Sulphur Black Dyeing

                         Sulphur Black Dyeing in cotton and polyester
                 cotton blend quality in different Dyeing machine

Sulphur dyeing is used for dyeing of cotton and in market it is available in powder and liquid form also. In exhaust dyeing maximum powder form is used in dyeing of cotton material. In sulphur black dye main advantages it can cover immature cotton available in fabric portion and get lot of fashion shade. Even in Fabric
Dyeing general fashion is there if shade wise any major problem is there convert it sulphur black shade. Here in this article we are going to show the sulphur dye used in different machinery.

Drumming machine:

For garment micro garment quality was used (50% polyester and 50% cotton blend quality) one trail was observed in 50 kg lot.

Quality:-micro garment quality (50% polyester and 50% cotton blend quality)
Quantity:-50 kg M; L:-1/15
M/c used:-Drumming m/c Order:-For local quality.

Process used:

I) Desizing agent (Enzyme) =200 gram Lubricant =500 gram OT =200 gram (Run at 55 degree Celsius, 20 minute holding time.)--------Washing---------

II) Lubricant = 500 gram Sulphur Black =4.500 kg Sodium Sulphide=4.500 kg Common Salt =10 kg Soda ash =700 gram (65-70 degree Celsius, holding time 30 minute)----Washing----

III) Hydrogen peroxide=700 gram Acetic Acid=400 gram (10 minute holding, cold) IV) Bio-polishing:- Bio-SL (Enzyme) =400 gram Lubricant=500 gram Acetic Acid=800 gram (Holding time 30 minute, at 50 degree Celsius)----Washing---washing----unloading for finishing section.

Note: Acetic Acid quantity was taken more because water PH is alkaline coming range 8.0-8.5. From above it was observed three processes was involved .

Desize----sulphur dyeing---oxidation---bio-polishing—washing---washing .

The above lot within 2 hours was taken out. Result was satisfactory for local quality within short time getting result.

Continuous Dyeing machine:

For Cotton Twill quality (Drill quality) Order:-Export Quality.

I) Sulphur Black dye=95 gpl Crypto-anionic wetting agent=2 gpl Antimigrating agent=10 gpl Padding----drying-----Chemical padding

II) Chemical Padding:- Soda ash=20 gpl Sodium Sulphide=95 gpl Padding—steaming—cold wash-oxidation

III) Oxidation:- Potassium dichromate=5 gpl Acetic acid=2 gpl (50-55 Degree Celsius)

IV) Soaping;- Soap=0.5 gpl Soda ash=0.5 gpl (85-90 Degree Celsius)--------hot wash—hot wash—cold wash—drying.

Final process:-

Dye Padding—drying in hot flue drier---chemical padding---steaming—cold wash—oxidation—soaping—hot wash-hot wash –cold wash—drying and batching for finishing.

(For Fabric neutral PH if required slight acetic acid can be taken in last washing tank)

Jigger Dyeing machine:-

For Drill cotton Quality (For 100 kg lot). Order:-Local Quality

I) Sulphur Black dye (Powder) =6-8% Sodium Sulphide=1.5 part of dye quantity. Common salt=10 kg Soda ash=2 kg First Dye-2 Turn (Room Temp) Sodium sulphide=2Turn (Room Temp) +4Turn (Boil) + Common salt=4Turn (Boil) (Salt Addition in two installment) + Soda ash=4Turn (Boil) (Soda Addition in two installment)

II) Oxidation:- Hydrogen Peroxide=2 gpl Acetic acid=1 gpl (50-55 degree Celsius, 4Turn running drain)

III) Soaping:- Soap:-0.5 gpl Soda ash=0.5 gpl (80-85 degree Celsius, 4turn running drain) Hot wash—2Turn---Hot wash=2Turn (Fresh water) ---cold wash—unloaded.

Final process: -

Dye drain---cold wash---oxidation---soaping—hot wash—hot wash—cold wash—Unload.

Soft Flow Machine sulphur black recipe:-

For Knitting Single Jersey Cotton Fabric (GSM=100):- For 150 Kg lot

I) Dyeing Recipe:- Sulphur Dye=14.700 kg Sodium Sulphide=14.700 kg Common salt=7.5 kg Soda ash=1.5 Kg (Dyeing at boil)

II) Oxidation Recipe:- Hydrogen Perioxide:-1 liter Acetic acid:-2.5 Kg (55-60 Degree Celsius)

III) Soaping Soap =0.5 gpl Soda ash=0.5 gpl (Boil)

IV) Hot wash—hot wash—cold wash—hydro exacter—drying.

Final Process:-

Dyeing---cold wash---oxidation—soaping---hot wash---hot wash—cold wash—hydro exactor---drying. (Washing can be increased if color bleeding is observed)

First lab trail has to taken then go for bulk trail. This article has been written in good faith just sharing our experience in production area in different machinery section.