Effects of Pin Drafting on Irregularities of Sliver Made from Fine Denier Fibers

A study to improve the quality of yarns spun from fine denier fibers evaluated the effects of pin drafting on the irregularities of sliver manufactured from fine denier fibers. An experimental pin drafting machine drafted slivers from four levels of fiber fineness by changing the draft ratio. Deviations between indexes of irregularities c..

The Spinning Process.

Processes to which cotton fibers are subjected prior to yarn formation include bale selection, conditioning, opening, blending, cleaning, carding, drawing, combing, roving, and spinning. Spinning mills process 6-100 bales at a time depending on their opening and blending machines. Blowrooms allow each bale to expand and acclimatize. Openi..

Modern Spinning Mill Management.

A staple yarn spinning mill in Germany uses ring and rotor spinning machinery to produce 12 million kilograms of yarn per year, including seven different ring spun yarns and six different rotor spun yarns. Ring spun yarn counts range from Nm 20-100 and rotor spun yarn counts range from Nm 5-70. Mill infrastructure includes quality monitor..

Recent Technological Developments in Spinning -- A Vista of Evolution and Revolution.

Productivity levels for modern blowroom machinery include bale opening speeds of 1,400 kilograms per hour, coarse cleaning speeds of1,200 kilograms per hour, mixing speeds of 600 kilograms per hour, and fine cleaning speeds of 500 kilograms per hour. Carding machine production rates are 80-1,000 kilograms per hour. Drawing machine deliver..

High Productivity Staple Fibre Spinning.

Yarn manufacturers require spinning machines to offer low installation and production costs, high and uniform quality, high reliability, easy handling and operation, and flexibility. Zimmer AG's BN100 ring spinning machine with radial quenching initially manufactured 1.8 kilograms of yarns per minute and offered a 40 percent savings in pr..

View of the Yarn Behaviour Produced Using Pneumatic Spin Nozzles.

Researchers studied the inside flow behavior of yarns to optimize the design of pneumatic spin nozzles used to manufacture yarns. Air velocity distribution on different planes affected yarn performance. A 5:1 scale model, which helped to visualize and measure yarn performance, generated enough data to improve the design of pneumatic spin ..

New System for Automatic Bobbin Handling.

Salmoiraghi SpA installed an automatic bobbin handling system at Brilen SA, a spinning mill in Barbastro, Spain, for the manufacture of partially oriented yarns, drawtwisted yarns, and industrial yarns. The system consists of a line of feed carriages with exit, entrance, and dispatching zones; auxiliary equipment to protect and organize t..

Dynamic Analysis and Development of Card-spinning System.

Research developing short staple yarn spinning machines with shorter processing lines will analyze the motion dynamics of fiber clumps and particle in an air flow field and develop a single step carding and spinning process that incorporates multiple spinning heads in the carding machines. Researchers analyzed web uniformity monitoring, m..

Retrofitting Existing Worsted Spinning Frames with the Suessen EliTe Spinning System.

A Zinser worsted spinning machine retrofitted with a Suessen EliTe spinning system features a drafting system followed by a condensing zone with a profile tube, lattice apron, and delivery top roll. A suction unit places the profile tube under negative pressure. The air flow created by the vacuum and the lattice apron grips the fibers eme..

Cognetex: New COM4 Wool Compact Spinning Machine.

Rieter and Cognetex SpA's IDEA COM4 Wool compact spinning machine uses a reduced spinning triangle to improve parallelization and aerodynamic condensation during woolen yarn manufacture. Compact yarns feature improved Uster evenness, greater elongation and abrasion resistance, less hairiness and pilling, and improved wear resistance and c..