Processing continuously-extruded tobacco-containing material

Details Processing continuously-extruded tobacco-containing material Processing continuously-extruded tobacco-containing material

A - Human Necessities

24

C

131/101

A24C 5/28 (2006.01)

Patent

CA 1252013

- 31 - ABSTRACT PROCESSING CONTINUOUSLY-EXTRUDED-TOBACCO-CONTAINING-MATERIALS A continuous rod 20 of foamed tobacco-containing material is delivered by extruder barrel 13 which is fed with tobacco from supply 7, binder from supply 8, and water from supply 11. To enable the rod 20 to be fed directly to a cigarette-making machine 4 it is first dried by passage through microwave driers 2, volatile materials being removed by vacuum hood 25. Rod 20 then passes along conveyor 6 and is cooled by refrigerated air driven by fan 16. The surface temperature is reduced below the bulk temperature, which has a case-hardening and stiffening effect.

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