KR20020016635A - Filter cigarette with a tobacco filter - Google Patents

Abstract

The present invention relates to a tobacco filter for smoking products, wherein the tobacco material selected for the filter or the portion thereof is subjected to heat treatment during the tobacco production process.

Description

Filter Cigarette with Cigarette Filter {FILTER CIGARETTE WITH A TOBACCO FILTER}

It has long been known that filter materials of smoking products can be used in tobacco. However, compared to other common materials such as cellulose or cellulose acetate, tobacco has nicotine with low retention for condensate and the same degree of intake resistance. In addition, it is not easy to obtain a general degree of suction resistance when using a common tobacco leaf mixture used for cigarettes, ie, a filter made of cellulose acetate or a cellulose filter of 50 to 100 mmWC used for a filter length of 21 mm.

In order to overcome this drawback, many solutions have already been proposed, one of which is the manufacture of the filter part from the cut rolled stem tobacco part. However, this leads to a decrease in the taste of tobacco. There is another proposal to make the filter part from the expanded tobacco (expandedtobacco), but the filter effect is not satisfactory because of the very low retention. Finally, very finely cut tobacco leaves have also been proposed as filter elements, but cannot be produced on a normal machine, resulting in a filter price increase.

The present invention relates to filter cigarettes having a tobacco leaf filter and a method of making such filter cigarettes.

It is therefore an object of the present invention to make a filter from tobacco leaves for smoking articles which does not have the above mentioned disadvantages.

This object is achieved by a filter cigarette having a tobacco leaf filter comprising the following features: tobacco leaf strands wrapped in cigarette paper; A tobacco leaf mixture of tobacco leaf strands comprising a cut medium cut rolled stem at a ratio of 15-30%; And the smoke condensation rate of the tobacco leaf strand results in a strand 63 mm long and condensate between 15 and 19 mg at 55 mm long; A filter made from a directional tobacco leaf having a suction resistance of 50 to 100 mmWC at a length of 21 mm; And a filter vent zone in the circumferential direction; Here, the filter air permeability is 30 to 70%, the filter tobacco leaf is characterized in that it is manufactured without using a tobacco leaf having a cutting width of 0.3 to 0.6 mm without using the intermediate cut roll stem and the filter is 350 to 450 g Tobacco leaf density of / cm ³ .

Therefore, this can be achieved by the use of aromatic tobacco leaves in the tobacco filter, the taste of the cigarette being greatly characterized by the filter material. The special treatment of selected tobacco leaves increases the benefits of tobacco taste enhancement once more clearly. For this purpose, the selected tobacco leaf material or part thereof must be subjected to the heat treatment described later.

Heat treatment:

During the manufacturing process of the tobacco leaves, the tobacco leaves rise to a tobacco leaf temperature between 60 ° C and 150 ° C for 1 minute up to 15 minutes, preferably at a temperature of 80 ° C to 130 ° C. During this period, a relative humidity of 40 to 80% is applied, preferably 50 to 70%. This causes the significantly improved transfer of fragrance from the filter tobacco leaves to pass through the cigarette. The effect can optionally be influenced and increased with the addition of a suitable casing material. A slightly finer width of 0.3 to 0.6 mm can be chosen to go through the process in a general machine (0.7 to 1.0 mm is common for strand cut tobacco), then typical of a filter of 50 to 100 mmWC. Suction resistance can be achieved and the holding power is increased significantly. The suction resistance is generally referred to as "average" or general resistance resistance. However, the retention can be complemented by the use of strand mixtures with significantly reduced condensation power in the range of typical filter materials which are about 30-60% cellulose acetate and about 25-30% tobacco filter. This means that tobacco smoke produces approximately 16 mg of condensate instead of the approximately 23 mg of condensate that normally appears.

Although the mixture, which can be produced with a high percentage of cut rolled stems or inexpensive tobacco leaves, is not particularly good in taste, the taste of the cigarette is surprisingly pleasant when passing through the tobacco filter. .

Claims (2)

Filter tobacco leaves are prepared without the use of intermediate cut rolled stems and without reconstituted tobacco with a cutting width of 0.3 to 0.6 mm; And The filter is characterized in that having a tobacco leaf density of 350 to 450 g / cm ³ , Tobacco leaf strands dried on cigarette paper; (Here, the tobacco leaf mixture of tobacco strands comprises a medium cut rolled stem in a ratio of 15 to 30%, and the smoke condensation of the tobacco strands is 15 for strand lengths of 63 mm and smoking lengths of 55 mm. To 19 mg) A filter made from a scented tobacco leaf having a suction resistance between 50 and 100 mmWC at a length of 21 mm; And A filter cigarette having a tobacco leaf filter having a circumferential filter venting zone (the filter venting is 30 to 70%). The tobacco leaf used to make the tobacco filter is raised to a tobacco leaf temperature between 60 ° C. and 150 ° C., preferably between 80 ° C. and 130 ° C., for a time between 1 minute and up to 20 minutes during the tobacco production process. Characterized in that it is placed at a relative humidity of 40 to 80%, preferably 50 to 70%, during which the filter cigarette according to claim 1 is prepared.