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Textile fibers, threads, yarns and fabrics are measured in a multiplicity of units.. A fiber, a single filament of natural material, such as cotton, linen or wool, or artificial material such as nylon, polyester, metal or mineral fiber, or human-made cellulosic fibre like viscose, Modal, Lyocell or other rayon fiber is measured in terms of linear mass density, the weight of a given length of ...
Classification of cotton, or cotton classing, is based on fiber characteristics that include staple length, strength, cotton maturity, micronaire (a measure of the cotton's fineness), color grade, color reflectance, color yellowness, and trash percent area.
Cotton classification, or classing, is the process of classifying cotton based on its grade, staple length, and micronaire. [14] Micronaire is a measure of cotton maturity. [15] Maturity of cotton fibers is measured with single fiber measurement test or by double compression air flow test. It is expressed in percentage or maturity ratio. [11]
For cotton and wool, staple length was originally tested by hand, the tester removing a clump of fiber and then arranging it on a dark cloth for measurement. In the 1970s, machines were invented to do this task, taking around 5 minutes for cotton and for wool around 20 minutes.
After the fiber has attained its maximum diameter, new layers of cellulose are added to form the secondary wall. The fibrils are deposited at 70 to 80-degree angles to the fiber axis, reversing angle at points along the length of the fiber. [132] The lumen is the hollow canal that runs the length of the fiber.
Cotton classification, or classing, is the process of classifying cotton based on its grade, staple length, and micronaire. [13] Micronaire is a measure of cotton maturity. [14] Maturity of cotton fibers is measured with single fiber measurement test or by double compression air flow test. It is expressed in percentage or maturity ratio. [15]
Cotton fibres differ in terms of staple length and other physical characteristics; this is an inherent feature. [5] Bale management, also known as "bale mixing," is the process of analysing, classifying, and then blending fibres from various bales [which also includes the bales received from other stations] according to their fibre properties ...
Cotton classing is required to measure and classify each cotton bale according to its specific physical attributes. Measurement information produced by Uster's HVI (High Volume Instrument) covers following parameters: fiber length, length uniformity, fiber strength, fiber maturity, short fiber content, micronaire (fiber fineness), color grade ...