Search results
Results from the WOW.Com Content Network
Early method of bleaching cotton and linen goods on lawns A bleach worker. 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]
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.
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 ...
For large loads of dull-looking white clothes or bedding, it’s best to add no more than ¼ teaspoon of the liquid to water in the washer drum, according to the brand.
In general, discharge techniques, particularly using household bleach, are a readily accessible way to tie-dye without the use of often messy and relatively expensive dyes. It is particularly easy to put a design on cloth using stencils and sprayed-on solutions of household bleach, but the intricate and unintended results of discharge using ...
With a little care, your whites can stay bright, even as you enjoy your colorful life. The post How to Wash White Clothes to Keep Them Looking Bright appeared first on Reader's Digest.
Discharge printing, in which a bleaching agent is printed onto previously dyed fabrics to remove some or all of the colour. Resist and discharge techniques were particularly fashionable in the 19th century, as were combination techniques in which indigo resist was used to create blue backgrounds prior to block-printing of other colours. [5]
The table shows how the two systems rate high-brightness papers, but there is no simple way to convert between the two systems because the test methods are so different. [4] The ISO rating is higher and can be over 100. This is because contemporary white paper incorporates fluorescent whitening agents (FWA). Because the ISO standard only ...