Introduction of wet processing for woven fabric

Flow chart of wet processing for woven fabric:

                                                  Grey fabric inspection

                                                    Brushing & Shearing

                                                 

                                                          Singeing

                                                             Desizing

                                                            Scouring

                                                            Bleaching

            

                                                          Mercerizing

 

                                            Dyeing                   Printing

                                                                               

                                                                       Finishing

Wet processing: The process where textile materials or goods are treated with water, chemical and dyes tuffs by wetting.

Brushing: The straightening of projecting or protruding fibers & thread ends from fabric surface is called Brushing.

Shearing: to shear

Singeing: To eliminate the fiber or thread ends, knots from the fabric surface by gas burner or electric heater.

-To remove the short fiber ends.

-To remove the threads ends or short fiber.

-To make the fabric surface smooth.

-To reduce the development of hairness and pilling during further processing

De-Sizing: De-Sizing is done in order to remove the sizing materials from the warp yarn of the woven fabric.

-To remove the starch materials from the fabric.

-To increase absorbency power.

-To increase the affinity of the fabric to the dye chemicals.

-To make the fabric suitable for the next process.

-To increase the luster of the fabric for dyeing & printing.

Scouring: The process moving natural (oil, wax, fats, gum etc ) as well as added impurities (during fabrication process) to produce hydrophilic & clean textile materials is called scouring.

-To make the fabric highly hydrophilic.

-To produce clean materials.

-To remove the impurities from the textile materials.

Bleaching: To remove destruct natural coloring matters by using oxidizing/reducing agent for the whiteness of fabric.

-light, increasing absorbency, increase dye affinity of fabric, softness.

-To increase the dye affinity

-To accelerate the next dyeing process.

Mercerization: The treatment of cotton / cellulose based fabric with strong alkali (NaOH,KOH) under tension to increase the strength, luster & absorbency of fabric is called Mercerization.

Note: Cellulose based textile materials are treated by alkali media in wet processing.

           Protein based textile materials are treated by acid media.

Because of their OH group.

Dyeing: The process by which a textile materials is to be changed physically or chemically so that it looks mono uniform colored is called dyeing.

-To textile goods or materials are dyes uniformity with single color.

-To increase the attractiveness of fabric /textile materials.

-To make the fabric/textile materials suitable for various uses.

-To make the fabric/textile materials suitable for decorative purpose.

Dye: Dye is a complex compound which is applied in the textile materials represented to color & contains chorophore & ouxochrome group in its chemical structure.

Printing: The process in which different types of colors are used to make a particular design on the textile goods is called printing.

After printing process steaming & curing process will apply on fabric.