The concept of yarn count density
Fabrics vary widely, how to express different specifications? Yarn count density is an important indicator.
Yarn count: Generally, what you come into contact with is English count. The specific definition is: the calculation of the British count of cotton yarn: how many 840 yards of cotton yarn with a common weight of one pound are called several British counts. For example, if it contains 32 pieces of 840 yards, it is called 32 English counts, and so on, the higher the count, the finer the yarn. British branch is generally represented by s.
At the same time, there is an index of Daniel to indicate the thickness of the fiber. He is the opposite of the English branch. The higher the fiber, the thicker it is. The specific definition is: fixed length 9000 m, weight 1 g = 1 D, if the fiber 9000 meters long weighs 70 grams, Then it is 70D. Converted to English branch, it is 76s
Daniel is generally used to describe finer fibers, such as nylon, polyester, spandex, etc.
Density: The number of warp and weft yarns per inch is called density. We have a density mirror, the size of the box is 1", and the density is as many as you count.
For example: 20x16/128x60, which means that the warp yarn is 20s, the weft yarn is 16s, and there are 128 warp yarns and 68 weft yarns per inch. This is just the most basic fabric, and there are many more complex fabrics, and the method of expressing the yarn count density is correspondingly more complicated.
Generally speaking, the density of non-elastic fabrics refers to the yarn count density of gray fabrics, and the density of finished products will change accordingly. The gray fabric width of most non-elastic fabrics is 47” or 63”, and their finished width is 44” or 58” respectively. Take 128x60/20x16 as an example, 47” x 128/44”=136. So this fabric The final warp density of the finished product should be around 136. The weft yarn density basically does not change before and after the finished product, at most 1-2.
The gray cloth will lose some weight through layers of treatment during the dyeing and finishing process, so the yarn count of the finished product will be 1-2 finer than that of the gray cloth. Be aware when testing.
Elastic cloth generally refers to the density of the finished product.