Indian Journal of Fibre & Textile Research
Vol. 31, June 2006, pp. 286-292


Influence of sheath structure on twist and diameter of dref-III polyester-wool blended friction-spun yarn

S K Sinha  & R Chattopadhyay

Received 31 January 2005; accepted 31 March 2005

Dref-III polyester-wool blended friction yarns having different sheath compositions and structures were spun successfully on a friction spinning machine keeping polyester in core. The sheath composition and structure were changed by varying core content and selectively placing polyester and wool in different layers of sheath.  The location of the constituent fibres in sheath was found to affect both twist and yarn diameter. All wool sheath resulted in a bulky yarn with low twist.  

Keywords: Core-sheath ratio, Dref-III yarn, Friction spinning, Polyester, Wool

IPC Code: Int. Cl.8 D02G3/00