Solar Hot Water Use in Textile, Paper, poultry Feed and etc. Industry Why is solar hot water not utilized as an opportunity to reduce energy costs in industries such as dyeing or those using boilers, despite its potential advantages? whereas: Solar hot water systems can effortlessly provide hot water at temperatures ranging from 60 to […]
Dyeing
Natural Color Substances for Textile Materials
Natural Color Substances for Textile Materials EXPLORATION TEHNIQUE NATURAL DYES SUBSTANCE OF PLANTS IN AROUND US FOR DYEING TEXTILE MATERIALS According to the source of the textile dye is classified into 2, namely: First, Natural Coloring Agent (NCA) is a dye derived from natural materials in generally from the extracts of plants or animals. Second, […]
Reactive Dyes – A Better Alternative To Traditional Dyes?
Reactive Dyes – A Better Alternative To Traditional Dyes? How Is The Dyeing Operation Performed? Dyeing operations are performed by binding dyes to fibres. There are primarily two types of dyes, namely: Water-soluble dyes Water-insoluble dyes When it comes to dyeing fibres, some fibres adhere to and accept dyes easily, while others do not. Depending […]
Light Fastness and Factors Influencing Light Fastness Behavior
Light Fastness and Factors Influencing Light Fastness Behavior Textile Dyes and Pigments used in the industry vary to a great extent in terms of their resistance to light sources and this phenomenon is called as ‘Light-fastness of Textiles’. Sunlight materials emits electromagnetic radiations of several wavelengths. Visible range of spectrum (400 – 700 nm) , […]
What is Color | Color Theory
Color Theory What is Color : Color is the general name of all the sensation arising from the activity of retina of the eye & attached nervous mechanism. We see are the colors of the visual spectrum of red, orange, yellow, green, blue & violet. Objects absorb certain wavelength & reflect others back to […]
Dyeing Auxiliaries | Function of Auxiliaries | Dyeing Method of Vat Dye | part 02
Vat dye | Why called vat dye | Vat dye properties | Uses of Vat dye | Classification of Vat dye | The 1N (indanthrene normal) group | The IW (indanthrene Warm) group | The IK group | Anthraquinonoid | Indigoid | Dyeing of cotton with vat dye | Vat dyeing recipe | Part 01 […]
Dyeing of Cotton with Vat dye | Part 01
Vat dye Vat dye is one of the oldest types of dye. It is mainly suitable for cellulosic fibre for best overall fastness properties. Because of the popularity of blue jeans, indigo is still one of the most important dye in the world in the present time. Natural indigo was extracted by fermenting Indigofera tinctoria […]
Defects of Sulfur Dyeing Part 3
Part 01 :Introduction to Sulfur Dyes | History of Sulfur Dyes | Method of manufacture of Sulfur dye | Trade Names of Sulfur Dyes | Characteristics of Sulfur Dyes | Features of Sulfur Dye | Chemical Structure of Sulfur Dye | Chemical Nature of Sulfur Dyes | Chemistry of dyeing with Sulfur Dye Part […]
Classification of Sulpher Dyes Part 2
Part 01 :Introduction to Sulfur Dyes | History of Sulfur Dyes | Method of manufacture of Sulfur dye | Trade Names of Sulfur Dyes | Characteristics of Sulfur Dyes | Features of Sulfur Dye | Chemical Structure of Sulfur Dye | Chemical Nature of Sulfur Dyes | Chemistry of dyeing with Sulfur Dye Part […]
Introduction to Sulfur Dyes Part 1
Introduction to Sulfur Dyes Sulfur dyes are complex heterocyclic molecules or mixtures formed by melting or boiling organic compounds containing amino or nitro groups with Na-polysulphide and Sulfur. Sulfur dyes are so called as they all contain Sulfur linkage within their molecules. Sulfur dyes are highly coloured, water insoluble compounds and have to be […]