P.h. Glatfelter Company

Richard H Martin

William F Owens, Jr

Clifford M Kaufman

Gary W Wise

Treating cigarette paper with (1) binary combinations of the sodium and potassium salts of a carboxylic acid or (2) binary combinations of an alkali metal chloride and an alkali metal carboxylate provides a means of controlling the static burning rate of cigarettes wrapped in these papers. Burn rate control is functionally implemented by varying (1) the sodium to potassium cation ratio at constant total alkali metal cation weight for the former binary combination and (2) the ratio of the alkali metal cation from the chloride to the alkali metal cation from the carboxylate at constant total alkali metal cation weight for the latter binary combination. This means of burn rate control is effective for cigarette papers containing various inorganic fillers and weighing less then 25 g/m.sup.2 to over 45 g/m.sup.2. Depending on the specific combination of salts, type cigarette paper and total alkali metal cation weight in the sheet, the static burning rate can be controlled over a range of 6 to 19 mg/min as the sodium/potassium ratio or alkali metal cation (from chloride)/alkali metal cation (from carboxylate) ratio is incrementally varied.

Control of static burning rate by use of binary burnign chemical

A smoking article wrapper which when combined with a suitable tobacco column produces up to 75% less particulate sidestream smoke than do prior art cigarette paper wrappers and to methods of producing same. The paper conains freshly precipitated magnesium hydroxide filler precipitated by an equal or near equal stoichiometric addition rate process in the presence of the particulate magnesium hydroxide and/or calcium co-filler(s) and in the absence of the cellulosic pulp fibers.

Smoking article wrapper and method of making same

A cigarette paper which when fabricated into a cigarette with a suitable tobacco column produces up to 80% less particulate sidestream smoke than do cigarettes fabricated with conventional cigarette paper wrappers. This reduction of sidestream smoke is accomplished by incorporation of a mixture of freshly precipitated and particulate magnesium hydroxides in the cigarette paper sheet as paper fillers. The high percentage reductions in sidestream particulate smoke are obtained when the median particle size of the particulate magnesium hydroxide filler is relatively large, e.g., 15 micrometers.

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Brevard, NC, United States of America

Richard H Martin