VAT Dyes

Vat Dye is particularly suitable for the dyeing of cellulosic fibers. but it can be applied equally well for other textiles such as Viscose, Rayon, Jute, Linen, and Natural silk with certain modifications of the dyeing process.

Vat Dye is supplied by us in various forms to suit the intended mode of application. These vat dyes differ in tinctorial strength and fineness of dispersion. Powder, Ultra concentration and Acra concentration contain finely dispersed vat dyes, recommended for leuco vat dyeing. The colour of reduced vat dyes differs among different dyestuffs and is characteristic of the dyestuff from which it is produced.

Vat Micro Disperse

We are a key manufacturer of micro disperse vat dyes that find unique applications in the textile industry. With our quality dyestuffs, we meet your requirements for yarn dyeing, micro disperses printing and continuous dyeing, etc. They have good all-around fastness properties when used for cellulosic fabrics. Also, we keep up with an excellent variety, reasonable prices, and the latest industry standards. Developed to be effective, safe, and productive in nature, these dyes are also easy to use in coloring works.

Vat Powderfine Dyes

Vat Powderfine Dyes are employed wherever shades of the highest fastness properties are required. It is particularly suitable for the dyeing of cellulosic fibers. But it can be applied equally well for other textiles such as Viscose, Rayon, Jute, Linen, and Natural silk with certain modifications of the dyeing process.

VAT Paste

This Pattern Card illustrates the range of Vat Dyestuff Indigoid & Anthraquinonoid Vats in Micro dispersed (MD) paste form suitable for textile printing on cellulosic fabric like cotton, Rayon viscose staple, cuprammonium Rayon, etc. & also discharge print on dischargeable dyed cellulosic fabrics The particle of dyestuff in this range have been brought down to extremely small size & they have been transformed into a fine dispersion with the help of most modern techniques giving considerable stability and uniformity to the paste and facilities easy fixation of dyestuffs even under the varying condition of steaming. Arlovat (MD) Vat Paste has excellent brightness, dispersion, and all fastness properties and covers a complete range of colors from Yellow to Black.

1. PREPARATION OF STOCK PASTE

150 Gms Rangolite C Powder
120 Gms Potassium Carbonate
50 Gms Glycerin
680 Gms Thickener
==== 1000 Gms

For Black BG Paste Extra addition of Potassium carbonate (5%) & Rangolite C (5%) is recommended.

2. THICKENER

Indalca AGBV 3% or UBV (3%) British Gum (3%) and maize starch (6%) are cooked together till transparent mass is obtained and cooled to room temperature. Adjust the viscosity as per requirement.

3. PREPARATION OF PRINTING PASTE (5% SHADE)

50 Gms. Arlovat (MD) Paste 50 Gms. Water 900 Gms. Stock Paste ===== 1000 Gms

Fixation of color is improved if printing paste are kept overnight before us.

4. STRAINING

Printing paste prepared above is filtered through a fine cloth before printing in order to remove hard particles from the Paste

5. DRYING AND STEAMING

Printed cloth should be dried well at 50° - 55° C. Steaming is carried out continuously in a Rapid ager for 10-12 mins or in Star ager (20-25 min) with moist steam at 101° C – 103° C (under pressure) and in absence of air .

6. OXIDATION

The steamed fabric is oxidized to convert Leuco compound formed during steaming into insoluble VAT color which is fixed on the fabric.

The Steamed fabric is oxidized by treating in a bath containing

2-3 gm/lit Sodium perbor ate OR 2-3 gm/lit Hydrogen per oxide with 0.5-1 CC/lit Glacial Acetic Acid at 40° – 45° C temp for 5-10 min. to keep the steamed before chemical oxidation

7. SOAPING

After Oxidation fabrics are rinsed well and soaped at boil with 3 gm/lit.Soap & 2 gm/lit.Soda Ash. For viscous fabric soaping is carried out at 80°C. Wash & dry for getting brilliant & excellent shades of Arlovat Micro Dispersed Paste.

8. IMPORTANT POINTS (TO BE FOLLOWED)

Following points of useful information are given in connection of Vat Paste.

For best results scouring and bleaching of fabrics is important
Straining of printing paste is necessary to avoid the damage of screen of prints.
For better results printing paste should be kept overnight
For best results scouring and bleaching of fabrics is important
Larger quantity of Rangolite C & Potassium carbonate may be needed for discharge printing
Use anthraquinone for color discharge which is difficult to discharge.
Printed cloth should be dried at 50° – 60° C.otherwise Rangolite C will be decomposed & shade will become lighter
Dried Printing cloth should not be kept for larger time in open air
Steaming is very important for this process so temperature & pressure must be maintained properly .