By C A Lawrence
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Extra info for Advances in Yarn Spinning Technology
The action gives continuous spinning, because as a length of fibre ribbon is removed and twisted to form the yarn, more fibres are collected to replace the length. Friction spinning The friction spinning technique also uses the opening roller principle to highly attenuate a feed sliver. However, as illustrated by Fig. 18 the individualised fibres are collected in a groove formed by two rotating perforated drums. The tail of the forming yarn is also held within the groove by suction via the perforated surfaces, generated externally to the drums.
Du Point, Fasciated Yarn combines the best characteristics of spun filaments, Textile World, 134–135, 1974 25. , Coverspun: a new yarn formation process, Canadian Textile Journal, March 1980, 97: 49–56 © Woodhead Publishing Limited, 2010 2 Fundamental principles of ring spinning of yarns R. S. R e n g a s a m y, IIT Delhi, India Abstract: Ring spinning is one of a number of methods for assembling and twisting fibres to form a yarn. To fully explain the fundamentals of the ring spinning process, a review of the general principles of yarn formation is described.
Carding can be used to produce a suitable material for directly spinning at the mule. This yarn manufacturing process is known as woollen spinning. Instead of a roving being fed to the mule, the feed material is called a ‘slubbing’. Slubbings are formed by splitting the web removed from the swift by the doffer into ribbons and consolidating these ribbons by rolling them between two aprons which reciprocate whilst rotating [7, 8]. As the slubbings issue from the aprons they are wound into packages that are subsequently creeled at the mule spinning frame.