Smoking Article Filter
AssigneeBritish American Tobacco (Investments) Limited
InventorsPeter Rex White, Martin Graham Duke, William David Lewis
Life of this patent
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Abstract
A filter element having a longitudinally extending core and a wrapper (8) engaged around the core, wherein the core comprise filtration material (6) and optionally a particulate material (7) interspersed in the filtration material, and the wrapper (8) comprises a particulate material (9) adhered to two or more portions of said wrapper (8) wherein at least one of said two or more portions extends over the full longitudinal length of said wrapper. Also taught herein is a smoking article comprising said filter element and/or filter comprising said filter element.
Claims18
A filter element having a longitudinally extending core and a wrapper engaged around the core, wherein the core comprises filtration material and the wrapper comprises a particulate material adhered to two or more portions of said wrapper, wherein said two or more portions are spaced circumferentially from one another and at least one of said two or more portions extends over the full longitudinal length of said wrapper, and the particulate material comprises one or more sorbents capable of absorbing vapour phase constituents of smoke.
A filter element substantially as hereinbefore described with reference to the accompanying figures.
A filter substantially as hereinbefore described with reference to the accompanying figures.
A smoking article substantially as hereinbefore described with reference to the accompanying figures.
Dependencies are inferred from the claim text.