Patent ID: 6129010
Filing Date: 2000-10-10
Classification: A23L,A23P

Abstract:
Twin screw extruder comprising, in combination: a housing assembly including a channel adapted to receive intermeshing screws; first and second intermeshing screws located in the channel and rotatably mounted in the housing assembly; an inlet formed in the housing assembly for the introduction of material into the channel; an outlet formed in the housing assembly for exiting of conditioned material from the channel, with the first and second screws including an inlet zone for conveying material from the inlet towards the outlet, an operative zone for conditioning the material moving between the inlet and the outlet, and an outlet zone moving the conditioned material through the outlet; a first duct for introducing steam into the channel in the operative zone of the screws; and means in the channel upstream of the first duct for creating a material plug in the channel for generally preventing steam introduced through the first duct from passing upstream therebeyond.