Anatomy of a Nep

Hébert, J.; Boylston, E. K.; Thibodeaux, Devron P.

doi:10.1177/004051758805800702

Cited by 21 publications

(12 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been noted that the fibres in these neps are usually dead or very immature and are stuck together in a parallel arrangement. 74,75 This suggests that these neps are formed when the boll ripening process is interrupted by insect attack, extreme weather or the premature application of a harvest aid. When these fibres are processed they do not separate from the cemented clump, although the clump may be broken into smaller particles.…”

Section: Biological Nepsmentioning

confidence: 99%

Cotton fibre quality

Gordon

2007

Cotton

View full text Add to dashboard Cite

Section: Biological Nepsmentioning

confidence: 99%

Cotton fibre quality

Gordon

2007

Cotton

View full text Add to dashboard Cite

“…Neps that appeared as lighter specks against the dyed background were composed primarily of immature fibers (Figures 3 and 4). Using the classification system devised by Hebert and co-workers [ 6 ] , we also determined the proportion of mechanical neps ( i.e., those composed completely of fibrous material) and the number of biological neps (i.e., those containing foreign material such as seedcoat fragments). As shown in Table III, comparatively few of the neps contained foreign fragments.…”

Section: Evaluation Of Visually Undyed Nepsmentioning

confidence: 99%

Web-Nep Procedure for Predicting Potential Dyeing Problems in Cotton1

Cheek¹,

Hsu²,

Thibodeaux³

1990

Textile Research Journal

View full text Add to dashboard Cite

A procedure is presented to distinguish between immature fiber neps and neps composed of thin, mature fibers in cotton lint. The procedure consists of dyeing webs, produced from lint that has been processed to produce mechanical neps, with a dye known to resist coverage of immature cotton, and identifying those neps that present a contrast in shade against the mass of dyed fiber. On the basis of the three samples used in this initial study, good correlation appears to exist between the number of undyed neps in dyed fiber webs and the number of cloth neps in the finished dyed fabric produced from that fiber.The problem of excessive neppiness in cotton fiber, which results in large numbers of apparently undyed specks in the dyed fabric, has been an area of concern to the American textile industry for more than half a century. Formed as a function of the entanglement of . 6bers during fiber preparation and yam processing, neps are known to vary in composition. Pearson has described fifteen different kinds of neps, based on the types of fibers that enter into the tangle and the presence -of foreign particles within the fiber mass [ 11 ] . Although a direct relationship is known to exist between nep formation and the proportion of thin-walled fibers in the cotton lint, thin mature fibers also have a tendency to form entanglements. While conditions of growth and 6ber cleaning and processing conditions appear to affect nep formation, fiber variety is considered especially crucial in determining nepping propensity [ 7, 8, 12]. Neps formed from thin, fully mature fibers do not appear to present a problem to the textile dyer; only those neps composed primarily of immature fibers show up as light specks on the finished fabric [ 4 J. There have been several procedures developed to evaluate the nepping potential of cotton fiber [ 1 b, 1 c, 2 ] , but there is no method currently available to distinguish between those neps composed of fully mature, thin 6btrs and those from immature fibers with poorly developed secondary walls. Although Harrison and Bargeron found reasonable correlations between micronaire, card nep counts, and yam nep count data [ 5 ] , Hughs and Lalor found that there was no consistent relationship between card nep, yarn nep, and cloth nep counts [ 7 ] . Hughs and Lalor saw dramatic differences in the number of cloth dyeing imperfections, i.e., cloth neps, in the dyed fabric produced from fibers of different varieties that had appeared to show fairly small differences in raw nep count or card web nep counts.One of these fibers produced cloth with considerably fewer ( nep ) dyeing imperfections than would have been predicted from the fiber nep counts, while a second fiber produced cloth with considerably more dye-resistant neps than would have been predicted based on the fiber nep data. These findings illustrate the limitations of fiber-level nep counts as predictors of dyeresistant neps in the finished fabric.There is a current focus on the development of finer, longer fibers that will produce high count' yar...

show abstract

“…In addition, motes are easily broken and crushed during ginning (separation of the seeds, hulls and other small objects from the cotton). Immature and dead fibres are finer in structure, due to their lack of secondary wall development and have a higher propensity than more mature fibres to form neps (Hebert et al 1988). Neps that involve immature fibres accept dyes poorly since they have thin and incomplete cell walls (Smith 1991) and thus appear as light or white spots on the surface of dyed fabrics (Bel-Berger et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Genetic variation among cotton (Gossypium hirsutum L.) cultivars for mote frequency

Bolek

2006

J. Agric. Sci.

View full text Add to dashboard Cite

Motes are cotton (Gossypium spp.) ovules that fail to ripen into mature seeds. These aborted ovules represent a loss in yield and can cause imperfections in yarn and cloth quality. The present study was conducted to determine whether 10 widely grown cotton cultivars differ in some boll characters that are undesirable for the textile industry. The bolls at the first positions of fruiting branches formed at 1st (bottom), 6th (middle) and 11th (top) nodes of the main stem were compared in 10 varieties in 2 years for the number of motes and their weights, mote production frequency, and long fibre mote frequency within a boll.Mote frequencies and mote weights were affected by varieties and years. Moreover, mote frequencies were higher at the bottom and middle plant positions compared with the top position.Fibre length for long fibre motes ranged from 18 to 21 mm. In both years, cultivars Deltaopal, Sayar 314 and Suregrow 125 had consistently lower mote and long fibre mote frequencies. Thus, these cultivars could be useful in breeding programmes to improve seed-set. Cotton breeders also need to consider long fibre motes in plant improvement studies.

show abstract

Anatomy of a Nep

Cited by 21 publications

References 3 publications

Cotton fibre quality

Cotton fibre quality

Web-Nep Procedure for Predicting Potential Dyeing Problems in Cotton1

Genetic variation among cotton (Gossypium hirsutum L.) cultivars for mote frequency

Contact Info

Product

Resources

About