Page 68 - Shawl Weaving Artisan - TT

Questions Where,
A Calculate the tex-count of nylon yarn, if the length of N = Yarn count or number system
yarn is 20000 yards & its weight is 400 gram’s.
W = Weight of the sample at the official regain in the
Answer units of the system
1 yard = 0.9144 meter L = Length of the sample
1000 x Weight in gram’s L = Units of length of sample
Tex =
Length in meter’s W = Units of weight of sample
1000 x 400
Tex = Numbering system Units of Units of
20000 x 0.9144 length (l) weight (w)
English cotton count 840 yards 1 pound (lb.)
Tex = 21.87 (Ne) Length in yards
2 Denier Metric count (Nm) 1000 meters / 1 kg
840 x Weight in lbs
In the direct denier system, the yarn count number 1km
indicates the weight in grams of 9000 meters of yarn. Woolen count 256 yards 1 pound (lb.)
9000 x Weight in grams (YSM)
Denier = Worsted count 560 yards 1 pound (lb.)
Length in meter
French cotton count 1000 meters 500 grams
Example: 30 Denier indicates that 9000 meters of yarn Linen count 300 yards 1 pound (lb.)
weight 30 grams.
1 English cotton count (Ne): This also known as
Questions British count or English count. This defined as the
A The yarn of polyester filament weighing 50 grams in number of hanks each of 840 yards weighing in one
6000 meter length calculate the Denier of the yarn. pound of the yarn.
Answer Length in yards
English cotton count (Ne) =
9000 x Weight in grams 840 x Weight in lbs
Denier =
Length in meter Example
9000 x 50 A 30/1 cotton (1 means single yarn) indices that 30 x
Denier = 840 yards of yarn weight 1 pound.
6000
B 40/2 cotton (2 means ply yarn) indicates that 20
Denier = 75. (Resultant count) x 840 yards of yarn weight 1 pound.
2 Indirect yarn numbering system [length/unit Questions
mass]
A A yarn having length of 90,000 yards and its weight
Indirect yarn numbering system also known as length per in 2 pounds calculate its English count.
unit mass of yarn. Hence in this system higher the yarn
number or count indicates the finer or lighter the yarn Answer:
size and smaller the yarn number or count indicates the Length in yards
coarser or thicker the yarn size. This system is generally English cotton count (Ne) = 840 x Weight in lbs
used for English cotton count, Worsted count, Linen 90,000
count, Woollen count, French cotton count and metric Ne =
count. As compared to direct yarn numbering system this 840 x 2
system is very easy to calculate weight of the fabric, when English cotton count (Ne) = 53.57
the count of warp and weft are expressed in this system.
The amount of twist in the yarn and cloth setting (threads 2 Worsted count (Nm)
per inch) are directly proportionally to the square root of It is defined as the no. of hanks each of 560 yards
yarn count and very difficult to calculate. The count does weighing in one pound of the yarn.
not express the size of the yarn directly. And a coarser
or bulky yarn will have a small count number than a finer Length in yards
or less bulky yarn. And it is very difficult to calculate the Worsted count (Nm) = 560 x Weight in lbs
resultant count of the folded yarn in this system, when Example
the component threads are different counts.
A 1/20 worsted cotton indicates that 20 × 560 yards of
The following formula is used to calculate the indirect yarn 1 pound.
yarn count
B 3/40 worsted cotton indicates that 13.33 (Resultant
N = (L × w)/ W ×l count) × 560 yards of yarn.

58 Textile & Handloom: Shawl Weaving Artisan : (NSQF - 2024) R.T. Ex.No 1.4.36&37