Abstract: A cigarette paper is shown which has a surface, at least a part of the surface having the properties of: no artificial perforation an air permeability of at least 15 CU, and for an exponent k measured with a measuring head with a rectangular opening of 2 mm by 15 mm in accordance with ISO 2965:2009, which is defined as: k = log ? Q 1 Q 2 log ? p 1 p 2 where: Q1 represents air-flow through the paper at a pressure difference p1=1.00 kPa, Q2 represents air-flow through the paper at a pressure difference p2=0.25 kPa, and wherein k?0.98 and k?0.8.

Abstract: A cigarette paper is shown which has the following properties over at least a part of its surface: no artificial perforation, the air permeability is at least 15 CU, preferably at least 20 CU, and especially preferably at least 25 CU, and for the exponent k, measured with a measuring head with a rectangular opening of 2 mm by 15 mm, in accordance with ISO 2965:2009, which is defined by k = log ? Q 1 Q 2 log ? p 1 p 2 with Q1: air-flow through the paper at a pressure difference p1=1.00 kPa and Q2: air-flow through the paper at a pressure difference p2=0.25 kPa, the following holds k?0.98, preferably k?0.95, especially preferably k?0.93, and k?0.80, preferably k?0.85.

Abstract: A cigarette paper is shown which has the following properties over at least a part of its surface: no artificial perforation, the air permeability is at least 15 CU, preferably at least 20 CU, and especially preferably at least 25 CU, and for the exponent k, measured with a measuring head with a rectangular opening of 2 mm by 15 mm, in accordance with ISO 2965:2009, which is defined by k = log ? Q 1 Q 2 log ? p 1 p 2 with Q1: air-flow through the paper at a pressure difference p1=1.00 kPa and Q2: air-flow through the paper at a pressure difference p2=0.25 kPa, the following holds k?0.98, preferably k?0.95, especially preferably k?0.93, and k?0.80, preferably k?0.85.

Abstract: The invention relates to cigarette paper (1) providing self-extinguishing properties to a cigarette made therefrom, wherein the cigarette paper comprises at least one discrete region (2) that is perforated and comprises a permeability to air that is greater than the permeability to air outside of the perforated region. The perforated region is preferably present in a finished filter cigarette in the vicinity of the filter (5).