Conversion between textile yarn fineness indicators

Yarn fineness is an index used to measure the thickness of yarn. There are two calculation formulas commonly used in textiles: fixed-length calculation formula and fixed-weight calculation formula. Fixed-length calculation formula:

1. Tex number – also known as “number”, refers to the number of grams of weight of a 1000-meter-long yarn at a public moisture regain. It is a fixed-length unit. The greater the gram weight of the yarn. The thicker it is, the more commonly used it is to represent wool yarn.

2. Denier (D) – also known as “denier” or (denier), refers to the number of grams of weight of 9000 meters of yarn or fiber at a public moisture regain rate , it is also a fixed-length unit. The larger the weight, the thicker the yarn or fiber. It is often used to represent chemical fiber filaments, real silk, etc.

3. Dectex (dtex) – referred to as decitex, the symbol is tex, which refers to the number of decigrams of the weight of a 1000-meter-long yarn at a common moisture regain, dtex=dg/L* 1000, where dg is the weight of the yarn (or silk) (in decigrams), and L is the length of the yarn (or silk) (in meters). It is a fixed-length unit. The larger the weight, the thicker the yarn. It is often used to represent fiber yarn.

Fixed weight calculation formula:

1. Imperial count (Ne) – under the public moisture regain, the multiple of 840 yards of the length of 1 pound yarn, that is It is said that 1 pound of yarn is exactly 840 yards long, which is 1 count of yarn. The length of 1 pound of yarn is 21×840 yards long. The fineness of the yarn is 21 counts, which is written as 21s. The imperial count is a fixed weight system, so the larger the count, the thinner the yarn. The British count is not the legal yarn fineness index in my country today, but it is still widely used in enterprises, especially in the cotton textile industry.

2. Metric count (Nm) – under the public moisture regain, the multiple of meters of the length of 1-gram yarn, that is to say, 1-gram yarn is exactly 1 meter long, which is 1 (metric ) count yarn, the length of yarn weighing 1 gram is 200 meters long, and the fineness of the yarn is 200. Metric count is also a fixed weight system, so the larger the count, the thinner the yarn. It is used in both cotton and wool textile industries.

Fixed-length and fixed-weight unit conversion formula:

(1) Conversion formula for metric count (Nm) and denier (D): D=9000/ Nm

　(2). Conversion formula for imperial count (S) and denier (D): D=5315/S

　(3), decitex (dtex ) and special The conversion formula of tex (tex): 1tex=10dtex

(4) The conversion formula of tex (Tex) and denier (D): Tex=D/9

(5) The conversion formula between Tex and British count (S): Tex=K/SK value: pure cotton yarn K=583.1 pure fiber K=590.5 polyester-cotton yarn K=587.6Cotton viscose yarn (75:25)K=584.8 dimensional cotton yarn (50:50)K=587.0

　(6). The conversion formula between Tex (Tex) and metric number (N): Tex= 1000/N

(7) Conversion formula between decitex (dtex) and denier (D): dtex=10D/ 9

(8) The conversion formula between decitex (dtex) and imperial count (S): dtex=10K/SK value: pure cotton yarn K=583.1 pure fiber K=590.5 polyester Cotton yarn K=587.6 Cotton viscose yarn (75:25) K=584.8 Wei cotton yarn (50:50) K=587.0

(9) The conversion formula between decitex (dtex) and metric count (N): dtex=10000/N International textile common unit 1 meter = 1.0936 yards

1 yard=0.9144 meters

1 kilogram=2.2046 pounds

1 pound=0.4536 kilograms

1 meter = 39.37 inches

1 inch = 0.0254 meters

1 stick (imperial) = 840 yards

1 stick (metric) = 1000 meters

1 public branch=1.69 British branch

1 British branch=0.583 public branch