(57) The tobacco product carries on its surface catalytically active material for improving
the burning process. The catalytically active material is selected from the group
of crystalline and non-crystalline oxides and hydroxides of aluminium, e.g. gibbsite,
having a particle size of 1 to 100 µm and a specific surface of 75 to 250 m2/g. With the use of the catalyst in the tobacco, the amount of noxious compounds in
the mainstream and sidestream smoke can be considerably reduced in the combustion
process of the smokers' article during its consumption.
The said tobacco product is useful for smoker's articles comprising a filter, a tobacco
rod and a wrapper. In such articles the tobacco rod consists of the tobacco product.
The process for preparing the tobacco product carrying catalytically active materials
on its surface consists in treating tobacco with any of the above-mentioned catalytically
active materials, without the use of binding agents, by the steps of distributing
the catalytically active material on tobacco particles and pressing the catalytically
active material on the tobacco particles, preferably with a defined degree of moisture.
The treated tobacco product is useful for manufacturing smokers' articles, particularly
cigarettes, having a reduced amount of toxic components in the smoke.
For carrying out the process, a device (1) comprising the following means is proposed:
- a) at least one conveyor belt (11, 12) for carrying the tobacco T
- b) a device (7) for supplying and distributing tobacco on the conveyor belt
- c) at least one device (9; 10) for supplying and distributing catalytically active
material (C1, C2) on the tobacco on the conveyor belt
- d) at least one driving means for driving simultaneously the conveyor belt(s) (11,
12) and the devices (7, 9, 10) for supplying and distributing tobacco and catalytically
active material.
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