Step 1: Formula for Twist Multiplier (TM). The twist multiplier (TM) is calculated using the formula: \[ TM = \frac{{TPI}}{\sqrt{{Yarn Count}}} \] Where: - TPI is the twist per inch (given as 15 tpi), - Yarn Count is given in Ne (36 Ne).
Step 2: Calculating the Twist Multiplier. Substituting the given values: \[ TM = \frac{15}{\sqrt{36}} = \frac{15}{6} = 2.5 \] Step 3: Conclusion. Thus, the twist multiplier (TM) of the yarn is \( \boxed{2.5} \).
| Group I | Group II |
| P. Rotor spinning | 1. Twistless parallel fibres in core and helically arranged filament on surface |
| Q. Air-jet spinning | 2. Helically twisted core and distinct wrappers on surface |
| R. Wrap spinning | 3. Multifilament core covered by staple fibres stuck to molten polymer |
| S. Bobtex spinning | 4. Twistless core wrapped regularly and helically by thin fibre ribbons |