Abstract
Different techniques are applied for the fabrication of ceramic materials for resolving different engineering applications. In this paper a composed material from thermoplastc materials was replaced by reinforced polypropylene (PP). The mathematical model of viscoelastic behavior was applied. This process is well modeled by fluid flow correlations in the single screw extruder. The operating point of the extruder is calculated by solving the mathematical model when the flow rate and the pressure drop in the extruder are calculated. Also in this paper melt flow of reinforced ceramic materials, where 90 % of poly propylene is reinforced with 10% fiberglass is mathematically modeled and analyzed