Open-end spinning

Opened fullerenes, 12 232 Open-end spinning, cotton yarn, 8 17 Open-head drums, 18 8 Open-hearth furnace, 12 320 21 408 Open-hearth steelmaking process, 16 150-151... 

The technology with which cotton is now processed between the field and the mill was developed before the energy crisis, before OSHA, before EPA, before wage-and-hour laws, before open-end -spinning, before electronic data processing and before economical seed-cotton storage. That is to say that it predates factors that cause the need for advances, but it also predates the technology that will eventually lead to advances that permit cotton to meet the needs of the modern textile trade. 

Lubricant and antistat for the processing of synthetic fibres and their blends. Improved fibre control gives level yarns, less fly waste and fewer roller laps. Excellent results have been achieved in open-end spinning of acrylic fibres treated with ALCOSTAT L where a marked reduction in accumulated trash was noted. Good non-yellowing properties make it particularly suitable for use on propylene. 

Especially effective as softener and lubricant when applied in dyebath to acrylic staple fiber that is to be made into yarn on open-end spinning equipment. 

Is a water dispersible surfactant whose primary end-use is as an overspray for open-end spinning of synthetic fibers. 

Is a water-soluble surfactant used as a base lubricant for synthetic fiber spin finishes, open end spinning, and overspray finishes. It is also an excellent co-emulsifier and coupling agent for many formulations. 

Yams are the conventional area where reclaimed fibres are used. However, to make the production of reclaimed fibres more economical, it is necessary to make use of up-to-date spinning processes. There is a solution described in which is a modification of the open-end spinning process. A breaking-down unit with an extra breaking-down roller breaks the fibrous particles still contained in the blend of reclaimed fibres. The particular way the extra breaking-down roller is arranged. 

The newer spinning methods produce yarn directly from drawing sliver, such yarns rarely, if ever, achieving the overall quality of ring, spun yarns. Rotor, or open-end spinning is a method of yam formation that can produce coarser yams at... 

Friction spurning is a variation of the open-end spinning system and often referred to as the DREF system. In this system, one or more slivers are fed onto a rapidly rotating card drum which opens the si iver to form single fibers. The separated single fibers are blown from the card dram by a stream of air onto the junction of two parallel perforated drams turning in the same direction. The rotating perforated drams under suction cause the fibers to be compressed and twist around aie another to form a uniform yam which is continuously removed onto a spool. The resultant yarns are bulky and have properties similar to woolen yarns. 

Air-vortex spinning is similar to open-end spinning but util izes a stationary tube rather than a rotor. A high speed air vortex is created in... 

Two further improvements to the basic concept were proposed. The first was a broad-based patent based on the development of an open-end spinning technology called aerodynamic break spinning (ABS) but which utilized differential twisting to create a novel yarn structure from staple fibers at very high speeds (claims of potentially 3000 m/min). Within the general claims, there is also the potential to include a filament core (to make a core spun yarn) or to incorporate a filament covered with molten polymer (Bobkowicz, 1976). When viewed against the ICS system, the proposed approach was much more complex and was not commerdalized. 

Nield, R. (1975) Open-end spinning. The Textile Institute, Manchester, UK... 

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