EP1437948A1 - Cigarette having an increased tendency to self-extinguish - Google Patents

Cigarette having an increased tendency to self-extinguish

Info

Publication number
EP1437948A1
EP1437948A1 EP20020801805 EP02801805A EP1437948A1 EP 1437948 A1 EP1437948 A1 EP 1437948A1 EP 20020801805 EP20020801805 EP 20020801805 EP 02801805 A EP02801805 A EP 02801805A EP 1437948 A1 EP1437948 A1 EP 1437948A1
Authority
EP
Grant status
Application
Patent type
Prior art keywords
cigarette
polymer
paper
characterized
polyvinyl acetate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20020801805
Other languages
German (de)
French (fr)
Inventor
Markus Eibl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DELFORT GROUP AG
Original Assignee
TANN PAPIER
Tann-Papier GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00Cigars; Cigarettes
    • A24D1/02Cigars; Cigarettes with special covers
    • A24D1/025Cigars; Cigarettes with special covers the covers having material applied to defined areas, e.g. bands for reducing the ignition propensity

Abstract

The invention relates to a cigarette having an increased tendency to self-extinguish. The cigarette paper comprises annular areas, the porosity of said annular areas being reduced by the presence of a polymer having a surface tension of more than 33 mJ/m2.

Description

Cigarette with increased Selbstverlöschungstendenz

The invention relates to a cigarette with increased Selbstverlöschungstendenz, said cigarette paper having annular zones whose porosity is decreased by the presence of a polymer.

In recent years, the demand was set up especially in the US increasingly that ungelöscht left lying cigarette combustible materials and especially textiles (carpets) were not allowed to set fire. Although objectively the risk corresponding accidents is not very high, a number of proposals have been made, such as burning cigarettes are left could be brought to rapid extinction.

As typical of the prior art, the proposal by EP 0864259 can be considered. Here, a cellulose polymer is applied in a non-aqueous solution in the form of spaced rings on the cigarette paper. In the area of ​​these rings, the paper exhibits reduced porosity and the cigarette extinguishes when the burn-up to this ring advanced. For the Selbstverlöschungstendenz of cigarettes, there is a recognized standard, namely the NIST test (NIST Technical Note 1436 App.D). The object of the invention is the one hand, to meet the requirements of this test, on the other hand to avoid the disadvantages of the prior art. These are seen in the fact that the applied to the paper cellulose derivatives, fillers or hochvermahlenen fibers form a film on the surface of the cigarette, in whose area the thickness of the coated paper is markedly increased. is wanted contrast, for a material in which the desired Selbstverlöschungstendenz is not achieved by an outer film, but by changing the paper structure in the printed area. Se was not likely that the hydrophobic polymers actually penetrate into the hydrophilic paper. However, it turns out that when the interfacial tension of the polymers used in the vicinity of that is of regenerated cellulose, the polymer penetrates into the pore structure of the paper, without having a desired film formation occurs on the surface. It is advantageous if the polar fraction of the surface energy is as high as possible. Essential to the invention is thus that the interfacial tension of the polymer over 33 mJ / m 2.

Particularly suitable among other things, polyvinyl acetate, partially hydrolyzed polyvinyl acetate or polyvinyl alcohol have shown. Polyvinyl acetate is polar and its surface tension is 36.5 mJ / m 2. The non-polar ethylcellulose with 32 mJ / m 2, however, is discussed as film-forming and unusable in the invention. (All figures from: Polymer Data Handbook, 1999, Oxford University Press Inc.)

Of course, it is necessary to apply the selected polymer in a sufficient amount and in suitable geometric distribution to meet the criteria of the NIST tests. As for the distribution of the tapes, a width of more than 4 mm is favorable, though not critical. The bands, which stop the burning, of course, may not be attached at too long intervals also why these distances preferably below 20 mm.

As for the applied amount of the polymer, it must be observed by simple experiments, from which values ​​the sufficient Selbstverlöschungstendenz. It should be noted, the surprising established fact that a strong reduction of the porosity does not automatically lead to a significantly improved Selbstverlöschungstendenz. Only a further introduction of material into the paper leads to an almost abrupt increase in Selbstverlöschungstendenz. In particular, reference is made in this connection to the subsequently reproduced examples.

