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 (i) inulin and guar gum, (ii) inulin and a polymeric material such as hydroxypropylcellulose or an alginate, or (ii) guar gum and a polymeric material such as hydroxypropylcellulose.

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) an inulin-type material, and (ii) at least one polymeric film-forming agent.  
   
   
       2 . The wrapping material of  claim 1 , wherein the additive material further comprises a non-polymeric filler.  
   
   
       3 . A smoking article incorporating the wrapping material of  claim 1 .  
   
   
       4 . The wrapping material of  claim 1 , wherein the additive material is applied to the wrapping material such that its dry weight application is at least 1 g/m 2 .  
   
   
       5 . The wrapping material of  claim 1 , wherein the additive material is applied to the wrapping material such that its dry weight application is about 3 g/m 2  to about 4 g/m 2 .  
   
   
       6 . The wrapping material of  claim 1 , wherein the additive material comprises guar gum.  
   
   
       7 . The wrapping material of  claim 6 , wherein the additive material comprises a liquid carrier and the guar gum comprises about 1 percent to about 30 percent by combined weight of the additive material and the liquid carrier.  
   
   
       8 . The wrapping material of  claim 6 , wherein the additive material comprises a liquid carrier and the guar gum comprises about 10 percent to about 20 percent by combined weight of the additive material and the liquid carrier.  
   
   
       9 . The wrapping material of  claim 1 , wherein the additive material comprises an alginate.  
   
   
       10 . The wrapping material of  claim 9 , wherein the additive material comprises a liquid carrier and the alginate comprises about 1 percent to about 30 percent by combined weight of the additive material and the liquid carrier.  
   
   
       11 . The wrapping material of  claim 9 , wherein the additive material comprises a liquid carrier and the alginate comprises about 10 percent to about 20 percent by combined weight of the additive material and the liquid carrier.  
   
   
       12 . The wrapping material of  claim 1 , wherein the additive material comprises hydroxypropylcellulose.  
   
   
       13 . The wrapping material of  claim 12 , wherein the additive material comprises a liquid carrier and the hydroxypropylcellulose comprises about 1 percent to about 30 percent by combined weight of the additive material and the liquid carrier.  
   
   
       14 . The wrapping material of  claim 12 , wherein the additive material comprises a liquid carrier and the hydroxypropylcellulose comprises about 10 percent to about 20 percent by combined weight of the additive material and the liquid carrier.  
   
   
       15 . The wrapping material of  claim 1 , wherein the additive material comprises pullulan.  
   
   
       16 . The wrapping material of  claim 15 , wherein the additive material comprises a liquid carrier and the pullulan comprises about 1 percent to about 30 percent by combined weight of the additive material and the liquid carrier.  
   
   
       17 . The wrapping material of  claim 15 , wherein the additive material comprises a liquid carrier and the pullulan comprises about 10 percent to about 20 percent by combined weight of the additive material and the liquid carrier.  
   
   
       18 . The wrapping material of  claim 1 , wherein the at least one polymeric film-forming agent is selected from the group consisting of hydroxypropylcellulose, alginates, guar gum, pullulan, starches, carrageenans, methylcellulose, xanthan gum, polyvinylalcohol, polyvinylacetate, polyvinylacetate copolymers, chitosan, pectins, hydroxypropylmethylcellulose, gum arabic, and any combination thereof.  
   
   
       19 . The wrapping material of  claim 1 , wherein the additive material further comprises at least one thickening agent.  
   
   
       20 . The wrapping material of  claim 19 , wherein the at least one thickening agent is selected from the group consisting of inulin, hydroxypropylcellulose, alginates, guar gum, pullulan, starches, carrageenans, methylcellulose, xanthan gum, polyvinylalcohol, polyvinylacetate, polyvinylacetate copolymers, chitosan, pectins, hydroxypropylmethylcellulose, gum arabic, and any combination thereof.  
   
   
       21 . 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) guar gum, and (ii) at least one polymeric material.  
   
   
       22 . The wrapping material of  claim 21 , wherein the additive material further comprises a non-polymeric filler.  
   
   
       23 . The wrapping material of  claim 21 , wherein the additive material further comprises at least one thickening agent.  
   
   
       24 . The wrapping material of  claim 23 , wherein the at least one thickening agent is selected from the group consisting of inulin hydroxypropylcellulose, alginates, guar gum, pullulan, starches, carrageenans, methylcellulose, xanthan gum, polyvinylalcohol, polyvinylacetate, polyvinylacetate copolymers, chitosan, pectins, hydroxypropylmethylcellulose, gum arabic, and any combination thereof.  
   
   
       25 . The wrapping material of  claim 21 , wherein the additive material is applied to the wrapping material such that its dry weight application is at least 1 g/m 2 .  
   
   
       26 . The wrapping material of  claim 21 , wherein the at least one polymeric material is selected from the group consisting of inulin, hydroxypropylcellulose, alginates, pullulan, starches, carrageenans, methylcellulose, xanthan gum, polyvinylalcohol, polyvinylacetate, polyvinylacetate copolymers, chitosan, pectins, hydroxypropylmethylcellulose, gum arabic, and any combination thereof.  
   
   
       27 . A smoking article incorporating the wrapping material of  claim 21 .  
   
   
       28 . 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) inulin, (ii) guar gum, and (iii) at least one polymeric material.  
   
   
       29 . The wrapping material of  claim 28 , wherein the additive material further comprises a non-polymeric filler.  
   
   
       30 . The wrapping material of  claim 28 , wherein the additive material further comprises at least one thickening agent.  
   
