Low flame-spreading cigarette

Abstract

A cigarette includes a tobacco filler material rod and a cigarette paper wrapping the rod. The cigarette paper has an inherent air permeability of more than 20 CORESTA units but 80 CORESTA units or less and contains a loading material in an amount of 1.0 to 5.0 g/m 2 .

1 . A cigarette comprising a tobacco filler material rod and a cigarette paper wrapping the rod, wherein the cigarette paper has an inherent air permeability of more than 20 CORESTA units but 80 CORESTA units or less and contains a loading material in an amount of 1.0 to 5.0 g/m 2 .  
   
   
       2 . The cigarette according to  claim 1 , wherein the cigarette paper has an inherent air permeability of more than 20 CORESTA units but 60 CORESTA units or less.  
   
   
       3 . The cigarette according to  claim 1 , wherein the cigarette paper has an inherent air permeability of 25 to 55 CORESTA units.  
   
   
       4 . The cigarette according to  claim 1 , wherein the cigarette paper contains the loading material in an amount of 1.4 to 3.7 g/m 2 .  
   
   
       5 . The cigarette according to  claim 1 , wherein the cigarette paper contains the loading material in an amount of 1.6 to 3.3 g/m 2 .  
   
   
       6 . The cigarette according to  claim 1 , wherein the cigarette paper contains the loading material in an amount of 6 to 25% by weight.  
   
   
       7 . The cigarette according to  claim 1 , wherein the cigarette paper contains the loading material in an amount of 7 to 21% by weight.  
   
   
       8 . The cigarette according to  claim 1 , wherein the cigarette paper contains the loading material in an amount of 8 to 17% by weight.  
   
   
       9 . The cigarette according to  claim 1 , wherein the cigarette paper has a basis weight of 17 to 28 g/m 2 .  
   
   
       10 . The cigarette according to  claim 1 , wherein the cigarette paper has a basis weight of 18 to 25 g/m 2 .  
   
   
       11 . The cigarette according to  claim 1 , wherein the cigarette paper has a basis weight of 18 to 22 g/m 2 .  
   
   
       12 . The cigarette according to  claim 1 , wherein the cigarette paper contains a burn adjusting agent in an amount of 0.1 to 1.0% by weight.  
   
   
       13 . The cigarette according to  claim 1 , wherein the cigarette paper contains a burn adjusting agent in an amount of 0 to 0.6% by weight.  
   
   
       14 . The cigarette according to  claim 1 , wherein the cigarette paper contains a burn adjusting agent in an amount of 0.1 to 0.6% by weight.  
   
   
       15 . The cigarette according to  claim 1 , wherein the tobacco filler material is loaded at a loading density of 130 to 260 mg/cm 3 .  
   
   
       16 . The cigarette according to  claim 1 , wherein the tobacco filler material is loaded at a loading density of 140 to 230 mg/cm 3 .  
   
   
       17 . The cigarette according to  claim 1 , wherein the tobacco filler material comprises shredded tobacco.  
   
   
       18 . The cigarette according to  claim 17 , wherein the shredded tobacco has a width of 0.5 to 1.5 mm.  
   
   
       19 . The cigarette according to  claim 1 , wherein the loading material is selected from the group consisting of calcium carbonate, potassium carbonate, calcium hydroxide and magnesium hydroxide.  
   
   
       20 . A cigarette comprising a tobacco filler material rod, and a cigarette paper wrapping the rod, wherein the cigarette paper has an inherent air permeability of more than 20 CORESTA units but 80 CORESTA units or less, contains a loading material in an amount of 1.4 to 3.7 g/m 2  and also contains a burn adjusting agent in an amount of 0 to 0.6% by weight, and the tobacco filler material is loaded at a loading density of 130 to 230 g/cm 3 .  
   
   
       21 . The cigarette according to  claim 20 , wherein the cigarette paper has an inherent air permeability of 25 to 55 CORESTA units, contains the loading material in an amount of 1.6 to 3.3 g/m 2  and also contains the burn adjusting agent in an amount of 0.1 to 0.6% by weight, and the tobacco filler material is loaded at a loading density of 140 to 230 g/cm 3 .  
   
   
       22 . The cigarette according to  claim 1 , which exhibits a low flame spread property such that, when left to stand on a substrate after static burn over a prescribed distance, a median value of a moving distance of a char line of the cigarette paper in an axial direction of the cigarette until the burn of the cigarette is stopped is not larger than 8 mm.  
   
   
       23 . The cigarette according to  claim 20 , which exhibits a low flame spread property such that, when left to stand on a substrate after static burn over a prescribed distance, a median value of a moving distance of a char line of the cigarette paper in an axial direction of the cigarette until the burn of the cigarette is stopped is not larger than 8 mm.