Water-dispersible sheet and cigarette using the same
US5849153A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 30, 1996 |
| Grant date | Dec 15, 1998 |
| Priority date | — |
| Expiry date | Jul 30, 2016 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H19/44
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A water-dispersible sheet and a cigarette using the sheet are disclosed. The sheet comprises a water-resolvable base paper made from fibrous raw materials and a water-dispersible coating layer containing water-soluble polymer and an alkaline compound. The sheet is also produced through an impregnation treatment for a water-resolvable base paper with a coating mixture containing water-soluble polymer and an alkaline compound, wherein said water-resolvable base paper is made from a mixture of water-dispersible fibers and fibrous carboxymethyl cellulose acid or fibrous carboxyethyl cellulose acid. The gas-permeability of the water-dispersible sheet is controlled by the water-dispersible coating layer or the impregnation treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.