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The textile bleaching (or bleaching of textiles) is one of the steps in the textile manufacturing process. The objective of bleaching is to remove the natural color for the following steps such as dyeing or printing or to achieve full white . [ 1 ]
A major source of chemical bleaching is hydrogen peroxide (H 2 O 2) that contains a single bond, (–O–O–). When the bond breaks, it gives rise to very reactive oxygen specie, which is the active agent of the bleach. Around sixty percent of the world's hydrogen peroxide is used in chemical bleaching of textiles and wood pulp. [7]
A bleachfield or bleaching green was an open area used for spreading cloth on the ground to be purified and whitened by the action of the sunlight. [1] Bleaching fields were usually found in and around mill towns in Great Britain and were an integral part of textile manufacture during the British Industrial Revolution .
Scouring is an essential pre-treatment for the subsequent finishing stages that include bleaching, dyeing, and printing. [5] Raw and unfinished textiles contain a significant amount of impurities, both natural and foreign. It is necessary to eliminate these impurities to make the products ready for later steps in textile manufacturing. [6]
Also, use diluted bleach wisely. For small spots, dabbing with a cotton swab of diluted bleach might be a simple and powerful solution. Last, air dry your white clothing outside, if possible.
Reductive bleaching is also carried out, using sodium hydrosulphite. Fibers like polyamide, polyacrylics and polyacetates can be bleached using reductive bleaching technology. After scouring and bleaching, optical brightening agents (OBA), are applied to make the textile material appear more white. These OBAs are available in different tints ...
The English name reflects the historical use of the material for fulling (cleaning and shrinking) wool, by textile workers known as fullers. [1] [2] [3] In past centuries, fullers kneaded fuller's earth and water into woollen cloth to absorb lanolin, oils, and other greasy impurities as part of the cloth finishing process.
This is a common method used in households to remove a variety of stains. Depending on the stains composition, the stained material is left to soak in a container of warm or cool water and solvent. Such solvents can include laundry detergent, bleach, peroxide, vinegar, or a cleaning product with enzymes.