Correlation Between cotton and cotton yarn

The most important fiber quality is Fiber Length:

Staple classification. Length mm Length inches Spinning Count
Short Less than 24 15/16 - 1 Coarse Below 20
Medium 24 - 28 1.1/132-1.3/32 Medium Count 20s-34s
Long 28 - 34 1.3/32 -1.3/8 Fine Count 34s - 60s
Extra Long Y - 1 1.3/8 -1.9/16 Superfine Count 80s - 140s

Notes:

  • Length is measured by hand stapling or Fibro graph for 2.5% Span Length.
  • 50% SL means at least 50% of total fibers have length exceeding this value.
  • 2.5%SL (Spun Length) means at least 2.5% of total fibers have length exceeding this value.
  • Spinning Count does not depend on staple length only. It also depends on fineness and processing machinery.

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