Single screw extruder for processing of low viscosity preconditioned materials

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8246240
APP PUB NO 20090175119A1
SERIAL NO

11969173

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Improved single screw extruders systems (40) are provided including a single screw extruder (42, 92) as well as an upstream preconditioner (44). The extruders (42, 92) include a single, internal, elongated, helically flighted, axially rotatable screw assembly (52) having one or more improved screw sections (74, 74a, 76). The screw sections (74, 74a, 76) include specially configured flighting (86) wherein adjacent flighting portions (86a, 86b) have smoothly arcuate surfaces (88) extending between the respective flighting portion peripheries (90a, 90b). This flighting design provides smooth, substantially surge-free operation while increasing SME and cook values. The preferred preconditioner (44) has independently controlled mixing shafts (106, 108) allowing the shafts (106, 108) to be rotated at different rotational speeds and/or directions.

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Patent Owner(s)

Patent OwnerAddress
WENGER MANUFACTURING INC15 COMMERCE DRIVE SABETHA KS 66534

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wenger, LaVon Sabetha, US 25 257

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