Robert F. Dray is the founder and owner of R. Dray Mfg. Inc., and the founder of Feed Screws Inc. in 1967. A screw of ?general-purpose? design is purported to have the ability to process a wide range ...
There is almost no part of a molding machine that is more important than the engine that melts and injects the plastic. The screw, the barrel, and the mechanical front end of that combination can have ...
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