A woven fabric (e.g. cotton serge) is formed from yarns having a density of 6-16 on the English system (i.e. the value 6 indicates 6m of yarn weigh 455.6g) and some of the yarns (i.e. the warp yarns) are superficially dyed (i.e. only the outer fibres are dyed) while the remainder of the yarns (e.g. weft yarns) are undyed. The surface of the fabric is then brushed to produce a pile formed by a mixture of dyed and undyed fibrils which produce a two-tone effect. Pref. the warp and weft yarns have a twist level of 10-20 turns/cm. The fabric is dimensionally stable soft to touch and hard wearing.
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