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 […]
Knitting Faults in fabric
Knitting Faults in fabric : Weft fabric faults, Causes and Remedies 1. Hole Mark Causes: ❶ Holes are the results of yarn breakage or yarn cracks. ❷ During loop formation the yarn breaks in the rejoin of the needle hook. ❸ If the yarn count is not correct on regarding structure, gauge, course and density. ❹ Badly […]
Drawing Of Synthetic Fibres
Drawing Of Synthetic Fibres Introduction: With the exception of silk , all the filaments are manufactured from man-made materials . silk is a natural filament. The man-made materials are primarily made from chemicals that must be formed and solidified into fibre form. The fibre forming polymers are normally solids and therefore must be first […]
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 […]
Fabric Weight Calculation in GSM
Fabric Weight Calculation in GSM (Woven Fabric) GSM calculation of fabric Fabric is the basic raw material to produce any particular garments . Before going to bulk production , it is quite essential to know and test the GSM of the supplied fabric by the supplier. This GSM can directly be got through […]
Dyeing Jute yarn with Basic dye
Name of the Experiment: – Dyeing Jute yarn with Basic dye. Introduction: It is suitable for acrylic fibers (other fibers by mordanting). It reacts with acetic groups, or mordants a chemical which can react or complex with a chromophore to form an insoluble color in the fibre. It has good fastness properties on acrylic […]
Flat Knitting Technology
Flat Knitting Technology INTRODUCTION : The fabric which is produced by the machine is usually weft knitted fabric. Flat fabric will be produced. In the flat knitting machine needles are kept stationary and the cam will move along the width of the machine ( vice versa to circular knitting machine). It was first invented […]
Auxilaries Of Disperse Dye
Part 1 : Disperse Dye for Polyester | Why called disperse dye | Application and mechanism Part 2 : Method of polyester dyeing | Polyester Dyeing process Auxilaries Of Disperse Dye . Carrier : The extreme crystalline nature of polyester fibre creates problem in obtaining dark shade by conventional dyeing method even at high temperature. The carrier […]