Smoking Article Wrapper

Abstract

A smoking article wrapper includes at least one coated surface area and at least one non-coated surface area, wherein the smoking article wrapper is combustible and provides a mean volumetric flow rate of at least 40 CU, wherein the at least one coated surface area provides a glossiness of at least 4 GU, the at least one non-coated surface area provides a glossiness of less than 4 GU and the difference of glossiness between the at least one coated surface area and the at least one non-coated surface area is more than 2 GU. A smoking article includes such a smoking article wrapper. A method for producing a smoking article includes such a smoking article wrapper by printing a polymer on parts of the smoking article wrapper by flexography.

1 . A smoking article wrapper, such as a cigarette paper, comprising at least one coated surface area and at least one non-coated surface area, wherein the smoking article wrapper is combustible and provides a mean volumetric flow rate of at least 40 cm 3 min −1  air passing through a sample of 1 cm 2  of the smoking article wrapper at an applied pressure difference of 1 kPa,
 the at least one coated surface area of the smoking article wrapper provides a glossiness of at least 4 GU according to DIN EN ISO 2813:2015, the at least one non-coated surface area provides a glossiness of less than 4 GU according to DIN EN ISO 2813:2015 and a difference of glossiness between the at least one coated surface area and the at least one non-coated surface area is more than 2 GU according to DIN EN ISO 2813:2015.   
     
     
         2 . The smoking article wrapper according to  claim 1 , wherein:
 the glossiness of the at least one coated surface area of the smoking article wrapper is between 4-10 GU, according to DIN EN ISO 2813:2015.   
     
     
         3 . The smoking article wrapper according to  claim 1 , wherein:
 the glossiness of the at least one non-coated surface area is between 1-4 GU according to DIN EN ISO 2813:2015.   
     
     
         4 . The smoking article wrapper according to  claim 1 , wherein:
 a difference of opacity between the at least one coated surface area and the at least one non-coated surface area of the smoking article wrapper is less than 2%.   
     
     
         5 . The smoking article wrapper according to  claim 1 , wherein:
 an opacity of the at least one coated surface area of the smoking article wrapper is more than 70%.   
     
     
         6 . The smoking article wrapper according to  claim 1 , wherein:
 a percentage of the at least one coated surface area is less than 80% of a total surface area of the smoking article wrapper.   
     
     
         7 . The smoking article wrapper according to  claim 1 , wherein:
 the at least one coated surface area comprises a coating of 0.5 to 20 g/m 2 .   
     
     
         8 . The smoking article wrapper according to  claim 1 , wherein:
 the at least one coated surface area comprises a polymer as a coating agent, wherein the polymer is at least one of EVA, PVA, any other copolymer of ethylene, any other copolymer of propylene, PE, or any other film forming polymer.   
     
     
         9 . The smoking article wrapper according to  claim 1 , wherein:
 the at least one non-coated surface area of the smoking article wrapper provides a volumetric flow rate in a range of 20-120 cm 3 min −1  air passing through a sample of 1 cm 2  of the smoking article wrapper at an applied pressure difference of 1 kP.   
     
     
         10 . The smoking article wrapper according to  claim 1 , wherein:
 the at least one coated surface area of the smoking article wrapper provides a volumetric flow rate in a range of 5-80 cm 3 min −1  air passing through a sample of 1 cm 2  of the smoking article wrapper at an applied pressure difference of 1 kP.   
     
     
         11 . A smoking article comprising the smoking article wrapper according to  claim 1 . 
     
     
         12 . The smoking article according to  claim 11 , further comprising:
 a mouthpiece and an aerosol generating substrate, wherein the aerosol generating substrate is wrapped in the smoking article wrapper.   
     
     
         13 . A method for producing a smoking article comprising a smoking article wrapper having a glossiness of at least 4 GU according to DIN EN ISO 2813:2015 in first parts of a surface of the smoking article wrapper and a glossiness of less than 4 GU according to DIN EN ISO 2813:2015 in other second parts of the surface, wherein a difference of glossiness between the first and second parts is more than 2 GU according to DIN EN ISO 2813:2015, the method comprising:
 printing a polymer on areas of the smoking article wrapper by flexography.   
     
     
         14 . The method according to  claim 13 , wherein:
 the polymer is at least one of EVA, PVA, any other copolymer of ethylene, any other copolymer of propylene, PE, or any other film forming polymer.   
     
     
         15 . The method according to  claim 13 ,
 wherein the step of printing includes printing the polymer as emulsion, suspension or in molten form, and the method further comprises drying the polymer after the step of printing.   
     
     
         16 . The method according to  claim 15 ,
 wherein the step of drying is performed under at least temporally increased pressure.