Plasticating and injection molding system

An injection process comprises:

• providing an injection assembly with a fixed position helical plasticating screw within a movable inner barrel, a screw feed port to accept polymeric material, liquid or powder material that is fixed to said movable inner barrel in a position complimentary to said helical plasticating screw feed port a plunger head assembly-attached to a free end of said movable inner barrel in spaced relation to a free end of said plasticating screw, a drive housing, a screw drive motor and injection cylinders forming an integral longitudinal reciprocating injection assembly with said helical plasticating screw, inner barrel and a said plunger head movable from a first upstream position to a second downstream position, a fixed outer cylindrical pressure vessel registerably receiving said plunger head, movable inner barrel, and said plasticating screw therein, means for closing said cylindrical pressure vessel downstream of said plunger head, heater bands placed on outer diameter of said fixed outer cylindrical pressure vessel for heat transfer to said movable inner barrel, said helical plasticating screw and said polymeric material that are movably positioned within said fixed outer cylindrical pressure vessel,
• receiving processible plastic material within said helical plasticating screw in said injection assembly for processing,
• transferring processed plastic material in fluid form from said helical plasticating screw through said plunger head into said fixed cylindrical pressure vessel forcing said injector assembly said helical plasticating screw and inner barrel to move upstream to a preset position determined by polymeric material mass displacement to fill an injection mold in communication with a nozzle body on said pressure vessel from an injector forward position, and;
• energizing injector cylinders on said injector assembly and said drive motor for said helical plasticating screw.