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Publication numberUS2580611 A
Publication typeGrant
Publication dateJan 1, 1952
Filing dateJun 23, 1951
Priority dateApr 25, 1946
Publication numberUS 2580611 A, US 2580611A, US-A-2580611, US2580611 A, US2580611A
InventorsLevy Robert M, Schur Milton O
Original AssigneeEcusta Paper Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Cigarette paper
US 2580611 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

Patented Jan. 1, 1952 CIGARETTE PAPER Milton 0. Schur, Asheville, and Robert M. Levy,

Brevard, N. 0., assignors to Ecusta Paper Corporation, a corporation of Delaware No Drawing. Original application April 25, 1946,

Serial No. 665,001. Divided and this application June 23, 1951, Serial No. 233,251

3 Claims. 1

Our invention relates to cigarette paper and more particularly to improving the burning properties of the paper when the cigarette is smoked so that the resulting ash has desirabe properties. An important feature of our invention is the modifying of the burning properties of cigarette paper to avoid formation of carbonized paper particles that commonly appear as black curling ashes. Such ashes tend to flake off and fall from the cigarette onto the smokers clothes.

We have discovered that by certain chemical treatment, described hereafter, of the pulp or furnish from which the cigarette paper is made,

the black, falling ashes can be substantiallv eliminated. Moreover, a clinging, grayish-white ash of pleasing appearance is produced when the cigarette using this paper is smoked. The ash produced is more cohesive than usual, and while it may be flicked off easily at the will of the smoker, it is sufficiently cohesive and integrated to avoid the frequent accidental dropping of the ash on the smokers clothes.

In accordance with our invention, we introduce into the paper pulp at the beater or in the machine stock chest and before the pulp reaches the paper machine, about /2% to 5% of caustic alkali, e. g., sodium hydroxide, and about to 5% of phosphoric acid. It is important to incorporate these chemicals in the bleached and beaten pulp, after all of the usual pulp treating operations have been completed and the finished pulp is ready for web formation on the paper machine. By incorporating the sodium hydroxide and phosphoric acid in the pulp at this stage, a certain proportion of these chemicals will be retained in the finished cigarette paper. The in situ. reaction products of the caustic alkali and phosphoric acid, the exact identity of which is not known, effect the above-mentioned improvements in burning properties of the paper when the cigarette is smoked, so that the resulting ash has desirable properties.

A typical but non-limiting example of the procedure used for carrying out the process of our invention is as follows:

To the beaten pulp in the machine stock-chest, we add 2 caustic soda (based on weight of pulp) in the form of a 2% solution. About fifteen minutes after the caustic soda has been mixed into the stock, we add 1%% phosphoric acid .(based on weight of pulp) in the form of a solu tion containing approximately 25% phosphoric acid. The final stock density in the chest is about 2 The filler, which is calcium carbonate, is now added in the desired proportions, for example, 40% based on fiber, of which about will be retained in the paper. This addition may take place in the chest or in the stock-line between the Jordan and the paper machine headbox.

The calcium carbonate filler, which is retained in the paper, is the principal ash-producing constituent of the cigarette paper when burned.

Various modifications and changes may be made in the foregoing process, materials and products, without departing from the spirit and scope of our invention as defined in the appended claims. For example, the above-mentioned sodium hydroxide may be substituted by potassium hydroxide.

This application is a division of our application Serial No. 665,001, filed April 25, 1946.

We claim:

1. A cigarette paper composed predominantly of cellulosic fibers and calcium carbonate filler and containing the in situ reaction products of about to 5% of caustic alkali and about /g% to 5% of phosphoric acid.

2. A cigarette paper composed predominantly of cellulosic fibers and calcium carbonate filler and containing the in situ reaction products of about to 5% of sodium hydroxide and about 12% to 5% of phosphoric acid.

3. A cigarette paper composed predominantly of cellulosic fibers and calcium carbonate filler and containing the in situ reaction products of approximately 2%% sodium hydroxide and 1%% Name Date Harrison et al Apr. 11, 1950 Number

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2503267 *Sep 16, 1944Apr 11, 1950Ecusta Paper CorpCigarette paper
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2652834 *Mar 7, 1952Sep 22, 1953Ecusta Paper CorpCigarette paper
US2652835 *Mar 7, 1952Sep 22, 1953Ecusta Paper CorpCigarette paper
US2673565 *Nov 9, 1951Mar 30, 1954Ecusta Paper CorpCigarette paper
US2738791 *Aug 30, 1951Mar 20, 1956Ecusta Paper CorpCigarette paper
US4452259 *Jul 10, 1981Jun 5, 1984Loews Theatres, Inc.Smoking articles having a reduced free burn time
US4486234 *Mar 17, 1982Dec 4, 1984Herr Alfons KFiber material
US5161551 *Apr 12, 1991Nov 10, 1992Philip Morris IncorporatedPaper wrapper having improved ash characteristics
US5540242 *Jul 7, 1993Jul 30, 1996Brown & Williamson Tobacco CorporationCigarette paper having reduced sidestream properties
US20030217757 *May 24, 2002Nov 27, 2003Andrea EdelmannCigar with a paper wrapper
US20070169786 *Dec 19, 2006Jul 26, 2007Philip Morris Usa Inc.Corrugated catalytic cigarette paper and cigarettes comprising the same
US20110094525 *Oct 27, 2010Apr 28, 2011Maal Pedro RSmoker's end cap for cigar/cigarillo
DE1033119B *Feb 1, 1957Jun 26, 1958Gerlach Gmbh EVerfahren zur Herstellung von Tabakfolien, insbesondere eines tabakhaltigen Umblattes
Classifications
U.S. Classification162/139, 162/181.2, 131/365
International ClassificationA24D1/00, A24D1/02
Cooperative ClassificationD21H5/16
European ClassificationD21H5/16