Cigarette with wrapper having additive package

• US 5,220,930 A
• Filed: 02/26/1992
• Issued: 06/22/1993
• Est. Priority Date: 02/26/1992
• Status: Expired due to Term

• Current Assignee: R J Reynolds Tobacco Company (R. J. Reynolds Tobacco)
• Original Assignee: R J Reynolds Tobacco Company (R. J. Reynolds Tobacco)
• Inventors: Gentry, Jeffery S.
• Primary Examiner(s): Millin, V.
• Assistant Examiner(s): Pierce, William M.
• Application Number:
  US07/842,276
• Time in Patent Office: 482 Days
• Field of Search: 131/360, 131/331, 131/362, 131/365, 131/373, 131/374
• US Class Current: 131/365
• CPC Class Codes: A24B 15/282 by indirect addition of the chemical substances, e.g. in the wrapper, in the case
• CPC Class Codes: A24D 1/02 with special covers

Abstract

A cigarette includes a charge or roll of smokable material (e.g., tobacco cut filler) circumscribed by at least one layer of paper wrapping material to form a tobacco rod. A certain cigarette includes an outer wrapping material which circumscribes and overwraps an inner wrapping material. At least one paper wrapping material of the tobacco rod includes an additive package. The additive package includes at least one water soluble salt which is applied in a water soluble form. For example, a paper wrapper including wood pulp fiber and calcium carbonate filler material is treated with an aqueous solution of calcium acetate, potassium chloride and potassium acetate. The cigarette is capable of sustaining smolder under FTC smoking conditions while yielding very low levels of visible sidestream smoke.

Claims

1. A cigarette comprising a rod of smokable material contained in a circumscribing paper wrapping material in intimate contact with an additive package, the paper wrapping material comprising a cellulosic base web and an additive package including water soluble components, which additive package

(a) provides about 5 to about 40 percent of that paper wrapping material on a dry weight basis;

and

(b) includes (i) alkali metal ions and (ii) alkali earth metal ions, such that the ratio of equivalents of (i) to (ii) ranges from about 0.05 to about 1; and

(iii) inorganic anions and (iv) organic anions, such that the ratio of equivalents of (iii) to (iv) ranges from about 0.05 to about 0.7;

the equivalents of components (i) plus (ii) being equal to the equivalents of components (iii) plus (iv).

2. The cigarette of claim 1 wherein the paper wrapping material includes a cellulosic base web and at least one inorganic filler material.

3. The cigarette of claim 2 wherein the cellulosic base web comprises wood pulp and flax fibers.

4. The cigarette of claim 2 wherein the inorganic filler material includes calcium carbonate.

5. The cigarette of claim 2 wherein the paper wrapping material, absent of the additive package, includes about 65 to about 95 percent cellulosic material and about 5 to about 35 percent inorganic filler material, on a dry weight basis.

6. The cigarette of claim 2 wherein the organic filler material consists essentially of calcium carbonate.

7. The cigarette of claim 4 wherein the additive package includes magnesium ions.

8. The cigarette of claim 1 or 2 wherein the additive package includes a mixture of magnesium ions and calcium ions.

9. The cigarette of claim 8 wherein the additive package includes potassium ions.

10. The cigarette of claim 1 or 2 wherein the additive package includes potassium ions.

11. The cigarette of claim 1 or 2 wherein the additive package includes chloride ions.

12. The cigarette of claim 1 or 2 wherein the additive package includes acetate ions.

13. The cigarette of claim 1 or 2 wherein more than 75 weight percent of the additive package in intimate contact with the paper wrapping material has a water soluble form.

14. The cigarette of claim 1 or 2 wherein the organic anions are acetate ions, propionate ions, formate ions or lactate ions.

15. The cigarette of claim 1 or 2 wherein the additive package includes calcium, potassium, acetate and chloride ions.

16. The cigarette of claim 1 or 2 wherein the inorganic anions are chloride ions, sulfate ions, nitrate ions, phosphate ions or borate ions.

17. The cigarette of claim 1 or 2 wherein alkali earth metal ions include calcium ions.

18. The cigarette of claim 1 or 2 wherein the paper wrapping material comprising the additive package exhibits an inherent porosity of less than about 30 CORESTA units.

19. The cigarette of claim 1 or 2 wherein the additive package provides about 10 to about 35 percent of the dry weight of the paper wrapping material.