The manner of introduction of the polymer in the paper is not critical, but has proven to be the gravure technology. Due to the gravure printing the bands have a high edge definition, a steady increase in circulation from the edge to the center can not be determined. The application amount is set by the etching depth, the grid, the concentration and the viscosity of the printing solution.

To improve the opacity of the paper fillers can be used such as aluminum hydroxide, magnesium oxide or titanium oxide in the printing solution. However, the Selbstverlöschungstendenz of cigarettes, these fillers have no measurable influence.

Subsequently, the invention will be explained in more detail by way of examples.

example 1

Cigarette paper with an initial porosity of 38 CU with a solution of 35% polyvinyl acetate in ethyl acetate via low pressure (flow viscosity 4mm = 18s) imprinted 6 mm wide tapes with a distance of 19 mm. example 2

Cigarette paper with an initial porosity of 38 CU with a solution of 35% polyvinyl acetate in ethyl acetate via low pressure (flow viscosity 4mm = 1 8 s) printed 7 mm wide tapes with a distance of 20 mm.

example 3

Cigarette paper with an initial porosity of 38 CU with a solution of 35% polyvinyl acetate in ethanol by means of gravure printing (flow viscosity 4mm = 20 s) printed on 6 mm-wide tapes with a distance of 19 mm.

example 4

Cigarette paper with an initial porosity of 50 CU with a solution of 35% ethyl acetate in Polyvvinylacetat by gravure printing (flow viscosity 4mm = s 18) 6 mm wide tapes printed with a distance of 19 mm.

example 5

Cigarette paper with an initial porosity of 38 CU be a means of gravure printing with

Solution of 31% polyvinyl acetate and 7% aluminum hydroxide in ethyl acetate

(Flow viscosity 4mm = 21 s) 6 mm wide tapes printed with a distance of 19 mm.

example 6

Cigarette paper with an initial porosity of 38 CU with a solution of 23% polyvinyl acetate in ethyl acetate via low pressure (flow viscosity 4mm = 23 s) printed on 6 mm-wide tapes with a distance of 15 mm.

example 7

Cigarette paper with an initial porosity of 38 CU be a means of gravure printing with

Solution of 20% polyvinyl acetate and 8% aluminum hydroxide in ethyl acetate

(Flow viscosity 4mm = 25 s) 6 mm wide tapes printed with a distance of 15 mm.

Results:

The paper is cut into 27 mm wide reels. These are King

Filter cigarettes manufactured.

) * Paper porosity 39.8 CU

) ** Selbstverlöschungstendenz NIST Test App. D

Examples 6 and 7 confirm the statement made at the outset that a reduction in permeability measured in Coresta units (CU) does not guarantee the sufficient Selbstverlöschungstendenz. This is rather to directly measure and increase the circulation amount until the desired result is achieved.

Claims

Claims:
1. Cigarette with increased Selbstverlöschungstendenz, said cigarette paper having annular zones whose porosity is decreased by the presence of a polymer, characterized in that the interfacial tension of the polymer over 33 mJ / m 2.
2. The cigarette of claim 1, characterized in that the surface tension from 36 to 42 mJ / m 2.
3. The cigarette of claim 1 or 2, characterized in that the polymer comprises at least one of the compounds of polyvinyl acetate, polyvinyl acetate or polyvinyl alcohol teilhydrolysiert.es.
4. A process for the manufacture of cigarettes according to one of claims 1 to 3, characterized in that the polymer is dissolved in organic solvent applied by gravure printing onto the cigarette paper and penetrates to a large extent in the cigarette paper.
EP20020801805 2001-10-22 2002-04-24 Cigarette having an increased tendency to self-extinguish Withdrawn EP1437948A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT8182001U AT5523U1 (en) 2001-10-22 2001-10-22 Cigarette with increased selbstverlöschungstendenz
AT81801U 2001-10-22
PCT/AT2002/000126 WO2003034845A1 (en) 2001-10-22 2002-04-24 Cigarette having an increased tendency to self-extinguish

