Textile. Tuesday , June 05th , 2018 - 17:01:10 PM
Textiles are often dyed with fabrics available in almost every colour. The dyeing process often requires several dozen gallons of water for each pound of clothing.19 Coloured designs in textiles can be created by weaving together fibres of different colours (tartan or Uzbek Ikat) adding coloured stitches to finished fabric (embroidery) creating patterns by resist dyeing methods tying off areas of cloth and dyeing the rest (tie-dyeing) or drawing wax designs on cloth and dyeing in between them (batik) or using various printing processes on finished fabric. Woodblock printing still used in India and elsewhere today is the oldest of these dating back to at least 220 CE in China. Textiles are also sometimes bleached making the textile pale or white.
Weaving is a textile production method which involves interlacing a set of longer threads (called the warp) with a set of crossing threads (called the weft). This is done on a frame or machine known as a loom of which there are a number of types. Some weaving is still done by hand but the vast majority is mechanized.
Textiles receive a range of treatments before they reach the end-user. From formaldehyde finishes (to improve crease-resistance) to biocidic finishes and from flame retardants to dyeing of many types of fabric the possibilities are almost endless. However many of these finishes may also have detrimental effects on the end user. A number of disperse acid and reactive dyes (for example) have been shown to be allergenic to sensitive individuals.24 Further to this specific dyes within this group have also been shown to induce purpuric contact dermatitis.
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