Patent ID: 6016742
Filing Date: 2000-01-25
Classification: A23P,B29C,B30B

Abstract:
An extrusion device comprising:an elongated tubular barrel having a material inlet and a spaced material outlet and presenting an inner surface defining an elongated bore;an elongated, helically flighted screw assembly positioned within said bore;a drive for axially rotating said screw assembly at a rotational speed of at least about 500 rpm; anda peripheral extrusion die assembly disposed across said material outlet and having a series of extrusion outlet openings oriented transverse to the longitudinal axis of said barrel,said die assembly comprising a first tubular section adjacent said material outlet and presenting a converging input wall, a restricted through opening, and a diverging output wall downstream of said input wall and opening, said opening having a diameter less than the diameter of said barrel, flow-directing structure spaced downstream of said output wall and having a diverging outer surface, and annular die plate disposed about said flow-directing structure and having said outlet openings therethrough.