Yarn fineness index
Many people have misunderstandings or understanding of “Yarn fineness index“. Next, let me take you with me to share with your friends and explore more about “Yarn.” Knowledge of “fineness index“…
1. British count (Ne) – under the public tide rate, the multiple of 840 yards of the length of 1 pound of heavy-spun yarn, that is to say, 1 pound of heavy-spun yarn is exactly 840 yards long, which is 1 yarn, 1 The length of pound-weight spun yarn is 21×840 yards long, and the fineness of spun yarn is 21 counts, written as 21s. The imperial count is a fixed weight system, so the larger the count, the finer the yarn. The British count is not the current legal spinning yarn fineness index in my country, but it is still widely used in enterprises, especially in the cotton textile industry.
2. Metric count (Nm) – under the public tide return rate, 1 weight per square meter of spinning yarn length is a multiple of meters, that is to say 1 weight per square meter of spinning yarn is exactly 1 meter long, which is 1 (metric ) yarn count, 1 weight per square meter, the length of the spinning yarn is 200 meters long, and the fineness of the spinning yarn is 200 counts. Metric count is also a fixed weight system, so the larger the count, the finer the yarn. It is used in cotton textile, woolen textile industry.
3. Tex number – also known as “number”, refers to the number of grams of a 1000-meter-long spinning yarn under the public moisture return rate. It is a fixed-length unit. The greater the weight per square meter. The thicker the spinning yarn, the more often used it is to represent woolen yarn.
4. Fineness (D) – also known as “denier” or (denier), refers to the number of grams of weight of 9000 meters of spinning yarn or fiber under the public tide return rate. It is also a fixed The unit of length. The greater the weight per square meter, the thicker the yarn or fiber. It is often used to represent chemical fiber filaments, silk, etc.
Since the fiber filaments and spinning yarns are irregular in shape, and there is hairiness (short fiber hairs protruding) on the surface of the spinning yarns, we cannot use diameter to express its fineness, so textile workers use the above indicators.
Spinning yarn fineness index calculation formula and conversion relationship
Ne=spinning yarn length/(840*spinning yarn weight pounds)
Nm=fiber or yarn length in meters/weight in grams
Ntex=(1000*fiber or yarn weight in grams)/length in meters
Nden=(9000*fiber or yarn weight in grams)/length in meters
Conversion relationship: Nm=9000/Nden
Ntex=1000/Nm
Ntex=Nden/9
Ntex=583/Ne (cotton material); Ntex=590.5/Ne (chemical fiber) AAA57865ERT34GSD
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