Smoking articles and wrapping materials therefor

Abstract

A smoking article including a smokable rod manufactured using a paper wrapping material having an additive material applied thereto as a pattern. The additive material is applied as aqueous coating formulation incorporating an alginate and a sugar.

1 . A wrapping material for a smokable rod of a cigarette, the wrapping material comprising a base sheet and an additive material applied to at least one major surface thereof, the additive material comprising alginate and sugar.  
     
     
         2 . The wrapping material of  claim 1  wherein the alginate includes sodium alginate.  
     
     
         3 . The wrapping material of  claim 1  wherein the alginate within the additive material makes up at least about 20 percent of the combined weight of the alginate and sugar within the additive material, and the sugar within the additive material makes up at least about 20 percent of the combined weight of the alginate and sugar within the additive material.  
     
     
         4 . The wrapping material of  claim 1  wherein the alginate exhibits a viscosity of about 20 centipoise to about 100 centipoise, when present in a 3 percent by weight solution in water at 25° C.  
     
     
         5 . The wrapping material of  claim 1  wherein the additive material applied to the wrapping material is such that the additive material on the wrapping material possesses a dry weight application of at least about 1 g/m 2 .  
     
     
         6 . The wrapping material of  claim 1  wherein the additive material applied to the wrapping material is such that the additive material on the wrapping material possesses a dry weight application of least about 2 g/m 2 .  
     
     
         7 . The wrapping material of  claim 1  wherein the additive material applied to the wrapping material is such that the additive material on the wrapping material possesses a dry weight application of less than about 7 g/m 2 .  
     
     
         8 . The wrapping material of  claim 1  wherein the additive material applied to the wrapping material is such that the additive material on the wrapping material possesses a dry weight application of less than about 4 g/m 2 .  
     
     
         9 . The wrapping material of  claim 1  wherein wrapping material wherein the additive material is applied thereto exhibits an inherent porosity from about 3 CORESTA units to about 6 CORESTA units.  
     
     
         10 . The wrapping material of  claim 1  having a longitudinal axis, wherein the additive material is applied to the wrapping material as a series of spaced bands that extend across the wrapping material generally perpendicular to the longitudinal axis of the wrapping material.  
     
     
         11 . The wrapping material of  claim 1 , comprising a longitudinal axis, wherein the additive material is applied to the wrapping material as a series of spaced bands that extend across the wrapping material generally perpendicular to the longitudinal axis of the wrapping material, and wherein each band has a width of about 2 mm to about 8 mm, and wherein the bands are spaced about 10 mm to about 50 mm from one another.  
     
     
         12 . The wrapping material of  claim 1 , wherein a region of the wrapping material with a band of the additive material has a diffusion capacity of at least about 0.5 cm/sec.  
     
     
         13 . The wrapping material of  claim 13 , wherein the additive material is coated at a coating weight of at least about 2 g/m 2 , based on the dry weight of the additive material.  
     
     
         14 . The wrapping material of  claim 1 , wherein the additive material includes a component selected from the group consisting of humectant, wetting agent, preservative, and a combination thereof.  
     
     
         15 . The wrapping material of  claim 1 , wherein the sugar includes a refined or unrefined sugar selected from the group consisting of sucrose, dextrose, rhamnose, glucose, fructose, maltose, melezitose, lactose, galactose, mannose, cane sugar, corn syrup, honey, and any combination thereof.  
     
     
         16 . A smoking article having a smokable rod possessing an outer wrapping material, the wrapping material of that smokable rod comprising a base sheet and an additive material applied to at least one major surface thereof, the additive material being composed of alginate and sugar.  
     
     
         17 . The smoking article of  claim 16  wherein the alginate includes sodium alginate.  
     
     
         18 . The smoking article of  claim 16  wherein the alginate within the additive material makes up at least about 65 percent of the combined weight of the alginate and sugar within the additive material, and the sugar within the additive material makes up at least about 5 percent of the combined weight of the alginate and sugar within the additive material.  
     
