Smoking article including flavour granules having permeable outer layer
US10426191B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2014 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Nov 6, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J13/04
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method for the production of a flavor granule for a smoking article comprises the steps of: a) forming an inner core by compaction of particles of herbaceous plant material; b) providing a coating suspension of colored binder particles comprising at least one colorant and at least one polymeric binder in a solvent; c) applying the coating suspension to the outer surface of the inner core to form an outer layer, wherein the coating suspension is applied to the inner core within a coating system and wherein within that coating system the vapor pressure of the solvent is greater than 5 kPa; and d) drying the outer layer to evaporate the solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.