Cotton Count Calculations

Questions and Answers

What is the formula to calculate Cotton Count (NeC)?

8.33 x Length / Weight (correct)

Number of yards / 840

Number of grains x 840 / Number of yards

Number of grains / 7000

What is the unit of Weight (W) in the formula for Cotton Count (NeC)?

yards

pounds

hanks

grains (correct)

What is the equivalent of 1 lb in the formula for Worsted Count (NeW)?

1 hank

560 yards (correct)

7000 grains

840 yards

What is the unit of weight in the formula for Worsted Count (NeW)?

grains Signup and view all the answers

What is the value of Number of yards in the formula for Worsted Count (NeW), if Weight (W) is 7000 grains and Length (L) is 1 yard?

1 Signup and view all the answers

What is the unit of Length (L) in the formula for Cotton Count (NeC)?

yards Signup and view all the answers

What is the relationship between Number of hanks and Number of yards in the formula for Worsted Count (NeW)?

Number of hanks = Number of yards / 560 Signup and view all the answers

What is the unit of length in the formula for Worsted Count (NeW)?

yards Signup and view all the answers

What is the formula for Wool Count (Ny), given that Number of hanks is x and 1 pound is 453.592 grams?

x / 256 Signup and view all the answers

What is the purpose of the Cotton Count (NeC) and Worsted Count (NeW) formulas?

To measure the thickness of yarn Signup and view all the answers

If the Length (L) is 2 yards and the Weight (W) is 14000 grains, what is the Worsted Count (NeW)?

6.25 Signup and view all the answers

What is the value of Number of hanks in the formula for Wool Count (Ny), if Number of yards is 512 and 1 pound is 453.592 grams?

2 Signup and view all the answers

What is the unit weight of the known system in the Metric System?

453.6 g Signup and view all the answers

What is the value of LR in the given conversion?

1000 m Signup and view all the answers

What is the conversion factor from English to Metric system?

1.693 Signup and view all the answers

What is the unit length of the known system in the English system?

840 yds Signup and view all the answers

What is the value of WK in the given conversion?

1 lbs Signup and view all the answers

What is the result of converting 80 English Count into Metric Count?

135.44 Nm Signup and view all the answers

What is the relationship between Nm and Ne?

Nm = Ne x 1.693 Signup and view all the answers

What is the unit weight of the required system in the Metric system?

1 kg Signup and view all the answers

What is the primary characteristic of non-woven fabrics?

Bonded together by entangling fibres or filaments Signup and view all the answers

Which type of fabric is produced by matting, condensing, and pressing fibres together?

Felted fabric Signup and view all the answers

What is a characteristic of woven fabrics?

Dimensional stability is higher than knitted fabrics Signup and view all the answers

How are tufted fabrics made?

By combining foundation cloth and tufts Signup and view all the answers

What is a characteristic of braided fabrics?

A rope-like, diagonally overlapping pattern Signup and view all the answers

What percentage of fabrics are produced by weaving techniques in the textile sector?

48 % Signup and view all the answers

What is a difference between woven and knitted fabrics?

Woven fabrics require two sets of yarns, while knitted fabrics require one set Signup and view all the answers

What is an open work fabric made from intermeshing threads called?

Laced fabric Signup and view all the answers

What is the main objective of the warping process?

To collect large number of required yarns from the winding package onto the beam Signup and view all the answers

What type of warping deals with the same type of yarns?

High-speed warping Signup and view all the answers

What is the result of high-speed warping?

A single warper's beam contains a fraction of the total ends required Signup and view all the answers

What happens to the warper's beams after high-speed warping?

They are collected together later in the sizing process Signup and view all the answers

What is the purpose of sectional warping?

To collect yarns of different colours and types Signup and view all the answers

How many warper's beams would be required if 9000 warp yarns are required in a fabric and each warper's beam has 1000 yarns?

9 Signup and view all the answers

What type of warping is used for denim?

Ball warping Signup and view all the answers

What is the benefit of high-speed warping?

It allows for faster warping due to the use of same type of yarns Signup and view all the answers

Study Notes

Cotton Count (NeC)

Cotton Count (NeC) = Number of grains / 7000
Cotton Count (NeC) = Number of yards x 7000
Cotton Count (NeC) = Number of grains x 840 / Number of yards
Cotton Count (NeC) = 8.33 x Number of grains
Cotton Count (NeC) = 8.33 x Length / Weight
Where, Length (L) in yards and Weight (W) in grains

Worsted Count (NeW)

Worsted Count (NeW) = Number of hanks
Number of hanks = Number of yards / 560
Worsted Count (NeW) = Number of grains / 7000
Worsted Count (NeW) = Number of yards x 7000
Worsted Count (NeW) = Number of grains x 560 / Number of yards
Worsted Count (NeW) = 12.5 x Number of grains
Worsted Count (NeW) = 12.5 x Length / Weight
Where, Length (L) in yards and Weight (W) in grains

Conversion from Direct to Indirect System

LK = Unit length of known system = 840 yds
WR = Unit weight of required system = 1000 g
Nm = Ne x 1.693
Example: Convert 80 English Count into Metric Count, Nm = 80 x 1.693 = 135.44 Nm

Fabric Classification

Knitted Fabrics

Fabrics produced by transforming yarn into loops and intermeshing them with adjacent loops
One set of yarn is used
Final product: Warper’s beam/ball

Non-Woven Fabrics

Broadly defined as sheet or web structures bonded together by entangling fibres or filaments mechanically, thermally, or chemically

Bonded Fabrics

A non-woven fabric in which webs of fibres are held together by a bonding material

Felted Fabrics

Produced by matting, condensing, and pressing fibres together

Tufted Fabrics

Made by the combination of:
- Foundation Cloth
- Tufts

Braided Fabrics

A rope-like fabric made by interweaving three or more yarns in a diagonally overlapping pattern

Laced Fabrics

An open work fabric made from intermeshing threads into a fabric

Comparison between Different Fabrics

Woven Fabrics

Produced by the interlacement of two sets of yarns
Sizing is required before weaving
Yarn preparation is must
Production capacity is less than that of knitted fabrics
Production cost is higher
About 48% of fabrics are produced by weaving techniques
Elastic property is less than knitted fabrics
Dimensional stability is higher than knitted fabrics

Warping Process

Collects large number of required yarns from the winding package onto the beam
Different nature or different colours of yarns can be collected on the beam according to the required arrangement
Winding of a specific type of package as required by the subsequent process

Types of Warping Process or Warping Machines

High-speed (direct) warping
Sectional (indirect) warping
Ball (for denim) warping
Draw (heat set) warping

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Description

Calculate Cotton Count (NeC) using number of grains and yards. Practice problems and formulas to determine Cotton Count.