الفهرس 
Varieties of flax cropOnly 14 pages are availabe for public view
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Abstract
The main objectives of this work are; Develop and introduce a simple suitable machine to separate flax fibers on small holdings. Study the effect of some parameters on separating degree of flax fibers. Study some technological properties of flax fibers under the same parameters. Estimate the optimum performance of a developed machine for separating flax fibers. Estimate the cost and energy requirement for a unit productivity. The determined results are necessary as a database to develop a simple machine for helping the Egyptian farmers in the process of flax fiber separation. A proper prototype was fabricated at a locally workshop at Meet-Ali, Dakahleia Governorate. The determined technological properties of long flax fibers were:- fiber percentage, fiber length categories, fiber fineness, and fiber strength. These properties were investigated as affected by different machinery, and crop variables such as: separating drum speed (of 1.58, 3.52 and 8.21 m/s), straw feeding rate (of 2.0, 2.5 and 3.0 kg/ min)., and straw moisture content (of 8.42, 10.8 and 12.6 %, ) wb.) The gained results reveled that; -The best performance of the developed machine prototype, with respect to long fiber percentage (14.32%),and to fiber length category(78.99 cm) were obtained at drum speed of 1.58 m/s, feeding rate of 120 kg/hr and straw moisture content of 8.42%. -The best degree of fiber fineness (129.74 mm / mg) was accomplished drum speed of 8.21 m/s, feeding rate of 120 kg/hr and straw moisture content of 8.42%. While, the best fiber strength (27.14 mm. N /ml.g.),was associated with drum speed of 1.58 m/s feeding rate of 180 kg/hr and straw moisture content of 12.6%. -The best performance of a developed machine for separating percentage of flax fiber 75.7% were obtained at drum speed of 8.21 m/s, feeding rate of 120 kg/hr and straw moisture content of 8.42%. -The lowest values of energy requirements for separate one ton of fiber flax 13.94 kW.h/ton were obtained at drum speed of 1.58 m/s, feeding rate of 180 kg/hr and straw moisture content of 8.42% -The lowest values of cost requirement for separate one ton of straw flax 54.33 L.E/ton were obtained at drum speed of 1.58 m/s, feeding rate of 180 kg/hr and straw moisture content of 8.42%.