Abstract This invention relates to a method for making a cigarette which has the same smoking properties as an ordinary cigarette but reduces components contained in the smoke of such a cigarette which cause cancer on the skin of mice. The method includes adding to the cigarette paper calcium sulfamate in an amount of from 0.1% to 1.0%, by weight, based on the combined weight of the tobacco and cigarette paper. Ammonia is added to the tobacco in an amount of from 0.015% to 0.15%, by weight, based on the combined weight of the cigarette paper and tobacco and the tobacco containing ammonia is wrapped with the cigarette paper containing the sulfamate salt. The preferred amount of calcium sulfamate in the paper, by weight, is from 0.2% to 0.8% and the preferred amount of ammonia in the tobacco is from 0.03% to 0.12%, by weight.
A method according to claim 1 wherein the amount of calcium sulfamate in the paper, by weight, is from 0.2% to 0.8% and the amount of ammonia in tobacco is from 0.03% to 0.12%, by weight.
Claim 2
Dependent Claim
25 words
A method according to claim 1 wherein the ammonia is uniformly distributed throughout the tobacco by contacting said tobacco with a solution of ammonium hydroxide.
Claim 3
Dependent Claim
16 words
A method according to claim 3 where the solution containing ammonium hydroxide is an aqueous solution.
Claim 4
Dependent Claim
15 words
A method according to claim 3 wherein the ammonium hydroxide is in an alcoholic medium.
Claim 5
Dependent Claim
25 words
A method according to claim 1 wherein the calcium sulfamate is added to the paper by contacting said paper with a solution containing calcium sulfamate.
Claim 6
Dependent Claim
16 words
A method according to claim 6 wherein the solution containing calcium sulfamate is an aqueous solution.