Cigarette with improved tobacco substrate
US6378528B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1999 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Sep 22, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24B15/28
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An improved substrate for use in smoking articles is produced by infusing aerosol forming material into tobacco. The infusion can take place in one or multiple steps. Preferably, about 10% to about 40% by weight of aerosol former, such as glycerin is infused into strip tobacco at elevated temperatures. The tobacco containing the aerosol former may then be dried, equilibrated to ambient conditions and/or blended with tobacco which does not have added aerosol former. Preferably the resulting material is again infused with an additional about 5% to about 15% by weight of aerosol former, at elevated temperatures. The new substrate material, and the method for making it, result in a substrate which has reduced migration of aerosol former and substantially improved manufacturing characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.