A cigarette is provided with the tobacco column portion adjacent the filter assembly encased by a heat shrink material whereby as the burn approaches the butt the heat shrink material begins to contract radially and compress the encased tobacco column restricting the air flow therethrough. This reduces the diameter of burning column adjacent the filter assembly and thus extinguishes or at least confines the remaining tobacco in the cigarette.

An aerosol generating material is disclosed containing a blend of at least two plant fibers or aerosol generating materials. The reconstituted material can contain at least one of extracted Cannabis fibers and extracted cocoa husk fibers, in combination with at least one of extracted tobacco fibers, tobacco materials, extracted herbal plant fibers, and aerosol generating herbal plant materials. The reconstituted plant fiber material is capable of generating an aerosol, such as a smoke, that has a very mild and neutral or natural taste without any harsh components. The reconstituted plant fiber material contains no nicotine, low or no amounts of other active compounds, such as THC, and contains low to no amounts of harsh combustible compounds, such as tar.

An aerosol-generating article according to one aspect of the present disclosure may include a tobacco medium portion, a filter portion disposed to be spaced apart from the tobacco medium portion, a cooling portion disposed between the tobacco medium portion and the filter portion, and a heat transfer portion surrounding at least a portion of the cooling portion.

A paper well suited for use as a wrapper in heat but not burn sticks is disclosed. The paper includes a base web made from cellulosic fibers combined with a flame retardant filler and/or can include a coating formed from a reduced ignition composition.

A wrapping material for a smoking article is disclosed, which has a laminar shape that extends further in two mutually orthogonal spatial directions X and Y than in a third spatial direction Z orthogonal to the spatial directions X and Y. The wrapping material has, at least in part of its area, a first and a second diffusion capacity D.sub.1 and D.sub.2 for a diffusion of CO.sub.2 through the wrapping material in the +Z-direction and the Z-direction, respectively, wherein for the first and second diffusion capacity D.sub.1 and D.sub.2, each an average of 10 values, one or both of the following relationships (i) and (ii) hold:
|D.sub.1D.sub.2|0.03 cm/s(i)
at a probability of error of 1% $\begin{array}{cc}2\frac{.Math.D_1-D_2.Math.}{D_1+D_2}0.030.& \left(\mathrm{ii}\right)\end{array}$

A cigarette rolling paper and method for manufacture is disclosed which describes a cigarette rolling paper containing an inner paper that has plant oleoresins, essential oils, and or rosins applied to the inner paper through a screen printing process, which in turn is bound to an outer paper. The oleoresins are applied using both an evaporative and silk screen-printing technique. The final rolling paper contains an precise, pre-measured amount of oleoresin and is intended for flavoring and enhancing hand rolled cigarettes, and promoting a slow and even burn.

A process for reducing the permeability of a paper wrapper used in the construction of a smoking article is disclosed. The paper wrapper is treated with a film-forming composition that forms treated discrete areas on the wrapper. The treated discrete areas have a permeability within a predetermined range sufficient to reduce the ignition proclivity properties of a smoking article made with the wrapper. In accordance with the present invention, the film-forming composition is applied as multiple layers to the paper wrapper. After each application step, the wrapper is dried. Applying the film-forming composition to the paper wrapper in multiple layers minimizes distortion and other adverse affects that may occur to the wrapper.

A cigarette paper is disclosed that has at least one treated area to which a composition that contains filler particles or a mixture of filler particles is applied. The diffusion capacity thereby in the at least one treated area is less than in an untreated area of the cigarette paper, wherein at least 20% by weight, preferably at least 50% by weight and particularly preferably at least 70% by weight of the filler particles in the treated area are formed by a filler with a flaked shape or a filler with a cubic shape. Additionally or alternatively, a filler with a scalenohedral or rhombohedral crystal structure can be used, as long as the particle size distribution is selected appropriately.

This invention relates to an aerosol-generating article comprising an aerosol-forming substrate. The aerosol-generating article comprises a mouth end, a distal end, and a biomarker sensor, wherein the biomarker sensor is provided to the aerosol-generating article and at least 1 centimeter distant from the mouth end. This invention also relates to an aerosol-generating device and an aerosol-generating system comprising an aerosol-generating device and an aerosol-generating article. This invention also relates to a method for operating such aerosol-generating system.

There is provided an aerosol generating article (2) comprising a combustible heat source (4) having an upstream portion and a downstream portion. The aerosol generating article further comprises an aerosol-forming substrate (10) downstream of the heat source (4) and a wrapper (36) circumscribing an upstream portion of the aerosol-forming substrate (10) and the downstream portion of the combustible heat source (4). The aerosol generating article (2) further comprises a non-combustible coating (42) provided on the upstream portion of the combustible heat source (4) and not on the downstream portion of the combustible heat source (4), the non-combustible coating having a thickness of between about 30 micrometres and about 250 micrometres.