Aerosol-generating article with thick wrapper

Abstract

An aerosol-generating article is provided, including: an aerosol-forming substrate in an aerosol-forming substrate portion; and a substrate wrapper at least partly circumscribing the aerosol-forming substrate portion, the wrapper having a thickness of 50 micrometers or more, the wrapper not extending beyond ends of the substrate portion in a longitudinal direction of the article, and the substrate includes an aerosol former content of at least 35 percent by weight, and the substrate further includes one or more cellulose based film-forming agents selected from carboxymethyl cellulose (CMC), ethylcellulose (EC), hydroxyethyl cellulose (HEC), hydroxyethyl methylcellulose (HEMC), hydroxypropyl cellulose (HPC), hydroxypropyl methylcellulose (HPMC), and methylcellulose (MC) with a total cellulose based film-forming agent content of greater than or equal to 15 percent by weight. An aerosol-generating system including the aerosol-generating article and an aerosol-generating device is also provided.

1 .- 15 . (canceled) 
     
     
         16 . An aerosol-generating article, comprising:
 an aerosol-forming substrate in an aerosol-forming substrate portion; and   a substrate wrapper at least partly circumscribing the aerosol-forming substrate portion,   wherein the substrate wrapper has a thickness of 50 micrometers or more,   wherein the substrate wrapper does not extend beyond ends of the aerosol-forming substrate portion in a longitudinal direction of the aerosol-generating article,   wherein the aerosol-forming substrate comprises an aerosol former content of at least 35 percent by weight, and   wherein the aerosol-forming substrate further comprises one or more cellulose based film-forming agents selected from carboxymethyl cellulose (CMC), ethylcellulose (EC), hydroxyethyl cellulose (HEC), hydroxyethyl methylcellulose (HEMC), hydroxypropyl cellulose (HPC), hydroxypropyl methylcellulose (HPMC), and methylcellulose (MC) with a total cellulose based film-forming agent content of greater than or equal to 15 percent by weight.   
     
     
         17 . The aerosol-generating article according to  claim 16 , wherein the substrate wrapper has a thickness of 60 micrometers or more. 
     
     
         18 . The aerosol-generating article according to  claim 16 , wherein the substrate wrapper has a thickness of 140 micrometers or more. 
     
     
         19 . The aerosol-generating article according to  claim 16 , wherein the substrate wrapper has a thickness of between 140 micrometers and 155 micrometers. 
     
     
         20 . The aerosol-generating article according to  claim 16 , wherein a ratio of substrate wrapper thickness to aerosol-forming substrate portion diameter is in a range from about 1:120 to about 1:20, or about 1:100 to about 1:30, or about 1:80 to about 1:35, or about 1:60 to about 1:40. 
     
     
         21 . The aerosol-generating article according to  claim 16 , wherein the total aerosol former content of the aerosol-forming substrate is at least 40 percent by weight. 
     
     
         22 . The aerosol-generating article according to  claim 16 , wherein the total aerosol former content of the aerosol-forming substrate is at least 55 percent by weight. 
     
     
         23 . The aerosol-generating article according to  claim 16 , wherein the aerosol-forming substrate further comprises nicotine, one or more cellulose based agents, one or more aerosol formers, and one or more carboxylic acids. 
     
     
         24 . The aerosol-generating article according to  claim 23 , wherein the one or more carboxylic acids is selected from fumaric acid, maleic acid, and malic acid. 
     
     
         25 . The aerosol-generating article according to  claim 23 , wherein the one or more carboxylic acids is fumaric acid. 
     
     
         26 . The aerosol-generating article according to  claim 16 , wherein the aerosol-forming substrate further comprises one or more carboxylic acids selected from acetic acid, benzoic acid, lactic acid, and levulinic acid. 
     
     
         27 . The aerosol-generating article according to  claim 16 , wherein the aerosol-forming substrate has a total cellulose based agent content of between 35 percent by weight and 50 percent by weight. 
     
     
         28 . The aerosol-generating article according to  claim 16 , wherein the one or more cellulose based film-forming agents are selected from carboxymethyl cellulose and hydroxypropyl methylcellulose. 
     
     
         29 . The aerosol-generating article according to  claim 16 , wherein the aerosol-forming substrate further comprises one or more cellulose based strengthening agents selected from cellulose fibres, microcrystalline cellulose, and cellulose powder. 
     
     
         30 . The aerosol-generating article according to  claim 29 , wherein the aerosol-forming substrate has a cellulose based strengthening agent content of between 5 percent and 30 percent by weight on a dry weight basis. 
     
     
         31 . The aerosol-generating article according to  claim 16 , wherein the aerosol-forming substrate is a solid aerosol-forming film. 
     
     
         32 . The aerosol-generating article according to  claim 31 , wherein the solid aerosol-forming film remains solid when heated to a temperature of between 180 degrees Celsius and 350 degrees Celsius. 
     
     
         33 . The aerosol-generating article according to  claim 16 , wherein the aerosol-forming substrate is provided in form of a gel. 
     
     
         34 . The aerosol-generating article according to  claim 16 , wherein the aerosol-forming substrate is tobacco-free. 
     
     
         35 . An aerosol-generating system comprising the aerosol-generating article according to  claim 16  and an aerosol-generating device comprising a heating chamber configured for at least partly inserting the aerosol-generating article into the heating chamber.