What is remazol dye?

Remazols are reactive dyes suitable for dyebath, printing and painting on Cotton, Rayon and other regenerated cellulose materials. Best results are achieved in a dyebath at 40-60⁰C. They may be used cold but much better colour yield is obtained at this temperature.

What is discharge dyeing?

Discharge dyeing is basically removing (i.e. discharging) dye from already dyed fabric to get your look/pattern, rather than the other way around.

What are the 4 types of textile dyeing?

TYPES OF DYEING AND PRINTING WITH THEIR INOVATIONS

  • DYEING. Dyeing is the application of dyes or pigments on textile materials such as fibers, yarns, and fabrics with the goal of achieving color with desired colorfastness.
  • Reactive dye:
  • Disperse Dye.
  • Direct Dye.
  • Basic dye.
  • Acid dye.
  • Sulphur dye.
  • Vat dye.

Which reactive dye is used for printing?

Reactive dyes are designed to react with hydroxyl groups in cellulose at alkaline pH to form a covalent bond leading to high wet fastness. The breakthrough in printing came with the introduction of the mono chloro triazine (MCT) dyes.

What is fiber reactive dye and how does it work?

Fiber reactive dyes attach permanently to cellulose fibers using a covalent (electron-sharing) bond. These molecules carry a “chromophore” which absorb varying spectrums of the light, allowing only certain spectrums to reflect. Covalent bonding is the one of the most basic and strongest types of chemical reactions.

What is reactive dye in textile?

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 is color discharge printing?

discharge printing, also called Extract Printing, method of applying a design to dyed fabric by printing a colour-destroying agent, such as chlorine or hydrosulfite, to bleach out a white or light pattern on the darker coloured ground.

What are the types of discharge printing?

Discharge style of printing is done using sodium hydrosulphite, stannous chloride and zinc sulphox-ylate formaldehyde as discharging agent on reactive dyed cotton fabric. With sodium hydrosulphite as a discharging agent, excellent colour fastness to rubbing in both dry and wet conditions is achieved.

What is textile dyeing and printing?

Dyeing and printing are processes employed in the conversion of raw textile fibres into finished goods that add much to the appearance of textile fabrics.

What are the 3 types of dyes?

Synthetic Dye. All the dyes that are derived from organic and inorganic chemical compounds are synthetic dyes.

  • Direct Dye. These dyes are applied to the fabric by preparing an aqueous solution and submerging the fabric in it.
  • Disperse Dye.
  • Reactive Dye.

    • What is discharge print?

    Which dyes are used in printing?

    Pigment dyes are mainly used for printing and are given utmost importance. All these dyes are fixed to the fiber by means of resins that are very resistant to laundering and dry cleaning. Vat and reactive dyes are generally used for cotton prints.

    What are some advantages of fiber reactive dyes?

    Fiber Reactive Dyes Advantages: Greater than 90% of the dyestuffs are reacted onto the cellulose fibers, meaning less dyestuffs are washed down the drain as waste. Bonds with the fiber, thus creating a more permanent color. Good wet fastness with minimal bleeding adjacent to other non-cellulosic fibers.

    What are the properties of reactive dyes?

    Reactive Dyes Properties

    • Reactive dyes come in all shades.
    • Powder, print-paste, and liquid are the different forms.
    • Good Water solubility.
    • Resistant to degradation caused by Ultra Violet rays.
    • Good light and wash fastness.

    What is vat dye in textile?

    vat dye, any of a large class of water-insoluble dyes, such as indigo and the anthraquinone derivatives, that are used particularly on cellulosic fibres. The dye is applied in a soluble, reduced form to impregnate the fibre and then oxidized in the fibre back to its original insoluble form.

    What is Sulphur dye in textile?

    Sulfur dyes are the most commonly used dyes manufactured for cotton in terms of volume. They are inexpensive, generally have good wash-fastness, and are easy to apply. Sulfur dyes are predominantly black, brown, and dark blue.

    What type of print is discharge print?

    Discharge printing is the process of using water-based inks to bleach the manufacturer’s dye out of a shirt and replacing it with whatever dye color you choose. This kind of discharge screen printing is done with water-based inks that soak into the fabric, instead of just sitting on top of it.

    How will you identify discharge printed fabric?

    A fabric is said to be of discharge print only if the background colour is same on face and back of the fabric, and the print design area is of white (or) different colour or shade than the background, motifs of discharge prints may range from simple Polka dots to very intricate patterns.

    What dye is used for discharge printing?

    What is printing in dye?

    Dyeing is the process by which textile material is changed physically and chemically and finally looks like colored materials. Printing means partial or localized dyeing. It can be described as the controlled placing of defined areas of color onto a substrate.

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