The intermittent type of extrusion blow molding is different from continuous blow molding in that it is not a continuous cycle. An intermittent blow molder can be very useful when processing plastics that have a low melt strength, like Polycarbonate. This project began with the donation of a partially finished prototype of a continuous blow molder. This blow molder will use a continuous blow molder. This blow molder will use a reciprocating screw injection unit that had been donated. The hydraulic pumps, the clamping system and the frame are still part of the design. This paper will discuss the design and construction of this intermittent extrusion blow molder that will be used in the Penn State University's plastics processing lab in Erie, Pennsylvania.
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