Cynthia S Davis

US Patent:

53220765, Jun 21, 1994

Filed:

Feb 6, 1992

Appl. No.:

7/833193

Inventors:

Paul A. Brinkley - Winston-Salem NC
Cynthia L. Davis - Mocksville NC
Mark L. Raker - Clemmons NC
James S. Thomasson - Statesville NC

Assignee:

R. J. Reynolds Tobacco Company - Winston-Salem NC

International Classification:

A24B 314

US Classification:

131374

Abstract:

A tobacco-containing paper is provided using a reconstituted tobacco material as a component thereof. A reconstituted tobacco material, provided using papermaking techniques from a refined tobacco pulp, is refined into a pulp form and provided as a slurry in water. The slurry is combined with inorganic filler (e. g. , calcium carbonate particles) and cellulosic pulp (e. g. , wood pulp). The resulting slurry is then employed to provide a paper using papermaking techniques. The tobacco-containing paper has many desirable physical characteristics.

US Patent:

52614255, Nov 16, 1993

Filed:

Feb 27, 1991

Appl. No.:

7/661747

Inventors:

Mark L. Raker - Clemmons NC
Barbara W. Arzonico - Lewisville NC
Patricia F. Perfetti - Winston-Salem NC
Thomas L. Gentry - Winston-Salem NC
Cynthia L. Davis - Mocksville NC

Assignee:

R. J. Reynolds Tobacco Company - Winston-Salem NC

International Classification:

A24D 102

US Classification:

131365

Abstract:

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.