Types of Printing Method, Printing ingredients function

Printing involves the production of a predetermined colored pattern on a fabric, usually with a definite repeat. It can be described as a localized form of dyeing, applying colorant to selected areas of the fabric to build up the design.

Available Printing Types Method:

1. Block Printing
2. Batik Printing
3. Spray Printing
4. Transfer Printing
5. Screen Printing
6. Rubber Printing
7. Laser Printing

Printing ingredients function:

1. 1.     Dye or pigment:

• Ø To provide required color into the design. Example: Reactive, Disperse etc.

  

1. 2.     Solvents:

• Ø To dissolve the chemicals and dyes properly into the water.  Example: Tetra line, Ethylene glycol etc.

1. 3.     Hygroscopic agent:

• Ø For better fixation of color.  Example: Glycerin

1. 4.     Thickener:

• Ø To provide a sharp outline of the printed design and reduce the spreading of color. Example: Starch. CMC

1. 5.     Defoaming agent:

• Ø Reduce foam formation in the print paste.  Example: Silicon (Si)

1. 6.     Oxidizing agent:

• Ø To develop the final color during the printing process. Example: Sodium Bromate (NaBrO₃)

1. 7.     Reducing agent:

• Ø It is used basically during discharge printing.  Example: Sodium bi sulphate (NaHSO₄)

1. 8.     Wetting agent:

• Ø It improves the penetration of the color and gives brighter shade after printing.  Example: Monopol, Turkey red oil etc.

1. 9.     Catalyst:

• Ø It accelerates the reactions during printing of different ingredients and improves the better color formation. Example: Potassium Ferro cyanide.

1. 10.          Acid or Alkali:

• Ø It is used for P^H control. Example: HNO₃ (Nitric Acid), NaOH (Sodium Hydroxide), NH₃OH ( Ammonium Hydroxide)

1. 11.                         Mild- Oxidizing agent:

• Ø It reduces the destruction of dye or color during steaming/ curing. Example: Ludigol, Resist salt L [ Cu(NO₃)₂]