SK284374B6 - Cigarette with tobacco filter and method for production thereof - Google Patents

Abstract

A cigarette with tobacco filter, which is created by a tobacco strand enclosed by a cigarette paper. The tobacco mixture of a tobacco strand contains a proportion of 15 to 30 % of cut medium rolled leaves. The smoke condensate yield of a tobacco strand is between 15 and 19 mg condensate for a strand length of 63 mm and smoking length of 55 mm. A filter is manufactured with a filter ventilation zone running in circumferential direction, wherein the degree of filter ventilation is 30 to 70 %. The filter tobacco is manufactured with using only base part of a tobacco leaf, therefore blade and side stems of leaves with a width of cut of 0.3 to 0.6 mm. The filter has a tobacco packing density o 350 to 450 mg/cm3.

Description

Technical field

The invention relates to a tobacco filter cigarette and to a method of making such a filter cigarette.

BACKGROUND OF THE INVENTION

It has long been known that tobacco itself can also be used as a filter material for tobacco products. However, compared to other filter materials such as cellulose (paper) or cellulose acetate used, the tobacco has a significantly lower retention power for condensate and nicotine at the same tensile resistance. In addition, it is not easy to achieve the tensile resistance that is common to cellulose filters or cellulose acetate filters when using conventional tobacco mixtures as used for cigarettes, that is to say between 50 and 50 mm for a filter length of, for example, 21 mm. 100 mm water column.

To overcome this disadvantage, various solutions have already been made, namely to produce part of the filter from coarse pipe tobacco. However, this brings a bad taste. On the one hand, it was proposed to make the filter section of expanded tobacco, which, however, provided little retention power and thus insufficient filtration effect. Finally, very fine-cut tobacco has been proposed as a filter element; however, it cannot be processed on conventional machines and this would lead to high filter costs.

It is therefore an object of the invention to provide a tobacco filter for smoking articles that does not have the disadvantages mentioned in the prior art.

SUMMARY OF THE INVENTION

A tobacco filter cigarette having a tobacco strand surrounded by cigarette paper is used to solve this problem, wherein the tobacco strand blend comprises a proportion of 15-30% cut tobacco leaf ribs, wherein the tobacco strand condensate recovery is between 15 and 19 mg condensate at length. a strand of 63 mm and a blown length of 55 mm and containing a filter made of aromatic tobacco with a tensile resistance between 50 and 100 mm of water column at a length of 21 mm, and a filter ventilation zone extending in the circumferential direction; 70%, characterized in that the tobacco filter is made using only the base part of the tobacco leaf - the blade and the side ribs of the sheet, with a cutting width of 0.3 to 0.6 mm, the filter having a tobacco print density of 350 to 450 mg / cm ³ .

DETAILED DESCRIPTION OF THE INVENTION

Specifically, a tobacco filter cigarette having the following features has been produced: with a tobacco strand surrounded by cigarette paper, wherein the tobacco strand blend comprises a proportion of 15-30% of cut tobacco leaf mid fins wherein the tobacco strand condensate recovery is between 15 and 19 mg condensate at length a strand of 63 mm and a blown length of 55 mm and containing a filter made of aromatic tobacco with a tensile resistance between 50 and 100 mm of water column at a length of 21 mm, and a filter ventilation zone extending in the circumferential direction; 70%, characterized in that the tobacco filter is made using only the base part of the tobacco leaf - the blade and the side ribs of the sheet, with a cutting width of 0.3 to 0.6 mm, the filter having a tobacco print density of 350 to 450 mg / cm ³ .

Aromatic tobacco is used on the tobacco filter because the taste of the smoke is very strongly influenced by the filter material. It has been shown that, by special treatment of the selected tobacco, the effect improving the taste advantageously can be greatly increased. To this end, the selected tobacco material or a part thereof is subjected to a further heat treatment.

The tobacco is brought to a tobacco temperature between 60 ° C and 150 ° C, preferably 80 ° C to 130 ° C, during the treatment process between 1 minute and 20 minutes, preferably between 1 minute and 15 minutes. During this time it is exposed to a relative humidity of 40 to 80%, preferably 50 to 70%. This leads to a significantly improved passage of the flavor from the tobacco filter into the passing smoke. The effect can be targeted and enhanced by the addition of suitable perfume materials. If a slightly finer cut width of 0.3 to 0.6 mm is selected, which is still workable on standard machines (typically 0.7 to 1.0 mm for a cut strand of tobacco), then typical filter resistances can be achieved tensile, namely 50 to 100 mm water column, and the retention power greatly increased. Such tensile resistors are also generally referred to as "normal" or conventional tensile resistors. In spite of this, the retention performance is still considerably lower compared to conventional filter materials, for cellulose acetate reaching about 30 to 60%, while tobacco filters having only about 25 to 35%, can be compensated by using strand mixtures with a clearly reduced condensate potential . This means that tobacco strands are used which, when smoked by a smoking machine, deliver about 16 mg of condensate instead of the usual about 23 mg of condensate. Although such blends, which can be made with a high proportion of coarse tobacco or cheap tobacco, are not very good in terms of taste, the taste of the smoke passes surprisingly pleasant flavor when passing through the tobacco filter.

Claims (2)

A tobacco filter cigarette having a tobacco strand surrounded by cigarette paper, wherein the tobacco strand blend comprises a proportion of 15 to 30% cut middle ribs of tobacco leaves, wherein the tobacco strand smoke condensate recovery is between 15 and 19 mg of condensate at a strand length of 63 mm and a blown length of 55 mm, and comprising a filter made of aromatic tobacco with a tensile resistance of between 50 and 100 mm water column at a length of 21 mm; and with a filter ventilation zone extending in the circumferential direction; wherein the degree of ventilation of the filter is 30 to 70%, characterized in that the tobacco filter is made using only the base portion of the tobacco leaf, i.e. the blade and the side ribs of the sheet, with a cutting width of 0.3 to 0.6 The filter has a tobacco print density of 350 to 450 mg / cm ³ . Method for producing a filter cigarette according to claim 1, characterized in that the tobacco used for the manufacture of the tobacco filter is brought to a tobacco temperature between 60 ° C and 150 ° C over a period of time between 1 minute and a maximum of 20 minutes. preferably 80 ° C to 130 ° C, during which time they are exposed to a relative humidity of 40 to 80%, preferably 50 to 70%.