Patent ID: 9247771
Filing Date: 2016-02-02
CPC Classification: A24D

Claim Text:
1. A smoking article comprising: a tobacco rod wrapped within a wrapping material and having a first end and a second end; a filter rod; and a porous plug wrap material, configured to supply ventilation into the filter rod, covering the lateral surface of the filter rod, the filter rod connected to the first end of the tobacco rod by a tipping material partially overlapping the tobacco rod and at least partially overlapping the filter rod, the wrapping material provided with a first region having a first permeability and porosity, the first region extending longitudinally along the tobacco rod from an intermediate position along the portion of tobacco rod which is not overlapped by the tipping material towards the tipping material and with a second region having a porosity higher than the porosity of the first region and/or a permeability higher than the permeability of the first region, the second region extending longitudinally along the tobacco rod from the intermediate position towards the second end of the tobacco rod, and the first region being formed from a web of material having a permeability of less than 40 Coresta units, and the first region having a length in the range 40% to 80% of a total length of the tobacco rod.