Cigarette paper comprising flaky filler
US9775378B2 · kind B2 · utility
1Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2014 |
| Grant date | Oct 3, 2017 |
| Priority date | — |
| Expiry date | May 22, 2035 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H27/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A cigarette paper contains pulp fibers and filler particles, whereby at least 20% of the filler particles, by mass or by particle number, have a flaked shape. The flaked filler particles have a length l, a width b and a thickness d, which correspond to the respective maximum extension in three mutually orthogonal spatial directions, whereby the length l as well as the width b are at least twice as large as the thickness d. The mass-specific median value d50 of the particle size distribution measured according to ISO 13317-3 is between 0.2 μm and 4.0 μm, and the flaked particles are formed by calcium carbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.