الفهرس 
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Abstract
INTRODUCTION
Cotton is still one of the basic components of the national economy, and a principal item of export upon which the national execution of development projects largely depends. On the other hand, Egypt has a well established cotton industry which, in recent years, has been expanding. As Egyptian cotton is the king of the other cotton fibers, a larger demand for Egyptian cotton textiles, both for local market and foreign exports, is anticipated in the years to come.
F or many years the cotton textile industry used the traditional ring spinning system for making yarns. Such spinning system was subjected to tremendous changes in production rates and automation from the bale to the yarn. In spite of these developments, the actual ring spinning process still represents the bottleneck because of its lower rate of productivity and higher costs. In addition, the ring spinning system was suffering from the three limiting factors :
1- Power consumption, depending on spindle speed and bobbin diameter.
2- Yarn tension , resulting from the increased centrifugal forces and air resistance due to the rotational speed of the balloon.
From this array of problems, it became quite clear that a new spinning technique is in order. Such new spinning technology may be characterized