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Measuring Fiber Fineness with the Sheffield Apparatus

Laboratoire de Genie et Matériaux Textiles-ENSAIT, Ecole Supérieure des Techniques Industrielles et des Textiles, BP 209, F59654 Villeneuve d'Ascq, France

Pierre Lejarre

Equipe de Recherche en Automatique des Systèmes et Microsystèmes Département Instrumentation et Méthodologies F59046 Lille Cédex, France

The Sheffield apparatus measures the fineness of cotton fibers in a sample. It gives a direct readout of the micronaire reading, that is to say, the average number of micrograms per inch of the fibers. The principle is based on a permeability-to-air method. The drawback with this apparatus is that the measurement is made on a sample with a mass defined to the nearest milligram (3.240 ± 0.001 g), which requires a relatively long measuring time. This paper attempts to show that it is possible to overcome this constraint by using a sample with a mass of between 2.5 and 3.5 g, thus reducing the measuring time by approximately 50%.

Textile Research Journal, Vol. 72, No. 3, 227-231 (2002)
DOI: 10.1177/004051750207200308


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