Source:Textile Review
DRF yarns are special twisted yarn which can producedirectly on the conventional ring frame. The Fabric weight per square meter(gms/mt2) ofFabrics Knitted by P/W Yarns in Co-relation to Processing Parameters namelyFiber Length (65, 70 and 75 mm), Twist Multiplier (2.00, 2.25 and 2.50) andstrand spacing (10, 14 and 18 mm), The Response Surface Equations are drawn at variouslevel of variables by using Box and Behnken's centrally Rotatable Design.
The contours of each response are - drawn, Overall it is observed thatthe maximum Fabric weight per square meter, is found 206 gms/mt2 at woolfiber length 75 mm/ TM value 2.50 and strand spacing 14 mm and the minimum is184 gms/mt2 at wool fiber length 70 mm/ TM value 2.00 and strandspacing 18mm
Siro spun yarn has already gain popularity in countries likeGermany, UK, Japan and Australia for the production of fabrics used for skirts,blouses, and men's wear particularly in long staple sector in India. Some oftextile mills have introduced this system for producing suiting, shirting,sewing threads, voile fabrics and knitted goods majority of mills are usingroving grindelle at ring frame for producing fancy yarns. This roving grindelleshould not be considered as Siro spun. In Siro spinning the optimization ofconvergence point geometry is there to get a yarn, which can replace theconventional two-ply yarns. This system not only produces a better quality yarnbut also helps in reduction of cost of the production.
The authors are associated with Govt. Central TextileInstitute, Kanpur.
Originally published in: Textile Review,Septembert-2010
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