ABSTRACT
Most of the textile winding operations deal with the conversion of ringframe bobbins into cones or cheeses. One ringframe bobbin (cop) typically contains around 100 g of yarn. If the yarn count is 20 tex, then the length of yarn in the package will be around 5 km. As the warping speed in
modern machines is around 1000 m/min, direct use of ringframe bobbins in warping will necessitate supply package change aer every 5 min. is will reduce the running eciency of warping machine. Besides, there will be a large number of yarn breaks during warping as the yarn in ringframe bobbin contains many thin and weak places. erefore, ringframe bobbins are converted into bigger cones (mass around 2 kg or more) or cheeses.
