Method of producing a tobacco product for smoking

Details Method of producing a tobacco product for smoking Method of producing a tobacco product for smoking

1996-09-23

1998-01-20

Millin, Vincent

Tobacco

Method or apparatus for making reconstituted tobacco

Extrusion

131355, A24B 314

Patent

active

057092290

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

The invention relates to a method of producing a tobacco product for smoking.
DE-33 39 247 C1 discloses a method of producing crimped stranded articles from reprocessed tobacco, in which tobacco dust and/or tobacco waste is processed with binders, and optionally additives, to form a plasticizable mixture. In an extruder, a cylindrical rod of the plasticized mixture is converted into a thin-walled, continuously widening hollow body and divided into elongate, crimped intermediate products which are then separated into individual crimped stranded articles.
DE-38 19 534 C1 discloses a method of producing homogenized tobacco leaf articles from reprocessed tobacco. In this case, particulate tobacco waste and/or tobacco powder is mixed with binders, and optionally additives, and the mixture thus obtained is plasticized in an extruder. The plasticized mixture is distributed, via extrusion paths of exactly equal length, into an even number of mechanically and geometrically identical cylindrical rods. Each pair of identical adjacent rods is rolled together to form a homogenized tobacco leaf billet which is then cut up into the homogenized leaf articles. The mixture is plasticized in the extruder at temperatures of 90.degree. to 120.degree. C. and pressures of 50 to 100 bar. The cylindrical rods have a diameter of 2 to 7 mm.
DE-40 05 656 A1 describes a method of producing of a tobacco-containing homogenized leaf product with enhanced consistency. In this case, a raw mass with a tobacco content of about 86 to 98% by weight is mixed with humectants in a proportion of about 1 to about 6% by weight and binders in a proportion of about 1 to about 8% by weight, with a water content in the ratio of 80:20 to 60:40. The wet raw mass is then extruded in an extruder with a temperature profile of about 30.degree. C. to about 160.degree. C. at a pressure of about 10 to about 200 bar, and is pressed through a nozzle provided with an outlet slit, which produces the homogenized tobacco leaf. This homogenized tobacco leaf is then vigorously heated on both sides, as a result of which substantially gas-impermeable cover layers form on the homogenized tobacco leaf. By means of a further vigorous supply of heat, the water contained in the homogenized tobacco leaf is vaporized between the cover layers, which produces bubble-like cavities.


SUMMARY OF THE INVENTION

The object of the invention is to develop a novel tobacco product for smoking and a method for its production.
This object is achieved according to the invention by carrying out the following method steps: as binder, and additives is produced; application of thermal and mechanical energy; channels; the channels, is expanded or foamed by the drop in temperature and pressure, hardened as a continuous, porous, cylindrical rod and cut to the desired lengths.


DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The channels produced by injecting steam into the mixed mass remain in the form of longitudinal and radial channels in the extruded rod. When this rod is smoked, the same process as in a conventionally produced tobacco rod takes place, with the difference that the combustion air is sucked through the set air channels instead of through gaps in the comminuted tobacco. Nevertheless, the rod produced according to the invention is also air-permeable enough for the combustion air during smoking to be sucked uniformly through the cross section of the rod and the length of the rod, without the suction resistance then provided by the rod exceeding an upper value.
Native and/or modified starch may be used as binder, the binder proportion being advantageously about 15% by weight.
Humectants such as glycerol, molasses and/or other hygroscopic substances may be admixed as additives.
Furthermore, burning enhancers may be provided as additives, for example organic acids for making the ash burn white, and/or carbonates or wetting agents for improving burning qualities.
Finally, flavorings and/or spices may also be provided as additives, for example flavoring precur

REFERENCES:
patent: 3098492 (1963-07-01), Wurzburg
patent: 4598721 (1986-07-01), Stiller et al.
patent: 4632131 (1986-12-01), Burnett et al.
patent: 5097851 (1992-03-01), Ehling et al.

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