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. 2021 Feb 23;13(4):665. doi: 10.3390/polym13040665

Table 2.

Fineness classification of fibers.

Type of Fiber Fiber Fineness (dtex)
Thick fibers >7
Semi-fine fibers 7–2.4
Fine fibers 2.4–1
Microfibers 1–0.3
Super microfibers < 0.3