Sheet tobacco
US6761175B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 4, 2001 |
| Grant date | Jul 13, 2004 |
| Priority date | — |
| Expiry date | Dec 4, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2317/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Sheet tobacco according to the present invention includes a carrier sheet made of nonwoven plant fibers, and a tobacco powder layer formed on the carrier sheet and containing a powder mixture of tobacco lamina powder and binder powder. In a sheet tobacco manufacturing process according to the present invention, a carrier sheet of plant fibers is formed by a nonwoven fabric production process, a tobacco powder layer is formed by spreading the powder mixture on the carrier sheet, and a cover sheet of plant fibers is optionally formed on the tobacco powder layer. Subsequently, the carrier sheet, the tobacco powder layer and the optical cover sheet are all together subjected to heating and pressing, thereby producing sheet tobacco with a two- or three-layer structure. The present invention also provides a manufacturing system for carrying out the sheet tobacco manufacturing process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.