Aerosol-generating article with improved outermost wrapper
An aerosol-generating article is provided, including: an aerosol-forming substrate configured to be heated to generate an aerosol, the aerosol-generating article not including an aerosol-forming substrate that is configured to be combusted to produce smoke; and an outermost wrapper around at least a portion of the aerosol-forming substrate, an outer surface of the outermost wrapper forming at least part of an outer surface of the aerosol-generating article, the outermost wrapper including a metallized substrate including a substrate layer and a metal layer radially outward of the substrate layer, and the substrate layer being coated with the metal layer by vapour deposition.
1. An aerosol-generating article, comprising:
an aerosol-forming substrate configured to be heated to generate an aerosol, wherein the aerosol-generating article does not comprise an aerosol-forming substrate that is configured to be combusted to produce smoke; and
an outermost wrapper around at least a portion of the aerosol-forming substrate,
wherein an outer surface of the outermost wrapper forms at least part of an outer surface of the aerosol-generating article,
wherein the outermost wrapper comprises a metallized substrate comprising a substrate layer and a metal layer radially outward of the substrate layer, and
wherein the substrate layer is coated with the metal layer by vapour deposition.
2. The aerosol-generating article according to claim 1 , wherein the metal layer of the metallized substrate has a thickness of greater than or equal to 5 nm.
3. The aerosol-generating article according to claim 1 , wherein the metal layer of the metallized substrate has a thickness of between 10 nm and 60 nm.
4. The aerosol-generating article according to claim 1 , wherein the metal layer of the metallized substrate is an aluminum layer.
5. The aerosol-generating article according to claim 1 , wherein the substrate layer of the metallized substrate has a thickness of between 40 μm and 80 μm.
6. The aerosol-generating article according to claim 1 , wherein the substrate layer of the metallized substrate is a paper layer.
7. The aerosol-generating article according to claim 6 , wherein the paper layer of the metallized substrate has a basis weight of between 35 grams per square meter and 60 grams per square meter.
8. The aerosol-generating article according to claim 1 , wherein the outermost wrapper further comprises a surface coating on at least a portion of an outer surface of the metal layer of the metallized substrate.
9. The aerosol-generating article according to claim 8 , wherein the surface coating comprises one or more inorganic materials selected from the group consisting of graphite, metal oxides, and metal carbonates.
10. The aerosol-generating article according to claim 1 , wherein the outer surface of the outermost wrapper has an emissivity of less than or equal to 0.6.
11. The aerosol-generating article according to claim 1 , wherein the outer surface of the outermost wrapper has an emissivity of greater than or equal to 0.1.
12. The aerosol-generating article according to claim 1 , further comprising a heat-conducting element radially inward of the outermost wrapper.
13. The aerosol-generating article according to claim 12 , wherein the outermost wrapper is around at least a portion of the heat-conducting element.
14. The aerosol-generating article according to claim 1 , further comprising a heat source.
15. The aerosol-generating article according to claim 14 , wherein the heat source is a combustible heat source.
16. The aerosol-generating article according to claim 15 , wherein the aerosol-forming substrate is downstream of the combustible heat source.
17. The aerosol-generating article according to claim 14 , wherein the outermost wrapper is around at least a portion of the heat source.