Textile Printing The word of “printing” has derived from a Latin word which means “pressing “. It implies a process that uses pressure. Textile printing is one kind of localized dyeing where dyes or pigments & chemical applied by any method which can produce a particular effect of color on fabric according to design. In […]
Home Wet Processing Eng.
Wet Processing Eng.
REACTIVE DYE Reactive dye is only dye that reacts with the textile fibre & makes covalent bond with fibre.Under the suitable condition it reacts with –OH or –NH2 of the fibre & forms covalent dye substrate linkage. DYE-SO2-CH2-OSO3Na + HO-Cell ———- D-SO2-CH2-CH2-O-Cell + NaHSO3 FEATURES of REACTIVE DYE 1. Water soluble. […]
Zahirul Islam BUTEX
Dyestuff: Dyestuffs are organic and inorganic substances which consists of chromophore groups, can change the physical and chemical properties of any substance , can absorb light and reflect lights to show color. They are unsaturated complex compound. Characteristics of dyestuff : It must contain chromophore group Chromophore group can be different types like -NO2,-NH2,-CO-,-N=O. […]
Md Sohanur Rahman Sobuj
Man-made fibers are manufactured by spinning the polymer. There are three major types of spinning process. They are- █ Melt Spinning (It is used for polymers that can be melted easily.) █ Dry Spinning (It involves dissolving the polymer into a solution that can be evaporated.) █ Wet Spinning (It is used when the solvent can’t be evaporated and must be removed by chemical means.)