Wrapper for cigarette manufacture includes transversely extending band regions applied by a printing technique, such as gravure printing. The band regions comprise starch, an anti-wrinkling agent such as 1,2 propylene glycol or glycerin, and optionally calcium carbonate. Any suitable printing techni
Wrapper for cigarette manufacture includes transversely extending band regions applied by a printing technique, such as gravure printing. The band regions comprise starch, an anti-wrinkling agent such as 1,2 propylene glycol or glycerin, and optionally calcium carbonate. Any suitable printing technique can be used to apply the aqueous solution to the banded regions. The pattern of banded regions may be bands, stripes, two-dimensional arrays, undulated regions, and the like along and/or around the tobacco rod. The pattern can be applied in one or more layers. The pattern may be configured so that when a smoking article is placed on a substrate, at least two longitudinal locations along the length of the tobacco rod have film-forming compound located only on sides of the smoking article not in contact with the substrate.
대표청구항▼
1. A wrapper of a smoking article such as a cigarette, comprising: a base web having a longitudinal direction and a transverse direction;a single layer of add-on material applied directly to the base web as an aqueous starch solution, in a pattern, said base web being essentially free of the add-on
1. A wrapper of a smoking article such as a cigarette, comprising: a base web having a longitudinal direction and a transverse direction;a single layer of add-on material applied directly to the base web as an aqueous starch solution, in a pattern, said base web being essentially free of the add-on material outside the pattern; andthe add-on material including starch in an amount in the range of about 14% to about 26% by weight of solution and propylene glycol at least about 6.4% by weight of solution for controlling creasing in the wrapper such that a bobbin of said wrapper is essentially free of such creases. 2. The wrapper paper of claim 1, wherein the propylene glycol is operable to relax shrinkage in the base web during drying. 3. The wrapper paper of claim 2, wherein the propylene glycol relaxes shrinkage in the base web in the transverse direction. 4. The wrapper paper of claim 1, wherein the anti-wrinkling means is selected from the group consisting of propylene glycol; and 1,2 propylene glycol. 5. The wrapper paper of claim 1, wherein the pattern includes a plurality of banded regions extending transversely and spaced longitudinally along the wrapper paper. 6. The wrapper paper of claim 5, wherein: the banded regions have a leading edge and a trailing edge, andthe banded regions are applied to the base web such that the leading and trailing edges receive add-on material a first application rate, and such that a zone exists where less add-on material is applied than at the leading and trailing edges. 7. The wrapper paper of claim 5, wherein: the banded regions have a leading edge and a trailing edge;the banded regions are applied to the base web such that the leading and trailing edges receive add-on material a first application rate, and such that a zone exists between the leading and trailing edges; andthe zone extends transversely of the base web and receives no add-on material. 8. The wrapper paper of claim 5, wherein: the banded regions have a first edge and a second edge;the banded regions are applied to the base web such that the first and second edges receive add-on material a first application rate, and such that a zone exists between the first and second edges; andthe zone extends longitudinally of the base web and receives no add-on material. 9. The wrapper paper of claim 6, wherein the zone extends both longitudinally of the base web and transversely of the base web. 10. The wrapper paper of claim 5, wherein the banded regions extend at an angle greater than 0° and less than 90°. 11. The wrapper paper of claim 5, wherein the banded regions include an edge which is undulated. 12. The wrapper paper of claim 5, wherein the banded regions include an edge which crenellated. 13. The wrapper paper of claim 5, wherein the banded regions include an edge shaped generally as a sawtooth. 14. The wrapper paper of claim 1, wherein the pattern includes an array of patches extending transversely and longitudinally on the base web. 15. The wrapper paper of claim 14, wherein the array of patches includes a plurality of similar substantially geometric objects. 16. The wrapper paper of claim 15, wherein the geometric objects are substantially quadrilateral objects. 17. The wrapper paper of claim 15, wherein the geometric objects are substantially triangular objects. 18. The wrapper paper of claim 1, wherein the add-on material is applied as a single layer. 19. The wrapper paper of claim 1, wherein the add-on material is applied in at least two layers. 20. The wrapper paper of claim 19, wherein add-on material has one layer including calcium carbonate. 21. The wrapper paper of claim 20, wherein add-on material containing calcium carbonate is applied to the base web, and add-on material substantially free of calcium carbonate is applied to the add-on material containing calcium carbonate. 22. The wrapper paper of claim 1, wherein the add-on material is applied to the base web by printing. 23. The wrapper paper of claim 1, wherein the base web has a permeability of greater than about 20 CORESTA. 24. The wrapper paper of claim 21, wherein the base web has a permeability of less than about 100 CORESTA. 25. The wrapper paper of claim 1, wherein the base web transverse direction shrinkage does not exceed about 0.36%. 