Smoking article tipping paper coated with functional material and method of coating the tipping paper

Abstract

According to an embodiment of the present disclosure, there is provided a smoking article including a smoking material portion which is wrapped with a smoking material wrapper, a filter portion which has an upstream end combined with the smoking material portion and is wrapped with a filter wrapper, and a tipping paper which is wrapped around at least a partial region of the smoking material portion and the filter portion so that the smoking material portion and the filter portion are combined, wherein the tipping paper is coated with an overprint (OP) coating solution in which at least one functional material and an OP auxiliary agent which enhances the solubility of the at least one functional material are added to an OP ink.

What is claimed is: 
     
         1 . A smoking article comprising:
 a smoking material portion which is wrapped with a smoking material wrapper;   a filter portion which has an upstream end combined with the smoking material portion and is wrapped with a filter wrapper; and   a tipping paper which is wrapped around the filter portion and at least part of the smoking material portion such that the smoking material portion and the filter portion are combined,   wherein the tipping paper is coated with an overprint (OP) coating solution in which at least one functional material and an OP auxiliary agent which enhances solubility of the at least one functional material are added to an OP ink.   
     
     
         2 . The smoking article of  claim 1 , wherein: 
 a weight ratio of the OP ink to the OP auxiliary agent in the tipping paper is in a range of 1:2 to 2:1; and   a weight ratio of the at least one functional material to the OP ink or the OP auxiliary agent in the tipping paper is in a range of 1:1.5 to 1:600.   
     
     
         3 . The smoking article of  claim 1 , wherein the at least one functional material includes at least one of a sweetener material and a harmful bacteria/bad breath reduction material. 
     
     
         4 . The smoking article of  claim 3 , wherein: 
 the sweetener material includes at least one of sucralose, citric acid, cinnamon, dark chocolate, and malic acid; and   the harmful bacteria/bad breath reduction material includes at least one of rosemary oil, grapefruit seed extract, the sucralose, and the malic acid.   
     
     
         5 . The smoking article of  claim 4 , wherein the at least one functional material consists of any one of the malic acid, the sucralose, the rosemary oil, the grapefruit seed extract, and a mixture of the malic acid and sucralose. 
     
     
         6 . The smoking article of  claim 5 , wherein the at least one functional material consists of the malic acid, and a weight ratio of the malic acid to the OP ink or the OP auxiliary agent in the tipping paper is in a range of 1:2 to 1:25. 
     
     
         7 . The smoking article of  claim 6 , wherein the weight ratio of the malic acid to the OP ink or the OP auxiliary agent in the tipping paper is in a range of 1:7 to 1:12. 
     
     
         8 . The smoking article of  claim 5 , wherein the at least one functional material consists of any one of the sucralose, the rosemary oil, and the grapefruit seed extract, and a weight ratio of the functional material to the OP ink or the OP auxiliary agent in the tipping paper is in a range of 1:2 to 1:25. 
     
     
         9 . The smoking article of  claim 8 , wherein the weight ratio of the functional material to the OP ink or the OP auxiliary agent in the tipping paper is in a range of 1:3 to 1:10. 
     
     
         10 . The smoking article of  claim 5 , wherein: 
 the at least one functional material consists of the mixture of the malic acid and sucralose;   a weight ratio of the mixture of the malic acid and sucralose to the OP ink or the OP auxiliary agent in the tipping paper is in a range of 1:2 to 1:12; and   a weight ratio of the malic acid to the sucralose in the tipping paper is in a range of 1:0.006 to 1:1.25.   
     
     
         11 . The smoking article of  claim 10 , wherein the weight ratio of the malic acid to the sucralose in the tipping paper is in a range of 1:0.1 to 1:0.3. 
     
     
         12 . A smoking article wrapper which is coated with an OP coating solution in which at least one functional material and an OP auxiliary agent which enhances solubility of the at least one functional material are added to an OP ink. 
     
     
         13 . The smoking article wrapper of  claim 12 , wherein the smoking article wrapper is a smoking article tipping paper which is configured to be wrapped around a smoking article filter portion and at least part of a smoking material portion of a smoking article such that the smoking material portion and the smoking article filter portion are combined. 
     
     
         14 . A method of coating a tipping paper, the method comprising: 
 preparing an OP coating solution in which at least one functional material and an OP auxiliary agent which enhances solubility of the at least one functional material are added to an OP ink; and   coating a surface of the tipping paper with the OP coating solution.   
     
     
         15 . The method of  claim 14 , wherein: 
 the at least one functional material includes a first functional material in the form of powder and a second functional material in the form of oil; and   in the preparing of the OP coating solution, the first functional material in the form of powder and the second functional material in the form of oil are sequentially dissolved in the OP coating solution.