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The term washing fastness of textiles pertains to the capacity of textile materials, such as fabrics or garments, to maintain their original colour and appearance after undergoing multiple washing and laundering processes. It signifies the textile's ability to endure repeated washing without experiencing fading, bleeding, or other undesirable ...
The low water solubility is the basis of the good wash-fastness of these dyed fabrics. These dyes have good all-around colour fastness except to chlorine bleaches. Because the dye is water-insoluble, it will not bleed when washed in water and will not stain other clothes. The dye, however, may have poor fastness to rubbing.
Acid dyes are anionic, soluble in water and are essentially applied from acidic bath. These dyes possess acidic groups, such as SO3H and COOH and are applied on wool, silk and nylon when ionic bond is established between protonated –NH2 group of fibre and acid group of dye. Overall wash fastness is poor although lightfastness is quite good ...
Cotton is an absorbent fibre which responds readily to colouration processes. Dyeing is commonly carried out with an anionic direct dye by completely immersing the fabric (or yarn) in an aqueous dyebath according to a prescribed procedure. For improved fastness to washing, rubbing, and light, other dyes such as vats and reactives are commonly ...
Dyeing Pigments for sale at a market in Goa, India Cotton being dyed manually in contemporary India Silk dye in pan on stove. Khotan. Dyeing is the application of dyes or pigments on textile materials such as fibers, yarns, and fabrics with the goal of achieving color with desired color fastness.
Washing is indicated by the symbol that looks like a cup, basin, or "tub." When it comes to machine washing, your options are machine wash (the tub symbol with a curvy line to indicate water ...
Here's what they mean and how to use them. The post A Guide to Laundry Symbols: Find Out What Those Washing Symbols Mean appeared first on Reader's Digest. A Guide to Laundry Symbols: Find Out ...
Fabric testing includes measurements such as fabric weight, fabric width, shrinkage testing, colour fastness to washing, fastness to light, pilling, tearing and bursting strength, etc. The primary consideration in fabric selection is the end use. The fabric needs vary greatly depending on the application.