In weaving cloth, the warp is the set of lengthwise yarns that are held in tension on a frame or loom. The yarn that is inserted over-and-under the warp threads is called the weft, woof, or filler. Each individual warp thread in a fabric is called a warp end or end. Warp means "that which is thrown across" (Old English wearp, from weorpan, to throw, cf. German werfen, Dutch werpen).
Because the warp is held under high tension during the entire process of weaving and warp yarn must be strong, yarn for warp ends is usually spun and plied fibre. Traditional fibres for warping are wool, linen and silk. With the improvements in spinning technology during the Industrial Revolution, it became possible to make cotton yarn of sufficient strength to be used as the warp in mechanized weaving. Later, artificial or man-made fibres such as nylon or rayon were employed.
Warping machines have been invented to provide solutions for gauging yarn strength, length measurement and count measurement. Just like a sewing machine, warping machinery is manually operated for preparing leas yarn. Additionally, the machine is made available in two model options: the metric and the imperial system.
- Burnham (1980), pp. 170, 179
- Barber (1991), p. 79
- Burnham (1980), p. 132
- Sewing machine reviews all about sewing machine reviews
- Barber, E. J. W. (1991). Prehistoric Textiles. Princeton University Press. ISBN 0-691-00224-X.
- Burnham, Dorothy K. (1980). Warp and Weft: A Textile Terminology. Royal Ontario Museum. ISBN 0-88854-256-9.
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