Two-stage single screw extrusion apparatus and process

Details Two-stage single screw extrusion apparatus and process Two-stage single screw extrusion apparatus and process

B - Operations, Transporting

29

C

18/733

B29C 47/62 (2006.01) B29C 47/38 (2006.01)

Patent

CA 1049209

TWO-STAGE SINGLE SCREW EXTRUSION APPARATUS AND PROCESS Abstract of the Disclosure A two-stage single screw apparatus and process for the extrusion of plastic resins, the first stage positively advancing the resinous material while in a highly viscous state with minimum blow-back and the second stage, through the use of a screw having multiple lead threads with a high pitch adapted to allow substantial blow-back to provide mixing and ultimate discharge of the resin through die means, providing precise metering and discharge of the molten resin through the die over a wide variation of die pressures. -1-

241167

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