     
         19 . The smoking article of  claim 16  wherein the alginate exhibits a viscosity of about 20 centipoise to about 100 centipoise, when present in a 3 percent by weight solution in water at 25° C.  
     
     
         20 . The smoking article of  claim 16  wherein the additive material applied to the wrapping material is such that the additive material on the wrapping material possesses a dry weight application of least about 1 g/m 2 .  
     
     
         21 . The smoking article of  claim 16  wherein the additive material applied to the wrapping material is such that the additive material on the wrapping material possesses a dry weight application of least about 2 g/m 2 .  
     
     
         22 . The smoking article of  claim 16  wherein the additive material applied to the wrapping material such that the additive material on the wrapping material possesses a dry weight application of less than about 7 g/m 2 .  
     
     
         23 . The smoking article of  claim 16  wherein the additive material applied to the wrapping material such that the additive material on the wrapping material possesses a dry weight application of less than about 4 g/m 2 .  
     
     
         24 . The smoking article of  claim 16  wherein wrapping material where additive material is applied thereto exhibits an inherent porosity from about 3 CORESTA units to about 6 CORESTA units.  
     
     
         25 . The smoking article of  claim 16  having a longitudinal axis, wherein the additive material is applied to the wrapping material as a series of spaced bands that extend across the wrapping material generally perpendicular to the longitudinal axis of the smoking article.  
     
     
         26 . The smoking article of  claim 16  having a longitudinal axis, wherein the additive material is applied to the wrapping material as a series of spaced bands that extend across the wrapping material generally perpendicular to the longitudinal axis of the wrapping smoking article, and wherein each band has a width of about 4 mm to about 7 mm, and wherein the bands are spaced about 15 mm to about 25 mm from one another.  
     
     
         27 . The smoking article of  claim 16 , wherein the sugar includes a refined or unrefined sugar selected from the group consisting of sucrose, dextrose, rhamnose, glucose, fructose, maltose, melezitose, lactose, galactose, mannose, cane sugar, corn syrup, honey, and any combination thereof.  
     
     
         28 . A wrapping material for a smokable rod of a cigarette, the wrapping material comprising a base sheet and a film-forming material applied on at least one major surface thereof, the film-forming material consisting essentially of alginate and sugar.  
     
     
         29 . The wrapping material of  claim 28 , wherein the sugar includes a refined or unrefined sugar selected from the group consisting of sucrose, dextrose, rhamnose, glucose, fructose, maltose, melezitose, lactose, galactose, mannose, cane sugar, corn syrup, honey, and any combination thereof.  
     
     
         30 . A method of making a coated wrapping material, the method comprising the steps of 
 providing a wrapping paper;    providing a coating formulation that comprises an alginate, sugar, and a liquid carrier;    applying the coating formulation to at least a portion of the wrapping material.    
     
     
         31 . The method of  claim 30 , wherein the portion of the wrapping material with the coating formulation applied comprises at least one band.  
     
     
         32 . The method of  claim 30 , wherein the coating formulation is maintained at a temperature between about 25° C. and 60° C. during application.  
     
     
         33 . The method of  claim 30 , wherein the coating formulation provided comprises about 10 to about 35 percent by combined weight of alginate and sugar in a liquid carrier.  
     
     
         34 . The method of  claim 30 , further comprising a step of heating the wrapping material substantially above ambient temperature.  
     
     
         35 . The method of  claim 33 , wherein the step of heating the wrapping material substantially above ambient temperature comprises heating the wrapping material at about 230° C. for about 15 minutes.  
     
     
         36 . The method of  claim 30 , wherein the sugar includes a refined or unrefined sugar selected from the group consisting of sucrose, dextrose, rhamnose, glucose, fructose, maltose, melezitose, lactose, galactose, mannose, cane sugar, corn syrup, honey, and any combination thereof.