Tobacco smoke filter elements
AssigneeBritish-American Tobacco Company Limited
InventorsKevin Gerard MacAdam, Rosemary Elizabeth O'Reilly, Nigel David Warren
Life of this patent
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Abstract
This invention relates to the provision in a cigarette filter element of a capsule containing a deodorizer. The capsule is resistant to the handling endured before and during smoking, yet ruptures to release or expose the deodorizer upon extinguishing of the smoked cigarette. The deodorizer may comprise neutralizing or masking agents, or mixtures of both.
Claims20
A smoking filter element comprising a filtration material and a capsule including a deodoriser wherein said capsule incorporates one or more layers, said capsule susceptible to breakage to expose said deodoriser within said filter element wherein the contents of each layer mix and produce a reaction gas product.
A smoking article filter element according to claim
- wherein said capsule is comprised of glass tubing, think-walled aluminum tubing, hollow foodstuff material, Plaster of Paris, an inorganic insoluble agent, or extruded hollow tubing of reconstituted tobacco material.
A smoking article filter element according to claim
- wherein said capsule comprises a material having a melting point above the temperature of hot smoke within the filter element.
A method of deodorizing smoking article filter elements compnsing:
- providing a filter element including a capsule comprising a deodorizer, the capsule incorporating one or more layers, and
- exposing the, deodorizer within the filter after smoking by applying a stubbing out action wherein the contents of each layer mix and produce a reaction gas product.
Dependencies are inferred from the claim text.