Influence of fibre cross-sectional shape on dye uptake and mechanical properties of polyester OE rotor-spun yams

Fibre profile plays an important role in OE rotor spinning. The yams made from a trilobal fibre perform no better than the yams made from a circular fibre in respect of twist deviation, tensile parameters and mass irregularity. The yam hairiness is a more serious problem with circular fibres. The spinning of rotor yams with a low twist factor and rotor speed produces yarns within the acceptable hairiness limit. Yams with trilobal fibres pick up more dye than the yams with circular Fibres. The dye uptake decreases with the increase in tex twist factor but the decrease in the uptake of dye reduces with the decrease in polyester fibre denier.