The Effect of a Slub on the Stability of the Ring-Spinning Balloon.

In a previous paper, which includes a computational model for investigating the effect of a heavy slub passing through a ring spinning balloon, researchers modeled the additional mass in the slub with a Gaussian distribution function that represented the total mass and length of the slub with two independent variables. Here, the researche..

New Spinning Technology Ready for Market Uptake.

At ITMA 1995, Belroy unveiled a new British short staple fiber spinning system for manufacturing fine yarns. Belroy created the SpinWell friction spinning machine as an alternative for mills seeking the ability to spin high quality fine yarns at high speeds with low operator overhead. The SpinWell incorporates components that are easy to ..

Sirospun Facility to Boost Quality.

The Zinser Sirospun system facilitates processing of most natural and manmade fibers and blends in the long and short staple ranges. The sirospun facility also allows manufacturers to influence the structure and properties of the spun yarn, and, therefore, to react more effectively to various market requirements and increases in productio..

Spindle for Cover Spinning.

Cover spun (hollow spun) yarn, a core type of fancy yarn, comprises a core of spun yarn (Usually cotton, viscose, or wool) and a cover of continuous filament yarn (usually nylon, polyester/silk, or acrylic). An introduction to cover spinning outlines the manufacturing process, describes the hollow spindle unit and winding unit, discusses ..

Modern Spinning Systems.

Engineers have developed several alternatives to coventional ring spinning, including spindle bearings and ring and traveler combinations, that overcome the limitations of ring spinning. An introduction to rotor spinning outlines the method of twist insertion, merits and limitations in comparison with ring spinning, cost comparisons betwe..

Sliver Master - Quality Assurance in Spinning Preparation

Loepfe's SliverMaster System monitors sliver quality during drawing, carding, and combing processes. An online optical device illuminates the sliver during processes. An online optical device illuminates the sliver during processing. The optical system divides the incident light into reflected, absorbed, and transmitted components. A sens..

Towards Higher Rates of Production in Draw Frames and Fly Frames.

A SITRA survey discovered that many spinning mills are not achieving anticipated production efficiency with drawing frames and fly frames. A number of production issues address correction of this deficiency. To improve machine delivery speed, the speed of each machine must conform to prescribed standards and must be properly maintained. T..

Modifications to Drafting System for Improvement in Yarn Quality

Researchers examined the benefits to yarn quality and spinning performance that arise from making modifications in ringframe drafting systems. Researchers introduced varying depressions into the nose bar's height for a portion of the width on the front side. The modifications caused a 14 to 45 percent reduction in yarn imperfections, part..

Ouality monitoring for twisting machines

Barco's Opti-Twist sensor for real-time measurement of twist on a per-spindle basis and ends-down detection is described. The capabilities of the system are outlined. Cost and technical justifications of investment in the system are considered. The Opti-Twist can be integrated with a plant-wide CIM system such as the Barco Sycotex system.

On-line quality control and total quality in the modern area of combing and drafting

Innovations in the field of quality control in cotton combing and drafting are described. The paper deals with the 'short period' regulation of modern card slivers; the new generation of Superlap drafting machines; on-line quality; an integrated transport system with laser technology; the development and operation of the transport system;..