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Influence of Spinning Parameters on Polyester/Polyester and Polyester/Viscose DREF-3 Yarns Tensile Properties

Research and development

BRAK AUTORA
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Abstract:

In this study, polyester staple fiber core/polyester sheath and polyester staple fiber core/viscose sheath DREF-3 core yarns were produced using different spinning parameters in order to understand their effect on yarn tensile properties. Yarns of 65 tex linear density were produced using three different core/sheath ratio levels × four different spinning drum speeds × three different air suction pressures at a constant opening roller speed of 4200 r.p.m and constant production speed of 100 m/min. The tensile properties of the yarns were tested, and the results obtained were evaluated by regression analysis using an SPSS statistical program at a 0.05 significance level. The effect of the core/sheath ratio on yarn tenacity and yarn elongation at break properties are significant. With an increase in the core/sheath ratio, yarn tenacity decreases due to insufficient wrapper fibers in the yarn. An increase in the core ratio decreases yarn elongation because sheath fibers are in a buckling form, helically wound in the yarn structure, in which there is more chance for yarn extension. An increase in the spinning drum speed damages fiber in the sheath and increases the number of hooks at the end of fibers, as a result of which the core yarn tenacity decreases. However, an increase in the spinning drum speed does not have a significant effect on the yarn elongation at elongation at breakratio. At a higher air suction pressure, Polyester/viscose yarn tenacity and the elongation at break ratio increase. On the other hand, the air suction pressure does not have a significant effect on the tensile properties of polyester/polyester yarns. It appears that the effect of air suction pressure changes according to the physical properties of fiber in the sheath. The air suction pressure may only have a significant effect on yarn tensile properties when short and coarse fibers are used in the sheath.

Tags: DREF-3 friction spinning, core yarn, spinning parameters, yarn tensile properties.

Citation: Altaş S.; Influence of Spinning Parameters on Polyester/Polyester and Polyester/Viscose DREF-3 Yarns Tensile Properties. FIBRES & TEXTILES in Eastern Europe 2010, Vol. 18, No. 2 (79) pp. 31-34.

Published in issue no 2 (79) / 2010, pages 31–34.

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