Increased barrel-stress extruder

Details Increased barrel-stress extruder Increased barrel-stress extruder

1993-07-28

1994-05-24

Jenkins, Robert W.

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

366318, B29B 106, B01F 708

Patent

active

053142462

ABSTRACT:
An extrusion apparatus 10 for extruding thermoplastic materials comprises a hollow cylindrical barrel 12 having a preferably smooth inner cylindrical wall 14. An extrusion screw 16 is mounted for rotation about an axis 18 within hollow barrel 12. The extrusion screw 16 has a major diameter, a minor diameter defining a minor circumferential surface (MCS) of the screw 16, and material pushing threads that are spaced axially and have a normal height `h` extending outwardly from the MCS of the screw into rotatable contact with the inner cylindrical wall 14 of the barrel 12.

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