An Approach to Global Benchmarking for Indian Spinning Industry.

The benchmarking process requires a company to analyze its own internal processes, identify leaders in a particular department, and adopt measures superior to those in place. BTRA has conducted several studies of textile mills to identify best practices in India and abroad. Optimizing yarn manufacture involves analyzing each cost element,..

Three-Drives in Sync.

William Tatham's automatic doffing system for Westwood Yarns uses three synchronized drives to transfer bobbins to new spools and deliver compact, high density packages to the front of the creel for unloading. The first drive moves empty condenser bobbins into contact with the drive drum and into the build position. The second drive moves..

Muratec Air Yarn Forming Generations.

Murata machinery Limited introduced the first air jet spinning machine at the end of the 1970s. Air jet spinning machines integrate roving, spinning, and winding processes into one machine. The Murata Jet Spinner (MJS) air jet spinning machine spins at speeds of up to 300 meters per minute. The Murata Vortex Spinner (MVS) air vortex spinn..

Determining Optimum Strategies for Foreign Fiber Control in Spinning.

An ongoing project to identify manufacturing methods that optimize the control of foreign fibers during cotton yarn spinning will combine existing detection and extraction systems to optimize performance. Studies will determine maximum cleaning levels during spinning preparation, spinning, and winding. Researchers will combine different e..

Core Feeding Design & Effects on Core Covering

A study manufactured polyester/viscose staple fiber covered elastomeric monofilament core yarns using three core positioning methods--positioning the core at the edge of the roving, at the center of the roving, and between two rovings--on a modified ring spinning machine. An Uster Tensorapid 3 testing machine measured yarn strength, tenac..

Visualisation and Quantitative Recording of Airflows in the Card.

Particle image velocimetry permits the visualization of air flow at cutting knife edges and in the wedge shaped region where the cylinder and doffer are close together in cotton opening and cleaning machines. The method uses a laser to create a thin curtain of light and a modified video camera to observe particles within the curtain. Imag..

Grinding of Top Rollers Used in New Spinning Processes.

Huber + Suhner AG's Berkol automatic grinding machines provide automatic grinding of top rolls used in new spinning technologies. The top rolls used in Murata's air jet spinning machine are pressed individually onto metal shells. For automatic grinding of the covers, they can be pressed onto the ginding mandrel and removed after grinding ..

Role of Speed Frame in Controlling Quality of Roving in Worsted Spinning.

Roving defects cannot be eliminated or repaired during spinning. They reduce yarn grade, increase ends down and waste, and limit machine productivity. Quality rovings have a uniform linear density and excellent appearance and must be rubbed or twisted on the roving machine. Causes of roving stretch include low twist, variations in bobbin ..

The Role of Fiber Finish on Drafting Behaviour.

Experiments used fallers mounted on an Instron tensile testing machine to simulate the drafting behavior of lubricated and nonlubricated wool sliver during drawing and evaluated the effects of various lubricants. Researchers measured the load generated during drafting and analyzed the shape of load displacement curves. Sliver weight and d..

Spinning machine

This patent covers a particular scheme for the linking of a ring spinning machine with a winding machine. The transport device round the spinning machine is a synchronous endless belt with carrier attachments (for peg carriages) separated by the exact distance between spinning stations. Each station has its own doffing device. Full yarn p..