20. The cigarette of claim 1 or 2 wherein the additive package provides about 15 to about 30 percent of the dry weight of the paper wrapping material.

21. The cigarette of claim 1 or 2 wherein the additive package is such that the ratio of equivalents of (i) to (ii) ranges from about 0.2 to about 0.5;

and the ratio of equivalents of (iii) to (iv) ranges from about 0.1 to about 0.3.

22. The cigarette of claim 1 or 2 wherein the smokable material is circumscribed by a further wrapping material, and the further wrapping material is circumscribed by the paper wrapping material.

23. The cigarette of claim 22 wherein the further wrapping material includes cellulosic material and at least one inorganic filler material.

24. The cigarette of claim 23 wherein the inorganic filler material of the further wrapping material includes calcium carbonate.

25. The cigarette of claim 23 wherein the inorganic filler material of the further wrapping material includes magnesium hydroxide.

26. The cigarette of claim 22 wherein the paper wrapping material includes wood pulp as a cellulosic base web component, and calcium carbonate as an inorganic filler material component.

27. The cigarette of claim 22 wherein the paper wrapping material comprises at least one inorganic filler material which includes calcium carbonate.

28. The cigarette of claim 22 wherein the additive package provides about 10 to about 35 percent of the paper wrapping material on a dry weight basis.

29. The cigarette of claim 22 wherein the additive package provides about 15 to about 30 percent of the paper wrapping material on a dry weight basis.

30. The cigarette of claim 22 wherein the additive package is such that the ratio of equivalents of (i) to (ii) ranges from about 0.2 to about 0.5, and the ratio of equivalents of (iii) to (iv) ranges from about 0.1 to about 0.3

31. The cigarette comprising a rod of smokable material contained in a circumscribing paper wrapping material in intimate contact with an additive package, the paper wrapping material comprising a cellulosic base web and an additive package including water soluble components, which additive package

(a) provides about 5 to about 40 percent of that paper wrapping material on a dry weight basis;

and

(b) includes (i) alkali earth metal ions; and

(ii) inorganic anions and (iii) organic anions, such that the ratio of equivalents of (ii) to (iii) ranges from about 0.05 to about 0.7;

the equivalents of component (i) being equal to the equivalents of components (ii) plus (iii).

32. The cigarette of claim 31 wherein the paper wrapping material includes a cellulosic base web and at least one inorganic filler material.

33. The cigarette of claim 32 wherein the cellulosic base web comprises wood pulp and flax fibers.

34. The cigarette of claim 32 wherein the inorganic filler material includes calcium carbonate.

35. The cigarette of claim 32 wherein the paper wrapping material, absent of the additive package, includes about 65 to about 95 percent cellulosic material and about 5 to about 35 percent inorganic filler material, on a dry weight basis.

36. The cigarette of claim 32 wherein the organic filler material consists essentially of calcium carbonate.

37. The cigarette of claim 31 or 32 wherein more than 75 weight percent of the additive package in intimate contact with the paper wrapping material has a water soluble form.

38. The cigarette of claim 31 or 32 wherein the organic anions are acetate ions, propionate ions, formate ions or lactate ions.

39. The cigarette of claim 31 or 32 wherein the inorganic anions are chloride ions, sulfate ions, nitrate ions, phosphate ions or borate ions.

40. The cigarette of claim 31 or 32 wherein alkali earth metal ions include calcium ions.

41. The cigarette of claim 31 or 32 wherein the additive package includes a mixture of magnesium ions and calcium ions.

42. The cigarette of claim 31 or 32 wherein the additive package includes chloride ions.

43. The cigarette of claim 31 or 32 wherein the additive package includes acetate ions.

44. The cigarette of claim 31 or 32 wherein the paper wrapping material comprising the additive package exhibits an inherent porosity of less than about 30 CORESTA units.

45. The cigarette of claim 31 or 32 wherein the additive package provides about 10 to about 35 percent of the dry weight of the paper wrapping material.

46. The cigarette of claim 31 or 32 wherein the additive package provides about 15 to about 30 percent of the dry weight of the paper wrapping material.

47. The cigarette of claim 31 or 32 wherein the additive package is such that the ratio of equivalents of (ii) to (iii) ranges from about 0.1 to about 0.3.

48. The cigarette of claim 31 or 32 wherein the smokable material is circumscribed by a further wrapping material, and the further wrapping material is circumscribed by the paper wrapping material.

