What are the methods of determining yarn count?
The direct system is calculated with the formula N = (W/l) / (L/w). The indirect system uses the formula: N = (L/w) / (W/l). In these formulas, N is the yarn count, W is the weight of a sample of yarn, l is the unit of length, L is the length of the sample, and w is the unit of weight.
What is cotton yarn count?
Cotton Count is specifically a way of describing the size of spun fibers and yarns. Now let’s take a closer look at what that means. Cotton Count looks at one pound of the material and describes how many 840-yard lengths of spun fiber it contains. … For a spun yarn or thread, Cotton Count is the appropriate term.
What is NM yarn?
The Nm stands for ‘normal metric’ – which is based on 1 000 metres of yarn per kilogram. The first number refers to the number of strands plied together. The second number tells you how many hanks of 1 000 metre lengths of a single ply of the yarn would weigh one kilogram.
Which yarn count is finer?
The count of yarn expresses the number of length units in one weight unit. Thus higher the count, finer the yarn. The system is generally used for cotton, worsted, linen (wet spun), etc. Where, W = The weight of the sample.
What is direct count system?
The direct system or fixed length system is the yarn count system where the count of a yarn is calculated by measuring the mass of a fixed / definite length. In this system, the count of yarn is the number of weight units per length unit. Here, the count number indicates the mass per unit length.
Which count of cotton yarn is finest?
On 25 October 2008 finest yarn (350 Ne/ 592 Nm) ever spun 100% cotton has been produced on Pilot Spinning Mill, Spinning Research Department, Cotton Research Institute. Also, the old one, 334 Ne or 565 Nm was recorded by Messrs, TEXParts in Stuttgart, Germany.
How is quality of cotton measured?
Official USDA cotton quality classifications measure three factors: grade, staple, and micronaire (10). 1/ Grade depends on the color, trash content, and preparation (smoothness) of the sample. Staple is the average length of the individual fibers. Micronaire is a measure of fiber fineness and maturity.
What is the difference between NM and NE?
Systems under fixed weight: English Count (Ne) = Number of hanks of 840 yards/lb. Metric Count (Nm) = Number of hanks of 1000 metres/kg.
What does NM stand for in yarn count?
Most EU yarn millers now use the standard ‘new metric’ or NM count in which a count of 1 is a single strand of yarn (un-plied) that is 1000m long and weighs 1kg.