Effect of fibre profile, spin finish and opening roller speed on properties of polyester OE rotor-spun yarns

摘要

The influence of fibre profile, spin finish and opening roller speed on quality of polyester OE rotor-spun yarns has been studied. The spin finish and opening roller interact with each other to determine yarn properties. This is because the inter-fibre friction, which depends to a large extent on the combined influence of fibre structural variants and spin finish, plays an important role in influencing fibre separation by opening roller. It is observed that the yarns made from a trilobal fibre are inferior to the yarns made from a circular fibre spun under the same condition in terms of tenacity, breaking extension, work of rupture, hairiness and regularity. The yarn tensile properties generally show a descending trend with increasing opening roller speed. The drop in tensile properties, however, depends on the level of add-on finish. The yarn regularity is also highly dependent on the add-on finish and opening roller speed. The yarns produced with higher opening roller speed show lower unevenness and fewer imperfections, particularly at higher level of add-on finish.