Patent ID: 6773739
Filing Date: 2004-08-10
Classification: A21C,A23P,B29B,B29C

Abstract:
An extruder system comprising:an elongated tubular extruder barrel presenting an outlet end; an elongated, axially rotatable, flighted screw within said extruder barrel; a selectively adjustable back pressure valve assembly operatively coupled to said extruder barrel outlet end, said assembly including a structure defining a passageway with an inlet and an outlet, said inlet communicating with said extruder barrel outlet end, said assembly having a valve member selectively shiftable relative to said passageway for altering the effective cross-sectional open area presented by the passageway; and a product treatment assembly located adjacent said passageway outlet for receiving product after passage through said extruder barrel and back pressure valve assembly, said treatment assembly permitting superatmospheric pressure treatment of said product therein.