What is reactive digital printing?

What is reactive digital printing?

Reactive dyes are printed using an inkjet onto a pre-treated fabric. The dye, pre-treatment and steam cause a chemical reaction that forms a covalent bond, infusing the colour into the fibre. The fabric is then washed to remove the excess dye and pre-treatment, resulting in a vibrant, long-lasting print.

What is the difference between pigment and reactive printing?

In pigment printing only one side is fully printed the other side just may have a little impression but not have the same printing design. In reactive printing method fabric has the same printing on the both sides as the dye particles in the print paste make a bond with the fiber.

What does reactive ink mean?

Reactive inks derive their name from the fact that the dye reacts with the chemicals in the printing paste in conventional printing. When the textiles are being steamed, this chemical reaction makes sure that the color molecules are bonded to the fiber.

What are the four methods of printing?

There are four main categories of printmaking relief, intaglio, lithography, and screenprinting.

Why steaming is necessary for reactive printing?

… Since water condensed on the cotton fabric during steaming contributes to expansion of the fiber and dissolution of reactive dye (Wang et al., 2017), and the steaming procedure also provides the thermal energy needed for the reactive dyes to form covalent bonds with the fiber (Yang and Naarani, 2004) , steaming of …

What is a pigment print?

Pigment prints are made using, you guessed it, pigment based inks. And, they are one of the cheapest and most common types of prints in the textile market. Pigments prints are a type of direct print. A direct print, aka application print, is a category of print where the design prints directly onto the fabric.

What is procion printing?

Procion MX dyes are suitable for printing on cotton, linen and viscose rayon. They have excellent colour fastness, provided they are set using soda ash. The results are less vibrant when used on silk fabric and we recommend you use Acid dyes, see our printing with Acid dyes page.

What is reactive dyeing method?

Reactive dye is the dye that can react with a fibre to form a covalent link, that is forming a permanent attachment in the fibre and could not be removed by repeated treatment with boiling water under neutral conditions. Consequently, the dyes become parts of the fibre, leading to outstanding colour fastness to wash.

What are the 5 printing processes?

The main industrial printing processes are:

• Offset Printing.
• Lithography.
• Digital Printing.
• Gravure.
• Screen Printing.
• Flexography.

Why Sodium bicarbonate is used in reactive printing?

Unlike pigments, most dyes are substantive to fibers if the chemistry used in the coloration method is correct. Reactive dye printing chemistry requires an alkali, such as sodium bicarbonate, as the fixing agent to establish the molecular bonds between the dyes and the fibers.

Why boiler is used in textile industry?

Much like dyeing, the printing process utilizes several different methods, depending on the fabric type and the finished product. However, steam is one of the more common methods used in textile printing. Boilers help provide the specific settings of heat and moisture required to perform printing on many fabric types.

How is reactive dye printing used in printing?

Introduction Reactive dye printing is a method of printing a dye or wax by using mixes thereof to create colors. With a binder and a heat-activated printing additive images can be permanently bonded to the substrate. These reactions are generally heat-activated. 4.

How does a fabric react to the printing process?

All of our fabrics receive a custom treatment before the printing process. Think of it as a fabric spa. This treatment involves each fabric being washed in a specially formulated liquid bath. This liquid is unique to each fabric type and is what eventually reacts with the dyes to achieve permanent printing results.

What is the fixation process for reactive dye?

Fixation processes, which cure reactive dyes to the fabrics, generally include steaming the printed fabric with highly saturated steam followed by washing in hot water to remove the thickening agent and excess dye particles.

Which is more environment friendly reactive dye or pigment ink?

Reactive dyes are more environment friendly as all bounding chemicals are applied direct on fabrics during fabrics pre-treatment process. Despite all good qualities, reactive dyes are more difficult to process. After printing, fabrics should go through hot steam fixation and extensive washing processes.