How to find the Number of Ends in a fabric when weight, count and Length of Warp is Given

How to find the Number of Ends in a fabric when weight, count and Length of Warp is Given

This calculation is taken from "Textile Calculations" by Ashenhurst

For cotton

Multiply the weight of the yarn in lbs x Yarn count x 840)/yards of warp required

Change 840 to appropriate systems for other fibers.

eg. It is desired to make 3 kg of 40s cotton into a warp 56 meters long, how many ends will it contain:

1 kg = 2.2 lbs
1 m = 1.09 yards

So the number of ends that it will contain is

(3 x 2.2 x 40 x 840)/(56 x 1.09)= 3633 ends.



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Fiber - Specific Gravity

Fiber	Specific Gravity
Acetate Rayon	1.30-1.33
Acrylic	1.14-1.18
PVC	1.38-1.70
Glass Fiber	2.50
Modacrylic	1.31-1.37
Nylon	1.10-1.14
Polyester	1.22-1.38
Polyolefin	0.90-0.95
Cupramommum Rayon	1.52
Viscose Rayon	1.52
Carbon High Modulus	1.77
Carbon Ultra High Mod	1.96
Alpaca	1.31
Angora Rabbit fur	1.10
Camel Hair	1.31
Cashmere	1.31
Cotton- Solid Fiber	1.54
Cotton Overall fiber	1.35
Linen	1.50
Flax	1.50
Hemp	1.50
Jute	1.50
Mink	1.26
Mohair	1.31
Musk Rat	1.26
Rabbit-Common	0.92
Ramie	1.55
Silk Weighted	>1.60
Silk- B. Mori (Raw)	1.33
Asbestor	2.1-2.8
Silk- Tussar	1.32
Wool ( non-modullated)	1.31

Dimensions of Some Animal and Vegetable Textile Fibers

Source: Handbook of Textile Technical Data - TIT&S Bhiwani

Is Crepe Fabric made up of Polyester ?

This is a question which has been asked by many of my readers and many forms.

The explanation lies in the difference between fabric and fiber of which it is made of. So Crepe fabric can be made of cotton, viscose or polyester depending upon the end use. Here crepe is a form of weave, which can be done on any of the fibers.

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