A Repository of Textile Articles

Textile Fiber Formulas

Commonly used fibre formulas and reference guides used by the textile fibre industry.

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Name Description
Micronaire value of cotton (Micrograms per inch) Average weight of 1 inch of fibre in Micrograms (1/1000,000 gms)
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 Conversion

Tenacity Conversions (Free 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

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