Reduced ignition propensity smoking article

A wrapper for a smoking article having reduced ignition propensity, the wrapper having a base permeability and comprising:

• at least one untreated area and
• at least one discrete area treated with a
• a permeability reducing substance,
• a burn rate retarding substance and
• a burn rate accelerating substance,
• wherein the at least one discrete area has a lower permeability than the base permeability of the wrapper.

A method for making a smoking article having reduced ignition propensity comprising:

• forming a paper having a base permeability;
• treating a plurality of discrete areas of the paper with a permeability reducing substance, a burn rate retarding substance and a burn accelerating substance;
• forming the paper into a wrapper for a smoking article;
• and
• surrounding a tobacco column having a proximal end and a distal end with at least a portion of the wrapper so that at least one discretely treated area substantially surrounds the tobacco column between the ends or the wrapper-surrounding tobacco column so that as a coal of burning tobacco firecone advances by said at least one discrete treated area, the smoking article self-extinguishes if placed on a surface.

A method for making a wrapper for a smoking article having reduced ignition propensity comprising:

• forming a paper having a base permeability;
• treating a plurality of discrete areas of the paper with a permeability reducing substance, a burn rate retarding substance and a burn rate accelerating substance, wherein at least one of said burn rate retarding substance and said burn rate accelerating substance is further an organoleptic enhancing substance that substantially reduces any difference in a smoker's experience between the smoking of said differently treated areas and untreated areas;
• and
• forming the paper into a wrapper for a smoking article.

A method for making a smoking article having reduced ignition propensity comprising:

• forming a paper having a base permeability;
• treating a plurality of discrete areas of the paper with a permeability reducing substance, a burn rate reducing substance and a burn rate accelerating substance;
• forming the paper into a wrapper for a smoking article;
• surrounding a tobacco column having a proximal end and a distal end with at least a portion of the wrapper so that at least one discrete treated area is between the ends of the wrapper-surrounded tobacco column so that as a coal of a burning tobacco firecone advances by said at least one discrete treated area, the smoking article self-extinguishes if placed on a surface;
• and
• adding a filter element to at least one end of the wrapper-surrounded tobacco column, wherein at least one of said burn rate retarding substance and said burn rate accelerating substance is further an organoleptic enhancing substance that substantially reduced any difference in a smoker's experience between the smoking of said at least one treated area and said untreated area during smoking of the smoking article.

A smoking article having reduced ignition propensity comprising:

• (a) a tobacco column;
• (b) a wrapper surrounding the tobacco column and having a base permeability, the wrapper comprising:
• (1) at least one untreated area being substantially free of a permeability reducing substance and a burn rare retarding substance and
• (2) at least one discrete area comprising a circumferential band treated with a permeability reducing substance, a burn rate retarding substance and a burn rate accelerating substance, and having a lower permeability than the base permeability of the wrapper.

A smoking article having reduced ignition propensity comprising:

• (a) a tobacco column;
• (b) a wrapper surrounding the tobacco column and having a base permeability, the wrapper comprising:
• (1) at least one untreated area having a porosity of at least 17 CORESTA units and
• (2) at least one discrete area treated with a permeability reducing substance, a burn rate retarding substance and a burn rate accelerating substance, and having a lower porosity than the porosity of the at least one untreated area of the wrapper.

A smoking article having reduced ignition propensity comprising:

• (a) a tobacco column forming a tobacco firecone when the smoking article is ignited;
• (b) a wrapper surrounding the tobacco column and having a base permeability, the wrapper comprising:
• (1) at least one untreated area being substantially free of any permeability reducing substance and burn rate retarding substance and having a combustion characteristic such that as a coal of burning tobacco firecone advances along the wrapper portion the smoking article with freeburn;
• and
• (2) at least one discrete area comprising a circumferential band treated with a permeability reducing substance, a burn rate retarding substance and a burn rate accelerating substance, and having combustion characteristic such that as a coal of the burning firecone advances along the discrete area the smoking article will self-extinguish if it placed on a substrate and will freeburn if it is freely suspended.

A smoking article having reduced ignition propensity comprising:

• (a) a tobacco column;
• (b) a swapper surrounding the tobacco column and having a base permeability, the wrapper comprising:
• (1) at least one untreated area being substantially free of a permeability reducing substance and a burn rate retarding substance and
• (2) at least one discrete area treated with
• (i) at leant one polysaccharide selected from the group consisting of starch, modified starch, cellulose, chitosan, chitin, alginate and derivatives thereof;
• (ii) at least one phosphate selected from the group consisting of monoammonium phosphate and diammonium phosphate;
• and
• (iii) at least one burn rate accelerating substance selected from the group consisting of sodium citrate and potassium citrate.