Patent ID: 8608367
Filing Date: 2013-12-17
Classification: B01F,B29B,B29C

Abstract:
1. A screw extruder comprising: a feed hopper for receiving materials, wherein the feed hopper is in communication with a body member having at least one supply port and at least one outlet port; a series of one or more conveying screw elements positioned within the body member; a series of one or more forward, neutral, and reverse kneading elements interspersed between the conveying screw elements; and a drive shaft for rotating the conveying screw elements and the series of one or more kneading elements along a channel defining a longitudinal axis of the extruder; wherein the screw extruder is configured to mix the materials received via the feed hopper with the series of one or more kneading elements, wherein there are one or more conveying screw elements between the one or more kneading elements and two or fewer conveying screw elements at an end distal to the feed hopper, and wherein the number of said kneading elements is greater than the number of said conveying screw elements.