By Carl Lawrence
This publication offers a useful unmarried resource of data at the advances in yarn spinning applied sciences. complicated spinning platforms are defined and comparisons are made from the houses of the yarns produced, and resultant entire items, with these from traditional structures. half 1 presents an creation to yarn fiber spinning and constitution. Chapters talk about the foundations of ring spinning and open-end spinning of yarns. Yarn constitution and homes from varied spinning recommendations and yarn structural necessities for knitted and woven materials also are tested. half 2 covers advances specifically yarn spinning applied sciences. themes diversity from siro spinning to compact spinning know-how and air-jet spinning. ultimate chapters discover tips to reduce fiber harm that may happen in the course of spinning and using spin finishes for textiles. With its extraordinary editor and array of overseas individuals, Advances in Yarn Spinning expertise is a vital textual content for spinners, yarn brands and upholstery manufacturers, in addition to researchers, technicians, engineers and technologists during this region of the cloth undefined.
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Additional info for Advances in Yarn Spinning Technology (Woodhead Publishing Series in Textiles)
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. This preparatory process therefore dispenses with the need for the roving frame for the production of mule spun yarns.
18 where Cy is the yarn count (tex). 5 Modern spinning methods and developments: an overview Although ring spinning has the advantage over earlier systems of higher production speeds and consequently reduced labour costs, the largest size of yarn package that could be built was limited by the ring size. Further the ring size limited also the traveller speed and thereby the spindle speed. This is because the frictional drag of the ring on the traveller can generate a high temperature at the ring–traveller interface; such temperatures can be reached where the traveller locally melts and central forces eject it from the ring.
2, grouped according to the fundamentals of the spinning method on which they are based. Important aspects of any spinning system are the fibre types that can be spun, the spinnable count range, the economics of the process and (very importantly) the suitability of the resulting yarn structure to a wide range of end uses. E. spinning Type of twisting action during spinning Single strand Real Twisted: S or Z twisting Double strand Real Twisted: S or Z ply twisting Breaking fibre Rotor spinning Real mass continuity at Friction Real twist zone spinning Self-twist Alternating spinning S and Z folding twist type of yarn structure produced for fibre consolidation False twisting False two fibrous standards positioned to self-ply Wrap Wrap of Alternating False spinning fibrous core S and Z by either twist wrapping (a) filament Hollow spindle False yarn or (b) staple fibres Fasciated False wrapping Trade names Various Sirospun, Duospun Twisted: Z + wrapped Twisted: Z + wrapped Various S and Z twisted Repco S and Z twisted plus wrapped Selfil Twistless core plus wrapped Twisted core plus wrapped Twistless core plus wrapped Twistless core plus wrapped and plied Parafil © Woodhead Publishing Limited, 2010 Dref II Dref III MJS Plyfil 40 Advances in yarn spinning technology on ring and rotor spinning systems.