A study on wrap-spun jute yarn with cellulosic yarn as wrapping element

Abstract

Using the hollow-spindle technology, the wrap-spun jute yarns having linear densities of 276, 190 and 120 tex and varying wrap density (250-450 wraps/m) were produced with 2-ply cotton as wrapping yarn. Wrap-spun jute yarn of 276 tex was also spun using viscose rayon multifilament as wrapping yarn. The yarns with 450 wraps/m could not be spun due to

excessive breakage in case of 276 tex linear density. Tensile strength of 276 tex and 190 tex wrap-spun jute yarn decreased with the increase in wraps/m. However, for finer yarns of 120 tex, the trend was erratic. The load-elongation curves of wrap-spun jute yarns having higher wrap densities manifested staggered multi-peak type fracture whereas the rupture was

catastrophic (uni-pick type) when the wrap density was lower. The breaking elongation of all the yarns generally increased with the increase in wrap density. Wrap-spun jute yarns were comparatively better in appearance than the conventional all-jute yarns.