LOOP YARN

This is the same as curl yarn.

A variety of loop yarn made in Germany, with two ground threads around which is twisted a coarser thread of much greater length to produce the loops.

Same as Loop yarn.

Has a curled or loop effect and largely used to produce the boucle cloth. These yarns are usually three-fold. May be produced by either of two methods. The yarn may be three-fold, and during doubling, one of the strands is delivered faster than the other two, or a two-fold yarn is prepared and one of the strands is fed at a greater speed to produce the loop, then this doubled yarn is twisted with a single fine thread which binds the loops in position.

A dress or costume fabric made from worsted yarns. The cloth is fulled and slightly raised. The weave is a herringbone twill with narrow stripes of another simple weave dividing the twill ground into stripes. A fancy loop yarn is also used as extra ornament.

The yarn which forms the face of fabrics such as velvets, velveteens, terry, etc. There are several varieties, viz., warp pile, weft pile, and knotted pile, and cut, loop or curl pile. Warp Pile is formed by an extra warp additional to and much longer than the ground warp. The pile threads are woven over wires which, when removed, leave loops either uncut or cut. This system is used for wool and silk velvets and many carpets, rugs, etc. Terry fabrics have looped pile formed by weaving without wires. Weft Pile is formed by weft floats which are cut after the cloth is woven to make the pile as seen in velveteens, corduroys, etc. Knotted Pile is made by hand by knotting short lengths of yarn to the warp threads. Design is formed by using pile threads of different colours. After the rug or carpet is woven the pile is trimmed to a uniform length. Curl Pile is produced by weaving two kinds of yarn in the same cloth, a non-shrinking yarn being floated loosely on the surface while a yarn that shrinks readily is interwoven closely. When the cloth is shrunk the unshrinking yarn forms curls on the surface, as in astrakhans.

(See knitting). All yarns used for knitting are termed hosiery yarns in Leicester, but in America only yarns actually used for knitted footwear come under this term. These yarns are much softer than required for weaving. Miscellaneous Yarns - Goat wools, such as llama and alpaca are employed in spinning. yarns for the knitting trade. Vicuna and camel yarns are used to a limited extent. Ramie yarn is specially employed for knitting gas mantle fabrics. Soft spun flax yams have been used for making underwear fabric. Chenille and other manufactured threads are used to a small extent in warp knitting. Composite yarns, such as union yarns - spun from a mixture of wool and cotton fibres; cordon yarns - cotton and worsted singles, doubled together; wool and rayon or spun silk, cotton and rayon or spun silk are largely used to produce self or two-colour effects. Fancy yarns, such as slub yams, voiles, and curled and loop yarns are also employed. Hosiery Yarns (Cotton) include condenser, hosiery, condenser lisle thread, mercerised and sewing cottons. Condenser yarns are spun in coarse counts from low-grade cotton, Indian and American. They are carded, condensed and mule spun, and possess little twist. Hosiery cotton yarns vary considerably in counts and qualities, practically all varieties of Indian, American and Egyptian being used in varying proportions to obtain suitable mixture for quality and price. Cheaper yarns are carded and mule spun. American and Egyptian cotton yarns are combed mainly with the object of removing seed particles. High-class Egyptian and Sea Islands cotton yarns are super-combed. The chief features of a hosiery cotton yam should be: (1) Regularity; (2) cleanliness; (3) fullness. Regularity prevents the making of cloudy fabric, showing thick and thin places. Cleanliness is essential, as the seed particles clog the eyelet hole in the yam guides and cause breakages. Fullness is desirable to cover the loop interstices. Elasticity and pliability are quite as essential as tensile strength. Yams are usually soft spun and if two-fold soft doubled, average twists in two-fold being 2/10's 6¹/₂T., 2/20's 8¹/₂T., 2/30's 10T., 2/40's 16T., 2/80's 20T. Softer twist less 25 to 30 per cent of average (T= turns per inch). Lisle thread is a comparatively hard-twisted and doubly-gassed thread in which there are no projecting fibres. It is always of a two-fold character, and the doubling twist varies from 24 to 34 turns per inch in 2/60's. It is used largely in the manufacture of ladies' hose tops and feet and for lace hosiery. Mercerised yams are used largely in the fancy trade, a comparatively soft twist again being employed. Sewing cottons for seaming, linking and making-up are specially prepared in two to six cord open and reverse twist. Woollen and Worsted Yarns include lamb's wool, wheeling, skein yarns, gala yams (woollens), worsted, crossbreds, fingering, cashmere, dry spun botany (see under each name). Worsted and crossbred yarns of various qualities are used. These yams are spun softly with " hosiery twist." The drawing may be open, cone or French, and the spinning may take place on cap, ring or flyer frames. The chief essentials of hosiery yarn are softness of fibre, fullness, minimum of twist consistent with the requisite tensile strength, regularity, pliability and elasticity. Cashmere Yarns, as used in the knitted goods industry, are spun from short, loose and weak wools as well as from better qualities by French drawing and mule spinning. A small proportion of real cashmere is used for outer garments. In recent years nylon yarns have been largely employed.

A soft, curly, strong wool, obtained from a sheep reared in Astrakhan, Persia, and other Asiatic districts. A cloth of silk and worsted, or all worsted, with a long loosely curled pile, and put on the market as an imitation of real astrakhan. Mohair yam is largely used. The worsted fabric is made in widths 56 to 70-in., 48 X 78 picks, two-fold botany warp, about 2 / 56's to 2 / 70's, and the weft four picks single botany and two picks three-fold mohair. The mohair weft yarn is curled before using, which, when cut (similar to velveteen) causes the free ends of the tufts to curl on the face of the cloth. This cut fabric is known as "Polarian". Sometimes the pile is left uncut. A good quality cloth is made 48-in. wide, 48-ends, 150 picks per inch, 2 / 30's cotton warp, one pick 24's cotton weft, and two picks 88's mohair. A knitted fabric is also on the market as an imitation astrakhan. This is the cheapest method, but does not give the same weight or wearing quality. Astrakhan fabrics are made in two ways: - (1) On the weft principle, in which by the shrinking of the ground texture the pile weft is thrown up as a loop; (2) as a warp texture, in which loops are formed by the warp yarn passing over wires.