ii. Yarn

Yarn Numbering System(Yarn Count)

Yarn count is a numerical value that quantifies the thickness or fineness of a yarn. It essentially represents the relationship between the length and weight of the yarn, indicating the amount of yarn per unit weight or the weight per unit length.

Types of Yarn Count Systems

There are two primary systems for measuring yarn count:

Direct Count Systems

In these systems, a fixed length of yarn is weighed, and the count is determined by the weight per unit length. Common direct count systems include:

  • Tex: The weight in grams of 1000 meters of yarn.
  • Denier: The weight in grams of 9000 meters of yarn.
  • DeciTex: The weight in grams of 10,000 meters of yarn.
  • Millitex: The weight in milligrams of 1000 meters of yarn.
  • Kilotex: The weight in kilograms of 1000 meters of yarn.
  • Jute count: The weight in pounds of 14,400 yards of yarn.

Formula for Direct Count Systems:

Count = Weight / Length

Indirect Count Systems

In these systems, a fixed weight of yarn is measured, and the count is determined by the length per unit weight. Common indirect count systems include:

  • English cotton count (Ne): The number of 840-yard lengths per pound.
  • Metric count (Nm): The number of kilometers per kilogram.
  • Woollen count (YSW): The number of 256-yard lengths per pound.
  • Woollen count (Dewsbury): The number of yard lengths per ounce.
  • Worsted count (NeK): The number of 560-yard lengths per pound.
  • Linen count (Nel): The number of 300-yard lengths per pound.

Formula for Indirect Count Systems:

Count = Length / Weight

Conversion Factors:

  • 1 yard = 0.9144 meters
  • 1 meter = 1.0936 yards
  • 1 meter = 39.37 inches
  • 1 gram = 0.0353 ounces
  • 1 ounce = 28.350 grams
  • 1 pound = 453.6 grams
  • 1 kilogram = 2.2046 pounds

Key Points:

  • A higher yarn count generally indicates a finer (thinner) yarn, while a lower count indicates a coarser (thicker) yarn.
  • The specific system used depends on the type of yarn and industry standards.
  • Understanding yarn count is essential for various textile applications, including knitting, weaving, and garment manufacturing.

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