METHOD AND APPARATUS FOR EXPANDING FOODSTUFFS AND LUXURY FOODSTUFFS/TOBACCO MATERIALS

摘要

The invention concerns a method and an apparatus for expanding foodstuffs an d luxury foodstuffs/tobacco materials capable of being expanded, m 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.