Abstract: An aerosol former for heat-not-burn and biodegradable e-cigarette includes a sectional member wrapped by a paper material. At least one section is a botanical section connected to more than one e-liquid section when used for heat-not-burn cigarettes, and without the botanical section when used for e-cigarettes. The e-liquid sections include a heated segment and a vapor permeable liquid-flow-inhibiting thermal barrier. Each of the heated segments may include a sandwich structure. The structure may include a porous sponge layer made from a cellulose fiber based non-woven material which is installed inside a base frame aluminum foil structure. Each of the vapor permeable liquid-flow-inhibiting thermal barriers may have a first layer made of a hard non-porous hydrophobic non-woven fiber, and a second outside, external layer made from a hydrophobic cellulose fiber. The second layer forms a limiting surface barrier for the first layer.

Abstract: A heat-not-burn tobacco aerosol source member or consumable includes a first heating section with a front end. The first heating section contains a liquid aerosol precursor existing as a free liquid in an unbound form. A second heating section is provided with a mouth end. The second heating section contains a solid tobacco substrate. A first thermal barrier that is vapor permeable but liquid impermeable is located between the first heating section and the second heating section. The system has a simple structure and lowers processing costs, and greatly reduces undesirable harmful chemicals because of its lower heating temperatures for the first and second heating sections of the consumable.