26. A smoking article such as a cigarette having desirable ignition propensity characteristics, comprising: a quantity of tobacco;a wrapper paper surrounding the quantity of tobacco and defining a tobacco rod;a single layer of add-on material directly applied to the wrapper paper in a pattern, the wrapper paper being essentially free of the add-on material outside the pattern, the add-on material having been applied as an aqueous starch solution including an anti-wrinkling means for controlling creasing, wherein the solution includes about 14% to about 26% starch by weight of solution, and propylene glycol at least about 6.4% by weight of solution. 27. The smoking article of claim 26, wherein the tobacco rod has a mouth end, and a filter is attached to the mouth end. 28. The smoking article of claim 26 having an ignition propensity value less than about 25. 29. The smoking article of claim 26 having a self-extinction value less than about 50. 30. The smoking article of claim 26 having an ignition propensity value less than about 25 and a self-extinction value less than about 50. 31. The smoking article of claim 26, wherein the anti-wrinkling agent is selected from the group consisting of propylene glycol; and 1,2 propylene glycol. 32. The smoking article of claim 26, wherein: the tobacco rod includes a lit end; andthe pattern includes at least one banded region extending circumferentially around the tobacco rod, and spaced longitudinally between the lit end and the mouth end of the tobacco rod. 33. The smoking article of claim 32, wherein: the banded region includes a leading edge and a trailing edge, andthe banded region is applied to the base web such that the leading and trailing edges receive add-on material a first application rate, and such that a zone exists where less add-on material is applied than at the leading and trailing edges. 34. The smoking article of claim 33, wherein the zone extends circumferentially around the tobacco rod and receives no add-on material. 35. The smoking article of claim 34, wherein the zone extends longitudinally of the tobacco rod and receives no add-on material. 36. The smoking article of claim 34, wherein the zone extends both longitudinally of the tobacco rod and circumferentially of the tobacco rod. 37. The smoking article of claim 33, wherein the banded regions helically around the tobacco rod. 38. The smoking article of claim 33, wherein the banded region includes an edge which is undulated. 39. The smoking article of claim 33, wherein the banded region includes an edge which crenellated. 40. The smoking article of claim 33, wherein the banded region includes an edge shaped generally as a sawtooth. 41. The smoking article of claim 26, wherein the pattern includes an array of patches extending circumferentially and longitudinally along the tobacco rod. 42. The smoking article of claim 41, wherein the array of patches includes a plurality of similar substantially geometric objects. 43. The smoking article of claim 42, wherein the geometric objects are substantially quadrilateral objects. 44. The smoking article of claim 42, wherein the geometric objects are substantially triangular objects. 45. The smoking article of claim 26, wherein add-on material has one layer including calcium carbonate. 46. The smoking article of claim 26, wherein the add-on material is applied to the base web by printing. 47. The smoking article of claim 26, wherein the base web has a permeability of greater than about 20 CORESTA. 48. The smoking article of claim 26, wherein the base web has a permeability of less than about 100 CORESTA. 49. The smoking article of claim 26, wherein the pattern includes a first plurality of patches and a second plurality of patches arranged along spiral paths around the tobacco rod. 50. The smoking article of claim 49, wherein the tobacco rod has an axis;a patch of the first plurality is symmetrically spaced from a corresponding patch of the second plurality relative to the axis of the tobacco rod. 51. The smoking article of claim 50, wherein: each patch of the first plurality is symmetrically spaced from a corresponding patch of the second plurality relative to the axis of the tobacco rod;when the smoking article is placed on a substrate that substantially obstructs airflow to the smoking article in the vicinity of a first side of the smoking article, no patch of the first plurality and no patch of the second plurality is located in contact with the substrate at a first longitudinal location of the smoking article, the smoking article self-extinguishes when an advancing burn line reaches the first longitudinal location, and wherein, when the smoking article is not supported by a substrate, the advancing burn line does not self-extinguish at the first longitudinal location. 52. The smoking article of claim 26 wherein the tobacco rod has a non-circular cross-section. 53. A wrapper paper for a smoking article, comprising: a base web;at least one region on the base web to which add-on material has been directly applied, said base web essentially free of the add-on material outside of the at least one region;a single layer of the add-on material applied as an aqueous starch solution having about 14% to about 26% starch by weight of solution; means for controlling creasing comprising 1,2 propylene glycol at least about 6.4% by weight of solution; and calcium carbonate in the range of about 0% to about 26% by weight of solution. 54. A wrapper paper for a smoking article such as a cigarette, comprising: a base web having a longitudinal direction and a transverse direction;a single layer of add-on material applied directly to the base web as an aqueous starch solution, in a pattern, said base web being essentially free of the add-on material outside the pattern; andthe add-on material including starch in an amount in the range of about 14% to about 26% and propylene glycol at least about 6.4% by weight of solution for controlling creasing and being operable to reduce the tendency of the web to shrink. 