Cigarette packaging material and cigarette product

Abstract

A cigarette packaging material includes: a packaging material having an inner bottom surface and defining a housing space above the inner bottom surface, the housing space housing a cigarette such that a longitudinal direction of the cigarette is substantially parallel with a depth direction of the housing space; and a humidity control layer housed in the housing space, disposed along the inner bottom surface, brought into direct contact with the cigarette, and dehumidifying and humidifying the cigarette to control humidity of the cigarette to reach a target humidity.

1 . A cigarette packaging material, comprising:
 a packaging material having an inner bottom surface and defining a housing space above the inner bottom surface, the housing space housing a cigarette such that a longitudinal direction of the cigarette is substantially parallel with a depth direction of the housing space; and   a humidity control layer housed in the housing space, disposed along the inner bottom surface, and dehumidifying and humidifying the cigarette to control humidity of the cigarette to reach a target humidity.   
     
     
         2 . The cigarette packaging material according to  claim 1 ,
 wherein the cigarette is in contact with the humidity control layer.   
     
     
         3 . The cigarette packaging material according to  claim 1 ,
 wherein the packaging material has an inner top surface,   each of a plurality of the cigarettes includes: a sucked portion located at an end of each cigarette; and a burning portion located at another end of each cigarette,   the sucked portion is disposed toward the inner top surface,   the burning portion is disposed toward the inner bottom surface, and   the humidity control layer is in direct contact with the burning portion.   
     
     
         4 . The cigarette packaging material according to  claim 1 ,
 wherein the humidity control layer is shaped into either a block or a sheet.   
     
     
         5 . The cigarette packaging material according to  claim 1 ,
 wherein the target humidity is within a range of a relative humidity of 60% RH or more and 80% RH or less.   
     
     
         6 . The cigarette packaging material according to  claim 1 ,
 wherein the humidity control layer includes:   a resin material containing a resin; and   a humidity control liquid impregnating the resin, and absorbing or releasing moisture.   
     
     
         7 . The cigarette packaging material according to  claim 6 ,
 wherein the humidity control liquid contains at least one selected from the group consisting of polyhydric alcohol and metal salt.   
     
     
         8 . The cigarette packaging material according to  claim 7 ,
 wherein the polyhydric alcohol contains glycerin.   
     
     
         9 . The cigarette packaging material according to  claim 7 ,
 wherein the metal salt contains at least one selected from the group consisting of lithium chloride, sodium formate, potassium formate, sodium acetate, potassium acetate, sodium lactate, potassium lactate, sodium benzoate, potassium benzoate, sodium propionate, and potassium propionate.   
     
     
         10 . The cigarette packaging material according to  claim 7 , wherein the metal salt contains at least one selected from the group consisting of sodium formate, potassium formate, sodium acetate, potassium acetate, sodium lactate, potassium lactate, sodium benzoate, potassium benzoate, sodium propionate, and potassium propionate. 
     
     
         11 . The cigarette packaging material according to  claim 6 ,
 wherein the resin is powdery or particulate.   
     
     
         12 . The cigarette packaging material according to  claim 6 ,
 wherein the resin material includes a carrier to carry the resin.   
     
     
         13 . The cigarette packaging material according to  claim 12 ,
 wherein the carrier includes either a nonwoven fabric or a woven fabric.   
     
     
         14 . A cigarette product, comprising:
 the cigarette packaging material according to  claim 1 ; and   the cigarette.