R.j. Reynolds Tobacco Company

Patricia F Perfetti

Thomas L Gentry

Paul Stuart Chapman

Richard L Lehman

Mark L Raker

Jerry W Lawson

Barbara W Arzonico

Elbert C Jones, Jr

Rhonda F Hayden

William R Cook

Hal E Guess

Cynthia L Davis

Ellen C Milford

Rebakah S Dunn

Gary R Andersen

A cigarette includes a charge or roll of smokable material (e.g., tobacco cut filler) circumscribed by two layers of paper wrapping materials. The first or inner wrapping material includes an inorganic filler material and tobacco material within the web. The inner wrapping material also can include a water soluble salt burn chemical and a carbonaceous material within the web. The second or outer wrapping material circumscribes and overwraps the first wrapping material, has a cellulosic base web and inorganic filler material, and exhibits a low inherent air permeability. The outer wrapping material can include a magnesium hydroxide filler, and exhibits an inherent air permeability of below about 15 CORESTA units and a net air permeability above about 40 CORESTA units. The cigarette is capable of sustaining smolder under FTC smoking conditions while yielding very low levels of visible sidestream smoke.

Cigarette

Cigarettes have a tobacco rod including smokable material circumscribed by a paper wrapper. The paper wrapper includes a cellulosic base web (e.g., flax and/or wood pulp fibers) and particles of at least one inorganic filler material. The inorganic filler material includes calcium sulfate, and normally fibers of calcium sulfate having an aspect ratio of about 30.

Cigarette paper and cigarette incorporating same

Cigarettes which yield low levels of visible sidestream smoke upon use employ a paper wrapping material having about 30 weight percent calcium carbonate and about 70 weight percent flax. The paper wrapper includes a coating or a film of polymeric material and an organic filler material. A preferred polymeric material is nitrocellulose, and a preferred inorganic filler material of the coating is particulate magnesium hydroxide. The coating weighs about 0.05 to about 0.5 pound per 3,000 square feet of wrapping material.

Cigarette and paper wrapper therefor

Cigarettes which yield low levels of visible sidestream smoke upon use employ a paper wrapping material having about 25 weight percent magnesium hydroxide, about 15 weight percent calcium carbonate and about 60 weight percent flax. The wrapping material has an inherent permeability of about 12 CORESTA units and a net permeability of about 100 to about 130 CORESTA units. The wrapping material containing an amount of water soluble alkali metal salt sufficient to provide at least about 35 mg water soluble alkali metal ions per gram of dry base web. The alkali metal salt is such that the wrapping material includes a significantly greater level of potassium ions than sodium ions. the cigarettes, when employed, provide cohesive ash which is not highly flakey.

Cigarettes which yield low levels of visible sidestream smoke upon use employ a paper wrapping material having about 25 weight percent magnesium hydroxide, about 15 weight percent calcium carbonate and about 60 weight percent flax. The wrapping material has an inherent permeability of about 12 CORESTA units and a net permeability of about 100 to about 130 CORESTA units. The wrapping material containing an amount of water soluble alkali metal salt and water soluble alkali earth metal salt sufficient to provide at least about 20 mg water soluble alkali metal and alkali earth metal ions per gram of dry base web. The cigarettes, when employed, provide cohesive ash which is not highly flakey.

Growing community of inventors

Winston-Salem, NC, United States of America

Patricia F Perfetti