Method of producing tobacco flavored cigarette filter
US5269329A · kind A · utility
9Cited by
17References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1990 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Jul 9, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/14
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
There is disclosed a method of adding flavorant to cigarette filters. A cigarette filter is made by forming a filter web using non-woven web comprising thermoplastic meltblown fibers of filaments that are present as fused agglomerates in a number fraction exceeding 33 percent and wherein a majority of fiber crossings of agglomerates are weld points; adding tobacco extracts to the filter web such that the filter web contains between 10% and 110% tobacco extracts by weight of the filter web; adding glycerin or a glycerin-water mixture to the thus treated filter web; and forming the thus treated filter web into a rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.