1. Definition of yarn count
Yarn count is the thickness of yarn, and its representation methods include S, D, N, Tex, Dtex, etc. . Specific fabrics use specific specifications, of which S and D are more commonly used. In the scientific literature, tex is generally converted.
1. S is the inch count, it refers to the yarn weighing one pound under the specified moisture regain, and its length has several 840 yards, which is called several yarns. Generally, the yarn count of staple fiber is represented by S, and the staple fiber is represented by Staple in English. The thicker the yarn, the smaller the S value; the finer the yarn, the larger the S value. For example, the yarn count of 40S is finer than that of 20S.
2. D is the abbreviation of Denier, which is a method of expressing the fineness of chemical fibers, which refers to the weight in grams of 9000-meter-long silk at a given moisture regain. Generally, the count of filament is represented by D, and the filament is represented as Filament in English. The larger the D, the thicker the 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 weight in grams of a 1000-meter-long yarn at a given moisture regain.
4, dtex decitex, referred to as decitex, refers to the grams of fiber bundles 10,000 meters long.
2. What is the calculation formula of yarn count
1. The calculation formula of custom length system:
(1) Denier (D) = g/L*9000, where g is the weight of the thread (grams), and L is the length of the thread (m).
(2) tex (number) [tex (H)]: tex=g/L*1000, where g is the weight of the yarn (or silk) (g), and L is the yarn ( or wire) length (m).
(3) Decitex (dtex): dtex=g/L*9000, where g is the weight of the wire (g), and L is the length of the wire (m).
2. Calculation formula for custom weight system:
(1) Metric count (N): N=L/G, where G is yarn ( or silk) weight (grams), L is the length (m) of the yarn (or silk).
(2) Inch count (S): S=L/(G*840), where G is the weight of the wire (pounds), and L is the length of the wire (yards).
3. Select the conversion formula:
(1) Conversion formula of metric count (N) and denier (D) = 9000/N .
(2) Conversion formula of imperial count (S) and denier (D) = 5315/S.
(3) The conversion formula between dtex (dtex) and tex (tex): 1tex=10dtex.
(4) Conversion formula of tex (tex) and denier (D): tex=D/9.
(5) Conversion formula of tex (tex) and imperial count (S): tex=K/SK value: pure cotton yarn K=583.1, purified fiber K=590.5, polyester cotton yarn K =587.6, cotton viscose yarn (75:25) K=584.8, dimensional cotton yarn (50:50) K=587.0.
(6) Conversion formula between tex (tex) and metric number (N): tex=1000/N.
(7) The conversion formula of dtex (dtex) and denier (D): dtex=10D/9.
(8) Conversion formula of dtex (dtex) and imperial count (S): dtex=10K/SK value: pure cotton yarn K=583.1, purified fiber K=590.5, polyester-cotton yarn K =587.6, cotton viscose yarn (75:25) K=584.8, dimensional cotton yarn (50:50) K=587.0.
(9) Conversion formula between dtex (dtex) and metric count (N): dtex=10000/N.
