Loading patent…
AssigneeBritish American Tobacco (Investments) Limited
InventorsYahia Lemmouchi, Andrew Davis, Barry Dimmick, Martin Dauner, Christoph Rieger, Andreas Ullrich
Estimating the term…
The present invention relates to filter material for inclusion in a smoking article, said filter material comprising a base material comprising or made from fibres having a first diameter or mean diameter, and fine fibres having a diameter or mean diameter which is smaller than the first diameter, wherein the filter material comprises more than 10% by weight and/or by volume fine fibres or wherein the diameter or mean diameter of the fine fibres is between about 1.0 μm and about 1.5 μm. The invention also relates to filters or filter elements comprising the filter material, smoking articles comprising the same, and use of the filter material in smoke filtration.
A filter material for inclusion in a smoking article, wherein the filter material comprises a base material comprising or made from fibres having a first diameter or mean diameter, and fine fibres having a diameter or mean diameter which is smaller than the first diameter and which is between 3 μm and 10 μm, wherein the filter material comprises more than 10% by weight and/or by volume fine fibres and wherein the fine fibres comprise cellulose acetate and/or derivatives thereof.
A filter material for inclusion in a smoking article, wherein the filter material comprises a base material comprising or made from fibres having a first diameter or mean diameter, and fine fibres having a diameter or mean diameter which is smaller than the fibres of the base material, wherein the diameter or mean diameter of the fine fibres is between about 1.0 μm and about 1.5 μm and wherein the fine fibres comprise cellulose acetate and/or derivatives thereof.
A filter material for inclusion in a smoking article, wherein the filter material consists of fine fibres having a diameter or mean diameter of between about 3 μm and about 10 μm and wherein the fine fibres comprise cellulose acetate and/or derivatives thereof.
(canceled)
Dependencies are inferred from the claim text.