Processing of smoking material
First Claim
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1. A process for treating smoking material comprising the steps of (i) heating smoking material having a moisture content of from 5 to 75% by weight at a temperature of from 70°
- to 220°
C. at about or above atmospheric pressure in the presence of air and (ii) reducing the pressure on the heated smoking material to a level of from 0.1 to 50 kPa at a rate such that the water contained within the smoking material evaporates causing the smoking material to expand, the smoking material being heated during pressure reduction to accelerate water evaporation.
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Abstract
A process for treating smoking material comprising the steps of (i) heating smoking material having a moisture content of from 5 to 75% by weight at a temperature of from 70° to 220° C. at about or above atmospheric pressure in the presence of air and (ii) reducing the pressure on the heated smoking material to a level of from 0.1 to 50 kPa at a rate such that the water contained within the smoking material evaporates causing the smoking material to expand, the smoking material being heated during pressure reduction to accelerate water evaporation.
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10 Claims
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1. A process for treating smoking material comprising the steps of (i) heating smoking material having a moisture content of from 5 to 75% by weight at a temperature of from 70°
- to 220°
C. at about or above atmospheric pressure in the presence of air and (ii) reducing the pressure on the heated smoking material to a level of from 0.1 to 50 kPa at a rate such that the water contained within the smoking material evaporates causing the smoking material to expand, the smoking material being heated during pressure reduction to accelerate water evaporation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- to 220°
Specification