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Lab Reports

Dyeing Of Cotton Fabric With Sulpher Dyes

May 1, 2020 LearnTextiles 0

Dyeing Of Cotton Fabric With Sulpher Dyes Introduction: Sulpher dyes are complex heterocyclic molecules or mixtures formed by melting or boiling organic compounds containing amino or nitro groups with Na-polysulphide and Sulpher. Sulpher dyes are so called as they all contain Sulpher linkage within their molecules. Sulpher dyes are highly coloured, water insoluble compounds and […]

Lab Reports

Dyeing Of Cotton Fabric With Reactive Dyes

May 1, 2020 LearnTextiles 0

Dyeing Of Cotton Fabric With Reactive Dyes Introduction: A dye, which is capable of reacting chemically with a substrate to form a covalent dye substrate linkage, is known as reactive dye. Here the dye contains a reactive group and this reactive group makes covalent bond with the fibre polymer and act as an integral part […]

Fabric Engineering

Study on the Rib Circular Knitting Machine and Knitting Action of Rib Circular Knitting Machine

April 27, 2020 LearnTextiles 0

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Study on the Rib Circular Knitting Machine and Knitting Action of Rib Circular Knitting Machine Inroduction: On a double knitting machine, the needles are “gaited” — the needles in the dial and the cylinder are spaced in relationship to each other. With rib gaiting, the two sets of needles are not directly opposite each other, […]

Lab Reports

Printing (Solid-color) on polyester fabric with Pigments ( Rotary screen )

April 27, 2020 LearnTextiles 0

Printing (Solid-color) on polyester fabric with Pigments ( Rotary screen ) Theory: Printing means localized application of Dyes or other color producing substance according to design outlines. Now a days polyester fabric use frequently and for printing pigments are very popular. Pigments have very high color yield and fastness properties. They do not need any […]

Lab Reports

Dyeing Of Cotton Fabric With Pigments In A Padding Mangle

April 27, 2020 LearnTextiles 0

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Dyeing Of Cotton Fabric With Pigments In A Padding Mangle Theoretical knowledge: The Padding Mangle is perhaps the most familiar & most universal of all Textile dyeing and finishing machiney. Basically it appears to be quite a simple machine. performing its task of removing the excess liquid from the fabric in a simple way.but behind […]

Lab Reports

Dyeing Of Cotton Fabric With Hot Brand Reactive Dyes In Exhaustion Method

April 27, 2020 LearnTextiles 0

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Dyeing Of Cotton Fabric With Hot Brand Reactive Dyes In Exhaustion Method (Combination Shade) Object: To dye a material practically. To observe the practical advantages and disadvantages of this dye. To compare the theoretical idea with practical experiment. Introduction: Reactive dyes forms covalent bond with fibre polymer and thus attach itself with fibre. It is […]

Lab Reports

Dyeing Of Cotton Fabric With Cold Brand Reactive Dye In Exhaustion Method (Single Shade)

April 25, 2020 LearnTextiles 0

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Dyeing Of Cotton Fabric With Cold Brand Reactive Dye In Exhaustion Method (Single Shade) Introduction: A dye, which is capable of reacting chemically with a substrate to form a covalent dye substrate linkage, is known as reactive dye. Here the dye contains a reactive group and this reactive group makes covalent bond with the fibre […]

Lab Reports

Dyeing Of Cotton Fabric With Azoic Dyes

April 25, 2020 LearnTextiles 0

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Dyeing Of Cotton Fabric With Azoic Dyes Object: To dye a material practically. To observe the practical advantages and disadvantages of this dye. To compare the theoretical idea with practical experiment. Introduction: Azoic dyes are not ready-made dyes but are produced by reaction of two components-Diazocomponent or Base/Salt and Coupling component (Naphthol). Dye formation in […]

Lab Reports

Dyeing Of Nylon Yarn With Acid Dye

April 25, 2020 LearnTextiles 0

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Dyeing Of Nylon Yarn With Acid Dye Objects: – The main object of this process is to iron the fabric. To dye nylon yarn. To know about acid dyestuff. To know how it work. To have an idea of dyeing curve on Nylon yarn. To know about the recipe. Introduction: Acid dyes are sodium salts […]

Lab Reports

Determination Of Wash Fastness Of A Dyed Sample

April 25, 2020 LearnTextiles 0

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Determination Of Wash Fastness Of A Dyed Sample Introduction: The resistance to the loss of colour of any dyed or printed material to washing is referred to as its wash fastness. If the dye molecules is not penetrated through the inner structure of fibre polymer system or have not attached to the fibre with strong […]