In the composites industry, a tow is an untwisted bundle of continuous filaments, and it refers to fibres, particularly carbon fibres (also called graphite). Tows are designated by the number of fibres they contain, e.g. a 12K tow contains about 12,000 fibres. In the textile industry, a tow (rhymes with cow, unless referring to cellulose acetate which sounds like toe) is a coarse, broken fibre such as flax, hemp, or jute.
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