A - Human Necessities – 24 – B
Patent
A - Human Necessities
24
B
131/1, 31/1.16
A24B 3/14 (2006.01) A24B 15/14 (2006.01)
Patent
CA 1213432
- 27 - A B S T R A C T FOAMED, EXTRUDED, TOBACCO-CONTAINING SMOKING ARTICLE AND METHOD OF MAKING SAME A substantially cylindrical foamed, extruded, tobacco-containing smoking article is provided which has properties substantially equivalent to those of a conventional cigarette and which contains from about 5 to about 98 wt. % of tobacco particles having a part- icle size of up to about 5 mesh, from 0 to about 60 wt. % of a filler having a particle size of up to about 350 µm from about 2 to about 40 wt. % of a cellulosic binder selected from the group consisting of hydroxy- propyl cellulose, carboxymethyl cellulose, and its sodium, potassium and ammonium salts, cross-linked carboxymethyl cellulose, and its sodium, potassium and ammonium salts, hydroxyethyl cellulose, ethyl hydroxyethyl cellulose, hydroxypropyl methyl cellulose, methyl cellulose, ethyl cellulose, hydroxypropyl guar, and mixtures thereof, and from about 5 to about 20 wt. % water. The article has a density within the range of from about 0.05 to about 1.5 g/cc. The method of making such articles comprises the steps of (a) dry blending from about 5 to about 98 wt. % of the tobacco particles having an OV value of from about 3 to about 20%, with from 0 to about 60 wt. % of a filler and having particle size of up to about 5 mesh, and from about 4 to about 40 wt. % of the cellu- losic binder; then (b) admixing this dry blend with water to form a wet blend containing from about 15 to about 50 wt. % of water; then (C) extruding the wet blend under extrusion conditions of temperature and pressure such that as the wet blend is extruded the moisture in the blend is converted to steam thereby foaming the article.
444317
Keritsis Gus D.
Nichols Walter A.
Philip Morris Incorporated
Ridout & Maybee Llp
LandOfFree
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