Patent ID: 9089831
Filing Date: 2015-07-28
Classification: B01J,B29B,B29C,B29K,B29L,C08J

Abstract:
1. A manufacturing system for producing a polyolefin, comprising: a reactor system comprising a polymerization reactor, wherein the reactor system is configured to produce two or more polyolefin polymers; and an extruder comprising a screw having a feed zone and a high shear melting and mixing zone downstream from the feed zone, the high shear melting and mixing zone starting a distance from an entry point of the screw corresponding to 35% -50% of the overall screw L/D, wherein the screw is configured to blend the two or more polyolefin polymers, and wherein the screw comprises segments configured to increase a degree of fill in the high shear melting and mixing zone, and the segments comprise a backward conveying segment having a screw turn direction that is substantially opposite a screw turn direction of the feed zone, a 3-lobe kneading block segment positioned immediately adjacent and downstream of the feed zone, a neutral kneading block segment positioned downstream of the 3-lobe kneading block segment, and a 2-lobe right hand kneading block segment positioned downstream of the neutral kneading block segment.