Studies on Tensile Behaviour and Uniformity of Jute Plied Yarn

Jute plied yarns are primarily used as sewing twine for sacks, apart from their other uses in carpet,geotextiles, etc. Though tensile behaviour and uniformity are the two most important properties of jute-plied yarns, studies on the factors that influence these properties are not available. In the present work,the authors studied the influence of the number of plies, single yarn twist factor and ply to single yarntwist ratio on tenacity and breaking extension of jute plied yarn. It is observed that with increase in thenumber of plies, the optimum tenacity of jute plied yarn is achieved at comparatively lower ply to singletwist ratio. They also noticed that breaking extension of jute ply yarn increases with increase in thenumber of plies as well as ply to single twist ratio. While studying the irregularity of jute plied yarn,they observed that plying improves jute yarn regularity and maximum improvement is observed in 4-plyyarn followed by 3-ply and 2-ply.