Theoretical evaluation of warp tension variations during weaving process

Abstract

The relationship between the ratio of the applied force on warp yarn by backrest roller to the warp tension, and the radius of backrest roller, the vertical position of backrest roller and the horizontal position of backrest roller with variations in warp beam radius during weaving process has been studied. The optimum values of the parameters have been calculated using a computer programme with the aim to minimize the variation in warp yarn tension during weaving process from full to empty warp beam. The results show that the increase in vertical distance between backrest roller and warp beam radius of backrest roller and horizontal distance between backrest and warp beam towards inner side causes lower variation in the ratio of force applied on warp sheet by backrest roller and warp tension during weaving