Commonly used fibre formulas and reference guides used by the textile fibre industry.
| 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
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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 |
Could you please define some terms here? What is a “tex” and what are the units? Conversion to standard SI units (Newtons, grams, etc) would be very helpful.
Tex is the number of grams per 1000 meters of yarn.