The Impact of Warping Mistakes on Forming Fabric Selvedges

Abstract

The impact of improperly wound warp ends on warp beam are investigated. The causes of mistakes in winding the ends on the warp beam in sectional warping are listed, as well as the means of preventing these mistakes. The tension in warp yarns at the warp beam flanges is measured on working looms. It is established that rising or lowering the tension in unwinding from the point of mistake on a warp beam results in a mistake on fabric selvedges, in the form of small fringes. Lower tension than average results in shorter fringes, broader fabric and improper shedding, which means higher incidence of yarn breakage. Higher tension causes longer fringes, narrower fabric and higher incidence of yarn breakage in the respective group of warp yarns.