Abstract: A method and an apparatus for expanding foodstuffs and luxury foodstuffs/tobacco materials capable of being expanded, in particular moist tobacco materials, wherein said materials in a carrier flow comprising steam pass through an expansion zone, comprising a Laval nozzle, in which the speed of sound is attained in the narrowest cross section.
Type:
Grant
Filed:
March 2, 2000
Date of Patent:
June 4, 2002
Assignee:
British American Tobacco (Germany) GmbH
Inventors:
Frank Pluckhahn, Gerald Schmekel, Arno Weiss