Process for making a carbon heat source and smoking article incl

Details Process for making a carbon heat source and smoking article incl Process for making a carbon heat source and smoking article incl

1987-10-26

1991-10-29

Millin, V.

Tobacco

Method or apparatus for making tobacco substitute

131359, 131194, A24D 118, A24B 1516, A24B 1518

Patent

active

050606760

ABSTRACT:
The present invention relates to a process for producing a tasteless carbon heat source from a preformed article of a ligno-cellulosic material according to which the article is pyrolyzed in a continuously exchanged inert atmosphere at a temperature within the range of from about 800.degree. to about 1100.degree. C., for from about 0.5 to about 3 hours, then cooled in the inert atmosphere at a rate of from about 500.degree. to about 10.degree. C. per hour to a temperature within the range of from about 275.degree. C. to about 25.degree. C., and then subjected to at least one additional process step selected from an oxygen absorption step, a salt impregnation followed by heat treatment step, and a water desorption step. The present invention also relates to a smoking article including the carbon heat source, and a flavor generator comprising a substrate material containing at least one thermally releasable flavorant.

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