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Varietal Effects on the White Speck Phenomenon

P.D. Bel-Berger, T.M. Von Hoven and W.R. Goynes


 
ABSTRACT

This paper examines the white speck phenomenon as seen in different varieties. Five varieties were grown in the same field, while 26 other varieties were from different locations across the cotton belt. AMS processed the 5 varieties in the same manner as the 26 varieties from the 26 Leading Variety Survey. The yarns were then arranged into a common warp to produce a filling faced sateen fabric, dyed and analyzed by image analysis for white specks. The fiber properties reported by AMS, along with AFIS fiber properties were correlated with the fabric properties. AMS fiber data includes classing data, HVI (MCI and Spinlab), Stelometer, Suter-Webb length array, Mic/Shirley FMT, S.A. non-lint content, Neps of raw cotton (AFIS-N (neps/gram), Raw stock neps (neps /100 sq. In.)). Image analysis by Optimas 5.2 software defined the appearance and quality of a finished fabric in terms of the white speck phenomenon. Defined as dye resistant neps, the white specks are composed of very immature or undeveloped fibers. Past research indicates that there is a connection between micronaire and the level of white speck. This study demonstrates what fiber properties are important in the prediction of a potential white speck problem. The study also compares carding with combing. Four varieties from the 26 Leading Variety Study by AMS were carded and combed; two Maxxa and two Royale cottons were employed for this research. Image analysis of the dyed fabrics showed combing reduces the white speck problem as compared with single carding.



Reprinted from Proceedings of the 1997 Beltwide Cotton Conferences pp. 565 - 571
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998