First, the definition of yarn count
Yarn count is the thickness of the yarn, its expression methods are S, D, N, Tex, Dtex and so on. Specific fabrics are used with specific specifications, of which S and D are more commonly used. The technical literature generally converts tex.
1, S is the British count, it refers to the common moisture recovery rate, the weight of a pound of yarn, its length of several 840 yards, called several yarns. In general, the yarn count of Staple fiber is denoted by S, and the staple fiber is denoted as staple in English. The thicker the yarn, the smaller the S value; The thinner the yarn, the larger the S value, for example, the yarn count of 40S is thinner than 20S.
2, D is the abbreviation of Denier (Daniel), is a fineness representation of chemical fibers, refers to the weight of 9000 meters of silk at a fixed moisture return rate in grams. Generally, the number of Filament is represented by D, and the filament is expressed as filament in English. A larger D indicates a thicker yarn, for example, 75D is thicker than 50D
3, Tex Tex, also known as "number", referred to as special, formerly known as public branch. It refers to the number of grams of weight of 1000 meters of yarn at a common moisture regain.
4, dtex, referred to as fen, refers to the number of grams of 10,000 meters long fiber bundle.
Second, what is the calculation formula of yarn count
1, fixed length system calculation formula:
(1) Denier (D) =g/L*9000, where g is the weight of the silk thread (g), L is the length of the silk thread (m).
(2) tex (number) [tex (H)] : tex=g/L*1000, where g is the weight of the yarn (or silk) (grams), L is the length of the yarn (or silk) (meters).
(3) Divided Tex (dtex) : dtex=g/L*9000, where g is the weight of the thread (g), L is the length of the thread (m).
2. Calculation formula of fixed weight system:
(1) Metric count (N) : N=L/G, where G is the weight of the yarn (or silk) (in grams) and L is the length of the yarn (or silk) (in meters).
(2) Imperial count (S) : S=L/ (G*840), where G is the weight of the silk (pounds), L is the length of the silk (yards).
3. Select the conversion formula:
(1) The conversion formula of metric count (N) and Denier (D) =9000/N.
(2) The conversion formula of imperial count (S) and Denier (D) =5315/S.
(3) The conversion formula of tex and Tex is 1tex=10dtex.
(4) The conversion formula of tex and Denier (D): tex=D/9.
(5) tex and imperial count (S) conversion formula: tex=K/SK value: pure cotton yarn K=583.1, pure chemical fiber K=590.5, polyester cotton yarn K=587.6, cotton adhesive yarn (75:25) K=584.8, cotton yarn (50:50) K=587.0.
(6) The conversion formula of tex and metric number (N): tex=1000/N.
(7) Conversion formula of minute Tex (dtex) and Denier (D): dtex=10D/9.
(8) Conversion formula of dtex and imperial count (S): dtex=10K/SK value: pure cotton yarn K=583.1 pure chemical fiber K=590.5, polyester cotton yarn K=587.6, cotton adhesive yarn (75:25) K=584.8, cotton yarn (50:50) K=587.0.
(9) Conversion formula of Tex (dtex) and metric count (N): dtex=10000/N.
