Reconstituted tobacco sheet and smoking article therefrom

Abstract

A smoking article having one or more reconstituted tobacco split inner wrap strips is described. One or more split inner wrap strips extend coaxially along the tobacco column between the inner surface of an outer wrap of cigarette paper and the tobacco column. The tobacco blend includes burley and a second tobacco, such as flue-cured, oriental, Maryland, or rare and exotic tobaccos, and combinations thereof. This blend improves burley smoke character without increasing Hoffman analyte levels, especially tobacco-specific nitrosamines (i.e., TNSAs). A cigarette with an improved burley smoke character without increasing Hoffman analyte levels is also described.

Description

BACKGROUND OF THE INVENTION The present invention relates to a process for making a reconstituted tobacco sheet and more particularly to a process for making a bandcast reconstituted tobacco sheet having burley, flue-cured, oriental, Maryland, rare and exotic tobaccos, and combinations thereof, contained in a gel matrix within the reconstituted tobacco sheet. Even more particularly, the tobacco sheets having burley, as well as flue-cured, oriental, Maryland, rare and exotic tobaccos, and combinations thereof, are slit into split inner wrap strips which are positioned within the tobacco rod's wrapper. Exotic tobaccos include, but are not limited to, Izmar, Sumsun, Yaka, Latakia, Perique, Cavendish, Rustica, Fire-cure, and Dark or Sun-cure. In the manufacturing of smoking articles and particularly cigarettes, it is common to use in the tobacco strip blend a percentage of strips of reconstituted tobacco. The reconstituted tobacco is generally prepared from tobacco fines, veins, stems...

AI Technical Summary

Benefits of technology

In view of known deficiencies associated with earlier smoking articles, a smoking article having reconstituted tobacco comprised of burley tobacco, as well as a second tobacco, such as flue-cured, oriental, Maryland, rare and exotic tobaccos, and combinations thereof, in the form of split inner wrap strips, is provided. The rare and exotic tobaccos may include, but are not limited to, Izmar, Sumsun, Yaka, Latakia, Cavendish, Rustica, Fire-cure, and Dark or Sun-cure. The split inner wrap strips constitute less than 9% of the total tobacco strip blend, but deliver a better smoke flavor, lower the ignition propensity, and increase puff number.

It is an object of the present invention to provide a smoking article including a burley skewed reconstituted tobacco sheet that provides a better tobacco smoke characteristic but minimizes TSNA formation.

Using burley bandcast reconstituted tobacco split inner wrap strips provides unique properties to cigarettes, such as lowering ignition propensity, improving smoke flavor, and increasing cigarette puff count while minimizing TSNA levels. With respect to sensory improvement, since combustion takes place preferentially towards the periphery or surface of the cigarette rod, most of the smoke products formed should be transferred to the mainstream smoke. Since cigarette burn temperature are generally lower on the outside of the rod and hotter within the core, the outer positioning of the split inner strip enables it to produce lesser chemical compounds than tobacco within the core, therefore, the split inner wrap contributes less to mainstream smoke Hoffman analyte (HA) deliveries. Hence, the use of burley tobacco to make reconstituted tobacco split inner wrap strips to insert into cigarette rods improves burley's smoke character, optimizes taste impact, and minimizes mainstream Hoffman analyte deliveries.

Problems solved by technology

Therefore, there is a considerable effort being expended in the industry to provide smoking articles which provide a low ignition propensity smoking article.

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