Winding, twisting and cabling technology for technical yarns

The trends observable at ITMA '99 in this sector were oriented particularly to modifications of existing systems, combined with improvements in quality, increased ease of operation and a high level of efficiency. This was achieved by a increased automation, including the integration of electronic control and computer aided quality monitor..

ITMA review : Spinning preparation

Provides a survey of the developments in spinning preparation technology on show recently in Paris, which were most noticeable in automation, ease of operation, product quality and production speeds. The survey looks in turn at bale openers, cleaners, process control, cords, cotton combers, wool combers, carbonizing equipment, wool washer..

ITMA 99 survey 8 : Combers, drawframes, speedframes, air/water

More efficient combers were on show in Paris from M.A.L., Rieter, Toyoda and Marzoli. Trutzschler, Vank, Rieter and Toyoda displayed new drawframe designs, two of which were finisher machines and a third may be used as a breaker or a finisher. Various speedframes, transport units and innovative components were exhibited. Systems for air t..

Fibre web-forming machinery

At ITMA '99 machines for forming fibre webs, including their associated control units, were offered by 44 manufacturers. The vast majority of these companies (92%) were European. Developments in fibre feeding and blending, cards and laying machines and aerodynamic web forming are highlighted.

Tensile Properties of Friction Spun Yarns.

Although DREF 3 friction spun yarns are stronger than open end friction spun yarns, they are not as strong as ring spun and rotor spun yarns. To enhance the strength of DREF 3 yarns, researchers attempted to improve the reinforcing effect of the sheath by introducing additional long, strong, and flexible fibers. For all cotton, polyester,..

Ring Spun Cover, Core, and Siro Yarns: A Comparative Study.

Researchers compared the properties of ring spun cover yarns, core yarns, and SiroSpun yarns. The study used cotton roving and nylon filament to spin the different types of yarn. The introduction of filament yarns increased yarn denier, decreased yarn twist, and decreased the twist coefficient of variation. The cover spun yarn showed the ..

A New Methodology Usable by Researchers and Spinners for Short Staple Fiber Microspinning.

CIRAD's system for microspinning cotton samples of 50-500 grams comprises opening, blending, carding, sliver condensation, drawing, and spinning. CIRAD uses a Platt microspinning machine consisting of a minicard, drawing machine, and an eight spindle spinning machine with double drawing, as well as six Suessen open end rotors. The lengths..

The Suessen EliTe Spinning System for Long and Short Staple Fibres.

The Suessen EliTe compact ring spinning machine eliminates the spinning triangle to increase yarn strength, reduce yarn hairiness and fly, and improve operating performance. Extending the condensing operation up to the delivery clamping line, light tensioning of the fiber band, and rotating the fiber band around its axis during condensing..

Blends Spinning with Flax

Recent innovations in bast fiber applications include reinforced polymers or biocomposite materials based on flax or other bast fibers; degradable packing; foods and nutrients based on linseed; and bio-oils for food, fuel, and cosmetic uses. A study manufactured a satisfactory quality 50/50 flax/cotton yarn with a linear density of 30 tex..

Sticky Cotton Effects on the Carded Spinning Process.

A quantitative investigation into the effects of cotton fiber stickiness on the spinning process evaluated 26 bales of cotton of different grades under hygrometric conditions commonly recommended from preparation up to spinning. Stickiness monitoring along the different processing steps revealed that cleaning and opening operations did no..