Claims
- 1. A process for producing a paper wrapper having reduced ignition proclivity characteristics when incorporated into a smoking article comprising the following steps:
providing a paper wrapper comprised of a paper web; applying a film-forming composition to said paper wrapper at particular locations, said film-forming composition forming treated discrete areas on said wrapper, said discrete areas separated by untreated areas, said film-forming composition comprising an aqueous composition, said film-forming composition containing a film-forming material and a particulate, substantially non-reactive inorganic filler, said treated discrete areas reducing ignition proclivity, said treated areas reducing ignition proclivity by reducing oxygen to a smoldering coal of the cigarette as the coal burns and advances into said treated areas.
- 2. A process as defined in claim 1, wherein the film-forming material comprises an alginate, a pectin, a silicate, a cellulose derivative, guar gum, a starch, a modified starch, polyvinyl acetate, or a polyvinyl alcohol.
- 3. A process as defined in claim 1, wherein the inorganic filler comprises a clay, calcium carbonate, or a metal oxide.
- 4. A process as defined in claim 2, wherein the inorganic filler comprises a clay, calcium carbonate, or a metal oxide.
- 5. A process as defined in claim 1, wherein the inorganic filler comprises calcium carbonate.
- 6. A process as defined in claim 2, wherein the inorganic filler comprises calcium carbonate.
- 7. A process as defined in claim 1, wherein multiple layers of the film-forming composition are applied to the paper wrapper for forming the treated discrete areas.
- 8. The process of claim 7, wherein said multiple layers are applied to the paper wrapper using a method selected from the group consisting of flexography, direct gravure printing, and offset gravure printing.
- 9. The process as in claim 1, wherein said treated areas comprise a plurality of discrete circumferential bands disposed longitudinally along said smoking article.
- 10. The process of claim 1, wherein said film-forming composition comprises an alginate.
- 11. The process of claim 1, wherein said film-forming composition comprises a pectin.
- 12. The process of claim 1, wherein said film-forming composition comprises a silicate.
- 13. The process of claim 1, wherein said film-forming composition comprises a polyvinyl alcohol.
- 14. The process of claim 1, wherein the film-forming composition comprises a starch.
- 15. The process of claim 1, wherein the film-forming composition comprises a cellulose derivative.
- 16. The process of claim 1, wherein the paper wrapper has a permeability of at least about 60 Coresta prior to applying said film-forming composition.
- 17. The process of claim 16, wherein said paper wrapper has a permeability of less than about 20 Coresta within the treated discrete areas.
- 18. The process of claim 1, wherein the treated discrete areas have a BMI of from about 1 cm−1 to about 8 cm−1.
- 19. A process for producing a smoking article comprising the step of surrounding a tobacco column with the paper wrapper defined in claim 1.
- 20. A smoking article having reduced ignition proclivity characteristics comprising:
a column comprising a tobacco; and a paper wrapper surrounding the column of the tobacco, the paper wrapper including discrete areas treated with an aqueous film-forming composition, the treated areas being separated by untreated areas, the film-forming composition comprising a film-forming material and a substantially non-reactive inorganic filler, the treated areas reducing ignition proclivity by reducing oxygen to a smoldering coal of the smoking article as the coal burns and advances into the treated areas.
- 21. A smoking article as defined in claim 20, wherein the film-forming material comprises an alginate, a pectin, a silicate, a cellulose derivative, guar gum, a starch, a modified starch, polyvinyl acetate, or a polyvinyl alcohol.
- 22. A smoking article as defined in claim 20, wherein the inorganic filler comprises a clay, calcium carbonate, or a metal oxide.
- 23. A smoking article as defined in claim 21, wherein the inorganic filler comprises a clay, calcium carbonate, or a metal oxide.
- 24. A smoking article as defined in claim 20, wherein the inorganic filler comprises calcium carbonate.
- 25. A smoking article as defined in claim 21, wherein the inorganic filler comprises calcium carbonate.
- 26. A smoking article as defined in claim 20, wherein the treated areas comprise multiple layers, at least one layer comprising the film-forming composition.
- 27. The smoking article as defined in claim 20, wherein said treated areas comprise a plurality of discrete circumferential bands disposed longitudinally along said smoking article.
- 28. The smoking article as defined in claim 20, wherein said film-forming composition comprises an alginate.
- 29. The smoking article as defined in claim 20, wherein said film-forming composition comprises a pectin.
- 30. The smoking article as defined in claim 20, wherein said film-forming composition comprises a silicate.
- 31. The smoking article as defined in claim 20, wherein said film-forming composition comprises a polyvinyl alcohol.
- 32. The smoking article as defined in claim 20, wherein the film-forming composition comprises a starch.
- 33. The smoking article as defined in claim 20, wherein the film-forming composition comprises a cellulose derivative.
- 34. The smoking article as defined in claim 20, wherein the paper wrapper has a permeability of at least about 60 Coresta prior to is applying said film-forming composition.
- 35. The smoking article as defined in claim 34, wherein said paper wrapper has a permeability of less than about 20 Coresta within the treated discrete areas.
- 36. The smoking article as defined in claim 20, wherein the treated discrete areas have a BMI of from about 1 cm−1 to about 8 cm−1.
- 37. 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 smokeable filler, the paper web including discrete areas treated with a film-forming composition, the treated areas being separated by untreated areas, the film-forming composition comprising an aqueous composition containing a film-forming material and a substantially non-reactive inorganic filler, the filler comprising a clay, calcium carbonate, or a metal oxide, the film-forming material comprising an alginate, a pectin, a silicate, a cellulose derivative, guar gum, a starch, a modified starch, polyvinyl acetate, or a polyvinyl alcohol, the treated areas reducing the ignition proclivity of a smoking article incorporating the wrapper.
- 38. The paper wrapper as defined in claim 37, wherein the paper wrapper has a permeability of at least about 60 Coresta prior to applying said film-forming composition.
- 39. The paper wrapper as defined in claim 37, wherein the film-forming material comprises an alginate.
- 40. The paper wrapper as defined in claim 37, wherein the filler comprises calcium carbonate.
RELATED APPLICATIONS
[0001] The present application is a Continuation Application of U.S. patent application Ser. No. 10/054,744, filed on Nov. 13, 2001, which is based upon a Provisional Application having U.S. Patent Application Serial No. 60/248,061, filed on Nov. 13, 2000.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60248061 |
Nov 2000 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
10054744 |
Nov 2001 |
US |
Child |
10813107 |
Mar 2004 |
US |