Aerosol generating articles
US11896048B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2019 |
| Grant date | Feb 13, 2024 |
| Priority date | — |
| Expiry date | Nov 21, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/0254
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A filter part (1) for use in an aerosol generating article and a method of manufacturing the filter part (1). The filter part (1) includes an aerosol permeable core (11) surrounded by a sleeve (12). The sleeve (12) is formed of linear, axially oriented fibres and the core (11) is formed of expanded, randomly oriented fibres. The method includes forming two or more strips (2a, 2b) into segments surrounding a conveying path, bringing the segments together into a sleeve former (7) to form the sleeve (12) and introducing loose fibres (52) between the segments upstream of the sleeve former (7) such that they are drawn therein in a random orientation and compressed between the segments as they are brought together to form a filter rod (8) with an aerosol permeable core (11) within the sleeve (12). The filter rod (8) is then cut to form the filter part (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.