Analyses on fiber radial distributions of polyester / cotton blended yarn in complete condensing spinning

In order to study the fiber radial distribution of blended yarn in complete condensing spinning,28. 1 tex polyester / cotton blended yarn was spun by three methods of ring spinning,lattice apron compact spinning and complete condensing spinning,respectively. The three kinds of blended yarn samples were cut by a Harrington slicer. MOTTC B1 microscope was adopted to observe and collecting distribution conditions of two kinds of fibers in samples,and analyzed in combined with the Hamilton Migration Index method to acquire the internal and external migration trends and distribution rules of fibers in the yarn sections of polyester / cotton blended yarns in complete condensing spinning and cotton fibers. The results showed that in the polyester / cotton blended yarns spun by conventional ring spinning,polyester fibers had obvious trend to transfer towards the yarn core,and in lattice apron compact spinning,trend of polyester fibers to transfer to the yarn core is weaker than that of conventional ring spinning,and compared with ring spinning, the complete condensing spinning has more random distribution of polyester fibers,and the polyester fibers has a trend to transfer towards outside.