Texturing of Polyester-Viscose Blended Yarn by Batch and Continuous Processes

Abstract

Union-setting (combined heat-setting and resin-curing) of polyester-viscose blended yarns of varying blend ratios (20/80, 50/50, 65/35, and 80/20) was studied for producing textured yarn by batch (twist-set-detwist) and continuous (false-twist) methods. Basic aluminum chloride and magnesium dihydrogen phosphate were used as catalysts for the setting of the viscose component by dimethyloldihydroxyethylene urea. In the batch process an increase in the curing time from 2.5 to 30 seconds marginally increases the extent of resin fixation with no concommitant increase in the crimp rigidity.The crimp rigidity, however, increases with increase in the polyester component in the blend. The ratios of wet/dry retractability and wet/dry tenacity are maximum in 65/35 polyester-viscose blended yarn. Continuous false-twist texturization of blended yarn with simultaneous setting of both the components was possible even with a residence time of 1 second in the heater.

Simultaneous Dyeing and Texturing of Polyester/Viscose Blended Yarn

“…The light and wash fastness properties were estimated as per the ISO recommendations. The mechanical properties and the crimp rigidity of the textured samples were determined by processes described elsewhere [2]. ' …”

Characterizing a novel method for blending regenerated cellulose structures with polyester filaments

“…1 Polyester/rayon blended yarns exhibit a high strength and good elasticity. [3][4][5][6] The blending process of regenerated cellulose and polyester fibers, done to achieve better properties, is very expensive in the spinning process. 1 Polyester blends with cellulosic fibers are used mainly in the production of shirting, dress goods, light suit fabrics, and coated fabrics.…”

“…They show very good crease resistance and drape compared to pure linen fabrics. 3,4 However, during the 20th century, there have been many attempts to investigate the special properties of these blended yarns. The cellulosic component is most often cotton and rayon staple and, less frequently, flax.…”