الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
The main experiments were carried out at Saft El Hena village, Abu Hammad District; Sharkia Governorate during 2014-2015 seasons to develop, test and evaluate the performance of a manufactured sisal fiber extraction machine (decorticator) under local conditions. The objectives of the present investigation are to: 1. Develop and manufacture an extraction machine suitable for extracting sisal fiber 2. Optimize some operating parameters affecting the performance of the developed machine. 3. Evaluate the developed machine from the economical point of view .The extraction machine performance was conducted under four extracting drum speeds of 7.85, 12.57, 17.28 and 22 m/s, three clearances between the knives and the feeding drum of 4, 7and 10 mm, three feeding drum speeds of 0.05, 0.1 and 0.15 m/s and three different knives number of 2, 3 and 4. Extraction machine performance was evaluated in terms of machine productivity and efficiency, sisal fiber productivity and extracting fiber efficiency, specific energy and operating cost. The present study recommended the following. 1. Using the manufactured extraction machine (decorticator) for extracting fiber and sisal pulp. 2. The proper operational conditions for operating extraction machine are: extracting drum speed of 22 m/s, clearance of 7 mm, feeding speed of 0.15 m/s and 3 knives.