Studies in the properties of jute and hollow polyester blended bulked yarns

In trails conducted during two Autumn seasons of 2007–09 at Mechanical processing laboratory of National Institute of Research on Jute & Allied fibre Techonology, Kolkata (W. Bengal) the physical and mechanical behaviour of the jute and hollow polyester (80:20) blended single, 2-ply and 3-ply yarns were studied. Alkali treatment, Bleaching and dyeing chemical processes were used to develop 2-ply and 3-ply bulked yarns. The yarn shrinkage and weight loss were also studied after bleaching and dyeing and then compared with the raw state. Chemically treated 3-ply yarns showed better physical and mechanical properties than to 2-ply yarn. This bulk yarn was further compared with the commercially available similar type of bulk yarns made up of acrylic and wool. The developed bulk yarn had higher bulk than other similar category of yarns but with inferior mechanical properties. Jute and polyester blended bulked yarn showed lower coefficient of friction than wool yarn. The specific flexural rigidity also followed a similar trend.