JPH03219862A - Filter for tobacco smoke - Google Patents

Abstract

PURPOSE:To provide a filter for tobacco smoke capable of selectively absorbing and removing nicotine contained in smoke of tobacco without impairing original taste of tobacco by adding sodium chloride to the filter for tobacco smoke. CONSTITUTION:Sodium chloride is added to a filter for tobacco smoke by impregnating or spraying an aqueous solution of sodium chloride to a filter tow or filter paper, etc., or adding powder of sodium chloride thereto. Sodium chloride is preferably added to the filter at an amount of 5-100wt.% per filter. Thereby a filter for tobacco smoke having selective absorbing ability of nicotine can be produced, because sodium chloride has excellent ability capable of selectively absorbing nicotine contained in tobacco smoke.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a tobacco smoke filter,
More specifically, the present invention relates to a tobacco smoke filter characterized by containing sodium chloride as a selective remover of nicotine components in tobacco smoke.

[Prior Art] Recent trends in cigarette consumption indicate that products with a light taste, low amounts of nicotine and tar, and a mild feel are preferred. In order to meet these consumer demands, various improvements have been made to cellulose acetate filters and paper filters that are currently widely used. A simple example is one that attempts to increase the filtration rate of nicotine tar by making the length of the filter longer than conventional products. Furthermore, in the case of cellulose acetate filters, measures have been taken to increase the filtration rate of nicotine tar by making the fibers finer in denier and developing various types of irregular cross-sections.

[Problems to be solved by the invention] As the debate on smoking and health issues increases, the aforementioned trend toward milder products is expected to continue, but uniformly filtering nicotine tar as in the past is not effective. There is a problem that it does not satisfy the sense of smoke volume. In order to achieve a satisfactory smoking taste and smoke volume, it is necessary to control the ratio of the amount of nicotine to the amount of tar in the smoke (hereinafter referred to as N/T) to a desired value. It is possible to adjust the N/T in smoke by changing the cigarette paper or using tobacco substitutes. However, these methods have problems.

In other words, there are constraints on the cost of new leaves, the availability of leaves, etc. Furthermore, to date, there are no tobacco substitutes that are acceptable in terms of taste and are not yet at the stage of practical use.

In order to overcome these problems, research is being conducted on filter additives that change the N/T in smoke, that is, filter additives that selectively adsorb and remove nicotine or tar in smoke. There is still nothing that has been put into practical use.

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present inventors have conducted intensive studies and research to find a substance that selectively adsorbs nicotine or tar in smoke, and as a result, sodium chloride. They discovered that Nonoko's ability to selectively adsorb nicotine in cigarette smoke was extremely high, and completed a cigarette smoke filter that had sodium chloride added and had the ability to selectively adsorb nicotine.

That is, the present invention provides a tobacco smoke filter characterized by adding sodium chloride.

The sodium chloride used in the present invention may be any edible sodium chloride.

Since cigarettes are a luxury item, it is essential to use additives in filters that do not impair the original aroma and taste of cigarettes, but sodium chloride is odorless, so it is not recommended for use in filters for cigarette smoke. Even if it is included, it does not have any adverse effect on the aroma and taste of tobacco.

Sodium chloride may be added to a tobacco smoke filter in powder form, or by impregnating or spraying a filter tow or filter paper with an aqueous sodium chloride solution.

It is generally preferable to manufacture the filter structure in the form of a dual structure or a triple structure in order to prevent sodium chloride from flowing into the oral cavity during cigarette smoking.

When used in a dual structure, one part of the filter is sprinkled with sodium chloride powder, or a part to which an aqueous sodium chloride solution is added by impregnation or spraying is connected to a part that does not contain sodium chloride.

When used in a triple structure, a part of the filter that does not contain sodium chloride may be prepared by placing sodium chloride powder directly between the filters, or by sprinkling sodium chloride powder on the filter, or adding an aqueous sodium chloride solution by spraying. It is used in a sandwich structure.

When used in a triple structure, a part of the filter that does not contain sodium chloride may be prepared by placing sodium chloride powder directly between the filters, or by sprinkling sodium chloride powder on the filter, or adding an aqueous sodium chloride solution by spraying. It is used in a sandwich structure.

Filter materials to which sodium chloride is added include cellulose acetate filters, rayon filters, polypropylene filters, paper filters, etc.
It is effective when used on any material.