49. The cigarette of claim 48 wherein the further wrapping material includes cellulosic material and at least one inorganic filler material.

50. The cigarette of claim 49 wherein the inorganic filler material of the further wrapping material includes calcium carbonate.

51. The cigarette of claim 49 wherein the inorganic filler material of the further wrapping material includes magnesium hydroxide.

52. The cigarette of claim 48 wherein the paper wrapping material includes wood pulp as a cellulosic base web component, and calcium carbonate as an inorganic filler material component.

53. The cigarette of claim 48 wherein the paper wrapping material comprises at least one inorganic filler material which includes calcium carbonate.

54. The cigarette of claim 48 wherein the additive package provides about 10 to about 35 percent of the paper wrapping material on a dry weight basis.

55. The cigarette of claim 48 wherein the additive package provides about 15 to about 30 percent of the paper wrapping material on a dry weight basis.

56. The cigarette of claim 48 wherein the additive package is such that the ratio of equivalents of (ii) to (iii) ranges from about 0.2 to about 0.5.

64. The cigarette of claim 54 or 58 wherein the organic filler material consists essentially of calcium carbonate.

57. A cigarette comprising a rod of smokable material contained in a circumscribing paper wrapping material in intimate contact with an additive package, the paper wrapping material comprising a cellulosic base web and an additive package including water soluble components, which additive package

(a) provides about 5 to about 40 percent of that paper wrapping material on a dry weight basis;

and

(b) includes (i) alkali metal ions and (ii) alkali earth metal ions, such that the ratio of equivalents of (i) to (ii) ranges from about 0.05 to about 1; and

(iii) organic anions;

the equivalents of components (i) plus (ii) being equal to the equivalents of component (iii).

58. The cigarette of claim 57 wherein the paper wrapping material includes a cellulosic base web and at least one inorganic filler material.

59. The cigarette of claim 58 wherein the inorganic filler material includes calcium carbonate.

60. The cigarette of claim 58 wherein the paper wrapping material, absent of the additive package, includes about 65 to about 95 percent cellulosic material and about 5 to about 35 percent inorganic filler material, on a dry weight basis.

61. The cigarette of claim 57 or 58 wherein more than 75 weight percent of the additive package in intimate contact with the paper wrapping material has a water soluble form.

62. The cigarette of claim 57 or 58 wherein the organic anions are acetate ions, propionate ions, formate ions or lactate ions.

63. The cigarette of claim 57 or 58 wherein alkali earth metal ions include calcium ions.

65. The cigarette of claim 57 or 58 wherein the additive package includes a mixture of magnesium ions and calcium ions.

66. The cigarette of claim 57 or 58 wherein the additive package includes potassium ions.

67. The cigarette of claim 57 or 58 wherein the paper wrapping material comprising the additive package exhibits an inherent porosity of less than about 30 CRESTA units.

68. The cigarette of claim 57 or 58 wherein the additive package provides about 10 to about 35 percent of the dry weight of the paper wrapping material.

69. The cigarette of claim 57 or 58 wherein the additive package provides about 15 to about 30 percent of the dry weight of the paper wrapping material.

70. The cigarette of claim 57 or 58 wherein the additive package is such that the ratio of equivalents of (i) to (ii) ranges from about 0.2 to about 0.5.

71. The cigarette of claim 57 or 58 wherein the smokable material is circumscribed by a further wrapping material, and the further wrapping material is circumscribed by the paper wrapping material.

72. The cigarette of claim 71 wherein the further wrapping material includes cellulosic material and at least one inorganic filler material.

73. The cigarette of claim 72 wherein the inorganic filler material of the further wrapping material includes calcium carbonate.

74. The cigarette of claim 71 wherein the inorganic filler material of the further wrapping material includes magnesium hydroxide.

75. The cigarette of claim 71 wherein the paper wrapping material includes wood pulp as a cellulosic base web component, and calcium carbonate as an inorganic filler material component.

76. The cigarette of claim 71 wherein the paper wrapping material comprises at least one inorganic filler material which includes calcium carbonate.

77. The cigarette of claim 71 wherein the additive package provides about 10 to about 35 percent of the paper wrapping material on a dry weight basis.

78. The cigarette of claim 71 wherein the additive package provides about 15 to about 30 percent of the paper wrapping material on a dry weight basis.

79. The cigarette of claim 71 wherein the additive package is such that the ratio of equivalents of (i) to (ii) ranges from about 0.2 to about 0.5.