Process for puffing tobacco

Details Process for puffing tobacco Process for puffing tobacco

1979-05-17

1981-05-12

Millin, V.

Tobacco

Tobacco treatment

Puffing

A24B 318

Patent

active

042665620

ABSTRACT:
Tobacco having at least about 6 percent moisture is impregnated with ammonia and carbon dioxide to introduce into the tobacco preferably from about 3 percent to about 6 percent by weight of ammonia and from about 3 percent to about 8 percent of carbon dioxide based on the weight of the tobacco. The impregnated tobacco is then heated for from about 5 to about 60 minutes at a temperature of from about 80.degree. to about 120.degree. C. in an open system to produce a tobacco product, having an OV of about 6% or less. The resulting tobacco product is, either with or without being bulked at room temperature, thereafter contacted with dry steam, preferably at low velocity, at a temperature which may be from about 100.degree. C. to about 150.degree. C., but is preferably from about 100.degree. C. to about 120.degree. C. for a time sufficient to puff the tobacco, preferably from about 1/4 to about 3 minutes. A humid gas, such as air of high humidity, may be used in place of the dry steam, in which case the temperature may be between about 80.degree. C. and about 150.degree. C. and is preferably from about 80.degree. C. to about 120.degree. C.

REFERENCES:
patent: 3771533 (1973-11-01), Armstrong et al.

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