Method for uniform incorporation of additives into tobacco
US4243056A · kind A · utility
21Cited by
0References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1979 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Jan 12, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24B3/182
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method for uniformly impregnating tobacco with additives, particularly flavoring agents, is disclosed. The method comprises contacting tobacco with liquid carbon dioxide having dispersed therein a flavoring agent or other additive; exposing the liquid carbon dioxide absorbed by the tobacco to conditions whereby it is converted to solid carbon dioxide; and thereafter allowing the solid carbon dioxide to evaporate. When the solid carbon dioxide is caused to vaporize rapidly, for example, by means of heat, the disclosed method will simultaneously impregnate tobacco with an additive and expand tobacco.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.