CMD Group

FIBRE	Density g/cm3	Tenacity gf/tex	Elongation at break %	Moisture Regain at 65% RH	Melting Point Degree Centigrade	Suitable and widely used dyes
ACETATE	1.32	13	24	6	230	Disperse, Basic, Azoic
ACRYLIC	1.16	20-30	20-28	1.5	Sticks at 235	Basic, Disperse
COTTON	1.52	35	7	7-8	decomposes	Direct, Azoic, Vat, Solubilised Vat, Sulphur, Reactive
NYLON 6	1.14	32-65	23-43	2.8-5.0	225	Acid, Basic, Direct, Reactive
NYLON 6,6	1.14	32-65	23-43	2.8-5.0	250	Disperse, Acid Mordant
POLYESTER	1.34 - 1.50	25-54	30-55	0.4	250	Disperse
SILK	1.32	40	23	10	decomposes	Acid, Basic, Acid Mordant, Direct, Vat, Solubilised Vat
TENCEL	1.5	37.7	13	11	NA	Sulphur
VISCOSE	1.46 - 1.54	20	20	13	decomposes	Direct, Azoic, Vat, Reactive, Solubilised Vat, Sulphur
WOOL	1.31	12	40	14	decomposes	Acid, Reactive, Acid Mordant, Basic, Direct, Vat

FIBRES FORMULAE
Micronaire value of cotton ( Micrograms per inch)	=Average weight of 1 inch of fibre in Micrograms ( 1/1000,000gms )
Denier( for man-made fibres )	=Weight in gms per 9000 metres of fibre
Micron ( micro-metre ) (μm)(fibre diameter) (normally for Wool)	=0.001 mm
Denier	= 0.354 x Micronaire value
Micronaire Value	=2.824 x Denier
Fibre diameter (μ)= 11.3 x √ ( dtex / sp.gr)=11.9 x √ ( den / sp.gr)
Tenacity values: Kg / mm2 = 9 x (g/den) x Sp.gr. = RKM value x Sp.gr. = ( g/tex ) x Sp.gr.

TENACITY CONVERSIONS (FIBRE STRENGTH )				g = gms
	g/den	g/tex	g/dtex	cN/tex
g/den =	1	(g/tex ) / 9	( g/dtex ) x 10 / 9	(cN/tex ) x 0.113
g/tex =	(g/den) x 9	1	(g/dtex) x 10	(cN/tex) x 1.02
g/dtex =	(g/den) x 0.9	(g/tex) / 10	1	(cN/tex) x 0.102
cN/tex =	(g/den) / 0.113	(g/tex) / 1.02	(g/dtex) / 0.102	1

PHYSICAL PROPERTIES OF FIBERS