HEATED AEROSOL GENERATING ARTICLE WITH THERMAL SPREADING WRAP
A heated aerosol-generating article is provided, including an aerosol-forming substrate radially encircled by a sheet of thermally-conductive material. The heated aerosol-generating article is for use with an electrically-operated aerosol-generating device comprising a heating element, for example an insertable heating element. The aerosol-forming substrate may be a rod comprising a gathered sheet of aerosol-forming material circumscribed by a wrapper, in which the wrapper is a sheet of thermally-conductive material. The thermally-conductive material acts as a thermally-conducting flame barrier for spreading heat and mitigating against the risk of a user igniting the aerosol-forming substrate by applying a flame, or other ignition source, to the heated aerosol-generating article.
1 . A heated aerosol-generating article for use with an electrically-operated aerosol-generating device comprising a heating element, the aerosol-generating article comprising an aerosol-forming substrate radially encircled by a sheet of thermally-conductive material.
2 . A heated aerosol-generating article according to claim 1 comprising a plurality of elements, including the aerosol-forming substrate, assembled within a cigarette paper to form a rod, the sheet of thermally-conductive material being located within the cigarette paper.
3 . A heated aerosol-generating article according to claim 1 comprising a plurality of elements, including the aerosol-forming substrate, assembled within a cigarette paper to form a rod, the sheet of thermally-conductive material being located radially external to the cigarette paper.
4 . A heated aerosol-generating article according to any preceding claim in the form of a rod having a mouth end and a distal end upstream from the mouth end, in which a portion of the thermally-conductive material covers the distal end of the rod.
5 . A heated aerosol-generating article according to any preceding claim in the form of a rod having a mouth end and a distal end upstream from the mouth end, in which a spacer element is located within the rod upstream of the aerosol-forming substrate.
6 . A heated aerosol-generating article according to any of claims 1 to 3 in the form of a rod having a mouth end and a distal end upstream from the mouth end, in which the aerosol-forming substrate is located at the distal end of the rod.
7 . A heated aerosol-forming article according any of claim 1 , 2 , 4 , 5 , or 6 , in which the aerosol-forming substrate comprises a gathered sheet of aerosol-forming material circumscribed by a wrapper, the wrapper being the sheet of thermally-conductive material.
8 . A heated aerosol-generating article according to any preceding claim in which the sheet of thermally-conductive material is or comprises metal foil.
9 . A heated aerosol-generating article according to claim 8 in which the sheet of thermally-conductive material is a sheet of material formed by co-lamination of metal foil with paper, or a sheet material formed by co-lamination of metal foil with reconstituted tobacco.
10 . A heated aerosol-generating article according to claim 8 or 9 in which the metal foil is aluminium foil.
11 . A heated aerosol-generating article according to any preceding claim for use with an aerosol-generating device comprising an insertable heating element for insertion into a distal end of the heated aerosol-generating article.
12 . A heated aerosol-generating article according to any preceding claim in which the thermally-conductive material acts as a thermally-conducting flame barrier for spreading heat and mitigating against the risk of a user igniting the aerosol-forming substrate by applying a flame to the aerosol-generating article.
13 . A rod comprising a gathered sheet of aerosol-forming material circumscribed by a wrapper, in which the wrapper is a sheet of thermally-conductive material.
14 . A rod according to claim 13 in which the sheet of thermally-conductive material is or comprises metal foil.
15 . A rod according to claim 13 or 14 in which the sheet of thermally-conductive material is a sheet of material formed by co-lamination of metal foil with paper, or a sheet material formed by co-lamination of metal foil with reconstituted tobacco.
16 . A rod according to any of claims 13 to 15 in which the sheet of aerosol-forming material comprises tobacco.
17 . A rod according to any of claims 13 to 16 in which the sheet of aerosol-forming material is or comprises homogenised tobacco material.
18 . A rod according to any of claims 13 to 17 in which the sheet of aerosol-forming material is textured prior to being gathered.
19 . A rod according to any of claims 13 to 18 comprising a second sheet of material gathered together with the sheet of aerosol-forming material and circumscribed by the wrapper.
20 . A heated aerosol-generated article comprising a rod according to any of claims 13 to 19 .