Patent ID: 7654813

Claim:
A high capacity extrusion die assembly comprising: an elongated tubular section having an axial length, a smaller diameter inlet end and a larger diameter outlet end, with an internal bore progressively diverging at an angle of from about 1-11° in a direction from said inlet end towards said outlet end; an external heat exchange jacket around said tubular section and operable to receive cold water or steam; an elongated, axially rotatable screw section within said tubular section and having an axial screw length with a smaller diameter inlet end proximal to said tubular section inlet end and a larger diameter outlet end proximal to said tubular section outlet end, said screw section including an elongated shaft with outwardly extending helical flighting presenting flighting outer surfaces along the length of the shaft, said flighting outer surfaces progressively diverging at an angle of from about 1-11° in a direction from said screw section inlet end toward said screw section outlet end; and a die unit associated with said tubular section outlet end and having a plurality of die openings therethrough configured to create a pressure drop across the die openings.