It is an essential criterion in yarn spinning, and aids in cohesion and twisting.
Gossypium barbadense, one of several cotton species, produces extra-long staple fibers.
[7] 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.
Today, machines such as Optical scanning methods like digital fibro graph and HVI are used to measure fiber length; they can measure the staple length efficiently.
Traditionally, cultivars of Gossypium barbadense fall into the "long-staple" category.
Long-staple fibers contribute to better spinnability and strength, delivering regular yarns of superior quality.
The United States Department of Agriculture categorizes the staple length of cotton fibers for convenient cotton classing as follows:[14][15][16] In wool, fineness is the major criterion.
[18] Longer (more than 3 in or 76 mm) and finer wool yarns are used in fine worsted materials, and coarser and short-staple yarns (1–3 in or 25–76 mm) produce woolen materials.
[19][20][21] Synthetic fibers are produced artificially by humans through chemical synthesis.