Method and apparatus for coating extruded tobacco-containing material

摘要

An apparatus and a method for processing extruded tobacco-containing materials as they are continuously extruded by applying a powdery material to the surface of the extrudate, optionally wiping the coated extruded material in order to smear or embed the powdery materials along and into the surface of the extruded material. The powdery material may be a flavorant or other additive materials modifying the characteristics of the extruded material. The invention is useful particularly for use in processing foamed, extruded materials into smoking articles which can be used with conventional cigarette maker equipment to produce large quantities of foamed, extruded tobacco-containing smoking articles having properties substantially equivalent to those of a conventional cigarette.