US Patent 7981340 Method of degassing a flowable mass in a ring extruder

Patent 7981340 was granted and assigned to Buhler Group on July, 2011 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Buhler Group

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7981340

Date of Patent

July 19, 2011

Patent Application Number

12653009

Date Filed

December 7, 2009

Patent Primary Examiner

‌

David L Sorkin

Patent abstract

The method of degassing is performed in a ring extruder wherein at least one process chamber is provided with at least one degassing opening. The radius R of the conveyor element in the degassing zone is smaller by ΔR than the full radius Rv of the conveyor element required for the mutual stripping of adhering product in a closely intermeshing screw operation with adjacent conveyor elements.