ENGR MD ROWSHON ALI

Dyeing Dyeing is a method which imparts beauty to the textile by applying various colors and their shades on to a fabric. Dyeing can be done at any stage of the manufacturing of textile- fiber, yarn, fabric or a finished textile product including garments and apparels. The property of color fastness depends upon two factors- selection of proper dye according to the textile material to be dyed and selection of the method for dyeing the fiber, yarn or fabric. Dyes Dyes are used for coloring the fabrics. Dyes are molecules which absorb and reflect light at specific wavelengths to give human eyes the sense of color. There are two major types of dyes – natural and synthetic dyes. The natural dyes are extracted from natural substances such as plants, animals, or minerals. Synthetic dyes are made in a laboratory. Chemicals are synthesized for making synthetic dyes. Some of the synthetic dyes contain metals too. Natural Dyes It is the most common approach to apply a color pat...

Dyeing Methods | Methods of Dyeing | Chain Dyeing | Cross Dyeing | Stock dyeing | Top dyeing | Yarn dyeing | Bale Dyeing | Batik Dyeing | Skein (Hank) Dyeing | Package Dyeing | Warp-beam Dyeing | Space Dyeing | Piece Dyeing | Beck dyeing | Jig dyeing | Pad dyeing | Jet dyeing | Solution pigmenting or dope dyeing | Garment dyeing | Random Dyeing Dyeing Methods Color is applied to fabric by different methods and at different stages of the  textile manufacturing process . The process of applying color to fiber stock, yarn or fabric is called dyeing." There may or may not be thorough penetration of the colorant into the fibers or yarns. Dyes can be used on vegetable, animal or man made fibers only if they have affinity to them. Textile dyes include acid dyes, used mainly for dyeing wool, silk and nylon and direct or substantive dyes, which have a strong affinity for cellulose fibers. Mordant dyes require the addition of chemical substances, such as salts to give them an affini...

Textile wet processing: In which way grey fabric is dyed is called wet process technology. Normally wet processing depends on buyer's demand. Suppose your buyer wants the more precised dyed fabric; so in this fact you should mercerize your fabric during the dyeing pre-treatment process. Basically if the buyer don’t want that so called particular fabric there is no need to mercerize your fabric. Flow Chart of Textile Wet Process Technology Grey Fabric Inspection ↓ Sewing or Stitching ↓ Brushing ↓ Croping ↓ Singeing ↓ Desizing ↓ Scouring ↓ Bleaching ↓ Mercerizing ↓ Dyeing ↓ Printing ↓ Finishing ↓ Final Inspection ↓ Delivery All above process are described briefly: Grey Fabric Inspection: After manufacturing fabric it is inspected in an inspection Table. It is the process to remove neps, warp end breakage, weft end breakage, hole spot. Stitching: To increase the length of the fabric for making suitable for processing is called stitching. It is...