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Modified reconstituted tobacco sheet

Inactive Publication Date: 2005-03-17
R J REYNOLDS TOBACCO COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012] Processes for making a reconstituted tobacco sheet are known in the art. The present invention provides a process for making a reconstituted tobacco sheet having a binder applied to the sheet to decrease sheet porosity, thereby lowering ignition propensity and cigarette burn rate. The binder may be alginate, guar, xanthum, acacia, pectin, other gums, and modified cellulose compounds. The resulting tobacco sheet with the applied binder is cut into lengths of preselected widths for use in a smoking article. In one embodiment, the strips are positioned longitudinally of the tobacco rod between the tobacco rod and an outer cigarette or smoking article wrapper.

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.

Method used

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  • Modified reconstituted tobacco sheet
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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0037] Several product examples were made using the construction of a partial strip wrap or partial inner wrap cigarette using the inventive techniques and construction described herein. In the examples, a control cigarette was used having no partial inner wrap strips which exhibited a linear burn rate of between 4.3-4.7 mm / min. Different materials were utilized, as detailed in the chart below, for the partial inner wrap strips ranging from standard treated paper to band cast tobacco material.

[0038] Examples of cigarettes with two band cast inner wrap strips having a porosity of band cast material less than 5 CORESTA units:

OuterOuterSelfWrapperWrapInnerInner StripLinear BurnExtinguishmentPorosityCitrateStripsWidthRate (LBR)On 10 layersCig.CORESTA%Numbermmmm / min%1500.5004.302500.5243.11003500.5252.61004500.5262.71005400.7004.706400.7233.8487300.6004.308300.6243.1100

[0039] Examples of cigarettes with two cigarette paper strips treated or covered with sodium alginate having a porosi...

example 2

[0050] In the process of making a reconstituted tobacco sheet, 500 pounds of a combination of tobacco and wood pulp (1:3 to 3:1 ratio) was extracted with 750 gallons of water in a mixing vessel, at 140° C. to 190° C. for 30 to 45 minutes. Following extraction, the mixture was separated into solids (fiber) and liquid (extract) streams via centrifugation, filtration, or pressing.

[0051] The liquid extract was concentrated by vacuum evaporation and mixed thoroughly with 60 pounds of glycerin. In a separate vessel, an alginate solution was prepared by thoroughly dispersing 40 pounds of sodium alginate in 135 gallons of water. The concentrated extract with glycerin was then thoroughly mixed with the alginate solution. Optionally, the liquid extract was gently agitated for 20 to 45 minutes with 75 pounds of a powdered solid adsorbent, such as bentonite (diatomaceous earth), carbon, cyclodextrin, cellulose acetate, or combinations thereof, to selectively remove nitrogen and other undesired...

example 3

[0053] Sheets were prepared and slit as described in Example 2, except that the alginate solution was added directly to the base sheet, instead of being mixed with the concentrated extract. Also, 25 pounds of precipitated chalk or chitosan (inorganic or organic inert fillers) were added to the refined pulp mixture before making base sheet over the Fourdriner machine wire. Other inert fillers include liposan and combinations of chalk, chitosan, and liposan.

[0054] It is to be understood that the invention is not to be limited to the specific examples shown, because the parameters set forth in the examples may be varied by appropriate changes of the amounts of the constituents within the reconstituted tobacco sheet mix used in the examples.

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Abstract

A reconstituted tobacco sheet for use in a cigarette includes up to about 80% by weight of wood pulp, up to about 30% by weight of a binder, and up to about 80% by weight of tobacco. A humectant and a flavor may be included. The reconstituted tobacco sheet is used in elongated strips along the outer surface of a tobacco rod between the tobacco rod and an inner surface of an outer wrap of cigarette paper

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This continuation-in-part application claims priority to and benefit from currently pending U.S. application Ser. No. 10 / 811,270, filed Mar. 26, 2004, which is a continuation-in-part of and claims priority to and benefit from currently pending U.S. application Ser. No. 10 / 299,231, filed Nov. 19, 2002, which are incorporated herein by reference.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] Not applicable. REFERENCE TO A “SEQUENTIAL LISTING,” A TABLE, OR A COMPUTER PROGRAM LISTING APPENDIX SUBMITTED ON A COMPACT DISC [0003] Not applicable. BACKGROUND OF THE INVENTION [0004] The present invention relates to a process for making a reconstituted tobacco sheet and more particularly to a process for making a reconstituted tobacco sheet including a flavoring compound contained in a gel matrix within the reconstituted tobacco sheet and even more particularly to a paper process for making a reconstituted tobacco sheet inc...

Claims

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Application Information

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IPC IPC(8): A24B15/14A24C5/18A24C5/20A24D1/02
CPCA24B3/14A24D1/025A24B15/14A24C5/005
Inventor WANNA, JOSEPH T.HICKS, DOUGLAS R.MONSALUD, LUIS JR.MUA, JOHN-PAUL
Owner R J REYNOLDS TOBACCO COMPANY
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