The amount of sodium chloride added varies depending on the tobacco leaf structure and the filter material, but is preferably 5 to 100% by weight (ratio of sodium chloride weight to the weight of the filter material) per tobacco smoke filter wood. If the amount of sodium chloride added is less than 5% by weight, the nicotine removal effect will be too small, while if it exceeds 100% by weight, problems will arise in terms of aroma and taste.

EXAMPLES The present invention will be explained in detail by examples below, but the present invention is not limited to these examples in any way.

In addition, the ventilation resistance measurement, the measurement of nicotine in the smoking test, and the measurement of tar filtration rate described in the following Examples and Comparative Examples were performed as follows.

A: Ventilation resistance is the pressure loss expressed in water column when the flow rate of air passing through the filter plug or filter chip to be measured is 17.5 ml/sec.

B: The smoking test was conducted using a constant flow type automatic smoking machine with a flow rate of 17.5
ml/second, smoking time 2 seconds, smoking cycle 60 seconds, and smoking length 50 mm. The mainstream smoke was collected with a Cambridge filter, and the filtration rates of nicotine and tar were measured.

The nicotine and tar filtration rate is determined by the amount of nicotine and tar attached to the filter body (TN and Tr, respectively) after smoking is finished.
) and the amounts of nicotine and tar (C and C0, respectively) adhering to a Cambridge filter for collecting smoke components from a smoker were measured, and the filtration rate of each filter was determined using the formula below.

The filter chip was made of crimped cellulose diacetate tow with a single fiber fineness of 3.3 denier, a Y-shaped cross section, and a total fineness of 46,000 denier, to which 6% by weight of triacetin was attached, a circumference of 24.4 mm, and a length of 84 mm. A cigarette filter rod with airflow resistance of 300 mm H20 was wound up and cut into 17-inch filter chips, and then a tobacco stick was prepared by cutting out part of the filter from a commercially available cigarette "Cherry" (manufactured by Japan Tobacco Inc.). This was used as the Comparative Example 1 sample.

The same filter chip used for the comparison product sample above was cut into 5 lengths of 12m+n, and a 10% by weight aqueous sodium chloride solution was added to the 12TQIm filter chip so that the amount of sodium chloride added to the filter chip was It was added with a syringe in an amount of 20% by weight based on the weight of the tow in the chip, and then dried under vacuum at room temperature (20 to 25°C), and connected to a 5 mm filter chip to prepare. Next, this filter chip was connected to the tobacco ring of "Cherry" in the same manner as in Comparative Example 1 to obtain an Example 1 sample.

These samples were smoked using an automatic smoking machine and the filtration rates of nicotine, tar, and water were measured. Table 1 summarizes the results.

Table 1 Table 2 In exactly the same manner as in Example 1, only the amount of sodium chloride aqueous solution added was changed, and the filter chips were prepared so that the amount of sodium chloride added to the filter chip was 10 and 50% by weight based on the tow weight in the chip. was prepared and connected to the tobacco splint to serve as the samples of Examples 2 and 3.

After smoking with an automatic smoking machine in the same manner as in Example 1, the filtration rates of nicotine, tar, and water were measured. The results are summarized in Table 2.

The same 84 mm length filter rod used in Example 1 was cut into 5 mm filter tips. Arrange the two pieces with a gap of 5 mm and separate them using a standard sieve that has passed JIS certification. 0.11 g of granular sodium chloride with a particle size of 24 to 42 mesh (100% weight relative to the weight of the filter material) %) to prepare a triple filter, which was connected to the tobacco ring of "Cherry" in the same manner as in Example 1. Example 1 as a comparative example
A sample was prepared by cutting the filter lot' with a length of 84+n+n into a filter chip of 17++ ua and connecting the cigarette frame to the same filter chip as the triple filter of Example 4. was used. These samples were subjected to a smoking test in the same manner as in Example 1, and the filtration rates of nicotine, tar, and water were measured. The results are shown in Table 3.

The filter can selectively adsorb and remove nicotine from cigarette smoke.

Claims (1)

[Claims] 1. A filter for tobacco smoke, characterized in that it contains sodium chloride. 2. The amount of sodium chloride added is 5 per filter.
The tobacco smoke filter according to claim 1, wherein the amount is 100% by weight.