Smoking articles with reduced ignition proclivity characteristics
AssigneeSchweitzer-Mauduit International, Inc.
InventorThomas A. Kraker
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Abstract
A process for reducing the permeability of a paper wrapper used in the construction of a smoking article is disclosed. The paper wrapper is treated with a film-forming composition that forms treated discrete areas on the wrapper. The treated discrete areas have a permeability within a predetermined range sufficient to reduce the ignition proclivity properties of a smoking article made with the wrapper. In accordance with the present invention, the film-forming composition contains a film-forming material. The film-forming material has a relatively low viscosity. In this manner, the film-forming composition can have a relatively high solids content and still be applied to the wrapper using conventional techniques, such as by using a gravure printer.
Claims20
A smoking article having reduced ignition proclivity characteristics comprising:
- a column comprising a smokable tobacco;
- and
- a paper wrapper surrounding the column of the smokable tobacco, the paper wrapper including discrete areas treated with a film-forming composition, the treated areas being separated by untreated areas, the treated areas having a permeability within a range sufficient to reduce ignition proclivity, the film-forming composition applied to the paper wrapper comprising a film-forming material contained in a solution in an amount sufficient for the solution to have a solids content of at least 6% by weight, the film-forming material having a viscosity of less than about 500 cP when present in a 3% by weight solution at 25° C., the film-forming material comprising an alginate.
A smoking article having reduced ignition proclivity characteristics comprising:
- a column comprising a smokable tobacco;
- and
- a paper wrapper surrounding the column of the smokable tobacco, the paper wrapper including discrete areas treated with a film-forming composition, the treated areas being separated by untreated areas, the treated areas having a permeability within a range sufficient to reduce ignition proclivity, the film-forming composition applied to the paper wrapper comprising a film-forming material contained in a solution in an amount sufficient for the solution to have a solids content of at least 6% by weight, the film-forming material having a viscosity of less than about 500 cP when present in a 3% by weight solution at 25° C. wherein the untreated areas of the paper wrapper have a permeability of greater than about 60 Coresta.
A paper wrapper for a smoking article that provides the smoking article with reduced ignition proclivity characteristics comprising:
- a paper web designed to surround a smokable filler, the paper web including discrete areas treated with a film-forming composition, the treated areas being separated by untreated areas, the treated areas having a permeability within a range sufficient to reduce ignition proclivity of a smoking article incorporating the wrapper, the film-forming composition applied to the paper wrapper comprising a film-forming material contained in a solution in an amount sufficient for the solution to have a solids content of at least 6% by weight, the film-forming material having a viscosity of less than about 500 cP when present in a 3% by weight solution at 25° C., the film-forming material comprising an alginate.
A paper wrapper for a smoking article that provides the smoking article with reduced ignition proclivity characteristics comprising:
- a paper web designed to surround a smokable filler, the paper web including discrete areas treated with a film-forming composition, the treated areas being separated by untreated areas, the treated areas having a permeability within a range sufficient to reduce ignition proclivity of a smoking article incorporating the wrapper, the film-forming composition applied to the paper wrapper comprising a film-forming material contained in a solution in an amount sufficient for the solution to have a solids content of at least 6% by weight, the film-forming material having a viscosity of less than about 500 cP when present in a 3% by weight solution at 25° . wherein the untreated areas of the paper wrapped have a permeability of greater than about 60 Coresta.
Dependencies are inferred from the claim text.