Textile Mirror

Dyestuff: Dyestuff is organic or inorganic substances which can absorb light and reflect some lights to show color.  Actually, the dyestuff is water soluble substances. Pigment : Pigment is a substance that can absorb light and reflect some lights to show color but it is water insoluble substances.  Normally it is used for printing (with the presence of binder) or mass-coloration of the synthetic fibers.

Dyes are the colouring material that colour commodities of our day to day use. Hardly there is any industry where dyes are not used commercially. From Plastic toys for children to that jazzy t-shirt of yours, every where there is application of dyes. The page tries to give a comprehensive knowledge about the dyes, its sources and the various types that are used successfully.

WHAT ARE ENZYMES? The enzymes are large protein molecules made up of long chain amino acids , which are produced by living cells in plants , animals and microorganisms , such as bacteria and fungi. Advantages of enzymes over conventional chemicals E nzyme technology is fast growing and emerging field of science , which has found innumerable applications in the textile wet processing. Since enzymes are natural products , they are easily biodegradable , non polluting , cleaner, gentle , non aggressive with minimum damage to substrate and environment. Enzymes promised a cleaner and environment friendly future by having the capacity and potential to enable us to live harmoniously with the nature.

Reactive dyes   In the simplest terms ,all reactive dyes are made up of three basic units, a chormophore , a bridge and a reactive group/ groups (either a haloheteocycle or an activated double bond). These dyes are used for dyeing of cellulosic fibers and   when these are applied to a   cellulosic fiber in an alkaline dye bath ,they form a covalent bond with hydroxyl group of the fiber by chemically reacting with fiber. The covalent bond formed between the dye molecule and fiber make dye molecule a part of the fiber molecule.

Requi red Chemicals and auxiliaries for dyeing of cotton fabric with sulf ur dye : ·       Na 2 S ·       Na 2 CO 3 ·       NaCl ·       T.R Oil                     Sodium Sulphide (Na 2 S): Function: Sodium Sulfide is used as a strong reducing agent. In textile industry as a bleaching, as a desulfurizing and as a dechlorinating agent . It is treated with sulfur dyes for making soluble dye solution before dyeing.

Aggregation of dyes Dye-dye self association in solution is called dye aggregation, which is important phenomenon where dye molecules or ion takes part. In general, the term aggregation is used for dye-dye interaction and dye association for interaction of dyes with other compounds e.g. polymers. Generally dye molecules form aggregation in aqueous solution at room temperature and to an extent which depend on i.        Size of dye molecules ii.      No of solubilizing groups in the dye molecules

Diffusion Diffusion means penetration/movement of substance owing the existence of conc. gradient i.e. movement of particles between the two surfaces having different density from higher to lower one. This is very important because it affects the fastness properties and the color yield. Diffusion depends on 1.    Dye size and nature of fibers and dyes 2.    Structure of fibers (crystallinity and orientation) 3.    Forces of interaction 4.    Environment pH, solvent, temperature etc

(i) Sequestering Agents Product Name Properties/Uses Diquest - S An high temperature stable sequestarant. (ii) Defoamers Product Name Properties/Uses Finofoam - ND A spot-free silicone-based defoamer Finofoam - NSD Liquid A spot-free non-silicone defoamer .

Mineral colors The word ‘Mineral’ indicates that these are inorganic in nature and these colors differ from all other classes of dyes, which are organic compound. Before introduction of the coal for dyes, these mineral colors formed an important section of the dyes. Mineral color contains metallic insoluble precipitates which are deeply colored. These insoluble precipitates have found great application as pigment for paint. For other purposes of dyeing, the precipitates themselves are not used but they actually created in and on the fibers from the soluble substances

Product Detail :     Model:RBNO - Horizontal Dyeing System - An international best-seller. European Patent and other patents pending in all developed countries. High-temperature and high-pressure dyeing apparatus with horizontal autoclave and modular yarn carriers fitted with vertical spindles. RBNO processes all kind of yarns dyed in conventional machines.

Hard water Hard water caused calcification on this faucet. Hard water is water that has high mineral content (mainly calcium and magnesium ions) (in contrast with soft water ). Hard water minerals primarily consist of calcium (Ca 2+ ), and magnesium (Mg 2+ ) metal cations , and sometimes other dissolved compounds such as bicarbonates and sulfates . Calcium usually enters the water as either calcium carbonate (CaCO 3 ), in the form of limestone and chalk , or calcium sulfate (CaSO 4 ), in the form of other mineral deposits. The predominant source of magnesium is dolomite (CaMg(CO 3 ) 2 ). Hard water is generally not harmful to one's health.

Aggregation of dyes Dye-dye self association in solution is called dye aggregation, which is important phenomenon where dye molecules or ion takes part. In general, the term aggregation is used for dye-dye interaction and dye association for interaction of dyes with other compounds e.g. polymers. Generally dye molecules form aggregation in aqueous solution at room temperature and to an extent which depend on

Restricted Azo Dyes: - In Textile dyeing, color is the necessary elements. To color fabric or yarn there are various type of color dye. Azo dye is one of them. This azo dyes contains one or more nitrogen-nitrogen double bonds called azo group in their chemical structure –N=N-There are twenty above azo group of dye which are harmful to color fabric or yarn and many other purpose . These azo groups also hazard our health, environmental and also skin contact .

Jet Dyeing Machine Overflow Dyeing Machine Soft-flow Dyeing Machine Airflow Dyeing Machine It was found that in using Winch machines, there were some inherent problems. So the Jet dyeing machines when they came up in the 1970's, were specifically designed to overcome those shortcomings.

Dyes are the colouring material that colour commodities of our day to day use. Hardly there is any industry where dyes are not used commercially. From Plastic toys for children to that jazzy t-shirt of yours, every where there is application of dyes. The page tries to give a comprehensive knowledge about the dyes, its sources and the various types that are used successfully.

Continuous dyeing of cotton/polyester and 100% polyester fabrics was performed using mixtures of reactive and disperse dyes, or disperse dyes alone, respectively, and achieving dye fixation by heating, using an electric infrared oven situated in front of an electric hot air unit. Generally, the colors of the thermally produced dyeings were reasonably similar to those of the respective exhaust dyeings obtained using the same recipes. As expected, the thermally produced dyeings usually