Feed device for a fibre processing machine

A feed device for advancing fibre material includes a feed roll; a support element immovably held during operation and extending spaced from and generally parallel to the feed roll; and a feed tray assembly composed of a plurality of side-by-side positioned feed tray segments 7a to 7n. Each feed tray segment is of a resilient material and..

Testing techniques for modern cotton spinning mills

The focus of this article is the need to develop future testing techniques which are based on the actual needs of users. Harmonization of testing techniques, with internationally accepted index figures, is stressed. Modern testing procedures should reliably analyze the raw material independent of the vested interests of the participants i..

Apparatus for advancing and monitoring a running sliver in a fibre processing machine

An apparatus for advancing and measuring thickness and/or irregularities of a running sliver includes a tongue-and-groove roll pair composed of a tongue roll and a groove roll which cooperate to define a nip through which the sliver passes for being compressed and advanced. The apparatus has a sensing device located upstream of the rolls ..

Method and apparatus for splicing and feeding slivers

An apparatus for splicing a leading end of a first sliver deposited in a coiler can and a trailing end of an out-running second sliver fed into a fiber processing machine, includes a device for tapering the leading and trailing ends to obtain gradually tapered length portions thereof; a device for positioning the tapered length portions s..

Air curtain nep separation and detection

A nep separator and detector has means for presenting a fiber sample having fibers, neps, and trash. A toothed rotating cylinder receives the fiber sample at a fiber sample receiving point, and impacts and propels at least a portion of the trash and neps along an ejection path. An air curtain is directed toward and passes across a portion..

Technology refines yarn production

The author discusses the development of short-staple spinning, from ring spinning to rotor spinning and vortex technology. The advantages and disadvantages of each are noted. Factors considered include speed, yarn structure and properties, energy consumption and automation. In the future, the sliver to spinning system in ring spinning wil..

Preparing for change

The author explores the future of yarn preparation, looking at possible development in processing stages and also questioning the need for some types of process. Opening and cleaning, cording, combing and drawing are examined in turn. Finally, the possible elimination of the roving frame is suggested. Machines will become generally smarte..

News in the field of unconventional technologies of spinning (Serbocroatian) (Novosti u nekonvencionalnim technologijama predenja)

State of art in the field of spinning staple fibres is characterised by the development towards gradual and more gentle opening of the fibres, more intensive and continuous blending throughout the batch, and introduction of integrated systems for objective and precise tuning of working elements. A growing number of relevant quality parame..

Selection of solutions for spinning the latest generation of fibres (Spanish) (Seleccion de cursores para hilar fibras de la ultima generacion)

Experiments were carried out to determine the most suitable solutions for spinning a fire-resistant polyester, a modacrylic fibre and a blend of fire-resistant fibres. The fibres were Trevira CS 270, Kanecaron SRY and 50/50 Kermel/Viscose FR. The cursors tested were from the range produced by Reiners and Furst. The yarns produced were exa..

Performance test results from the cascade impactor, the federal reference method PM2.5 sampler, and the improve sampler

Performance testing was conducted on a Graseby Andersen 8-stage cascade impactor to evaluate it's accuracy. Performance testing was also conducted of a Graseby Andersen federal reference method(FRM) PM2.5 samper and an IMPROVE PM2.5 sampler. These two samplers operate on very different principals; the FRM sampler uses jet impaction presep..