In the composites industry, a tow is an untwisted bundle of continuous filaments, and it refers to man-made fibres, particularly carbon fibres (also called graphite). Tows are designated by the number of fibers they contain. For example, a 12K tow contains about 12,000 fibres.
In the textile industry, a tow is a coarse, broken fibre, removed during processing flax, hemp, or jute. Flax tows are often used as upholstery stuffing, and tows in general are frequently cut up to produce staple fibre.
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