Basic Ingredients of Printing

Last updated on May 1st, 2026 at 01:12 pm

Printing is the process where the print paste is applied on the subjected fabric or garment swatch or whole garment to create printed patterns or designs. In this process, colorful patterns and designs are created that give a new look to the fabric and clothing. It can be done manually or by machine methods.

There are different types of printing techniques, like block printing, screen printing, digital printing, offset litho printing, etc., available. During printing different types of basic ingredients like dyestuffs, thickeners, swelling agents, solvents, etc. are needed. In this article, we will know about the basic ingredients of printing.

The Basic Ingredients of Printing

The basic ingredients of printing are as follows:

• Dyestuffs and pigments
• Thickener
• Acid or alkali or acid-liberating agents
• Carrier or swelling agents
• Solvents or solution acids or dispersing agents or humectants
• Antifoaming agents or de-foaming agents
• Wetting agents
• Catalyst or oxygen carrier
• Oxidizing and reducing agents

Dyestuff and Pigments

Dyes or dyestuff may be defined as colorants in which the coloring substance is dissolved in liquid and is absorbed into the material to which they are put in an application.

Pigments consist of excellent particles of ground coloring matter suspended in liquid, which forms a paint film that bonds to the surface it is applied to.

Thickener

A thickener is a thick mass that imparts stickiness and plasticity to the print paste to be applied on the fabric surface without bleeding or spreading and is capable of maintaining the design outlines. Thickener gives the required viscosity to the printing paste and prevents premature reactions between the chemicals in the print paste.

Acids and alkalis

Acid: Organic acid

Alkali: Sodium and potassium hydroxide, sodium carbonate, potassium carbonate, etc.

These control P^H and fix dye on the fabric.

Carriers and swelling agents

These accelerate the rate of dye penetration by fibre polymer, swell the fibre and reduce crystallinity.

Swelling agents: Resorcinol, phenol, polyethylene glycol etc.

Carrier: Diphenyl

Solvents or solution acids or dispersing agents

This prevents aggregation of the dyestuff molecules in the highly concentrated paste of the dye solution, aids in increasing the solubility of insoluble dyestuff, and increases the prints’ color value, assisting dye penetration and helping to get a bright design. Ex: Diethylene glycol, acetin, urea, glycerine, etc.

De-foaming agents

De-foaming agents prevent the formation of foam during printing. E.g. silicone defoamers, sulphated oil etc.

Wetting agents

Substances that reduce the surface tension of water, thereby allowing it to wet a surface easily, which are otherwise non-wettable, are known as wetting agents or surface-active agents, e.g. TRO, olive oil, castor oil, etc.

Catalyst or oxygen carrier

These prevent fibre damage during steaming and accelerate the final color development by oxidation. E.g., potassium ferrocyanide, copper, sulfide, etc.

Oxidizing and reducing agents

Oxidizing agents develop final colour in steaming or in the subsequent aftertreatment, assist in color fixation, etc., e.g. sodium chlorate, potassium chlorate, sodium nitrite, etc.

Reducing agents destroy the color of the fabric. E.g. sodium hydrosulfite, stannous chloride, etc.