R.j. Reynolds Tobacco Company

Thomas W Brown

James S Thomasson

Thomas A Perfetti

Paul Andrew Brinkley

Jack Gray Flinchum, Jr

Alan B Norman

Harvey J Young

Barry L Saintsing

Jerry W Lawson

Glenn E Creamer

William R Cook

Elwood L Williams, Jr

Barry L Bryant

Cynthia H Curtis

Reconstituted tobacco material is provided by extracting tobacco material using water to provide an insoluble portion and an aqueous extract. The insoluble portion is formed into a sheet-like shape. The aqueous extract is blended with a further tobacco extract which is provided by treating Burley tobacco strip with ammonia and steam. The aqueous tobacco extract and further tobacco extract optionally can be heat treated, contacted with a water soluble phosphate salt, and/or contacted with levulinic acid. The aqueous extract and further tobacco extract are combined with the insoluble portion, resulting in a reconstituted tobacco material. The reconstituted tobacco material is blended with other tobacco materials and employed as cut filler in cigarette manufacture.

Process for providing smokable material for a cigarette

A cigarette comprises a blend of tobacco materials. The blend includes volume expanded flue-cured tobacco cut filler and a reconstituted tobacco material in cut filler form. The reconstituted tobacco material includes calcium carbonate and tobacco parts which are formed into a sheet-like shape using a papermaking process. The cigarette can include a filter element provided from a non-woven polypropylene web, glycerin and a water soluble tobacco extract. Such a cigarette can generate low levels of visible sidestream smoke.

Cigarette

Reconstituted Tobacco has ammonia incorporated therein. Tobacco is extracted with water to yield an insoluble portion and an aqueous portion containing water soluble tobacco components. The aqueous portion is contacted with ammonia to yield an ammoniated extract. The extract is applied to the insoluble portion which has been formed into a sheet-like shape. The resulting tobacco composition is dried to yield a reconstituted tobacco material treated with ammonia.

Tobacco reconstitution process

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Winston-Salem, NC, United States of America

Thomas W Brown