Low ignition propensity cigarette paper

Abstract

A low ignition propensity cigarette paper includes base cigarette paper having a basis weight exceeding 22 g/m 2 , and a plurality of burn limiting areas arranged apart from one another on one surface of the base cigarette paper. The burn limiting areas are formed by applying sodium alginate having a degree of polymerization of about 500 to about 900 or sodium alginate whose 3% by weight aqueous solution exhibits a viscosity of 19000 cP or more as measured at 25° C.

1 . A low ignition propensity cigarette paper comprising base cigarette paper having a basis weight exceeding 22 g/m 2 , and a plurality of burn limiting areas arranged apart from one another on one surface of the base cigarette paper, wherein the burn limiting areas are formed by applying sodium alginate having a degree of polymerization of about 500 to about 900. 
   
   
       2 . The cigarette paper according to  claim 1 , wherein a basis weight of the base cigarette paper is 80 g/m 2  or less. 
   
   
       3 . A low ignition propensity cigarette paper comprising base cigarette paper having a basis weight exceeding 22 g/m 2 , and a plurality of burn limiting areas arranged apart from one another on one surface of the base cigarette paper, wherein the burn limiting areas are each formed by applying sodium alginate whose 3% by weight aqueous solution exhibits a viscosity of 19000 cP or more as measured at 25° C. 
   
   
       4 . The cigarette paper according to  claim 3 , wherein a basis weight of the base cigarette paper is 80 g/m 2  or less and the viscosity of the sodium alginate is 40000 cP or less. 
   
   
       5 . A low ignition propensity cigarette paper comprising base cigarette paper containing a filler in an amount of 2 g/m 2  or more, and having a basis weight exceeding 22 g/m 2  and an inherent air permeability of 30 to 60 CORESTA units, and a plurality of burn limiting areas arranged apart from one another on one surface of the base cigarette paper, wherein the burn limiting areas are each formed by applying sodium alginate in an amount less than 3 g/m 2 , and the cigarette paper provides a cigarette exhibiting a PFLB value of 0 to 10% when measured according to ASTM E-2187-04. 
   
   
       6 . The cigarette paper according to  claim 5 , wherein the filler is contained in an amount of 8 g/m 2  or less in the base cigarette paper and the sodium alginate is applied to the base cigarette paper in an amount of 0.2 to 2 g/m 2 . 
   
   
       7 . The cigarette paper according to  claim 1 , wherein the burn limiting areas are in a form of plurality of stripes which extend in a longitudinal direction of the tobacco rod and are apart from one another in a circumferential direction of the tobacco rod, when the cigarette paper wraps a tobacco rod. 
   
   
       8 . The cigarette paper according to  claim 3 , wherein the burn limiting areas are in a form of plurality of stripes which extend in a longitudinal direction of the tobacco rod and are apart from one another in a circumferential direction of the tobacco rod, when the cigarette paper wraps a tobacco rod. 
   
   
       9 . The cigarette paper according to  claim 5 , wherein the burn limiting areas are in a form of plurality of stripes which extend in a longitudinal direction of the tobacco rod and are apart from one another in a circumferential direction of the tobacco rod, when the cigarette paper wraps a tobacco rod. 
   
   
       10 . The cigarette paper according to  claim 1 , wherein the burn limiting areas are in a form of plurality of circular bands which extend in the circumferential direction of the tobacco rod and are apart from one another in the longitudinal direction of the tobacco rod, when the cigarette paper wraps a tobacco rod. 
   
   
       11 . The cigarette paper according to  claim 3 , wherein the burn limiting areas are in a form of plurality of circular bands which extend in the circumferential direction of the tobacco rod and are apart from one another in the longitudinal direction of the tobacco rod, when the cigarette paper wraps a tobacco rod. 
   
   
       12 . The cigarette paper according to  claim 5 , wherein the burn limiting areas are in a form of plurality of circular bands which extend in the circumferential direction of the tobacco rod and are apart from one another in the longitudinal direction of the tobacco rod, when the cigarette paper wraps a tobacco rod. 
   
   
       13 . A cigarette paper according to  claim 1 , which provides a cigarette exhibiting a PFLB value of 0 to 10% when measured according to ASTM E-2187-04. 
   
   
       14 . A cigarette paper according to  claim 3 , which provides a cigarette exhibiting a PFLB value of 0 to 10% when measured according to ASTM E-2187-04.