JPH03216178A - Filter for tobacco smoke - Google Patents

Abstract

PURPOSE:To obtain the subject filter capable of selectively adsorbing and removing nicotine component in tobacco smoke and free from undesirable influence upon the flavor and taste of tobacco by adding nicotinic acid amide to a filter. CONSTITUTION:The objective filter is produced by adding preferably 5-100wt.% of nicotinic acid amide to one cigarette filter.

Description

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

[Conventional technology]

Recent trends in cigarette consumption indicate a preference for products with a light taste, low amounts of nicotine and tar, and a mild feel. In order to meet such 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.

[Issues that the invention aims to solve] As the discussion of smoking and health problems increases, the aforementioned trend toward milder smoking is expected to continue, but uniformly filtering nicotine and tar as in the past is not effective. There is a problem that the smoke volume cannot be satisfied. 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. N/T in smoke can be adjusted by changing the composition of tobacco leaves or using tobacco substitutes. However, these methods have problems.

That is, there are restrictions 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 circumstances, the inventors of the present invention have conducted extensive studies and studies to find a substance that selectively adsorbs nicotine or tar in smoke, and have found that nicotinic acid They discovered that amide has an extremely high ability to selectively adsorb nicotine in tobacco smoke, and completed a cigarette smoke filter containing nicotinic acid amide that has the ability to selectively adsorb nicotine.

That is, the present invention provides a tobacco smoke filter characterized by adding nicotinic acid amide.

The nicotinic acid amide used in the present invention may be one that satisfies any of the Japanese Food Additives Official Standards, Japanese Pharmacopoeia, and Cosmetic Raw Materials Standards.

Since cigarettes are a luxury item, it is essential that additives for filters be substances that do not impair the original aroma and taste of cigarettes, but as long as they meet any of the standards listed above, Since nicotinic acid amide is odorless, even if it is included in a cigarette smoke filter, it does not have any adverse effect on the aroma and taste of cigarettes.

Nicotinic acid amide can be added to a tobacco smoke filter by adding it in powder form, or by adding a nicotinic acid amide aqueous solution or a solution of nicotinic acid amide dissolved in an organic solvent such as ethanol to filter tow or filter paper. It may be added by impregnation or spraying.

It is generally preferable to manufacture the filter structure in the form of a dual structure or triple structure in order to prevent nicotinamide from flowing into the oral cavity during cigarette smoking. When used in a dual structure, one part of the filter is sprinkled with nicotinamide powder, or a part to which an aqueous nicotinamide solution or an organic solvent solution of nicotinamide is added by impregnation or spraying is connected to a part that does not contain nicotinamide. and use it.

When using a triple structure, place a portion of the filter between the filters, or insert the nicotinamide powder directly between the filters.
Alternatively, a filter may be sprinkled with nicotinamide powder, or an aqueous nicotinamide solution or an organic solvent solution of nicotinamide may be added by spraying, and the filter may be sandwiched between portions that do not contain nicotinamide.

Examples of filter materials to which nicotinic acid amide is added include cellulose acetate filters, rayon filters, polypropylene filters, and paper filters, and the effect is exhibited no matter which material is used.

The amount of nicotinic acid amide added varies depending on the tobacco leaf structure and filter material, but it is preferably 5 to 100% by weight (ratio of nicotinic acid amide weight to the weight of the filter material) per tobacco smoke filter. . If the amount of nicotinic acid amide 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 flavor, such as a strong spiciness.

[Examples] Hereinafter, the present invention will be explained in detail with reference to Examples, but the present invention is not limited to these Examples at all.

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

A: Ventilation resistance is the pressure loss at a faucet when the flow rate of air passing through the filter plug or filter chip to be measured is 17.5 ml/sec.

Mouth: 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 seconds.The mainstream smoke was collected with a Cambridge filter, and the filtration rates of nicotine and tar were measured.

Nicotine and tar filtration rate is the amount of nicotine and tar attached to the filter after smoking is finished (TN and T T respectively)
and the amount of nicotine and tar attached to the Cambridge filter for collecting smoke components from a smoker (C and C T respectively)
was measured, and the N 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, a length of 84 mm, A cigarette filter rod with an airflow resistance of 300 ml H20 was rolled up, cut into 17-inch filter chips, and then connected to a tobacco rod with the filter tip cut off from a commercially available cigarette "Cherry" (manufactured by Japan Tobacco Inc.). This was used as Comparative Example 1 sample.

The same filter tip used for the comparison sample above was cut into lengths of 12m+* and 51II1, and 12mm
A 5% by weight aqueous solution of nicotinamide was added to the filter chip using a syringe so that the amount of nicotinamide added to the filter chip was 30% by weight based on the tow weight in the chip, and then heated at room temperature (20 to 25% by weight). ℃) and connected to a 51Ilm filter chip. Next, this filter chip was connected to a "Cherry" tobacco rod in the same manner as in Comparative Example 1 to obtain a sample of Example 1.

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 In exactly the same manner as in Example 1, only the amount of nicotinamide aqueous solution added was changed, and the amount of nicotinamide added to the filter chip was 10 and 5 with respect to the tow tray in the chip.
A filter chip was prepared so as to have a concentration of 0% by weight, and was connected to a tobacco rod to provide 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.

Table 2 The same 84 mm length filter rod used in Example 1 was cut into 5-piece filter tips. The two pieces were arranged with a gap of 5 mm between them, and granular nicotinic acid amide O. A triple filter was prepared by adding Ilg (100% by weight based on the weight of the filter material) and connected to the tobacco rod of "Cherry" in the same manner as in Example 1. Examples 1 to 2 are comparative examples.
A sample was prepared by cutting the 84 mm long filter rod used in Example 4 into a 17 mm filter chip, which had the same ventilation resistance as the triple filter of Example 4, and connecting a tobacco rod portion to it. 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.

Table 3 [Effects of the Invention] According to the cigarette smoke filter containing nicotinic acid amide of the present invention, nicotine in cigarette smoke can be selectively adsorbed and removed.

Claims (1)

[Claims] 1. A filter for tobacco smoke characterized by adding nicotinic acid amide. 2. The tobacco smoke filter according to claim 1, wherein the amount of nicotinamide added is 5 to 100% by weight per filter.