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Cotton's simple Micronaire value is determined by both the fineness of the fibres as well as their maturity. [16] Micronaire values or reading represents the fineness of the cotton fiber. For example, a preferred micronaire range is 3.7 to 4.2. Upland cotton is coarser than Gossypium barbadense (Pima cotton). [17
The more dimensionally stable a fabric is, the less it is subject to shrinkage. Shrinkage is the change of dimensions in textile products when they are washed or relaxed. The change is always expressed relative to the dimensions before the exposure of washing or relaxing. Shrinkage is also called residual shrinkage and measured in percentage.
The name "American Pima" was formally adopted by the United States government in 1970. [11] The American Pima market class was the result of government efforts to enable United States farmers to compete in the "Egyptian cotton" market. Circa 1900, the United States led in production of all the major market classes except Egyptian. H. J.
Sanforization is a treatment for fabrics to reduce shrinkage from washing. The process was patented by Sanford Lockwood Cluett (1874–1968) in 1930. It works by stretching, shrinking, and fixing the woven cloth in both length and width before cutting and producing, to reduce the shrinkage which would otherwise occur after washing. The original ...
Mercerized cotton yarn reels Spool of a two-ply mercerized cotton thread with a polyester core. Mercerisation is a textile finishing treatment for cellulose fabric and yarn, mainly cotton and flax, which improves dye uptake and tear strength, reduces fabric shrinkage, and imparts a silk-like luster.
Dimensional stability (fabric), also known as shrinkage in fabrics is the change of dimensions in textile products when they are washed or relaxed. Durable water repellent, is a functional finish to make fabrics water-resistant (hydrophobic). Enhanced coloration
Supima is a non-profit trade association in the United States whose main objective is to promote the use of U.S. grown American Pima cotton around the world [1] and is involved in quality assurance and research programs. Founded in 1954, it derived its name from superior pima. [2]
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]