Publications (1)

Publication Number Publication Date
EP1437948A1 true true EP1437948A1 (en) 2004-07-21

Family

ID=3500437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020801805 Withdrawn EP1437948A1 (en) 2001-10-22 2002-04-24 Cigarette having an increased tendency to self-extinguish

Country Status (5)

Country Link
US (1) US20040221861A1 (en)
EP (1) EP1437948A1 (en)
JP (1) JP4048374B2 (en)
CA (1) CA2464158A1 (en)
WO (1) WO2003034845A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6779530B2 (en) 2002-01-23 2004-08-24 Schweitzer-Mauduit International, Inc. Smoking articles with reduced ignition proclivity characteristics
US20050005947A1 (en) 2003-07-11 2005-01-13 Schweitzer-Mauduit International, Inc. Smoking articles having reduced carbon monoxide delivery
US8151806B2 (en) 2005-02-07 2012-04-10 Schweitzer-Mauduit International, Inc. Smoking articles having reduced analyte levels and process for making same
WO2007042077A1 (en) * 2005-10-12 2007-04-19 Glatz Feinpapiere Julius Glatz Gmbh Smoking product wrapping material having improved smouldering properties
WO2007143101A3 (en) 2006-06-01 2008-03-20 Schweitzer Mauduit Int Inc Free air burning smoking articles with reduced ignitiion proclivity characteristics
GB0903136D0 (en) * 2009-02-25 2009-04-08 British American Tobacco Co Smoking articles and method for manufacturing smoking articles
DE102009030546B3 (en) * 2009-06-25 2011-01-20 Delfortgroup Ag The film-forming composition for application to cigarette paper, cigarette paper, cigarette and method for producing a cigarette paper
KR20150064750A (en) 2012-10-11 2015-06-11 슈바이쳐-모뒤 인터내셔널, 인크. Wrapper having reduced ignition proclivity characteristics
DE112014004958A5 (en) 2013-10-31 2016-07-21 Schaefer Kalk Gmbh & Co. Kg Article lower flammability

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB251322A (en) * 1924-12-31 1926-04-30 Walter Everett Molins Improvements in or relating to cigarette making machines
US2666437A (en) * 1950-06-10 1954-01-19 Lattof Alphonse Cigarette extinguisher
US2795009A (en) * 1951-05-11 1957-06-11 Westinghouse Electric Corp Process for producing sealed electrical members
JPS5652304B2 (en) * 1972-06-09 1981-12-11
US4452259A (en) * 1981-07-10 1984-06-05 Loews Theatres, Inc. Smoking articles having a reduced free burn time
US4480650A (en) * 1982-03-02 1984-11-06 Friedrich Weinert Coated self-extinguished cigarette
US4739775A (en) * 1986-09-26 1988-04-26 Kimberly-Clark Corporation Wrapper constructions for self-extinguishing and reduced ignition proclivity smoking articles
US5820998A (en) * 1994-03-08 1998-10-13 Schweitzer-Mauduit International, Inc. Coated paper and process for making the same
US5878754A (en) * 1997-03-10 1999-03-09 Schweitzer-Mauduit International, Inc. Smoking article wrapper for controlling ignition proclivity of a smoking article
US5878753A (en) * 1997-03-11 1999-03-09 Schweitzer-Mauduit International, Inc. Smoking article wrapper for controlling ignition proclivity of a smoking article without affecting smoking characteristics
CA2277131A1 (en) * 1998-08-14 2000-02-14 Schweitzer-Mauduit International, Inc. Process for increasing the wet strength of porous plug wraps for use in smoking articles
US6929013B2 (en) * 2001-08-14 2005-08-16 R. J. Reynolds Tobacco Company Wrapping materials for smoking articles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03034845A1 *

Also Published As

Publication number Publication date Type
US20040221861A1 (en) 2004-11-11 application
JP2005506079A (en) 2005-03-03 application
WO2003034845A1 (en) 2003-05-01 application
CA2464158A1 (en) 2003-05-01 application
JP4048374B2 (en) 2008-02-20 grant

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