الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Nowadays, there is an intention to increase the flax fiber exportation as well as local industry which depend to a great extent on the fiber quality. The degree of retting is the single most important factor governing the mechanical extracting of the fiber from the stem. So, it is very important to improve retting methods for the flax straw. In Egypt, The traditional retting method especially in El-Gharbia Governorate, water retting in cement basin without changing water (still water). And, two mechanized systems for extracting flax fiber from the stem (partial mechanized system, and complete mechanized system). The main aim of this research was to optimize the necessary recommendations which are needed to best flax fiber extraction with a low cost, low energy and high efficiency. The main results obtained from the experiments are summarized in the following main points:1. The best mechanized system for extracting flax fiber from the stem is complete mechanized system (Turbine machine).a) High extraction capacity (1.6 Mg/h.).b) Specific energy consumed (40.06 kW.h/Mg).C) Criterion costs (504.59 LE. /Mg).2. The best of water retting method is retting with changing the water in basin every 48 hours.3. The moisture contents of flax straw must be about 10.15 %.