo
fixing is done at about 220°C temprature for 60-90 seconds
depending on type of fibre, dye and depth of shade.
5- In thermasol process about 75-90% dye is fixed on fabric.After
thermo fixing the unfixed dyes are washed off along with
thickener and other chemicals by warm water.
6- Then soap wash or reduction cleaning is done if required.
Copyright © 2000 Harcourt, Inc. All rights reserved.
3-THERMOSOL PROCESS
MANUFACTURERS:
• Followings are the manufacturers of the
continuous dyeing machine.
 Benninger;
Shanghai Singularity machines;
China manufacrurers;and
Etc
CONCLUSION
• The continuous dyeing machine can easily dye
any textile matirial with a high speed.
• Its speed can vary between 50 to 250 meters per
minute.
• According to Industry estimates Continuous
dyeing is a popular dyeing method and 60%
textile matirials are dyed.
REFERENCE
• http://textilesite.blogspot.com/2012/03/dyei
ng-process.html
• http://www.fibre2fashion.com/industry-
article/14/1332/some-of-the-process-sequ
ence-with-dyeing
Copyright © 2000 Harcourt, Inc. All rights reserved.
Any Question?

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Continuous dyeing machine

  • 1.
  • 2. CONTINUOUS DYEING MACHINE Prepared by: Danish Raja Danish_raja1@hotmail.com Mehran university of engineering and technology (m.u.e.t) jamshoro
  • 3. Contents: • What is dyeing? • What is continuous dyeing process? • Types of continuous dyeing machine? • Manufacturers of continuous dyeing machine? • Conclusion.
  • 4. What is dyeing • Dyeing is the process of imparting colors to a textile material. • Dyeing can be done at any stage of the manufacturing of textile- fiber, yarn, fabric or a finished textile product including garments and apparels. • The property of color fastness depends upon two factors- selection of proper dye according to the textile material to be dyed and selection of the method for dyeing the fiber, yarn or fabric.
  • 5. Continuous dyeing process • Continuous dyeing has been found to be most suitable for woven fabrics. • The textile substrates are feeded continuously into a dye range. • A Continuous dyeing process typically consists of dye application, dye fixation with heat or chemicals and finally washing.
  • 6. TYPES OF CONTINUOUS DYEING MACHINE There are mainly three types: 1-Pad-steam process 2-Pad-dry process 3-Thermosol process
  • 7. 1-PAD STEAM PROCESS • This technique is mainly used for dyeing. It is particularly suitable for the application of direct, vat, sulphur and reactive dyestuffs. • It includes the following steps:  Impregnation by padding  Steaming (at about 100 °C)  Additional impregnation of the fabric with developing agents (e.g. reducing agents in vat or sulphur dyeing)  Washing and rinsing.
  • 8. 1-PAD STEAM PROCESS • In this process, the fabric is padded with the dye solution with 60-800C. • Then fabric is passed through drying chamber. • After chamber the fabric is padded with chemical (NaOH+Salt). • Then the fabric is passed through a chamber at 102 ̊C for 30 sec. Then fabric is washed in open width washer.
  • 9. 2-PAD DRY PROCESS  Steps: • Fabric is first padded in a padder with reactive dye in presence of an alkali. • 2-Padded fabric is then passed through a squeezing roller into a dryer. As a dryer cylinder, stenter etc may be used. During drying due to higher temperature fixation of dye in fibre increases and at the same time water is removed by evaporation. • 3-After drying fabric is washed in a washing machine to remove unfixed dye.
  • 11. 3-THERMOSOL PROCESS • Thermosol method is continuous method of dyeing with disperse dye. • Here dyeing is performed at high temperature like 180-220°C in a close vessel. • Here time of dyeing should be maintained very carefully to get required shade and to retain required fabric strength.
  • 12. 3-THERMOSOL PROCESS 1- At first the fabric is padded with dye solution using recipe in a three bowl padding mangle. 2- Then the fabric is dried at 100°C temperature in dryer. 3- For dyeing, infra red drying method is an ideal method by which water is evaporated from fabric in vapor form. This eliminates the migration of dye particles. 4-Then the fabric is passed through thermasol unit where thermo fixing is done at about 220°C temprature for 60-90 seconds depending on type of fibre, dye and depth of shade. 5- In thermasol process about 75-90% dye is fixed on fabric.After thermo fixing the unfixed dyes are washed off along with thickener and other chemicals by warm water. 6- Then soap wash or reduction cleaning is done if required.
  • 13. Copyright © 2000 Harcourt, Inc. All rights reserved. 3-THERMOSOL PROCESS
  • 14. MANUFACTURERS: • Followings are the manufacturers of the continuous dyeing machine.  Benninger; Shanghai Singularity machines; China manufacrurers;and Etc
  • 15. CONCLUSION • The continuous dyeing machine can easily dye any textile matirial with a high speed. • Its speed can vary between 50 to 250 meters per minute. • According to Industry estimates Continuous dyeing is a popular dyeing method and 60% textile matirials are dyed.
  • 17. Copyright © 2000 Harcourt, Inc. All rights reserved.