A slub in textiles production refers to thickened areas of a

fiber Fiber or fibre (from la, fibra, links=no) is a natural or artificial substance that is significantly longer than it is wide. Fibers are often used in the manufacture of other materials. The strongest engineering materials often incorpora ...

yarn Yarn is a long continuous length of interlocked fibres, used in sewing, crocheting, knitting, weaving, embroidery, ropemaking, and the production of textiles. Thread is a type of yarn intended for sewing by hand or machine. Modern manu ...

. Slubbed or slubby fabric is woven from slubby yarn (yarn with a very variable diameter). Both high and low slubbiness may be sought. Slubs in spun fibers may be produced deliberately by varying spinning tension (see Novelty yarns#Slub). They are also produced when short, staple fibers are spun into a single yarn. Slubs may be valued or deliberately produced for aesthetic effect, but they may also be regarded as a defect caused by either uneven spinning or using low-grade, lumpy or short-staple fiber.

Types

Slubby cotton fabric includes: *

Madras (cloth) Madras is a lightweight cotton fabric with typically patterned texture and tartan design, used primarily for summer clothing such as pants, shorts, lungi, dresses, and jackets. The fabric takes its name from the former name of the city of Che ...

, woven from short-staple cotton *Some

denim Denim is a sturdy cotton warp-faced textile in which the weft passes under two or more warp threads. This twill weaving produces a diagonal ribbing that distinguishes it from cotton duck. While a denim predecessor known as dungaree has been p ...

used for jeans; the slubs cause the cloth to fade unevenly, in a pattern called Linen is often slubbed.

Wool Wool is the textile fibre obtained from sheep and other mammals, especially goats, rabbits, and camelids. The term may also refer to inorganic materials, such as mineral wool and glass wool, that have properties similar to animal wool. ...

fabrics, such as

tweed Tweed is a rough, woollen fabric, of a soft, open, flexible texture, resembling cheviot or homespun, but more closely woven. It is usually woven with a plain weave, twill or herringbone structure. Colour effects in the yarn may be obtained ...

s, may also be slubbed. Hand Dyed Silk Noil

Silk is a filament fiber, and the only natural fiber type to come in filament length naturally (strands can be over 1.5 km long). However, some silk fibers are shorter in length, and must therefore be processed as shorter-staple fibers, not as filament fibers, to make cloth. These shorter fibers, known as

silk noil Noil refers to the short fibers that are removed during the combing process in spinning. These fibers are often then used for other purposes. Fibers are chosen for their length and evenness in specific spinning techniques, such as worsted. The s ...

, may also be used unspun (for instance, as wadding in a quilted garment), but are often plied into threads (which are then at least twice as thick as the filament) and used in the production of slubbed silks. Slubbed silks include: * Pongee *

Shantung (fabric) Shantung is a type of silk plain weave fabric historically from the province of Shandong. It is similar to Dupioni, but is slightly thinner and less irregular. Shantung is often used for bridal gowns. Structure Shantung is a fabric with a rib ...

Dupioni Dupioni (also referred to as douppioni or dupion) is a plain weave silk fabric, produced using fine yarn in the warp and uneven yarn reeled from two or more entangled cocoons in the weft. This creates tightly woven yardage with a highly-lustrous ...

* * *

Thai silk Thai silk ( th, ผ้าไหมไทย, , ) is produced from the cocoons of Thai silkworms. Thailand's silkworm farmers cultivate both types of the domesticated silkworms that produce commercial silk: ''Samia ricini'', commonly known as the ...

*Some

tussah Tussar silk (alternatively spelled as tussah, tushar, tassar, tussore, tasar, tussur, or tusser, and also known as (Sanskrit) ''kosa'' silk) is produced from larvae of several species of silkworms belonging to the moth genus '' Antheraea'', incl ...

silk *

Eri silk Eri silk (Khasi'': Ryndia)'' is the product of the domesticated silkworm '' Samia ricini'', found mainly in North East India and some part of China and Japan. It was imported to Thailand in 1974. The name "eri" is derived from the Assamese word ...

Slubby mixed-fiber fabric include: * Bourette * "Antique" satin Synthetic fibers can readily be produced in filament form, as very long lengths of consistent diameter, but it is sometimes slubbed for effect.

References

{{textiles Textiles