JPH0458876A - Fiber bundle for tobacco filter - Google Patents

Abstract

PURPOSE:To obtain the title fiber bundle capable of softening irritation and giving light taste without losing balance of flavor and taste by adding a far infrared ray radiating substance to a fiber bundle. CONSTITUTION:The aimed fiber bundle containing fine powder of a far infrared ray radiating substance (e.g. aluminum oxide, titanium oxide, silicon oxide or zirconium oxide), preferably having 0.1-0.7mum grain size at an amount of 1.0-20.0wt.%.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fiber bundle for cigarette filters, and more particularly relates to a fiber bundle for cigarette filters containing inorganic particles that emit far-infrared rays. Technology] In recent years, the trend in cigarette consumption has been toward low-tar, low-nicotine products with a light and mild flavor, and the role required of tobacco smoke filters has become even more important, and the functions they have are becoming increasingly diverse. It is becoming more and more.

Examples of these diversified tobacco smoke filters include so-called plain filters made of acetate fibers and paper, which are impregnated with activated carbon particles to enhance the removal effect of gas components from tobacco smoke, and whey protein granule filters. There are filter chips that are filled with tobacco to increase the effectiveness of removing specific components from tobacco smoke, and filter chips that have micropores in them to allow air to flow in through the micropores during smoking, diluting the smoke (
(open pore filter), a filter molded into a special structure to enhance the removal effect of nicotine and tar components, and also satisfy the feeling of smoke volume; menthol is added to the filter,
There are products designed to give a refreshing feeling when smoking, and all of these have been put into practical use. In addition, a number of filters have been proposed in which various inorganic and organic substances are added to filters to adsorb and remove specific components in smoke. Recently, a technology has been proposed in which instead of adsorbing smoke components to an adsorbent, a filter is filled with inorganic powder that emits far-infrared rays, and the far-infrared rays act on the smoke components to improve smoking taste. (Japanese Patent Application Laid-open No. 63-1139980.

Utility Model No. 64-28898, etc.).

[Problems to be Solved by the Invention] The method of filling a cigarette smoke filter with a far-infrared emitting substance to improve the smoking taste is a method that attempts to improve the smoking taste by filling a cigarette smoke filter with a far-infrared emitting substance. It is an excellent method as it does not cause adsorption and does not dilute the aromatic flavor components with air as is the case with open-pore filters. However, conventionally proposed methods involve simply attaching far-infrared emitting powder to a filter material such as a cellulose acetate fiber bundle, or forming part of the filter into a so-called triple structure and injecting far-infrared emitting powder into the voids. This is a method of filling it.

With these methods, the powder may fall off from the fiber material, and in the case of a triple structure, if the powder is densely packed into the voids, airflow resistance will be high and it will be difficult to smoke, and if it is loosely filled, channels will be formed. , which has the disadvantage that smoke can pass through it.

In addition, some methods have been devised in which the powder is supported by a binder on appropriate granules and filled into the voids of the triple structure, but the channel portion cannot be completely eliminated. In addition, a process for forming granules and a process for forming the filter into a triple structure are required, which poses problems in terms of productivity and economy.

The present invention aims to eliminate the above-mentioned drawbacks in order to express the excellent effect of improving smoking taste by using far-infrared rays.

[Means for Solving the Problems] The present inventors solved the above problem by adding far-infrared emitting powder during the manufacturing process of fibers for cigarette filters such as cellulose acetate fiber bundles, rayon fiber bundles, or polypropylene fiber bundles. This is an attempt to solve the problem by kneading and incorporating it into the yarn.

That is, the present invention provides a fiber bundle for a cigarette filter characterized by kneading and containing a far-infrared emitting substance.

Raw materials for the fiber bundle in the present invention include cellulose acetate, viscose rayon, and polypropylene.

Commercially known far-infrared emitting substances can be used in the present invention, such as aluminum oxide, titanium oxide, silicon oxide, iron oxide, chromium oxide, cobalt oxide, zirconium oxide, manganese oxide, copper oxide, etc. There are inorganic oxide ceramics.

The average particle size of the fine powder of the far-infrared emitting substance used in the present invention is less than 2.0 μm, preferably less than 0.0 μm, although it depends on the particle size distribution.
05-1.0 μm1, more preferably 0.1-0.7 μm
It is. If the average particle size of the fine powder is 2.0 μm or more, it is not preferable because it may cause clogging of the spinneret during spinning or a decrease in the strength and knot strength of the product yarn.

