Yarn Count in Direct and Indirect System
Mustaque Ahammed
Quality Assurance Officer,
Lamisa Spinning Ltd. Tongi, Gazipur
Cell: +8801723300703
Email: mamuntex09@gmail.com
Mustaque Ahammed
Quality Assurance Officer,
Lamisa Spinning Ltd. Tongi, Gazipur
Cell: +8801723300703
Email: mamuntex09@gmail.com
Yarn Count:
We can define yarn count as the coarseness or fineness of yarn. It is just a numerical expression. There are main two types of yarn count measuring system. One is direct count and another is indirect count system.
We can measure the yarn count from the following formula:
590.5 x 16.1
Yarn Count = ……………………..
S.L. x Grey G.S.M.
Standard yarn count measuring table:
In this system the yarn count express the number of length in one weight unit. That means Weight Unit is fixed & Length Unit is variable here.
By the following formula yarn count is expressed in indirect system:
w x L
Indirect count: Ne = …………
W X l
Where,
W = The weight of the sample.
w = The unit weight of the system.
L = The length of the sample.
l = The unit length of the sample.
Following table will be helpful for you:
System

Unit weight

Unit length

Uses

English (Ne)

1 lb

840 yds

Cotton yarn

Metric (Nm)

1 kg

1 km

Cotton yarn

Worsted

1 lb

560 yds

Worsted yarn

Woolen

1 lb

256 yds

Woolen yarn

The weight of a fixed length of yarn is determined. The weight per unit length is the yarn count. The common features of aII direct count systems are the length of yarn is fixed and the weight of yarn varies according to its fineness.
The following formula is used to calculate the yarn count:
W X l
Direct count: Nm = …………
w X L
Where,
N = The yarn number or, count.
W = The weight of the sample.
w = The unit weight of the sample.
L = The length of the sample.
l = The unit length of the sample.
Following table will be helpful for you:
System

Unit weight

Unit length

Uses

Tex

Grams

1,000m

Polyester

Denier

Grams

9,000m

Lycra

DTex

Grams

10,000m

Lycra

Pounds/Spyndle

Pounds

14400yds

Jute

Very effective article for textile engineers. Thanks for sharing. hope you will continue this type of article more and more....
ReplyDeleteYour article are very impotent for beginners. Wish such article form you again.
ReplyDeleteVery helpfull thanks for sharing
ReplyDeleteJazak Allah
Very helpfull thanks for sharing
ReplyDeleteJazak Allah