Smoking articles and wrapping materials therefor

Abstract

A smoking article includes a smokable rod manufactured using a paper wrapping material having an additive material applied thereto as a pattern. The additive material is applied as coating formulation (e.g., an aqueous coating formulation) incorporating a film-forming agent such as alginate or hydroxypropylmethylcellulose, and a polyol, corn oil, or corn syrup.

1 . A wrapping material for a smoking article, the wrapping material comprising a base sheet and an additive material disposed on at least one major surface thereof, the additive material comprising (i) a first material selected from the group consisting of a polyol, corn oil, and corn syrup, and (ii) at least one polymeric film-forming agent. 
   
   
       2 . The wrapping material of  claim 1  wherein the first material is a polyol selected from a group consisting of mannitol, erythritol, sorbitol, maltitol, xylitol, lactitol, polyglycitol, isomaltitol, and any combination thereof. 
   
   
       3 . The wrapping material of  claim 1  wherein the at least one polymeric film-forming agent is selected from a group consisting of hydroxypropylcellulose, hydroxypropylmethylcellulose, an alginate, and any combination thereof. 
   
   
       4 . The wrapping material of  claim 3  wherein the alginate is selected from a group consisting of ammonium alginate, potassium alginate, sodium alginate, and any combination thereof. 
   
   
       5 . A smoking article comprising a tobacco rod, the tobacco rod comprising tobacco wrapped in a paper wrapping material, the wrapping material comprising a base sheet and an additive material disposed on at least one major surface thereof, the additive material comprising (i) a polyol, and (ii) at least one polymeric film-forming agent. 
   
   
       6 . The smoking article of  claim 5  wherein the first material is a polyol selected from a group consisting of mannitol, erythritol, sorbitol, maltitol, xylitol, lactitol, polyglycitol, isomaltitol, and any combination thereof. 
   
   
       7 . The smoking article of  claim 5  wherein the at least one polymeric film-forming agent is selected from a group consisting of hydroxypropylcellulose, hydroxypropylmethylcellulose, an alginate, and any combination thereof. 
   
   
       8 . The smoking article of  claim 7  wherein the alginate is selected from a group consisting of ammonium alginate, potassium alginate, sodium alginate, and any combination thereof. 
   
   
       9 . A method of providing a wrapping material for a smoking article, said method comprising the steps of:
 providing a wrapping material comprising a base sheet;   providing an additive material comprising (i) a first material selected from the group consisting of a polyol, corn oil, and corn syrup, and (ii) at least one polymeric film-forming agent; and   applying the additive material in a banded pattern to a major surface of the base sheet.   
   
   
       10 . The method of  claim 9  wherein the first material is a polyol selected from a group consisting of mannitol, erythritol, sorbitol, maltitol, xylitol, lactitol, polyglycitol, isomaltitol, and any combination thereof. 
   
   
       11 . The method of  claim 9  wherein the at least one polymeric film-forming agent is selected from a group consisting of hydroxypropylcellulose, hydroxypropylmethylcellulose, an alginate, and any combination thereof. 
   
   
       12 . The method of  claim 11  wherein the alginate is selected from a group consisting of ammonium alginate, potassium alginate, sodium alginate, and any combination thereof. 
   
   
       13 . The method of  claim 9 , wherein the additive material is provided as an aqueous mixture, and the method further comprises the steps of:
 combining the first material and the at least one polymeric film-forming agent in a stirred manner to form an aqueous solution at about 60° C.; and   cooling the aqueous mixture to room temperature.   
   
   
       14 . The method of  claim 13 , wherein the additive material comprises an alginate selected such that a water-alginate mixture exhibits a viscosity of greater than about 500 cP when the alginate is present at 3 percent by weight in the water-alginate mixture at 25° C. 
   
   
       15 . The method of  claim 13 , wherein the additive material comprises an alginate selected such that a water-alginate mixture exhibits a viscosity of greater than about 1000 cP when the alginate is present at 3 percent by weight in the water-alginate mixture at 25° C. 
   
   
       16 . The method of  claim 13 , wherein the first material and the at least one polymeric film-forming agent combined comprise about 10 to about 50 weight percent in the aqueous mixture. 
   
   
       17 . The method of  claim 13 , wherein the first material and the at least one polymeric film-forming agent combined comprise about 15 to about 30 weight percent in the aqueous mixture. 
   
   
       18 . The method of  claim 9 , wherein the additive material comprises water, potassium sorbate, calcium chloride, hydroxypropylcellulose, and the first material is a polyol selected from the group consisting of erythritol and mannitol. 
   
   
       19 . The method of  claim 18 , wherein the polyol selected is erythritol, and the additive material further comprises corn oil. 
   
   
       20 . The method of  claim 9 , wherein the additive material comprises water, potassium sorbate, calcium chloride, hydroxypropylmethylcellulose, corn oil, and high fructose corn syrup, 
   
   
       21 . The method of  claim 9 , wherein the additive material comprises water, potassium sorbate, calcium chloride, hydroxypropylmethylcellulose, corn oil, and an alginate selected from the group consisting of sodium alginate and ammonium alginate. 
   
   
       22 . The method of  claim 9 , further comprising the step of heating the wrapping material at about 230° C. for about 15 minutes. 
   
   
       23 . The method of  claim 22 , wherein a diffusion capacity of the wrapping material in a banded pattern region is greater after the step of heating than before the step of heating. 
   
   
       24 . The method of  claim 9 , wherein the additive material comprises additional components selected from the group consisting of potassium sorbate, calcium chloride, sodium chloride, potassium citrate, calcium carbonate, magnesium oxide, and colorant. 
   
   
       25 . A wrapping material for a smoking article, the wrapping material comprising a base sheet and an additive material disposed on at least one major surface thereof, the additive material comprising (i) hydroxypropyl-methylcellulose and (ii) at least one other polymeric material. 
   
   
       26 . A wrapping material for a smoking article, the wrapping material comprising a base sheet and an additive material disposed on at least one major surface thereof, the additive material comprising at least two layers of an intermediate to high molecular weight alginate selected from the group consisting of sodium alginate and ammonium alginate.