October 19, 2009

Package Dyeing of Unmercerised Cotton yarn with High Exhaust Reactive Dyes














· Start Dyeing @50°C; ensure the starting bath pH be 6; adjust with Acetic Acid if necessary.

· Add salt (vacuum or Glauber’s salt) and hold for 15 minutes

· Add ½ the volume of dissolved and filtered dyestuff and hold 10 minutes.

· Add ½ the volume of dissolved and filtered dyestuff and hold 10 minutes.

· Raise the temperature @2°C/minute to 80°C and hold for 20 minutes.

· Add ½ alkali (Soda ash) and hold 25 minutes.

· Add ½ alkali (Soda ash) and hold for 30 minutes.

· Check sample

· Drain

· Cold wash (10 + 10 minutes)

· Neutralize @ 40°C with adequate qty of Acetic acid.

· Cold wash – 10 minutes

· Hot Wash @ 70°C (2°C/minute) – 10 minutes

· Soap @ 95°C – 15 minutes (1st soap)

· Soap @ 95°C – 15 minutes (2nd soap)

· Soap @ 95°C – 15 minutes (3rd soap)

· Hot Wash

· Sample check for shade and wash fastness

· Cold wash (10 + 10) minutes

· Acid wash with 1 gpl of acetic acid

· In the same acid bath – cationic softener treatment – 20 minutes

· Check pH – 6

· Unload.


46 comments:

confused dude said...

Hello...

great site... really informative...

im planning to put up a cone dying unit... would like get in touch with you and discuss a lot & use your knowledge for the same...

pls mail me on luvly.krissy@gmail.com

thanx!
Krishna.

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Maruf_Ahsan said...

Hi!!

I m from bangladesh; Planning to set up a cone dyeing project within next 6 months. I saw your advise want to share my current idea and m/c setup plan for a feasible project. I m planning to start with 10 ton project at first and qouted rf dryer and as back up planning to take a steam cabinate dryer. pls advise me on 1maruf@gmail.com thanks , M Ahsan

Gulfam said...

Good informative site...
But i don't know why three hot wahes are required at 95c for 15mnts in HE dyes i think single wash is enough..

Gulfam said...

please keep me in touch with new informations regarding yarn dyeing at...
gullfm@gmail.com

Swords said...

Absolutely fantastic Yarn Dyeing Post! Lots of great information and inspiration, both of which we all need!Thank you for another great article. Where else could anyone get that kind of information in such a perfect way of writing?

Gexton said...

We are producing 100% cotton yarn of several counts ranging from 10/s up to 40/s for knitting and weaving.
cotton yarn from Pakistan
cotton carded yarn exporter in Pakistan

Zubi Majeed said...

Thanks! This article is really informative.Relevant tips and techniques provided to increase the knowledge about the subject. Good job :)