55. The wrapper paper of claim 54, wherein the propylene glycol is operable to relax shrinkage in the base web during drying. 56. The wrapper paper of claim 54, wherein the propylene glycol comprises 1,2 propylene glycol. 57. The wrapper paper of claim 54, wherein the pattern includes a plurality of banded regions extending transversely and spaced longitudinally along the wrapper paper. 58. The wrapper paper of claim 57, wherein: the banded regions have a leading edge and a trailing edge, andthe banded regions are applied to the base web such that the leading and trailing edges receive add-on material a first application rate, and such that a zone exists where less add-on material is applied than at the leading and trailing edges. 59. The wrapper paper of claim 58, wherein the zone extends both longitudinally of the base web and transversely of the base web. 60. The wrapper paper of claim 57, wherein: the banded regions have a leading edge and a trailing edge;the banded regions are applied to the base web such that the leading and trailing edges receive add-on material a first application rate, and such that a zone exists between the leading and trailing edges; andthe zone extends transversely of the base web and receives no add-on material. 61. The wrapper paper of claim 57, wherein: the banded regions have a first edge and a second edge;the banded regions are applied to the base web such that the first and second edges receive add-on material a first application rate, and such that a zone exists between the first and second edges; andthe zone extends longitudinally of the base web and receives no add-on material. 62. The wrapper paper of claim 57, wherein the banded regions extend at an angle greater than 0° and less than 90°. 63. The wrapper paper of claim 57, wherein the banded regions include an edge which is undulated. 64. The wrapper paper of claim 57, wherein the banded regions include an edge which crenellated. 65. The wrapper paper of claim 57, wherein the banded regions include an edge shaped generally as a sawtooth. 66. The wrapper paper of claim 54, wherein the pattern includes an array of patches extending transversely and longitudinally on the base web. 67. The wrapper paper of claim 66, wherein the array of patches includes a plurality of similar substantially geometric objects. 68. The wrapper paper of claim 67, wherein the geometric objects are substantially quadrilateral objects. 69. The wrapper paper of claim 67, wherein the geometric objects are substantially triangular objects. 70. The wrapper paper of claim 54, wherein the add-on material is applied to the base web by printing. 71. The wrapper paper of claim 54, wherein the base web has a permeability of greater than about 20 CORESTA. 72. The wrapper paper of claim 71, wherein the base web has a permeability of less than about 100 CORESTA. 73. The wrapper paper of claim 54, wherein the base web transverse direction shrinkage does not exceed about 0.36%. 74. The wrapper paper of claim 54, wherein add-on material has one layer including calcium carbonate. 75. A wrapper paper of a smoking article, comprising: a base web having a longitudinal direction and a transverse direction;a single layer of add-on material applied directly to the base web as an aqueous starch solution and dried, said pattern configured to establish an ignition propensity performance in said base web, said base web being essentially free of the add-on material outside the pattern; andthe add-on material including starch in an amount in the range of about 14% to about 26% by weight of solution and propylene glycol at least about 6.4% by weight of solution and sufficient to control creasing in the wrapper. 76. The wrapper paper of claim 75, wherein the propylene glycol comprises 1,2 propylene glycol. 77. A wrapper paper of a smoking article, comprising: a base web having a longitudinal direction and a transverse direction;a single layer of add-on material in a condition of having been applied directly to the base web as an aqueous starch solution and dried, in a pattern, said base web being essentially free of the add-on material outside the pattern, said pattern configured to establish an ignition propensity performance in the wrapper;the add-on material including an effective amount of an anti-wrinkling means for controlling creasing in the wrapper; andsaid add-on material comprises a starch solution having about 14% to about 26% starch by weight of solution, and the anti-wrinkling means consists essentially of propylene glycol at least about 6.4% by weight of solution. 78. A wrapper paper of a smoking article such as a cigarette, comprising: a base web having a longitudinal direction and a transverse direction;a single layer of add-on material applied directly to the base web as an aqueous starch solution, in a pattern to improve IP performance of the smoking article, said base web being essentially free of the add-on material outside the pattern; andthe add-on material including starch in an amount in the range of about 14% to about 26% by weight of solution and propylene glycol at least about 6.4% by weight of solution for controlling creasing in the wrapper such, when dried on the base web, the propylene glycol is present in the range of about 0.36 to about 0.9 gsm.
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이 특허에 인용된 특허 (168)
Wermers Vilas (Lemont IL) Romanovich Michael (Cherry Hill NJ), Adhesive composition for cigarette seams.
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