An article for use with a non-combustible aerosol provision device including a mouth end segment to be received in the mouth of a user; an aerosol-generating material configured to generate an aerosol when the article is received in the device and a user draws on the mouth end segment, and a tubular cooling segment having a longitudinal axis and being located between the aerosol-generating material and the mouth end segment through which the aerosol flows towards the mouth end segment. The tubular cooling segment includes a ventilation region through which air is drawn into the tubular cooling segment and the ventilation region is configured such that a swirling flow is generated by air entering the tubular cooling segment through the ventilation region.

Provided are materials for making a hand rolled smoking article having a novel sheet. The sheet can include a rectangular portion and an irregular shaped portion. The sheet can be manufactured from tobacco leaf or foil, homogenized tobacco paper, or conventionally available rolling paper. The sheet can be filled with a filler material and rolled to form a cigar or cigarette.

An aerosol-generating article (10) comprising an aerosol-forming substrate (11) and a dual-layer wrapping structure (30). The dual-layer wrapping structure comprises an inner wrapper (31) that circumscribes the aerosol-forming substrate, the inner wrapper comprising an inner wrapper internal surface and an inner wrapper external surface opposite the inner wrapper internal surface. The dual-layer wrapping structure comprises an outer wrapper (32) that circumscribes the inner wrapper, the outer wrapper comprising an outer wrapper internal surface and an outer wrapper external surface opposite the outer wrapper internal surface. The outer wrapper internal surface and the inner wrapper external surface are attached to one another by means of a first adhesive (51). The dual-layer wrapping structure defines an overlapping region (41) in which the dual-layer wrapping structure overlaps itself, the overlapping region comprising a first section (42) and a second section (43) externally disposed on the first section, the first section and the second section being attached to one another by means of a second adhesive (52). The outer wrapper has a basis weight between about 10 grams per square metre and 28 grams per square metre.

A wrapping paper for smoking articles has a basis weight of at least 10 g/m.sup.2 and at most 70 g/m.sup.2 and comprises a mixture of cellulosic pulp fibers comprising at least 90% of short-fiber cellulosic pulp fibers, based on the mass of the cellulosic pulp fibers in the cellulosic pulp mixture, or comprising at least 95% of short-fiber cellulosic pulp fibers, based on the number of cellulosic pulp fibers, with at least 10% of the short-fiber cellulosic pulp fibers being ground, based on the mass of the number of cellulosic pulp fibers of the cellulosic pulp fiber mixture, and with the wrapping paper having over more than 50% of its area, preferably at least 55% of its area and especially preferably at least 60% of its area, an air permeability of at least 30 cm.sup.3/(cm.sup.2,min-kPa), and where the wrapping paper comprises at least one burning salt.

A carbon heat source (10) is equipped with: a cylindrical section (11) provided with a cavity (11A) through which there is ventilation communication in the longitudinal axis direction (L) of the carbon heat source (10); and an ignition end (12) which is provided further to the ignition side of the carbon heat source (10) than the cylindrical section (11). Therein, a groove (12A) which connects with the cavity (11A) is formed on the end surface (E) of the ignition side of the ignition end (12).

A carbon heat source (10) is equipped with: a cylindrical section (11) provided with a cavity (11A) through which there is ventilation communication in the longitudinal axis direction (L) of the carbon heat source (10); and an ignition end (12) which is provided further to the ignition side of the carbon heat source (10) than the cylindrical section (11). Therein, a groove (12A) which connects with the cavity (11A) is formed on the end surface (E) of the ignition side of the ignition end (12).

A flat-shaped tobacco article configured to operate with an aerosol generating device and extending along an article axis between a mouth end and an abutting end includes a mouthpiece portion adjacent to the mouth end and a tobacco portion adjacent to the abutting end, the tobacco portion including a substrate layer extending along the article axis and forming two opposite sides, a wrapper forming an internal surface and arranged around the substrate layer so that its internal surface is in contact with one side of the substrate layer and forms a gap with the other side of the substrate layer, the gap being adapted to receive a heating blade of the aerosol generating device.

An aerosol-generating article is provided, including: a rod of aerosol-generating substrate; and a ventilation zone arranged downstream the rod, the ventilation zone being configured as a hollow tubular ventilation zone and including perforations, one or more of the perforations has a non-circular cross-section having an ovality of at least 1.5, the ovality being a ratio of a large diameter of a perforation divided by a small diameter of the perforation, a thickness of a peripheral wall of the ventilation zone being between 0.1 millimeter and 2.5 millimeters, the one or more perforations having a width of between 0.05 millimeter and 0.2 millimeter, and the one or more perforations having a length of between 0.25 millimeter and 1.0 millimeter. An aerosol-generating system including an aerosol-generating device having a cavity configured to receive the aerosol-generating article is also provided. A method for manufacturing the aerosol-generating article is also provided.

There is provided an aerosol-generating article for producing an inhalable aerosol upon heating. The aerosol-generating article comprises a rod of aerosol-generating substrate. The aerosol-generating article comprises an air channelling element abutting the rod of aerosol-generating substrate. The air channelling element comprises a groove defined on an external surface. The groove defines an external air passageway extending from an upstream end of the air channelling element to a downstream end of the air channelling element. There is also provided an aerosol-generating system comprising the aerosol-generating article and an aerosol-generating device comprising an external heater, configured to receive and externally heat the aerosol-generating article.

The invention relates to a method for manufacturing a first ventilation zone in a first aerosol-generating article and a second ventilation zone in a second aerosol-generating article, comprising the method steps: A) providing a first aerosol-generating article, B) forming first perforations in the first aerosol-generating article, thereby creating a first ventilation zone, C) determining the first air infusion value for the first aerosol-generating article, the air infusion value being determined by the equation (P.sub.inP.sub.out).Math.100%/P.sub.in, wherein P.sub.in is the air pressure applied at the first end face of the article and P.sub.out is the air pressure detected at the second end face of the article, D) comparing said first air infusion value to a reference value, E) providing the second aerosol-generating article and forming second perforations in the second aerosol-generating article, thereby creating the second ventilation zone, wherein a size of the second perforations is adjusted based on the comparison between the determined first air infusion value and the reference value.