PROCESS FOR IMPREGNATION AND EXPANSION OF TOBACCO A process for expanding tobacco is provided which employs carbon dioxide gas. Tobacco temperature and OV content are adjusted prior to contacting the tobacco with carbon dioxide gas. A thermodynamic path is followed during impregnation which allows a controlled amount of the carbon dioxide gas to condense on the tobacco. This liquid carbon dioxide evaporates during depressurization helping to cool the tobacco bed uniformly. After impregnation, the tobacco may be expanded immediately or kept at or below its post-vent temperature in a dry atmosphere for subsequent expansion.
申请公布号
CA2071472(A1)
申请公布日期
1992.12.19
申请号
CA19922071472
申请日期
1992.06.17
申请人
PHILIP MORRIS PRODUCTS INC.
发明人
CHO, KWANG H.;CLARKE, THOMAS J.;DOBBS, JOSEPH M.;FISCHER, EUGENE B.;NEPOMUCENO, JOSE M. G.;PRASAD, RAVI