   
       31 . The wrapping material of  claim 28 , wherein the at least one thickening agent is selected from the group consisting of inulin, hydroxypropylcellulose, alginates, guar gum, pullulan, starches, carrageenans, methylcellulose, xanthan gum, polyvinylalcohol, polyvinylacetate, polyvinylacetate copolymers, chitosan, pectins, hydroxypropylmethylcellulose, gum arabic, and any combination thereof.  
   
   
       32 . The wrapping material of  claim 28 , wherein the additive material is applied to the wrapping material such that its dry weight application is least 1 g/m 2 .  
   
   
       33 . The wrapping material of  claim 28 , wherein the at least one polymeric material is selected from the group consisting of hydroxypropylcellulose, alginates, pullulan, starches, carrageenans, polyvinylacetate, methylcellulose, xanthan gum, polyvinylalcohol, polyvinylacetate, polyvinylacetate copolymers, chitosan, pectins, hydroxypropylmethylcellulose, gum arabic, and any combination thereof.  
   
   
       34 . A smoking article incorporating the wrapping material of  claim 28 .  
   
   
       35 . A method of treating a wrapping material for a smoking article, said method comprising the steps of: 
 providing a base sheet;    applying a polymeric coating to substantially all of at least one major surface of the base sheet; and    applying an additive material in a pattern on a major surface of the base sheet, wherein the additive material comprises a polymeric material that is selected from the group consisting of inulin, guar gum, gum arabic, and any combination thereof.    
   
   
       36 . The method of  claim 35 , wherein the additive material further comprises a polymeric material is selected from the group consisting of hydroxypropylcellulose, alginates, pullulan, starches, carrageenans, methylcellulose, xanthan gum, polyvinylalcohol, polyvinylacetate, polyvinylacetate copolymers, chitosan, pectins, hydroxypropylmethylcellulose, and any combination thereof.  
   
   
       37 . The method of  claim 35 , wherein the step of applying additive material in a pattern comprises printing the additive material onto the base sheet from a grooved surface.  
   
   
       38 . The method of  claim 35 , wherein the step of applying a polymeric coating comprises providing between about 1 g/m 2  and about 2.5 g/m 2  on a dry weight basis.  
   
   
       39 . The method of  claim 35 , wherein the step of applying a polymeric coating provides the wrapping material with a diffusion capacity less than 2.5 cm/sec, when measured at 25° C.  
   
   
       40 . The method of  claim 35 , wherein after the steps of applying the polymeric coating and applying the pattern of additive material, the diffusion capacity in a region with polymeric coating only is at least three times the diffusion capacity in a region with polymeric coating and additive material.  
   
   
       41 . The method of  claim 35 , further comprising the step of heating the wrapping material at about 230° C. for about 15 minutes and then cooling it to ambient temperature.  
   
   
       42 . The method of  claim 32 , wherein after the step of heating and cooling, a portion of the wrapping material comprising the additive material pattern exhibits a diffusion capacity of at least about 0.5 cm/sec, when measured at 25° C.  
   
   
       43 . The method of  claim 35 , wherein the additive material further comprises at least one thickening agent.  
   
   
       44 . The method of  claim 43 , wherein the at least one thickening agent is selected from the group consisting of inulin, hydroxypropylcellulose, alginates, guar gum, pullulan, starches, carrageenans, methylcellulose, xanthan gum, polyvinylalcohol, polyvinylacetate, polyvinylacetate copolymers, chitosan, pectins, hydroxypropylmethylcellulose, gum arabic, and any combination thereof.  
   
   
       45 . The method of  claim 35 , wherein the additive material comprises a liquid carrier.  
   
   
       46 . A coating formulation for coating a wrapping material for a smoking article, the coating formulation comprising a liquid carrier and an additive material, wherein the additive material comprises (i) an inulin-type material, and (ii) at least one polymeric film-forming agent.  
   
   
       47 . The coating formulation of  claim 46 , wherein the at least one polymeric film-forming agent is selected from the group consisting of hydroxypropylcellulose, alginates, guar gum, pullulan, starches, carrageenans, methylcellulose, xanthan gum, polyvinylalcohol, polyvinylacetate, polyvinylacetate copolymers, chitosan, pectins, hydroxypropylmethylcellulose, gum arabic, and any combination thereof.  
   
   
       48 . The coating formulation of  claim 46 , comprising by weight about 50 percent to about 90 percent of the liquid carrier, about 10 percent to about 50 percent, combined, of the inulin-type material and the at least one polymeric film-forming agent.  
   
   
       49 . The coating formulation of  claim 46 , comprising by weight about 65 percent to about 80 percent of the liquid carrier, about 15 percent to about 30 percent, combined, of the inulin-type material and the at least one polymeric film-forming agent.  
   
   
       50 . A coating formulation for coating a wrapping material for a smoking article, the coating formulation comprising a liquid carrier and an additive material, wherein the additive material comprises (i) at least one thickening agent selected from the group consisting of hydroxypropylcellulose, alginates, guar gum, pullulan, starches, carrageenans, methylcellulose, xanthan gum, polyvinylalcohol, polyvinylacetate, polyvinylacetate copolymers, inulin-type material, chitosan, pectins, hydroxypropylmethylcellulose, gum arabic, and any combination thereof, and (ii) at least one polymeric film-forming agent selected from the group consisting of hydroxypropylcellulose, alginates, guar gum, pullulan, starches, carrageenans, methylcellulose, xanthan gum, polyvinylalcohol, polyvinylacetate, polyvinylacetate copolymers, inulin-type material, chitosan, pectins, hydroxypropylmethylcellulose, gum arabic, and any combination thereof.  
   
   
       51 . A smoking article comprising a wrapping material, wherein the wrapping material comprises the coating formulation of  claim 51.