A case study


Reactive dye used in exhaust dyeing method can be make price effective with pigment topping but a maximum range upto 10% range in garment cottonknitted fabric.


Otherwise collar to body portion difference will be observedmore but according to customer demand it has to done cost wise economical also.


In garment more dye addition in reactive dyeing patchinesschances will be more whatever shade is coming first time its tone can beadjusted with pigment topping within short time.


If we are increasing the percentage we have to see the finalfinishing effect because shade should not become duller.


We have taken one shade trail with reactive and pigmentdyeing as trail its result was found satisfactory. In this shade 90% reactivedyeing and 10% pigment dyeing was done.


Trail Lot


Quality: - popcorn (100% cotton knitted quality) garment

Quantity:-160 kg

M/c Used:-Drumming M/C (Rensom Manufacture)

Place:-Tripur

Shade:-Khakhi

Total liquor:-2400 litre.


% Recipe:-


Corazol Yellow RFT (Colourtex)=0.66% owf.

Corazol Red RFT (Colourtex)=0.143 % owf

Corazol Blue RFT (Colourtex) =0.128%owf.

Vaccum salt=60 gpl

Soda ash=15 gpl


Pigment Recipe:-In 2400 litre water


Pigment CT Black (Local) =150 gram

Pigment Yellow 4631(Local) =40 gram

Pigment Red 4318(Local) =40 gram

(60 Degree celcius, 30 minute)

Binder =3.5 Kgs


Process used:


Wetting agent treatment=0.5% owf (60 degree celcius,30minute) ---Acetic acid=1%owf(cold,15 minute)----Reactive dyeing done (Dyesaltsodaexhaust process) ---- cold wash --- Acetic acid (Neutralization)----Cationzation---pigmentdyeing (Exhaust)Bio-polishing --- cold wash softner---coldwashHydroexactor----tumble drier---ready for garment trimming and finalfinishing section.

Note:


In garment dyeing garment was opened in such a manner insideportion will be top side if any stain chances during pigment dyeing also insideportion nothing will happen.

Result:

Result was encouraging and it is smoothly running specially for thiskhakhi shade .


Conclusion:


First take lab trail then go for bulk trail.


This article has been written in good faith for problem solving altitude purpose.


About the Author:


The author is the Product Manager (Reactive Dyes) in Colourtex.Ind. Ltd having 12 years production experience in cotton, polyester and itsblend quality in India and overseas reputed company.


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