Government Central Textile Institute

Kānpur, India

Government Central Textile Institute

Kānpur, India
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Nishkam A.,Government Central Textile Institute | Shukla L.,Government Central Textile Institute
Textile Magazine | Year: 2010

Mathematical models of DRF spinning techniques for P/W yarns have been formulated, in an effort to obtain better quality yarn. These mathematical models have also explained fundamental principles of fiber to yarn manufacturing. Mathematical models play a key role in overcoming the challenges faced when a certain amount of draft is applied in the drafting area onto the roving to obtain the required yarn quality during spinning. These models also solve the problems encountered in imparting twist for binding the fibers to give necessary strength. These models have been developed to deal with a number of factors that influence the yarn geometry during spinning. These factors include spinning triangle, spinning distance (E), and spinning angle (C) where the spinning triangle and spinning angle affect the fiber breakage significantly, along with the spinning triangle influencing the yarn structure.

Nishkam A.,Government Central Textile Institute | Shukla L.,Government Central Textile Institute
Textile Magazine | Year: 2010

The mathematical models of DRF spinning techniques for P/W yarns are discussed. The strand spacing between drafted roving at the front nip of the drafting zone is an important parameter that influence yarn quality and spinning performance. The equilibrium of the spinning triangle is distribution by a combination of the natural imperfections in the levelness of the strands, and variations in the tension of the yarn generated from the ring traveler and balloon. A relation between strand spacing and fiber length (L) has been established for producing best possible yarn. The wool processes on the woolen system is referred to as carding wool such as crutching locks, lambs and skirting, which generally have staple length ranging from about 30 to 50 mm. The frequently accruing irregularities in yarns are thin and thick places and Neps that deviates from the average value by a pre-determined reference values.

Nishkam A.,Government Central Textile Institute | Shukla L.,Government Central Textile Institute
Textile Asia | Year: 2013

Double Roving Feed (DRF) technique and compact spinning make yarn manufacturing costefficient. This study finds that the characteristics of DRF knitted fabrics at optimum processing variables are better in comparison with conventional yarns.

Nishkam A.,Government Central Textile Institute | Shukla L.,Government Central Textile Institute
Melliand International | Year: 2013

The DRF yarn knitted performance is studied and optimized by using Box and Behnken's Design taking wool fiber length, TM and strand spacing as variables and compared with the conventional yarn. The higher wool length shows higher weight, abrasion and bursting strength. The relation of TM is not visible. The role of strands spacing was dominant.