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1. AU2012360832 - Smoking article with front-plug and method

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[ EN ]
CLAIMS:
1.          A smoking article (1, 100, 200, 300) comprising a plurality of elements, including a front plug (2, 102, 202, 302) and an aerosol-forming substrate (7), assembled in contact with a cigarette paper (5) to form a rod (15), the rod (15) having a mouth end (20) and a distal end (30) upstream from the mouth end (20), in which the front-plug (2, 102, 202, 302) is located upstream of the aerosol-forming substrate (7) within the rod (15).
2.          A smoking article according to claim 1 in which the front-plug is substantially cylindrical and has a diameter of 5 mm or greater and a length of at least 2 mm.
3.          A smoking article (1, 100, 200, 300) according to claim 1 or 2 further comprising a filter (3) located at the mouth end (20) of the rod (15).
4.          A smoking article (1, 100, 200, 300) according to claim 1 2 or 3 in which the front-plug (2, 102, 202, 302) comprises a filter material such that air can be drawn through the front-plug (2, 102, 202, 302).
5.          A smoking article according to any preceding claim in which the front-plug comprises an aerosol-forming substrate material.
6.          A smoking article according to claim 5 in which the aerosol-forming substrate material comprises processed tobacco.
7.          A smoking article (1, 100, 200, 300) according to any preceding claim in which the front plug (2, 102, 202, 302) is penetrable by a heating element (8) of an aerosol-generating device (11) such that the heating element (8) can be inserted into the smoking article (1, 100, 200, 300) through the front-plug (2, 102, 202, 302) and contact the aerosol-forming substrate (7).
8.          A smoking article (100, 200, 300) according to claim 7 in which the front-plug (102, 202, 302) defines a hole (103, 303) or slit (203) through which the heating element (8) can pass.
9.          A smoking article (1) according to claim 7 in which the front-plug (2) is formed of a pierceable material.
10.        A smoking article (1, 200) according to any of claims 7 to 9 in which the front-plug (2, 202,) is configured to wipe a surface of the heating element (8) as the heating element (8) is withdrawn from the smoking article (1, 200).
11.        A smoking article (1, 100, 200, 300) according to any of claims 7 to 10 in which the front plug (2, 102, 202, 302) is configured to prevent egress of the aerosol-forming substrate (7) as the heating element (8) is withdrawn from the smoking article (1, 100, 200, 300).
12.        A method of using a smoking article (1, 100, 200, 300) comprising a plurality of elements, including a front-plug (2, 102, 202, 302) and an aerosol-forming substrate (7), assembled in the form of a rod (15), the method comprising the steps of:
inserting a heating element (8) into the smoking article (1, 100, 200, 300) through the front-plug (2, 102, 202, 302);
raising the temperature of the heating element (8) to heat the aerosol-forming substrate (7) sufficiently to form an aerosol; and
withdrawing the heating element (8) from the smoking article (1, 100, 200, 300).
13.        A method according to claim 12 in which the heating element (8) is inserted into the aerosol-forming substrate (7) and the front-plug (2, 102, 202, 302) prevents egress of the aerosol-forming substrate (7) when the heating element (8) is removed from the smoking article (1, 100, 200, 300).
14.        A method according to claim 12 or 13 in which the step of inserting involves piercing the front-plug (2) with the heating element (8).
15.        A method according to claims 12, 13, or 14 comprising the step of wiping a surface of the heating element (8) as the heating element (8) is withdrawn from the smoking article (1, 200).