By C A Lawrence
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Additional resources for Advances in Yarn Spinning Technology
12 The spinning mule (adapted from ). A A – spindle wharve B – Yarn wound on spindle C – Yarn in spindle-drafting zone; winding action D – Roving feed rollers E – Roving package F – Pulley drives to spindles G – Carriage wheels Advances in yarn spinning technology D Overview of developments in yarn spinning technology 21 with wire-point, to give the point-of-tooth to point-of-tooth stripping action, is positioned to remove the disentangled fibres from the large drum, after the carding action.
The vortex of jet 1 therefore wraps the edge fibre around the twisted core, forming the wrap-spun or fasciated yarn. 2 Filament wrapping Two techniques are used for wrapping a filament around a drafted ribbon of fibres to produce a wrap-spun yarn. Selfil spinning This process is an adaptation of the Repco system, replacing one of the alternately twisted strands with an alternately twisted filament (or filaments) . The filament(s) and strand subsequently ply together, and because the filament is finer than the strand it wraps the strand in an alternating Z- and S-helix.
2 Principles of false twist insertion.