| 摘要 |
<p>A smoking article has a tobacco rod wrapped within a wrapping material and having first and second ends, a filter rod and ventilation, wherein the filter rod is 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, and wherein the wrapping material is provided with a first region having a first permeability and/or porosity, the first region extending longitudinally along the tobacco rod from an intermediate position along the portion of the tobacco rod which is not overlapped by the tipping material towards the tipping material and with a second region having a second porosity and/or permeability higher than the first porosity and/or permeability, the second region extending longitudinally along the tobacco rod from the intermediate position towards the second end of the tobacco rod.</p> |