Further, the fiber of the present invention contains zero of the above far-infrared emitting substances in the fiber.
．． The content is 5% by weight or more, preferably 1.0 to 20.0% by weight. If the amount of this far-infrared emitting substance is less than 0.5% by weight, the amount of far-infrared radiation will be insufficient, and when used as a cigarette filter, the effects of softening the irritation and making the taste lighter will not be observed.

Next, in the case where the fiber is produced by solution spinning using solvent-soluble cellulose acetate, which will be explained in the above-mentioned manufacturing example of the fiber of the present invention, the fiber is dispersed in the spinning stock solution and spun. A method for dispersing a far-infrared emitting substance in a spinning dope is to mix a predetermined amount of a far-infrared emitting substance into a part of the spinning dope, disperse well using a known dispersion machine, and mix this with the spinning dope to form a spinning solution. After making it, it is spun. Furthermore, the fine powder of the far-infrared emitting substance is uniformly and finely dispersed in an organic solvent using a dispersion device, and then added to a spinning stock solution containing dissolved cellulose acetate, etc., and spun, so that the fine powder is uniformly kneaded and incorporated into the fiber. It is something.

Thermoplastic substances such as polypropylene are made by mixing polypropylene howders or pellets with fine powder of far-infrared emitting material, adding a dispersion aid if necessary, and then melt-kneading and uniformly dispersing the mixture, and then melt-spinning to form fine powder into fibers. It can be obtained by uniformly kneading and containing.

The fiber bundle thus obtained is crimped by a known technique in order to develop its performance as a cigarette filter.

The structure of a cigarette filter molded from this fiber bundle is not particularly limited, and the fiber bundle of the present invention can be applied to known cigarette filter manufacturing technology and equipment using conventional fiber bundles without any modification to the technology and equipment. Can be used.

The improvement in the flavor and aroma of cigarettes by the cigarette filter manufactured from the fiber bundle containing the far-infrared emitting substance of the present invention lies in making the flavor mellow and mild with less stimulation.

The present invention will be explained below with reference to Examples, but the present invention is not particularly limited thereto.

[Example and Comparative Example] Cellulose diacetate flakes (acetic acid 1t 55.2%
) and 60 kg of Ag203-81o2 type Noceramics (trade name: Cerajit) fine powder were prepared, and these were dissolved and dispersed in 1230 kg of acetone in a mixer. Furthermore, this solution was passed through a wet ultrafine pulverizer to finely form the Cerajite powder. Thereafter, the entire amount of the solution in which Ceragite was dispersed was added and mixed to a separately prepared solution of cellulose diacetate dissolved in an acetone/water mixed solvent to obtain a spinning stock solution. Thereafter, the fibers were subjected to a filtration process according to a conventional method, and then introduced into a spinneret and subjected to dry spinning to obtain an acetate fiber bundle having a single fiber fineness of 3 deniers, a Y-shaped cross section, and a total fineness of 38,000 deniers. This was crimped to make a fiber bundle for cigarette filters. This acetate fiber bundle contained 1.5% by weight of Cerajit.

Next, the filter manufacturing equipment (Howuni AFL/KDF2
) was used to impregnate this fiber bundle with 5% by weight of triacetin, roll up a H20 cigarette filter rod with a circumference of 24.5111%, a length of 102W1+, and an airflow resistance of 360 mm, and cut this into 17U+ filter chips. A part of the filter was cut out from a commercially available cigarette "Mild Seven" manufactured by Tobacco Sangyo Co., Ltd. and connected to a tobacco rod to prepare a product sample of the present invention.

For comparison, Y was prepared with a single fiber fineness of 3 denier and with the same formulation and conditions as in the example except that it did not contain Ceragite at all.
A fiber bundle for cigarette filters having a mold cross section and a total fineness of 36,000 denier was obtained. A cigarette filter rod of the same size was wound up under exactly the same conditions as in the example. The airflow resistance was 365 ++ nH2O. This is 17m+i
A comparison sample was prepared by cutting the filter chip into a filter chip and connecting it to a tobacco rod portion obtained by cutting out a portion of the filter from the same "Mild Seven" as in the example.

A panel of 10 regular smokers was used to compare the smoking taste of the product of the present invention and the comparative product. The results were as shown in the table.

[Effect of the invention] The cigarette filter using the fiber bundle for cigarette filters containing the far-infrared radioactive substance of the present invention has no cigarette aroma,
It can soften the pungent taste and make it lighter without destroying the balance of flavor and overall taste.

Claims (1)

[Claims] A fiber bundle for cigarette filters characterized by kneading and containing a far-infrared emitting substance.