الفهرس 
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Abstract
INTRODUCTION
The incidence of manufactured cotton wastes in Egypt, reaches high proportion in ~h ginning and spinning manufacture. There are various types of cotton wastes which differ in their characters that depend on the industrial stages,and the adjusting machines which affect the physical properties of cotton fibers and grades.
There is no definite or agreeable system for classifing, grading and marketing se types of wastes, therefore, every mill tends to market its own wastes depending on experience; this leades to many difficulties when marketing and classifing those types of ton wastes.
It is better to establish a scientific base which could help in establishing general ,tern for grading and marketing those types of waste., Also, it is better to study the possibliity which achive the maximum utilization from manufactured cotton wastes through blending with standard cotton of short and medium staple length to produce coarse and medium yarns Counts usually intended in production of low quality fabrics.
I
In fact, the marketing of cotton wastes is quite different from the marketing of {cotton. In the waste trade, there is no equivalent of the cotton spot and futures markets, because there are no recognized standard grades or staple lengthes for the various types of cotton wastes (Docrey et al.1950).
The waste recovery and utilization is a subject that is gaining increased attention in tile manufacturing. The utilization of cotton fiber wastes material has not used to a great extent due to the poor technological methods.
Nowadays, cotton fiber wastes are used in Egypt to spin yarns counts (6,14 N.M.)which used for the production of popular fabrices.
Cotton fiber wastes, namely flat card strips, filter wastes and moils, represent about 7-9% of raw cotton used in spinning industry, wastes namely, low-mixed, scarto and off-grade cottons, represent about 2-4% of the total crop of the Egyptian cotton production, every year.
Therefore, this study was carried out on manu factured cotton wastes:
I - To invistigate the physical properties of the manufactured cotton wastes ac¬cording to their production at ginning and spinning mills.
2 - To throw more light on the possibillities of using low quality cotton and manu¬factured cotton wastes through blending with Dendera cultivar, to produce
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