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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Technical Parameters of a PolyCot Saree

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