Tubular elements for smoking articles
US11044939B2 · kind B2 · utility
0Cited by
5References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 25, 2016 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Mar 24, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1393
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
There is provided a tubular element for use in the manufacture of a filter of a smoking article, the tubular element comprising a first and a second layer wound of substantially continuous strips of a cellulose-fibre-based web material. The strips have predetermined thickness (T) and width (W). The web material is coated on a first surface with an activatable polymer and the first surface of the web material in the first layer faces the first surface of the web material in the second layer. An external diameter of the tubular element is substantially uniform over a given length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.